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melonDS
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simple thumb instructions (untested but probably right)

This commit is contained in:
Jaklyy 2024-06-05 14:32:12 -04:00
parent 7c3108e20f
commit 13ae96b4e3
1 changed files with 8 additions and 8 deletions
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16
src/ARMInterpreter_LoadStore.cpp
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@ -631,8 +631,8 @@ void T_LDR_REG(ARM* cpu)
u32 addr = cpu->R[(cpu->CurInstr >> 3) & 0x7] + cpu->R[(cpu->CurInstr >> 6) & 0x7];
u32 val;
cpu->DataRead32(addr, &val);
cpu->R[cpu->CurInstr & 0x7] = ROR(val, 8*(addr&0x3));
if (cpu->DataRead32(addr, &val))
cpu->R[cpu->CurInstr & 0x7] = ROR(val, 8*(addr&0x3));
cpu->AddCycles_CDI();
}
@ -657,8 +657,8 @@ void T_STRH_REG(ARM* cpu)
void T_LDRSB_REG(ARM* cpu)
{
u32 addr = cpu->R[(cpu->CurInstr >> 3) & 0x7] + cpu->R[(cpu->CurInstr >> 6) & 0x7];
cpu->DataRead8(addr, &cpu->R[cpu->CurInstr & 0x7]);
cpu->R[cpu->CurInstr & 0x7] = (s32)(s8)cpu->R[cpu->CurInstr & 0x7];
if (cpu->DataRead8(addr, &cpu->R[cpu->CurInstr & 0x7]))
cpu->R[cpu->CurInstr & 0x7] = (s32)(s8)cpu->R[cpu->CurInstr & 0x7];
cpu->AddCycles_CDI();
}
@ -674,8 +674,8 @@ void T_LDRH_REG(ARM* cpu)
void T_LDRSH_REG(ARM* cpu)
{
u32 addr = cpu->R[(cpu->CurInstr >> 3) & 0x7] + cpu->R[(cpu->CurInstr >> 6) & 0x7];
cpu->DataRead16(addr, &cpu->R[cpu->CurInstr & 0x7]);
cpu->R[cpu->CurInstr & 0x7] = (s32)(s16)cpu->R[cpu->CurInstr & 0x7];
if (cpu->DataRead16(addr, &cpu->R[cpu->CurInstr & 0x7]))
cpu->R[cpu->CurInstr & 0x7] = (s32)(s16)cpu->R[cpu->CurInstr & 0x7];
cpu->AddCycles_CDI();
}
@ -696,8 +696,8 @@ void T_LDR_IMM(ARM* cpu)
offset += cpu->R[(cpu->CurInstr >> 3) & 0x7];
u32 val;
cpu->DataRead32(offset, &val);
cpu->R[cpu->CurInstr & 0x7] = ROR(val, 8*(offset&0x3));
if (cpu->DataRead32(offset, &val))
cpu->R[cpu->CurInstr & 0x7] = ROR(val, 8*(offset&0x3));
cpu->AddCycles_CDI();
}