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Merge pull request #472 from lioncash/overflow

Browse source 
dyncom: Fix some more V-flag setting ops. Plus some cleanup.
This commit is contained in:
bunnei 2015-01-12 10:35:19 -05:00
commit f3a7b66267
3 changed files with 175 additions and 147 deletions
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305
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
View file

@ -3967,16 +3967,12 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
&&INIT_INST_LENGTH,&&END
};
#endif
arm_inst * inst_base;
unsigned int lop, rop, dst;
arm_inst* inst_base;
unsigned int addr;
unsigned int phys_addr;
unsigned int last_pc = 0;
unsigned int num_instrs = 0;
static unsigned int last_physical_base = 0, last_logical_base = 0;
int ptr;
bool single_step = (cpu->NumInstrsToExecute == 1);
LOAD_NZCVT;
DISPATCH:
@ -4003,16 +3999,13 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
ADC_INST:
{
adc_inst *inst_cream = (adc_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
u32 left = RN;
u32 right = SHIFTER_OPERAND;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
adc_inst* const inst_cream = (adc_inst*)inst_base->component;
u64 unsigned_sum = (left + right + cpu->CFlag);
s64 signed_sum = (s64)(s32)left + (s64)(s32)right + (s64)cpu->CFlag;
u32 result = (unsigned_sum & 0xFFFFFFFF);
bool carry;
bool overflow;
RD = AddWithCarry(RN, SHIFTER_OPERAND, cpu->CFlag, &carry, &overflow);
RD = result;
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -4020,10 +4013,10 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(result);
UPDATE_ZFLAG(result);
UPDATE_CFLAG_CARRY_FROM_ADD(left, right, cpu->CFlag);
cpu->VFlag = ((s64)(s32)result != signed_sum);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
cpu->CFlag = carry;
cpu->VFlag = overflow;
}
if (inst_cream->Rd == 15) {
INC_PC(sizeof(adc_inst));
@ -4037,14 +4030,17 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
ADD_INST:
{
add_inst *inst_cream = (add_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
lop = RN;
if (inst_cream->Rn == 15) {
lop += 2 * GET_INST_SIZE(cpu);
}
rop = SHIFTER_OPERAND;
RD = dst = lop + rop;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
add_inst* const inst_cream = (add_inst*)inst_base->component;
u32 rn_val = RN;
if (inst_cream->Rn == 15)
rn_val += 2 * GET_INST_SIZE(cpu);
bool carry;
bool overflow;
RD = AddWithCarry(rn_val, SHIFTER_OPERAND, 0, &carry, &overflow);
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -4052,10 +4048,10 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_CFLAG(dst, lop, rop);
UPDATE_VFLAG((int)dst, (int)lop, (int)rop);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
cpu->CFlag = carry;
cpu->VFlag = overflow;
}
if (inst_cream->Rd == 15) {
INC_PC(sizeof(add_inst));
@ -4071,9 +4067,9 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
{
and_inst *inst_cream = (and_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
lop = RN;
rop = SHIFTER_OPERAND;
RD = dst = lop & rop;
u32 lop = RN;
u32 rop = SHIFTER_OPERAND;
RD = lop & rop;
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -4081,8 +4077,8 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
UPDATE_CFLAG_WITH_SC;
}
if (inst_cream->Rd == 15) {
@ -4114,12 +4110,12 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
{
bic_inst *inst_cream = (bic_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
lop = RN;
u32 lop = RN;
if (inst_cream->Rn == 15) {
lop += 2 * GET_INST_SIZE(cpu);
}
rop = SHIFTER_OPERAND;
RD = dst = lop & (~rop);
u32 rop = SHIFTER_OPERAND;
RD = lop & (~rop);
if ((inst_cream->S) && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -4127,8 +4123,8 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
UPDATE_CFLAG_WITH_SC;
}
if (inst_cream->Rd == 15) {
@ -4234,15 +4230,17 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
CMN_INST:
{
cmn_inst *inst_cream = (cmn_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
lop = RN;
rop = SHIFTER_OPERAND;
dst = lop + rop;
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_CFLAG(dst, lop, rop);
UPDATE_VFLAG((int)dst, (int)lop, (int)rop);
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
cmn_inst* const inst_cream = (cmn_inst*)inst_base->component;
bool carry;
bool overflow;
u32 result = AddWithCarry(RN, SHIFTER_OPERAND, 0, &carry, &overflow);
UPDATE_NFLAG(result);
UPDATE_ZFLAG(result);
cpu->CFlag = carry;
cpu->VFlag = overflow;
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(cmn_inst));
@ -4251,19 +4249,21 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
CMP_INST:
{
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
cmp_inst *inst_cream = (cmp_inst *)inst_base->component;
lop = RN;
if (inst_cream->Rn == 15) {
lop += 2 * GET_INST_SIZE(cpu);
}
rop = SHIFTER_OPERAND;
dst = lop - rop;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
cmp_inst* const inst_cream = (cmp_inst*)inst_base->component;
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_CFLAG_NOT_BORROW_FROM(lop, rop);
UPDATE_VFLAG_OVERFLOW_FROM(dst, lop, rop);
u32 rn_val = RN;
if (inst_cream->Rn == 15)
rn_val += 2 * GET_INST_SIZE(cpu);
bool carry;
bool overflow;
u32 result = AddWithCarry(rn_val, ~SHIFTER_OPERAND, 1, &carry, &overflow);
UPDATE_NFLAG(result);
UPDATE_ZFLAG(result);
cpu->CFlag = carry;
cpu->VFlag = overflow;
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(cmp_inst));
@ -4321,12 +4321,12 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
{
eor_inst *inst_cream = (eor_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
lop = RN;
u32 lop = RN;
if (inst_cream->Rn == 15) {
lop += 2 * GET_INST_SIZE(cpu);
}
rop = SHIFTER_OPERAND;
RD = dst = lop ^ rop;
u32 rop = SHIFTER_OPERAND;
RD = lop ^ rop;
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -4334,8 +4334,8 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
UPDATE_CFLAG_WITH_SC;
}
if (inst_cream->Rd == 15) {
@ -4852,10 +4852,10 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOG_ERROR(Core_ARM11, "invalid operands for MLA");
CITRA_IGNORE_EXIT(-1);
}
RD = dst = static_cast<uint32_t>((rm * rs + rn) & 0xffffffff);
RD = static_cast<uint32_t>((rm * rs + rn) & 0xffffffff);
if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
}
if (inst_cream->Rd == 15) {
INC_PC(sizeof(mla_inst));
@ -4871,7 +4871,7 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
{
mov_inst *inst_cream = (mov_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
RD = dst = SHIFTER_OPERAND;
RD = SHIFTER_OPERAND;
