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Merge pull request #379 from lioncash/sh

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dyncom: Implement SHADD8/SHADD16/SHSUB8/SHSUB16/SHASX/SHSAX
This commit is contained in:
bunnei 2015-01-01 20:43:04 -05:00
commit fa4cc502e7
1 changed files with 110 additions and 8 deletions
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118
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
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@ -2252,13 +2252,48 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(sel)(unsigned int inst, int index)
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(setend)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SETEND"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(shadd16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SHADD16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(shadd8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SHADD8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(shaddsubx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SHADDSUBX"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(shsub16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SHSUB16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(shsub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SHSUB8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(shsubaddx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SHSUBADDX"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(shadd8)(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(shadd16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(shadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(shaddsubx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(shadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(shsub8)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(shadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(shsub16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(shadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(shsubaddx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(shadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smla)(unsigned int inst, int index)
{
arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(smla_inst));
@ -5229,12 +5264,79 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
SETEND_INST:
SHADD16_INST:
SHADD8_INST:
SHADD16_INST:
SHADDSUBX_INST:
SHSUB16_INST:
SHSUB8_INST:
SHSUB16_INST:
SHSUBADDX_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;
if (op2 == 0x00 || op2 == 0x01 || op2 == 0x02 || op2 == 0x03) {
s32 lo_result = 0;
s32 hi_result = 0;
// SHADD16
if (op2 == 0x00) {
lo_result = ((s16)(rn_val & 0xFFFF) + (s16)(rm_val & 0xFFFF)) >> 1;
hi_result = ((s16)((rn_val >> 16) & 0xFFFF) + (s16)((rm_val >> 16) & 0xFFFF)) >> 1;
}
// SHASX
else if (op2 == 0x01) {
lo_result = ((s16)(rn_val & 0xFFFF) - (s16)((rm_val >> 16) & 0xFFFF)) >> 1;
hi_result = ((s16)((rn_val >> 16) & 0xFFFF) + (s16)(rm_val & 0xFFFF)) >> 1;
}
// SHSAX
else if (op2 == 0x02) {
lo_result = ((s16)(rn_val & 0xFFFF) + (s16)((rm_val >> 16) & 0xFFFF)) >> 1;
hi_result = ((s16)((rn_val >> 16) & 0xFFFF) - (s16)(rm_val & 0xFFFF)) >> 1;
}
// SHSUB16
else if (op2 == 0x03) {
lo_result = ((s16)(rn_val & 0xFFFF) - (s16)(rm_val & 0xFFFF)) >> 1;
hi_result = ((s16)((rn_val >> 16) & 0xFFFF) - (s16)((rm_val >> 16) & 0xFFFF)) >> 1;
}
RD = ((lo_result & 0xFFFF) | ((hi_result & 0xFFFF) << 16));
}
else if (op2 == 0x04 || op2 == 0x07) {
s16 lo_val1, lo_val2;
s16 hi_val1, hi_val2;
// SHADD8
if (op2 == 0x04) {
lo_val1 = ((s8)(rn_val & 0xFF) + (s8)(rm_val & 0xFF)) >> 1;
lo_val2 = ((s8)((rn_val >> 8) & 0xFF) + (s8)((rm_val >> 8) & 0xFF)) >> 1;
hi_val1 = ((s8)((rn_val >> 16) & 0xFF) + (s8)((rm_val >> 16) & 0xFF)) >> 1;
hi_val2 = ((s8)((rn_val >> 24) & 0xFF) + (s8)((rm_val >> 24) & 0xFF)) >> 1;
}
// SHSUB8
else {
lo_val1 = ((s8)(rn_val & 0xFF) - (s8)(rm_val & 0xFF)) >> 1;
lo_val2 = ((s8)((rn_val >> 8) & 0xFF) - (s8)((rm_val >> 8) & 0xFF)) >> 1;
hi_val1 = ((s8)((rn_val >> 16) & 0xFF) - (s8)((rm_val >> 16) & 0xFF)) >> 1;
hi_val2 = ((s8)((rn_val >> 24) & 0xFF) - (s8)((rm_val >> 24) & 0xFF)) >> 1;
}
RD = (lo_val1 & 0xFF) | ((lo_val2 & 0xFF) << 8) | ((hi_val1 & 0xFF) << 16) | ((hi_val2 & 0xFF) << 24);
}
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(generic_arm_inst));
FETCH_INST;
GOTO_NEXT_INST;
}
SMLA_INST:
{
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {