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Fix MMX PMULLW

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fuel-pcbox 2025-03-24 20:03:23 -05:00
parent fe50caebf9
commit 9df6b8dcb7
2 changed files with 11 additions and 11 deletions
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4
CHANGELOG
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@ -24,8 +24,8 @@ Next
- Fixed direct input of half-width kana (maron2000)
- Fixed PC-98 INT 1Fh, AH=90h source and destination address (drachen6jp)
- Fixed unnecessary trailing backslash in path name (maron2000)
- Fixed SSE MOVSS, MOVHPS, UNPCKLPS, UNPCKHPS, and PSADBW instruction
implementations (fuel-pcbox)
- Fixed SSE MOVSS, MOVHPS, UNPCKLPS, UNPCKHPS, and PSADBW as well as
MMX PMULLW instruction implementations (fuel-pcbox)
2025.02.01
- Added new experimental dosbox.conf option that turns off the

18
src/cpu/core_normal/prefix_0f_mmx.h
View File

@ -1173,7 +1173,7 @@
}
CASE_0F_MMX(0x70) /* PSHUFW Pq,Qq,imm8 */
{
if (CPU_ArchitectureType<CPU_ARCHTYPE_PMMXSLOW) goto illegal_opcode;
if (CPU_ArchitectureType<CPU_ARCHTYPE_PENTIUMIII) goto illegal_opcode;
GetRM;
uint8_t imm8 = Fetchb();
MMX_reg* dest=lookupRMregMM[rm];
@ -1649,14 +1649,14 @@
GetEAa;
src.q = LoadMq(eaa);
}
uint32_t product0 = (uint32_t)dest->uw.w0 * (uint32_t)src.uw.w0;
uint32_t product1 = (uint32_t)dest->uw.w1 * (uint32_t)src.uw.w1;
uint32_t product2 = (uint32_t)dest->uw.w2 * (uint32_t)src.uw.w2;
uint32_t product3 = (uint32_t)dest->uw.w3 * (uint32_t)src.uw.w3;
dest->uw.w0 = (product0 & 0xffff);
dest->uw.w1 = (product1 & 0xffff);
dest->uw.w2 = (product2 & 0xffff);
dest->uw.w3 = (product3 & 0xffff);
int32_t product0 = (uint32_t)dest->sw.w0 * (uint32_t)src.sw.w0;
int32_t product1 = (uint32_t)dest->sw.w1 * (uint32_t)src.sw.w1;
int32_t product2 = (uint32_t)dest->sw.w2 * (uint32_t)src.sw.w2;
int32_t product3 = (uint32_t)dest->sw.w3 * (uint32_t)src.sw.w3;
dest->sw.w0 = product0;
dest->sw.w1 = product1;
dest->sw.w2 = product2;
dest->sw.w3 = product3;
break;
}
CASE_0F_MMX(0xd7)