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/* armemu.c -- Main instruction emulation: ARM7 Instruction Emulator.
Copyright ( C ) 1994 Advanced RISC Machines Ltd .
Modifications to add arch . v4 support by < jsmith @ cygnus . com > .
This program is free software ; you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation ; either version 2 of the License , or
( at your option ) any later version .
This program is distributed in the hope that it will be useful ,
but WITHOUT ANY WARRANTY ; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
GNU General Public License for more details .
You should have received a copy of the GNU General Public License
along with this program ; if not , write to the Free Software
Foundation , Inc . , 59 Temple Place - Suite 330 , Boston , MA 02111 - 1307 , USA . */
# include "arm_regformat.h"
# include "armdefs.h"
# include "armemu.h"
# include "armos.h"
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void
XScale_set_fsr_far ( ARMul_State * state , ARMword fsr , ARMword _far )
{
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_dbg_assert_msg_ ( ARM11 , false , " ImplementMe: XScale_set_fsr_far! " ) ;
//if (!state->is_XScale || (read_cp14_reg(10) & (1UL << 31)) == 0)
// return;
//
//write_cp15_reg(state, 5, 0, 0, fsr);
//write_cp15_reg(state, 6, 0, 0, _far);
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}
# define ARMul_Debug(x,y,z) 0 // Disabling this /bunnei
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//#include "skyeye_callback.h"
//#include "skyeye_bus.h"
//#include "sim_control.h"
//#include "skyeye_pref.h"
//#include "skyeye.h"
//#include "skyeye2gdb.h"
//#include "code_cov.h"
//#include "iwmmxt.h"
//chy 2003-07-11: for debug instrs
//extern int skyeye_instr_debug;
extern FILE * skyeye_logfd ;
static ARMword GetDPRegRHS ( ARMul_State * , ARMword ) ;
static ARMword GetDPSRegRHS ( ARMul_State * , ARMword ) ;
static void WriteR15 ( ARMul_State * , ARMword ) ;
static void WriteSR15 ( ARMul_State * , ARMword ) ;
static void WriteR15Branch ( ARMul_State * , ARMword ) ;
static ARMword GetLSRegRHS ( ARMul_State * , ARMword ) ;
static ARMword GetLS7RHS ( ARMul_State * , ARMword ) ;
static unsigned LoadWord ( ARMul_State * , ARMword , ARMword ) ;
static unsigned LoadHalfWord ( ARMul_State * , ARMword , ARMword , int ) ;
static unsigned LoadByte ( ARMul_State * , ARMword , ARMword , int ) ;
static unsigned StoreWord ( ARMul_State * , ARMword , ARMword ) ;
static unsigned StoreHalfWord ( ARMul_State * , ARMword , ARMword ) ;
static unsigned StoreByte ( ARMul_State * , ARMword , ARMword ) ;
static void LoadMult ( ARMul_State * , ARMword , ARMword , ARMword ) ;
static void StoreMult ( ARMul_State * , ARMword , ARMword , ARMword ) ;
static void LoadSMult ( ARMul_State * , ARMword , ARMword , ARMword ) ;
static void StoreSMult ( ARMul_State * , ARMword , ARMword , ARMword ) ;
static unsigned Multiply64 ( ARMul_State * , ARMword , int , int ) ;
static unsigned MultiplyAdd64 ( ARMul_State * , ARMword , int , int ) ;
static void Handle_Load_Double ( ARMul_State * , ARMword ) ;
static void Handle_Store_Double ( ARMul_State * , ARMword ) ;
void
XScale_set_fsr_far ( ARMul_State * state , ARMword fsr , ARMword _far ) ;
int
XScale_debug_moe ( ARMul_State * state , int moe ) ;
unsigned xscale_cp15_cp_access_allowed ( ARMul_State * state , unsigned reg ,
unsigned cpnum ) ;
static int
handle_v6_insn ( ARMul_State * state , ARMword instr ) ;
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# define LUNSIGNED (0) /* unsigned operation */
# define LSIGNED (1) /* signed operation */
# define LDEFAULT (0) /* default : do nothing */
# define LSCC (1) /* set condition codes on result */
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# ifdef NEED_UI_LOOP_HOOK
/* How often to run the ui_loop update, when in use. */
# define UI_LOOP_POLL_INTERVAL 0x32000
/* Counter for the ui_loop_hook update. */
static int ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL ;
/* Actual hook to call to run through gdb's gui event loop. */
extern int ( * ui_loop_hook ) ( int ) ;
# endif /* NEED_UI_LOOP_HOOK */
/* Short-hand macros for LDR/STR. */
/* Store post decrement writeback. */
# define SHDOWNWB() \
lhs = LHS ; \
if ( StoreHalfWord ( state , instr , lhs ) ) \
LSBase = lhs - GetLS7RHS ( state , instr ) ;
/* Store post increment writeback. */
# define SHUPWB() \
lhs = LHS ; \
if ( StoreHalfWord ( state , instr , lhs ) ) \
LSBase = lhs + GetLS7RHS ( state , instr ) ;
/* Store pre decrement. */
# define SHPREDOWN() \
( void ) StoreHalfWord ( state , instr , LHS - GetLS7RHS ( state , instr ) ) ;
/* Store pre decrement writeback. */
# define SHPREDOWNWB() \
temp = LHS - GetLS7RHS ( state , instr ) ; \
if ( StoreHalfWord ( state , instr , temp ) ) \
LSBase = temp ;
/* Store pre increment. */
# define SHPREUP() \
( void ) StoreHalfWord ( state , instr , LHS + GetLS7RHS ( state , instr ) ) ;
/* Store pre increment writeback. */
# define SHPREUPWB() \
temp = LHS + GetLS7RHS ( state , instr ) ; \
if ( StoreHalfWord ( state , instr , temp ) ) \
LSBase = temp ;
/* Load post decrement writeback. */
# define LHPOSTDOWN() \
{ \
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int done = 1 ; \
lhs = LHS ; \
temp = lhs - GetLS7RHS ( state , instr ) ; \
\
switch ( BITS ( 5 , 6 ) ) \
{ \
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case 1 : /* H */ \
if ( LoadHalfWord ( state , instr , lhs , LUNSIGNED ) ) \
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LSBase = temp ; \
break ; \
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case 2 : /* SB */ \
if ( LoadByte ( state , instr , lhs , LSIGNED ) ) \
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LSBase = temp ; \
break ; \
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case 3 : /* SH */ \
if ( LoadHalfWord ( state , instr , lhs , LSIGNED ) ) \
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LSBase = temp ; \
break ; \
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case 0 : /* SWP handled elsewhere. */ \
default : \
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done = 0 ; \
break ; \
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} \
if ( done ) \
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break ; \
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}
/* Load post increment writeback. */
# define LHPOSTUP() \
{ \
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int done = 1 ; \
lhs = LHS ; \
temp = lhs + GetLS7RHS ( state , instr ) ; \
\
switch ( BITS ( 5 , 6 ) ) \
{ \
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case 1 : /* H */ \
if ( LoadHalfWord ( state , instr , lhs , LUNSIGNED ) ) \
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LSBase = temp ; \
break ; \
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case 2 : /* SB */ \
if ( LoadByte ( state , instr , lhs , LSIGNED ) ) \
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LSBase = temp ; \
break ; \
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case 3 : /* SH */ \
if ( LoadHalfWord ( state , instr , lhs , LSIGNED ) ) \
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LSBase = temp ; \
break ; \
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case 0 : /* SWP handled elsewhere. */ \
default : \
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done = 0 ; \
break ; \
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} \
if ( done ) \
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break ; \
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}
/* Load pre decrement. */
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# define LHPREDOWN() \
{ \
int done = 1 ; \
\
temp = LHS - GetLS7RHS ( state , instr ) ; \
switch ( BITS ( 5 , 6 ) ) \
{ \
case 1 : /* H */ \
( void ) LoadHalfWord ( state , instr , temp , LUNSIGNED ) ; \
break ; \
case 2 : /* SB */ \
( void ) LoadByte ( state , instr , temp , LSIGNED ) ; \
break ; \
case 3 : /* SH */ \
( void ) LoadHalfWord ( state , instr , temp , LSIGNED ) ; \
break ; \
case 0 : \
/* SWP handled elsewhere. */ \
default : \
done = 0 ; \
break ; \
} \
if ( done ) \
break ; \
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}
/* Load pre decrement writeback. */
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# define LHPREDOWNWB() \
{ \
int done = 1 ; \
\
temp = LHS - GetLS7RHS ( state , instr ) ; \
switch ( BITS ( 5 , 6 ) ) \
{ \
case 1 : /* H */ \
if ( LoadHalfWord ( state , instr , temp , LUNSIGNED ) ) \
LSBase = temp ; \
break ; \
case 2 : /* SB */ \
if ( LoadByte ( state , instr , temp , LSIGNED ) ) \
LSBase = temp ; \
break ; \
case 3 : /* SH */ \
if ( LoadHalfWord ( state , instr , temp , LSIGNED ) ) \
LSBase = temp ; \
break ; \
case 0 : \
/* SWP handled elsewhere. */ \
default : \
done = 0 ; \
break ; \
} \
if ( done ) \
break ; \
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}
/* Load pre increment. */
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# define LHPREUP() \
{ \
int done = 1 ; \
\
temp = LHS + GetLS7RHS ( state , instr ) ; \
switch ( BITS ( 5 , 6 ) ) \
{ \
case 1 : /* H */ \
( void ) LoadHalfWord ( state , instr , temp , LUNSIGNED ) ; \
break ; \
case 2 : /* SB */ \
( void ) LoadByte ( state , instr , temp , LSIGNED ) ; \
break ; \
case 3 : /* SH */ \
( void ) LoadHalfWord ( state , instr , temp , LSIGNED ) ; \
break ; \
case 0 : \
/* SWP handled elsewhere. */ \
default : \
done = 0 ; \
break ; \
} \
if ( done ) \
break ; \
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}
/* Load pre increment writeback. */
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# define LHPREUPWB() \
{ \
int done = 1 ; \
\
temp = LHS + GetLS7RHS ( state , instr ) ; \
switch ( BITS ( 5 , 6 ) ) \
{ \
case 1 : /* H */ \
if ( LoadHalfWord ( state , instr , temp , LUNSIGNED ) ) \
LSBase = temp ; \
break ; \
case 2 : /* SB */ \
if ( LoadByte ( state , instr , temp , LSIGNED ) ) \
LSBase = temp ; \
break ; \
case 3 : /* SH */ \
if ( LoadHalfWord ( state , instr , temp , LSIGNED ) ) \
LSBase = temp ; \
break ; \
case 0 : \
/* SWP handled elsewhere. */ \
default : \
done = 0 ; \
break ; \
} \
if ( done ) \
break ; \
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}
/*ywc 2005-03-31*/
//teawater add for arm2x86 2005.02.17-------------------------------------------
# ifdef DBCT
# include "dbct/tb.h"
# include "dbct/arm2x86_self.h"
# endif
//AJ2D--------------------------------------------------------------------------
//Diff register
unsigned int mirror_register_file [ 39 ] ;
/* EMULATION of ARM6. */
/* The PC pipeline value depends on whether ARM
or Thumb instructions are being executed . */
ARMword isize ;
extern int debugmode ;
int ARMul_ICE_debug ( ARMul_State * state , ARMword instr , ARMword addr ) ;
# ifdef MODE32
//chy 2006-04-12, for ICE debug
int ARMul_ICE_debug ( ARMul_State * state , ARMword instr , ARMword addr )
{
int i ;
#if 0
if ( debugmode ) {
if ( instr = = ARMul_ABORTWORD ) return 0 ;
for ( i = 0 ; i < skyeye_ice . num_bps ; i + + ) {
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if ( skyeye_ice . bps [ i ] = = addr ) {
//for test
//printf("SKYEYE: ICE_debug bps [%d]== 0x%x\n", i,addr);
state - > EndCondition = 0 ;
state - > Emulate = STOP ;
return 1 ;
}
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}
if ( skyeye_ice . tps_status = = TRACE_STARTED )
{
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for ( i = 0 ; i < skyeye_ice . num_tps ; i + + )
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{
if ( ( ( skyeye_ice . tps [ i ] . tp_address = = addr ) & & ( skyeye_ice . tps [ i ] . status = = TRACEPOINT_ENABLED ) ) | | ( skyeye_ice . tps [ i ] . status = = TRACEPOINT_STEPPING ) )
{
handle_tracepoint ( i ) ;
}
}
}
}
/* do profiling for code coverage */
if ( skyeye_config . code_cov . prof_on )
cov_prof ( EXEC_FLAG , addr ) ;
# endif
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/* chech if we need to run some callback functions at this time */
//generic_arch_t* arch_instance = get_arch_instance("");
//exec_callback(Step_callback, arch_instance);
//if (!SIM_is_running()) {
// if (instr == ARMul_ABORTWORD) return 0;
// state->EndCondition = 0;
// state->Emulate = STOP;
// return 1;
//}
return 0 ;
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}
/*
void chy_debug ( )
{
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printf ( " SkyEye chy_deubeg begin \n " ) ;
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}
*/
ARMword
ARMul_Emulate32 ( ARMul_State * state )
# else
ARMword
ARMul_Emulate26 ( ARMul_State * state )
# endif
{
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ARMword instr ; /* The current instruction. */
ARMword dest = 0 ; /* Almost the DestBus. */
ARMword temp ; /* Ubiquitous third hand. */
ARMword pc = 0 ; /* The address of the current instruction. */
ARMword lhs ; /* Almost the ABus and BBus. */
ARMword rhs ;
ARMword decoded = 0 ; /* Instruction pipeline. */
ARMword loaded = 0 ;
ARMword decoded_addr = 0 ;
ARMword loaded_addr = 0 ;
ARMword have_bp = 0 ;
/* shenoubang */
static int instr_sum = 0 ;
int reg_index = 0 ;
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# if DIFF_STATE
//initialize all mirror register for follow mode
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for ( reg_index = 0 ; reg_index < 16 ; reg_index + + ) {
mirror_register_file [ reg_index ] = state - > Reg [ reg_index ] ;
}
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mirror_register_file [ CPSR_REG ] = state - > Cpsr ;
mirror_register_file [ R13_SVC ] = state - > RegBank [ SVCBANK ] [ 13 ] ;
mirror_register_file [ R14_SVC ] = state - > RegBank [ SVCBANK ] [ 14 ] ;
mirror_register_file [ R13_ABORT ] = state - > RegBank [ ABORTBANK ] [ 13 ] ;
mirror_register_file [ R14_ABORT ] = state - > RegBank [ ABORTBANK ] [ 14 ] ;
mirror_register_file [ R13_UNDEF ] = state - > RegBank [ UNDEFBANK ] [ 13 ] ;
mirror_register_file [ R14_UNDEF ] = state - > RegBank [ UNDEFBANK ] [ 14 ] ;
mirror_register_file [ R13_IRQ ] = state - > RegBank [ IRQBANK ] [ 13 ] ;
mirror_register_file [ R14_IRQ ] = state - > RegBank [ IRQBANK ] [ 14 ] ;
mirror_register_file [ R8_FIRQ ] = state - > RegBank [ FIQBANK ] [ 8 ] ;
mirror_register_file [ R9_FIRQ ] = state - > RegBank [ FIQBANK ] [ 9 ] ;
mirror_register_file [ R10_FIRQ ] = state - > RegBank [ FIQBANK ] [ 10 ] ;
mirror_register_file [ R11_FIRQ ] = state - > RegBank [ FIQBANK ] [ 11 ] ;
mirror_register_file [ R12_FIRQ ] = state - > RegBank [ FIQBANK ] [ 12 ] ;
mirror_register_file [ R13_FIRQ ] = state - > RegBank [ FIQBANK ] [ 13 ] ;
mirror_register_file [ R14_FIRQ ] = state - > RegBank [ FIQBANK ] [ 14 ] ;
mirror_register_file [ SPSR_SVC ] = state - > Spsr [ SVCBANK ] ;
mirror_register_file [ SPSR_ABORT ] = state - > Spsr [ ABORTBANK ] ;
mirror_register_file [ SPSR_UNDEF ] = state - > Spsr [ UNDEFBANK ] ;
mirror_register_file [ SPSR_IRQ ] = state - > Spsr [ IRQBANK ] ;
mirror_register_file [ SPSR_FIRQ ] = state - > Spsr [ FIQBANK ] ;
# endif
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/* Execute the next instruction. */
if ( state - > NextInstr < PRIMEPIPE ) {
decoded = state - > decoded ;
loaded = state - > loaded ;
pc = state - > pc ;
//chy 2006-04-12, for ICE debug
decoded_addr = state - > decoded_addr ;
loaded_addr = state - > loaded_addr ;
}
do {
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//print_func_name(state->pc);
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/* Just keep going. */
isize = INSN_SIZE ;
switch ( state - > NextInstr ) {
case SEQ :
/* Advance the pipeline, and an S cycle. */
state - > Reg [ 15 ] + = isize ;
pc + = isize ;
instr = decoded ;
//chy 2006-04-12, for ICE debug
have_bp = ARMul_ICE_debug ( state , instr , decoded_addr ) ;
decoded = loaded ;
decoded_addr = loaded_addr ;
//loaded = ARMul_LoadInstrS (state, pc + (isize * 2),
// isize);
loaded_addr = pc + ( isize * 2 ) ;
if ( have_bp ) goto TEST_EMULATE ;
break ;
case NONSEQ :
/* Advance the pipeline, and an N cycle. */
state - > Reg [ 15 ] + = isize ;
pc + = isize ;
instr = decoded ;
//chy 2006-04-12, for ICE debug
have_bp = ARMul_ICE_debug ( state , instr , decoded_addr ) ;
decoded = loaded ;
decoded_addr = loaded_addr ;
//loaded = ARMul_LoadInstrN (state, pc + (isize * 2),
// isize);
loaded_addr = pc + ( isize * 2 ) ;
NORMALCYCLE ;
if ( have_bp ) goto TEST_EMULATE ;
break ;
case PCINCEDSEQ :
/* Program counter advanced, and an S cycle. */
pc + = isize ;
instr = decoded ;
//chy 2006-04-12, for ICE debug
have_bp = ARMul_ICE_debug ( state , instr , decoded_addr ) ;
decoded = loaded ;
decoded_addr = loaded_addr ;
//loaded = ARMul_LoadInstrS (state, pc + (isize * 2),
// isize);
loaded_addr = pc + ( isize * 2 ) ;
NORMALCYCLE ;
if ( have_bp ) goto TEST_EMULATE ;
break ;
case PCINCEDNONSEQ :
/* Program counter advanced, and an N cycle. */
pc + = isize ;
instr = decoded ;
//chy 2006-04-12, for ICE debug
have_bp = ARMul_ICE_debug ( state , instr , decoded_addr ) ;
decoded = loaded ;
decoded_addr = loaded_addr ;
//loaded = ARMul_LoadInstrN (state, pc + (isize * 2),
// isize);
loaded_addr = pc + ( isize * 2 ) ;
NORMALCYCLE ;
if ( have_bp ) goto TEST_EMULATE ;
break ;
case RESUME :
/* The program counter has been changed. */
pc = state - > Reg [ 15 ] ;
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# ifndef MODE32
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pc = pc & R15PCBITS ;
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# endif
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state - > Reg [ 15 ] = pc + ( isize * 2 ) ;
state - > Aborted = 0 ;
//chy 2004-05-25, fix bug provided by Carl van Schaik<cvansch@cse.unsw.EDU.AU>
state - > AbortAddr = 1 ;
instr = ARMul_LoadInstrN ( state , pc , isize ) ;
//instr = ARMul_ReLoadInstr (state, pc, isize);
//chy 2006-04-12, for ICE debug
have_bp = ARMul_ICE_debug ( state , instr , pc ) ;
//decoded =
// ARMul_ReLoadInstr (state, pc + isize, isize);
decoded_addr = pc + isize ;
//loaded = ARMul_ReLoadInstr (state, pc + isize * 2,
// isize);
loaded_addr = pc + isize * 2 ;
NORMALCYCLE ;
if ( have_bp ) goto TEST_EMULATE ;
break ;
default :
/* The program counter has been changed. */
pc = state - > Reg [ 15 ] ;
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# ifndef MODE32
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pc = pc & R15PCBITS ;
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# endif
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state - > Reg [ 15 ] = pc + ( isize * 2 ) ;
state - > Aborted = 0 ;
//chy 2004-05-25, fix bug provided by Carl van Schaik<cvansch@cse.unsw.EDU.AU>
state - > AbortAddr = 1 ;
instr = ARMul_LoadInstrN ( state , pc , isize ) ;
//chy 2006-04-12, for ICE debug
have_bp = ARMul_ICE_debug ( state , instr , pc ) ;
#if 0
decoded =
ARMul_LoadInstrS ( state , pc + ( isize ) , isize ) ;
# endif
decoded_addr = pc + isize ;
#if 0
loaded = ARMul_LoadInstrS ( state , pc + ( isize * 2 ) ,
isize ) ;
# endif
loaded_addr = pc + isize * 2 ;
NORMALCYCLE ;
if ( have_bp ) goto TEST_EMULATE ;
break ;
}
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#if 0
int idx = 0 ;
printf ( " pc:%x \n " , pc ) ;
for ( ; idx < 17 ; idx + + ) {
printf ( " R%d:%x \t " , idx , state - > Reg [ idx ] ) ;
}
printf ( " \n " ) ;
# endif
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instr = ARMul_LoadInstrN ( state , pc , isize ) ;
state - > last_instr = state - > CurrInstr ;
state - > CurrInstr = instr ;
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#if 0
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if ( ( state - > NumInstrs % 10000000 ) = = 0 )
printf ( " ---|%p|--- %lld \n " , pc , state - > NumInstrs ) ;
if ( state - > NumInstrs > ( 3000000000 ) ) {
static int flag = 0 ;
if ( pc = = 0x8032ccc4 ) {
flag = 300 ;
}
if ( flag ) {
int idx = 0 ;
printf ( " ------------------------------------ \n " ) ;
printf ( " pc:%x \n " , pc ) ;
for ( ; idx < 17 ; idx + + ) {
printf ( " R%d:%x \t " , idx , state - > Reg [ idx ] ) ;
}
printf ( " \n N:%d \t Z:%d \t C:%d \t V:%d \n " , state - > NFlag , state - > ZFlag , state - > CFlag , state - > VFlag ) ;
printf ( " \n " ) ;
printf ( " ------------------------------------ \n " ) ;
flag - - ;
}
}
# endif
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# if DIFF_STATE
fprintf ( state - > state_log , " PC:0x%x \n " , pc ) ;
if ( pc & & ( pc + 8 ) ! = state - > Reg [ 15 ] ) {
printf ( " lucky dog \n " ) ;
printf ( " pc is %x, R15 is %x \n " , pc , state - > Reg [ 15 ] ) ;
//exit(-1);
}
for ( reg_index = 0 ; reg_index < 16 ; reg_index + + ) {
if ( state - > Reg [ reg_index ] ! = mirror_register_file [ reg_index ] ) {
fprintf ( state - > state_log , " R%d:0x%x \n " , reg_index , state - > Reg [ reg_index ] ) ;
mirror_register_file [ reg_index ] = state - > Reg [ reg_index ] ;
}
}
if ( state - > Cpsr ! = mirror_register_file [ CPSR_REG ] ) {
fprintf ( state - > state_log , " Cpsr:0x%x \n " , state - > Cpsr ) ;
mirror_register_file [ CPSR_REG ] = state - > Cpsr ;
}
if ( state - > RegBank [ SVCBANK ] [ 13 ] ! = mirror_register_file [ R13_SVC ] ) {
fprintf ( state - > state_log , " R13_SVC:0x%x \n " , state - > RegBank [ SVCBANK ] [ 13 ] ) ;
mirror_register_file [ R13_SVC ] = state - > RegBank [ SVCBANK ] [ 13 ] ;
}
if ( state - > RegBank [ SVCBANK ] [ 14 ] ! = mirror_register_file [ R14_SVC ] ) {
fprintf ( state - > state_log , " R14_SVC:0x%x \n " , state - > RegBank [ SVCBANK ] [ 14 ] ) ;
