N-archive/suyu
1
0
Fork 0
mirror of https://git.suyu.dev/suyu/suyu.git synced 2024-12-27 19:00:58 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

dyncom: Move over SASX/SSAX/SADD16/SSUB16

Browse source
This commit is contained in:
Lioncash 2014-12-21 01:58:03 -05:00
parent 0f696037f6
commit c6f27055c9
1 changed files with 102 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

109
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
View file

@ -1019,6 +1019,15 @@ typedef struct _arm_inst {
char component[0];
} arm_inst;
typedef struct generic_arm_inst {
u32 Ra;
u32 Rm;
u32 Rn;
u32 Rd;
u8 op1;
u8 op2;
} generic_arm_inst;
typedef struct _adc_inst {
unsigned int I;
unsigned int S;
@ -2469,9 +2478,29 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(rsc)(unsigned int inst, int index)
}
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(sadd16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SADD16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(sadd8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SADD8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(saddsubx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SADDSUBX"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(sadd16)(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->Rm = BITS(inst, 0, 3);
inst_cream->Rn = BITS(inst, 16, 19);
inst_cream->Rd = BITS(inst, 12, 15);
inst_cream->op1 = BITS(inst, 20, 21);
inst_cream->op2 = BITS(inst, 5, 7);
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(saddsubx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(sadd16)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(sbc)(unsigned int inst, int index)
{
arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(sbc_inst));
@ -2637,9 +2666,15 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(smusd)(unsigned int inst, int index) { UNI
ARM_INST_PTR INTERPRETER_TRANSLATE(srs)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SRS"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(ssat)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SSAT"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(ssat16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SSAT16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(ssub16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SSUB16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(ssub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SSUB8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(ssubaddx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("SSUBADDX"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(ssub16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(sadd16)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(ssubaddx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(sadd16)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(stc)(unsigned int inst, int index)
{
arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(stc_inst));
@ -5626,9 +5661,71 @@ unsigned InterpreterMainLoop(ARMul_State* state)
FETCH_INST;
GOTO_NEXT_INST;
}
SADD16_INST:
SADD8_INST:
SADD16_INST:
SADDSUBX_INST:
SSUBADDX_INST:
SSUB16_INST:
{
INC_ICOUNTER;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component;
const s16 rn_lo = (RN & 0xFFFF);
const s16 rn_hi = ((RN >> 16) & 0xFFFF);
const s16 rm_lo = (RM & 0xFFFF);
const s16 rm_hi = ((RM >> 16) & 0xFFFF);
s32 lo_result = 0;
s32 hi_result = 0;
// SADD16
if (inst_cream->op2 == 0x00) {
lo_result = (rn_lo + rm_lo);
hi_result = (rn_hi + rm_hi);
}
// SASX
else if (inst_cream->op2 == 0x01) {
lo_result = (rn_lo - rm_hi);
hi_result = (rn_hi + rm_lo);
}
// SSAX
else if (inst_cream->op2 == 0x02) {
lo_result = (rn_lo + rm_hi);
hi_result = (rn_hi - rm_lo);
}
// SSUB16
else if (inst_cream->op2 == 0x03) {
lo_result = (rn_lo - rm_lo);
hi_result = (rn_hi - rm_hi);
}
RD = (lo_result & 0xFFFF) | ((hi_result & 0xFFFF) << 16);
if (lo_result >= 0) {
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);
}
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(generic_arm_inst));
FETCH_INST;
GOTO_NEXT_INST;
}
SBC_INST:
{
INC_ICOUNTER;
@ -5851,9 +5948,7 @@ unsigned InterpreterMainLoop(ARMul_State* state)
SRS_INST:
SSAT_INST:
SSAT16_INST:
SSUB16_INST:
SSUB8_INST:
SSUBADDX_INST:
STC_INST:
{
INC_ICOUNTER;