citra-emu
/
citra
Archived
1
0
Fork 0
Code

Merge pull request #392 from lioncash/sm 

dyncom: Implement SMMLA/SMMUL/SMMLS
This commit is contained in:
bunnei 2015-01-02 21:47:53 -05:00
parent 3d9bf13439 64161bcb41
commit 3e230d6c9e
1 changed files with 64 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
View File

@ -2358,13 +2358,41 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(smlal)(unsigned int inst, int index)
inst_base->load_r15 = 1;
return inst_base;
}
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(smmla)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMMLA"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(smmls)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMMLS"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(smmul)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SMMUL"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(smmla)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(smlad_inst));
smlad_inst* const inst_cream = (smlad_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->m = BIT(inst, 5);
inst_cream->Ra = BITS(inst, 12, 15);
inst_cream->Rm = BITS(inst, 8, 11);
inst_cream->Rn = BITS(inst, 0, 3);
inst_cream->Rd = BITS(inst, 16, 19);
inst_cream->op1 = BITS(inst, 20, 22);
inst_cream->op2 = BITS(inst, 5, 7);
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smmls)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(smmla)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smmul)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(smmla)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(smul)(unsigned int inst, int index)
{
arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(smul_inst));
@ -5494,9 +5522,42 @@ unsigned InterpreterMainLoop(ARMul_State* state) {
SMLALD_INST:
SMLAW_INST:
SMLSLD_INST:
SMMLA_INST:
SMMLS_INST:
SMMUL_INST:
{
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
smlad_inst* const inst_cream = (smlad_inst*)inst_base->component;
const u32 rm_val = RM;
const u32 rn_val = RN;
const bool do_round = (inst_cream->m == 1);
// Assume SMMUL by default.
s64 result = (s64)(s32)rn_val * (s64)(s32)rm_val;
if (inst_cream->Ra != 15) {
const u32 ra_val = cpu->Reg[inst_cream->Ra];
// SMMLA, otherwise SMMLS
if (BIT(inst_cream->op2, 1) == 0)
result += ((s64)ra_val << 32);
else
result = ((s64)ra_val << 32) - result;
}
if (do_round)
result += 0x80000000;
RD = ((result >> 32) & 0xFFFFFFFF);
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(smlad_inst));
FETCH_INST;
GOTO_NEXT_INST;
}
SMUL_INST:
{