mirror of
https://github.com/citra-emu/citra.git
synced 2024-12-19 03:01:06 +00:00
Merge pull request #36 from bunnei/fix-memory-unaligned-reads
Fix memory unaligned reads
This commit is contained in:
commit
90aaab1df0
@ -24,7 +24,7 @@ public:
|
||||
* @return Port name of service
|
||||
*/
|
||||
const char *GetPortName() const {
|
||||
return "Ufs:";
|
||||
return "fs:USER";
|
||||
}
|
||||
};
|
||||
|
||||
|
@ -224,27 +224,39 @@ u32 MapBlock_HeapGSP(u32 size, u32 operation, u32 permissions) {
|
||||
}
|
||||
|
||||
u8 Read8(const u32 addr) {
|
||||
u8 _var = 0;
|
||||
Read<u8>(_var, addr);
|
||||
return (u8)_var;
|
||||
u8 data = 0;
|
||||
Read<u8>(data, addr);
|
||||
return (u8)data;
|
||||
}
|
||||
|
||||
u16 Read16(const u32 addr) {
|
||||
u16_le _var = 0;
|
||||
Read<u16_le>(_var, addr);
|
||||
return (u16)_var;
|
||||
u16_le data = 0;
|
||||
Read<u16_le>(data, addr);
|
||||
|
||||
// Check for 16-bit unaligned memory reads...
|
||||
if (addr & 1) {
|
||||
// TODO(bunnei): Implement 16-bit unaligned memory reads
|
||||
ERROR_LOG(MEMMAP, "16-bit unaligned memory reads are not implemented!");
|
||||
}
|
||||
|
||||
return (u16)data;
|
||||
}
|
||||
|
||||
u32 Read32(const u32 addr) {
|
||||
u32_le _var = 0;
|
||||
Read<u32_le>(_var, addr);
|
||||
return _var;
|
||||
}
|
||||
u32_le data = 0;
|
||||
Read<u32_le>(data, addr);
|
||||
|
||||
u64 Read64(const u32 addr) {
|
||||
u64_le _var = 0;
|
||||
Read<u64_le>(_var, addr);
|
||||
return _var;
|
||||
// Check for 32-bit unaligned memory reads...
|
||||
if (addr & 3) {
|
||||
// ARM allows for unaligned memory reads, however older ARM architectures read out memory
|
||||
// from unaligned addresses in a shifted way. Our ARM CPU core (SkyEye) corrects for this,
|
||||
// so therefore expects the memory to be read out in this manner.
|
||||
// TODO(bunnei): Determine if this is necessary - perhaps it is OK to remove this from both
|
||||
// SkyEye and here?
|
||||
int shift = (addr & 3) * 8;
|
||||
data = (data << shift) | (data >> (32 - shift));
|
||||
}
|
||||
return (u32)data;
|
||||
}
|
||||
|
||||
u32 Read8_ZX(const u32 addr) {
|
||||
|
Loading…
Reference in New Issue
Block a user