/* Handle SVR4 shared libraries for GDB, the GNU Debugger.
- Copyright (C) 1990-2016 Free Software Foundation, Inc.
+ Copyright (C) 1990-2017 Free Software Foundation, Inc.
This file is part of GDB.
static void svr4_relocate_main_executable (void);
static void svr4_free_library_list (void *p_list);
-/* Link map info to include in an allocated so_list entry. */
-
-struct lm_info
- {
- /* Amount by which addresses in the binary should be relocated to
- match the inferior. The direct inferior value is L_ADDR_INFERIOR.
- When prelinking is involved and the prelink base address changes,
- we may need a different offset - the recomputed offset is in L_ADDR.
- It is commonly the same value. It is cached as we want to warn about
- the difference and compute it only once. L_ADDR is valid
- iff L_ADDR_P. */
- CORE_ADDR l_addr, l_addr_inferior;
- unsigned int l_addr_p : 1;
-
- /* The target location of lm. */
- CORE_ADDR lm_addr;
-
- /* Values read in from inferior's fields of the same name. */
- CORE_ADDR l_ld, l_next, l_prev, l_name;
- };
-
/* On SVR4 systems, a list of symbols in the dynamic linker where
GDB can try to place a breakpoint to monitor shared library
events.
return (svr4_same_1 (gdb->so_original_name, inferior->so_original_name));
}
-static struct lm_info *
+static lm_info_svr4 *
lm_info_read (CORE_ADDR lm_addr)
{
struct link_map_offsets *lmo = svr4_fetch_link_map_offsets ();
gdb_byte *lm;
- struct lm_info *lm_info;
+ lm_info_svr4 *lm_info;
struct cleanup *back_to;
lm = (gdb_byte *) xmalloc (lmo->link_map_size);
{
struct type *ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr;
- lm_info = XCNEW (struct lm_info);
+ lm_info = new lm_info_svr4;
lm_info->lm_addr = lm_addr;
lm_info->l_addr_inferior = extract_typed_address (&lm[lmo->l_addr_offset],
static CORE_ADDR
lm_addr_check (const struct so_list *so, bfd *abfd)
{
- if (!so->lm_info->l_addr_p)
+ lm_info_svr4 *li = (lm_info_svr4 *) so->lm_info;
+
+ if (!li->l_addr_p)
{
struct bfd_section *dyninfo_sect;
CORE_ADDR l_addr, l_dynaddr, dynaddr;
- l_addr = so->lm_info->l_addr_inferior;
+ l_addr = li->l_addr_inferior;
if (! abfd || ! has_lm_dynamic_from_link_map ())
goto set_addr;
- l_dynaddr = so->lm_info->l_ld;
+ l_dynaddr = li->l_ld;
dyninfo_sect = bfd_get_section_by_name (abfd, ".dynamic");
if (dyninfo_sect == NULL)
}
set_addr:
- so->lm_info->l_addr = l_addr;
- so->lm_info->l_addr_p = 1;
+ li->l_addr = l_addr;
+ li->l_addr_p = 1;
}
- return so->lm_info->l_addr;
+ return li->l_addr;
}
/* Per pspace SVR4 specific data. */
newobj = XCNEW (struct so_list);
old_chain = make_cleanup (xfree, newobj);
- newobj->lm_info = lm_info_read (ldsomap);
+ lm_info_svr4 *li = lm_info_read (ldsomap);
+ newobj->lm_info = li;
make_cleanup (xfree, newobj->lm_info);
- name_lm = newobj->lm_info ? newobj->lm_info->l_name : 0;
+ name_lm = li != NULL ? li->l_name : 0;
do_cleanups (old_chain);
return (name_lm >= vaddr && name_lm < vaddr + size);
static void
svr4_free_so (struct so_list *so)
{
- xfree (so->lm_info);
+ lm_info_svr4 *li = (lm_info_svr4 *) so->lm_info;
+
+ delete li;
}
/* Implement target_so_ops.clear_so. */
static void
svr4_clear_so (struct so_list *so)
{
- if (so->lm_info != NULL)
- so->lm_info->l_addr_p = 0;
+ lm_info_svr4 *li = (lm_info_svr4 *) so->lm_info;
