piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-26 07:39:56 -06:00
Code Issues Packages Projects Releases Wiki Activity

moar shit

Browse Source
This commit is contained in:
StapleButter
2016-12-03 04:05:23 +01:00
parent ae6e9d96da
commit 6213245f3a
6 changed files with 295 additions and 71 deletions
Download Patch File Download Diff File Expand all files Collapse all files

158
ARMInterpreter_LoadStore.cpp
View File

@ -196,6 +196,164 @@ A_IMPLEMENT_WB_LDRSTR(LDRB)
offset += cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->Write16(offset, cpu->R[(cpu->CurInstr>>12) & 0xF]); \
if (cpu->CurInstr & (1<<24)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset; \
return C_N(2) + cpu->MemWaitstate(3, offset);
#define A_STRH_POST \
u32 addr = cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->Write16(addr, cpu->R[(cpu->CurInstr>>12) & 0xF]); \
cpu->R[(cpu->CurInstr>>16) & 0xF] += offset; \
return C_N(2) + cpu->MemWaitstate(3, addr);
// TODO: CHECK LDRD/STRD TIMINGS!!
#define A_LDRD \
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; \
cpu->R[r ] = cpu->Read32(offset ); \
cpu->R[r+1] = cpu->Read32(offset+4); \
return C_S(1) + C_N(1) + C_I(1) + cpu->MemWaitstate(3, offset);
#define A_LDRD_POST \
u32 addr = cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->R[(cpu->CurInstr>>16) & 0xF] += offset; \
u32 r = (cpu->CurInstr>>12) & 0xF; \
cpu->R[r ] = cpu->Read32(addr ); \
cpu->R[r+1] = cpu->Read32(addr+4); \
return C_S(1) + C_N(1) + C_I(1) + cpu->MemWaitstate(3, addr);
#define A_STRD \
offset += cpu->R[(cpu->CurInstr>>16) & 0xF]; \
if (cpu->CurInstr & (1<<24)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset; \
u32 r = (cpu->CurInstr>>12) & 0xF; \
cpu->Write32(offset , cpu->R[r ]); \
cpu->Write32(offset+4, cpu->R[r+1]); \
return C_N(2) + cpu->MemWaitstate(3, offset);
#define A_STRD_POST \
u32 addr = cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->R[(cpu->CurInstr>>16) & 0xF] += offset; \
u32 r = (cpu->CurInstr>>12) & 0xF; \
cpu->Write32(offset , cpu->R[r ]); \
cpu->Write32(offset+4, cpu->R[r+1]); \
return C_N(2) + cpu->MemWaitstate(3, addr);
#define A_LDRH \
offset += cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->R[(cpu->CurInstr>>12) & 0xF] = cpu->Read16(offset); \
if (cpu->CurInstr & (1<<24)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset; \
return C_N(2) + cpu->MemWaitstate(3, offset);
#define A_LDRH_POST \
u32 addr = cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->R[(cpu->CurInstr>>12) & 0xF] = cpu->Read16(addr); \
cpu->R[(cpu->CurInstr>>16) & 0xF] += offset; \
return C_N(2) + cpu->MemWaitstate(3, addr);
#define A_LDRSB \
offset += cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->R[(cpu->CurInstr>>12) & 0xF] = (s32)(s8)cpu->Read8(offset); \
if (cpu->CurInstr & (1<<24)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset; \
return C_N(2) + cpu->MemWaitstate(3, offset);
#define A_LDRSB_POST \
u32 addr = cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->R[(cpu->CurInstr>>12) & 0xF] = (s32)(s8)cpu->Read8(addr); \
cpu->R[(cpu->CurInstr>>16) & 0xF] += offset; \
return C_N(2) + cpu->MemWaitstate(3, addr);
#define A_LDRSH \
offset += cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->R[(cpu->CurInstr>>12) & 0xF] = (s32)(s16)cpu->Read16(offset); \
if (cpu->CurInstr & (1<<24)) cpu->R[(cpu->CurInstr>>16) & 0xF] = offset; \
return C_N(2) + cpu->MemWaitstate(3, offset);
#define A_LDRSH_POST \
u32 addr = cpu->R[(cpu->CurInstr>>16) & 0xF]; \
cpu->R[(cpu->CurInstr>>12) & 0xF] = (s32)(s16)cpu->Read16(addr); \
cpu->R[(cpu->CurInstr>>16) & 0xF] += offset; \
return C_N(2) + cpu->MemWaitstate(3, addr);
#define A_IMPLEMENT_HD_LDRSTR(x) \
\
s32 A_##x##_IMM(ARM* cpu) \
{ \
A_HD_CALC_OFFSET_IMM \
A_##x \
} \
\
s32 A_##x##_REG(ARM* cpu) \
{ \
A_HD_CALC_OFFSET_REG \
A_##x \
} \
s32 A_##x##_POST_IMM(ARM* cpu) \
{ \
A_HD_CALC_OFFSET_IMM \
A_##x##_POST \
} \
\
s32 A_##x##_POST_REG(ARM* cpu) \
{ \
A_HD_CALC_OFFSET_REG \
A_##x##_POST \
}
A_IMPLEMENT_HD_LDRSTR(STRH)
A_IMPLEMENT_HD_LDRSTR(LDRD)
A_IMPLEMENT_HD_LDRSTR(STRD)
A_IMPLEMENT_HD_LDRSTR(LDRH)
A_IMPLEMENT_HD_LDRSTR(LDRSB)
A_IMPLEMENT_HD_LDRSTR(LDRSH)
// ---- THUMB -----------------------
s32 T_LDR_PCREL(ARM* cpu)
{
u32 addr = cpu->R[15] + ((cpu->CurInstr & 0xFF) << 2);
cpu->R[(cpu->CurInstr >> 8) & 0x7] = cpu->Read32(addr);
return C_S(1) + C_N(1) + C_I(1) + cpu->MemWaitstate(3, addr);
}
s32 T_STR_REG(ARM* cpu)
{
u32 addr = cpu->R[(cpu->CurInstr >> 3) & 0x7] + cpu->R[(cpu->CurInstr >> 6) & 0x7];
cpu->Write32(addr, cpu->R[cpu->CurInstr & 0x7]);
return C_N(2) + cpu->MemWaitstate(3, addr);
}
s32 T_STRB_REG(ARM* cpu)
{
u32 addr = cpu->R[(cpu->CurInstr >> 3) & 0x7] + cpu->R[(cpu->CurInstr >> 6) & 0x7];
cpu->Write8(addr, cpu->R[cpu->CurInstr & 0x7]);
return C_N(2) + cpu->MemWaitstate(3, addr);
}
s32 T_LDR_REG(ARM* cpu)
{
u32 addr = cpu->R[(cpu->CurInstr >> 3) & 0x7] + cpu->R[(cpu->CurInstr >> 6) & 0x7];
cpu->R[cpu->CurInstr & 0x7] = cpu->Read32(addr);
return C_S(1) + C_N(1) + C_I(1) + cpu->MemWaitstate(3, addr);
}
s32 T_LDRB_REG(ARM* cpu)
{
u32 addr = cpu->R[(cpu->CurInstr >> 3) & 0x7] + cpu->R[(cpu->CurInstr >> 6) & 0x7];
cpu->R[cpu->CurInstr & 0x7] = cpu->Read8(addr);
return C_S(1) + C_N(1) + C_I(1) + cpu->MemWaitstate(3, addr);
}
}