mirror_register_file [ R14_SVC ] = state - > RegBank [ SVCBANK ] [ 14 ] ;
}
if ( state - > RegBank [ ABORTBANK ] [ 13 ] ! = mirror_register_file [ R13_ABORT ] ) {
fprintf ( state - > state_log , " R13_ABORT:0x%x \n " , state - > RegBank [ ABORTBANK ] [ 13 ] ) ;
mirror_register_file [ R13_ABORT ] = state - > RegBank [ ABORTBANK ] [ 13 ] ;
}
if ( state - > RegBank [ ABORTBANK ] [ 14 ] ! = mirror_register_file [ R14_ABORT ] ) {
fprintf ( state - > state_log , " R14_ABORT:0x%x \n " , state - > RegBank [ ABORTBANK ] [ 14 ] ) ;
mirror_register_file [ R14_ABORT ] = state - > RegBank [ ABORTBANK ] [ 14 ] ;
}
if ( state - > RegBank [ UNDEFBANK ] [ 13 ] ! = mirror_register_file [ R13_UNDEF ] ) {
fprintf ( state - > state_log , " R13_UNDEF:0x%x \n " , state - > RegBank [ UNDEFBANK ] [ 13 ] ) ;
mirror_register_file [ R13_UNDEF ] = state - > RegBank [ UNDEFBANK ] [ 13 ] ;
}
if ( state - > RegBank [ UNDEFBANK ] [ 14 ] ! = mirror_register_file [ R14_UNDEF ] ) {
fprintf ( state - > state_log , " R14_UNDEF:0x%x \n " , state - > RegBank [ UNDEFBANK ] [ 14 ] ) ;
mirror_register_file [ R14_UNDEF ] = state - > RegBank [ UNDEFBANK ] [ 14 ] ;
}
if ( state - > RegBank [ IRQBANK ] [ 13 ] ! = mirror_register_file [ R13_IRQ ] ) {
fprintf ( state - > state_log , " R13_IRQ:0x%x \n " , state - > RegBank [ IRQBANK ] [ 13 ] ) ;
mirror_register_file [ R13_IRQ ] = state - > RegBank [ IRQBANK ] [ 13 ] ;
}
if ( state - > RegBank [ IRQBANK ] [ 14 ] ! = mirror_register_file [ R14_IRQ ] ) {
fprintf ( state - > state_log , " R14_IRQ:0x%x \n " , state - > RegBank [ IRQBANK ] [ 14 ] ) ;
mirror_register_file [ R14_IRQ ] = state - > RegBank [ IRQBANK ] [ 14 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 8 ] ! = mirror_register_file [ R8_FIRQ ] ) {
fprintf ( state - > state_log , " R8_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 8 ] ) ;
mirror_register_file [ R8_FIRQ ] = state - > RegBank [ FIQBANK ] [ 8 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 9 ] ! = mirror_register_file [ R9_FIRQ ] ) {
fprintf ( state - > state_log , " R9_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 9 ] ) ;
mirror_register_file [ R9_FIRQ ] = state - > RegBank [ FIQBANK ] [ 9 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 10 ] ! = mirror_register_file [ R10_FIRQ ] ) {
fprintf ( state - > state_log , " R10_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 10 ] ) ;
mirror_register_file [ R10_FIRQ ] = state - > RegBank [ FIQBANK ] [ 10 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 11 ] ! = mirror_register_file [ R11_FIRQ ] ) {
fprintf ( state - > state_log , " R11_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 11 ] ) ;
mirror_register_file [ R11_FIRQ ] = state - > RegBank [ FIQBANK ] [ 11 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 12 ] ! = mirror_register_file [ R12_FIRQ ] ) {
fprintf ( state - > state_log , " R12_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 12 ] ) ;
mirror_register_file [ R12_FIRQ ] = state - > RegBank [ FIQBANK ] [ 12 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 13 ] ! = mirror_register_file [ R13_FIRQ ] ) {
fprintf ( state - > state_log , " R13_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 13 ] ) ;
mirror_register_file [ R13_FIRQ ] = state - > RegBank [ FIQBANK ] [ 13 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 14 ] ! = mirror_register_file [ R14_FIRQ ] ) {
fprintf ( state - > state_log , " R14_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 14 ] ) ;
mirror_register_file [ R14_FIRQ ] = state - > RegBank [ FIQBANK ] [ 14 ] ;
}
if ( state - > Spsr [ SVCBANK ] ! = mirror_register_file [ SPSR_SVC ] ) {
fprintf ( state - > state_log , " SPSR_SVC:0x%x \n " , state - > Spsr [ SVCBANK ] ) ;
mirror_register_file [ SPSR_SVC ] = state - > RegBank [ SVCBANK ] ;
}
if ( state - > Spsr [ ABORTBANK ] ! = mirror_register_file [ SPSR_ABORT ] ) {
fprintf ( state - > state_log , " SPSR_ABORT:0x%x \n " , state - > Spsr [ ABORTBANK ] ) ;
mirror_register_file [ SPSR_ABORT ] = state - > RegBank [ ABORTBANK ] ;
}
if ( state - > Spsr [ UNDEFBANK ] ! = mirror_register_file [ SPSR_UNDEF ] ) {
fprintf ( state - > state_log , " SPSR_UNDEF:0x%x \n " , state - > Spsr [ UNDEFBANK ] ) ;
mirror_register_file [ SPSR_UNDEF ] = state - > RegBank [ UNDEFBANK ] ;
}
if ( state - > Spsr [ IRQBANK ] ! = mirror_register_file [ SPSR_IRQ ] ) {
fprintf ( state - > state_log , " SPSR_IRQ:0x%x \n " , state - > Spsr [ IRQBANK ] ) ;
mirror_register_file [ SPSR_IRQ ] = state - > RegBank [ IRQBANK ] ;
}
if ( state - > Spsr [ FIQBANK ] ! = mirror_register_file [ SPSR_FIRQ ] ) {
fprintf ( state - > state_log , " SPSR_FIRQ:0x%x \n " , state - > Spsr [ FIQBANK ] ) ;
mirror_register_file [ SPSR_FIRQ ] = state - > RegBank [ FIQBANK ] ;
}
# endif
#if 0
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uint32_t alex = 0 ;
static int flagged = 0 ;
if ( ( flagged = = 0 ) & & ( pc = = 0xb224 ) )
{
flagged + + ;
}
if ( ( flagged = = 1 ) & & ( pc = = 0x1a800 ) )
{
flagged + + ;
}
if ( flagged = = 3 ) {
printf ( " ---|%p|--- %x \n " , pc , state - > NumInstrs ) ;
for ( alex = 0 ; alex < 15 ; alex + + )
{
printf ( " R%02d % 8x \n " , alex , state - > Reg [ alex ] ) ;
}
printf ( " R%02d % 8x \n " , alex , state - > Reg [ alex ] - 8 ) ;
printf ( " CPS %x%07x \n " , ( state - > NFlag < < 3 | state - > ZFlag < < 2 | state - > CFlag < < 1 | state - > VFlag ) , state - > Cpsr & 0xfffffff ) ;
} else {
if ( state - > NumInstrs < 0x400000 )
{
//exit(-1);
}
}
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# endif
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if ( state - > EventSet )
ARMul_EnvokeEvent ( state ) ;
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#if 0
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/* do profiling for code coverage */
if ( skyeye_config . code_cov . prof_on )
cov_prof ( EXEC_FLAG , pc ) ;
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# endif
//2003-07-11 chy: for test
#if 0
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if ( skyeye_config . log . logon > = 1 ) {
if ( state - > NumInstrs > = skyeye_config . log . start & &
state - > NumInstrs < = skyeye_config . log . end ) {
static int mybegin = 0 ;
static int myinstrnum = 0 ;
if ( mybegin = = 0 )
mybegin = 1 ;
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#if 0
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if ( state - > NumInstrs = = 3695 ) {
printf ( " ***********SKYEYE: numinstr = 3695 \n " ) ;
}
static int mybeg2 = 0 ;
static int mybeg3 = 0 ;
static int mybeg4 = 0 ;
static int mybeg5 = 0 ;
if ( pc = = 0xa0008000 ) {
//mybegin=1;
printf ( " ************SKYEYE: real vmlinux begin now numinstr is %llu **************** \n " , state - > NumInstrs ) ;
}
//chy 2003-09-02 test fiq
if ( state - > NumInstrs = = 67347000 ) {
printf ( " ***********SKYEYE: numinstr = 67347000, begin log \n " ) ;
mybegin = 1 ;
}
if ( pc = = 0xc00087b4 ) { //numinstr=67348714
mybegin = 1 ;
printf ( " ************SKYEYE: test irq now numinstr is %llu **************** \n " , state - > NumInstrs ) ;
}
if ( pc = = 0xc00087b8 ) { //in start_kernel::sti()
mybeg4 = 1 ;
printf ( " ************SKYEYE: startkerenl: sti now numinstr is %llu ******** \n " , state - > NumInstrs ) ;
}
/*if (pc==0xc001e4f4||pc==0xc001e4f8||pc==0xc001e4fc||pc==0xc001e500||pc==0xffff0004) { //MRA instr */
if ( pc = = 0xc001e500 ) { //MRA instr
mybeg5 = 1 ;
printf ( " ************SKYEYE: MRA instr now numinstr is %llu ******** \n " , state - > NumInstrs ) ;
}
if ( pc > = 0xc0000000 & & mybeg2 = = 0 ) {
mybeg2 = 1 ;
printf ( " ************SKYEYE: enable mmu&cache, now numinstr is %llu ************** \n " , state - > NumInstrs ) ;
SKYEYE_OUTREGS ( stderr ) ;
printf ( " ************************************************************************ \n " ) ;
}
//chy 2003-09-01 test after tlb-flush
if ( pc = = 0xc00261ac ) {
//sleep(2);
mybeg3 = 1 ;
printf ( " ************SKYEYE: after tlb-flush numinstr is %llu **************** \n " , state - > NumInstrs ) ;
}
if ( mybeg3 = = 1 ) {
SKYEYE_OUTREGS ( skyeye_logfd ) ;
SKYEYE_OUTMOREREGS ( skyeye_logfd ) ;
fprintf ( skyeye_logfd , " \n " ) ;
}
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# endif
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if ( mybegin = = 1 ) {
//fprintf(skyeye_logfd,"p %x,i %x,d %x,l %x,",pc,instr,decoded,loaded);
//chy for test 20050729
/*if (state->NumInstrs>=3302294) {
if ( pc = = 0x100c9d4 & & instr = = 0xe1b0f00e ) {
chy_debug ( ) ;
printf ( " ********************************************* \n " ) ;
printf ( " ******SKYEYE N %llx :p %x,i %x \n SKYEYE****** \n " , state - > NumInstrs , pc , instr ) ;
printf ( " ********************************************* \n " ) ;
}
*/
if ( skyeye_config . log . logon > = 1 )
/*
fprintf ( skyeye_logfd ,
" N %llx :p %x,i %x, " ,
state - > NumInstrs , pc ,
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# ifdef MODET
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TFLAG ? instr & 0xffff : instr
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# else
2014-04-01 18:18:52 -04:00
instr
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# endif
2014-04-01 18:18:52 -04:00
) ;
*/
fprintf ( skyeye_logfd , " pc=0x%x,r3=0x%x \n " , pc , state - > Reg [ 3 ] ) ;
if ( skyeye_config . log . logon > = 2 )
SKYEYE_OUTREGS ( skyeye_logfd ) ;
if ( skyeye_config . log . logon > = 3 )
SKYEYE_OUTMOREREGS
( skyeye_logfd ) ;
//fprintf (skyeye_logfd, "\n");
if ( skyeye_config . log . length > 0 ) {
myinstrnum + + ;
if ( myinstrnum > =
skyeye_config . log .
length ) {
myinstrnum = 0 ;
fflush ( skyeye_logfd ) ;
fseek ( skyeye_logfd ,
0L , SEEK_SET ) ;
}
}
}
//SKYEYE_OUTREGS(skyeye_logfd);
//SKYEYE_OUTMOREREGS(skyeye_logfd);
}
}
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# endif
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#if 0 /* Enable this for a helpful bit of debugging when tracing is needed. */
fprintf ( stderr , " pc: %x, instr: %x \n " , pc & ~ 1 , instr ) ;
if ( instr = = 0 )
abort ( ) ;
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# endif
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#if 0 /* Enable this code to help track down stack alignment bugs. */
{
static ARMword old_sp = - 1 ;
if ( old_sp ! = state - > Reg [ 13 ] ) {
old_sp = state - > Reg [ 13 ] ;
fprintf ( stderr ,
" pc: %08x: SP set to %08x%s \n " ,
pc & ~ 1 , old_sp ,
( old_sp % 8 ) ? " [UNALIGNED!] " : " " ) ;
}
}
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# endif
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/* Any exceptions ? */
if ( state - > NresetSig = = LOW ) {
ARMul_Abort ( state , ARMul_ResetV ) ;
/*added energy_prof statement by ksh in 2004-11-26 */
//chy 2005-07-28 for standalone
//ARMul_do_energy(state,instr,pc);
break ;
}
else if ( ! state - > NfiqSig & & ! FFLAG ) {
ARMul_Abort ( state , ARMul_FIQV ) ;
/*added energy_prof statement by ksh in 2004-11-26 */
//chy 2005-07-28 for standalone
//ARMul_do_energy(state,instr,pc);
break ;
}
else if ( ! state - > NirqSig & & ! IFLAG ) {
ARMul_Abort ( state , ARMul_IRQV ) ;
/*added energy_prof statement by ksh in 2004-11-26 */
//chy 2005-07-28 for standalone
//ARMul_do_energy(state,instr,pc);
break ;
}
2013-09-17 23:03:54 -04:00
//teawater add for arm2x86 2005.04.26-------------------------------------------
#if 0
// if (state->pc == 0xc011a868 || state->pc == 0xc011a86c) {
if ( state - > NumInstrs = = 1671574 | | state - > NumInstrs = = 1671573 | | state - > NumInstrs = = 1671572
| | state - > NumInstrs = = 1671575 ) {
for ( reg_index = 0 ; reg_index < 16 ; reg_index + + ) {
printf ( " R%d:%x \t " , reg_index , state - > Reg [ reg_index ] ) ;
}
printf ( " \n " ) ;
}
# endif
2014-04-01 18:18:52 -04:00
if ( state - > tea_pc ) {
int i ;
if ( state - > tea_reg_fd ) {
fprintf ( state - > tea_reg_fd , " \n " ) ;
for ( i = 0 ; i < 15 ; i + + ) {
fprintf ( state - > tea_reg_fd , " %x, " ,
state - > Reg [ i ] ) ;
}
fprintf ( state - > tea_reg_fd , " %x, " , pc ) ;
state - > Cpsr = ARMul_GetCPSR ( state ) ;
fprintf ( state - > tea_reg_fd , " %x \n " ,
state - > Cpsr ) ;
}
else {
printf ( " \n " ) ;
for ( i = 0 ; i < 15 ; i + + ) {
printf ( " %x, " , state - > Reg [ i ] ) ;
}
printf ( " %x, " , pc ) ;
state - > Cpsr = ARMul_GetCPSR ( state ) ;
printf ( " %x \n " , state - > Cpsr ) ;
}
}
2013-09-17 23:03:54 -04:00
//AJ2D--------------------------------------------------------------------------
2014-04-01 18:18:52 -04:00
if ( state - > CallDebug > 0 ) {
instr = ARMul_Debug ( state , pc , instr ) ;
if ( state - > Emulate < ONCE ) {
state - > NextInstr = RESUME ;
break ;
}
if ( state - > Debug ) {
fprintf ( stderr ,
" sim: At %08lx Instr %08lx Mode %02lx \n " ,
pc , instr , state - > Mode ) ;
( void ) fgetc ( stdin ) ;
}
}
else if ( state - > Emulate < ONCE ) {
state - > NextInstr = RESUME ;
break ;
}
//io_do_cycle (state);
state - > NumInstrs + + ;
#if 0
if ( state - > NumInstrs % 10000000 = = 0 ) {
printf ( " 10 MIPS instr have been executed \n " ) ;
}
# endif
2013-09-17 23:03:54 -04:00
# ifdef MODET
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/* Provide Thumb instruction decoding. If the processor is in Thumb
mode , then we can simply decode the Thumb instruction , and map it
to the corresponding ARM instruction ( by directly loading the
instr variable , and letting the normal ARM simulator
execute ) . There are some caveats to ensure that the correct
pipelined PC value is used when executing Thumb code , and also for
dealing with the BL instruction . */
if ( TFLAG ) {
2014-04-03 19:03:55 -04:00
ARMword new_instr ;
2014-04-01 18:18:52 -04:00
/* Check if in Thumb mode. */
2014-04-03 19:03:55 -04:00
switch ( ARMul_ThumbDecode ( state , pc , instr , & new_instr ) ) {
2014-04-01 18:18:52 -04:00
case t_undefined :
/* This is a Thumb instruction. */
ARMul_UndefInstr ( state , instr ) ;
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
case t_branch :
/* Already processed. */
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
case t_decoded :
/* ARM instruction available. */
//printf("t decode %04lx -> %08lx\n", instr & 0xffff, new);
2014-04-03 19:03:55 -04:00
instr = new_instr ;
2014-04-01 18:18:52 -04:00
/* So continue instruction decoding. */
break ;
default :
break ;
}
}
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
/* Check the condition codes. */
if ( ( temp = TOPBITS ( 28 ) ) = = AL ) {
/* Vile deed in the need for speed. */
goto mainswitch ;
}
/* Check the condition code. */
switch ( ( int ) TOPBITS ( 28 ) ) {
case AL :
temp = TRUE ;
break ;
case NV :
/* shenoubang add for armv7 instr dmb 2012-3-11 */
if ( state - > is_v7 ) {
if ( ( instr & 0x0fffff00 ) = = 0x057ff000 ) {
switch ( ( instr > > 4 ) & 0xf ) {
case 4 : /* dsb */
case 5 : /* dmb */
case 6 : /* isb */
// TODO: do no implemented thes instr
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
}
}
/* dyf add for armv6 instruct CPS 2010.9.17 */
if ( state - > is_v6 ) {
/* clrex do nothing here temporary */
if ( instr = = 0xf57ff01f ) {
//printf("clrex \n");
ERROR_LOG ( ARM11 , " Instr = 0x%x, pc = 0x%x, clrex instr!! \n " , instr , pc ) ;
2013-09-17 23:03:54 -04:00
#if 0
2014-04-01 18:18:52 -04:00
int i ;
for ( i = 0 ; i < 128 ; i + + ) {
state - > exclusive_tag_array [ i ] = 0xffffffff ;
}
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
/* shenoubang 2012-3-14 refer the dyncom_interpreter */
state - > exclusive_tag_array [ 0 ] = 0xFFFFFFFF ;
state - > exclusive_access_state = 0 ;
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
if ( BITS ( 20 , 27 ) = = 0x10 ) {
if ( BIT ( 19 ) ) {
if ( BIT ( 8 ) ) {
if ( BIT ( 18 ) )
state - > Cpsr | = 1 < < 8 ;
else
state - > Cpsr & = ~ ( 1 < < 8 ) ;
}
if ( BIT ( 7 ) ) {
if ( BIT ( 18 ) )
state - > Cpsr | = 1 < < 7 ;
else
state - > Cpsr & = ~ ( 1 < < 7 ) ;
ASSIGNINT ( state - > Cpsr & INTBITS ) ;
}
if ( BIT ( 6 ) ) {
if ( BIT ( 18 ) )
state - > Cpsr | = 1 < < 6 ;
else
state - > Cpsr & = ~ ( 1 < < 6 ) ;
ASSIGNINT ( state - > Cpsr & INTBITS ) ;
}
}
if ( BIT ( 17 ) ) {
state - > Cpsr | = BITS ( 0 , 4 ) ;
printf ( " skyeye test state->Mode \n " ) ;
if ( state - > Mode ! = ( state - > Cpsr & MODEBITS ) ) {
state - > Mode =
ARMul_SwitchMode ( state , state - > Mode ,
state - > Cpsr & MODEBITS ) ;
state - > NtransSig = ( state - > Mode & 3 ) ? HIGH : LOW ;
}
}
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
}
if ( state - > is_v5 ) {
if ( BITS ( 25 , 27 ) = = 5 ) { /* BLX(1) */
ARMword dest ;
state - > Reg [ 14 ] = pc + 4 ;
/* Force entry into Thumb mode. */
dest = pc + 8 + 1 ;
if ( BIT ( 23 ) )
dest + = ( NEGBRANCH +
( BIT ( 24 ) < < 1 ) ) ;
else
dest + = POSBRANCH +
( BIT ( 24 ) < < 1 ) ;
WriteR15Branch ( state , dest ) ;
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
else if ( ( instr & 0xFC70F000 ) = = 0xF450F000 ) {
/* The PLD instruction. Ignored. */
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
else if ( ( ( instr & 0xfe500f00 ) = = 0xfc100100 )
| | ( ( instr & 0xfe500f00 ) = =
0xfc000100 ) ) {
/* wldrw and wstrw are unconditional. */
goto mainswitch ;
}
else {
/* UNDEFINED in v5, UNPREDICTABLE in v3, v4, non executed in v1, v2. */
ARMul_UndefInstr ( state , instr ) ;
}
}
temp = FALSE ;
break ;
case EQ :
temp = ZFLAG ;
break ;
case NE :
temp = ! ZFLAG ;
break ;
case VS :
temp = VFLAG ;
break ;
case VC :
temp = ! VFLAG ;
break ;
case MI :
temp = NFLAG ;
break ;
case PL :
temp = ! NFLAG ;
break ;
case CS :
temp = CFLAG ;
break ;
case CC :
temp = ! CFLAG ;
break ;
case HI :
temp = ( CFLAG & & ! ZFLAG ) ;
break ;
case LS :
temp = ( ! CFLAG | | ZFLAG ) ;
break ;
case GE :
temp = ( ( ! NFLAG & & ! VFLAG ) | | ( NFLAG & & VFLAG ) ) ;
break ;
case LT :
temp = ( ( NFLAG & & ! VFLAG ) | | ( ! NFLAG & & VFLAG ) ) ;
break ;
case GT :
temp = ( ( ! NFLAG & & ! VFLAG & & ! ZFLAG )
| | ( NFLAG & & VFLAG & & ! ZFLAG ) ) ;
break ;
case LE :
temp = ( ( NFLAG & & ! VFLAG ) | | ( ! NFLAG & & VFLAG ) )
| | ZFLAG ;
break ;
} /* cc check */
2013-09-17 23:03:54 -04:00
//chy 2003-08-24 now #if 0 .... #endif process cp14, cp15.reg14, I disable it...
#if 0
2014-04-01 18:18:52 -04:00
/* Handle the Clock counter here. */
if ( state - > is_XScale ) {
ARMword cp14r0 ;
int ok ;
ok = state - > CPRead [ 14 ] ( state , 0 , & cp14r0 ) ;
if ( ok & & ( cp14r0 & ARMul_CP14_R0_ENABLE ) ) {
unsigned int newcycles , nowtime =
ARMul_Time ( state ) ;
newcycles = nowtime - state - > LastTime ;
state - > LastTime = nowtime ;
if ( cp14r0 & ARMul_CP14_R0_CCD ) {
if ( state - > CP14R0_CCD = = - 1 )
state - > CP14R0_CCD = newcycles ;
else
state - > CP14R0_CCD + =
newcycles ;
if ( state - > CP14R0_CCD > = 64 ) {
newcycles = 0 ;
while ( state - > CP14R0_CCD > =
64 )
state - > CP14R0_CCD - =
64 ,
newcycles + + ;
goto check_PMUintr ;
}
}
else {
ARMword cp14r1 ;
int do_int = 0 ;
state - > CP14R0_CCD = - 1 ;
check_PMUintr :
cp14r0 | = ARMul_CP14_R0_FLAG2 ;
( void ) state - > CPWrite [ 14 ] ( state , 0 ,
cp14r0 ) ;
ok = state - > CPRead [ 14 ] ( state , 1 ,
& cp14r1 ) ;
/* Coded like this for portability. */
while ( ok & & newcycles ) {
if ( cp14r1 = = 0xffffffff ) {
cp14r1 = 0 ;
do_int = 1 ;
}
else
cp14r1 + + ;
newcycles - - ;
}
( void ) state - > CPWrite [ 14 ] ( state , 1 ,
cp14r1 ) ;
if ( do_int
& & ( cp14r0 &
ARMul_CP14_R0_INTEN2 ) ) {
ARMword temp ;
if ( state - >
CPRead [ 13 ] ( state , 8 ,
& temp )
& & ( temp &
ARMul_CP13_R8_PMUS ) )
ARMul_Abort ( state ,
ARMul_FIQV ) ;
else
ARMul_Abort ( state ,
ARMul_IRQV ) ;
}
}
}
}
/* Handle hardware instructions breakpoints here. */
if ( state - > is_XScale ) {
if ( ( pc | 3 ) = = ( read_cp15_reg ( 14 , 0 , 8 ) | 2 )
| | ( pc | 3 ) = = ( read_cp15_reg ( 14 , 0 , 9 ) | 2 ) ) {
if ( XScale_debug_moe
( state , ARMul_CP14_R10_MOE_IB ) )
ARMul_OSHandleSWI ( state ,
SWI_Breakpoint ) ;
}
}
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# endif
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/* Actual execution of instructions begins here. */
/* If the condition codes don't match, stop here. */
if ( temp ) {
mainswitch :
if ( state - > is_XScale ) {
if ( BIT ( 20 ) = = 0 & & BITS ( 25 , 27 ) = = 0 ) {
if ( BITS ( 4 , 7 ) = = 0xD ) {
/* XScale Load Consecutive insn. */
ARMword temp =
GetLS7RHS ( state ,
instr ) ;
ARMword temp2 =
BIT ( 23 ) ? LHS +
temp : LHS - temp ;
ARMword addr =
BIT ( 24 ) ? temp2 :
LHS ;
if ( BIT ( 12 ) )
ARMul_UndefInstr
( state ,
instr ) ;
else if ( addr & 7 )
/* Alignment violation. */
ARMul_Abort ( state ,
ARMul_DataAbortV ) ;
else {
int wb = BIT ( 21 )
| |
( ! BIT ( 24 ) ) ;
state - > Reg [ BITS
( 12 , 15 ) ] =
ARMul_LoadWordN
( state , addr ) ;
state - > Reg [ BITS
( 12 ,
15 ) + 1 ] =
ARMul_LoadWordN
( state ,
addr + 4 ) ;
if ( wb )
LSBase = temp2 ;
}
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
else if ( BITS ( 4 , 7 ) = = 0xF ) {
/* XScale Store Consecutive insn. */
ARMword temp =
GetLS7RHS ( state ,
instr ) ;
ARMword temp2 =
BIT ( 23 ) ? LHS +
temp : LHS - temp ;
ARMword addr =
BIT ( 24 ) ? temp2 :
LHS ;
if ( BIT ( 12 ) )
ARMul_UndefInstr
( state ,
instr ) ;
else if ( addr & 7 )
/* Alignment violation. */
ARMul_Abort ( state ,
ARMul_DataAbortV ) ;
else {
ARMul_StoreWordN
( state , addr ,
state - >
Reg [ BITS
( 12 ,
15 ) ] ) ;
ARMul_StoreWordN
( state ,
addr + 4 ,
state - >
Reg [ BITS
( 12 ,
15 ) +
1 ] ) ;
if ( BIT ( 21 )
| | ! BIT ( 24 ) )
LSBase = temp2 ;
}
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
}
//chy 2003-09-03 TMRRC(iwmmxt.c) and MRA has the same decoded instr????
//Now, I commit iwmmxt process, may be future, I will change it!!!!
