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2007-07-03 Markus Deuling <deuling@de.ibm.com>

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* cp-namespace.c (lookup_symbol_file): Add block to
	lookup_symbol_global call.
	* Makefile.in (solist_h): Add dependency on symtab header.
	(symtab.o): Add dependency on solist header.
	* solib.c (solib_global_lookup): New function.
	* solib-svr4.c (scan_dyntag): Likewise.
	(elf_locate_base): Call helper routine scan_dyntag.
	(elf_lookup_lib_symbol): New function.
	(_initialize_svr4_solib): Add elf_lookup_lib_symbol to svr4_so_ops.
	* solist.h (symtab.h): New include.
	(struct target_so_ops): New member lookup_lib_global_symbol.
	(solib_global_lookup): New prototype.
	* symtab.c: New include solist.h.
	(lookup_objfile_from_block): New function.
	(lookup_global_symbol_from_objfile): New function.
	(basic_lookup_symbol_nonlocal): Add block to lookup_symbol_global call.
	(lookup_symbol_global): Call library-specific lookup procedure.
	* symtab.h (lookup_global_symbol_from_objfile): New prototype.

	* NEWS: Document framework.

testsuite/

	* gdb.base/solib-symbol.exp: New file (testcase multiple symbol lookup).
	* gdb.base/solib-symbol-lib.c: Likewise.
	* gdb.base/solib-symbol-main.c: Likewise.
This commit is contained in:
Ulrich Weigand 2007-07-03 12:14:44 +00:00
parent 3ccac826a3
commit 3a40aaa0eb
13 changed files with 428 additions and 109 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
gdb/ChangeLog
View file

@ -1,3 +1,26 @@
2007-07-03 Markus Deuling <deuling@de.ibm.com>
* cp-namespace.c (lookup_symbol_file): Add block to
lookup_symbol_global call.
* Makefile.in (solist_h): Add dependency on symtab header.
(symtab.o): Add dependency on solist header.
* solib.c (solib_global_lookup): New function.
* solib-svr4.c (scan_dyntag): Likewise.
(elf_locate_base): Call helper routine scan_dyntag.
(elf_lookup_lib_symbol): New function.
(_initialize_svr4_solib): Add elf_lookup_lib_symbol to svr4_so_ops.
* solist.h (symtab.h): New include.
(struct target_so_ops): New member lookup_lib_global_symbol.
(solib_global_lookup): New prototype.
* symtab.c: New include solist.h.
(lookup_objfile_from_block): New function.
(lookup_global_symbol_from_objfile): New function.
(basic_lookup_symbol_nonlocal): Add block to lookup_symbol_global call.
(lookup_symbol_global): Call library-specific lookup procedure.
* symtab.h (lookup_global_symbol_from_objfile): New prototype.
* NEWS: Document framework.
2007-07-02 Daniel Jacobowitz <dan@codesourcery.com>
* target-descriptions.c (tdesc_create_reg): Do not set reg->type

5
gdb/Makefile.in
View file

@ -799,7 +799,7 @@ solib_h = solib.h
solib_pa64_h = solib-pa64.h
solib_som_h = solib-som.h
solib_svr4_h = solib-svr4.h
solist_h = solist.h
solist_h = solist.h $(symtab_h)
source_h = source.h
sparc64_tdep_h = sparc64-tdep.h $(sparc_tdep_h)
sparc_nat_h = sparc-nat.h
@ -2724,7 +2724,8 @@ symtab.o: symtab.c $(defs_h) $(symtab_h) $(gdbtypes_h) $(gdbcore_h) \
$(language_h) $(demangle_h) $(inferior_h) $(linespec_h) $(source_h) \
$(filenames_h) $(objc_lang_h) $(ada_lang_h) $(hashtab_h) \
$(gdb_obstack_h) $(block_h) $(dictionary_h) $(gdb_string_h) \
$(gdb_stat_h) $(cp_abi_h) $(observer_h) $(gdb_assert_h)
$(gdb_stat_h) $(cp_abi_h) $(observer_h) $(gdb_assert_h) \
$(solist_h)
target.o: target.c $(defs_h) $(gdb_string_h) $(target_h) $(gdbcmd_h) \
$(symtab_h) $(inferior_h) $(bfd_h) $(symfile_h) $(objfiles_h) \
$(gdb_wait_h) $(dcache_h) $(regcache_h) $(gdb_assert_h) $(gdbcore_h) \

