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dyncom: Implement UADD8/UADD16/USUB8/USUB16/UASX/USAX

pull/15/merge
Lioncash 11 years ago
parent
c5c35c85e5
commit
3cc4af99d1
1 changed files with 208 additions and 9 deletions
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  1. 217
      src/core/arm/dyncom/arm_dyncom_interpreter.cpp

217
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
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@ -2944,9 +2944,46 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(tst)(unsigned int inst, int index)
inst_base->load_r15 = 1;
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(uadd8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UADD8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uadd16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UADD16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uaddsubx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UADDSUBX"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uadd8)(unsigned int inst, int index)
{
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;
inst_base->cond = BITS(inst, 28, 31);
inst_base->idx = index;
inst_base->br = NON_BRANCH;
inst_base->load_r15 = 0;
inst_cream->op1 = BITS(inst, 20, 21);
inst_cream->op2 = BITS(inst, 5, 7);
inst_cream->Rm = BITS(inst, 0, 3);
inst_cream->Rn = BITS(inst, 16, 19);
inst_cream->Rd = BITS(inst, 12, 15);
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(uadd16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(uaddsubx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(usub8)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(usub16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(usubaddx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(uhadd8)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst));
@ -3176,9 +3213,6 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(usat16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(ssat16)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(usub16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USUB16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(usub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USUB8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(usubaddx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USUBADDX"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uxtab16)(unsigned int inst, int index)
{
@ -6074,9 +6108,177 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
FETCH_INST;
GOTO_NEXT_INST;
}
UADD8_INST:
UADD16_INST:
UADDSUBX_INST:
USUB8_INST:
USUB16_INST:
USUBADDX_INST:
{
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component;
const u8 op2 = inst_cream->op2;
const u32 rm_val = RM;
const u32 rn_val = RN;
s32 lo_result = 0;
s32 hi_result = 0;
// UADD16
if (op2 == 0x00) {
lo_result = (rn_val & 0xFFFF) + (rm_val & 0xFFFF);
hi_result = ((rn_val >> 16) & 0xFFFF) + ((rm_val >> 16) & 0xFFFF);
if (lo_result & 0xFFFF0000) {
cpu->Cpsr |= (1 << 16);
cpu->Cpsr |= (1 << 17);
} else {
cpu->Cpsr &= ~(1 << 16);
cpu->Cpsr &= ~(1 << 17);
}
if (hi_result & 0xFFFF0000) {
cpu->Cpsr |= (1 << 18);
cpu->Cpsr |= (1 << 19);
} else {
cpu->Cpsr &= ~(1 << 18);
cpu->Cpsr &= ~(1 << 19);
}
}
// UASX
else if (op2 == 0x01) {
lo_result = (rn_val & 0xFFFF) - ((rm_val >> 16) & 0xFFFF);
hi_result = ((rn_val >> 16) & 0xFFFF) + (rm_val & 0xFFFF);
if (lo_result >= 0) {
cpu->Cpsr |= (1 << 16);
cpu->Cpsr |= (1 << 17);
} else {
cpu->Cpsr &= ~(1 << 16);
cpu->Cpsr &= ~(1 << 17);
}
if (hi_result >= 0x10000) {
cpu->Cpsr |= (1 << 18);
cpu->Cpsr |= (1 << 19);
} else {
cpu->Cpsr &= ~(1 << 18);
cpu->Cpsr &= ~(1 << 19);
}
}
// USAX
else if (op2 == 0x02) {
lo_result = (rn_val & 0xFFFF) + ((rm_val >> 16) & 0xFFFF);
hi_result = ((rn_val >> 16) & 0xFFFF) - (rm_val & 0xFFFF);
if (lo_result >= 0x10000) {
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);
}
}
// USUB16
else if (op2 == 0x03) {
lo_result = (rn_val & 0xFFFF) - (rm_val & 0xFFFF);
hi_result = ((rn_val >> 16) & 0xFFFF) - ((rm_val >> 16) & 0xFFFF);
if ((lo_result & 0xFFFF0000) == 0) {
cpu->Cpsr |= (1 << 16);
cpu->Cpsr |= (1 << 17);
} else {
cpu->Cpsr &= ~(1 << 16);
cpu->Cpsr &= ~(1 << 17);
}
if ((hi_result & 0xFFFF0000) == 0) {
cpu->Cpsr |= (1 << 18);
cpu->Cpsr |= (1 << 19);
} else {
cpu->Cpsr &= ~(1 << 18);
cpu->Cpsr &= ~(1 << 19);
}
}
// UADD8
else if (op2 == 0x04) {
s16 sum1 = (rn_val & 0xFF) + (rm_val & 0xFF);
s16 sum2 = ((rn_val >> 8) & 0xFF) + ((rm_val >> 8) & 0xFF);
s16 sum3 = ((rn_val >> 16) & 0xFF) + ((rm_val >> 16) & 0xFF);
s16 sum4 = ((rn_val >> 24) & 0xFF) + ((rm_val >> 24) & 0xFF);
if (sum1 >= 0x100)
state->Cpsr |= (1 << 16);
else
state->Cpsr &= ~(1 << 16);
if (sum2 >= 0x100)
state->Cpsr |= (1 << 17);
else
state->Cpsr &= ~(1 << 17);
if (sum3 >= 0x100)
state->Cpsr |= (1 << 18);
else
state->Cpsr &= ~(1 << 18);
if (sum4 >= 0x100)
state->Cpsr |= (1 << 19);
else
state->Cpsr &= ~(1 << 19);
lo_result = ((sum1 & 0xFF) | (sum2 & 0xFF) << 8);
hi_result = ((sum3 & 0xFF) | (sum4 & 0xFF) << 8);
}
// USUB8
else if (op2 == 0x07) {
s16 diff1 = (rn_val & 0xFF) - (rm_val & 0xFF);
s16 diff2 = ((rn_val >> 8) & 0xFF) - ((rm_val >> 8) & 0xFF);
s16 diff3 = ((rn_val >> 16) & 0xFF) - ((rm_val >> 16) & 0xFF);
s16 diff4 = ((rn_val >> 24) & 0xFF) - ((rm_val >> 24) & 0xFF);
if (diff1 >= 0)
state->Cpsr |= (1 << 16);
else
state->Cpsr &= ~(1 << 16);
if (diff2 >= 0)
state->Cpsr |= (1 << 17);
else
state->Cpsr &= ~(1 << 17);
if (diff3 >= 0)
state->Cpsr |= (1 << 18);
else
state->Cpsr &= ~(1 << 18);
if (diff4 >= 0)
state->Cpsr |= (1 << 19);
else
state->Cpsr &= ~(1 << 19);
lo_result = (diff1 & 0xFF) | ((diff2 & 0xFF) << 8);
hi_result = (diff3 & 0xFF) | ((diff4 & 0xFF) << 8);
}
RD = (lo_result & 0xFFFF) | ((hi_result & 0xFFFF) << 16);
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(generic_arm_inst));
FETCH_INST;
GOTO_NEXT_INST;
}
UHADD8_INST:
UHADD16_INST:
@ -6414,9 +6616,6 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
GOTO_NEXT_INST;
}
USUB16_INST:
USUB8_INST:
USUBADDX_INST:
UXTAB16_INST:
UXTB16_INST:
{

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