ShuriZma
/
desmume
mirror of https://github.com/TASEmulators/desmume.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Reduce code required for some flag calculations in two opcode's. (Shouldn't break things but best too do more testing before adding to release branch).

This commit is contained in:
normmatt234 2008-12-31 11:24:55 +00:00
parent 462b1fd1cd
commit ed782533b8
2 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
desmume/src/arm_instructions.cpp
View File

@ -1162,8 +1162,8 @@ TEMPLATE static u32 FASTCALL OP_ADC_IMM_VAL()
}\
cpu->CPSR.bits.N = BIT31(cpu->R[REG_POS(i,12)]);\
cpu->CPSR.bits.Z = (cpu->R[REG_POS(i,12)]==0);\
cpu->CPSR.bits.C = UNSIGNED_OVERFLOW(shift_op, (u32) cpu->CPSR.bits.C, tmp) | UNSIGNED_OVERFLOW(v, tmp, cpu->R[REG_POS(i,12)]);\
cpu->CPSR.bits.V = SIGNED_OVERFLOW(shift_op, (u32) cpu->CPSR.bits.C, tmp) | SIGNED_OVERFLOW(v, tmp, cpu->R[REG_POS(i,12)]);\
cpu->CPSR.bits.C = !UNSIGNED_UNDERFLOW(tmp, cpu->CPSR.bits.C, cpu->R[REG_POS(i,12)]); \
cpu->CPSR.bits.V = SIGNED_UNDERFLOW(tmp, cpu->CPSR.bits.C, cpu->R[REG_POS(i,12)]); \
return a; \
}

4
desmume/src/thumb_instructions.cpp
View File

@ -334,8 +334,8 @@ TEMPLATE static u32 FASTCALL OP_ADC_REG()
cpu->CPSR.bits.N = BIT31(res);
cpu->CPSR.bits.Z = res == 0;
cpu->CPSR.bits.C = UNSIGNED_OVERFLOW(b, (u32) cpu->CPSR.bits.C, tmp) | UNSIGNED_OVERFLOW(tmp, a, res);
cpu->CPSR.bits.V = SIGNED_OVERFLOW(b, (u32) cpu->CPSR.bits.C, tmp) | SIGNED_OVERFLOW(tmp, a, res);
cpu->CPSR.bits.C = !UNSIGNED_UNDERFLOW(a, b, res);
cpu->CPSR.bits.V = SIGNED_UNDERFLOW(a, b, res);
return 3;
}