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#include <stdint.h>
#include <stdlib.h>
#include <arch/ppc.H>
void* operator new(size_t s)
{
return malloc(s);
};
void* operator new[](size_t s)
{
return malloc(s);
};
void* operator new(size_t s, void *place)
{
return place;
}
void* operator new[](size_t s, void *place)
{
return place;
}
void operator delete(void* p)
{
return free(p);
};
void operator delete[](void* p)
{
return free(p);
};
extern "C" int __cxa_guard_acquire(volatile uint64_t* gv)
{
// States:
// 0 -> uninitialized
// 1 -> locked
// 2 -> unlocked and initialized
uint32_t v = __sync_val_compare_and_swap((volatile uint32_t*)gv, 0, 1);
if (v == 0)
return 1;
if (v == 2)
return 0;
// Wait for peer thread to perform initialization (state 2).
while(2 != *(volatile uint32_t*)gv);
// Instruction barrier to ensure value is set before later loads execute.
isync();
return 0;
}
extern "C" void __cxa_guard_release(volatile uint64_t* gv)
{
// Memory barrier to ensure all preceeding writes have completed before
// releasing guard.
lwsync();
(*(volatile uint32_t*)gv) = 2;
return;
}
extern "C" int __cxa_atexit(void (*)(void*), void*, void*)
{
return 0;
}
extern "C" void __cxa_pure_virtual()
{
// TODO: Add better code for invalid pure virtual call.
while(1);
}
void* __dso_handle = (void*) &__dso_handle;
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