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TLS for ARMv7 threads

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This commit is contained in:
Nekotekina 2015-01-31 19:44:26 +03:00
parent 12d1f8202d
commit 61a5459ccb
9 changed files with 115 additions and 64 deletions
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69
rpcs3/Emu/ARMv7/ARMv7Thread.cpp
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@ -30,6 +30,69 @@ void ARMv7Context::fast_call(u32 addr)
return thread.FastCall(addr);
}
#define TLS_MAX 128
u32 g_armv7_tls_start;
std::array<std::atomic<u32>, TLS_MAX> g_armv7_tls_owners;
void armv7_init_tls()
{
g_armv7_tls_start = Emu.GetTLSMemsz() ? vm::cast(Memory.PSV.RAM.AllocAlign(Emu.GetTLSMemsz() * TLS_MAX, 4096)) : 0;
for (auto& v : g_armv7_tls_owners)
{
v.store(0, std::memory_order_relaxed);
}
}
u32 armv7_get_tls(u32 thread)
{
if (!Emu.GetTLSMemsz())
{
return 0;
}
for (u32 i = 0; i < TLS_MAX; i++)
{
if (g_armv7_tls_owners[i] == thread)
{
return g_armv7_tls_start + i * Emu.GetTLSMemsz(); // if already initialized, return TLS address
}
}
for (u32 i = 0; i < TLS_MAX; i++)
{
u32 old = 0;
if (g_armv7_tls_owners[i].compare_exchange_strong(old, thread))
{
const u32 addr = g_armv7_tls_start + i * Emu.GetTLSMemsz(); // get TLS address
memset(vm::get_ptr(addr), 0, Emu.GetTLSMemsz()); // fill TLS area with zeros
memcpy(vm::get_ptr(addr), vm::get_ptr(Emu.GetTLSAddr()), Emu.GetTLSFilesz()); // initialize from TLS image
return addr;
}
}
throw "Out of TLS memory";
}
void armv7_free_tls(u32 thread)
{
if (!Emu.GetTLSMemsz())
{
return;
}
for (auto& v : g_armv7_tls_owners)
{
u32 old = thread;
if (v.compare_exchange_strong(old, 0))
{
return;
}
}
}
ARMv7Thread::ARMv7Thread()
: CPUThread(CPU_THREAD_ARMv7)
, context(*this)
@ -39,6 +102,11 @@ ARMv7Thread::ARMv7Thread()
{
}
ARMv7Thread::~ARMv7Thread()
{
armv7_free_tls(GetId());
}
void ARMv7Thread::InitRegs()
{
memset(context.GPR, 0, sizeof(context.GPR[0]) * 15);
@ -47,6 +115,7 @@ void ARMv7Thread::InitRegs()
context.ISET = Thumb;
context.ITSTATE.IT = 0;
context.SP = m_stack_addr + m_stack_size;
context.TLS = armv7_get_tls(GetId());
}
void ARMv7Thread::InitStack()