psxsdk/libpsx/src/setup.c

45 lines
833 B
C

#include <psx.h>
#include <stdio.h>
extern int __bss_start[];
extern int __bss_end[];
extern void *__ctor_list;
extern void *__ctor_end;
// Function to call static constructors (for C++, etc.)
static void call_ctors(void)
{
dprintf("Calling static constructors...\n");
void **p = &__ctor_end - 1;
for(--p; *p != NULL && (int)*p != -1 && p > &__ctor_list; p--)
{
dprintf("Constructor address = %x\n", (unsigned int)*p);
(*(void (**)())p)();
}
dprintf("Finished calling static constructors\n");
}
void psxsdk_setup()
{
unsigned int x;
printf("Initializing PSXSDK... \n");
dprintf("Clearing BSS space...\n");
// Clear BSS space
for(x = (unsigned int)__bss_start; x < (unsigned int)__bss_end; x++)
*((unsigned char*)x) = 0;
dprintf("BSS space cleared.\n");
// Call static constructors
call_ctors();
}