libstubs.cpp

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/*
 * Pavel Kirienko, 2014 <pavel.kirienko@gmail.com>
 * Standard library stubs
 */
 
#include <cstdlib>
#include <unistd.h>
#include <sys/types.h>
 
#if __GNUC__
# pragma GCC diagnostic ignored "-Wmissing-declarations"
#endif
 
void* __dso_handle;
 
void* operator new(std::size_t)
{
    std::abort();
    return reinterpret_cast<void*>(0xFFFFFFFF);
}
 
void* operator new[](std::size_t)
{
    std::abort();
    return reinterpret_cast<void*>(0xFFFFFFFF);
}
 
void operator delete(void*)
{
    std::abort();
}
 
void operator delete[](void*)
{
    std::abort();
}
 
namespace __gnu_cxx
{
 
void __verbose_terminate_handler()
{
    std::abort();
}
 
}
 
/*
 * libstdc++ stubs
 */
extern "C"
{
 
int __aeabi_atexit(void*, void(*)(void*), void*)
{
    return 0;
}
 
__extension__ typedef int __guard __attribute__((mode (__DI__)));
 
void __cxa_atexit(void(*)(void *), void*, void*)
{
}
 
int __cxa_guard_acquire(__guard* g)
{
    return !*g;
}
 
void __cxa_guard_release (__guard* g)
{
    *g = 1;
}
 
void __cxa_guard_abort (__guard*)
{
}
 
void __cxa_pure_virtual()
{
    std::abort();
}
 
}
 
/*
 * stdio
 */
extern "C"
{
 
__attribute__((used))
void abort()
{
    while (true) { }
}
 
int _read_r(struct _reent*, int, char*, int)
{
    return -1;
}
 
int _lseek_r(struct _reent*, int, int, int)
{
    return -1;
}
 
int _write_r(struct _reent*, int, char*, int)
{
    return -1;
}
 
int _close_r(struct _reent*, int)
{
    return -1;
}
 
__attribute__((used))
caddr_t _sbrk_r(struct _reent*, int)
{
    return 0;
}
 
int _fstat_r(struct _reent*, int, struct stat*)
{
    return -1;
}
 
int _isatty_r(struct _reent*, int)
{
    return -1;
}
 
void _exit(int)
{
    abort();
}
 
pid_t _getpid(void)
{
    return 1;
}
 
void _kill(pid_t)
{
}
 
}