piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-24 06:39:58 -06:00
Code Issues Packages Projects Releases Wiki Activity

fix SMULWx/SMLAWx. fixes #78, finally

Browse Source
This commit is contained in:
StapleButter
2017-12-29 03:17:32 +01:00
parent 9336e15197
commit d50e7e4686
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/ARMInterpreter_ALU.cpp
View File

@ -895,7 +895,7 @@ void A_SMLAWy(ARM* cpu)
if (cpu->CurInstr & (1<<6)) rs >>= 16; if (cpu->CurInstr & (1<<6)) rs >>= 16;
else rs &= 0xFFFF; else rs &= 0xFFFF;
u32 res_mul = ((s32)rm * (s16)rs) >> 16; // CHECKME u32 res_mul = ((s64)(s32)rm * (s16)rs) >> 16;
u32 res = res_mul + rn; u32 res = res_mul + rn;
cpu->R[(cpu->CurInstr >> 16) & 0xF] = res; cpu->R[(cpu->CurInstr >> 16) & 0xF] = res;
@ -930,7 +930,7 @@ void A_SMULWy(ARM* cpu)
if (cpu->CurInstr & (1<<6)) rs >>= 16; if (cpu->CurInstr & (1<<6)) rs >>= 16;
else rs &= 0xFFFF; else rs &= 0xFFFF;
u32 res = ((s32)rm * (s16)rs) >> 16; // CHECKME u32 res = ((s64)(s32)rm * (s16)rs) >> 16;
cpu->R[(cpu->CurInstr >> 16) & 0xF] = res; cpu->R[(cpu->CurInstr >> 16) & 0xF] = res;
} }