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#include <stdint.h>
#include <features.h>
hidden void *__fdpic_fixup(void *map, uintptr_t *a, uintptr_t *z)
{
/* If map is a null pointer, the program was loaded by a
* non-FDPIC-aware ELF loader, and fixups are not needed,
* but the value for the GOT pointer is. */
if (!map) return (void *)z[-1];
struct {
unsigned short version, nsegs;
struct fdpic_loadseg {
uintptr_t addr, p_vaddr, p_memsz;
} segs[];
} *lm = map;
int nsegs = lm->nsegs, rseg = 0, vseg = 0;
for (;;) {
while (*a-lm->segs[rseg].p_vaddr >= lm->segs[rseg].p_memsz)
if (++rseg == nsegs) rseg = 0;
uintptr_t *r = (uintptr_t *)
(*a + lm->segs[rseg].addr - lm->segs[rseg].p_vaddr);
if (++a == z) return r;
while (*r-lm->segs[vseg].p_vaddr >= lm->segs[vseg].p_memsz)
if (++vseg == nsegs) vseg = 0;
*r += lm->segs[vseg].addr - lm->segs[vseg].p_vaddr;
}
}
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