1#include <elf.h>
2#include <link.h>
3#include "libc.h"
4
5#define AUX_CNT 38
6
7static int static_dl_iterate_phdr(int(*callback)(struct dl_phdr_info *info, size_t size, void *data), void *data)
8{
9	unsigned char *p;
10	ElfW(Phdr) *phdr, *tls_phdr=0;
11	size_t base = 0;
12	size_t n;
13	struct dl_phdr_info info;
14	size_t i, aux[AUX_CNT];
15
16	for (i=0; libc.auxv[i]; i+=2)
17		if (libc.auxv[i]<AUX_CNT) aux[libc.auxv[i]] = libc.auxv[i+1];
18
19	for (p=(void *)aux[AT_PHDR],n=aux[AT_PHNUM]; n; n--,p+=aux[AT_PHENT]) {
20		phdr = (void *)p;
21		if (phdr->p_type == PT_PHDR)
22			base = aux[AT_PHDR] - phdr->p_vaddr;
23		if (phdr->p_type == PT_TLS)
24			tls_phdr = phdr;
25	}
26	info.dlpi_addr  = base;
27	info.dlpi_name  = "/proc/self/exe";
28	info.dlpi_phdr  = (void *)aux[AT_PHDR];
29	info.dlpi_phnum = aux[AT_PHNUM];
30	info.dlpi_adds  = 0;
31	info.dlpi_subs  = 0;
32	if (tls_phdr) {
33		info.dlpi_tls_modid = 1;
34		info.dlpi_tls_data = (void *)(base + tls_phdr->p_vaddr);
35	} else {
36		info.dlpi_tls_modid = 0;
37		info.dlpi_tls_data = 0;
38	}
39	return (callback)(&info, sizeof (info), data);
40}
41
42weak_alias(static_dl_iterate_phdr, dl_iterate_phdr);
43