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armemu: Fix SMUAD, SMUSD, and SMLAD

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Wrong values were being multiplied together.
This commit is contained in:
Lioncash 2014-12-16 02:03:48 -05:00
parent 0f9e3baf39
commit d5bcddb77c
1 changed files with 3 additions and 3 deletions
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6
src/core/arm/interpreter/armemu.cpp
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@ -6243,16 +6243,16 @@ L_stm_s_takeabort:
// SMUAD
if ((instr & 0xf0d0) == 0xf010) {
state->Reg[rd_idx] = (rn_lo * rn_hi) + (rm_lo * rm_hi);
state->Reg[rd_idx] = (rn_lo * rm_lo) + (rn_hi * rm_hi);
}
// SMUSD
else if ((instr & 0xf0d0) == 0xf050) {
state->Reg[rd_idx] = (rn_lo * rn_hi) - (rm_lo * rm_hi);
state->Reg[rd_idx] = (rn_lo * rm_lo) - (rn_hi * rm_hi);
}
// SMLAD
else {
const u8 ra_idx = BITS(12, 15);
state->Reg[rd_idx] = (rn_lo * rn_hi) + (rm_lo * rm_hi) + (s32)state->Reg[ra_idx];
state->Reg[rd_idx] = (rn_lo * rm_lo) + (rn_hi * rm_hi) + (s32)state->Reg[ra_idx];
}
return 1;
} else {