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SPU: optimize GETLLAR (TSX)

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Add an option "Accurate GETLLAR"
This commit is contained in:
Nekotekina 2018-06-02 13:45:28 +03:00
parent a5f4e6ecef
commit ec6d1fb1ba
2 changed files with 41 additions and 6 deletions
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46
rpcs3/Emu/Cell/SPUThread.cpp
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@ -1155,9 +1155,8 @@ bool SPUThread::process_mfc_cmd(spu_mfc_cmd args)
if (is_polling)
{
rtime = vm::reservation_acquire(raddr, 128);
_mm_lfence();
while (vm::reservation_acquire(raddr, 128) == rtime && rdata == data)
while (rdata == data && vm::reservation_acquire(raddr, 128) == rtime)
{
if (test(state, cpu_flag::stop))
{
@ -1170,7 +1169,26 @@ bool SPUThread::process_mfc_cmd(spu_mfc_cmd args)
if (LIKELY(g_use_rtm))
{
const u64 count = spu_getll_tx(raddr, rdata.data(), &rtime);
u64 count = 0;
if (g_cfg.core.spu_accurate_getllar)
{
count = spu_getll_tx(raddr, rdata.data(), &rtime);
}
if (count == 0)
{
for (++count;; count++, busy_wait(300))
{
rtime = vm::reservation_acquire(raddr, 128);
rdata = data;
if (LIKELY(vm::reservation_acquire(raddr, 128) == rtime))
{
break;
}
}
}
if (count > 9)
{
@ -1180,9 +1198,25 @@ bool SPUThread::process_mfc_cmd(spu_mfc_cmd args)
else
{
auto& res = vm::reservation_lock(raddr, 128);
rtime = res & ~1ull;
rdata = data;
res &= ~1ull;
if (g_cfg.core.spu_accurate_getllar)
{
vm::_ref<atomic_t<u32>>(raddr) += 0;
// Full lock (heavyweight)
// TODO: vm::check_addr
vm::writer_lock lock(1);
rtime = res & ~1ull;
rdata = data;
res &= ~1ull;
}
else
{
rtime = res & ~1ull;
rdata = data;
res &= ~1ull;
}
}
// Copy to LS