1 | #include <elf.h> |
2 | #include <link.h> |
3 | #include "libc.h" |
4 | |
5 | #define AUX_CNT38 38 |
6 | |
7 | static 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)Elf64_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_CNT38]; |
15 | |
16 | for (i=0; libc__libc.auxv[i]; i+=2) |
| 1 | Loop condition is false. Execution continues on line 19 | |
|
17 | if (libc__libc.auxv[i]<AUX_CNT38) aux[libc__libc.auxv[i]] = libc__libc.auxv[i+1]; |
18 | |
19 | for (p=(void *)aux[AT_PHDR3],n=aux[AT_PHNUM5]; n; n--,p+=aux[AT_PHENT4]) { |
| 2 | | Assigned value is garbage or undefined |
|
20 | phdr = (void *)p; |
21 | if (phdr->p_type == PT_PHDR6) |
22 | base = aux[AT_PHDR3] - phdr->p_vaddr; |
23 | if (phdr->p_type == PT_TLS7) |
24 | tls_phdr = phdr; |
25 | } |
26 | info.dlpi_addr = base; |
27 | info.dlpi_name = "/proc/self/exe"; |
28 | info.dlpi_phdr = (void *)aux[AT_PHDR3]; |
29 | info.dlpi_phnum = aux[AT_PHNUM5]; |
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 | |
42 | weak_alias(static_dl_iterate_phdr, dl_iterate_phdr)extern __typeof(static_dl_iterate_phdr) dl_iterate_phdr __attribute__ ((weak, alias("static_dl_iterate_phdr"))); |