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Xavier Roirand 79b32f4a3a Darwin: Handle unrelocated dyld.
On Darwin, debugging an helloworld program with GDB does
not work and ends with:

  (gdb) set startup-with-shell off
  (gdb) start
  Temporary breakpoint 1 at 0x100000fb4: file /tmp/helloworld.c, line 1.
  Starting program: /private/tmp/helloworld
  [New Thread 0x2703 of process 18906]
  [New Thread 0x2603 of process 18906]

  [1]+  Stopped                 ./gdb/gdb /tmp/helloworld

When debugging with lldb, instead of having the STOP signal, we can
see that a breakpoint is not set to a proper location:

  Warning:
  Cannot insert breakpoint -1.
  Cannot access memory at address 0xf726

  Command aborted.

The inserted breakpoint is the one used when GDB has to stop the target
when a shared library is loaded or unloaded. The notifier address used
for adding the breakpoint is wrong thus the above failure.
This notifier address is an offset relative to dyld base address, so
the value calculation has to be updated to reflect this.

This was tested on High Sierra by trying to run a simple "hello world"
program.

gdb/ChangeLog:

	PR gdb/20981:
        * solib-darwin.c (darwin_get_dyld_bfd): New function.
        (darwin_solib_get_all_image_info_addr_at_init): Update call.
        (darwin_handle_solib_event): New function.
        (darwin_solib_create_inferior_hook): Handle unrelocated dyld.

Change-Id: I7dde5008c9158f17b78dc89bd7f4bd8a12d4a6e1
2018-09-19 15:23:29 -06:00
bfd Automatic date update in version.in 2018-09-19 00:00:45 +00:00
binutils Free symbol buffers if they are no longer in use 2018-09-17 08:53:29 -07:00
config
contrib Update dg-extract-results.* from gcc 2018-08-06 16:05:16 +02:00
cpu
elfcpp [MIPS] Add Loongson 2K1000 proccessor support. 2018-08-29 20:55:25 +08:00
etc
gas Fix Aarch64 bug in warning filtering. 2018-09-18 14:37:56 +01:00
gdb Darwin: Handle unrelocated dyld. 2018-09-19 15:23:29 -06:00
gold [MIPS] Add Loongson 2K1000 proccessor support. 2018-08-29 20:55:25 +08:00
gprof
include Disable -Wformat-nonliteral in parts of printcmd.c 2018-09-05 21:47:33 -06:00
intl Backport gettext fixes to get rid of warnings on macOS 2018-08-02 14:56:02 -04:00
ld PR23648 testcase 2018-09-19 17:38:46 +09:30
libdecnumber
libiberty Copy from GCC: Add linker_output as prefix for LTO temps (PR lto/86548). 2018-08-01 14:23:10 +01:00
opcodes RISC-V: bge[u] should get higher priority than ble[u]. 2018-09-17 11:43:08 -07:00
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ChangeLog Add "contrib" to the list of GDB support dirs (on src-release.sh) 2018-09-13 12:33:19 -04:00
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.