//if (ARMul_HandleIwmmxt (state, instr))
// _assert_msg_(ARM11, false, "disabled skyeye code 'goto donext'"); //goto donext;
}
/* shenoubang sbfx and ubfx instr 2012-3-16 */
if ( state - > is_v6 ) {
unsigned int m , lsb , width , Rd , Rn , data ;
Rd = Rn = lsb = width = data = m = 0 ;
//printf("helloworld\n");
if ( ( ( ( int ) BITS ( 21 , 27 ) ) = = 0x3f ) & & ( ( ( int ) BITS ( 4 , 6 ) ) = = 0x5 ) ) {
m = ( unsigned ) BITS ( 7 , 11 ) ;
width = ( unsigned ) BITS ( 16 , 20 ) ;
Rd = ( unsigned ) BITS ( 12 , 15 ) ;
Rn = ( unsigned ) BITS ( 0 , 3 ) ;
if ( ( Rd = = 15 ) | | ( Rn = = 15 ) ) {
ARMul_UndefInstr ( state , instr ) ;
}
else if ( ( m + width ) < 32 ) {
data = state - > Reg [ Rn ] ;
state - > Reg [ Rd ] ^ = state - > Reg [ Rd ] ;
state - > Reg [ Rd ] =
( ( ARMword ) ( data < < ( 31 - ( m + width ) ) ) > > ( ( 31 - ( m + width ) ) + ( m ) ) ) ;
//SKYEYE_LOG_IN_CLR(RED, "UBFX: In %s, line = %d, Reg_src[%d] = 0x%x, Reg_d[%d] = 0x%x, m = %d, width = %d, Rd = %d, Rn = %d\n",
// __FUNCTION__, __LINE__, Rn, data, Rd, state->Reg[Rd], m, width + 1, Rd, Rn);
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
} // ubfx instr
else if ( ( ( ( int ) BITS ( 21 , 27 ) ) = = 0x3d ) & & ( ( ( int ) BITS ( 4 , 6 ) ) = = 0x5 ) ) {
int tmp = 0 ;
Rd = BITS ( 12 , 15 ) ; Rn = BITS ( 0 , 3 ) ;
lsb = BITS ( 7 , 11 ) ; width = BITS ( 16 , 20 ) ;
if ( ( Rd = = 15 ) | | ( Rn = = 15 ) ) {
ARMul_UndefInstr ( state , instr ) ;
}
else if ( ( lsb + width ) < 32 ) {
state - > Reg [ Rd ] ^ = state - > Reg [ Rd ] ;
data = state - > Reg [ Rn ] ;
tmp = ( data < < ( 32 - ( lsb + width + 1 ) ) ) ;
state - > Reg [ Rd ] = ( tmp > > ( 32 - ( lsb + width + 1 ) ) ) ;
/ / SKYEYE_LOG_IN_CLR ( RED , " sbfx: In %s, line = %d, pc = 0x%x, instr = 0x%x,Rd = 0x%x, \
Rn = 0 x % x , lsb = % d , width = % d , Rs [ % d ] = 0 x % x , Rd [ % d ] = 0 x % x \ n " ,
// __func__, __LINE__, pc, instr, Rd, Rn, lsb, width + 1, Rn, state->Reg[Rn], Rd, state->Reg[Rd]);
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
} // sbfx instr
else if ( ( ( ( int ) BITS ( 21 , 27 ) ) = = 0x3e ) & & ( ( int ) BITS ( 4 , 6 ) = = 0x1 ) ) {
//(ARMword)(instr<<(31-(n))) >> ((31-(n))+(m))
unsigned msb , tmp_rn , tmp_rd , dst ;
msb = tmp_rd = tmp_rn = dst = 0 ;
Rd = BITS ( 12 , 15 ) ; Rn = BITS ( 0 , 3 ) ;
lsb = BITS ( 7 , 11 ) ; msb = BITS ( 16 , 20 ) ;
if ( ( Rd = = 15 ) ) {
ARMul_UndefInstr ( state , instr ) ;
}
else if ( ( Rn = = 15 ) ) {
data = state - > Reg [ Rd ] ;
tmp_rd = ( ( ARMword ) ( data < < ( 31 - lsb ) ) > > ( 31 - lsb ) ) ;
dst = ( ( data > > msb ) < < ( msb - lsb ) ) ;
dst = ( dst < < lsb ) | tmp_rd ;
DEBUG_LOG ( ARM11 , " BFC instr: msb = %d, lsb = %d, Rd[%d] : 0x%x, dst = 0x%x \n " ,
msb , lsb , Rd , state - > Reg [ Rd ] , dst ) ;
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
} // bfc instr
else if ( ( ( msb > = lsb ) & & ( msb < 32 ) ) ) {
data = state - > Reg [ Rn ] ;
tmp_rn = ( ( ARMword ) ( data < < ( 31 - ( msb - lsb ) ) ) > > ( 31 - ( msb - lsb ) ) ) ;
data = state - > Reg [ Rd ] ;
tmp_rd = ( ( ARMword ) ( data < < ( 31 - lsb ) ) > > ( 31 - lsb ) ) ;
dst = ( ( data > > msb ) < < ( msb - lsb ) ) | tmp_rn ;
dst = ( dst < < lsb ) | tmp_rd ;
DEBUG_LOG ( ARM11 , " BFI instr:msb = %d, lsb = %d, Rd[%d] : 0x%x, Rn[%d]: 0x%x, dst = 0x%x \n " ,
msb , lsb , Rd , state - > Reg [ Rd ] , Rn , state - > Reg [ Rn ] , dst ) ;
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
} // bfi instr
}
}
switch ( ( int ) BITS ( 20 , 27 ) ) {
/* Data Processing Register RHS Instructions. */
case 0x00 : /* AND reg and MUL */
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# ifdef MODET
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if ( BITS ( 4 , 11 ) = = 0xB ) {
/* STRH register offset, no write-back, down, post indexed. */
SHDOWNWB ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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if ( BITS ( 4 , 7 ) = = 9 ) {
/* MUL */
rhs = state - > Reg [ MULRHSReg ] ;
//if (MULLHSReg == MULDESTReg) {
if ( 0 ) { /* For armv6, the restriction is removed */
UNDEF_MULDestEQOp1 ;
state - > Reg [ MULDESTReg ] = 0 ;
}
else if ( MULDESTReg ! = 15 )
state - > Reg [ MULDESTReg ] =
state - >
Reg [ MULLHSReg ] * rhs ;
else
UNDEF_MULPCDest ;
for ( dest = 0 , temp = 0 ; dest < 32 ;
dest + + )
if ( rhs & ( 1L < < dest ) )
temp = dest ;
/* Mult takes this many/2 I cycles. */
ARMul_Icycles ( state ,
ARMul_MultTable [ temp ] ,
0L ) ;
}
else {
/* AND reg. */
rhs = DPRegRHS ;
dest = LHS & rhs ;
WRITEDEST ( dest ) ;
}
break ;
case 0x01 : /* ANDS reg and MULS */
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# ifdef MODET
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if ( ( BITS ( 4 , 11 ) & 0xF9 ) = = 0x9 )
/* LDR register offset, no write-back, down, post indexed. */
LHPOSTDOWN ( ) ;
/* Fall through to rest of decoding. */
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# endif
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if ( BITS ( 4 , 7 ) = = 9 ) {
/* MULS */
rhs = state - > Reg [ MULRHSReg ] ;
//if (MULLHSReg == MULDESTReg) {
if ( 0 ) {
printf ( " Something in %d line \n " , __LINE__ ) ;
UNDEF_WARNING ;
UNDEF_MULDestEQOp1 ;
state - > Reg [ MULDESTReg ] = 0 ;
CLEARN ;
SETZ ;
}
else if ( MULDESTReg ! = 15 ) {
dest = state - > Reg [ MULLHSReg ] *
rhs ;
ARMul_NegZero ( state , dest ) ;
state - > Reg [ MULDESTReg ] = dest ;
}
else
UNDEF_MULPCDest ;
for ( dest = 0 , temp = 0 ; dest < 32 ;
dest + + )
if ( rhs & ( 1L < < dest ) )
temp = dest ;
/* Mult takes this many/2 I cycles. */
ARMul_Icycles ( state ,
ARMul_MultTable [ temp ] ,
0L ) ;
}
else {
/* ANDS reg. */
rhs = DPSRegRHS ;
dest = LHS & rhs ;
WRITESDEST ( dest ) ;
}
break ;
case 0x02 : /* EOR reg and MLA */
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# ifdef MODET
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if ( BITS ( 4 , 11 ) = = 0xB ) {
/* STRH register offset, write-back, down, post indexed. */
SHDOWNWB ( ) ;
break ;
}
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# endif
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if ( BITS ( 4 , 7 ) = = 9 ) { /* MLA */
rhs = state - > Reg [ MULRHSReg ] ;
#if 0
if ( MULLHSReg = = MULDESTReg ) {
UNDEF_MULDestEQOp1 ;
state - > Reg [ MULDESTReg ] =
state - > Reg [ MULACCReg ] ;
}
else if ( MULDESTReg ! = 15 ) {
# endif
if ( MULDESTReg ! = 15 ) {
state - > Reg [ MULDESTReg ] =
state - >
Reg [ MULLHSReg ] * rhs +
state - > Reg [ MULACCReg ] ;
}
else
UNDEF_MULPCDest ;
for ( dest = 0 , temp = 0 ; dest < 32 ;
dest + + )
if ( rhs & ( 1L < < dest ) )
temp = dest ;
/* Mult takes this many/2 I cycles. */
ARMul_Icycles ( state ,
ARMul_MultTable [ temp ] ,
0L ) ;
}
else {
rhs = DPRegRHS ;
dest = LHS ^ rhs ;
WRITEDEST ( dest ) ;
}
break ;
case 0x03 : /* EORS reg and MLAS */
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# ifdef MODET
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if ( ( BITS ( 4 , 11 ) & 0xF9 ) = = 0x9 )
/* LDR register offset, write-back, down, post-indexed. */
LHPOSTDOWN ( ) ;
/* Fall through to rest of the decoding. */
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# endif
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if ( BITS ( 4 , 7 ) = = 9 ) {
/* MLAS */
rhs = state - > Reg [ MULRHSReg ] ;
//if (MULLHSReg == MULDESTReg) {
if ( 0 ) {
UNDEF_MULDestEQOp1 ;
dest = state - > Reg [ MULACCReg ] ;
ARMul_NegZero ( state , dest ) ;
state - > Reg [ MULDESTReg ] = dest ;
}
else if ( MULDESTReg ! = 15 ) {
dest = state - > Reg [ MULLHSReg ] *
rhs +
state - > Reg [ MULACCReg ] ;
ARMul_NegZero ( state , dest ) ;
state - > Reg [ MULDESTReg ] = dest ;
}
else
UNDEF_MULPCDest ;
for ( dest = 0 , temp = 0 ; dest < 32 ;
dest + + )
if ( rhs & ( 1L < < dest ) )
temp = dest ;
/* Mult takes this many/2 I cycles. */
ARMul_Icycles ( state ,
ARMul_MultTable [ temp ] ,
0L ) ;
}
else {
/* EORS Reg. */
rhs = DPSRegRHS ;
dest = LHS ^ rhs ;
WRITESDEST ( dest ) ;
}
break ;
case 0x04 : /* SUB reg */
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# ifdef MODET
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if ( BITS ( 4 , 7 ) = = 0xB ) {
/* STRH immediate offset, no write-back, down, post indexed. */
SHDOWNWB ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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rhs = DPRegRHS ;
dest = LHS - rhs ;
WRITEDEST ( dest ) ;
break ;
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case 0x05 : /* SUBS reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 7 ) & 0x9 ) = = 0x9 )
/* LDR immediate offset, no write-back, down, post indexed. */
LHPOSTDOWN ( ) ;
/* Fall through to the rest of the instruction decoding. */
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# endif
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lhs = LHS ;
rhs = DPRegRHS ;
dest = lhs - rhs ;
if ( ( lhs > = rhs ) | | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , lhs , rhs ,
dest ) ;
ARMul_SubOverflow ( state , lhs , rhs ,
dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x06 : /* RSB reg */
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# ifdef MODET
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if ( BITS ( 4 , 7 ) = = 0xB ) {
/* STRH immediate offset, write-back, down, post indexed. */
SHDOWNWB ( ) ;
break ;
}
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# endif
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rhs = DPRegRHS ;
dest = rhs - LHS ;
WRITEDEST ( dest ) ;
break ;
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case 0x07 : /* RSBS reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 7 ) & 0x9 ) = = 0x9 )
/* LDR immediate offset, write-back, down, post indexed. */
LHPOSTDOWN ( ) ;
/* Fall through to remainder of instruction decoding. */
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# endif
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lhs = LHS ;
rhs = DPRegRHS ;
dest = rhs - lhs ;
if ( ( rhs > = lhs ) | | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , rhs , lhs ,
dest ) ;
ARMul_SubOverflow ( state , rhs , lhs ,
dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x08 : /* ADD reg */
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# ifdef MODET
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if ( BITS ( 4 , 11 ) = = 0xB ) {
/* STRH register offset, no write-back, up, post indexed. */
SHUPWB ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
# ifdef MODET
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if ( BITS ( 4 , 7 ) = = 0x9 ) {
/* MULL */
/* 32x32 = 64 */
ARMul_Icycles ( state ,
Multiply64 ( state ,
instr ,
LUNSIGNED ,
LDEFAULT ) ,
0L ) ;
break ;
}
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# endif
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rhs = DPRegRHS ;
dest = LHS + rhs ;
WRITEDEST ( dest ) ;
break ;
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case 0x09 : /* ADDS reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 11 ) & 0xF9 ) = = 0x9 )
/* LDR register offset, no write-back, up, post indexed. */
LHPOSTUP ( ) ;
/* Fall through to remaining instruction decoding. */
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# endif
# ifdef MODET
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if ( BITS ( 4 , 7 ) = = 0x9 ) {
/* MULL */
/* 32x32=64 */
ARMul_Icycles ( state ,
Multiply64 ( state ,
instr ,
LUNSIGNED ,
LSCC ) , 0L ) ;
break ;
}
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# endif
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lhs = LHS ;
rhs = DPRegRHS ;
dest = lhs + rhs ;
ASSIGNZ ( dest = = 0 ) ;
if ( ( lhs | rhs ) > > 30 ) {
/* Possible C,V,N to set. */
ASSIGNN ( NEG ( dest ) ) ;
ARMul_AddCarry ( state , lhs , rhs ,
dest ) ;
ARMul_AddOverflow ( state , lhs , rhs ,
dest ) ;
}
else {
CLEARN ;
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x0a : /* ADC reg */
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# ifdef MODET
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if ( BITS ( 4 , 11 ) = = 0xB ) {
/* STRH register offset, write-back, up, post-indexed. */
SHUPWB ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0x9 ) {
/* MULL */
/* 32x32=64 */
ARMul_Icycles ( state ,
MultiplyAdd64 ( state ,
instr ,
LUNSIGNED ,
LDEFAULT ) ,
0L ) ;
break ;
}
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# endif
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rhs = DPRegRHS ;
dest = LHS + rhs + CFLAG ;
WRITEDEST ( dest ) ;
break ;
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case 0x0b : /* ADCS reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 11 ) & 0xF9 ) = = 0x9 )
/* LDR register offset, write-back, up, post indexed. */
LHPOSTUP ( ) ;
/* Fall through to remaining instruction decoding. */
if ( BITS ( 4 , 7 ) = = 0x9 ) {
/* MULL */
/* 32x32=64 */
ARMul_Icycles ( state ,
MultiplyAdd64 ( state ,
instr ,
LUNSIGNED ,
LSCC ) ,
0L ) ;
break ;
}
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# endif
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lhs = LHS ;
rhs = DPRegRHS ;
dest = lhs + rhs + CFLAG ;
ASSIGNZ ( dest = = 0 ) ;
if ( ( lhs | rhs ) > > 30 ) {
/* Possible C,V,N to set. */
ASSIGNN ( NEG ( dest ) ) ;
ARMul_AddCarry ( state , lhs , rhs ,
dest ) ;
ARMul_AddOverflow ( state , lhs , rhs ,
dest ) ;
}
else {
CLEARN ;
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x0c : /* SBC reg */
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# ifdef MODET
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if ( BITS ( 4 , 7 ) = = 0xB ) {
/* STRH immediate offset, no write-back, up post indexed. */
SHUPWB ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0x9 ) {
/* MULL */
/* 32x32=64 */
ARMul_Icycles ( state ,
Multiply64 ( state ,
instr ,
LSIGNED ,
LDEFAULT ) ,
0L ) ;
break ;
}
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# endif
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rhs = DPRegRHS ;
dest = LHS - rhs - ! CFLAG ;
WRITEDEST ( dest ) ;
break ;
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case 0x0d : /* SBCS reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 7 ) & 0x9 ) = = 0x9 )
/* LDR immediate offset, no write-back, up, post indexed. */
LHPOSTUP ( ) ;
if ( BITS ( 4 , 7 ) = = 0x9 ) {
/* MULL */
/* 32x32=64 */
ARMul_Icycles ( state ,
Multiply64 ( state ,
instr ,
LSIGNED ,
LSCC ) , 0L ) ;
break ;
}
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# endif
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lhs = LHS ;
rhs = DPRegRHS ;
dest = lhs - rhs - ! CFLAG ;
if ( ( lhs > = rhs ) | | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , lhs , rhs ,
dest ) ;
ARMul_SubOverflow ( state , lhs , rhs ,
dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x0e : /* RSC reg */
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# ifdef MODET
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if ( BITS ( 4 , 7 ) = = 0xB ) {
/* STRH immediate offset, write-back, up, post indexed. */
SHUPWB ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0x9 ) {
/* MULL */
/* 32x32=64 */
ARMul_Icycles ( state ,
MultiplyAdd64 ( state ,
instr ,
LSIGNED ,
LDEFAULT ) ,
0L ) ;
break ;
}
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# endif
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rhs = DPRegRHS ;
dest = rhs - LHS - ! CFLAG ;
WRITEDEST ( dest ) ;
break ;
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case 0x0f : /* RSCS reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 7 ) & 0x9 ) = = 0x9 )
/* LDR immediate offset, write-back, up, post indexed. */
LHPOSTUP ( ) ;
/* Fall through to remaining instruction decoding. */
if ( BITS ( 4 , 7 ) = = 0x9 ) {
/* MULL */
/* 32x32=64 */
ARMul_Icycles ( state ,
MultiplyAdd64 ( state ,
instr ,
LSIGNED ,
LSCC ) ,
0L ) ;
break ;
}
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# endif
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lhs = LHS ;
rhs = DPRegRHS ;
dest = rhs - lhs - ! CFLAG ;
if ( ( rhs > = lhs ) | | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , rhs , lhs ,
dest ) ;
ARMul_SubOverflow ( state , rhs , lhs ,
dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x10 : /* TST reg and MRS CPSR and SWP word. */
if ( state - > is_v5e ) {
if ( BIT ( 4 ) = = 0 & & BIT ( 7 ) = = 1 ) {
/* ElSegundo SMLAxy insn. */
ARMword op1 =
state - >
Reg [ BITS ( 0 , 3 ) ] ;
ARMword op2 =
state - >
Reg [ BITS ( 8 , 11 ) ] ;
ARMword Rn =
state - >
Reg [ BITS ( 12 , 15 ) ] ;
if ( BIT ( 5 ) )
op1 > > = 16 ;
if ( BIT ( 6 ) )
op2 > > = 16 ;
op1 & = 0xFFFF ;
op2 & = 0xFFFF ;
if ( op1 & 0x8000 )
op1 - = 65536 ;
if ( op2 & 0x8000 )
op2 - = 65536 ;
op1 * = op2 ;
//printf("SMLA_INST:BB,op1=0x%x, op2=0x%x. Rn=0x%x\n", op1, op2, Rn);
if ( AddOverflow
( op1 , Rn , op1 + Rn ) )
SETS ;
state - > Reg [ BITS ( 16 , 19 ) ] =
op1 + Rn ;
break ;
}
if ( BITS ( 4 , 11 ) = = 5 ) {
/* ElSegundo QADD insn. */
ARMword op1 =
state - >
Reg [ BITS ( 0 , 3 ) ] ;
ARMword op2 =
state - >
Reg [ BITS ( 16 , 19 ) ] ;
ARMword result = op1 + op2 ;
if ( AddOverflow
( op1 , op2 , result ) ) {
result = POS ( result )
? 0x80000000 :
0x7fffffff ;
SETS ;
}
state - > Reg [ BITS ( 12 , 15 ) ] =
result ;
break ;
}
}
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# ifdef MODET
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if ( BITS ( 4 , 11 ) = = 0xB ) {
/* STRH register offset, no write-back, down, pre indexed. */
SHPREDOWN ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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if ( BITS ( 4 , 11 ) = = 9 ) {
/* SWP */
UNDEF_SWPPC ;
temp = LHS ;
BUSUSEDINCPCS ;
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# ifndef MODE32
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if ( VECTORACCESS ( temp )
| | ADDREXCEPT ( temp ) ) {
INTERNALABORT ( temp ) ;
( void ) ARMul_LoadWordN ( state ,
temp ) ;
( void ) ARMul_LoadWordN ( state ,
temp ) ;
}
else
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# endif
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dest = ARMul_SwapWord ( state ,
temp ,
state - >
Reg
[ RHSReg ] ) ;
if ( temp & 3 )
DEST = ARMul_Align ( state ,
temp ,
dest ) ;
else
DEST = dest ;
if ( state - > abortSig | | state - > Aborted )
TAKEABORT ;
}
else if ( ( BITS ( 0 , 11 ) = = 0 ) & & ( LHSReg = = 15 ) ) { /* MRS CPSR */
UNDEF_MRSPC ;
DEST = ECC | EINT | EMODE ;
}
else {
UNDEF_Test ;
}
break ;
case 0x11 : /* TSTP reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 11 ) & 0xF9 ) = = 0x9 )
/* LDR register offset, no write-back, down, pre indexed. */
LHPREDOWN ( ) ;
/* Continue with remaining instruction decode. */
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# endif
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if ( DESTReg = = 15 ) {
/* TSTP reg */
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# ifdef MODE32
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//chy 2006-02-15 if in user mode, can not set cpsr 0:23
//from p165 of ARMARM book
state - > Cpsr = GETSPSR ( state - > Bank ) ;
ARMul_CPSRAltered ( state ) ;
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# else
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rhs = DPRegRHS ;
temp = LHS & rhs ;
SETR15PSR ( temp ) ;
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# endif
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}
else {
/* TST reg */
rhs = DPSRegRHS ;
dest = LHS & rhs ;
ARMul_NegZero ( state , dest ) ;
}
break ;
case 0x12 : /* TEQ reg and MSR reg to CPSR (ARM6). */
if ( state - > is_v5 ) {
if ( BITS ( 4 , 7 ) = = 3 ) {
/* BLX(2) */
ARMword temp ;
if ( TFLAG )
temp = ( pc + 2 ) | 1 ;
else
temp = pc + 4 ;
WriteR15Branch ( state ,
state - >
Reg [ RHSReg ] ) ;
state - > Reg [ 14 ] = temp ;
break ;
}
}
if ( state - > is_v5e ) {
if ( BIT ( 4 ) = = 0 & & BIT ( 7 ) = = 1
& & ( BIT ( 5 ) = = 0
| | BITS ( 12 , 15 ) = = 0 ) ) {
/* ElSegundo SMLAWy/SMULWy insn. */
unsigned long long op1 =
state - >
Reg [ BITS ( 0 , 3 ) ] ;
unsigned long long op2 =
state - >
Reg [ BITS ( 8 , 11 ) ] ;
unsigned long long result ;
if ( BIT ( 6 ) )
op2 > > = 16 ;
if ( op1 & 0x80000000 )
op1 - = 1ULL < < 32 ;
op2 & = 0xFFFF ;
if ( op2 & 0x8000 )
op2 - = 65536 ;
result = ( op1 * op2 ) > > 16 ;
if ( BIT ( 5 ) = = 0 ) {
ARMword Rn =
state - >
Reg [ BITS
( 12 , 15 ) ] ;
if ( AddOverflow
( result , Rn ,
result + Rn ) )
SETS ;
result + = Rn ;
}
state - > Reg [ BITS ( 16 , 19 ) ] =
result ;
break ;
}
if ( BITS ( 4 , 11 ) = = 5 ) {
/* ElSegundo QSUB insn. */
ARMword op1 =
state - >
Reg [ BITS ( 0 , 3 ) ] ;
ARMword op2 =
state - >
Reg [ BITS ( 16 , 19 ) ] ;
ARMword result = op1 - op2 ;
if ( SubOverflow
( op1 , op2 , result ) ) {
result = POS ( result )
? 0x80000000 :
0x7fffffff ;
SETS ;
}
state - > Reg [ BITS ( 12 , 15 ) ] =
result ;
break ;
}
}
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# ifdef MODET
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if ( BITS ( 4 , 11 ) = = 0xB ) {
/* STRH register offset, write-back, down, pre indexed. */
SHPREDOWNWB ( ) ;
break ;
}
if ( BITS ( 4 , 27 ) = = 0x12FFF1 ) {
/* BX */
WriteR15Branch ( state ,
state - > Reg [ RHSReg ] ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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if ( state - > is_v5 ) {
if ( BITS ( 4 , 7 ) = = 0x7 ) {
ARMword value ;
extern int
SWI_vector_installed ;
/* Hardware is allowed to optionally override this
instruction and treat it as a breakpoint . Since
this is a simulator not hardware , we take the position
that if a SWI vector was not installed , then an Abort
vector was probably not installed either , and so
normally this instruction would be ignored , even if an
Abort is generated . This is a bad thing , since GDB
uses this instruction for its breakpoints ( at least in
Thumb mode it does ) . So intercept the instruction here
and generate a breakpoint SWI instead . */
if ( ! SWI_vector_installed )
ARMul_OSHandleSWI
( state ,
SWI_Breakpoint ) ;
else {
/* BKPT - normally this will cause an abort, but on the
XScale we must check the DCSR . */
XScale_set_fsr_far
( state ,
ARMul_CP15_R5_MMU_EXCPT ,
pc ) ;
//if (!XScale_debug_moe
// (state,
// ARMul_CP14_R10_MOE_BT))
// break; // Disabled /bunnei
}
/* Force the next instruction to be refetched. */
state - > NextInstr = RESUME ;
break ;
}
}
if ( DESTReg = = 15 ) {
/* MSR reg to CPSR. */
UNDEF_MSRPC ;
temp = DPRegRHS ;
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# ifdef MODET
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/* Don't allow TBIT to be set by MSR. */
temp & = ~ TBIT ;
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# endif
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ARMul_FixCPSR ( state , instr , temp ) ;
}
else
UNDEF_Test ;
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break ;
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case 0x13 : /* TEQP reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 11 ) & 0xF9 ) = = 0x9 )
/* LDR register offset, write-back, down, pre indexed. */
LHPREDOWNWB ( ) ;
/* Continue with remaining instruction decode. */
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# endif
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if ( DESTReg = = 15 ) {
/* TEQP reg */
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# ifdef MODE32
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state - > Cpsr = GETSPSR ( state - > Bank ) ;
ARMul_CPSRAltered ( state ) ;
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# else
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rhs = DPRegRHS ;
temp = LHS ^ rhs ;
SETR15PSR ( temp ) ;
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# endif
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}
else {
/* TEQ Reg. */
rhs = DPSRegRHS ;
dest = LHS ^ rhs ;
ARMul_NegZero ( state , dest ) ;
}
break ;
case 0x14 : /* CMP reg and MRS SPSR and SWP byte. */
if ( state - > is_v5e ) {
if ( BIT ( 4 ) = = 0 & & BIT ( 7 ) = = 1 ) {
/* ElSegundo SMLALxy insn. */
unsigned long long op1 =
state - >
Reg [ BITS ( 0 , 3 ) ] ;
unsigned long long op2 =
state - >
Reg [ BITS ( 8 , 11 ) ] ;
unsigned long long dest ;
unsigned long long result ;
if ( BIT ( 5 ) )
op1 > > = 16 ;
if ( BIT ( 6 ) )
op2 > > = 16 ;
op1 & = 0xFFFF ;
if ( op1 & 0x8000 )
op1 - = 65536 ;
op2 & = 0xFFFF ;
if ( op2 & 0x8000 )
op2 - = 65536 ;
dest = ( unsigned long long )
state - >
Reg [ BITS ( 16 , 19 ) ] < <
32 ;
dest | = state - >
Reg [ BITS ( 12 , 15 ) ] ;
dest + = op1 * op2 ;
state - > Reg [ BITS ( 12 , 15 ) ] =
dest ;
state - > Reg [ BITS ( 16 , 19 ) ] =
dest > > 32 ;
break ;
}
if ( BITS ( 4 , 11 ) = = 5 ) {
/* ElSegundo QDADD insn. */
ARMword op1 =
state - >
Reg [ BITS ( 0 , 3 ) ] ;
ARMword op2 =
state - >
Reg [ BITS ( 16 , 19 ) ] ;
ARMword op2d = op2 + op2 ;
ARMword result ;
if ( AddOverflow
( op2 , op2 , op2d ) ) {
SETS ;
op2d = POS ( op2d ) ?
