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melonDS
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clarification

This commit is contained in:
Jaklyy 2024-06-08 16:15:02 -04:00
parent 3699768ac9
commit 659763f903
1 changed files with 8 additions and 8 deletions
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16
src/ARMInterpreter_LoadStore.cpp
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@ -117,7 +117,7 @@ namespace melonDS::ARMInterpreter
cpu->R[(cpu->CurInstr>>12) & 0xF] = val; \
}
// TODO: user mode
// TODO: user mode (note: ldrt w/ rd = 15 may be an undef instr)
#define A_LDR_POST \
u32 addr = cpu->R[(cpu->CurInstr>>16) & 0xF]; \
u32 val; bool dataabort = !cpu->DataRead32(addr, &val); \
@ -144,7 +144,7 @@ namespace melonDS::ARMInterpreter
if (((cpu->CurInstr>>12) & 0xF) == 15) cpu->JumpTo(val); \
else cpu->R[(cpu->CurInstr>>12) & 0xF] = val; \
// TODO: user mode
// TODO: user mode (note: ldrbt w/ rd = 15 may be an undef instr)
#define A_LDRB_POST \
u32 addr = cpu->R[(cpu->CurInstr>>16) & 0xF]; \
u32 val; bool dataabort = !cpu->DataRead8(addr, &val); \
@ -262,7 +262,7 @@ A_IMPLEMENT_WB_LDRSTR(LDRB)
if (r&1) { A_UNK(cpu); return; } /* checkme */ \
if (!cpu->DataRead32 (offset , &cpu->R[r ])) {cpu->AddCycles_CDI(); return;} \
u32 val; if (!cpu->DataRead32S(offset+4, &val)) {cpu->AddCycles_CDI(); return;} \
if (r == 14) A_UNK(cpu); /* hang??? */ \
if (r == 14) A_UNK(cpu); /* checkme */ \
else cpu->R[r+1] = val; \
cpu->AddCycles_CDI(); \
if (cpu->CurInstr & (1<<21)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset;
@ -274,7 +274,7 @@ A_IMPLEMENT_WB_LDRSTR(LDRB)
if (r&1) { A_UNK(cpu); return; } /* checkme */ \
if (!cpu->DataRead32 (addr , &cpu->R[r ])) {cpu->AddCycles_CDI(); return;} \
u32 val; if (!cpu->DataRead32S(addr+4, &val)) {cpu->AddCycles_CDI(); return;} \
if (r == 14) A_UNK(cpu); /*hang??? */ \
if (r == 14) A_UNK(cpu); /* checkme */ \
else cpu->R[r+1] = val; \
cpu->AddCycles_CDI(); \
cpu->R[(cpu->CurInstr>>16) & 0xF] += offset;
@ -327,7 +327,7 @@ A_IMPLEMENT_WB_LDRSTR(LDRB)
cpu->AddCycles_CDI(); \
if (dataabort) return; \
val = (s32)(s8)val; \
if (((cpu->CurInstr>>12) & 0xF) == 15) A_UNK(cpu); /* hang??? */ \
if (((cpu->CurInstr>>12) & 0xF) == 15) A_UNK(cpu); \
else cpu->R[(cpu->CurInstr>>12) & 0xF] = val; \
if (cpu->CurInstr & (1<<21)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset;
@ -337,7 +337,7 @@ A_IMPLEMENT_WB_LDRSTR(LDRB)
cpu->AddCycles_CDI(); \
if (dataabort) return; \
val = (s32)(s8)val; \
if (((cpu->CurInstr>>12) & 0xF) == 15) A_UNK(cpu); /* hang??? */ \
if (((cpu->CurInstr>>12) & 0xF) == 15) A_UNK(cpu); \
else cpu->R[(cpu->CurInstr>>12) & 0xF] = val; \
cpu->R[(cpu->CurInstr>>16) & 0xF] += offset;
@ -347,7 +347,7 @@ A_IMPLEMENT_WB_LDRSTR(LDRB)
cpu->AddCycles_CDI(); \
if (dataabort) return; \
val = (s32)(s16)val; \
if (((cpu->CurInstr>>12) & 0xF) == 15) A_UNK(cpu); \
if (((cpu->CurInstr>>12) & 0xF) == 15) A_UNK(cpu); /* checkme */ \
else cpu->R[(cpu->CurInstr>>12) & 0xF] = val; \
if (cpu->CurInstr & (1<<21)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset;
@ -357,7 +357,7 @@ A_IMPLEMENT_WB_LDRSTR(LDRB)
cpu->AddCycles_CDI(); \
if (dataabort) return; \
val = (s32)(s16)val; \
if (((cpu->CurInstr>>12) & 0xF) == 15) A_UNK(cpu); \
if (((cpu->CurInstr>>12) & 0xF) == 15) A_UNK(cpu); /* checkme */ \
else cpu->R[(cpu->CurInstr>>12) & 0xF] = val; \
cpu->R[(cpu->CurInstr>>16) & 0xF] += offset;