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Implement cpu_thread::if_suspended

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Use it for opportunistic guaranteed GETLLAR execution (TSX-FA).
This commit is contained in:
Nekotekina 2020-10-17 14:55:31 +03:00
parent f5c575961f
commit adf50b7c4b
4 changed files with 61 additions and 6 deletions
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23
rpcs3/Emu/Cell/PPUThread.cpp
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@ -1189,10 +1189,27 @@ static T ppu_load_acquire_reservation(ppu_thread& ppu, u32 addr)
ppu.use_full_rdata = false;
}
for (u64 count = 0;; [&]()
for (u64 count = 0; count != umax; [&]()
{
if (ppu.state)
{
if (ppu.state & cpu_flag::pause)
{
verify(HERE), cpu_thread::if_suspended<-1>(&ppu, [&]()
{
// Guaranteed success
ppu.rtime = vm::reservation_acquire(addr, sizeof(T)) & -128;
mov_rdata(ppu.rdata, *vm::get_super_ptr<spu_rdata_t>(addr & -128));
});
// Exit loop
if ((ppu.rtime & 127) == 0)
{
count = -1;
return;
}
}
ppu.check_state();
}
else if (++count < 20) [[likely]]
@ -1275,6 +1292,10 @@ static T ppu_load_acquire_reservation(ppu_thread& ppu, u32 addr)
return static_cast<T>(rdata << data_off >> size_off);
}
}
be_t<u64> rdata;
std::memcpy(&rdata, &ppu.rdata[addr & 0x78], 8);
return static_cast<T>(rdata << data_off >> size_off);
}
extern u32 ppu_lwarx(ppu_thread& ppu, u32 addr)