RPCS3/rpcs3
1
0
Fork 0
mirror of https://github.com/RPCS3/rpcs3.git synced 2024-11-25 20:22:30 +01:00
Code Issues Releases Wiki Activity

PPU: improve LWARX/LDARX consistency

Browse Source
This commit is contained in:
Nekotekina 2018-04-28 20:09:35 +03:00
parent 753d8170d1
commit f4af3f2987
1 changed files with 36 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
rpcs3/Emu/Cell/PPUThread.cpp
View File

@ -934,22 +934,48 @@ static void ppu_trace(u64 addr)
LOG_NOTICE(PPU, "Trace: 0x%llx", addr);
}
template <typename T>
static T ppu_load_acquire_reservation(ppu_thread& ppu, u32 addr)
{
auto& data = vm::_ref<const atomic_be_t<T>>(addr);
ppu.raddr = addr;
// Do several attemps
for (uint i = 0; i < 5; i++)
{
ppu.rtime = vm::reservation_acquire(addr, sizeof(T));
_mm_lfence();
// Check LSB: atomic store may be in progress
if (LIKELY((ppu.rtime & 1) == 0))
{
ppu.rdata = data;
_mm_lfence();
if (LIKELY(vm::reservation_acquire(addr, sizeof(T)) == ppu.rtime))
{
return static_cast<T>(ppu.rdata);
}
}
busy_wait(300);
}
vm::reader_lock lock;
ppu.rtime = vm::reservation_acquire(addr, sizeof(T));
ppu.rdata = data;
return static_cast<T>(ppu.rdata);
}
extern u32 ppu_lwarx(ppu_thread& ppu, u32 addr)
{
ppu.rtime = vm::reservation_acquire(addr, sizeof(u32));
_mm_lfence();
ppu.raddr = addr;
ppu.rdata = vm::_ref<const atomic_be_t<u32>>(addr);
return static_cast<u32>(ppu.rdata);
return ppu_load_acquire_reservation<u32>(ppu, addr);
}
extern u64 ppu_ldarx(ppu_thread& ppu, u32 addr)
{
ppu.rtime = vm::reservation_acquire(addr, sizeof(u64));
_mm_lfence();
ppu.raddr = addr;
ppu.rdata = vm::_ref<const atomic_be_t<u64>>(addr);
return ppu.rdata;
return ppu_load_acquire_reservation<u64>(ppu, addr);
}
extern bool ppu_stwcx(ppu_thread& ppu, u32 addr, u32 reg_value)