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -4879,8 +4879,8 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
UPDATE_CFLAG_WITH_SC;
}
if (inst_cream->Rd == 15) {
@ -5016,10 +5016,10 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
uint64_t rm = RM;
uint64_t rs = RS;
RD = dst = static_cast<uint32_t>((rm * rs) & 0xffffffff);
RD = static_cast<uint32_t>((rm * rs) & 0xffffffff);
if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
}
if (inst_cream->Rd == 15) {
INC_PC(sizeof(mul_inst));
@ -5033,9 +5033,11 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
MVN_INST:
{
mvn_inst *inst_cream = (mvn_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
RD = dst = ~SHIFTER_OPERAND;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
mvn_inst* const inst_cream = (mvn_inst*)inst_base->component;
RD = ~SHIFTER_OPERAND;
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -5043,8 +5045,8 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
UPDATE_CFLAG_WITH_SC;
}
if (inst_cream->Rd == 15) {
@ -5059,11 +5061,13 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
ORR_INST:
{
orr_inst *inst_cream = (orr_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
lop = RN;
rop = SHIFTER_OPERAND;
RD = dst = lop | rop;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
orr_inst* const inst_cream = (orr_inst*)inst_base->component;
u32 lop = RN;
u32 rop = SHIFTER_OPERAND;
RD = lop | rop;
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -5071,8 +5075,8 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
UPDATE_CFLAG_WITH_SC;
}
if (inst_cream->Rd == 15) {
@ -5292,14 +5296,17 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
RFE_INST:
RSB_INST:
{
rsb_inst *inst_cream = (rsb_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
rop = RN;
lop = SHIFTER_OPERAND;
if (inst_cream->Rn == 15) {
rop += 2 * GET_INST_SIZE(cpu);;
}
RD = dst = lop - rop;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
rsb_inst* const inst_cream = (rsb_inst*)inst_base->component;
u32 rn_val = RN;
if (inst_cream->Rn == 15)
rn_val += 2 * GET_INST_SIZE(cpu);
bool carry;
bool overflow;
RD = AddWithCarry(~rn_val, SHIFTER_OPERAND, 1, &carry, &overflow);
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -5307,10 +5314,10 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_CFLAG_NOT_BORROW_FROM(lop, rop);
UPDATE_VFLAG_OVERFLOW_FROM(dst, lop, rop);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
cpu->CFlag = carry;
cpu->VFlag = overflow;
}
if (inst_cream->Rd == 15) {
INC_PC(sizeof(rsb_inst));
@ -5324,11 +5331,13 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
RSC_INST:
{
rsc_inst *inst_cream = (rsc_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
lop = RN;
rop = SHIFTER_OPERAND;
RD = dst = rop - lop - !cpu->CFlag;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
rsc_inst* const inst_cream = (rsc_inst*)inst_base->component;
bool carry;
bool overflow;
RD = AddWithCarry(~RN, SHIFTER_OPERAND, cpu->CFlag, &carry, &overflow);
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -5336,10 +5345,10 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_CFLAG_NOT_BORROW_FROM_FLAG(rop, lop, !cpu->CFlag);
UPDATE_VFLAG_OVERFLOW_FROM((int)dst, (int)rop, (int)lop);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
cpu->CFlag = carry;
cpu->VFlag = overflow;
}
if (inst_cream->Rd == 15) {
INC_PC(sizeof(rsc_inst));
@ -5462,11 +5471,13 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
SBC_INST:
{
sbc_inst *inst_cream = (sbc_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
lop = SHIFTER_OPERAND + !cpu->CFlag;
rop = RN;
RD = dst = rop - lop;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
sbc_inst* const inst_cream = (sbc_inst*)inst_base->component;
bool carry;
bool overflow;
RD = AddWithCarry(RN, ~SHIFTER_OPERAND, cpu->CFlag, &carry, &overflow);
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -5474,15 +5485,10 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
if(rop >= !cpu->CFlag)
UPDATE_CFLAG_NOT_BORROW_FROM(rop - !cpu->CFlag, SHIFTER_OPERAND);
else
UPDATE_CFLAG_NOT_BORROW_FROM(rop, !cpu->CFlag);
UPDATE_VFLAG_OVERFLOW_FROM(dst, rop, lop);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
cpu->CFlag = carry;
cpu->VFlag = overflow;
}
if (inst_cream->Rd == 15) {
INC_PC(sizeof(sbc_inst));
@ -6260,14 +6266,17 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
SUB_INST:
{
sub_inst *inst_cream = (sub_inst *)inst_base->component;
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
lop = RN;
if (inst_cream->Rn == 15) {
lop += 8;
}
rop = SHIFTER_OPERAND;
RD = dst = lop - rop;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
sub_inst* const inst_cream = (sub_inst*)inst_base->component;
u32 rn_val = RN;
if (inst_cream->Rn == 15)
rn_val += 8;
bool carry;
bool overflow;
RD = AddWithCarry(rn_val, ~SHIFTER_OPERAND, 1, &carry, &overflow);
if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy;
@ -6275,10 +6284,10 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
LOAD_NZCVT;
}
} else if (inst_cream->S) {
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_CFLAG_NOT_BORROW_FROM(lop, rop);
UPDATE_VFLAG_OVERFLOW_FROM(dst, lop, rop);
UPDATE_NFLAG(RD);
UPDATE_ZFLAG(RD);
cpu->CFlag = carry;
cpu->VFlag = overflow;
}
if (inst_cream->Rd == 15) {
INC_PC(sizeof(sub_inst));
@ -6406,18 +6415,19 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
TEQ_INST:
{
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
teq_inst *inst_cream = (teq_inst *)inst_base->component;
lop = RN;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
teq_inst* const inst_cream = (teq_inst*)inst_base->component;
u32 lop = RN;
u32 rop = SHIFTER_OPERAND;
if (inst_cream->Rn == 15)
lop += GET_INST_SIZE(cpu) * 2;
rop = SHIFTER_OPERAND;
dst = lop ^ rop;
u32 result = lop ^ rop;
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(result);
UPDATE_ZFLAG(result);
UPDATE_CFLAG_WITH_SC;
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
@ -6427,18 +6437,19 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
TST_INST:
{
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
tst_inst *inst_cream = (tst_inst *)inst_base->component;
lop = RN;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
tst_inst* const inst_cream = (tst_inst*)inst_base->component;
u32 lop = RN;
u32 rop = SHIFTER_OPERAND;
if (inst_cream->Rn == 15)
lop += GET_INST_SIZE(cpu) * 2;
rop = SHIFTER_OPERAND;
dst = lop & rop;
u32 result = lop & rop;
UPDATE_NFLAG(dst);
UPDATE_ZFLAG(dst);
UPDATE_NFLAG(result);
UPDATE_ZFLAG(result);
UPDATE_CFLAG_WITH_SC;
}
cpu->Reg[15] += GET_INST_SIZE(cpu);

