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

GBA I/O: Fix writing to out-of-bounds 8-bit I/O registers

This commit is contained in:
Jeffrey Pfau 2016-09-28 12:57:58 -07:00
parent 822c38bea8
commit 877dbd38ed
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/gba/io.c
View File

@ -567,6 +567,9 @@ void GBAIOWrite8(struct GBA* gba, uint32_t address, uint8_t value) {
}
return;
}
if (address > SIZE_IO) {
return;
}
uint16_t value16 = value << (8 * (address & 1));
value16 |= (gba->memory.io[(address & (SIZE_IO - 1)) >> 1]) & ~(0xFF << (8 * (address & 1)));
GBAIOWrite(gba, address & 0xFFFFFFFE, value16);