0x80000000 :
0x7fffffff ;
}
result = op1 + op2d ;
if ( AddOverflow
( op1 , op2d , result ) ) {
SETS ;
result = POS ( result )
? 0x80000000 :
0x7fffffff ;
}
state - > Reg [ BITS ( 12 , 15 ) ] =
result ;
break ;
}
}
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# ifdef MODET
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if ( BITS ( 4 , 7 ) = = 0xB ) {
/* STRH immediate offset, no write-back, down, pre indexed. */
SHPREDOWN ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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if ( BITS ( 4 , 11 ) = = 9 ) {
/* SWP */
UNDEF_SWPPC ;
temp = LHS ;
BUSUSEDINCPCS ;
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# ifndef MODE32
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if ( VECTORACCESS ( temp )
| | ADDREXCEPT ( temp ) ) {
INTERNALABORT ( temp ) ;
( void ) ARMul_LoadByte ( state ,
temp ) ;
( void ) ARMul_LoadByte ( state ,
temp ) ;
}
else
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# endif
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DEST = ARMul_SwapByte ( state ,
temp ,
state - >
Reg
[ RHSReg ] ) ;
if ( state - > abortSig | | state - > Aborted )
TAKEABORT ;
}
else if ( ( BITS ( 0 , 11 ) = = 0 )
& & ( LHSReg = = 15 ) ) {
/* MRS SPSR */
UNDEF_MRSPC ;
DEST = GETSPSR ( state - > Bank ) ;
}
else
UNDEF_Test ;
break ;
case 0x15 : /* CMPP reg. */
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# ifdef MODET
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if ( ( BITS ( 4 , 7 ) & 0x9 ) = = 0x9 )
/* LDR immediate offset, no write-back, down, pre indexed. */
LHPREDOWN ( ) ;
/* Continue with remaining instruction decode. */
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# endif
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if ( DESTReg = = 15 ) {
/* CMPP reg. */
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# ifdef MODE32
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state - > Cpsr = GETSPSR ( state - > Bank ) ;
ARMul_CPSRAltered ( state ) ;
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# else
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rhs = DPRegRHS ;
temp = LHS - rhs ;
SETR15PSR ( temp ) ;
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# endif
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}
else {
/* CMP reg. */
lhs = LHS ;
rhs = DPRegRHS ;
dest = lhs - rhs ;
ARMul_NegZero ( state , dest ) ;
if ( ( lhs > = rhs )
| | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , lhs ,
rhs , dest ) ;
ARMul_SubOverflow ( state , lhs ,
rhs , dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
}
break ;
case 0x16 : /* CMN reg and MSR reg to SPSR */
if ( state - > is_v5e ) {
if ( BIT ( 4 ) = = 0 & & BIT ( 7 ) = = 1
& & BITS ( 12 , 15 ) = = 0 ) {
/* ElSegundo SMULxy insn. */
ARMword op1 =
state - >
Reg [ BITS ( 0 , 3 ) ] ;
ARMword op2 =
state - >
Reg [ BITS ( 8 , 11 ) ] ;
ARMword Rn =
state - >
Reg [ BITS ( 12 , 15 ) ] ;
if ( BIT ( 5 ) )
op1 > > = 16 ;
if ( BIT ( 6 ) )
op2 > > = 16 ;
op1 & = 0xFFFF ;
op2 & = 0xFFFF ;
if ( op1 & 0x8000 )
op1 - = 65536 ;
if ( op2 & 0x8000 )
op2 - = 65536 ;
state - > Reg [ BITS ( 16 , 19 ) ] =
op1 * op2 ;
break ;
}
if ( BITS ( 4 , 11 ) = = 5 ) {
/* ElSegundo QDSUB insn. */
ARMword op1 =
state - >
Reg [ BITS ( 0 , 3 ) ] ;
ARMword op2 =
state - >
Reg [ BITS ( 16 , 19 ) ] ;
ARMword op2d = op2 + op2 ;
ARMword result ;
if ( AddOverflow
( op2 , op2 , op2d ) ) {
SETS ;
op2d = POS ( op2d ) ?
0x80000000 :
0x7fffffff ;
}
result = op1 - op2d ;
if ( SubOverflow
( op1 , op2d , result ) ) {
SETS ;
result = POS ( result )
? 0x80000000 :
0x7fffffff ;
}
state - > Reg [ BITS ( 12 , 15 ) ] =
result ;
break ;
}
}
if ( state - > is_v5 ) {
if ( BITS ( 4 , 11 ) = = 0xF1
& & BITS ( 16 , 19 ) = = 0xF ) {
/* ARM5 CLZ insn. */
ARMword op1 =
state - >
Reg [ BITS ( 0 , 3 ) ] ;
int result = 32 ;
if ( op1 )
for ( result = 0 ;
( op1 &
0x80000000 ) = =
0 ; op1 < < = 1 )
result + + ;
state - > Reg [ BITS ( 12 , 15 ) ] =
result ;
break ;
}
}
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# ifdef MODET
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if ( BITS ( 4 , 7 ) = = 0xB ) {
/* STRH immediate offset, write-back, down, pre indexed. */
SHPREDOWNWB ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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if ( DESTReg = = 15 ) {
/* MSR */
UNDEF_MSRPC ;
ARMul_FixSPSR ( state , instr ,
DPRegRHS ) ;
}
else {
UNDEF_Test ;
}
break ;
case 0x17 : /* CMNP reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 7 ) & 0x9 ) = = 0x9 )
/* LDR immediate offset, write-back, down, pre indexed. */
LHPREDOWNWB ( ) ;
/* Continue with remaining instruction decoding. */
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# endif
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if ( DESTReg = = 15 ) {
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# ifdef MODE32
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state - > Cpsr = GETSPSR ( state - > Bank ) ;
ARMul_CPSRAltered ( state ) ;
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# else
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rhs = DPRegRHS ;
temp = LHS + rhs ;
SETR15PSR ( temp ) ;
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# endif
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break ;
}
else {
/* CMN reg. */
lhs = LHS ;
rhs = DPRegRHS ;
dest = lhs + rhs ;
ASSIGNZ ( dest = = 0 ) ;
if ( ( lhs | rhs ) > > 30 ) {
/* Possible C,V,N to set. */
ASSIGNN ( NEG ( dest ) ) ;
ARMul_AddCarry ( state , lhs ,
rhs , dest ) ;
ARMul_AddOverflow ( state , lhs ,
rhs , dest ) ;
}
else {
CLEARN ;
CLEARC ;
CLEARV ;
}
}
break ;
case 0x18 : /* ORR reg */
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# ifdef MODET
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/* dyf add armv6 instr strex 2010.9.17 */
if ( state - > is_v6 ) {
if ( BITS ( 4 , 7 ) = = 0x9 )
if ( handle_v6_insn ( state , instr ) )
break ;
}
if ( BITS ( 4 , 11 ) = = 0xB ) {
/* STRH register offset, no write-back, up, pre indexed. */
SHPREUP ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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rhs = DPRegRHS ;
dest = LHS | rhs ;
WRITEDEST ( dest ) ;
break ;
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case 0x19 : /* ORRS reg */
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# ifdef MODET
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/* dyf add armv6 instr ldrex */
if ( state - > is_v6 ) {
if ( BITS ( 4 , 7 ) = = 0x9 ) {
if ( handle_v6_insn ( state , instr ) )
break ;
}
}
if ( ( BITS ( 4 , 11 ) & 0xF9 ) = = 0x9 )
/* LDR register offset, no write-back, up, pre indexed. */
LHPREUP ( ) ;
/* Continue with remaining instruction decoding. */
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# endif
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rhs = DPSRegRHS ;
dest = LHS | rhs ;
WRITESDEST ( dest ) ;
break ;
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case 0x1a : /* MOV reg */
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# ifdef MODET
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if ( BITS ( 4 , 11 ) = = 0xB ) {
/* STRH register offset, write-back, up, pre indexed. */
SHPREUPWB ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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dest = DPRegRHS ;
WRITEDEST ( dest ) ;
break ;
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case 0x1b : /* MOVS reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 11 ) & 0xF9 ) = = 0x9 )
/* LDR register offset, write-back, up, pre indexed. */
LHPREUPWB ( ) ;
/* Continue with remaining instruction decoding. */
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# endif
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dest = DPSRegRHS ;
WRITESDEST ( dest ) ;
break ;
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case 0x1c : /* BIC reg */
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# ifdef MODET
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/* dyf add for STREXB */
if ( state - > is_v6 ) {
if ( BITS ( 4 , 7 ) = = 0x9 ) {
if ( handle_v6_insn ( state , instr ) )
break ;
}
}
if ( BITS ( 4 , 7 ) = = 0xB ) {
/* STRH immediate offset, no write-back, up, pre indexed. */
SHPREUP ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
else if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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rhs = DPRegRHS ;
dest = LHS & ~ rhs ;
WRITEDEST ( dest ) ;
break ;
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case 0x1d : /* BICS reg */
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# ifdef MODET
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/* ladsh P=1 U=1 W=0 L=1 S=1 H=1 */
if ( BITS ( 4 , 7 ) = = 0xF ) {
temp = LHS + GetLS7RHS ( state , instr ) ;
LoadHalfWord ( state , instr , temp , LSIGNED ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xb ) {
/* LDRH immediate offset, no write-back, up, pre indexed. */
temp = LHS + GetLS7RHS ( state , instr ) ;
LoadHalfWord ( state , instr , temp , LUNSIGNED ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xd ) {
// alex-ykl fix: 2011-07-20 missing ldrsb instruction
temp = LHS + GetLS7RHS ( state , instr ) ;
LoadByte ( state , instr , temp , LSIGNED ) ;
break ;
}
/* Continue with instruction decoding. */
/*if ((BITS (4, 7) & 0x9) == 0x9) */
if ( ( BITS ( 4 , 7 ) ) = = 0x9 ) {
/* ldrexb */
if ( state - > is_v6 ) {
if ( handle_v6_insn ( state , instr ) )
break ;
}
/* LDR immediate offset, no write-back, up, pre indexed. */
LHPREUP ( ) ;
}
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# endif
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rhs = DPSRegRHS ;
dest = LHS & ~ rhs ;
WRITESDEST ( dest ) ;
break ;
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case 0x1e : /* MVN reg */
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# ifdef MODET
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if ( BITS ( 4 , 7 ) = = 0xB ) {
/* STRH immediate offset, write-back, up, pre indexed. */
SHPREUPWB ( ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xD ) {
Handle_Load_Double ( state , instr ) ;
break ;
}
if ( BITS ( 4 , 7 ) = = 0xF ) {
Handle_Store_Double ( state , instr ) ;
break ;
}
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# endif
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dest = ~ DPRegRHS ;
WRITEDEST ( dest ) ;
break ;
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case 0x1f : /* MVNS reg */
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# ifdef MODET
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if ( ( BITS ( 4 , 7 ) & 0x9 ) = = 0x9 )
/* LDR immediate offset, write-back, up, pre indexed. */
LHPREUPWB ( ) ;
/* Continue instruction decoding. */
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# endif
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dest = ~ DPSRegRHS ;
WRITESDEST ( dest ) ;
break ;
/* Data Processing Immediate RHS Instructions. */
case 0x20 : /* AND immed */
dest = LHS & DPImmRHS ;
WRITEDEST ( dest ) ;
break ;
case 0x21 : /* ANDS immed */
DPSImmRHS ;
dest = LHS & rhs ;
WRITESDEST ( dest ) ;
break ;
case 0x22 : /* EOR immed */
dest = LHS ^ DPImmRHS ;
WRITEDEST ( dest ) ;
break ;
case 0x23 : /* EORS immed */
DPSImmRHS ;
dest = LHS ^ rhs ;
WRITESDEST ( dest ) ;
break ;
case 0x24 : /* SUB immed */
dest = LHS - DPImmRHS ;
WRITEDEST ( dest ) ;
break ;
case 0x25 : /* SUBS immed */
lhs = LHS ;
rhs = DPImmRHS ;
dest = lhs - rhs ;
if ( ( lhs > = rhs ) | | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , lhs , rhs ,
dest ) ;
ARMul_SubOverflow ( state , lhs , rhs ,
dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x26 : /* RSB immed */
dest = DPImmRHS - LHS ;
WRITEDEST ( dest ) ;
break ;
case 0x27 : /* RSBS immed */
lhs = LHS ;
rhs = DPImmRHS ;
dest = rhs - lhs ;
if ( ( rhs > = lhs ) | | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , rhs , lhs ,
dest ) ;
ARMul_SubOverflow ( state , rhs , lhs ,
dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x28 : /* ADD immed */
dest = LHS + DPImmRHS ;
WRITEDEST ( dest ) ;
break ;
case 0x29 : /* ADDS immed */
lhs = LHS ;
rhs = DPImmRHS ;
dest = lhs + rhs ;
ASSIGNZ ( dest = = 0 ) ;
if ( ( lhs | rhs ) > > 30 ) {
/* Possible C,V,N to set. */
ASSIGNN ( NEG ( dest ) ) ;
ARMul_AddCarry ( state , lhs , rhs ,
dest ) ;
ARMul_AddOverflow ( state , lhs , rhs ,
dest ) ;
}
else {
CLEARN ;
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x2a : /* ADC immed */
dest = LHS + DPImmRHS + CFLAG ;
WRITEDEST ( dest ) ;
break ;
case 0x2b : /* ADCS immed */
lhs = LHS ;
rhs = DPImmRHS ;
dest = lhs + rhs + CFLAG ;
ASSIGNZ ( dest = = 0 ) ;
if ( ( lhs | rhs ) > > 30 ) {
/* Possible C,V,N to set. */
ASSIGNN ( NEG ( dest ) ) ;
ARMul_AddCarry ( state , lhs , rhs ,
dest ) ;
ARMul_AddOverflow ( state , lhs , rhs ,
dest ) ;
}
else {
CLEARN ;
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x2c : /* SBC immed */
dest = LHS - DPImmRHS - ! CFLAG ;
WRITEDEST ( dest ) ;
break ;
case 0x2d : /* SBCS immed */
lhs = LHS ;
rhs = DPImmRHS ;
dest = lhs - rhs - ! CFLAG ;
if ( ( lhs > = rhs ) | | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , lhs , rhs ,
dest ) ;
ARMul_SubOverflow ( state , lhs , rhs ,
dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x2e : /* RSC immed */
dest = DPImmRHS - LHS - ! CFLAG ;
WRITEDEST ( dest ) ;
break ;
case 0x2f : /* RSCS immed */
lhs = LHS ;
rhs = DPImmRHS ;
dest = rhs - lhs - ! CFLAG ;
if ( ( rhs > = lhs ) | | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , rhs , lhs ,
dest ) ;
ARMul_SubOverflow ( state , rhs , lhs ,
dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
WRITESDEST ( dest ) ;
break ;
case 0x30 : /* TST immed */
/* shenoubang 2012-3-14*/
if ( state - > is_v6 ) { /* movw, ARMV6, ARMv7 */
dest ^ = dest ;
dest = BITS ( 16 , 19 ) ;
dest = ( ( dest < < 12 ) | BITS ( 0 , 11 ) ) ;
WRITEDEST ( dest ) ;
//SKYEYE_DBG("In %s, line = %d, pc = 0x%x, instr = 0x%x, R[0:11]: 0x%x, R[16:19]: 0x%x, R[%d]:0x%x\n",
// __func__, __LINE__, pc, instr, BITS(0, 11), BITS(16, 19), DESTReg, state->Reg[DESTReg]);
break ;
}
else {
UNDEF_Test ;
break ;
}
case 0x31 : /* TSTP immed */
if ( DESTReg = = 15 ) {
/* TSTP immed. */
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# ifdef MODE32
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state - > Cpsr = GETSPSR ( state - > Bank ) ;
ARMul_CPSRAltered ( state ) ;
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# else
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temp = LHS & DPImmRHS ;
SETR15PSR ( temp ) ;
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# endif
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}
else {
/* TST immed. */
DPSImmRHS ;
dest = LHS & rhs ;
ARMul_NegZero ( state , dest ) ;
}
break ;
case 0x32 : /* TEQ immed and MSR immed to CPSR */
if ( DESTReg = = 15 )
/* MSR immed to CPSR. */
ARMul_FixCPSR ( state , instr ,
DPImmRHS ) ;
else
UNDEF_Test ;
break ;
case 0x33 : /* TEQP immed */
if ( DESTReg = = 15 ) {
/* TEQP immed. */
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# ifdef MODE32
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state - > Cpsr = GETSPSR ( state - > Bank ) ;
ARMul_CPSRAltered ( state ) ;
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# else
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temp = LHS ^ DPImmRHS ;
SETR15PSR ( temp ) ;
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# endif
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}
else {
DPSImmRHS ; /* TEQ immed */
dest = LHS ^ rhs ;
ARMul_NegZero ( state , dest ) ;
}
break ;
case 0x34 : /* CMP immed */
UNDEF_Test ;
break ;
case 0x35 : /* CMPP immed */
if ( DESTReg = = 15 ) {
/* CMPP immed. */
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# ifdef MODE32
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state - > Cpsr = GETSPSR ( state - > Bank ) ;
ARMul_CPSRAltered ( state ) ;
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# else
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temp = LHS - DPImmRHS ;
SETR15PSR ( temp ) ;
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# endif
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break ;
}
else {
/* CMP immed. */
lhs = LHS ;
rhs = DPImmRHS ;
dest = lhs - rhs ;
ARMul_NegZero ( state , dest ) ;
if ( ( lhs > = rhs )
| | ( ( rhs | lhs ) > > 31 ) ) {
ARMul_SubCarry ( state , lhs ,
rhs , dest ) ;
ARMul_SubOverflow ( state , lhs ,
rhs , dest ) ;
}
else {
CLEARC ;
CLEARV ;
}
}
break ;
case 0x36 : /* CMN immed and MSR immed to SPSR */
if ( DESTReg = = 15 )
ARMul_FixSPSR ( state , instr ,
DPImmRHS ) ;
else
UNDEF_Test ;
break ;
case 0x37 : /* CMNP immed. */
if ( DESTReg = = 15 ) {
/* CMNP immed. */
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# ifdef MODE32
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state - > Cpsr = GETSPSR ( state - > Bank ) ;
ARMul_CPSRAltered ( state ) ;
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# else
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temp = LHS + DPImmRHS ;
SETR15PSR ( temp ) ;
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# endif
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break ;
}
else {
/* CMN immed. */
lhs = LHS ;
rhs = DPImmRHS ;
dest = lhs + rhs ;
ASSIGNZ ( dest = = 0 ) ;
if ( ( lhs | rhs ) > > 30 ) {
/* Possible C,V,N to set. */
ASSIGNN ( NEG ( dest ) ) ;
ARMul_AddCarry ( state , lhs ,
rhs , dest ) ;
ARMul_AddOverflow ( state , lhs ,
rhs , dest ) ;
}
else {
CLEARN ;
CLEARC ;
CLEARV ;
}
}
break ;
case 0x38 : /* ORR immed. */
dest = LHS | DPImmRHS ;
WRITEDEST ( dest ) ;
break ;
case 0x39 : /* ORRS immed. */
DPSImmRHS ;
dest = LHS | rhs ;
WRITESDEST ( dest ) ;
break ;
case 0x3a : /* MOV immed. */
dest = DPImmRHS ;
WRITEDEST ( dest ) ;
break ;
case 0x3b : /* MOVS immed. */
DPSImmRHS ;
WRITESDEST ( rhs ) ;
break ;
case 0x3c : /* BIC immed. */
dest = LHS & ~ DPImmRHS ;
WRITEDEST ( dest ) ;
break ;
case 0x3d : /* BICS immed. */
DPSImmRHS ;
dest = LHS & ~ rhs ;
WRITESDEST ( dest ) ;
break ;
case 0x3e : /* MVN immed. */
dest = ~ DPImmRHS ;
WRITEDEST ( dest ) ;
break ;
case 0x3f : /* MVNS immed. */
DPSImmRHS ;
WRITESDEST ( ~ rhs ) ;
break ;
/* Single Data Transfer Immediate RHS Instructions. */
case 0x40 : /* Store Word, No WriteBack, Post Dec, Immed. */
lhs = LHS ;
if ( StoreWord ( state , instr , lhs ) )
LSBase = lhs - LSImmRHS ;
break ;
case 0x41 : /* Load Word, No WriteBack, Post Dec, Immed. */
lhs = LHS ;
if ( LoadWord ( state , instr , lhs ) )
LSBase = lhs - LSImmRHS ;
break ;
case 0x42 : /* Store Word, WriteBack, Post Dec, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
lhs = LHS ;
temp = lhs - LSImmRHS ;
state - > NtransSig = LOW ;
if ( StoreWord ( state , instr , lhs ) )
LSBase = temp ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x43 : /* Load Word, WriteBack, Post Dec, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( LoadWord ( state , instr , lhs ) )
LSBase = lhs - LSImmRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x44 : /* Store Byte, No WriteBack, Post Dec, Immed. */
lhs = LHS ;
if ( StoreByte ( state , instr , lhs ) )
LSBase = lhs - LSImmRHS ;
break ;
case 0x45 : /* Load Byte, No WriteBack, Post Dec, Immed. */
lhs = LHS ;
if ( LoadByte ( state , instr , lhs , LUNSIGNED ) )
LSBase = lhs - LSImmRHS ;
break ;
case 0x46 : /* Store Byte, WriteBack, Post Dec, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( StoreByte ( state , instr , lhs ) )
LSBase = lhs - LSImmRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x47 : /* Load Byte, WriteBack, Post Dec, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( LoadByte ( state , instr , lhs , LUNSIGNED ) )
LSBase = lhs - LSImmRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x48 : /* Store Word, No WriteBack, Post Inc, Immed. */
lhs = LHS ;
if ( StoreWord ( state , instr , lhs ) )
LSBase = lhs + LSImmRHS ;
break ;
case 0x49 : /* Load Word, No WriteBack, Post Inc, Immed. */
lhs = LHS ;
if ( LoadWord ( state , instr , lhs ) )
LSBase = lhs + LSImmRHS ;
break ;
case 0x4a : /* Store Word, WriteBack, Post Inc, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( StoreWord ( state , instr , lhs ) )
LSBase = lhs + LSImmRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x4b : /* Load Word, WriteBack, Post Inc, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( LoadWord ( state , instr , lhs ) )
LSBase = lhs + LSImmRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x4c : /* Store Byte, No WriteBack, Post Inc, Immed. */
lhs = LHS ;
if ( StoreByte ( state , instr , lhs ) )
LSBase = lhs + LSImmRHS ;
break ;
case 0x4d : /* Load Byte, No WriteBack, Post Inc, Immed. */
lhs = LHS ;
if ( LoadByte ( state , instr , lhs , LUNSIGNED ) )
LSBase = lhs + LSImmRHS ;
break ;
case 0x4e : /* Store Byte, WriteBack, Post Inc, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( StoreByte ( state , instr , lhs ) )
LSBase = lhs + LSImmRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x4f : /* Load Byte, WriteBack, Post Inc, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( LoadByte ( state , instr , lhs , LUNSIGNED ) )
LSBase = lhs + LSImmRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x50 : /* Store Word, No WriteBack, Pre Dec, Immed. */
( void ) StoreWord ( state , instr ,
LHS - LSImmRHS ) ;
break ;
case 0x51 : /* Load Word, No WriteBack, Pre Dec, Immed. */
( void ) LoadWord ( state , instr ,
LHS - LSImmRHS ) ;
break ;
case 0x52 : /* Store Word, WriteBack, Pre Dec, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
temp = LHS - LSImmRHS ;
if ( StoreWord ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x53 : /* Load Word, WriteBack, Pre Dec, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
temp = LHS - LSImmRHS ;
if ( LoadWord ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x54 : /* Store Byte, No WriteBack, Pre Dec, Immed. */
( void ) StoreByte ( state , instr ,
LHS - LSImmRHS ) ;
break ;
case 0x55 : /* Load Byte, No WriteBack, Pre Dec, Immed. */
( void ) LoadByte ( state , instr , LHS - LSImmRHS ,
LUNSIGNED ) ;
break ;
case 0x56 : /* Store Byte, WriteBack, Pre Dec, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
temp = LHS - LSImmRHS ;
if ( StoreByte ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x57 : /* Load Byte, WriteBack, Pre Dec, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
temp = LHS - LSImmRHS ;
if ( LoadByte ( state , instr , temp , LUNSIGNED ) )
LSBase = temp ;
break ;
case 0x58 : /* Store Word, No WriteBack, Pre Inc, Immed. */
( void ) StoreWord ( state , instr ,
LHS + LSImmRHS ) ;
break ;
case 0x59 : /* Load Word, No WriteBack, Pre Inc, Immed. */
( void ) LoadWord ( state , instr ,
LHS + LSImmRHS ) ;
break ;
case 0x5a : /* Store Word, WriteBack, Pre Inc, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
temp = LHS + LSImmRHS ;
if ( StoreWord ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x5b : /* Load Word, WriteBack, Pre Inc, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
temp = LHS + LSImmRHS ;
if ( LoadWord ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x5c : /* Store Byte, No WriteBack, Pre Inc, Immed. */
( void ) StoreByte ( state , instr ,
LHS + LSImmRHS ) ;
break ;
case 0x5d : /* Load Byte, No WriteBack, Pre Inc, Immed. */
( void ) LoadByte ( state , instr , LHS + LSImmRHS ,
LUNSIGNED ) ;
break ;
case 0x5e : /* Store Byte, WriteBack, Pre Inc, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
temp = LHS + LSImmRHS ;
if ( StoreByte ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x5f : /* Load Byte, WriteBack, Pre Inc, Immed. */
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
temp = LHS + LSImmRHS ;
if ( LoadByte ( state , instr , temp , LUNSIGNED ) )
LSBase = temp ;
break ;
/* Single Data Transfer Register RHS Instructions. */
case 0x60 : /* Store Word, No WriteBack, Post Dec, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
if ( StoreWord ( state , instr , lhs ) )
LSBase = lhs - LSRegRHS ;
break ;
case 0x61 : /* Load Word, No WriteBack, Post Dec, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
temp = lhs - LSRegRHS ;
if ( LoadWord ( state , instr , lhs ) )
LSBase = temp ;
break ;
case 0x62 : /* Store Word, WriteBack, Post Dec, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( StoreWord ( state , instr , lhs ) )
LSBase = lhs - LSRegRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x63 : /* Load Word, WriteBack, Post Dec, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
temp = lhs - LSRegRHS ;
state - > NtransSig = LOW ;
if ( LoadWord ( state , instr , lhs ) )
LSBase = temp ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x64 : /* Store Byte, No WriteBack, Post Dec, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
if ( StoreByte ( state , instr , lhs ) )
LSBase = lhs - LSRegRHS ;
break ;
case 0x65 : /* Load Byte, No WriteBack, Post Dec, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
temp = lhs - LSRegRHS ;
if ( LoadByte ( state , instr , lhs , LUNSIGNED ) )
LSBase = temp ;
break ;
case 0x66 : /* Store Byte, WriteBack, Post Dec, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( StoreByte ( state , instr , lhs ) )
LSBase = lhs - LSRegRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x67 : /* Load Byte, WriteBack, Post Dec, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
temp = lhs - LSRegRHS ;
state - > NtransSig = LOW ;
if ( LoadByte ( state , instr , lhs , LUNSIGNED ) )
LSBase = temp ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x68 : /* Store Word, No WriteBack, Post Inc, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
if ( StoreWord ( state , instr , lhs ) )
LSBase = lhs + LSRegRHS ;
break ;
case 0x69 : /* Load Word, No WriteBack, Post Inc, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
temp = lhs + LSRegRHS ;
if ( LoadWord ( state , instr , lhs ) )
LSBase = temp ;
break ;
case 0x6a : /* Store Word, WriteBack, Post Inc, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( StoreWord ( state , instr , lhs ) )
LSBase = lhs + LSRegRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x6b : /* Load Word, WriteBack, Post Inc, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
temp = lhs + LSRegRHS ;
state - > NtransSig = LOW ;
if ( LoadWord ( state , instr , lhs ) )
LSBase = temp ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x6c : /* Store Byte, No WriteBack, Post Inc, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
if ( StoreByte ( state , instr , lhs ) )
LSBase = lhs + LSRegRHS ;
break ;
case 0x6d : /* Load Byte, No WriteBack, Post Inc, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
temp = lhs + LSRegRHS ;
if ( LoadByte ( state , instr , lhs , LUNSIGNED ) )
LSBase = temp ;
break ;
case 0x6e : /* Store Byte, WriteBack, Post Inc, Reg. */
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#if 0
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if ( state - > is_v6 ) {
int Rm = 0 ;
/* utxb */
if ( BITS ( 15 , 19 ) = = 0xf & & BITS ( 4 , 7 ) = = 0x7 ) {
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Rm = ( RHS > > ( 8 * BITS ( 10 , 11 ) ) ) & 0xff ;
DEST = Rm ;
}
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}
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# endif
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if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
state - > NtransSig = LOW ;
if ( StoreByte ( state , instr , lhs ) )
LSBase = lhs + LSRegRHS ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x6f : /* Load Byte, WriteBack, Post Inc, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
lhs = LHS ;
temp = lhs + LSRegRHS ;
state - > NtransSig = LOW ;
if ( LoadByte ( state , instr , lhs , LUNSIGNED ) )
LSBase = temp ;
state - > NtransSig =
( state - > Mode & 3 ) ? HIGH : LOW ;
break ;
case 0x70 : /* Store Word, No WriteBack, Pre Dec, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
( void ) StoreWord ( state , instr ,
LHS - LSRegRHS ) ;
break ;
case 0x71 : /* Load Word, No WriteBack, Pre Dec, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
( void ) LoadWord ( state , instr ,
LHS - LSRegRHS ) ;
break ;
case 0x72 : /* Store Word, WriteBack, Pre Dec, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
temp = LHS - LSRegRHS ;
if ( StoreWord ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x73 : /* Load Word, WriteBack, Pre Dec, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
temp = LHS - LSRegRHS ;
if ( LoadWord ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x74 : /* Store Byte, No WriteBack, Pre Dec, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
( void ) StoreByte ( state , instr ,
LHS - LSRegRHS ) ;
break ;
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case 0x75 : /* Load Byte, No WriteBack, Pre Dec, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
( void ) LoadByte ( state , instr , LHS - LSRegRHS ,
LUNSIGNED ) ;
break ;
case 0x76 : /* Store Byte, WriteBack, Pre Dec, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
temp = LHS - LSRegRHS ;
if ( StoreByte ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x77 : /* Load Byte, WriteBack, Pre Dec, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
temp = LHS - LSRegRHS ;
if ( LoadByte ( state , instr , temp , LUNSIGNED ) )
LSBase = temp ;
break ;
case 0x78 : /* Store Word, No WriteBack, Pre Inc, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
( void ) StoreWord ( state , instr ,
LHS + LSRegRHS ) ;
break ;
case 0x79 : /* Load Word, No WriteBack, Pre Inc, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
( void ) LoadWord ( state , instr ,
LHS + LSRegRHS ) ;
break ;
case 0x7a : /* Store Word, WriteBack, Pre Inc, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
temp = LHS + LSRegRHS ;
if ( StoreWord ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x7b : /* Load Word, WriteBack, Pre Inc, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
temp = LHS + LSRegRHS ;
if ( LoadWord ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x7c : /* Store Byte, No WriteBack, Pre Inc, Reg. */
if ( BIT ( 4 ) ) {
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# ifdef MODE32
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if ( state - > is_v6
& & handle_v6_insn ( state , instr ) )
break ;
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# endif
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ARMul_UndefInstr ( state , instr ) ;
break ;
}
( void ) StoreByte ( state , instr ,
LHS + LSRegRHS ) ;
break ;
case 0x7d : /* Load Byte, No WriteBack, Pre Inc, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
( void ) LoadByte ( state , instr , LHS + LSRegRHS ,
LUNSIGNED ) ;
break ;
case 0x7e : /* Store Byte, WriteBack, Pre Inc, Reg. */
if ( BIT ( 4 ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
temp = LHS + LSRegRHS ;
if ( StoreByte ( state , instr , temp ) )
LSBase = temp ;
break ;
case 0x7f : /* Load Byte, WriteBack, Pre Inc, Reg. */
if ( BIT ( 4 ) ) {
/* Check for the special breakpoint opcode.