4
gdb/NEWS
View file

@ -3,6 +3,10 @@
*** Changes since GDB 6.6
* When looking up multiply-defined global symbols, GDB will now prefer the
symbol definition in the current shared library if it was built using the
-Bsymbolic linker option.
* When the Text User Interface (TUI) is not configured, GDB will now
recognize the -tui command-line option and print a message that the TUI
is not supported.

2
gdb/cp-namespace.c
View file

@ -491,7 +491,7 @@ lookup_symbol_file (const char *name,
}
else
{
sym = lookup_symbol_global (name, linkage_name, domain, symtab);
sym = lookup_symbol_global (name, linkage_name, block, domain, symtab);
}
if (sym != NULL)

212
gdb/solib-svr4.c
View file

@ -354,6 +354,76 @@ bfd_lookup_symbol (bfd *abfd, char *symname, flagword sect_flags)
return symaddr;
}
/* Scan for DYNTAG in .dynamic section of ABFD. If DYNTAG is found 1 is
returned and the corresponding PTR is set. */
static int
scan_dyntag (int dyntag, bfd *abfd, CORE_ADDR *ptr)
{
int arch_size, step, sect_size;
long dyn_tag;
CORE_ADDR dyn_ptr, dyn_addr;
gdb_byte *bufend, *buf;
Elf32_External_Dyn *x_dynp_32;
Elf64_External_Dyn *x_dynp_64;
struct bfd_section *sect;
if (abfd == NULL)
return 0;
arch_size = bfd_get_arch_size (abfd);
if (arch_size == -1)
return 0;
/* Find the start address of the .dynamic section. */
sect = bfd_get_section_by_name (abfd, ".dynamic");
if (sect == NULL)
return 0;
dyn_addr = bfd_section_vma (abfd, sect);
/* Read in .dynamic section, silently ignore errors. */
sect_size = bfd_section_size (abfd, sect);
buf = alloca (sect_size);
if (target_read_memory (dyn_addr, buf, sect_size))
{
/* If target_read_memory fails, try reading the BFD file. */
if (!bfd_get_section_contents (abfd, sect,
buf, 0, sect_size))
return 0;
}
/* Iterate over BUF and scan for DYNTAG. If found, set PTR and return. */
step = (arch_size == 32) ? sizeof (Elf32_External_Dyn)
: sizeof (Elf64_External_Dyn);
for (bufend = buf + sect_size;
buf < bufend;
buf += step)
{
if (arch_size == 32)
{
x_dynp_32 = (Elf32_External_Dyn *) buf;
dyn_tag = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp_32->d_tag);
dyn_ptr = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp_32->d_un.d_ptr);
}
else
{
x_dynp_64 = (Elf64_External_Dyn *) buf;
dyn_tag = bfd_h_get_64 (abfd, (bfd_byte *) x_dynp_64->d_tag);
dyn_ptr = bfd_h_get_64 (abfd, (bfd_byte *) x_dynp_64->d_un.d_ptr);
}
if (dyn_tag == DT_NULL)
return 0;
if (dyn_tag == dyntag)
{
if (ptr)
