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-rw-r--r--src/core/arm/dyncom/arm_dyncom_interpreter.cpp305
-rw-r--r--src/core/arm/interpreter/armsupp.cpp16
-rw-r--r--src/core/arm/skyeye_common/armdefs.h1
3 files changed, 175 insertions, 147 deletions
diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
index bf864c7a7..bae280b1c 100644
--- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
+++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
@@ -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);
diff --git a/src/core/arm/interpreter/armsupp.cpp b/src/core/arm/interpreter/armsupp.cpp
index 68ac2a0ce..e2626eefb 100644
--- a/src/core/arm/interpreter/armsupp.cpp
+++ b/src/core/arm/interpreter/armsupp.cpp
@@ -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)
{
diff --git a/src/core/arm/skyeye_common/armdefs.h b/src/core/arm/skyeye_common/armdefs.h
index 1b2cef451..560b51a9f 100644
--- a/src/core/arm/skyeye_common/armdefs.h
+++ b/src/core/arm/skyeye_common/armdefs.h
@@ -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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 11:24:02 +0100