This value should correspond to the value defined
as ARM_BE_BREAKPOINT in gdb / arm / tm - arm . h . */
if ( BITS ( 0 , 19 ) = = 0xfdefe ) {
if ( ! ARMul_OSHandleSWI
( state , SWI_Breakpoint ) )
ARMul_Abort ( state ,
ARMul_SWIV ) ;
}
else
ARMul_UndefInstr ( state ,
instr ) ;
break ;
}
UNDEF_LSRBaseEQOffWb ;
UNDEF_LSRBaseEQDestWb ;
UNDEF_LSRPCBaseWb ;
UNDEF_LSRPCOffWb ;
temp = LHS + LSRegRHS ;
if ( LoadByte ( state , instr , temp , LUNSIGNED ) )
LSBase = temp ;
break ;
/* Multiple Data Transfer Instructions. */
case 0x80 : /* Store, No WriteBack, Post Dec. */
STOREMULT ( instr , LSBase - LSMNumRegs + 4L ,
0L ) ;
break ;
case 0x81 : /* Load, No WriteBack, Post Dec. */
LOADMULT ( instr , LSBase - LSMNumRegs + 4L ,
0L ) ;
break ;
case 0x82 : /* Store, WriteBack, Post Dec. */
temp = LSBase - LSMNumRegs ;
STOREMULT ( instr , temp + 4L , temp ) ;
break ;
case 0x83 : /* Load, WriteBack, Post Dec. */
temp = LSBase - LSMNumRegs ;
LOADMULT ( instr , temp + 4L , temp ) ;
break ;
case 0x84 : /* Store, Flags, No WriteBack, Post Dec. */
STORESMULT ( instr , LSBase - LSMNumRegs + 4L ,
0L ) ;
break ;
case 0x85 : /* Load, Flags, No WriteBack, Post Dec. */
LOADSMULT ( instr , LSBase - LSMNumRegs + 4L ,
0L ) ;
break ;
case 0x86 : /* Store, Flags, WriteBack, Post Dec. */
temp = LSBase - LSMNumRegs ;
STORESMULT ( instr , temp + 4L , temp ) ;
break ;
case 0x87 : /* Load, Flags, WriteBack, Post Dec. */
temp = LSBase - LSMNumRegs ;
LOADSMULT ( instr , temp + 4L , temp ) ;
break ;
case 0x88 : /* Store, No WriteBack, Post Inc. */
STOREMULT ( instr , LSBase , 0L ) ;
break ;
case 0x89 : /* Load, No WriteBack, Post Inc. */
LOADMULT ( instr , LSBase , 0L ) ;
break ;
case 0x8a : /* Store, WriteBack, Post Inc. */
temp = LSBase ;
STOREMULT ( instr , temp , temp + LSMNumRegs ) ;
break ;
case 0x8b : /* Load, WriteBack, Post Inc. */
temp = LSBase ;
LOADMULT ( instr , temp , temp + LSMNumRegs ) ;
break ;
case 0x8c : /* Store, Flags, No WriteBack, Post Inc. */
STORESMULT ( instr , LSBase , 0L ) ;
break ;
case 0x8d : /* Load, Flags, No WriteBack, Post Inc. */
LOADSMULT ( instr , LSBase , 0L ) ;
break ;
case 0x8e : /* Store, Flags, WriteBack, Post Inc. */
temp = LSBase ;
STORESMULT ( instr , temp , temp + LSMNumRegs ) ;
break ;
case 0x8f : /* Load, Flags, WriteBack, Post Inc. */
temp = LSBase ;
LOADSMULT ( instr , temp , temp + LSMNumRegs ) ;
break ;
case 0x90 : /* Store, No WriteBack, Pre Dec. */
STOREMULT ( instr , LSBase - LSMNumRegs , 0L ) ;
break ;
case 0x91 : /* Load, No WriteBack, Pre Dec. */
LOADMULT ( instr , LSBase - LSMNumRegs , 0L ) ;
break ;
case 0x92 : /* Store, WriteBack, Pre Dec. */
temp = LSBase - LSMNumRegs ;
STOREMULT ( instr , temp , temp ) ;
break ;
case 0x93 : /* Load, WriteBack, Pre Dec. */
temp = LSBase - LSMNumRegs ;
LOADMULT ( instr , temp , temp ) ;
break ;
case 0x94 : /* Store, Flags, No WriteBack, Pre Dec. */
STORESMULT ( instr , LSBase - LSMNumRegs , 0L ) ;
break ;
case 0x95 : /* Load, Flags, No WriteBack, Pre Dec. */
LOADSMULT ( instr , LSBase - LSMNumRegs , 0L ) ;
break ;
case 0x96 : /* Store, Flags, WriteBack, Pre Dec. */
temp = LSBase - LSMNumRegs ;
STORESMULT ( instr , temp , temp ) ;
break ;
case 0x97 : /* Load, Flags, WriteBack, Pre Dec. */
temp = LSBase - LSMNumRegs ;
LOADSMULT ( instr , temp , temp ) ;
break ;
case 0x98 : /* Store, No WriteBack, Pre Inc. */
STOREMULT ( instr , LSBase + 4L , 0L ) ;
break ;
case 0x99 : /* Load, No WriteBack, Pre Inc. */
LOADMULT ( instr , LSBase + 4L , 0L ) ;
break ;
case 0x9a : /* Store, WriteBack, Pre Inc. */
temp = LSBase ;
STOREMULT ( instr , temp + 4L ,
temp + LSMNumRegs ) ;
break ;
case 0x9b : /* Load, WriteBack, Pre Inc. */
temp = LSBase ;
LOADMULT ( instr , temp + 4L ,
temp + LSMNumRegs ) ;
break ;
case 0x9c : /* Store, Flags, No WriteBack, Pre Inc. */
STORESMULT ( instr , LSBase + 4L , 0L ) ;
break ;
case 0x9d : /* Load, Flags, No WriteBack, Pre Inc. */
LOADSMULT ( instr , LSBase + 4L , 0L ) ;
break ;
case 0x9e : /* Store, Flags, WriteBack, Pre Inc. */
temp = LSBase ;
STORESMULT ( instr , temp + 4L ,
temp + LSMNumRegs ) ;
break ;
case 0x9f : /* Load, Flags, WriteBack, Pre Inc. */
temp = LSBase ;
LOADSMULT ( instr , temp + 4L ,
temp + LSMNumRegs ) ;
break ;
/* Branch forward. */
case 0xa0 :
case 0xa1 :
case 0xa2 :
case 0xa3 :
case 0xa4 :
case 0xa5 :
case 0xa6 :
case 0xa7 :
state - > Reg [ 15 ] = pc + 8 + POSBRANCH ;
FLUSHPIPE ;
break ;
/* Branch backward. */
case 0xa8 :
case 0xa9 :
case 0xaa :
case 0xab :
case 0xac :
case 0xad :
case 0xae :
case 0xaf :
state - > Reg [ 15 ] = pc + 8 + NEGBRANCH ;
FLUSHPIPE ;
break ;
/* Branch and Link forward. */
case 0xb0 :
case 0xb1 :
case 0xb2 :
case 0xb3 :
case 0xb4 :
case 0xb5 :
case 0xb6 :
case 0xb7 :
/* Put PC into Link. */
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# ifdef MODE32
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state - > Reg [ 14 ] = pc + 4 ;
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# else
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state - > Reg [ 14 ] =
( pc + 4 ) | ECC | ER15INT | EMODE ;
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# endif
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state - > Reg [ 15 ] = pc + 8 + POSBRANCH ;
FLUSHPIPE ;
break ;
/* Branch and Link backward. */
case 0xb8 :
case 0xb9 :
case 0xba :
case 0xbb :
case 0xbc :
case 0xbd :
case 0xbe :
case 0xbf :
/* Put PC into Link. */
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# ifdef MODE32
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state - > Reg [ 14 ] = pc + 4 ;
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# else
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state - > Reg [ 14 ] =
( pc + 4 ) | ECC | ER15INT | EMODE ;
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# endif
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state - > Reg [ 15 ] = pc + 8 + NEGBRANCH ;
FLUSHPIPE ;
break ;
/* Co-Processor Data Transfers. */
case 0xc4 :
if ( state - > is_v5 ) {
/* Reading from R15 is UNPREDICTABLE. */
if ( BITS ( 12 , 15 ) = = 15
| | BITS ( 16 , 19 ) = = 15 )
ARMul_UndefInstr ( state ,
instr ) ;
/* Is access to coprocessor 0 allowed ? */
else if ( ! CP_ACCESS_ALLOWED
( state , CPNum ) )
ARMul_UndefInstr ( state ,
instr ) ;
/* Special treatment for XScale coprocessors. */
else if ( state - > is_XScale ) {
/* Only opcode 0 is supported. */
if ( BITS ( 4 , 7 ) ! = 0x00 )
ARMul_UndefInstr
( state ,
instr ) ;
/* Only coporcessor 0 is supported. */
else if ( CPNum ! = 0x00 )
ARMul_UndefInstr
( state ,
instr ) ;
/* Only accumulator 0 is supported. */
else if ( BITS ( 0 , 3 ) ! = 0x00 )
ARMul_UndefInstr
( state ,
instr ) ;
else {
/* XScale MAR insn. Move two registers into accumulator. */
state - > Accumulator =
state - >
Reg [ BITS
( 12 , 15 ) ] ;
state - > Accumulator + =
( ARMdword )
state - >
Reg [ BITS
( 16 ,
19 ) ] < <
32 ;
}
}
else
{
/* MCRR, ARMv5TE and up */
ARMul_MCRR ( state , instr , DEST , state - > Reg [ LHSReg ] ) ;
break ;
}
}
/* Drop through. */
case 0xc0 : /* Store , No WriteBack , Post Dec. */
ARMul_STC ( state , instr , LHS ) ;
break ;
case 0xc5 :
if ( state - > is_v5 ) {
/* Writes to R15 are UNPREDICATABLE. */
if ( DESTReg = = 15 | | LHSReg = = 15 )
ARMul_UndefInstr ( state ,
instr ) ;
/* Is access to the coprocessor allowed ? */
else if ( ! CP_ACCESS_ALLOWED
( state , CPNum ) )
ARMul_UndefInstr ( state ,
instr ) ;
/* Special handling for XScale coprcoessors. */
else if ( state - > is_XScale ) {
/* Only opcode 0 is supported. */
if ( BITS ( 4 , 7 ) ! = 0x00 )
ARMul_UndefInstr
( state ,
instr ) ;
/* Only coprocessor 0 is supported. */
else if ( CPNum ! = 0x00 )
ARMul_UndefInstr
( state ,
instr ) ;
/* Only accumulator 0 is supported. */
else if ( BITS ( 0 , 3 ) ! = 0x00 )
ARMul_UndefInstr
( state ,
instr ) ;
else {
/* XScale MRA insn. Move accumulator into two registers. */
ARMword t1 =
( state - >
Accumulator
> > 32 ) & 255 ;
if ( t1 & 128 )
t1 - = 256 ;
state - > Reg [ BITS
( 12 , 15 ) ] =
state - >
Accumulator ;
state - > Reg [ BITS
( 16 , 19 ) ] =
t1 ;
break ;
}
}
else
{
/* MRRC, ARMv5TE and up */
ARMul_MRRC ( state , instr , & DEST , & ( state - > Reg [ LHSReg ] ) ) ;
break ;
}
}
/* Drop through. */
case 0xc1 : /* Load , No WriteBack , Post Dec. */
ARMul_LDC ( state , instr , LHS ) ;
break ;
case 0xc2 :
case 0xc6 : /* Store , WriteBack , Post Dec. */
lhs = LHS ;
state - > Base = lhs - LSCOff ;
ARMul_STC ( state , instr , lhs ) ;
break ;
case 0xc3 :
case 0xc7 : /* Load , WriteBack , Post Dec. */
lhs = LHS ;
state - > Base = lhs - LSCOff ;
ARMul_LDC ( state , instr , lhs ) ;
break ;
case 0xc8 :
case 0xcc : /* Store , No WriteBack , Post Inc. */
ARMul_STC ( state , instr , LHS ) ;
break ;
case 0xc9 :
case 0xcd : /* Load , No WriteBack , Post Inc. */
ARMul_LDC ( state , instr , LHS ) ;
break ;
case 0xca :
case 0xce : /* Store , WriteBack , Post Inc. */
lhs = LHS ;
state - > Base = lhs + LSCOff ;
ARMul_STC ( state , instr , LHS ) ;
break ;
case 0xcb :
case 0xcf : /* Load , WriteBack , Post Inc. */
lhs = LHS ;
state - > Base = lhs + LSCOff ;
ARMul_LDC ( state , instr , LHS ) ;
break ;
case 0xd0 :
case 0xd4 : /* Store , No WriteBack , Pre Dec. */
ARMul_STC ( state , instr , LHS - LSCOff ) ;
break ;
case 0xd1 :
case 0xd5 : /* Load , No WriteBack , Pre Dec. */
ARMul_LDC ( state , instr , LHS - LSCOff ) ;
break ;
case 0xd2 :
case 0xd6 : /* Store , WriteBack , Pre Dec. */
lhs = LHS - LSCOff ;
state - > Base = lhs ;
ARMul_STC ( state , instr , lhs ) ;
break ;
case 0xd3 :
case 0xd7 : /* Load , WriteBack , Pre Dec. */
lhs = LHS - LSCOff ;
state - > Base = lhs ;
ARMul_LDC ( state , instr , lhs ) ;
break ;
case 0xd8 :
case 0xdc : /* Store , No WriteBack , Pre Inc. */
ARMul_STC ( state , instr , LHS + LSCOff ) ;
break ;
case 0xd9 :
case 0xdd : /* Load , No WriteBack , Pre Inc. */
ARMul_LDC ( state , instr , LHS + LSCOff ) ;
break ;
case 0xda :
case 0xde : /* Store , WriteBack , Pre Inc. */
lhs = LHS + LSCOff ;
state - > Base = lhs ;
ARMul_STC ( state , instr , lhs ) ;
break ;
case 0xdb :
case 0xdf : /* Load , WriteBack , Pre Inc. */
lhs = LHS + LSCOff ;
state - > Base = lhs ;
ARMul_LDC ( state , instr , lhs ) ;
break ;
/* Co-Processor Register Transfers (MCR) and Data Ops. */
case 0xe2 :
if ( ! CP_ACCESS_ALLOWED ( state , CPNum ) ) {
ARMul_UndefInstr ( state , instr ) ;
break ;
}
if ( state - > is_XScale )
switch ( BITS ( 18 , 19 ) ) {
case 0x0 :
if ( BITS ( 4 , 11 ) = = 1
& & BITS ( 16 , 17 ) = = 0 ) {
/* XScale MIA instruction. Signed multiplication of
two 32 bit values and addition to 40 bit accumulator . */
long long Rm =
state - >
Reg
[ MULLHSReg ] ;
long long Rs =
state - >
Reg
[ MULACCReg ] ;
if ( Rm & ( 1 < < 31 ) )
Rm - = 1ULL < <
32 ;
if ( Rs & ( 1 < < 31 ) )
Rs - = 1ULL < <
32 ;
state - > Accumulator + =
Rm * Rs ;
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
break ;
case 0x2 :
if ( BITS ( 4 , 11 ) = = 1
& & BITS ( 16 , 17 ) = = 0 ) {
/* XScale MIAPH instruction. */
ARMword t1 =
state - >
Reg [ MULLHSReg ]
> > 16 ;
ARMword t2 =
state - >
Reg [ MULACCReg ]
> > 16 ;
ARMword t3 =
state - >
Reg [ MULLHSReg ]
& 0xffff ;
ARMword t4 =
state - >
Reg [ MULACCReg ]
& 0xffff ;
long long t5 ;
if ( t1 & ( 1 < < 15 ) )
t1 - = 1 < < 16 ;
if ( t2 & ( 1 < < 15 ) )
t2 - = 1 < < 16 ;
if ( t3 & ( 1 < < 15 ) )
t3 - = 1 < < 16 ;
if ( t4 & ( 1 < < 15 ) )
t4 - = 1 < < 16 ;
t1 * = t2 ;
t5 = t1 ;
if ( t5 & ( 1 < < 31 ) )
t5 - = 1ULL < <
32 ;
state - > Accumulator + =
t5 ;
t3 * = t4 ;
t5 = t3 ;
if ( t5 & ( 1 < < 31 ) )
t5 - = 1ULL < <
32 ;
state - > Accumulator + =
t5 ;
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
break ;
case 0x3 :
if ( BITS ( 4 , 11 ) = = 1 ) {
/* XScale MIAxy instruction. */
ARMword t1 ;
ARMword t2 ;
long long t5 ;
if ( BIT ( 17 ) )
t1 = state - >
Reg
[ MULLHSReg ]
> > 16 ;
else
t1 = state - >
Reg
[ MULLHSReg ]
&
0xffff ;
if ( BIT ( 16 ) )
t2 = state - >
Reg
[ MULACCReg ]
> > 16 ;
else
t2 = state - >
Reg
[ MULACCReg ]
&
0xffff ;
if ( t1 & ( 1 < < 15 ) )
t1 - = 1 < < 16 ;
if ( t2 & ( 1 < < 15 ) )
t2 - = 1 < < 16 ;
t1 * = t2 ;
t5 = t1 ;
if ( t5 & ( 1 < < 31 ) )
t5 - = 1ULL < <
32 ;
state - > Accumulator + =
t5 ;
_assert_msg_ ( ARM11 , false , " disabled skyeye code 'goto donext' " ) ; //goto donext;
}
break ;
default :
break ;
}
/* Drop through. */
case 0xe0 :
case 0xe4 :
case 0xe6 :
case 0xe8 :
case 0xea :
case 0xec :
case 0xee :
if ( BIT ( 4 ) ) {
/* MCR. */
if ( DESTReg = = 15 ) {
UNDEF_MCRPC ;
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# ifdef MODE32
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ARMul_MCR ( state , instr ,
state - > Reg [ 15 ] +
isize ) ;
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# else
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ARMul_MCR ( state , instr ,
ECC | ER15INT |
EMODE |
( ( state - > Reg [ 15 ] +
isize ) &
R15PCBITS ) ) ;
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# endif
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}
else
ARMul_MCR ( state , instr ,
DEST ) ;
}
else
/* CDP Part 1. */
ARMul_CDP ( state , instr ) ;
break ;
/* Co-Processor Register Transfers (MRC) and Data Ops. */
case 0xe1 :
case 0xe3 :
case 0xe5 :
case 0xe7 :
case 0xe9 :
case 0xeb :
case 0xed :
case 0xef :
if ( BIT ( 4 ) ) {
/* MRC */
temp = ARMul_MRC ( state , instr ) ;
if ( DESTReg = = 15 ) {
ASSIGNN ( ( temp & NBIT ) ! = 0 ) ;
ASSIGNZ ( ( temp & ZBIT ) ! = 0 ) ;
ASSIGNC ( ( temp & CBIT ) ! = 0 ) ;
ASSIGNV ( ( temp & VBIT ) ! = 0 ) ;
}
else
DEST = temp ;
}
else
/* CDP Part 2. */
ARMul_CDP ( state , instr ) ;
break ;
/* SWI instruction. */
case 0xf0 :
case 0xf1 :
case 0xf2 :
case 0xf3 :
case 0xf4 :
case 0xf5 :
case 0xf6 :
case 0xf7 :
case 0xf8 :
case 0xf9 :
case 0xfa :
case 0xfb :
case 0xfc :
case 0xfd :
case 0xfe :
case 0xff :
if ( instr = = ARMul_ABORTWORD
& & state - > AbortAddr = = pc ) {
/* A prefetch abort. */
XScale_set_fsr_far ( state ,
ARMul_CP15_R5_MMU_EXCPT ,
pc ) ;
ARMul_Abort ( state ,
ARMul_PrefetchAbortV ) ;
break ;
}
//sky_pref_t* pref = get_skyeye_pref();
//if(pref->user_mode_sim){
// ARMul_OSHandleSWI (state, BITS (0, 23));
// break;
//}
ARMul_Abort ( state , ARMul_SWIV ) ;
break ;
}
}
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# ifdef MODET
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donext :
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# endif
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state - > pc = pc ;
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#if 0
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/* shenoubang */
instr_sum + + ;
int i , j ;
i = j = 0 ;
if ( instr_sum > = 7388648 ) {
//if (pc == 0xc0008ab4) {
// printf("instr_sum: %d\n", instr_sum);
// start_kernel : 0xc000895c
printf ( " -------------------------------------------------- \n " ) ;
for ( i = 0 ; i < 16 ; i + + ) {
printf ( " [R%02d]:[0x%08x] \t " , i , state - > Reg [ i ] ) ;
if ( ( i % 3 ) = = 2 ) {
printf ( " \n " ) ;
}
}
printf ( " [cpr]:[0x%08x] \t [spr0]:[0x%08x] \n " , state - > Cpsr , state - > Spsr [ 0 ] ) ;
for ( j = 1 ; j < 7 ; j + + ) {
printf ( " [spr%d]:[0x%08x] \t " , j , state - > Spsr [ j ] ) ;
if ( ( j % 4 ) = = 3 ) {
printf ( " \n " ) ;
}
}
printf ( " \n [PC]:[0x%08x] \t [INST]:[0x%08x] \t [COUNT]:[%d] \n " , pc , instr , instr_sum ) ;
printf ( " -------------------------------------------------- \n " ) ;
}
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# endif
#if 0
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fprintf ( state - > state_log , " PC:0x%x \n " , pc ) ;
for ( reg_index = 0 ; reg_index < 16 ; reg_index + + ) {
if ( state - > Reg [ reg_index ] ! = mirror_register_file [ reg_index ] ) {
fprintf ( state - > state_log , " R%d:0x%x \n " , reg_index , state - > Reg [ reg_index ] ) ;
mirror_register_file [ reg_index ] = state - > Reg [ reg_index ] ;
}
}
if ( state - > Cpsr ! = mirror_register_file [ CPSR_REG ] ) {
fprintf ( state - > state_log , " Cpsr:0x%x \n " , state - > Cpsr ) ;
mirror_register_file [ CPSR_REG ] = state - > Cpsr ;
}
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if ( state - > RegBank [ SVCBANK ] [ 13 ] ! = mirror_register_file [ R13_SVC ] ) {
fprintf ( state - > state_log , " R13_SVC:0x%x \n " , state - > RegBank [ SVCBANK ] [ 13 ] ) ;
mirror_register_file [ R13_SVC ] = state - > RegBank [ SVCBANK ] [ 13 ] ;
}
if ( state - > RegBank [ SVCBANK ] [ 14 ] ! = mirror_register_file [ R14_SVC ] ) {
fprintf ( state - > state_log , " R14_SVC:0x%x \n " , state - > RegBank [ SVCBANK ] [ 14 ] ) ;
mirror_register_file [ R14_SVC ] = state - > RegBank [ SVCBANK ] [ 14 ] ;
}
if ( state - > RegBank [ ABORTBANK ] [ 13 ] ! = mirror_register_file [ R13_ABORT ] ) {
fprintf ( state - > state_log , " R13_ABORT:0x%x \n " , state - > RegBank [ ABORTBANK ] [ 13 ] ) ;
mirror_register_file [ R13_ABORT ] = state - > RegBank [ ABORTBANK ] [ 13 ] ;
}
if ( state - > RegBank [ ABORTBANK ] [ 14 ] ! = mirror_register_file [ R14_ABORT ] ) {
fprintf ( state - > state_log , " R14_ABORT:0x%x \n " , state - > RegBank [ ABORTBANK ] [ 14 ] ) ;
mirror_register_file [ R14_ABORT ] = state - > RegBank [ ABORTBANK ] [ 14 ] ;
}
if ( state - > RegBank [ UNDEFBANK ] [ 13 ] ! = mirror_register_file [ R13_UNDEF ] ) {
fprintf ( state - > state_log , " R13_UNDEF:0x%x \n " , state - > RegBank [ UNDEFBANK ] [ 13 ] ) ;
mirror_register_file [ R13_UNDEF ] = state - > RegBank [ UNDEFBANK ] [ 13 ] ;
}
if ( state - > RegBank [ UNDEFBANK ] [ 14 ] ! = mirror_register_file [ R14_UNDEF ] ) {
fprintf ( state - > state_log , " R14_UNDEF:0x%x \n " , state - > RegBank [ UNDEFBANK ] [ 14 ] ) ;
mirror_register_file [ R14_UNDEF ] = state - > RegBank [ UNDEFBANK ] [ 14 ] ;
}
if ( state - > RegBank [ IRQBANK ] [ 13 ] ! = mirror_register_file [ R13_IRQ ] ) {
fprintf ( state - > state_log , " R13_IRQ:0x%x \n " , state - > RegBank [ IRQBANK ] [ 13 ] ) ;
mirror_register_file [ R13_IRQ ] = state - > RegBank [ IRQBANK ] [ 13 ] ;
}
if ( state - > RegBank [ IRQBANK ] [ 14 ] ! = mirror_register_file [ R14_IRQ ] ) {
fprintf ( state - > state_log , " R14_IRQ:0x%x \n " , state - > RegBank [ IRQBANK ] [ 14 ] ) ;
mirror_register_file [ R14_IRQ ] = state - > RegBank [ IRQBANK ] [ 14 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 8 ] ! = mirror_register_file [ R8_FIRQ ] ) {
fprintf ( state - > state_log , " R8_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 8 ] ) ;
mirror_register_file [ R8_FIRQ ] = state - > RegBank [ FIQBANK ] [ 8 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 9 ] ! = mirror_register_file [ R9_FIRQ ] ) {
fprintf ( state - > state_log , " R9_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 9 ] ) ;
mirror_register_file [ R9_FIRQ ] = state - > RegBank [ FIQBANK ] [ 9 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 10 ] ! = mirror_register_file [ R10_FIRQ ] ) {
fprintf ( state - > state_log , " R10_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 10 ] ) ;
mirror_register_file [ R10_FIRQ ] = state - > RegBank [ FIQBANK ] [ 10 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 11 ] ! = mirror_register_file [ R11_FIRQ ] ) {
fprintf ( state - > state_log , " R11_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 11 ] ) ;
mirror_register_file [ R11_FIRQ ] = state - > RegBank [ FIQBANK ] [ 11 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 12 ] ! = mirror_register_file [ R12_FIRQ ] ) {
fprintf ( state - > state_log , " R12_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 12 ] ) ;