*ptr = dyn_ptr;
return 1;
}
}
return 0;
}
/*
LOCAL FUNCTION
@ -381,114 +451,31 @@ bfd_lookup_symbol (bfd *abfd, char *symname, flagword sect_flags)
static CORE_ADDR
elf_locate_base (void)
{
struct bfd_section *dyninfo_sect;
int dyninfo_sect_size;
CORE_ADDR dyninfo_addr;
gdb_byte *buf;
gdb_byte *bufend;
int arch_size;
struct minimal_symbol *msymbol;
CORE_ADDR dyn_ptr;
/* Find the start address of the .dynamic section. */
dyninfo_sect = bfd_get_section_by_name (exec_bfd, ".dynamic");
if (dyninfo_sect == NULL)
/* Find DT_DEBUG. */
if (scan_dyntag (DT_DEBUG, exec_bfd, &dyn_ptr))
return dyn_ptr;
/* Find DT_MIPS_RLD_MAP. */
if (scan_dyntag (DT_MIPS_RLD_MAP, exec_bfd, &dyn_ptr))
{
/* This may be a static executable. Look for the symbol
conventionally named _r_debug, as a last resort. */
struct minimal_symbol *msymbol;
msymbol = lookup_minimal_symbol ("_r_debug", NULL, symfile_objfile);
if (msymbol != NULL)
return SYMBOL_VALUE_ADDRESS (msymbol);
else
gdb_byte *pbuf;
int pbuf_size = TYPE_LENGTH (builtin_type_void_data_ptr);
pbuf = alloca (pbuf_size);
/* DT_MIPS_RLD_MAP contains a pointer to the address
of the dynamic link structure. */
if (target_read_memory (dyn_ptr, pbuf, pbuf_size))
return 0;
return extract_typed_address (pbuf, builtin_type_void_data_ptr);
}
dyninfo_addr = bfd_section_vma (exec_bfd, dyninfo_sect);
/* Read in .dynamic section, silently ignore errors. */
dyninfo_sect_size = bfd_section_size (exec_bfd, dyninfo_sect);
buf = alloca (dyninfo_sect_size);
if (target_read_memory (dyninfo_addr, buf, dyninfo_sect_size))
return 0;
/* Find the DT_DEBUG entry in the the .dynamic section.
For mips elf we look for DT_MIPS_RLD_MAP, mips elf apparently has
no DT_DEBUG entries. */
arch_size = bfd_get_arch_size (exec_bfd);
if (arch_size == -1) /* failure */
return 0;
if (arch_size == 32)
{ /* 32-bit elf */
for (bufend = buf + dyninfo_sect_size;
buf < bufend;
buf += sizeof (Elf32_External_Dyn))
{
Elf32_External_Dyn *x_dynp = (Elf32_External_Dyn *) buf;
long dyn_tag;
CORE_ADDR dyn_ptr;
dyn_tag = bfd_h_get_32 (exec_bfd, (bfd_byte *) x_dynp->d_tag);
if (dyn_tag == DT_NULL)
break;
else if (dyn_tag == DT_DEBUG)
{
dyn_ptr = bfd_h_get_32 (exec_bfd,
(bfd_byte *) x_dynp->d_un.d_ptr);
return dyn_ptr;
}
else if (dyn_tag == DT_MIPS_RLD_MAP)
{
gdb_byte *pbuf;
int pbuf_size = TYPE_LENGTH (builtin_type_void_data_ptr);
pbuf = alloca (pbuf_size);
/* DT_MIPS_RLD_MAP contains a pointer to the address
of the dynamic link structure. */
