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| author | gameblabla | 2019-07-18 02:19:07 +0200 |
|---|---|---|
| committer | gameblabla | 2019-07-18 02:19:07 +0200 |
| commit | 112dddf5f26989d55b257f51bdcb9236bc7c1de0 (patch) | |
| tree | f5677af5934a832db62c55f0f53b82e420575ab2 /libpcsxcore/psxbios.c | |
| parent | 3f28b64fb1baeedec76a150ee40eaec0b9095d92 (diff) | |
| download | pcsx_rearmed-112dddf5f26989d55b257f51bdcb9236bc7c1de0.tar.gz pcsx_rearmed-112dddf5f26989d55b257f51bdcb9236bc7c1de0.tar.bz2 pcsx_rearmed-112dddf5f26989d55b257f51bdcb9236bc7c1de0.zip | |
psxbios: Add checks for memmove.
Always returns dst per documentation.
Diffstat (limited to 'libpcsxcore/psxbios.c')
| -rw-r--r-- | libpcsxcore/psxbios.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/libpcsxcore/psxbios.c b/libpcsxcore/psxbios.c index 97c7951..399df9a 100644 --- a/libpcsxcore/psxbios.c +++ b/libpcsxcore/psxbios.c @@ -824,7 +824,12 @@ void psxBios_memset() { // 0x2b void psxBios_memmove() { // 0x2c char *p1 = (char *)Ra0, *p2 = (char *)Ra1; - + v0 = a0; + if (a0 == 0 || a2 > 0x7FFFFFFF) + { + pc0 = ra; + return; + } if (p2 <= p1 && p2 + a2 > p1) { a2++; // BUG: copy one more byte here p1 += a2; @@ -833,8 +838,7 @@ void psxBios_memmove() { // 0x2c } else { while ((s32)a2-- > 0) *p1++ = *p2++; } - - v0 = a0; pc0 = ra; + pc0 = ra; } void psxBios_memcmp() { // 0x2d |