/* Run time dynamic linker.
- Copyright (C) 1995-2012 Free Software Foundation, Inc.
+ Copyright (C) 1995-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
# error "sysdeps/MACHINE/dl-machine.h fails to define RTLD_START"
#endif
-#ifndef VALIDX
-# define VALIDX(tag) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM \
- + DT_EXTRANUM + DT_VALTAGIDX (tag))
-#endif
-#ifndef ADDRIDX
-# define ADDRIDX(tag) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM \
- + DT_EXTRANUM + DT_VALNUM + DT_ADDRTAGIDX (tag))
-#endif
-
/* This is the second half of _dl_start (below). It can be inlined safely
under DONT_USE_BOOTSTRAP_MAP, where it is careful not to make any GOT
references. When the tools don't permit us to avoid using a GOT entry
if (__builtin_expect (err_str != NULL, 0))
{
_dl_error_printf ("\
-ERROR: ld.so: object '%s' from %s cannot be preloaded: ignored.\n",
- fname, where);
+ERROR: ld.so: object '%s' from %s cannot be preloaded (%s): ignored.\n",
+ fname, where, err_str);
/* No need to call free, this is still before
the libc's malloc is used. */
}
_dl_random = NULL;
}
+#include "setup-vdso.h"
/* The library search path. */
static const char *library_path attribute_relro;
/* Now the map for the main executable is available. */
main_map = GL(dl_ns)[LM_ID_BASE]._ns_loaded;
- if (GL(dl_rtld_map).l_info[DT_SONAME] != NULL
+ if (__builtin_expect (mode, normal) == normal
+ && GL(dl_rtld_map).l_info[DT_SONAME] != NULL
&& main_map->l_info[DT_SONAME] != NULL
&& strcmp ((const char *) D_PTR (&GL(dl_rtld_map), l_info[DT_STRTAB])
+ GL(dl_rtld_map).l_info[DT_SONAME]->d_un.d_val,
case AT_ENTRY:
av->a_un.a_val = *user_entry;
break;
+ case AT_EXECFN:
+ av->a_un.a_val = (uintptr_t) _dl_argv[0];
+ break;
}
#endif
}
}
struct link_map **first_preload = &GL(dl_rtld_map).l_next;
-#if defined NEED_DL_SYSINFO || defined NEED_DL_SYSINFO_DSO
/* Set up the data structures for the system-supplied DSO early,
so they can influence _dl_init_paths. */
- if (GLRO(dl_sysinfo_dso) != NULL)
- {
- /* Do an abridged version of the work _dl_map_object_from_fd would do
- to map in the object. It's already mapped and prelinked (and
- better be, since it's read-only and so we couldn't relocate it).
- We just want our data structures to describe it as if we had just
- mapped and relocated it normally. */
- struct link_map *l = _dl_new_object ((char *) "", "", lt_library, NULL,
- 0, LM_ID_BASE);
- if (__builtin_expect (l != NULL, 1))
- {
- static ElfW(Dyn) dyn_temp[DL_RO_DYN_TEMP_CNT] attribute_relro;
-
- l->l_phdr = ((const void *) GLRO(dl_sysinfo_dso)
- + GLRO(dl_sysinfo_dso)->e_phoff);
- l->l_phnum = GLRO(dl_sysinfo_dso)->e_phnum;
- for (uint_fast16_t i = 0; i < l->l_phnum; ++i)
- {
- const ElfW(Phdr) *const ph = &l->l_phdr[i];
- if (ph->p_type == PT_DYNAMIC)
- {
- l->l_ld = (void *) ph->p_vaddr;
- l->l_ldnum = ph->p_memsz / sizeof (ElfW(Dyn));
- }
- else if (ph->p_type == PT_LOAD)
- {
- if (! l->l_addr)
- l->l_addr = ph->p_vaddr;
- if (ph->p_vaddr + ph->p_memsz >= l->l_map_end)
- l->l_map_end = ph->p_vaddr + ph->p_memsz;
- if ((ph->p_flags & PF_X)
- && ph->p_vaddr + ph->p_memsz >= l->l_text_end)
- l->l_text_end = ph->p_vaddr + ph->p_memsz;
- }
- else
- /* There must be no TLS segment. */
- assert (ph->p_type != PT_TLS);
- }
- l->l_map_start = (ElfW(Addr)) GLRO(dl_sysinfo_dso);
- l->l_addr = l->l_map_start - l->l_addr;
- l->l_map_end += l->l_addr;
- l->l_text_end += l->l_addr;
- l->l_ld = (void *) ((ElfW(Addr)) l->l_ld + l->l_addr);
- elf_get_dynamic_info (l, dyn_temp);
- _dl_setup_hash (l);
- l->l_relocated = 1;
-
- /* The vDSO is always used. */
- l->l_used = 1;
-
- /* Initialize l_local_scope to contain just this map. This allows
- the use of dl_lookup_symbol_x to resolve symbols within the vdso.
