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);
}
