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Fixed unaligned 16/32 bit reads.

This commit is contained in:
normmatt234 2013-03-28 15:27:45 +00:00
parent 14888b9fe8
commit 8c98ac97bc
1 changed files with 36 additions and 18 deletions
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54
src/gba/GBAinline.h
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@ -46,23 +46,24 @@ extern int cpuTotalTicks;
static inline u32 CPUReadMemory(u32 address)
{
#ifdef GBA_LOGGING
int shift;
u32 value;
u32 oldAddress = address;
#ifdef C_CORE
if(address & 3) {
if(systemVerbose & VERBOSE_UNALIGNED_MEMORY) {
log("Unaligned word read: %08x at %08x\n", address, armMode ?
armNextPC - 4 : armNextPC - 2);
}
shift = (address & 3) << 3;
address &= ~0x03;
}
#endif
u32 value;
switch(address >> 24) {
case 0:
if(reg[15].I >> 24) {
if(address < 0x4000) {
#ifdef GBA_LOGGING
if(systemVerbose & VERBOSE_ILLEGAL_READ) {
log("Illegal word read: %08x at %08x\n", address, armMode ?
log("Illegal word read from bios: %08x at %08x\n", address, armMode ?
armNextPC - 4 : armNextPC - 2);
}
#endif
@ -145,6 +146,7 @@ unreadable:
CPUReadHalfWordQuick(reg[15].I) << 16;
}
}
break;
}
if(address & 3) {
@ -168,6 +170,15 @@ unreadable:
#endif
#endif
}
#ifdef GBA_LOGGING
if(oldAddress & 3) {
if(systemVerbose & VERBOSE_UNALIGNED_MEMORY) {
log("Unaligned word read from: %08x at %08x (%08x)\n", oldAddress, armMode ?
armNextPC - 4 : armNextPC - 2, value);
}
}
#endif
return value;
}
@ -175,16 +186,14 @@ extern u32 myROM[];
static inline u32 CPUReadHalfWord(u32 address)
{
#ifdef GBA_LOGGING
if(address & 1) {
if(systemVerbose & VERBOSE_UNALIGNED_MEMORY) {
log("Unaligned halfword read: %08x at %08x\n", address, armMode ?
armNextPC - 4 : armNextPC - 2);
}
}
#endif
u32 value;
u32 oldAddress = address;
//#ifdef C_CORE
if(address & 1) {
address &= ~0x01;
}
//#endif
switch(address >> 24) {
case 0:
@ -192,7 +201,7 @@ static inline u32 CPUReadHalfWord(u32 address)
if(address < 0x4000) {
#ifdef GBA_LOGGING
if(systemVerbose & VERBOSE_ILLEGAL_READ) {
log("Illegal halfword read: %08x at %08x\n", address, armMode ?
log("Illegal halfword read from bios: %08x at %08x\n", address, armMode ?
armNextPC - 4 : armNextPC - 2);
}
#endif
@ -289,6 +298,15 @@ unreadable:
value = (value >> 8) | (value << 24);
}
#ifdef GBA_LOGGING
if(oldAddress & 1) {
if(systemVerbose & VERBOSE_UNALIGNED_MEMORY) {
log("Unaligned halfword read from: %08x at %08x (%08x)\n", oldAddress, armMode ?
armNextPC - 4 : armNextPC - 2, value);
}
}
#endif
return value;
}
@ -308,7 +326,7 @@ static inline u8 CPUReadByte(u32 address)
if(address < 0x4000) {
#ifdef GBA_LOGGING
if(systemVerbose & VERBOSE_ILLEGAL_READ) {
log("Illegal byte read: %08x at %08x\n", address, armMode ?
log("Illegal byte read from bios: %08x at %08x\n", address, armMode ?
armNextPC - 4 : armNextPC - 2);
}
#endif