mirror_register_file [ R12_FIRQ ] = state - > RegBank [ FIQBANK ] [ 12 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 13 ] ! = mirror_register_file [ R13_FIRQ ] ) {
fprintf ( state - > state_log , " R13_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 13 ] ) ;
mirror_register_file [ R13_FIRQ ] = state - > RegBank [ FIQBANK ] [ 13 ] ;
}
if ( state - > RegBank [ FIQBANK ] [ 14 ] ! = mirror_register_file [ R14_FIRQ ] ) {
fprintf ( state - > state_log , " R14_FIRQ:0x%x \n " , state - > RegBank [ FIQBANK ] [ 14 ] ) ;
mirror_register_file [ R14_FIRQ ] = state - > RegBank [ FIQBANK ] [ 14 ] ;
}
if ( state - > Spsr [ SVCBANK ] ! = mirror_register_file [ SPSR_SVC ] ) {
fprintf ( state - > state_log , " SPSR_SVC:0x%x \n " , state - > Spsr [ SVCBANK ] ) ;
mirror_register_file [ SPSR_SVC ] = state - > RegBank [ SVCBANK ] ;
}
if ( state - > Spsr [ ABORTBANK ] ! = mirror_register_file [ SPSR_ABORT ] ) {
fprintf ( state - > state_log , " SPSR_ABORT:0x%x \n " , state - > Spsr [ ABORTBANK ] ) ;
mirror_register_file [ SPSR_ABORT ] = state - > RegBank [ ABORTBANK ] ;
}
if ( state - > Spsr [ UNDEFBANK ] ! = mirror_register_file [ SPSR_UNDEF ] ) {
fprintf ( state - > state_log , " SPSR_UNDEF:0x%x \n " , state - > Spsr [ UNDEFBANK ] ) ;
mirror_register_file [ SPSR_UNDEF ] = state - > RegBank [ UNDEFBANK ] ;
}
if ( state - > Spsr [ IRQBANK ] ! = mirror_register_file [ SPSR_IRQ ] ) {
fprintf ( state - > state_log , " SPSR_IRQ:0x%x \n " , state - > Spsr [ IRQBANK ] ) ;
mirror_register_file [ SPSR_IRQ ] = state - > RegBank [ IRQBANK ] ;
}
if ( state - > Spsr [ FIQBANK ] ! = mirror_register_file [ SPSR_FIRQ ] ) {
fprintf ( state - > state_log , " SPSR_FIRQ:0x%x \n " , state - > Spsr [ FIQBANK ] ) ;
mirror_register_file [ SPSR_FIRQ ] = state - > RegBank [ FIQBANK ] ;
}
# endif
# ifdef NEED_UI_LOOP_HOOK
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if ( ui_loop_hook ! = NULL & & ui_loop_hook_counter - - < 0 ) {
ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL ;
ui_loop_hook ( 0 ) ;
}
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# endif /* NEED_UI_LOOP_HOOK */
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/*added energy_prof statement by ksh in 2004-11-26 */
//chy 2005-07-28 for standalone
//ARMul_do_energy(state,instr,pc);
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//teawater add for record reg value to ./reg.txt 2005.07.10---------------------
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if ( state - > tea_break_ok & & pc = = state - > tea_break_addr ) {
ARMul_Debug ( state , 0 , 0 ) ;
state - > tea_break_ok = 0 ;
}
else {
state - > tea_break_ok = 1 ;
}
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//AJ2D--------------------------------------------------------------------------
//chy 2006-04-14 for ctrl-c debug
#if 0
if ( debugmode ) {
if ( instr ! = ARMul_ABORTWORD ) {
remote_interrupt_test_time + + ;
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//chy 2006-04-14 2000 should be changed in skyeye_conf ???!!!
if ( remote_interrupt_test_time > = 2000 ) {
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remote_interrupt_test_time = 0 ;
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if ( remote_interrupt ( ) ) {
//for test
//printf("SKYEYE: ICE_debug recv Ctrl_C\n");
state - > EndCondition = 0 ;
state - > Emulate = STOP ;
}
}
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}
}
# endif
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/* jump out every time */
//state->EndCondition = 0;
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//state->Emulate = STOP;
//chy 2006-04-12 for ICE debug
TEST_EMULATE :
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if ( state - > Emulate = = ONCE )
state - > Emulate = STOP ;
//chy: 2003-08-23: should not use CHANGEMODE !!!!
/* If we have changed mode, allow the PC to advance before stopping. */
// else if (state->Emulate == CHANGEMODE)
// continue;
else if ( state - > Emulate ! = RUN )
break ;
}
while ( ! state - > stop_simulator ) ;
state - > decoded = decoded ;
state - > loaded = loaded ;
state - > pc = pc ;
//chy 2006-04-12, for ICE debug
state - > decoded_addr = decoded_addr ;
state - > loaded_addr = loaded_addr ;
return pc ;
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}
//teawater add for arm2x86 2005.02.17-------------------------------------------
/*ywc 2005-04-01*/
//#include "tb.h"
//#include "arm2x86_self.h"
static volatile void ( * gen_func ) ( void ) ;
//static volatile ARMul_State *tmp_st;
//static volatile ARMul_State *save_st;
static volatile uint32_t tmp_st ;
static volatile uint32_t save_st ;
static volatile uint32_t save_T0 ;
static volatile uint32_t save_T1 ;
static volatile uint32_t save_T2 ;
# ifdef MODE32
# ifdef DBCT
//teawater change for debug function 2005.07.09---------------------------------
ARMword
ARMul_Emulate32_dbct ( ARMul_State * state )
{
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static int init = 0 ;
static FILE * fd ;
/*if (!init) {
fd = fopen ( " ./pc.txt " , " w " ) ;
if ( ! fd ) {
exit ( - 1 ) ;
}
init = 1 ;
} */
state - > Reg [ 15 ] + = INSN_SIZE ;
do {
/*if (skyeye_config.log.logon>=1) {
if ( state - > NumInstrs > = skyeye_config . log . start & & state - > NumInstrs < = skyeye_config . log . end ) {
static int mybegin = 0 ;
static int myinstrnum = 0 ;
if ( mybegin = = 0 ) mybegin = 1 ;
if ( mybegin = = 1 ) {
state - > Reg [ 15 ] - = INSN_SIZE ;
if ( skyeye_config . log . logon > = 1 ) fprintf ( skyeye_logfd , " N %llx :p %x,i %x, " , state - > NumInstrs , ( state - > Reg [ 15 ] - INSN_SIZE ) , instr ) ;
if ( skyeye_config . log . logon > = 2 ) SKYEYE_OUTREGS ( skyeye_logfd ) ;
if ( skyeye_config . log . logon > = 3 ) SKYEYE_OUTMOREREGS ( skyeye_logfd ) ;
fprintf ( skyeye_logfd , " \n " ) ;
if ( skyeye_config . log . length > 0 ) {
myinstrnum + + ;
if ( myinstrnum > = skyeye_config . log . length ) {
myinstrnum = 0 ;
fflush ( skyeye_logfd ) ;
fseek ( skyeye_logfd , 0L , SEEK_SET ) ;
}
}
state - > Reg [ 15 ] + = INSN_SIZE ;
}
}
} */
state - > trap = 0 ;
gen_func =
( void * ) tb_find ( state , state - > Reg [ 15 ] - INSN_SIZE ) ;
if ( ! gen_func ) {
//fprintf(stderr, "SKYEYE: tb_find: Error in find the translate block.\n");
//exit(-1);
//TRAP_INSN_ABORT
//TEA_OUT(printf("\n------------\npc:%x\n", state->Reg[15] - INSN_SIZE));
//TEA_OUT(printf("TRAP_INSN_ABORT\n"));
2013-09-17 23:03:54 -04:00
//teawater add for xscale(arm v5) 2005.09.01------------------------------------
2014-04-01 18:18:52 -04:00
/*XScale_set_fsr_far(state, ARMul_CP15_R5_MMU_EXCPT, state->Reg[15] - INSN_SIZE);
state - > Reg [ 15 ] + = INSN_SIZE ;
ARMul_Abort ( state , ARMul_PrefetchAbortV ) ;
state - > Reg [ 15 ] + = INSN_SIZE ;
goto next ; */
state - > trap = TRAP_INSN_ABORT ;
goto check ;
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//AJ2D--------------------------------------------------------------------------
2014-04-01 18:18:52 -04:00
}
save_st = ( uint32_t ) st ;
save_T0 = T0 ;
save_T1 = T1 ;
save_T2 = T2 ;
tmp_st = ( uint32_t ) state ;
wmb ( ) ;
st = ( ARMul_State * ) tmp_st ;
gen_func ( ) ;
st = ( ARMul_State * ) save_st ;
T0 = save_T0 ;
T1 = save_T1 ;
T2 = save_T2 ;
/*if (state->trap != TRAP_OUT) {
state - > tea_break_ok = 1 ;
}
if ( state - > trap < = TRAP_SET_R15 ) {
goto next ;
} */
//TEA_OUT(printf("\n------------\npc:%x\n", state->Reg[15] - INSN_SIZE));
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//teawater add check thumb 2005.07.21-------------------------------------------
2014-04-01 18:18:52 -04:00
/*if (TFLAG) {
state - > Reg [ 15 ] - = 2 ;
return ( state - > Reg [ 15 ] ) ;
} */
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//AJ2D--------------------------------------------------------------------------
//teawater add for xscale(arm v5) 2005.09.01------------------------------------
2014-04-01 18:18:52 -04:00
check :
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//AJ2D--------------------------------------------------------------------------
2014-04-01 18:18:52 -04:00
switch ( state - > trap ) {
case TRAP_RESET :
{
//TEA_OUT(printf("TRAP_RESET\n"));
ARMul_Abort ( state , ARMul_ResetV ) ;
state - > Reg [ 15 ] + = INSN_SIZE ;
}
break ;
case TRAP_UNPREDICTABLE :
{
ARMul_Debug ( state , 0 , 0 ) ;
}
break ;
case TRAP_INSN_UNDEF :
{
//TEA_OUT(printf("TRAP_INSN_UNDEF\n"));
state - > Reg [ 15 ] + = INSN_SIZE ;
ARMul_UndefInstr ( state , 0 ) ;
state - > Reg [ 15 ] + = INSN_SIZE ;
}
break ;
case TRAP_SWI :
{
//TEA_OUT(printf("TRAP_SWI\n"));
state - > Reg [ 15 ] + = INSN_SIZE ;
ARMul_Abort ( state , ARMul_SWIV ) ;
state - > Reg [ 15 ] + = INSN_SIZE ;
}
break ;
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//teawater add for xscale(arm v5) 2005.09.01------------------------------------
2014-04-01 18:18:52 -04:00
case TRAP_INSN_ABORT :
{
XScale_set_fsr_far ( state ,
ARMul_CP15_R5_MMU_EXCPT ,
state - > Reg [ 15 ] -
INSN_SIZE ) ;
state - > Reg [ 15 ] + = INSN_SIZE ;
ARMul_Abort ( state , ARMul_PrefetchAbortV ) ;
state - > Reg [ 15 ] + = INSN_SIZE ;
}
break ;
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//AJ2D--------------------------------------------------------------------------
2014-04-01 18:18:52 -04:00
case TRAP_DATA_ABORT :
{
//TEA_OUT(printf("TRAP_DATA_ABORT\n"));
state - > Reg [ 15 ] + = INSN_SIZE ;
ARMul_Abort ( state , ARMul_DataAbortV ) ;
state - > Reg [ 15 ] + = INSN_SIZE ;
}
break ;
case TRAP_IRQ :
{
//TEA_OUT(printf("TRAP_IRQ\n"));
state - > Reg [ 15 ] + = INSN_SIZE ;
ARMul_Abort ( state , ARMul_IRQV ) ;
state - > Reg [ 15 ] + = INSN_SIZE ;
}
break ;
case TRAP_FIQ :
{
//TEA_OUT(printf("TRAP_FIQ\n"));
state - > Reg [ 15 ] + = INSN_SIZE ;
ARMul_Abort ( state , ARMul_FIQV ) ;
state - > Reg [ 15 ] + = INSN_SIZE ;
}
break ;
case TRAP_SETS_R15 :
{
//TEA_OUT(printf("TRAP_SETS_R15\n"));
/*if (state->Bank > 0) {
state - > Cpsr = state - > Spsr [ state - > Bank ] ;
ARMul_CPSRAltered ( state ) ;
} */
WriteSR15 ( state , state - > Reg [ 15 ] ) ;
}
break ;
case TRAP_SET_CPSR :
{
//TEA_OUT(printf("TRAP_SET_CPSR\n"));
//chy 2006-02-15 USERBANK=SYSTEMBANK=0
//chy 2006-02-16 should use Mode to test
//if (state->Bank > 0) {
if ( state - > Mode ! = USER26MODE & & state - > Mode ! = USER32MODE ) {
ARMul_CPSRAltered ( state ) ;
}
state - > Reg [ 15 ] + = INSN_SIZE ;
}
break ;
case TRAP_OUT :
{
//TEA_OUT(printf("TRAP_OUT\n"));
goto out ;
}
break ;
case TRAP_BREAKPOINT :
{
//TEA_OUT(printf("TRAP_BREAKPOINT\n"));
state - > Reg [ 15 ] - = INSN_SIZE ;
if ( ! ARMul_OSHandleSWI
( state , SWI_Breakpoint ) ) {
ARMul_Abort ( state , ARMul_SWIV ) ;
}
state - > Reg [ 15 ] + = INSN_SIZE ;
}
break ;
}
next :
if ( state - > Emulate = = ONCE ) {
state - > Emulate = STOP ;
break ;
}
else if ( state - > Emulate ! = RUN ) {
break ;
}
}
while ( ! state - > stop_simulator ) ;
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out :
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state - > Reg [ 15 ] - = INSN_SIZE ;
return ( state - > Reg [ 15 ] ) ;
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}
# endif
//AJ2D--------------------------------------------------------------------------
# endif
//AJ2D--------------------------------------------------------------------------
/* This routine evaluates most Data Processing register RHS's with the S
bit clear . It is intended to be called from the macro DPRegRHS , which
filters the common case of an unshifted register with in line code . */
static ARMword
GetDPRegRHS ( ARMul_State * state , ARMword instr )
{
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ARMword shamt , base ;
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2014-04-01 18:18:52 -04:00
base = RHSReg ;
if ( BIT ( 4 ) ) {
/* Shift amount in a register. */
UNDEF_Shift ;
INCPC ;
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# ifndef MODE32
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if ( base = = 15 )
base = ECC | ER15INT | R15PC | EMODE ;
else
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# endif
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base = state - > Reg [ base ] ;
ARMul_Icycles ( state , 1 , 0L ) ;
shamt = state - > Reg [ BITS ( 8 , 11 ) ] & 0xff ;
switch ( ( int ) BITS ( 5 , 6 ) ) {
case LSL :
if ( shamt = = 0 )
return ( base ) ;
else if ( shamt > = 32 )
return ( 0 ) ;
else
return ( base < < shamt ) ;
case LSR :
if ( shamt = = 0 )
return ( base ) ;
else if ( shamt > = 32 )
return ( 0 ) ;
else
return ( base > > shamt ) ;
case ASR :
if ( shamt = = 0 )
return ( base ) ;
else if ( shamt > = 32 )
return ( ( ARMword ) ( ( int ) base > > 31L ) ) ;
else
return ( ( ARMword )
( ( int ) base > > ( int ) shamt ) ) ;
case ROR :
shamt & = 0x1f ;
if ( shamt = = 0 )
return ( base ) ;
else
return ( ( base < < ( 32 - shamt ) ) |
( base > > shamt ) ) ;
}
}
else {
/* Shift amount is a constant. */
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# ifndef MODE32
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if ( base = = 15 )
base = ECC | ER15INT | R15PC | EMODE ;
else
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# endif
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base = state - > Reg [ base ] ;
shamt = BITS ( 7 , 11 ) ;
switch ( ( int ) BITS ( 5 , 6 ) ) {
case LSL :
return ( base < < shamt ) ;
case LSR :
if ( shamt = = 0 )
return ( 0 ) ;
else
return ( base > > shamt ) ;
case ASR :
if ( shamt = = 0 )
return ( ( ARMword ) ( ( int ) base > > 31L ) ) ;
else
return ( ( ARMword )
( ( int ) base > > ( int ) shamt ) ) ;
case ROR :
if ( shamt = = 0 )
/* It's an RRX. */
return ( ( base > > 1 ) | ( CFLAG < < 31 ) ) ;
else
return ( ( base < < ( 32 - shamt ) ) |
( base > > shamt ) ) ;
}
}
return 0 ;
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}
/* This routine evaluates most Logical Data Processing register RHS's
with the S bit set . It is intended to be called from the macro
DPSRegRHS , which filters the common case of an unshifted register
with in line code . */
static ARMword
GetDPSRegRHS ( ARMul_State * state , ARMword instr )
{
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ARMword shamt , base ;
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2014-04-01 18:18:52 -04:00
base = RHSReg ;
if ( BIT ( 4 ) ) {
/* Shift amount in a register. */
UNDEF_Shift ;
INCPC ;
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# ifndef MODE32
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if ( base = = 15 )
base = ECC | ER15INT | R15PC | EMODE ;
else
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# endif
2014-04-01 18:18:52 -04:00
base = state - > Reg [ base ] ;
ARMul_Icycles ( state , 1 , 0L ) ;
shamt = state - > Reg [ BITS ( 8 , 11 ) ] & 0xff ;
switch ( ( int ) BITS ( 5 , 6 ) ) {
case LSL :
if ( shamt = = 0 )
return ( base ) ;
else if ( shamt = = 32 ) {
ASSIGNC ( base & 1 ) ;
return ( 0 ) ;
}
else if ( shamt > 32 ) {
CLEARC ;
return ( 0 ) ;
}
else {
ASSIGNC ( ( base > > ( 32 - shamt ) ) & 1 ) ;
return ( base < < shamt ) ;
}
case LSR :
if ( shamt = = 0 )
return ( base ) ;
else if ( shamt = = 32 ) {
ASSIGNC ( base > > 31 ) ;
return ( 0 ) ;
}
else if ( shamt > 32 ) {
CLEARC ;
return ( 0 ) ;
}
else {
ASSIGNC ( ( base > > ( shamt - 1 ) ) & 1 ) ;
return ( base > > shamt ) ;
}
case ASR :
if ( shamt = = 0 )
return ( base ) ;
else if ( shamt > = 32 ) {
ASSIGNC ( base > > 31L ) ;
return ( ( ARMword ) ( ( int ) base > > 31L ) ) ;
}
else {
ASSIGNC ( ( ARMword )
( ( int ) base > >
( int ) ( shamt - 1 ) ) & 1 ) ;
return ( ( ARMword )
( ( int ) base > > ( int ) shamt ) ) ;
}
case ROR :
if ( shamt = = 0 )
return ( base ) ;
shamt & = 0x1f ;
if ( shamt = = 0 ) {
ASSIGNC ( base > > 31 ) ;
return ( base ) ;
}
else {
ASSIGNC ( ( base > > ( shamt - 1 ) ) & 1 ) ;
return ( ( base < < ( 32 - shamt ) ) |
( base > > shamt ) ) ;
}
}
}
else {
/* Shift amount is a constant. */
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# ifndef MODE32
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if ( base = = 15 )
base = ECC | ER15INT | R15PC | EMODE ;
else
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
base = state - > Reg [ base ] ;
shamt = BITS ( 7 , 11 ) ;
switch ( ( int ) BITS ( 5 , 6 ) ) {
case LSL :
ASSIGNC ( ( base > > ( 32 - shamt ) ) & 1 ) ;
return ( base < < shamt ) ;
case LSR :
if ( shamt = = 0 ) {
ASSIGNC ( base > > 31 ) ;
return ( 0 ) ;
}
else {
ASSIGNC ( ( base > > ( shamt - 1 ) ) & 1 ) ;
return ( base > > shamt ) ;
}
case ASR :
if ( shamt = = 0 ) {
ASSIGNC ( base > > 31L ) ;
return ( ( ARMword ) ( ( int ) base > > 31L ) ) ;
}
else {
ASSIGNC ( ( ARMword )
( ( int ) base > >
( int ) ( shamt - 1 ) ) & 1 ) ;
return ( ( ARMword )
( ( int ) base > > ( int ) shamt ) ) ;
}
case ROR :
if ( shamt = = 0 ) {
/* It's an RRX. */
shamt = CFLAG ;
ASSIGNC ( base & 1 ) ;
return ( ( base > > 1 ) | ( shamt < < 31 ) ) ;
}
else {
ASSIGNC ( ( base > > ( shamt - 1 ) ) & 1 ) ;
return ( ( base < < ( 32 - shamt ) ) |
( base > > shamt ) ) ;
}
}
}
return 0 ;
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}
/* This routine handles writes to register 15 when the S bit is not set. */
static void
WriteR15 ( ARMul_State * state , ARMword src )
{
2014-04-01 18:18:52 -04:00
/* The ARM documentation states that the two least significant bits
are discarded when setting PC , except in the cases handled by
WriteR15Branch ( ) below . It ' s probably an oversight : in THUMB
mode , the second least significant bit should probably not be
discarded . */
2013-09-17 23:03:54 -04:00
# ifdef MODET
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if ( TFLAG )
src & = 0xfffffffe ;
else
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
src & = 0xfffffffc ;
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# ifdef MODE32
2014-04-01 18:18:52 -04:00
state - > Reg [ 15 ] = src & PCBITS ;
2013-09-17 23:03:54 -04:00
# else
2014-04-01 18:18:52 -04:00
state - > Reg [ 15 ] = ( src & R15PCBITS ) | ECC | ER15INT | EMODE ;
ARMul_R15Altered ( state ) ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
FLUSHPIPE ;
2013-09-17 23:03:54 -04:00
}
/* This routine handles writes to register 15 when the S bit is set. */
static void
WriteSR15 ( ARMul_State * state , ARMword src )
{
# ifdef MODE32
2014-04-01 18:18:52 -04:00
if ( state - > Bank > 0 ) {
state - > Cpsr = state - > Spsr [ state - > Bank ] ;
ARMul_CPSRAltered ( state ) ;
}
2013-09-17 23:03:54 -04:00
# ifdef MODET
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if ( TFLAG )
src & = 0xfffffffe ;
else
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
src & = 0xfffffffc ;
state - > Reg [ 15 ] = src & PCBITS ;
2013-09-17 23:03:54 -04:00
# else
# ifdef MODET
2014-04-01 18:18:52 -04:00
if ( TFLAG )
/* ARMul_R15Altered would have to support it. */
abort ( ) ;
else
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
src & = 0xfffffffc ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
if ( state - > Bank = = USERBANK )
state - > Reg [ 15 ] =
( src & ( CCBITS | R15PCBITS ) ) | ER15INT | EMODE ;
else
state - > Reg [ 15 ] = src ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
ARMul_R15Altered ( state ) ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
FLUSHPIPE ;
2013-09-17 23:03:54 -04:00
}
/* In machines capable of running in Thumb mode, BX, BLX, LDR and LDM
will switch to Thumb mode if the least significant bit is set . */
static void
WriteR15Branch ( ARMul_State * state , ARMword src )
{
# ifdef MODET
2014-04-01 18:18:52 -04:00
if ( src & 1 ) {
/* Thumb bit. */
SETT ;
state - > Reg [ 15 ] = src & 0xfffffffe ;
}
else {
CLEART ;
state - > Reg [ 15 ] = src & 0xfffffffc ;
}