dyn_ptr = bfd_h_get_32 (exec_bfd,
(bfd_byte *) x_dynp->d_un.d_ptr);
if (target_read_memory (dyn_ptr, pbuf, pbuf_size))
return 0;
return extract_typed_address (pbuf, builtin_type_void_data_ptr);
}
}
}
else /* 64-bit elf */
{
for (bufend = buf + dyninfo_sect_size;
buf < bufend;
buf += sizeof (Elf64_External_Dyn))
{
Elf64_External_Dyn *x_dynp = (Elf64_External_Dyn *) buf;
long dyn_tag;
CORE_ADDR dyn_ptr;
dyn_tag = bfd_h_get_64 (exec_bfd, (bfd_byte *) x_dynp->d_tag);
if (dyn_tag == DT_NULL)
break;
else if (dyn_tag == DT_DEBUG)
{
dyn_ptr = bfd_h_get_64 (exec_bfd,
(bfd_byte *) x_dynp->d_un.d_ptr);
return dyn_ptr;
}
else if (dyn_tag == DT_MIPS_RLD_MAP)
{
gdb_byte *pbuf;
int pbuf_size = TYPE_LENGTH (builtin_type_void_data_ptr);
pbuf = alloca (pbuf_size);
/* DT_MIPS_RLD_MAP contains a pointer to the address
of the dynamic link structure. */
dyn_ptr = bfd_h_get_64 (exec_bfd,
(bfd_byte *) x_dynp->d_un.d_ptr);
if (target_read_memory (dyn_ptr, pbuf, pbuf_size))
return 0;
return extract_typed_address (pbuf, builtin_type_void_data_ptr);
}
}
}
/* This may be a static executable. Look for the symbol
conventionally named _r_debug, as a last resort. */
msymbol = lookup_minimal_symbol ("_r_debug", NULL, symfile_objfile);
if (msymbol != NULL)
return SYMBOL_VALUE_ADDRESS (msymbol);
/* DT_DEBUG entry not found. */
return 0;
@ -1554,6 +1541,24 @@ svr4_lp64_fetch_link_map_offsets (void)
struct target_so_ops svr4_so_ops;
/* Lookup global symbol for ELF DSOs linked with -Bsymbolic. Those DSOs have a
different rule for symbol lookup. The lookup begins here in the DSO, not in
the main executable. */
static struct symbol *
elf_lookup_lib_symbol (const struct objfile *objfile,
const char *name,
const char *linkage_name,
const domain_enum domain, struct symtab **symtab)
{
if (objfile->obfd == NULL
|| scan_dyntag (DT_SYMBOLIC, objfile->obfd, NULL) != 1)
return NULL;
return lookup_global_symbol_from_objfile
(objfile, name, linkage_name, domain, symtab);
}
extern initialize_file_ftype _initialize_svr4_solib; /* -Wmissing-prototypes */
void
@ -1569,6 +1574,7 @@ _initialize_svr4_solib (void)
svr4_so_ops.current_sos = svr4_current_sos;
svr4_so_ops.open_symbol_file_object = open_symbol_file_object;
svr4_so_ops.in_dynsym_resolve_code = svr4_in_dynsym_resolve_code;
svr4_so_ops.lookup_lib_global_symbol = elf_lookup_lib_symbol;
/* FIXME: Don't do this here. *_gdbarch_init() should set so_ops. */
current_target_so_ops = &svr4_so_ops;

