diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ARMInterpreter.cpp | 22 | ||||
| -rw-r--r-- | src/ARMInterpreter_ALU.cpp | 12 | ||||
| -rw-r--r-- | src/ARMInterpreter_LoadStore.cpp | 6 |
3 files changed, 30 insertions, 10 deletions
diff --git a/src/ARMInterpreter.cpp b/src/ARMInterpreter.cpp index 32b3a00..aa69816 100644 --- a/src/ARMInterpreter.cpp +++ b/src/ARMInterpreter.cpp @@ -32,14 +32,30 @@ namespace ARMInterpreter void A_UNK(ARM* cpu) { printf("undefined ARM%d instruction %08X @ %08X\n", cpu->Num?7:9, cpu->CurInstr, cpu->R[15]-8); - for (int i = 0; i < 16; i++) printf("R%d: %08X\n", i, cpu->R[i]); - NDS::Halt(); + //for (int i = 0; i < 16; i++) printf("R%d: %08X\n", i, cpu->R[i]); + //NDS::Halt(); + u32 oldcpsr = cpu->CPSR; + cpu->CPSR &= ~0xFF; + cpu->CPSR |= 0xDB; + cpu->UpdateMode(oldcpsr, cpu->CPSR); + + cpu->R_UND[2] = oldcpsr; + cpu->R[14] = cpu->R[15] - 4; + cpu->JumpTo(cpu->ExceptionBase + 0x04); } void T_UNK(ARM* cpu) { printf("undefined THUMB%d instruction %04X @ %08X\n", cpu->Num?7:9, cpu->CurInstr, cpu->R[15]-4); - NDS::Halt(); + //NDS::Halt(); + u32 oldcpsr = cpu->CPSR; + cpu->CPSR &= ~0xFF; + cpu->CPSR |= 0xDB; + cpu->UpdateMode(oldcpsr, cpu->CPSR); + + cpu->R_UND[2] = oldcpsr; + cpu->R[14] = cpu->R[15] - 2; + cpu->JumpTo(cpu->ExceptionBase + 0x04); } diff --git a/src/ARMInterpreter_ALU.cpp b/src/ARMInterpreter_ALU.cpp index 340adf4..e8bab68 100644 --- a/src/ARMInterpreter_ALU.cpp +++ b/src/ARMInterpreter_ALU.cpp @@ -865,7 +865,7 @@ void A_SMLAL(ARM* cpu) void A_SMLAxy(ARM* cpu) { - // TODO: ARM9 only + if (cpu->Num != 0) return A_UNK(cpu); u32 rm = cpu->R[cpu->CurInstr & 0xF]; u32 rs = cpu->R[(cpu->CurInstr >> 8) & 0xF]; @@ -886,7 +886,7 @@ void A_SMLAxy(ARM* cpu) void A_SMLAWy(ARM* cpu) { - // TODO: ARM9 only + if (cpu->Num != 0) return A_UNK(cpu); u32 rm = cpu->R[cpu->CurInstr & 0xF]; u32 rs = cpu->R[(cpu->CurInstr >> 8) & 0xF]; @@ -905,7 +905,7 @@ void A_SMLAWy(ARM* cpu) void A_SMULxy(ARM* cpu) { - // TODO: ARM9 only + if (cpu->Num != 0) return A_UNK(cpu); u32 rm = cpu->R[cpu->CurInstr & 0xF]; u32 rs = cpu->R[(cpu->CurInstr >> 8) & 0xF]; @@ -922,7 +922,7 @@ void A_SMULxy(ARM* cpu) void A_SMULWy(ARM* cpu) { - // TODO: ARM9 only + if (cpu->Num != 0) return A_UNK(cpu); u32 rm = cpu->R[cpu->CurInstr & 0xF]; u32 rs = cpu->R[(cpu->CurInstr >> 8) & 0xF]; @@ -937,7 +937,7 @@ void A_SMULWy(ARM* cpu) void A_SMLALxy(ARM* cpu) { - // TODO: ARM9 only + if (cpu->Num != 0) return A_UNK(cpu); u32 rm = cpu->R[cpu->CurInstr & 0xF]; u32 rs = cpu->R[(cpu->CurInstr >> 8) & 0xF]; @@ -962,7 +962,7 @@ void A_SMLALxy(ARM* cpu) void A_CLZ(ARM* cpu) { - // TODO: ARM9 only + if (cpu->Num != 0) return A_UNK(cpu); u32 val = cpu->R[cpu->CurInstr & 0xF]; diff --git a/src/ARMInterpreter_LoadStore.cpp b/src/ARMInterpreter_LoadStore.cpp index 16605ed..23e6b62 100644 --- a/src/ARMInterpreter_LoadStore.cpp +++ b/src/ARMInterpreter_LoadStore.cpp @@ -217,9 +217,10 @@ A_IMPLEMENT_WB_LDRSTR(LDRB) cpu->DataWrite16(addr, cpu->R[(cpu->CurInstr>>12) & 0xF]); \ cpu->R[(cpu->CurInstr>>16) & 0xF] += offset; \ -// TODO: CHECK LDRD/STRD TIMINGS!! also, ARM9-only +// TODO: CHECK LDRD/STRD TIMINGS!! #define A_LDRD \ + if (cpu->Num != 0) return A_UNK(cpu); \ offset += cpu->R[(cpu->CurInstr>>16) & 0xF]; \ if (cpu->CurInstr & (1<<21)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset; \ cpu->Cycles += 1; \ @@ -228,6 +229,7 @@ A_IMPLEMENT_WB_LDRSTR(LDRB) cpu->R[r+1] = cpu->DataRead32(offset+4); \ #define A_LDRD_POST \ + if (cpu->Num != 0) return A_UNK(cpu); \ u32 addr = cpu->R[(cpu->CurInstr>>16) & 0xF]; \ cpu->R[(cpu->CurInstr>>16) & 0xF] += offset; \ cpu->Cycles += 1; \ @@ -236,6 +238,7 @@ A_IMPLEMENT_WB_LDRSTR(LDRB) cpu->R[r+1] = cpu->DataRead32(addr+4); \ #define A_STRD \ + if (cpu->Num != 0) return A_UNK(cpu); \ offset += cpu->R[(cpu->CurInstr>>16) & 0xF]; \ if (cpu->CurInstr & (1<<21)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset; \ u32 r = (cpu->CurInstr>>12) & 0xF; \ @@ -243,6 +246,7 @@ A_IMPLEMENT_WB_LDRSTR(LDRB) cpu->DataWrite32(offset+4, cpu->R[r+1]); \ #define A_STRD_POST \ + if (cpu->Num != 0) return A_UNK(cpu); \ cpu->R[(cpu->CurInstr>>16) & 0xF] += offset; \ u32 r = (cpu->CurInstr>>12) & 0xF; \ cpu->DataWrite32(offset , cpu->R[r ]); \ |