PROTECTED int
tdep_get_elf_image (struct elf_image *ei, pid_t pid, unw_word_t ip,
unsigned long *segbase, unsigned long *mapoff,
char *path, size_t pathlen)
{
struct map_iterator mi;
int found = 0, rc;
unsigned long hi;
if (maps_init (&mi, pid) < 0)
return -1;
while (maps_next (&mi, segbase, &hi, mapoff))
if (ip >= *segbase && ip < hi)
{
found = 1;
break;
}
if (!found)
{
maps_close (&mi);
return -1;
}
if (path)
{
strncpy(path, mi.path, pathlen);
}
rc = elf_map_image (ei, mi.path);
maps_close (&mi);
return rc;
}
HIDDEN int
tdep_get_elf_image (struct elf_image *ei, pid_t pid, unw_word_t ip,
unsigned long *segbase, unsigned long *mapoff,
char *path, size_t pathlen)
{
struct load_module_desc lmd;
const char *path2;
if (pid != getpid ())
{
printf ("%s: remote case not implemented yet\n", __FUNCTION__);
return -UNW_ENOINFO;
}
if (!dlmodinfo (ip, &lmd, sizeof (lmd), NULL, 0, 0))
return -UNW_ENOINFO;
*segbase = lmd.text_base;
*mapoff = 0; /* XXX fix me? */
path2 = dlgetname (&lmd, sizeof (lmd), NULL, 0, 0);
if (!path2)
return -UNW_ENOINFO;
if (path)
{
strncpy(path, path2, pathlen);
path[pathlen - 1] = '\0';
if (strcmp(path, path2) != 0)
Debug(1, "buffer size (%d) not big enough to hold path\n", pathlen);
}
Debug(1, "segbase=%lx, mapoff=%lx, path=%s\n", *segbase, *mapoff, path);
return elf_map_image (ei, path);
}
HIDDEN int
tdep_get_elf_image (struct elf_image *ei, pid_t pid, unw_word_t ip,
unsigned long *segbase, unsigned long *mapoff)
{
struct load_module_desc lmd;
const char *path;
if (pid != getpid ())
{
printf ("%s: remote case not implemented yet\n", __FUNCTION__);
return -UNW_ENOINFO;
}
if (!dlmodinfo (ip, &lmd, sizeof (lmd), NULL, 0, 0))
return -UNW_ENOINFO;
*segbase = lmd.text_base;
*mapoff = 0; /* XXX fix me? */
path = dlgetname (&lmd, sizeof (lmd), NULL, 0, 0);
if (!path)
return -UNW_ENOINFO;
Debug(1, "segbase=%lx, mapoff=%lx, path=%s\n", *segbase, *mapoff, path);
return elf_map_image (ei, path);
}
static int elf_lib_init(struct mt_elf *mte, struct task *task, struct libref *libref)
{
if (elf_map_image(mte, &libref->mmap_addr))
return -1;
libref->entry = ARCH_ADDR_T(mte->entry_addr);
libref->mmap_offset = mte->loadbase;
libref->mmap_size = mte->loadsize;
libref->txt_vaddr = mte->txt_hdr.p_vaddr - mte->vstart + mte->bias;
libref->txt_size = mte->txt_hdr.p_filesz;
libref->txt_offset = mte->txt_hdr.p_offset - mte->loadbase;
libref->bias = mte->bias;
libref->eh_hdr_offset = mte->eh_hdr.p_offset - mte->loadbase;
libref->eh_hdr_vaddr = mte->eh_hdr.p_vaddr - mte->vstart + mte->bias;
libref->pltgot = mte->pltgot - mte->vstart + mte->bias;
libref->dyn = mte->dyn - mte->vstart + mte->bias;
#ifdef __arm__
if (mte->exidx_hdr.p_filesz) {
libref->exidx_data = libref->mmap_addr + mte->exidx_hdr.p_offset - mte->loadbase;
libref->exidx_len = mte->exidx_hdr.p_filesz;
}
#endif
if (mte->eh_hdr.p_filesz && mte->dyn) {
if (dwarf_get_unwind_table(task, libref) < 0)
return -1;
}
if (populate_symtab(mte, libref) < 0)
return -1;
return 0;
}
PROTECTED int
tdep_get_elf_image (struct elf_image *ei, pid_t pid, unw_word_t ip,
unsigned long *segbase, unsigned long *mapoff, char *path, size_t pathlen)
{
int mib[4], error, ret;
size_t len, len1;
char *buf, *bp, *eb;
struct kinfo_vmentry *kv;
len = 0;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_VMMAP;
mib[3] = pid;
error = sysctl(mib, 4, NULL, &len, NULL, 0);
if (error == -1) {
if (errno == ESRCH) {
mib[3] = get_pid_by_tid(pid);
if (mib[3] != -1)
error = sysctl(mib, 4, NULL, &len, NULL, 0);
if (error == -1)
return (-UNW_EUNSPEC);
} else
return (-UNW_EUNSPEC);
}
len1 = len * 4 / 3;
buf = get_mem(len1);
if (buf == NULL)
return (-UNW_EUNSPEC);
len = len1;
error = sysctl(mib, 4, buf, &len, NULL, 0);
if (error == -1) {
free_mem(buf, len1);
return (-UNW_EUNSPEC);
}
ret = -UNW_EUNSPEC;
for (bp = buf, eb = buf + len; bp < eb; bp += kv->kve_structsize) {
kv = (struct kinfo_vmentry *)(uintptr_t)bp;
if (ip < kv->kve_start || ip >= kv->kve_end)
continue;
if (kv->kve_type != KVME_TYPE_VNODE)
continue;
*segbase = kv->kve_start;
*mapoff = kv->kve_offset;
if (path)
{
strncpy(path, kv->kve_path, pathlen);
}
ret = elf_map_image (ei, kv->kve_path);
break;
}
free_mem(buf, len1);
return (ret);
}
static inline int
get_list_addr (unw_addr_space_t as, unw_word_t *dil_addr, void *arg,
int *countp)
{
unsigned long lo, hi, off;
struct UPT_info *ui = arg;
struct map_iterator mi;
char path[PATH_MAX];
unw_dyn_info_t *di;
unw_word_t res;
int count = 0;
maps_init (&mi, ui->pid);
while (maps_next (&mi, &lo, &hi, &off))
{
if (off)
continue;
if (ui->ei.image)
{
munmap (ui->ei.image, ui->ei.size);
ui->ei.image = NULL;
ui->ei.size = 0;
/* invalidate the cache: */
ui->di_cache.start_ip = ui->di_cache.end_ip = 0;
}
if (elf_map_image (&ui->ei, path) < 0)
/* ignore unmappable stuff like "/SYSV00001b58 (deleted)" */
continue;
Debug (16, "checking object %s\n", path);
di = _UPTi_find_unwind_table (ui, as, path, lo, off);
if (di)
{
res = _Uia64_find_dyn_list (as, di, arg);
if (res && count++ == 0)
{
Debug (12, "dyn_info_list_addr = 0x%lx\n", (long) res);
*dil_addr = res;
}
}
}
maps_close (&mi);
*countp = count;
return 0;
}