From 2843d1b98b74b7642f086833da09fd0b50f8ad57 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Mon, 12 Jan 2015 01:11:46 -0500
Subject: [PATCH] dyncom: Get rid of unnecessary outer-scope variables in
InterpreterMainLoop
---
.../arm/dyncom/arm_dyncom_interpreter.cpp | 205 +++++++++---------
1 file changed, 108 insertions(+), 97 deletions(-)
diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
index 88982d5fb..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:
@@ -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));
@@ -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);