static int parse_thread_name (const char * name, const char ** next, int * next_len, const char ** nextnext) { const char * p = name; int pid = 0; if (*p == '/') p++; if (strpartcmp_static(p, "self")) { p += static_strlen("self"); if (*p && *p != '/') return -ENOENT; pid = get_cur_tid(); } else { for ( ; *p && *p != '/' ; p++) { if (*p < '0' || *p > '9') return -ENOENT; pid = pid * 10 + *p - '0'; } } if (next) { if (*(p++) == '/' && *p) { *next = p; if (next_len || nextnext) for ( ; *p && *p != '/' ; p++); if (next_len) *next_len = p - *next; if (nextnext) *nextnext = (*(p++) == '/' && *p) ? p : NULL; } else { *next = NULL; } } return pid; }
void _DkDebugAddMap (struct link_map * map) { const ElfW(Ehdr) * ehdr = (void *) map->l_map_start; int shdrsz = sizeof(ElfW(Shdr)) * ehdr->e_shnum; ElfW(Shdr) * shdr = NULL; ElfW(Phdr) * phdr = (void *) (map->l_map_start + ehdr->e_phoff); const ElfW(Phdr) * ph; int fd = ocall_open(map->l_name, O_RDONLY, 0); if (fd < 0) return; for (ph = phdr; ph < &phdr[ehdr->e_phnum]; ++ph) if (ph->p_type == PT_LOAD && ehdr->e_shoff >= ph->p_offset && ehdr->e_shoff < ph->p_offset + ph->p_filesz) { shdr = (void *) map->l_addr + ph->p_vaddr + (ehdr->e_shoff - ph->p_offset); break; } if (!shdr) { shdr = __alloca(shdrsz); unsigned long s = ALLOC_ALIGNDOWN(ehdr->e_shoff); unsigned long e = ALLOC_ALIGNUP(ehdr->e_shoff + shdrsz); void * umem; ocall_map_untrusted(fd, s, e - s, PROT_READ, &umem); memcpy(shdr, umem + ehdr->e_shoff - s, shdrsz); ocall_unmap_untrusted(umem, e - s); } ElfW(Shdr) * shdrend = (void *) shdr + shdrsz; int shstroff = shdr[ehdr->e_shstrndx].sh_offset; size_t shstrsz = shdr[ehdr->e_shstrndx].sh_size; const char * shstrtab = NULL; for (ph = phdr; ph < &phdr[ehdr->e_phnum]; ++ph) if (ph->p_type == PT_LOAD && shstroff >= ph->p_offset && shstroff < ph->p_offset + ph->p_filesz) { shstrtab = (void *) map->l_addr + ph->p_vaddr + (shstroff - ph->p_offset); break; } if (!shstrtab) { shstrtab = __alloca(shstrsz); unsigned long s = ALLOC_ALIGNDOWN(shstroff); unsigned long e = ALLOC_ALIGNUP(shstroff + shstrsz); void * umem; ocall_map_untrusted(fd, s, e - s, PROT_READ, &umem); memcpy((void *) shstrtab, umem + shstroff - s, shstrsz); ocall_unmap_untrusted(umem, e - s); } ocall_close(fd); ElfW(Addr) text_addr = 0; for (ElfW(Shdr) * s = shdr ; s < shdrend ; s++) if (strcmp_static(shstrtab + s->sh_name, ".text")) { text_addr = map->l_addr + s->sh_addr; break; } if (!text_addr) return; #define BUFFER_LENGTH 4096 char buffer[BUFFER_LENGTH], * ptr = buffer; snprintf(ptr, BUFFER_LENGTH - (ptr - buffer), "add-symbol-file %s 0x%016llx -readnow", map->l_name, text_addr); ptr += strlen(ptr); for (ElfW(Shdr) * s = shdr ; s < shdrend ; s++) { if (!s->sh_name || !s->sh_addr) continue; if (strcmp_static(shstrtab + s->sh_name, ".text")) continue; if (s->sh_type == SHT_NULL) continue; if (strpartcmp_static(shstrtab + s->sh_name, ".debug_")) continue; snprintf(ptr, BUFFER_LENGTH - (ptr - buffer), " -s %s 0x%016llx", shstrtab + s->sh_name, map->l_addr + s->sh_addr); ptr += strlen(ptr); } ocall_load_debug(buffer); }