gcc/libbacktrace/ChangeLog

2012-10-09  Ian Lance Taylor  <iant@google.com>

	Add support for tracing through shared libraries.
	* configure.ac: Check for link.h and dl_iterate_phdr.
	* elf.c: #include <link.h> if system has dl_iterate_phdr.  #undef
	ELF macros before #defining them.
	(dl_phdr_info, dl_iterate_phdr): Define if system does not have
	dl_iterate_phdr.
	(struct elf_syminfo_data): Add next field.
	(elf_initialize_syminfo): Initialize next field.
	(elf_add_syminfo_data): New static function.
	(elf_add): New static function, broken out of
	backtrace_initialize.  Call backtrace_dwarf_add instead of
	backtrace_dwarf_initialize.
	(struct phdr_data): Define.
	(phdr_callback): New static function.
	(backtrace_initialize): Call elf_add.
	* dwarf.c (struct dwarf_data): Add next and base_address fields.
	(add_unit_addr): Add base_address parameter.  Change all callers.
	(add_unit_ranges, build_address_map): Likewise.
	(add_line): Add ddata parameter.  Change all callers.
	(read_line_program, add_function_range): Likewise.
	(dwarf_lookup_pc): New static function, broken out of
	dwarf_fileline.
	(dwarf_fileline): Call dwarf_lookup_pc.
	(build_dwarf_data): New static function.
	(backtrace_dwarf_add): New function.
	(backtrace_dwarf_initialize): Remove.
	* internal.h (backtrace_dwarf_initialize): Don't declare.
	(backtrace_dwarf_add): Declare.
	* configure, config.h.in: Rebuild.

2012-10-04  Gerald Pfeifer  <gerald@pfeifer.com>

	* btest.c (f23): Avoid uninitialized variable warning.

2012-10-04  Ian Lance Taylor  <iant@google.com>

	* dwarf.c: If the system header files do not declare strnlen,
	provide our own version.

2012-10-03  Ian Lance Taylor  <iant@google.com>

	* dwarf.c (read_uleb128): Fix overflow test.
	(read_sleb128): Likewise.
	(build_address_map): Don't change unit_buf.start.

2012-10-02  Uros Bizjak  <ubizjak@gmail.com>

	PR other/54761
	* configure.ac (EXTRA_FLAGS): New.
	* Makefile.am (AM_FLAGS): Add $(EXTRA_FLAGS).
	* configure, Makefile.in: Regenerate.

2012-09-29  Ian Lance Taylor  <iant@google.com>

	PR other/54749
	* fileline.c (fileline_initialize): Pass errnum as -1 when
	reporting that we could not read executable information after a
	previous failure.

2012-09-27  Ian Lance Taylor  <iant@google.com>

	PR bootstrap/54732
	* configure.ac: Add no-dependencies to AM_INIT_AUTOMAKE.
	* Makefile.am: Add dependencies for all objects.
	* configure, aclocal.m4, Makefile.in: Rebuild.

2012-09-27  Ian Lance Taylor  <iant@google.com>

	PR other/54726
	* elf.c (backtrace_initialize): Set *fileln_fn, not
	state->fileln_fn.

2012-09-19  Ian Lance Taylor  <iant@google.com>

	* configure.ac: Only use GCC_CHECK_UNWIND_GETIPINFO when compiled
	as a target library.
	* configure: Rebuild.

2012-09-19  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
	    Ian Lance Taylor  <iant@google.com>

        * configure.ac (GCC_HEADER_STDINT): Invoke.
        * backtrace.h: If we can't find <stdint.h>, use "gstdint.h".
        * btest.c: Don't include <stdint.h>.
        * dwarf.c: Likewise.
        * configure, aclocal.m4, Makefile.in, config.h.in: Rebuild.

2012-09-18  Ian Lance Taylor  <iant@google.com>

	PR bootstrap/54623
	* Makefile.am (AM_CPPFLAGS): Define.
	(AM_CFLAGS): Remove -I options.
	* Makefile.in: Rebuild.

2012-09-18  Ian Lance Taylor  <iant@google.com>

	* posix.c (O_BINARY): Define if not defined.
	(backtrace_open): Pass O_BINARY to open.  Only call fcntl if
	HAVE_FCNTL is defined.
	* configure.ac: Test for the fcntl function.
	* configure, config.h.in: Rebuild.

2012-09-18  Ian Lance Taylor  <iant@google.com>

	* btest.c (test1, test2, test3, test4): Add the unused attribute.

2012-09-18  Ian Lance Taylor  <iant@google.com>

	* dwarf.c: Correct test of HAVE_DECL_STRNLEN.

2012-09-18  Ian Lance Taylor  <iant@google.com>

	* configure.ac: Add AC_USE_SYSTEM_EXTENSIONS.
	* mmapio.c: Don't define _GNU_SOURCE.
	* configure, config.h.in: Rebuild.

2012-09-18  Ian Lance Taylor  <iant@google.com>

	* configure.ac: Check whether strnlen is declared.
	* dwarf.c: Declare strnlen if not declared.
	* configure, config.h.in: Rebuild.

2012-09-18  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* fileline.c: Include <stdlib.h>.
	* mmap.c: Likewise.

2012-09-17  Ian Lance Taylor  <iant@google.com>

	PR bootstrap/54611
	* nounwind.c (backtrace_full): Rename from backtrace.  Add state
	parameter.

2012-09-17  Gerald Pfeifer  <gerald@pfeifer.com>

	PR bootstrap/54611
	* nounwind.c (backtrace_simple): Add state parameter.

2012-09-17  Ian Lance Taylor  <iant@google.com>

	PR bootstrap/54609
	* unknown.c (unknown_fileline): Add state parameter, remove
	fileline_data parameter, name error_callback parameter.
	(backtrace_initialize): Add state parameter.

2012-09-17  Ian Lance Taylor  <iant@google.com>

	* Initial implementation.