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* solib-svr4.c (svr4_have_link_map_offsets): New function.

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(locate_base): Return early if there aren't any link map offsets.
	(svr4_solib_create_inferior_hook): Warn if shared library support
	is unavailable.
This commit is contained in:
Kevin Buettner 2003-04-15 00:28:23 +00:00
parent 351980a492
commit d5a921c9a8
2 changed files with 32 additions and 2 deletions
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7
gdb/ChangeLog
View file

@ -1,3 +1,10 @@
2003-04-14 Kevin Buettner <kevinb@redhat.com>
* solib-svr4.c (svr4_have_link_map_offsets): New function.
(locate_base): Return early if there aren't any link map offsets.
(svr4_solib_create_inferior_hook): Warn if shared library support
is unavailable.
2003-04-14 David Carlton <carlton@math.stanford.edu>
* symtab.c (symbol_set_names): Add prefix when storing Java names

27
gdb/solib-svr4.c
View file

@ -43,6 +43,7 @@
static struct link_map_offsets *svr4_fetch_link_map_offsets (void);
static struct link_map_offsets *legacy_fetch_link_map_offsets (void);
static int svr4_have_link_map_offsets (void);
/* fetch_link_map_offsets_gdbarch_data is a handle used to obtain the
architecture specific link map offsets fetching function. */
@ -542,9 +543,10 @@ locate_base (void)
/* Check to see if we have a currently valid address, and if so, avoid
doing all this work again and just return the cached address. If
we have no cached address, try to locate it in the dynamic info
section for ELF executables. */
section for ELF executables. There's no point in doing any of this
though if we don't have some link map offsets to work with. */
if (debug_base == 0)
if (debug_base == 0 && svr4_have_link_map_offsets ())
{
if (exec_bfd != NULL
&& bfd_get_flavour (exec_bfd) == bfd_target_elf_flavour)
@ -1273,6 +1275,13 @@ svr4_solib_create_inferior_hook (void)
/* Relocate the main executable if necessary. */
svr4_relocate_main_executable ();
if (!svr4_have_link_map_offsets ())
{
warning ("no shared library support for this OS / ABI");
return;
}
if (!enable_break ())
{
warning ("shared library handler failed to enable breakpoint");
@ -1392,6 +1401,20 @@ svr4_fetch_link_map_offsets (void)
return (flmo ());
}
/* Return 1 if a link map offset fetcher has been defined, 0 otherwise. */
static int
svr4_have_link_map_offsets (void)
{
struct link_map_offsets *(*flmo)(void) =
gdbarch_data (current_gdbarch, fetch_link_map_offsets_gdbarch_data);
if (flmo == NULL
|| (flmo == legacy_fetch_link_map_offsets
&& legacy_svr4_fetch_link_map_offsets_hook == NULL))
return 0;
else
return 1;
}
/* set_solib_svr4_fetch_link_map_offsets() is intended to be called by
a <arch>_gdbarch_init() function. It is used to establish an
architecture specific link_map_offsets fetcher for the architecture