mirrors/rpcs3
1
0
Fork 0
mirror of https://github.com/RPCS3/rpcs3.git synced 2025-04-21 20:15:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

cellSyncRwmWrite

Browse source
This commit is contained in:
Nekotekina 2014-08-08 01:34:56 +04:00
parent 6568a94b0e
commit 8169a8e4bb
2 changed files with 84 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

89
rpcs3/Emu/SysCalls/Modules/cellSync.cpp
View file

@ -413,7 +413,7 @@ s32 cellSyncRwmRead(mem_ptr_t<CellSyncRwm> rwm, u32 buffer_addr)
s32 cellSyncRwmTryRead(mem_ptr_t<CellSyncRwm> rwm, u32 buffer_addr)
{
cellSync->Todo("cellSyncRwmTryRead(rwm_addr=0x%x, buffer_addr=0x%x)", rwm.GetAddr(), buffer_addr);
cellSync->Log("cellSyncRwmTryRead(rwm_addr=0x%x, buffer_addr=0x%x)", rwm.GetAddr(), buffer_addr);
if (!rwm || !buffer_addr)
{
@ -424,13 +424,44 @@ s32 cellSyncRwmTryRead(mem_ptr_t<CellSyncRwm> rwm, u32 buffer_addr)
return CELL_SYNC_ERROR_ALIGN;
}
// TODO
while (true)
{
const u32 old_data = rwm->m_data();
CellSyncRwm new_rwm;
new_rwm.m_data() = old_data;
if (new_rwm.m_writers.ToBE())
{
return CELL_SYNC_ERROR_BUSY;
}
new_rwm.m_readers++;
if (InterlockedCompareExchange(&rwm->m_data(), new_rwm.m_data(), old_data) == old_data) break;
}
memcpy(Memory + buffer_addr, Memory + (u64)rwm->m_addr, (u32)rwm->m_size);
while (true)
{
const u32 old_data = rwm->m_data();
CellSyncRwm new_rwm;
new_rwm.m_data() = old_data;
if (!new_rwm.m_readers.ToBE())
{
cellSync->Error("cellSyncRwmRead(rwm_addr=0x%x): m_readers == 0 (m_writers=%d)", rwm.GetAddr(), (u16)new_rwm.m_writers);
return CELL_SYNC_ERROR_ABORT;
}
new_rwm.m_readers--;
if (InterlockedCompareExchange(&rwm->m_data(), new_rwm.m_data(), old_data) == old_data) break;
}
return CELL_OK;
}
s32 cellSyncRwmWrite(mem_ptr_t<CellSyncRwm> rwm, u32 buffer_addr)
{
cellSync->Todo("cellSyncRwmWrite(rwm_addr=0x%x, buffer_addr=0x%x)", rwm.GetAddr(), buffer_addr);
cellSync->Log("cellSyncRwmWrite(rwm_addr=0x%x, buffer_addr=0x%x)", rwm.GetAddr(), buffer_addr);
if (!rwm || !buffer_addr)
{
@ -441,13 +472,51 @@ s32 cellSyncRwmWrite(mem_ptr_t<CellSyncRwm> rwm, u32 buffer_addr)
return CELL_SYNC_ERROR_ALIGN;
}
// TODO
// prx: atomically compare second u16 (m_writers) with 0, repeat if not 0, set 1, sync
while (true)
{
const u32 old_data = rwm->m_data();
CellSyncRwm new_rwm;
new_rwm.m_data() = old_data;
if (new_rwm.m_writers.ToBE())
{
std::this_thread::sleep_for(std::chrono::milliseconds(1)); // hack
if (Emu.IsStopped())
{
cellSync->Warning("cellSyncRwmWrite(rwm_addr=0x%x) aborted (I)", rwm.GetAddr());
return CELL_OK;
}
continue;
}
new_rwm.m_writers = 1;
if (InterlockedCompareExchange(&rwm->m_data(), new_rwm.m_data(), old_data) == old_data) break;
}
// prx: wait until m_readers == 0
while (rwm->m_readers.ToBE())
{
std::this_thread::sleep_for(std::chrono::milliseconds(1)); // hack
if (Emu.IsStopped())
{
cellSync->Warning("cellSyncRwmWrite(rwm_addr=0x%x) aborted (II)", rwm.GetAddr());
return CELL_OK;
}
}
// prx: copy data from buffer_addr
memcpy(Memory + (u64)rwm->m_addr, Memory + buffer_addr, (u32)rwm->m_size);
// prx: sync and zeroize m_readers and m_writers
InterlockedCompareExchange(&rwm->m_data(), 0, 0);
rwm->m_data() = 0;
return CELL_OK;
}
s32 cellSyncRwmTryWrite(mem_ptr_t<CellSyncRwm> rwm, u32 buffer_addr)
{
cellSync->Todo("cellSyncRwmTryWrite(rwm_addr=0x%x, buffer_addr=0x%x)", rwm.GetAddr(), buffer_addr);
cellSync->Log("cellSyncRwmTryWrite(rwm_addr=0x%x, buffer_addr=0x%x)", rwm.GetAddr(), buffer_addr);
if (!rwm || !buffer_addr)
{
@ -458,7 +527,15 @@ s32 cellSyncRwmTryWrite(mem_ptr_t<CellSyncRwm> rwm, u32 buffer_addr)
return CELL_SYNC_ERROR_ALIGN;
}
// TODO
// prx: compare m_readers | m_writers with 0, return busy if not zero, set m_writers to 1
if (InterlockedCompareExchange(&rwm->m_data(), se32(1), 0) != 0) return CELL_SYNC_ERROR_BUSY;
// prx: copy data from buffer_addr
memcpy(Memory + (u64)rwm->m_addr, Memory + buffer_addr, (u32)rwm->m_size);
// prx: sync and zeroize m_readers and m_writers
InterlockedCompareExchange(&rwm->m_data(), 0, 0);
rwm->m_data() = 0;
return CELL_OK;
}

2
rpcs3/Emu/SysCalls/Modules/cellSync.h
View file

@ -68,7 +68,7 @@ struct CellSyncRwm
};
};
static_assert(sizeof(CellSyncRwm) == 16, "CellSyncBarrier: wrong size");
static_assert(sizeof(CellSyncRwm) == 16, "CellSyncRwm: wrong size");
struct CellSyncQueue
{