artemist/yuzu
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

dyncom: Implement UQADD8, UQADD16, UQSUB8, UQSUB16, UQASX, and UQSAX.

Browse source
This commit is contained in:
Lioncash 2014-12-27 17:24:34 -05:00
parent 60523113a9
commit af69b0840b
3 changed files with 102 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

105
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
View file

@ -3249,12 +3249,44 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(blx_1_thumb)(unsigned int tinst, int index)
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQADD16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQADD8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uqaddsubx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQADDSUBX"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQSUB16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQSUB8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uqsubaddx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQSUBADDX"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd8)(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(uqadd16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(uqaddsubx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub8)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub16)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(uqsubaddx)(unsigned int inst, int index)
{
return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
}
ARM_INST_PTR INTERPRETER_TRANSLATE(usad8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USAD8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(usada8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USADA8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(usat)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USAT"); }
@ -6876,12 +6908,69 @@ unsigned InterpreterMainLoop(ARMul_State* state)
goto DISPATCH;
}
UQADD16_INST:
UQADD8_INST:
UQADD16_INST:
UQADDSUBX_INST:
UQSUB16_INST:
UQSUB8_INST:
UQSUB16_INST:
UQSUBADDX_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 u8 op2 = inst_cream->op2;
const u32 rm_val = RM;
const u32 rn_val = RN;
u16 lo_val = 0;
u16 hi_val = 0;
// UQADD16
if (op2 == 0x00) {
lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, rm_val & 0xFFFF);
hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
}
// UQASX
else if (op2 == 0x01) {
lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
}
// UQSAX
else if (op2 == 0x02) {
lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
}
// UQSUB16
else if (op2 == 0x03) {
lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, rm_val & 0xFFFF);
hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
}
// UQADD8
else if (op2 == 0x04) {
lo_val = ARMul_UnsignedSaturatedAdd8(rn_val, rm_val) |
ARMul_UnsignedSaturatedAdd8(rn_val >> 8, rm_val >> 8) << 8;
hi_val = ARMul_UnsignedSaturatedAdd8(rn_val >> 16, rm_val >> 16) |
ARMul_UnsignedSaturatedAdd8(rn_val >> 24, rm_val >> 24) << 8;
}
// UQSUB8
else {
lo_val = ARMul_UnsignedSaturatedSub8(rn_val, rm_val) |
ARMul_UnsignedSaturatedSub8(rn_val >> 8, rm_val >> 8) << 8;
hi_val = ARMul_UnsignedSaturatedSub8(rn_val >> 16, rm_val >> 16) |
ARMul_UnsignedSaturatedSub8(rn_val >> 24, rm_val >> 24) << 8;
}
RD = ((lo_val & 0xFFFF) | hi_val << 16);
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(generic_arm_inst));
FETCH_INST;
GOTO_NEXT_INST;
}
USAD8_INST:
USADA8_INST:
USAT_INST:

5
src/core/arm/skyeye_common/armdefs.h
View file

@ -790,6 +790,11 @@ extern void ARMul_FixSPSR(ARMul_State*, ARMword, ARMword);
extern void ARMul_ConsolePrint(ARMul_State*, const char*, ...);
extern void ARMul_SelectProcessor(ARMul_State*, unsigned);
extern u8 ARMul_UnsignedSaturatedAdd8(u8, u8);
extern u16 ARMul_UnsignedSaturatedAdd16(u16, u16);
extern u8 ARMul_UnsignedSaturatedSub8(u8, u8);
extern u16 ARMul_UnsignedSaturatedSub16(u16, u16);
#define DIFF_LOG 0
#define SAVE_LOG 0

4
src/core/arm/skyeye_common/armemu.h
View file

@ -603,10 +603,6 @@ extern void ARMul_MSRCpsr (ARMul_State *, ARMword, ARMword);
extern void ARMul_SubOverflow (ARMul_State *, ARMword, ARMword, ARMword);
extern void ARMul_AddOverflow (ARMul_State *, ARMword, ARMword, ARMword);
extern void ARMul_AddOverflowQ(ARMul_State*, ARMword, ARMword);
extern u8 ARMul_UnsignedSaturatedAdd8(u8, u8);
extern u16 ARMul_UnsignedSaturatedAdd16(u16, u16);
extern u8 ARMul_UnsignedSaturatedSub8(u8, u8);
extern u16 ARMul_UnsignedSaturatedSub16(u16, u16);
extern void ARMul_SubCarry (ARMul_State *, ARMword, ARMword, ARMword);
extern void ARMul_AddCarry (ARMul_State *, ARMword, ARMword, ARMword);
extern tdstate ARMul_ThumbDecode (ARMul_State *, ARMword, ARMword, ARMword *);