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Merge pull request #394 from lioncash/sm

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dyncom: Implement SMLALD/SMLSLD
This commit is contained in:
bunnei
2015-01-02 22:17:44 -05:00
parent 031237e52c e0e54f55d7
commit b26fd93bbe
1 changed files with 72 additions and 3 deletions
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75
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
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@@ -972,6 +972,16 @@ typedef struct _smlal_inst {
unsigned int RdLo;
} smlal_inst;
typedef struct smlald_inst {
unsigned int RdLo;
unsigned int RdHi;
unsigned int Rm;
unsigned int Rn;
unsigned int swap;
unsigned int op1;
unsigned int op2;
} smlald_inst;
typedef struct _mla_inst {
unsigned int S;
unsigned int Rn;
@@ -2360,9 +2370,32 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(smlal)(unsigned int inst, int index)
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smlalxy)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMLALXY"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(smlald)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMLALD"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(smlaw)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMLAW"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(smlsld)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMLSLD"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(smlald)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(smlald_inst));
smlald_inst* const inst_cream = (smlald_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->Rm = BITS(inst, 8, 11);
inst_cream->Rn = BITS(inst, 0, 3);
inst_cream->RdLo = BITS(inst, 12, 15);
inst_cream->RdHi = BITS(inst, 16, 19);
inst_cream->swap = BIT(inst, 5);
inst_cream->op1 = BITS(inst, 20, 22);
inst_cream->op2 = BITS(inst, 5, 7);
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smlsld)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(smlald)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smmla)(unsigned int inst, int index)
{
@@ -5519,9 +5552,45 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
}
SMLALXY_INST:
SMLALD_INST:
SMLAW_INST:
SMLALD_INST:
SMLSLD_INST:
{
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
smlald_inst* const inst_cream = (smlald_inst*)inst_base->component;
const bool do_swap = (inst_cream->swap == 1);
const u32 rdlo_val = RDLO;
const u32 rdhi_val = RDHI;
const u32 rn_val = RN;
u32 rm_val = RM;
if (do_swap)
rm_val = (((rm_val & 0xFFFF) << 16) | (rm_val >> 16));
const s32 product1 = (s16)(rn_val & 0xFFFF) * (s16)(rm_val & 0xFFFF);
const s32 product2 = (s16)((rn_val >> 16) & 0xFFFF) * (s16)((rm_val >> 16) & 0xFFFF);
s64 result;
// SMLALD
if (BIT(inst_cream->op2, 1) == 0) {
result = (product1 + product2) + (s64)(rdlo_val | ((s64)rdhi_val << 32));
}
// SMLSLD
else {
result = (product1 - product2) + (s64)(rdlo_val | ((s64)rdhi_val << 32));
}
RDLO = (result & 0xFFFFFFFF);
RDHI = ((result >> 32) & 0xFFFFFFFF);
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(smlald_inst));
FETCH_INST;
GOTO_NEXT_INST;
}
SMMLA_INST:
SMMLS_INST: