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dyncom: Implement SADD8/SSUB8

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This commit is contained in:
Lioncash 2015-01-01 09:39:40 -05:00
parent 08b6cf778d
commit 4e2cb06b81
1 changed files with 108 additions and 55 deletions
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163
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
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@ -2171,29 +2171,45 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(rsc)(unsigned int inst, int index)
} }
return inst_base; return inst_base;
} }
ARM_INST_PTR INTERPRETER_TRANSLATE(sadd8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SADD8"); } ARM_INST_PTR INTERPRETER_TRANSLATE(sadd8)(unsigned int inst, int index)
ARM_INST_PTR INTERPRETER_TRANSLATE(sadd16)(unsigned int inst, int index)
{ {
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst)); arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst));
generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component; generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component;
inst_base->cond = BITS(inst, 28, 31); inst_base->cond = BITS(inst, 28, 31);
inst_base->idx = index; inst_base->idx = index;
inst_base->br = NON_BRANCH; inst_base->br = NON_BRANCH;
inst_base->load_r15 = 0; inst_base->load_r15 = 0;
inst_cream->Rm = BITS(inst, 0, 3); inst_cream->Rm = BITS(inst, 0, 3);
inst_cream->Rn = BITS(inst, 16, 19); inst_cream->Rn = BITS(inst, 16, 19);
inst_cream->Rd = BITS(inst, 12, 15); inst_cream->Rd = BITS(inst, 12, 15);
inst_cream->op1 = BITS(inst, 20, 21); inst_cream->op1 = BITS(inst, 20, 21);
inst_cream->op2 = BITS(inst, 5, 7); inst_cream->op2 = BITS(inst, 5, 7);
return inst_base; return inst_base;
} }
ARM_INST_PTR INTERPRETER_TRANSLATE(sadd16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(sadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(saddsubx)(unsigned int inst, int index) ARM_INST_PTR INTERPRETER_TRANSLATE(saddsubx)(unsigned int inst, int index)
{ {
return INTERPRETER_TRANSLATE(sadd16)(inst, index); return INTERPRETER_TRANSLATE(sadd8)(inst, index);
} }
ARM_INST_PTR INTERPRETER_TRANSLATE(ssub8)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(sadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(ssub16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(sadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(ssubaddx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(sadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(sbc)(unsigned int inst, int index) ARM_INST_PTR INTERPRETER_TRANSLATE(sbc)(unsigned int inst, int index)
{ {
arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(sbc_inst)); arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(sbc_inst));
@ -2408,15 +2424,7 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(ssat16)(unsigned int inst, int index)
return inst_base; return inst_base;
} }
ARM_INST_PTR INTERPRETER_TRANSLATE(ssub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SSUB8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(ssub16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(sadd16)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(ssubaddx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(sadd16)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(stc)(unsigned int inst, int index) ARM_INST_PTR INTERPRETER_TRANSLATE(stc)(unsigned int inst, int index)
{ {
arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(stc_inst)); arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(stc_inst));
@ -5039,6 +5047,7 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