+
+ if (li != NULL)
+ li->l_addr_p = 0;
}
/* Free so_list built so far (called via cleanup). */
newobj = XNEW (struct so_list);
memcpy (newobj, src, sizeof (struct so_list));
- newobj->lm_info = XNEW (struct lm_info);
- memcpy (newobj->lm_info, src->lm_info, sizeof (struct lm_info));
+ lm_info_svr4 *src_li = (lm_info_svr4 *) src->lm_info;
+ newobj->lm_info = new lm_info_svr4 (*src_li);
newobj->next = NULL;
*link = newobj;
struct so_list *new_elem;
new_elem = XCNEW (struct so_list);
- new_elem->lm_info = XCNEW (struct lm_info);
- new_elem->lm_info->lm_addr = *lmp;
- new_elem->lm_info->l_addr_inferior = *l_addrp;
- new_elem->lm_info->l_ld = *l_ldp;
+ lm_info_svr4 *li = new lm_info_svr4;
+ new_elem->lm_info = li;
+ li->lm_addr = *lmp;
+ li->l_addr_inferior = *l_addrp;
+ li->l_ld = *l_ldp;
strncpy (new_elem->so_name, name, sizeof (new_elem->so_name) - 1);
new_elem->so_name[sizeof (new_elem->so_name) - 1] = 0;
return NULL;
newobj = XCNEW (struct so_list);
-
- newobj->lm_info = XCNEW (struct lm_info);
+ lm_info_svr4 *li = new lm_info_svr4;
+ newobj->lm_info = li;
/* Nothing will ever check the other fields if we set l_addr_p. */
- newobj->lm_info->l_addr = info->debug_loader_offset;
- newobj->lm_info->l_addr_p = 1;
+ li->l_addr = info->debug_loader_offset;
+ li->l_addr_p = 1;
strncpy (newobj->so_name, info->debug_loader_name, SO_NAME_MAX_PATH_SIZE - 1);
newobj->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
newobj = XCNEW (struct so_list);
old_chain = make_cleanup_free_so (newobj);
- newobj->lm_info = lm_info_read (lm);
- if (newobj->lm_info == NULL)
+ lm_info_svr4 *li = lm_info_read (lm);
+ newobj->lm_info = li;
+ if (li == NULL)
{
do_cleanups (old_chain);
return 0;
}
- next_lm = newobj->lm_info->l_next;
+ next_lm = li->l_next;
- if (newobj->lm_info->l_prev != prev_lm)
+ if (li->l_prev != prev_lm)
{
warning (_("Corrupted shared library list: %s != %s"),
paddress (target_gdbarch (), prev_lm),
- paddress (target_gdbarch (), newobj->lm_info->l_prev));
+ paddress (target_gdbarch (), li->l_prev));
do_cleanups (old_chain);
return 0;
}
SVR4, it has no name. For others (Solaris 2.3 for example), it
does have a name, so we can no longer use a missing name to
decide when to ignore it. */
- if (ignore_first && newobj->lm_info->l_prev == 0)
+ if (ignore_first && li->l_prev == 0)
{
struct svr4_info *info = get_svr4_info ();
- first_l_name = newobj->lm_info->l_name;
- info->main_lm_addr = newobj->lm_info->lm_addr;
+ first_l_name = li->l_name;
+ info->main_lm_addr = li->lm_addr;
do_cleanups (old_chain);
continue;
}
/* Extract this shared object's name. */
- target_read_string (newobj->lm_info->l_name, &buffer,
- SO_NAME_MAX_PATH_SIZE - 1, &errcode);
+ target_read_string (li->l_name, &buffer, SO_NAME_MAX_PATH_SIZE - 1,
+ &errcode);
if (errcode != 0)
{
/* If this entry's l_name address matches that of the
inferior executable, then this is not a normal shared
object, but (most likely) a vDSO. In this case, silently
skip it; otherwise emit a warning. */
- if (first_l_name == 0 || newobj->lm_info->l_name != first_l_name)
+ if (first_l_name == 0 || li->l_name != first_l_name)
warning (_("Can't read pathname for load map: %s."),
safe_strerror (errcode));
do_cleanups (old_chain);
[...]