18
gdb/solib.c
View file

@ -961,6 +961,24 @@ show_auto_solib_add (struct ui_file *file, int from_tty,
}
/* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call
the library-specific handler if it is installed for the current target. */
struct symbol *
solib_global_lookup (const struct objfile *objfile,
const char *name,
const char *linkage_name,
const domain_enum domain,
struct symtab **symtab)
{
if (current_target_so_ops->lookup_lib_global_symbol != NULL)
return current_target_so_ops->lookup_lib_global_symbol (objfile,
name, linkage_name, domain, symtab);
return NULL;
}
extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */
void

18
gdb/solist.h
View file

@ -23,6 +23,8 @@
#define SOLIST_H
#define SO_NAME_MAX_PATH_SIZE 512 /* FIXME: Should be dynamic */
/* For domain_enum domain. */
#include "symtab.h"
/* Forward declaration for target specific link map information. This
struct is opaque to all but the target specific file. */
@ -107,7 +109,14 @@ struct target_so_ops
Convenience function for remote debuggers finding host libs. */
int (*find_and_open_solib) (char *soname,
unsigned o_flags, char **temp_pathname);
/* Hook for looking up global symbols in a library-specific way. */
struct symbol * (*lookup_lib_global_symbol) (const struct objfile *objfile,
const char *name,
const char *linkage_name,
const domain_enum domain,
struct symtab **symtab);
};
/* Free the memory associated with a (so_list *). */
@ -129,4 +138,11 @@ extern struct target_so_ops *current_target_so_ops;
#define TARGET_SO_IN_DYNSYM_RESOLVE_CODE \
(current_target_so_ops->in_dynsym_resolve_code)
/* Handler for library-specific global symbol lookup in solib.c. */
struct symbol *solib_global_lookup (const struct objfile *objfile,
const char *name,
const char *linkage_name,
const domain_enum domain,
struct symtab **symtab);
#endif

85
gdb/symtab.c
View file

@ -57,6 +57,7 @@
#include "cp-abi.h"
#include "observer.h"
#include "gdb_assert.h"
#include "solist.h"
/* Prototypes for local functions */
@ -1261,6 +1262,26 @@ lookup_symbol_aux_local (const char *name, const char *linkage_name,
return NULL;
}
/* Look up OBJFILE to BLOCK. */
static struct objfile *
lookup_objfile_from_block (const struct block *block)
{
struct objfile *obj;
struct symtab *s;
if (block == NULL)
return NULL;
block = block_global_block (block);
/* Go through SYMTABS. */
ALL_SYMTABS (obj, s)
if (block == BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK))
return obj;
return NULL;
}
/* Look up a symbol in a block; if found, locate its symtab, fixup the
symbol, and set block_found appropriately. */
@ -1302,6 +1323,57 @@ lookup_symbol_aux_block (const char *name, const char *linkage_name,
return NULL;
}
/* Check all global symbols in OBJFILE in symtabs and
psymtabs. */
struct symbol *
lookup_global_symbol_from_objfile (const struct objfile *objfile,
const char *name,
const char *linkage_name,
const domain_enum domain,
struct symtab **symtab)
{
struct symbol *sym;
struct blockvector *bv;
const struct block *block;
struct symtab *s;
struct partial_symtab *ps;
/* Go through symtabs. */
ALL_OBJFILE_SYMTABS (objfile, s)
{
bv = BLOCKVECTOR (s);
block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
sym = lookup_block_symbol (block, name, linkage_name, domain);
if (sym)
{
block_found = block;
if (symtab != NULL)
*symtab = s;
return fixup_symbol_section (sym, (struct objfile *)objfile);
}
}
/* Now go through psymtabs. */
ALL_OBJFILE_PSYMTABS (objfile, ps)
{
if (!ps->readin
&& lookup_partial_symbol (ps, name, linkage_name,
1, domain))
{
s = PSYMTAB_TO_SYMTAB (ps);
bv = BLOCKVECTOR (s);
block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
sym = lookup_block_symbol (block, name, linkage_name, domain);
if (symtab != NULL)
*symtab = s;
return fixup_symbol_section (sym, (struct objfile *)objfile);
}
}
return NULL;
}
/* Check to see if the symbol is defined in one of the symtabs.
BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
depending on whether or not we want to search global symbols or
@ -1567,7 +1639,7 @@ basic_lookup_symbol_nonlocal (const char *name,
if (sym != NULL)
return sym;
return lookup_symbol_global (name, linkage_name, domain, symtab);
return lookup_symbol_global (name, linkage_name, block, domain, symtab);
}
/* Lookup a symbol in the static block associated to BLOCK, if there
@ -1595,10 +1667,19 @@ lookup_symbol_static (const char *name,
struct symbol *
lookup_symbol_global (const char *name,
const char *linkage_name,
const struct block *block,
const domain_enum domain,
struct symtab **symtab)
{
struct symbol *sym;
struct symbol *sym = NULL;
struct objfile *objfile = NULL;
/* Call library-specific lookup procedure. */
objfile = lookup_objfile_from_block (block);
if (objfile != NULL)
sym = solib_global_lookup (objfile, name, linkage_name, domain, symtab);
if (sym != NULL)
return sym;
sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, linkage_name,
domain, symtab);