} }
SADD8_INST: SADD8_INST:
SSUB8_INST:
SADD16_INST: SADD16_INST:
SADDSUBX_INST: SADDSUBX_INST:
SSUBADDX_INST: SSUBADDX_INST:
@ -5046,52 +5055,96 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
{ {
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) { if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component; generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component;
const u8 op2 = inst_cream->op2;
const s16 rn_lo = (RN & 0xFFFF); if (op2 == 0x00 || op2 == 0x01 || op2 == 0x02 || op2 == 0x03) {
const s16 rn_hi = ((RN >> 16) & 0xFFFF); const s16 rn_lo = (RN & 0xFFFF);
const s16 rm_lo = (RM & 0xFFFF); const s16 rn_hi = ((RN >> 16) & 0xFFFF);
const s16 rm_hi = ((RM >> 16) & 0xFFFF); const s16 rm_lo = (RM & 0xFFFF);
const s16 rm_hi = ((RM >> 16) & 0xFFFF);
s32 lo_result = 0; s32 lo_result = 0;
s32 hi_result = 0; s32 hi_result = 0;
// SADD16 // SADD16
if (inst_cream->op2 == 0x00) { if (inst_cream->op2 == 0x00) {
lo_result = (rn_lo + rm_lo); lo_result = (rn_lo + rm_lo);
hi_result = (rn_hi + rm_hi); hi_result = (rn_hi + rm_hi);
} }
// SASX // SASX
else if (inst_cream->op2 == 0x01) { else if (op2 == 0x01) {
lo_result = (rn_lo - rm_hi); lo_result = (rn_lo - rm_hi);
hi_result = (rn_hi + rm_lo); hi_result = (rn_hi + rm_lo);
} }
// SSAX // SSAX
else if (inst_cream->op2 == 0x02) { else if (op2 == 0x02) {
lo_result = (rn_lo + rm_hi); lo_result = (rn_lo + rm_hi);
hi_result = (rn_hi - rm_lo); hi_result = (rn_hi - rm_lo);
} }
// SSUB16 // SSUB16
else if (inst_cream->op2 == 0x03) { else if (op2 == 0x03) {
lo_result = (rn_lo - rm_lo); lo_result = (rn_lo - rm_lo);
hi_result = (rn_hi - rm_hi); hi_result = (rn_hi - rm_hi);
}
RD = (lo_result & 0xFFFF) | ((hi_result & 0xFFFF) << 16);
if (lo_result >= 0) {
cpu->Cpsr |= (1 << 16);
cpu->Cpsr |= (1 << 17);
} else {
cpu->Cpsr &= ~(1 << 16);
cpu->Cpsr &= ~(1 << 17);
}
if (hi_result >= 0) {
cpu->Cpsr |= (1 << 18);
cpu->Cpsr |= (1 << 19);
} else {
cpu->Cpsr &= ~(1 << 18);
cpu->Cpsr &= ~(1 << 19);
}
} }
else if (op2 == 0x04 || op2 == 0x07) {
s32 lo_val1, lo_val2;
s32 hi_val1, hi_val2;
RD = (lo_result & 0xFFFF) | ((hi_result & 0xFFFF) << 16); // SADD8
if (op2 == 0x04) {
lo_val1 = (s32)(s8)(RN & 0xFF) + (s32)(s8)(RM & 0xFF);
lo_val2 = (s32)(s8)((RN >> 8) & 0xFF) + (s32)(s8)((RM >> 8) & 0xFF);
hi_val1 = (s32)(s8)((RN >> 16) & 0xFF) + (s32)(s8)((RM >> 16) & 0xFF);
hi_val2 = (s32)(s8)((RN >> 24) & 0xFF) + (s32)(s8)((RM >> 24) & 0xFF);
}
// SSUB8
else {
lo_val1 = (s32)(s8)(RN & 0xFF) - (s32)(s8)(RM & 0xFF);
lo_val2 = (s32)(s8)((RN >> 8) & 0xFF) - (s32)(s8)((RM >> 8) & 0xFF);
hi_val1 = (s32)(s8)((RN >> 16) & 0xFF) - (s32)(s8)((RM >> 16) & 0xFF);
hi_val2 = (s32)(s8)((RN >> 24) & 0xFF) - (s32)(s8)((RM >> 24) & 0xFF);
}
if (lo_result >= 0) { RD = ((lo_val1 & 0xFF) | ((lo_val2 & 0xFF) << 8) | ((hi_val1 & 0xFF) << 16) | ((hi_val2 & 0xFF) << 24));
cpu->Cpsr |= (1 << 16);
cpu->Cpsr |= (1 << 17);
} else {
cpu->Cpsr &= ~(1 << 16);
cpu->Cpsr &= ~(1 << 17);
}
if (hi_result >= 0) { if (lo_val1 >= 0)
cpu->Cpsr |= (1 << 18); cpu->Cpsr |= (1 << 16);
cpu->Cpsr |= (1 << 19); else
} else { cpu->Cpsr &= ~(1 << 16);
cpu->Cpsr &= ~(1 << 18);
cpu->Cpsr &= ~(1 << 19); if (lo_val2 >= 0)
cpu->Cpsr |= (1 << 17);
else
cpu->Cpsr &= ~(1 << 17);
if (hi_val1 >= 0)
cpu->Cpsr |= (1 << 18);
else
cpu->Cpsr &= ~(1 << 18);
if (hi_val2 >= 0)
cpu->Cpsr |= (1 << 19);
else
cpu->Cpsr &= ~(1 << 19);
} }
} }
@ -5407,7 +5460,7 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
FETCH_INST; FETCH_INST;
GOTO_NEXT_INST; GOTO_NEXT_INST;
} }
SSUB8_INST:
STC_INST: STC_INST:
{ {
// Instruction not implemented // Instruction not implemented