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#include <stdio.h>
#include <malloc.h>
#define load_gp() __asm__ volatile ( \
"la $gp, _gp;" )
extern int _end;
extern int main(int argc, const char* argv[]);
void _mem_init(void);
static void _call_global_ctors(void)
{
extern void (*__CTOR_LIST__[])(void);
// Constructors are called in reverse order of the list
int i;
for (i = (int)__CTOR_LIST__[0]; i >= 1; i--) {
// Each function handles one or more destructor (within
// file scope)
__CTOR_LIST__[i]();
}
}
static void _call_global_dtors(void)
{
extern void (*__DTOR_LIST__[])(void);
/* Destructors in forward order */
int i;
for (i = 0; i < (int)__DTOR_LIST__[0]; i++) {
/* Each function handles one or more destructor (within
* file scope) */
__DTOR_LIST__[i + 1]();
}
}
void _start(void) {
// Load GP address
load_gp();
// Mem init assembly function (clears BSS and InitHeap to _end which is
// not possible to do purely in C because the linker complains about
// relocation truncated to fit: R_MIPS_GPREL16 against `_end'
// Workaround is to do it in assembly because la pseudo-op doesn't use
// stupid gp relative addressing
_mem_init();
_call_global_ctors();
main(0, NULL);
_call_global_dtors();
}
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