9
gdb/symtab.h
View file

@ -1050,6 +1050,7 @@ extern struct symbol *lookup_symbol_static (const char *name,
extern struct symbol *lookup_symbol_global (const char *name,
const char *linkage_name,
const struct block *block,
const domain_enum domain,
struct symtab **symtab);
@ -1398,4 +1399,12 @@ extern struct cleanup *make_cleanup_free_search_symbols (struct symbol_search
extern void set_main_name (const char *name);
extern /*const */ char *main_name (void);
/* Check global symbols in objfile. */
struct symbol *lookup_global_symbol_from_objfile (const struct objfile *objfile,
const char *name,
const char *linkage_name,
const domain_enum domain,
struct symtab **symtab);
#endif /* !defined(SYMTAB_H) */

6
gdb/testsuite/ChangeLog
View file

@ -1,3 +1,9 @@
2007-07-03 Markus Deuling <deuling@de.ibm.com>
* gdb.base/solib-symbol.exp: New file (testcase multiple symbol lookup).
* gdb.base/solib-symbol-lib.c: Likewise.
* gdb.base/solib-symbol-main.c: Likewise.
2007-07-02 Daniel Jacobowitz <dan@codesourcery.com>
* config/gdbserver.exp (gdb_reconnect): New.

32
gdb/testsuite/gdb.base/solib-symbol-lib.c Normal file
View file

@ -0,0 +1,32 @@
/* Copyright 2007 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Contributed by Markus Deuling <deuling@de.ibm.com>.
*/
#include <stdio.h>
void
foo ()
{
printf ("foo in lib\n");
return;
}
void
foo2()
{
printf ("foo2 in lib\n");
return;
}

43
gdb/testsuite/gdb.base/solib-symbol-main.c Normal file
View file

@ -0,0 +1,43 @@
/* Copyright 2007 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Contributed by Markus Deuling <deuling@de.ibm.com>.
*/
#include <stdio.h>
extern void foo();
void foo3();
void foo2();
int main ()
{
printf ("in main\n");
foo ();
foo3 ();
return 0;
}
void foo3()
{
printf ("foo3 in main\n");
return;
}
void foo2()
{
printf ("foo2 in main\n");
return;
}

80
gdb/testsuite/gdb.base/solib-symbol.exp Normal file
View file

@ -0,0 +1,80 @@
# Copyright 2007 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# Contributed by Markus Deuling <deuling@de.ibm.com>.
#
if {[skip_shlib_tests]} {
return 0
}
# Library file.
set libname "solib-symbol-lib"
set srcfile_lib ${srcdir}/${subdir}/${libname}.c
set binfile_lib ${objdir}/${subdir}/${libname}.so
set lib_flags [list debug ldflags=-Wl,-Bsymbolic]
# Binary file.
set testfile "solib-symbol-main"
set srcfile ${srcdir}/${subdir}/${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
set bin_flags [list debug shlib=${binfile_lib}]
if [get_compiler_info ${binfile}] {
return -1
}
if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib} $lib_flags] != ""
|| [gdb_compile ${srcfile} ${binfile} executable $bin_flags] != "" } {
untested "Could not compile $binfile_lib or $binfile."
return -1
}
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
gdb_load_shlibs $binfile_lib
if ![runto_main] then {
fail "Can't run to main"
return 0
}
# Set a breakpoint in the binary.
gdb_test "br foo2" \
"Breakpoint.*file.*${srcfile}.*" \
"foo2 in main"
delete_breakpoints
# Break in the library.
gdb_test "br foo" \
"" \
"foo in libmd"
gdb_test "continue" \
"Continuing.*" \
"continue"
# This symbol is now looked up in the ELF library.
gdb_test "br foo2" \
"Breakpoint.*file.*${srcfile_lib}.*" \
"foo2 in mdlib"
gdb_exit
return 0