16
src/core/arm/interpreter/armsupp.cpp
View file

@ -418,6 +418,22 @@ ARMul_NegZero (ARMul_State * state, ARMword result)
}
}
// Add with carry, indicates if a carry-out or signed overflow occurred.
u32 AddWithCarry(u32 left, u32 right, u32 carry_in, bool* carry_out_occurred, bool* overflow_occurred)
{
u64 unsigned_sum = (u64)left + (u64)right + (u64)carry_in;
s64 signed_sum = (s64)(s32)left + (s64)(s32)right + (s64)carry_in;
u64 result = (unsigned_sum & 0xFFFFFFFF);
if (carry_out_occurred)
*carry_out_occurred = (result != unsigned_sum);
if (overflow_occurred)
*overflow_occurred = ((s64)(s32)result != signed_sum);
return (u32)result;
}
// Compute whether an addition of A and B, giving RESULT, overflowed.
bool AddOverflow(ARMword a, ARMword b, ARMword result)
{

1
src/core/arm/skyeye_common/armdefs.h
View file

@ -795,6 +795,7 @@ extern void ARMul_FixSPSR(ARMul_State*, ARMword, ARMword);
extern void ARMul_ConsolePrint(ARMul_State*, const char*, ...);
extern void ARMul_SelectProcessor(ARMul_State*, unsigned);
extern u32 AddWithCarry(u32, u32, u32, bool*, bool*);
extern bool ARMul_AddOverflowQ(ARMword, ARMword);
extern u8 ARMul_SignedSaturatedAdd8(u8, u8);