- So we create a single entry list pointing to l_real as its only
- element */
- l->l_local_scope[0]->r_nlist = 1;
- l->l_local_scope[0]->r_list = &l->l_real;
-
- /* Now that we have the info handy, use the DSO image's soname
- so this object can be looked up by name. Note that we do not
- set l_name here. That field gives the file name of the DSO,
- and this DSO is not associated with any file. */
- if (l->l_info[DT_SONAME] != NULL)
- {
- /* Work around a kernel problem. The kernel cannot handle
- addresses in the vsyscall DSO pages in writev() calls. */
- const char *dsoname = ((char *) D_PTR (l, l_info[DT_STRTAB])
- + l->l_info[DT_SONAME]->d_un.d_val);
- size_t len = strlen (dsoname);
- char *copy = malloc (len);
- if (copy == NULL)
- _dl_fatal_printf ("out of memory\n");
- l->l_libname->name = l->l_name = memcpy (copy, dsoname, len);
- }
-
- /* Add the vDSO to the object list. */
- _dl_add_to_namespace_list (l, LM_ID_BASE);
-
- /* Rearrange the list so this DSO appears after rtld_map. */
- assert (l->l_next == NULL);
- assert (l->l_prev == main_map);
- GL(dl_rtld_map).l_next = l;
- l->l_prev = &GL(dl_rtld_map);
- first_preload = &l->l_next;
-
- /* We have a prelinked DSO preloaded by the system. */
- GLRO(dl_sysinfo_map) = l;
-# ifdef NEED_DL_SYSINFO
- if (GLRO(dl_sysinfo) == DL_SYSINFO_DEFAULT)
- GLRO(dl_sysinfo) = GLRO(dl_sysinfo_dso)->e_entry + l->l_addr;
-# endif
- }
- }
-#endif
+ setup_vdso (main_map, &first_preload);
#ifdef DL_SYSDEP_OSCHECK
DL_SYSDEP_OSCHECK (_dl_fatal_printf);
GL(dl_rtld_map).l_next = (i + 1 < main_map->l_searchlist.r_nlist
? main_map->l_searchlist.r_list[i + 1]
: NULL);
-#if defined NEED_DL_SYSINFO || defined NEED_DL_SYSINFO_DSO
+#ifdef NEED_DL_SYSINFO_DSO
if (GLRO(dl_sysinfo_map) != NULL
&& GL(dl_rtld_map).l_prev->l_next == GLRO(dl_sysinfo_map)
&& GL(dl_rtld_map).l_next != GLRO(dl_sysinfo_map))
if (_dl_name_match_p (GLRO(dl_trace_prelink), l))
GLRO(dl_trace_prelink_map) = l;
_dl_printf ("\t%s => %s (0x%0*Zx, 0x%0*Zx)",
- l->l_libname->name[0] ? l->l_libname->name
- : rtld_progname ?: "<main program>",
- l->l_name[0] ? l->l_name
- : rtld_progname ?: "<main program>",
+ DSO_FILENAME (l->l_libname->name),
+ DSO_FILENAME (l->l_name),
(int) sizeof l->l_map_start * 2,
(size_t) l->l_map_start,
(int) sizeof l->l_addr * 2,
if (dyn->d_tag == DT_NEEDED)
{
l = l->l_next;
-#if defined NEED_DL_SYSINFO || defined NEED_DL_SYSINFO_DSO
+#ifdef NEED_DL_SYSINFO_DSO
/* Skip the VDSO since it's not part of the list
of objects we brought in via DT_NEEDED entries. */
if (l == GLRO(dl_sysinfo_map))
first = 0;
}
- _dl_printf ("\t%s:\n",
- map->l_name[0] ? map->l_name : rtld_progname);
+ _dl_printf ("\t%s:\n", DSO_FILENAME (map->l_name));
while (1)
{
_dl_start_profile ();
}
-#ifndef NONTLS_INIT_TP
-# define NONTLS_INIT_TP do { } while (0)
-#endif
-
if (!was_tls_init_tp_called && GL(dl_tls_max_dtv_idx) > 0)
++GL(dl_tls_generation);
_dl_debug_state ();
LIBC_PROBE (init_complete, 2, LM_ID_BASE, r);
-#ifndef MAP_COPY
+#if defined USE_LDCONFIG && !defined MAP_COPY
/* We must munmap() the cache file. */
_dl_unload_cache ();
#endif
const char *errstring)
{
if (objname[0] == '\0')
- objname = rtld_progname ?: "<main program>";
+ objname = RTLD_PROGNAME;
_dl_error_printf ("%s (%s)\n", errstring, objname);
}
\f
print_missing_version (int errcode __attribute__ ((unused)),
const char *objname, const char *errstring)
{
- _dl_error_printf ("%s: %s: %s\n", rtld_progname ?: "<program name unknown>",
+ _dl_error_printf ("%s: %s: %s\n", RTLD_PROGNAME,
objname, errstring);
}
\f
projects / thirdparty / glibc.git / blobdiff