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Merge pull request #434 from lioncash/sm

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dyncom: Move over SMLALXY
This commit is contained in:
bunnei 2015-01-07 09:51:06 -05:00
parent 5217e3f873 511e13f3e3
commit 5ae3a9657d
1 changed files with 56 additions and 1 deletions
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57
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
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@ -947,6 +947,15 @@ typedef struct _smla_inst {
unsigned int Rn;
} smla_inst;
typedef struct smlalxy_inst {
unsigned int x;
unsigned int y;
unsigned int RdLo;
unsigned int RdHi;
unsigned int Rm;
unsigned int Rn;
} smlalxy_inst;
typedef struct ssat_inst {
unsigned int Rn;
unsigned int Rd;
@ -2403,7 +2412,25 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(smlal)(unsigned int inst, int index)
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smlalxy)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMLALXY"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(smlalxy)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(smlalxy_inst));
smlalxy_inst* const inst_cream = (smlalxy_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->x = BIT(inst, 5);
inst_cream->y = BIT(inst, 6);
inst_cream->RdLo = BITS(inst, 12, 15);
inst_cream->RdHi = BITS(inst, 16, 19);
inst_cream->Rn = BITS(inst, 0, 4);
inst_cream->Rm = BITS(inst, 8, 11);
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smlaw)(unsigned int inst, int index)
{
@ -5686,6 +5713,34 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
SMLALXY_INST:
{
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
smlalxy_inst* const inst_cream = (smlalxy_inst*)inst_base->component;
u64 operand1 = RN;
u64 operand2 = RM;
if (inst_cream->x != 0)
operand1 >>= 16;
if (inst_cream->y != 0)
operand2 >>= 16;
operand1 &= 0xFFFF;
if (operand1 & 0x8000)
operand1 -= 65536;
operand2 &= 0xFFFF;
if (operand2 & 0x8000)
operand2 -= 65536;
u64 dest = ((u64)RDHI << 32 | RDLO) + (operand1 * operand2);
RDLO = (dest & 0xFFFFFFFF);
RDHI = ((dest >> 32) & 0xFFFFFFFF);
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(smlalxy_inst));
FETCH_INST;
GOTO_NEXT_INST;
}
SMLAW_INST:
{