state - > Cpsr = ARMul_GetCPSR ( state ) ;
FLUSHPIPE ;
2013-09-17 23:03:54 -04:00
# else
2014-04-01 18:18:52 -04:00
WriteR15 ( state , src ) ;
2013-09-17 23:03:54 -04:00
# endif
}
/* This routine evaluates most Load and Store register RHS's. It is
intended to be called from the macro LSRegRHS , which filters the
common case of an unshifted register with in line code . */
static ARMword
GetLSRegRHS ( ARMul_State * state , ARMword instr )
{
2014-04-01 18:18:52 -04:00
ARMword shamt , base ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
base = RHSReg ;
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# ifndef MODE32
2014-04-01 18:18:52 -04:00
if ( base = = 15 )
/* Now forbidden, but ... */
base = ECC | ER15INT | R15PC | EMODE ;
else
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
base = state - > Reg [ base ] ;
shamt = BITS ( 7 , 11 ) ;
switch ( ( int ) BITS ( 5 , 6 ) ) {
case LSL :
return ( base < < shamt ) ;
case LSR :
if ( shamt = = 0 )
return ( 0 ) ;
else
return ( base > > shamt ) ;
case ASR :
if ( shamt = = 0 )
return ( ( ARMword ) ( ( int ) base > > 31L ) ) ;
else
return ( ( ARMword ) ( ( int ) base > > ( int ) shamt ) ) ;
case ROR :
if ( shamt = = 0 )
/* It's an RRX. */
return ( ( base > > 1 ) | ( CFLAG < < 31 ) ) ;
else
return ( ( base < < ( 32 - shamt ) ) | ( base > > shamt ) ) ;
default :
break ;
}
return 0 ;
2013-09-17 23:03:54 -04:00
}
/* This routine evaluates the ARM7T halfword and signed transfer RHS's. */
static ARMword
GetLS7RHS ( ARMul_State * state , ARMword instr )
{
2014-04-01 18:18:52 -04:00
if ( BIT ( 22 ) = = 0 ) {
/* Register. */
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# ifndef MODE32
2014-04-01 18:18:52 -04:00
if ( RHSReg = = 15 )
/* Now forbidden, but ... */
return ECC | ER15INT | R15PC | EMODE ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
return state - > Reg [ RHSReg ] ;
}
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
/* Immediate. */
return BITS ( 0 , 3 ) | ( BITS ( 8 , 11 ) < < 4 ) ;
2013-09-17 23:03:54 -04:00
}
/* This function does the work of loading a word for a LDR instruction. */
# define MEM_LOAD_LOG(description) if (skyeye_config.log.memlogon >= 1) { \
2014-04-01 18:18:52 -04:00
fprintf ( skyeye_logfd , \
" m LOAD %s: N %llx :p %x :i %x :a %x :d %x \n " , \
description , state - > NumInstrs , state - > pc , instr , \
address , dest ) ; \
}
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# define MEM_STORE_LOG(description) if (skyeye_config.log.memlogon >= 1) { \
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fprintf ( skyeye_logfd , \
" m STORE %s: N %llx :p %x :i %x :a %x :d %x \n " , \
description , state - > NumInstrs , state - > pc , instr , \
address , DEST ) ; \
}
2013-09-17 23:03:54 -04:00
static unsigned
LoadWord ( ARMul_State * state , ARMword instr , ARMword address )
{
2014-04-01 18:18:52 -04:00
ARMword dest ;
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2014-04-01 18:18:52 -04:00
BUSUSEDINCPCS ;
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# ifndef MODE32
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if ( ADDREXCEPT ( address ) )
INTERNALABORT ( address ) ;
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# endif
2014-04-01 18:18:52 -04:00
dest = ARMul_LoadWordN ( state , address ) ;
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2014-04-01 18:18:52 -04:00
if ( state - > Aborted ) {
TAKEABORT ;
return state - > lateabtSig ;
}
if ( address & 3 )
dest = ARMul_Align ( state , address , dest ) ;
WRITEDESTB ( dest ) ;
ARMul_Icycles ( state , 1 , 0L ) ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
//MEM_LOAD_LOG("WORD");
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
return ( DESTReg ! = LHSReg ) ;
2013-09-17 23:03:54 -04:00
}
# ifdef MODET
/* This function does the work of loading a halfword. */
static unsigned
LoadHalfWord ( ARMul_State * state , ARMword instr , ARMword address ,
2014-04-01 18:18:52 -04:00
int signextend )
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{
2014-04-01 18:18:52 -04:00
ARMword dest ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
BUSUSEDINCPCS ;
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# ifndef MODE32
2014-04-01 18:18:52 -04:00
if ( ADDREXCEPT ( address ) )
INTERNALABORT ( address ) ;
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# endif
2014-04-01 18:18:52 -04:00
dest = ARMul_LoadHalfWord ( state , address ) ;
if ( state - > Aborted ) {
TAKEABORT ;
return state - > lateabtSig ;
}
UNDEF_LSRBPC ;
if ( signextend )
if ( dest & 1 < < ( 16 - 1 ) )
dest = ( dest & ( ( 1 < < 16 ) - 1 ) ) - ( 1 < < 16 ) ;
WRITEDEST ( dest ) ;
ARMul_Icycles ( state , 1 , 0L ) ;
//MEM_LOAD_LOG("HALFWORD");
return ( DESTReg ! = LHSReg ) ;
2013-09-17 23:03:54 -04:00
}
# endif /* MODET */
/* This function does the work of loading a byte for a LDRB instruction. */
static unsigned
LoadByte ( ARMul_State * state , ARMword instr , ARMword address , int signextend )
{
2014-04-01 18:18:52 -04:00
ARMword dest ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
BUSUSEDINCPCS ;
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# ifndef MODE32
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if ( ADDREXCEPT ( address ) )
INTERNALABORT ( address ) ;
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# endif
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dest = ARMul_LoadByte ( state , address ) ;
if ( state - > Aborted ) {
TAKEABORT ;
return state - > lateabtSig ;
}
UNDEF_LSRBPC ;
if ( signextend )
if ( dest & 1 < < ( 8 - 1 ) )
dest = ( dest & ( ( 1 < < 8 ) - 1 ) ) - ( 1 < < 8 ) ;
WRITEDEST ( dest ) ;
ARMul_Icycles ( state , 1 , 0L ) ;
//MEM_LOAD_LOG("BYTE");
return ( DESTReg ! = LHSReg ) ;
2013-09-17 23:03:54 -04:00
}
/* This function does the work of loading two words for a LDRD instruction. */
static void
Handle_Load_Double ( ARMul_State * state , ARMword instr )
{
2014-04-01 18:18:52 -04:00
ARMword dest_reg ;
ARMword addr_reg ;
ARMword write_back = BIT ( 21 ) ;
ARMword immediate = BIT ( 22 ) ;
ARMword add_to_base = BIT ( 23 ) ;
ARMword pre_indexed = BIT ( 24 ) ;
ARMword offset ;
ARMword addr ;
ARMword sum ;
ARMword base ;
ARMword value1 ;
ARMword value2 ;
BUSUSEDINCPCS ;
/* If the writeback bit is set, the pre-index bit must be clear. */
if ( write_back & & ! pre_indexed ) {
ARMul_UndefInstr ( state , instr ) ;
return ;
}
/* Extract the base address register. */
addr_reg = LHSReg ;
/* Extract the destination register and check it. */
dest_reg = DESTReg ;
/* Destination register must be even. */
if ( ( dest_reg & 1 )
/* Destination register cannot be LR. */
| | ( dest_reg = = 14 ) ) {
ARMul_UndefInstr ( state , instr ) ;
return ;
}
/* Compute the base address. */
base = state - > Reg [ addr_reg ] ;
/* Compute the offset. */
offset = immediate ? ( ( BITS ( 8 , 11 ) < < 4 ) | BITS ( 0 , 3 ) ) : state - >
Reg [ RHSReg ] ;
/* Compute the sum of the two. */
if ( add_to_base )
sum = base + offset ;
else
sum = base - offset ;
/* If this is a pre-indexed mode use the sum. */
if ( pre_indexed )
addr = sum ;
else
addr = base ;
/* The address must be aligned on a 8 byte boundary. */
if ( addr & 0x7 ) {
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# ifdef ABORTS
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ARMul_DATAABORT ( addr ) ;
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# else
2014-04-01 18:18:52 -04:00
ARMul_UndefInstr ( state , instr ) ;
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# endif
2014-04-01 18:18:52 -04:00
return ;
}
/* For pre indexed or post indexed addressing modes,
check that the destination registers do not overlap
the address registers . */
if ( ( ! pre_indexed | | write_back )
& & ( addr_reg = = dest_reg | | addr_reg = = dest_reg + 1 ) ) {
ARMul_UndefInstr ( state , instr ) ;
return ;
}
/* Load the words. */
value1 = ARMul_LoadWordN ( state , addr ) ;
value2 = ARMul_LoadWordN ( state , addr + 4 ) ;
/* Check for data aborts. */
if ( state - > Aborted ) {
TAKEABORT ;
return ;
}
ARMul_Icycles ( state , 2 , 0L ) ;
/* Store the values. */
state - > Reg [ dest_reg ] = value1 ;
state - > Reg [ dest_reg + 1 ] = value2 ;
/* Do the post addressing and writeback. */
if ( ! pre_indexed )
addr = sum ;
if ( ! pre_indexed | | write_back )
state - > Reg [ addr_reg ] = addr ;
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}
/* This function does the work of storing two words for a STRD instruction. */
static void
Handle_Store_Double ( ARMul_State * state , ARMword instr )
{
2014-04-01 18:18:52 -04:00
ARMword src_reg ;
ARMword addr_reg ;
ARMword write_back = BIT ( 21 ) ;
ARMword immediate = BIT ( 22 ) ;
ARMword add_to_base = BIT ( 23 ) ;
ARMword pre_indexed = BIT ( 24 ) ;
ARMword offset ;
ARMword addr ;
ARMword sum ;
ARMword base ;
BUSUSEDINCPCS ;
/* If the writeback bit is set, the pre-index bit must be clear. */
if ( write_back & & ! pre_indexed ) {
ARMul_UndefInstr ( state , instr ) ;
return ;
}
/* Extract the base address register. */
addr_reg = LHSReg ;
/* Base register cannot be PC. */
if ( addr_reg = = 15 ) {
ARMul_UndefInstr ( state , instr ) ;
return ;
}
/* Extract the source register. */
src_reg = DESTReg ;
/* Source register must be even. */
if ( src_reg & 1 ) {
ARMul_UndefInstr ( state , instr ) ;
return ;
}
/* Compute the base address. */
base = state - > Reg [ addr_reg ] ;
/* Compute the offset. */
offset = immediate ? ( ( BITS ( 8 , 11 ) < < 4 ) | BITS ( 0 , 3 ) ) : state - >
Reg [ RHSReg ] ;
/* Compute the sum of the two. */
if ( add_to_base )
sum = base + offset ;
else
sum = base - offset ;
/* If this is a pre-indexed mode use the sum. */
if ( pre_indexed )
addr = sum ;
else
addr = base ;
/* The address must be aligned on a 8 byte boundary. */
if ( addr & 0x7 ) {
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# ifdef ABORTS
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ARMul_DATAABORT ( addr ) ;
2013-09-17 23:03:54 -04:00
# else
2014-04-01 18:18:52 -04:00
ARMul_UndefInstr ( state , instr ) ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
return ;
}
/* For pre indexed or post indexed addressing modes,
check that the destination registers do not overlap
the address registers . */
if ( ( ! pre_indexed | | write_back )
& & ( addr_reg = = src_reg | | addr_reg = = src_reg + 1 ) ) {
ARMul_UndefInstr ( state , instr ) ;
return ;
}
/* Load the words. */
ARMul_StoreWordN ( state , addr , state - > Reg [ src_reg ] ) ;
ARMul_StoreWordN ( state , addr + 4 , state - > Reg [ src_reg + 1 ] ) ;
if ( state - > Aborted ) {
TAKEABORT ;
return ;
}
/* Do the post addressing and writeback. */
if ( ! pre_indexed )
addr = sum ;
if ( ! pre_indexed | | write_back )
state - > Reg [ addr_reg ] = addr ;
2013-09-17 23:03:54 -04:00
}
/* This function does the work of storing a word from a STR instruction. */
static unsigned
StoreWord ( ARMul_State * state , ARMword instr , ARMword address )
{
2014-04-01 18:18:52 -04:00
//MEM_STORE_LOG("WORD");
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
BUSUSEDINCPCN ;
2013-09-17 23:03:54 -04:00
# ifndef MODE32
2014-04-01 18:18:52 -04:00
if ( DESTReg = = 15 )
state - > Reg [ 15 ] = ECC | ER15INT | R15PC | EMODE ;
2013-09-17 23:03:54 -04:00
# endif
# ifdef MODE32
2014-04-01 18:18:52 -04:00
ARMul_StoreWordN ( state , address , DEST ) ;
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# else
2014-04-01 18:18:52 -04:00
if ( VECTORACCESS ( address ) | | ADDREXCEPT ( address ) ) {
INTERNALABORT ( address ) ;
( void ) ARMul_LoadWordN ( state , address ) ;
}
else
ARMul_StoreWordN ( state , address , DEST ) ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
if ( state - > Aborted ) {
TAKEABORT ;
return state - > lateabtSig ;
}
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
return TRUE ;
2013-09-17 23:03:54 -04:00
}
# ifdef MODET
/* This function does the work of storing a byte for a STRH instruction. */
static unsigned
StoreHalfWord ( ARMul_State * state , ARMword instr , ARMword address )
{
2014-04-01 18:18:52 -04:00
//MEM_STORE_LOG("HALFWORD");
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
BUSUSEDINCPCN ;
2013-09-17 23:03:54 -04:00
# ifndef MODE32
2014-04-01 18:18:52 -04:00
if ( DESTReg = = 15 )
state - > Reg [ 15 ] = ECC | ER15INT | R15PC | EMODE ;
2013-09-17 23:03:54 -04:00
# endif
# ifdef MODE32
2014-04-01 18:18:52 -04:00
ARMul_StoreHalfWord ( state , address , DEST ) ;
2013-09-17 23:03:54 -04:00
# else
2014-04-01 18:18:52 -04:00
if ( VECTORACCESS ( address ) | | ADDREXCEPT ( address ) ) {
INTERNALABORT ( address ) ;
( void ) ARMul_LoadHalfWord ( state , address ) ;
}
else
ARMul_StoreHalfWord ( state , address , DEST ) ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
if ( state - > Aborted ) {
TAKEABORT ;
return state - > lateabtSig ;
}
return TRUE ;
2013-09-17 23:03:54 -04:00
}
# endif /* MODET */
/* This function does the work of storing a byte for a STRB instruction. */
static unsigned
StoreByte ( ARMul_State * state , ARMword instr , ARMword address )
{
2014-04-01 18:18:52 -04:00
//MEM_STORE_LOG("BYTE");
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
BUSUSEDINCPCN ;
2013-09-17 23:03:54 -04:00
# ifndef MODE32
2014-04-01 18:18:52 -04:00
if ( DESTReg = = 15 )
state - > Reg [ 15 ] = ECC | ER15INT | R15PC | EMODE ;
2013-09-17 23:03:54 -04:00
# endif
# ifdef MODE32
2014-04-01 18:18:52 -04:00
ARMul_StoreByte ( state , address , DEST ) ;
2013-09-17 23:03:54 -04:00
# else
2014-04-01 18:18:52 -04:00
if ( VECTORACCESS ( address ) | | ADDREXCEPT ( address ) ) {
INTERNALABORT ( address ) ;
( void ) ARMul_LoadByte ( state , address ) ;
}
else
ARMul_StoreByte ( state , address , DEST ) ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
if ( state - > Aborted ) {
TAKEABORT ;
return state - > lateabtSig ;
}
//UNDEF_LSRBPC;
return TRUE ;
2013-09-17 23:03:54 -04:00
}
/* This function does the work of loading the registers listed in an LDM
instruction , when the S bit is clear . The code here is always increment
after , it ' s up to the caller to get the input address correct and to
handle base register modification . */
static void
LoadMult ( ARMul_State * state , ARMword instr , ARMword address , ARMword WBBase )
{
2014-04-01 18:18:52 -04:00
ARMword dest , temp ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
//UNDEF_LSMNoRegs;
//UNDEF_LSMPCBase;
//UNDEF_LSMBaseInListWb;
BUSUSEDINCPCS ;
2013-09-17 23:03:54 -04:00
# ifndef MODE32
2014-04-01 18:18:52 -04:00
if ( ADDREXCEPT ( address ) )
INTERNALABORT ( address ) ;
2013-09-17 23:03:54 -04:00
# endif
/*chy 2004-05-23 may write twice
if ( BIT ( 21 ) & & LHSReg ! = 15 )
LSBase = WBBase ;
*/
2014-04-01 18:18:52 -04:00
/* N cycle first. */
for ( temp = 0 ; ! BIT ( temp ) ; temp + + ) ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
dest = ARMul_LoadWordN ( state , address ) ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
if ( ! state - > abortSig & & ! state - > Aborted )
state - > Reg [ temp + + ] = dest ;
else if ( ! state - > Aborted ) {
XScale_set_fsr_far ( state , ARMul_CP15_R5_ST_ALIGN , address ) ;
state - > Aborted = ARMul_DataAbortV ;
}
2013-09-17 23:03:54 -04:00
/*chy 2004-05-23 chy goto end*/
2014-04-01 18:18:52 -04:00
if ( state - > Aborted )
goto L_ldm_makeabort ;
/* S cycles from here on. */
for ( ; temp < 16 ; temp + + )
if ( BIT ( temp ) ) {
/* Load this register. */
address + = 4 ;
dest = ARMul_LoadWordS ( state , address ) ;
if ( ! state - > abortSig & & ! state - > Aborted )
state - > Reg [ temp ] = dest ;
else if ( ! state - > Aborted ) {
XScale_set_fsr_far ( state ,
ARMul_CP15_R5_ST_ALIGN ,
address ) ;
state - > Aborted = ARMul_DataAbortV ;
}
/*chy 2004-05-23 chy goto end */
if ( state - > Aborted )
goto L_ldm_makeabort ;
}
if ( BIT ( 15 ) & & ! state - > Aborted )
/* PC is in the reg list. */
2014-04-04 22:24:41 -04:00
WriteR15Branch ( state , ( state - > Reg [ 15 ] & PCMASK ) ) ;
2014-04-01 18:18:52 -04:00
/* To write back the final register. */
2013-09-17 23:03:54 -04:00
/* ARMul_Icycles (state, 1, 0L);*/
/*chy 2004-05-23, see below
if ( state - > Aborted )
{
if ( BIT ( 21 ) & & LHSReg ! = 15 )
LSBase = WBBase ;
TAKEABORT ;
}
*/
/*chy 2004-05-23 should compare the Abort Models*/
L_ldm_makeabort :
2014-04-01 18:18:52 -04:00
/* To write back the final register. */
ARMul_Icycles ( state , 1 , 0L ) ;
/* chy 2005-11-24, bug found by benjl@cse.unsw.edu.au, etc */
/*
if ( state - > Aborted )
{
if ( BIT ( 21 ) & & LHSReg ! = 15 )
if ( ! ( state - > abortSig & & state - > Aborted & & state - > lateabtSig = = LOW ) )
LSBase = WBBase ;
TAKEABORT ;
} else if ( BIT ( 21 ) & & LHSReg ! = 15 )
LSBase = WBBase ;
*/
if ( state - > Aborted ) {
if ( BIT ( 21 ) & & LHSReg ! = 15 ) {
if ( ! ( state - > abortSig ) ) {
}
}
TAKEABORT ;
}
else if ( BIT ( 21 ) & & LHSReg ! = 15 ) {
LSBase = WBBase ;
}
/* chy 2005-11-24, over */
2013-09-17 23:03:54 -04:00
}
/* This function does the work of loading the registers listed in an LDM
instruction , when the S bit is set . The code here is always increment
after , it ' s up to the caller to get the input address correct and to
handle base register modification . */
static void
LoadSMult ( ARMul_State * state ,
2014-04-01 18:18:52 -04:00
ARMword instr , ARMword address , ARMword WBBase )
2013-09-17 23:03:54 -04:00
{
2014-04-01 18:18:52 -04:00
ARMword dest , temp ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
//UNDEF_LSMNoRegs;
//UNDEF_LSMPCBase;
//UNDEF_LSMBaseInListWb;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
BUSUSEDINCPCS ;
2013-09-17 23:03:54 -04:00
# ifndef MODE32
2014-04-01 18:18:52 -04:00
if ( ADDREXCEPT ( address ) )
INTERNALABORT ( address ) ;
2013-09-17 23:03:54 -04:00
# endif
/* chy 2004-05-23, may write twice
if ( BIT ( 21 ) & & LHSReg ! = 15 )
LSBase = WBBase ;
*/
2014-04-01 18:18:52 -04:00
if ( ! BIT ( 15 ) & & state - > Bank ! = USERBANK ) {
/* Temporary reg bank switch. */
( void ) ARMul_SwitchMode ( state , state - > Mode , USER26MODE ) ;
UNDEF_LSMUserBankWb ;
}
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
/* N cycle first. */
for ( temp = 0 ; ! BIT ( temp ) ; temp + + ) ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
dest = ARMul_LoadWordN ( state , address ) ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
if ( ! state - > abortSig )
state - > Reg [ temp + + ] = dest ;
else if ( ! state - > Aborted ) {
XScale_set_fsr_far ( state , ARMul_CP15_R5_ST_ALIGN , address ) ;
state - > Aborted = ARMul_DataAbortV ;
}
2013-09-17 23:03:54 -04:00
/*chy 2004-05-23 chy goto end*/
2014-04-01 18:18:52 -04:00
if ( state - > Aborted )
goto L_ldm_s_makeabort ;
/* S cycles from here on. */
for ( ; temp < 16 ; temp + + )
if ( BIT ( temp ) ) {
/* Load this register. */
address + = 4 ;
dest = ARMul_LoadWordS ( state , address ) ;
if ( ! state - > abortSig & & ! state - > Aborted )
state - > Reg [ temp ] = dest ;
else if ( ! state - > Aborted ) {
XScale_set_fsr_far ( state ,
ARMul_CP15_R5_ST_ALIGN ,
address ) ;
state - > Aborted = ARMul_DataAbortV ;
}
/*chy 2004-05-23 chy goto end */
if ( state - > Aborted )
goto L_ldm_s_makeabort ;
}
2013-09-17 23:03:54 -04:00
/*chy 2004-05-23 label of ldm_s_makeabort*/
L_ldm_s_makeabort :
/*chy 2004-06-06 LSBase process should be here, not in the end of this function. Because ARMul_CPSRAltered maybe change R13(SP) R14(lr). If not, simulate INSTR ldmia sp!,[....pc]^ error.*/
/*chy 2004-05-23 should compare the Abort Models*/
2014-04-01 18:18:52 -04:00
if ( state - > Aborted ) {
if ( BIT ( 21 ) & & LHSReg ! = 15 )
if ( !
( state - > abortSig & & state - > Aborted
& & state - > lateabtSig = = LOW ) )
LSBase = WBBase ;
TAKEABORT ;
}
else if ( BIT ( 21 ) & & LHSReg ! = 15 )
LSBase = WBBase ;
if ( BIT ( 15 ) & & ! state - > Aborted ) {
/* PC is in the reg list. */
2013-09-17 23:03:54 -04:00
# ifdef MODE32
2014-04-01 18:18:52 -04:00
//chy 2006-02-16 , should not consider system mode, don't conside 26bit mode
if ( state - > Mode ! = USER26MODE & & state - > Mode ! = USER32MODE ) {
state - > Cpsr = GETSPSR ( state - > Bank ) ;
ARMul_CPSRAltered ( state ) ;
}
2013-09-17 23:03:54 -04:00
2014-04-04 22:24:41 -04:00
WriteR15 ( state , ( state - > Reg [ 15 ] & PCMASK ) ) ;
2013-09-17 23:03:54 -04:00
# else
2014-04-01 18:18:52 -04:00
//chy 2006-02-16 , should not consider system mode, don't conside 26bit mode
if ( state - > Mode = = USER26MODE | | state - > Mode = = USER32MODE ) {
/* Protect bits in user mode. */
ASSIGNN ( ( state - > Reg [ 15 ] & NBIT ) ! = 0 ) ;
ASSIGNZ ( ( state - > Reg [ 15 ] & ZBIT ) ! = 0 ) ;
ASSIGNC ( ( state - > Reg [ 15 ] & CBIT ) ! = 0 ) ;
ASSIGNV ( ( state - > Reg [ 15 ] & VBIT ) ! = 0 ) ;
}
else
ARMul_R15Altered ( state ) ;
FLUSHPIPE ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
}
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
//chy 2006-02-16 , should not consider system mode, don't conside 26bit mode
if ( ! BIT ( 15 ) & & state - > Mode ! = USER26MODE
& & state - > Mode ! = USER32MODE )
/* Restore the correct bank. */
( void ) ARMul_SwitchMode ( state , USER26MODE , state - > Mode ) ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
/* To write back the final register. */
ARMul_Icycles ( state , 1 , 0L ) ;
2013-09-17 23:03:54 -04:00
/* chy 2004-05-23, see below
if ( state - > Aborted )
{
if ( BIT ( 21 ) & & LHSReg ! = 15 )
LSBase = WBBase ;
TAKEABORT ;
}
*/
}
/* This function does the work of storing the registers listed in an STM
instruction , when the S bit is clear . The code here is always increment
after , it ' s up to the caller to get the input address correct and to
handle base register modification . */
static void
StoreMult ( ARMul_State * state ,
2014-04-01 18:18:52 -04:00
ARMword instr , ARMword address , ARMword WBBase )
2013-09-17 23:03:54 -04:00
{
2014-04-01 18:18:52 -04:00
ARMword temp ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
UNDEF_LSMNoRegs ;
UNDEF_LSMPCBase ;
UNDEF_LSMBaseInListWb ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
if ( ! TFLAG )
/* N-cycle, increment the PC and update the NextInstr state. */
BUSUSEDINCPCN ;
2013-09-17 23:03:54 -04:00
# ifndef MODE32
2014-04-01 18:18:52 -04:00
if ( VECTORACCESS ( address ) | | ADDREXCEPT ( address ) )
INTERNALABORT ( address ) ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
if ( BIT ( 15 ) )
PATCHR15 ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
/* N cycle first. */
for ( temp = 0 ; ! BIT ( temp ) ; temp + + ) ;
2013-09-17 23:03:54 -04:00
# ifdef MODE32
2014-04-01 18:18:52 -04:00
ARMul_StoreWordN ( state , address , state - > Reg [ temp + + ] ) ;
2013-09-17 23:03:54 -04:00
# else
2014-04-01 18:18:52 -04:00
if ( state - > Aborted ) {
( void ) ARMul_LoadWordN ( state , address ) ;
/* Fake the Stores as Loads. */
for ( ; temp < 16 ; temp + + )
if ( BIT ( temp ) ) {
/* Save this register. */
address + = 4 ;
( void ) ARMul_LoadWordS ( state , address ) ;
}
if ( BIT ( 21 ) & & LHSReg ! = 15 )
LSBase = WBBase ;
TAKEABORT ;
return ;
}
else
ARMul_StoreWordN ( state , address , state - > Reg [ temp + + ] ) ;
2013-09-17 23:03:54 -04:00
# endif
2014-04-01 18:18:52 -04:00
if ( state - > abortSig & & ! state - > Aborted ) {
XScale_set_fsr_far ( state , ARMul_CP15_R5_ST_ALIGN , address ) ;
state - > Aborted = ARMul_DataAbortV ;
}
2013-09-17 23:03:54 -04:00
//chy 2004-05-23, needn't store other when aborted
2014-04-01 18:18:52 -04:00
if ( state - > Aborted )
goto L_stm_takeabort ;
/* S cycles from here on. */
for ( ; temp < 16 ; temp + + )
if ( BIT ( temp ) ) {
/* Save this register. */
address + = 4 ;
ARMul_StoreWordS ( state , address , state - > Reg [ temp ] ) ;
if ( state - > abortSig & & ! state - > Aborted ) {
XScale_set_fsr_far ( state ,
ARMul_CP15_R5_ST_ALIGN ,
address ) ;
state - > Aborted = ARMul_DataAbortV ;
}
//chy 2004-05-23, needn't store other when aborted
if ( state - > Aborted )
goto L_stm_takeabort ;
2013-09-17 23:03:54 -04:00
2014-04-01 18:18:52 -04:00
}
2013-09-17 23:03:54 -04:00
//chy 2004-05-23,should compare the Abort Models
L_stm_takeabort :
2014-04-01 18:18:52 -04:00
if ( BIT ( 21 ) & & LHSReg ! = 15 ) {
if ( !
( state - > abortSig & & state - > Aborted
& & state - > lateabtSig = = LOW ) )
LSBase = WBBase ;
}
if ( state - > Aborted )
TAKEABORT ;
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}
/* This function does the work of storing the registers listed in an STM
instruction when the S bit is set . The code here is always increment
after , it ' s up to the caller to get the input address correct and to
handle base register modification . */
static void
StoreSMult ( ARMul_State * state ,
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ARMword instr , ARMword address , ARMword WBBase )
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{
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ARMword temp ;
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UNDEF_LSMNoRegs ;
UNDEF_LSMPCBase ;
UNDEF_LSMBaseInListWb ;
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BUSUSEDINCPCN ;
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# ifndef MODE32
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if ( VECTORACCESS ( address ) | | ADDREXCEPT ( address ) )
INTERNALABORT ( address ) ;
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if ( BIT ( 15 ) )
PATCHR15 ;
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# endif
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if ( state - > Bank ! = USERBANK ) {
/* Force User Bank. */
( void ) ARMul_SwitchMode ( state , state - > Mode , USER26MODE ) ;
UNDEF_LSMUserBankWb ;
}
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for ( temp = 0 ; ! BIT ( temp ) ; temp + + ) ; /* N cycle first. */
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# ifdef MODE32
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ARMul_StoreWordN ( state , address , state - > Reg [ temp + + ] ) ;
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# else
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if ( state - > Aborted ) {
( void ) ARMul_LoadWordN ( state , address ) ;
for ( ; temp < 16 ; temp + + )
/* Fake the Stores as Loads. */
if ( BIT ( temp ) ) {
/* Save this register. */
address + = 4 ;
( void ) ARMul_LoadWordS ( state , address ) ;
}
if ( BIT ( 21 ) & & LHSReg ! = 15 )
LSBase = WBBase ;
TAKEABORT ;
return ;
}
else
ARMul_StoreWordN ( state , address , state - > Reg [ temp + + ] ) ;
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# endif
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if ( state - > abortSig & & ! state - > Aborted ) {
XScale_set_fsr_far ( state , ARMul_CP15_R5_ST_ALIGN , address ) ;
state - > Aborted = ARMul_DataAbortV ;
}
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//chy 2004-05-23, needn't store other when aborted
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if ( state - > Aborted )
goto L_stm_s_takeabort ;
/* S cycles from here on. */
for ( ; temp < 16 ; temp + + )
if ( BIT ( temp ) ) {
/* Save this register. */
address + = 4 ;
ARMul_StoreWordS ( state , address , state - > Reg [ temp ] ) ;
if ( state - > abortSig & & ! state - > Aborted ) {
XScale_set_fsr_far ( state ,
ARMul_CP15_R5_ST_ALIGN ,
address ) ;
state - > Aborted = ARMul_DataAbortV ;
}
//chy 2004-05-23, needn't store other when aborted
if ( state - > Aborted )
goto L_stm_s_takeabort ;
}
//chy 2006-02-16 , should not consider system mode, don't conside 26bit mode
if ( state - > Mode ! = USER26MODE & & state - > Mode ! = USER32MODE )
/* Restore the correct bank. */
( void ) ARMul_SwitchMode ( state , USER26MODE , state - > Mode ) ;
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//chy 2004-05-23,should compare the Abort Models
L_stm_s_takeabort :
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if ( BIT ( 21 ) & & LHSReg ! = 15 ) {
if ( !
( state - > abortSig & & state - > Aborted
& & state - > lateabtSig = = LOW ) )
LSBase = WBBase ;
}
if ( state - > Aborted )
TAKEABORT ;
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}
/* This function does the work of adding two 32bit values
together , and calculating if a carry has occurred . */
static ARMword
Add32 ( ARMword a1 , ARMword a2 , int * carry )
{
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ARMword result = ( a1 + a2 ) ;
unsigned int uresult = ( unsigned int ) result ;
unsigned int ua1 = ( unsigned int ) a1 ;
/* If (result == RdLo) and (state->Reg[nRdLo] == 0),
or ( result > RdLo ) then we have no carry . */
if ( ( uresult = = ua1 ) ? ( a2 ! = 0 ) : ( uresult < ua1 ) )
* carry = 1 ;
else
* carry = 0 ;
return result ;
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}
/* This function does the work of multiplying
two 32 bit values to give a 64 bit result . */
static unsigned
Multiply64 ( ARMul_State * state , ARMword instr , int msigned , int scc )
{
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/* Operand register numbers. */
int nRdHi , nRdLo , nRs , nRm ;
ARMword RdHi = 0 , RdLo = 0 , Rm ;
/* Cycle count. */
int scount ;
nRdHi = BITS ( 16 , 19 ) ;
nRdLo = BITS ( 12 , 15 ) ;
nRs = BITS ( 8 , 11 ) ;
nRm = BITS ( 0 , 3 ) ;
/* Needed to calculate the cycle count. */
Rm = state - > Reg [ nRm ] ;
/* Check for illegal operand combinations first. */
if ( nRdHi ! = 15
& & nRdLo ! = 15
& & nRs ! = 15
//&& nRm != 15 && nRdHi != nRdLo && nRdHi != nRm && nRdLo != nRm) {
& & nRm ! = 15 & & nRdHi ! = nRdLo ) {
/* Intermediate results. */
ARMword lo , mid1 , mid2 , hi ;
int carry ;
ARMword Rs = state - > Reg [ nRs ] ;
int sign = 0 ;
if ( msigned ) {
/* Compute sign of result and adjust operands if necessary. */
sign = ( Rm ^ Rs ) & 0x80000000 ;
if ( ( ( signed int ) Rm ) < 0 )
Rm = - Rm ;
if ( ( ( signed int ) Rs ) < 0 )
Rs = - Rs ;
}
/* We can split the 32x32 into four 16x16 operations. This
ensures that we do not lose precision on 32 bit only hosts . */
lo = ( ( Rs & 0xFFFF ) * ( Rm & 0xFFFF ) ) ;
mid1 = ( ( Rs & 0xFFFF ) * ( ( Rm > > 16 ) & 0xFFFF ) ) ;
mid2 = ( ( ( Rs > > 16 ) & 0xFFFF ) * ( Rm & 0xFFFF ) ) ;
hi = ( ( ( Rs > > 16 ) & 0xFFFF ) * ( ( Rm > > 16 ) & 0xFFFF ) ) ;
/* We now need to add all of these results together, taking
care to propogate the carries from the additions . */
RdLo = Add32 ( lo , ( mid1 < < 16 ) , & carry ) ;
RdHi = carry ;
RdLo = Add32 ( RdLo , ( mid2 < < 16 ) , & carry ) ;
RdHi + = ( carry + ( ( mid1 > > 16 ) & 0xFFFF ) +
( ( mid2 > > 16 ) & 0xFFFF ) + hi ) ;
if ( sign ) {
/* Negate result if necessary. */
RdLo = ~ RdLo ;
RdHi = ~ RdHi ;
if ( RdLo = = 0xFFFFFFFF ) {
RdLo = 0 ;
RdHi + = 1 ;
}
else
RdLo + = 1 ;
}
state - > Reg [ nRdLo ] = RdLo ;
state - > Reg [ nRdHi ] = RdHi ;
}
else {
fprintf ( stderr , " sim: MULTIPLY64 - INVALID ARGUMENTS, instr=0x%x \n " , instr ) ;
}
if ( scc )
/* Ensure that both RdHi and RdLo are used to compute Z,
but don ' t let RdLo ' s sign bit make it to N . */
ARMul_NegZero ( state , RdHi | ( RdLo > > 16 ) | ( RdLo & 0xFFFF ) ) ;
/* The cycle count depends on whether the instruction is a signed or
unsigned multiply , and what bits are clear in the multiplier . */
if ( msigned & & ( Rm & ( ( unsigned ) 1 < < 31 ) ) )
/* Invert the bits to make the check against zero. */
Rm = ~ Rm ;
if ( ( Rm & 0xFFFFFF00 ) = = 0 )
scount = 1 ;
else if ( ( Rm & 0xFFFF0000 ) = = 0 )
scount = 2 ;
else if ( ( Rm & 0xFF000000 ) = = 0 )
scount = 3 ;
else
scount = 4 ;
return 2 + scount ;
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}
/* This function does the work of multiplying two 32bit
values and adding a 64 bit value to give a 64 bit result . */
static unsigned
MultiplyAdd64 ( ARMul_State * state , ARMword instr , int msigned , int scc )
{
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unsigned scount ;
ARMword RdLo , RdHi ;
int nRdHi , nRdLo ;
int carry = 0 ;
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nRdHi = BITS ( 16 , 19 ) ;
nRdLo = BITS ( 12 , 15 ) ;
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RdHi = state - > Reg [ nRdHi ] ;
RdLo = state - > Reg [ nRdLo ] ;
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scount = Multiply64 ( state , instr , msigned , LDEFAULT ) ;
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RdLo = Add32 ( RdLo , state - > Reg [ nRdLo ] , & carry ) ;
RdHi = ( RdHi + state - > Reg [ nRdHi ] ) + carry ;
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state - > Reg [ nRdLo ] = RdLo ;
state - > Reg [ nRdHi ] = RdHi ;
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if ( scc )
/* Ensure that both RdHi and RdLo are used to compute Z,
but don ' t let RdLo ' s sign bit make it to N . */
ARMul_NegZero ( state , RdHi | ( RdLo > > 16 ) | ( RdLo & 0xFFFF ) ) ;
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/* Extra cycle for addition. */
return scount + 1 ;
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}
/* Attempt to emulate an ARMv6 instruction.
Returns non - zero upon success . */
static int
handle_v6_insn ( ARMul_State * state , ARMword instr )
{
switch ( BITS ( 20 , 27 ) )
{
#if 0
case 0x03 : printf ( " Unhandled v6 insn: ldr \n " ) ; break ;
case 0x04 : printf ( " Unhandled v6 insn: umaal \n " ) ; break ;
case 0x06 : printf ( " Unhandled v6 insn: mls/str \n " ) ; break ;
case 0x16 : printf ( " Unhandled v6 insn: smi \n " ) ; break ;
case 0x18 : printf ( " Unhandled v6 insn: strex \n " ) ; break ;
case 0x19 : printf ( " Unhandled v6 insn: ldrex \n " ) ; break ;
case 0x1a : printf ( " Unhandled v6 insn: strexd \n " ) ; break ;
case 0x1b : printf ( " Unhandled v6 insn: ldrexd \n " ) ; break ;
case 0x1c : printf ( " Unhandled v6 insn: strexb \n " ) ; break ;
case 0x1d : printf ( " Unhandled v6 insn: ldrexb \n " ) ; break ;
case 0x1e : printf ( " Unhandled v6 insn: strexh \n " ) ; break ;
case 0x1f : printf ( " Unhandled v6 insn: ldrexh \n " ) ; break ;
case 0x30 : printf ( " Unhandled v6 insn: movw \n " ) ; break ;
case 0x32 : printf ( " Unhandled v6 insn: nop/sev/wfe/wfi/yield \n " ) ; break ;
case 0x34 : printf ( " Unhandled v6 insn: movt \n " ) ; break ;
case 0x3f : printf ( " Unhandled v6 insn: rbit \n " ) ; break ;
case 0x61 : printf ( " Unhandled v6 insn: sadd/ssub \n " ) ; break ;
case 0x62 : printf ( " Unhandled v6 insn: qadd/qsub \n " ) ; break ;
case 0x63 : printf ( " Unhandled v6 insn: shadd/shsub \n " ) ; break ;
case 0x65 : printf ( " Unhandled v6 insn: uadd/usub \n " ) ; break ;
case 0x66 : printf ( " Unhandled v6 insn: uqadd/uqsub \n " ) ; break ;
case 0x67 : printf ( " Unhandled v6 insn: uhadd/uhsub \n " ) ; break ;
case 0x68 : printf ( " Unhandled v6 insn: pkh/sxtab/selsxtb \n " ) ; break ;
# endif
case 0x6c : printf ( " Unhandled v6 insn: uxtb16/uxtab16 \n " ) ; break ;
case 0x70 : printf ( " Unhandled v6 insn: smuad/smusd/smlad/smlsd \n " ) ; break ;
case 0x74 : printf ( " Unhandled v6 insn: smlald/smlsld \n " ) ; break ;
case 0x75 : printf ( " Unhandled v6 insn: smmla/smmls/smmul \n " ) ; break ;
case 0x78 : printf ( " Unhandled v6 insn: usad/usada8 \n " ) ; break ;
#if 0
case 0x7a : printf ( " Unhandled v6 insn: usbfx \n " ) ; break ;
case 0x7c : printf ( " Unhandled v6 insn: bfc/bfi \n " ) ; break ;
# endif
/* add new instr for arm v6. */
ARMword lhs , temp ;
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case 0x18 : /* ORR reg */
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{
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/* dyf add armv6 instr strex 2010.9.17 */
if ( BITS ( 4 , 7 ) = = 0x9 ) {
lhs = LHS ;
ARMul_StoreWordS ( state , lhs , RHS ) ;
//StoreWord(state, lhs, RHS)
if ( state - > Aborted ) {
TAKEABORT ;
}
return 1 ;
}
break ;
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}
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case 0x19 : /* orrs reg */
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{
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/* dyf add armv6 instr ldrex */
if ( BITS ( 4 , 7 ) = = 0x9 ) {
lhs = LHS ;
LoadWord ( state , instr , lhs ) ;
return 1 ;
}
break ;
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}
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case 0x1c : /* BIC reg */
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{
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/* dyf add for STREXB */
if ( BITS ( 4 , 7 ) = = 0x9 ) {
lhs = LHS ;
ARMul_StoreByte ( state , lhs , RHS ) ;
BUSUSEDINCPCN ;
if ( state - > Aborted ) {
TAKEABORT ;
}
//printf("In %s, strexb not implemented\n", __FUNCTION__);
UNDEF_LSRBPC ;
/* WRITESDEST (dest); */
return 1 ;
}
break ;
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}
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case 0x1d : /* BICS reg */
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{
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if ( ( BITS ( 4 , 7 ) ) = = 0x9 ) {
/* ldrexb */
temp = LHS ;
LoadByte ( state , instr , temp , LUNSIGNED ) ;
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//state->Reg[BITS(12, 15)] = ARMul_LoadByte(state, state->Reg[BITS(16, 19)]);
//printf("ldrexb\n");
//printf("instr is %x rm is %d\n", instr, BITS(16, 19));
//exit(-1);
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//printf("In %s, ldrexb not implemented\n", __FUNCTION__);
return 1 ;
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}
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break ;
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}
/* add end */
case 0x6a :
{
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ARMword Rm ;
int ror = - 1 ;
switch ( BITS ( 4 , 11 ) )
{
case 0x07 : ror = 0 ; break ;
case 0x47 : ror = 8 ; break ;
case 0x87 : ror = 16 ; break ;
case 0xc7 : ror = 24 ; break ;
case 0x01 :
case 0xf3 :
printf ( " Unhandled v6 insn: ssat \n " ) ;
return 0 ;
default :
break ;
}
if ( ror = = - 1 )
{
if ( BITS ( 4 , 6 ) = = 0x7 )
{
printf ( " Unhandled v6 insn: ssat \n " ) ;
return 0 ;
}
break ;
}
Rm = ( ( state - > Reg [ BITS ( 0 , 3 ) ] > > ror ) & 0xFF ) ;
if ( Rm & 0x80 )
Rm | = 0xffffff00 ;
if ( BITS ( 16 , 19 ) = = 0xf )
/* SXTB */
state - > Reg [ BITS ( 12 , 15 ) ] = Rm ;
else
/* SXTAB */
state - > Reg [ BITS ( 12 , 15 ) ] + = Rm ;
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}
return 1 ;
case 0x6b :
{
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ARMword Rm ;
int ror = - 1 ;
switch ( BITS ( 4 , 11 ) )
{
case 0x07 : ror = 0 ; break ;
case 0x47 : ror = 8 ; break ;
case 0x87 : ror = 16 ; break ;
case 0xc7 : ror = 24 ; break ;
case 0xf3 :
DEST = ( ( RHS & 0xFF ) < < 24 ) | ( ( RHS & 0xFF00 ) ) < < 8 | ( ( RHS & 0xFF0000 ) > > 8 ) | ( ( RHS & 0xFF000000 ) > > 24 ) ;
return 1 ;
case 0xfb :
DEST = ( ( RHS & 0xFF ) < < 8 ) | ( ( RHS & 0xFF00 ) ) > > 8 | ( ( RHS & 0xFF0000 ) < < 8 ) | ( ( RHS & 0xFF000000 ) > > 8 ) ;
return 1 ;
default :
break ;
}
if ( ror = = - 1 )
break ;
Rm = ( ( state - > Reg [ BITS ( 0 , 3 ) ] > > ror ) & 0xFFFF ) ;
if ( Rm & 0x8000 )
Rm | = 0xffff0000 ;
if ( BITS ( 16 , 19 ) = = 0xf )
/* SXTH */
state - > Reg [ BITS ( 12 , 15 ) ] = Rm ;
else
/* SXTAH */
state - > Reg [ BITS ( 12 , 15 ) ] = state - > Reg [ BITS ( 16 , 19 ) ] + Rm ;
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}
return 1 ;
case 0x6e :
{
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ARMword Rm ;
int ror = - 1 ;
switch ( BITS ( 4 , 11 ) )
{
case 0x07 : ror = 0 ; break ;
case 0x47 : ror = 8 ; break ;
case 0x87 : ror = 16 ; break ;
case 0xc7 : ror = 24 ; break ;
case 0x01 :
case 0xf3 :
printf ( " Unhandled v6 insn: usat \n " ) ;
return 0 ;
default :
break ;
}
if ( ror = = - 1 )
{
if ( BITS ( 4 , 6 ) = = 0x7 )
{
printf ( " Unhandled v6 insn: usat \n " ) ;
return 0 ;
}
break ;
}
Rm = ( ( state - > Reg [ BITS ( 0 , 3 ) ] > > ror ) & 0xFF ) ;
if ( BITS ( 16 , 19 ) = = 0xf )
/* UXTB */
state - > Reg [ BITS ( 12 , 15 ) ] = Rm ;
else
/* UXTAB */
state - > Reg [ BITS ( 12 , 15 ) ] = state - > Reg [ BITS ( 16 , 19 ) ] + Rm ;
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}
return 1 ;
case 0x6f :
{
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ARMword Rm ;
int ror = - 1 ;
switch ( BITS ( 4 , 11 ) )
{
case 0x07 : ror = 0 ; break ;
case 0x47 : ror = 8 ; break ;
case 0x87 : ror = 16 ; break ;
case 0xc7 : ror = 24 ; break ;
case 0xfb :
printf ( " Unhandled v6 insn: revsh \n " ) ;
return 0 ;
default :
break ;
}
if ( ror = = - 1 )
break ;
Rm = ( ( state - > Reg [ BITS ( 0 , 3 ) ] > > ror ) & 0xFFFF ) ;
/* UXT */
/* state->Reg[BITS (12, 15)] = Rm; */
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/* dyf add */
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if ( BITS ( 16 , 19 ) = = 0xf ) {
state - > Reg [ BITS ( 12 , 15 ) ] = ( Rm > > ( 8 * BITS ( 10 , 11 ) ) ) & 0x0000FFFF ;
} else {
/* UXTAH */
/* state->Reg[BITS (12, 15)] = state->Reg [BITS (16, 19)] + Rm; */
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// printf("rd is %x rn is %x rm is %x rotate is %x\n", state->Reg[BITS (12, 15)], state->Reg[BITS (16, 19)]
// , Rm, BITS(10, 11));
// printf("icounter is %lld\n", state->NumInstrs);
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state - > Reg [ BITS ( 12 , 15 ) ] = ( state - > Reg [ BITS ( 16 , 19 ) ] > > ( 8 * ( BITS ( 10 , 11 ) ) ) ) + Rm ;
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// printf("rd is %x\n", state->Reg[BITS (12, 15)]);
// exit(-1);
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}
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}
return 1 ;
#if 0
case 0x84 : printf ( " Unhandled v6 insn: srs \n " ) ; break ;
# endif
default :
break ;
}
printf ( " Unhandled v6 insn: UNKNOWN: %08x \n " , instr ) ;
return 0 ;
}