[ 9] .dynamic DYNAMIC ffffffffff700580 000580 0000f0
*/
- if (address_in_mem_range (so->lm_info->l_ld, &vsyscall_range))
+
+ lm_info_svr4 *li = (lm_info_svr4 *) so->lm_info;
+
+ if (address_in_mem_range (li->l_ld, &vsyscall_range))
{
*sop = so->next;
free_so (so);
/* Cause svr4_current_sos() to be run if it hasn't been already. */
if (info->main_lm_addr == 0)
- solib_add (NULL, 0, ¤t_target, auto_solib_add);
+ solib_add (NULL, 0, auto_solib_add);
/* svr4_current_sos() will set main_lm_addr for the main executable. */
if (objfile == symfile_objfile)
of shared libraries. */
for (so = master_so_list (); so; so = so->next)
if (so->objfile == objfile)
- return so->lm_info->lm_addr;
+ {
+ lm_info_svr4 *li = (lm_info_svr4 *) so->lm_info;
+
+ return li->lm_addr;
+ }
/* Not found! */
return 0;
/* Walk to the end of the list. */
for (tail = info->solib_list; tail->next != NULL; tail = tail->next)
/* Nothing. */;
- prev_lm = tail->lm_info->lm_addr;
+
+ lm_info_svr4 *li = (lm_info_svr4 *) tail->lm_info;
+ prev_lm = li->lm_addr;
/* Read the new objects. */
if (info->using_xfer)
mean r_brk has already been relocated. Assume the dynamic linker
is the object containing r_brk. */
- solib_add (NULL, from_tty, ¤t_target, auto_solib_add);
+ solib_add (NULL, from_tty, auto_solib_add);
sym_addr = 0;
if (info->debug_base && solib_svr4_r_map (info) != 0)
sym_addr = solib_svr4_r_brk (info);
int load_addr_found = 0;
int loader_found_in_list = 0;
struct so_list *so;
- bfd *tmp_bfd = NULL;
struct target_ops *tmp_bfd_target;
sym_addr = 0;
be trivial on GNU/Linux). Therefore, we have to try an alternate
mechanism to find the dynamic linker's base address. */
+ gdb_bfd_ref_ptr tmp_bfd;
TRY
{
tmp_bfd = solib_bfd_open (interp_name);
goto bkpt_at_symbol;
/* Now convert the TMP_BFD into a target. That way target, as
- well as BFD operations can be used. */
- tmp_bfd_target = target_bfd_reopen (tmp_bfd);
- /* target_bfd_reopen acquired its own reference, so we can
- release ours now. */
- gdb_bfd_unref (tmp_bfd);
+ well as BFD operations can be used. target_bfd_reopen
+ acquires its own reference. */
+ tmp_bfd_target = target_bfd_reopen (tmp_bfd.get ());
/* On a running target, we can get the dynamic linker's base
address from the shared library table. */
{
load_addr_found = 1;
loader_found_in_list = 1;
- load_addr = lm_addr_check (so, tmp_bfd);
+ load_addr = lm_addr_check (so, tmp_bfd.get ());
break;
}
so = so->next;
if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
{
CORE_ADDR space_size = (CORE_ADDR) 1 << addr_bit;
- CORE_ADDR tmp_entry_point = exec_entry_point (tmp_bfd,
+ CORE_ADDR tmp_entry_point = exec_entry_point (tmp_bfd.get (),
tmp_bfd_target);
gdb_assert (load_addr < space_size);
= get_thread_arch_regcache (inferior_ptid, target_gdbarch ());
load_addr = (regcache_read_pc (regcache)
- - exec_entry_point (tmp_bfd, tmp_bfd_target));
+ - exec_entry_point (tmp_bfd.get (), tmp_bfd_target));
}
if (!loader_found_in_list)
info->debug_loader_name = xstrdup (interp_name);
info->debug_loader_offset_p = 1;
info->debug_loader_offset = load_addr;
- solib_add (NULL, from_tty, ¤t_target, auto_solib_add);
+ solib_add (NULL, from_tty, auto_solib_add);
}
/* Record the relocated start and end address of the dynamic linker
text and plt section for svr4_in_dynsym_resolve_code. */
- interp_sect = bfd_get_section_by_name (tmp_bfd, ".text");
+ interp_sect = bfd_get_section_by_name (tmp_bfd.get (), ".text");
if (interp_sect)
{
info->interp_text_sect_low =
- bfd_section_vma (tmp_bfd, interp_sect) + load_addr;
+ bfd_section_vma (tmp_bfd.get (), interp_sect) + load_addr;
info->interp_text_sect_high =
info->interp_text_sect_low
- + bfd_section_size (tmp_bfd, interp_sect);
+ + bfd_section_size (tmp_bfd.get (), interp_sect);
}
- interp_sect = bfd_get_section_by_name (tmp_bfd, ".plt");
+ interp_sect = bfd_get_section_by_name (tmp_bfd.get (), ".plt");
if (interp_sect)
{
info->interp_plt_sect_low =
- bfd_section_vma (tmp_bfd, interp_sect) + load_addr;
+ bfd_section_vma (tmp_bfd.get (), interp_sect) + load_addr;
info->interp_plt_sect_high =
info->interp_plt_sect_low
- + bfd_section_size (tmp_bfd, interp_sect);
+ + bfd_section_size (tmp_bfd.get (), interp_sect);
}
/* Now try to set a breakpoint in the dynamic linker. */
for (bkpt_namep = solib_break_names; *bkpt_namep != NULL; bkpt_namep++)
{
- sym_addr = gdb_bfd_lookup_symbol (tmp_bfd, cmp_name_and_sec_flags,
+ sym_addr = gdb_bfd_lookup_symbol (tmp_bfd.get (),
+ cmp_name_and_sec_flags,
*bkpt_namep);
if (sym_addr != 0)
break;
projects / deliverable / binutils-gdb.git / blobdiff