| 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)Elf32_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"))); |