11cb8762fc
Thread support got broken when adding 64bit support on ppc-aix. Upon digging further, I found that the following patch... | * gdb_ptrace.h: Use ptrace64 instead of ptrace if HAVE_PTRACE64 | is defined. | * rs6000-nat.c: Check for __ld_info64_ if compiling 64 BIT gdb. | (rs6000_ptrace32): Call ptrace64 instead of ptrace if present. | (rs6000_ptrace64): Call ptace64 instead of ptracex if present. | * configure.ac: Check for ptrace64. | * configure, config.in: Regenerate. ... is responsible for this regression: (gdb) x /x &__n_pthreads 0xf06a8258 <__n_pthreads>: Cannot access memory at address 0xf06a8258 Prior to the patch, we have: (gdb) x /x &__n_pthreads 0xf06a8258 <__n_pthreads>: 0x00000003 The problem occurs inside rs6000_ptrace32, while calling ptrace64. The address is given to rs6000_ptrace32 as an "int *", while ptrace64 takes a "long long". The cast causes the address to be sign-extended, which results in GDB trying to read the wrong address. This patch fixes the issue by casting the address to a "uintptr_t" instead, and letting the compiler do the implicit conversion to "long long" in the function call. gdb/ChangeLog: * rs6000-nat.c (rs6000_ptrace32): Cast "addr" to "uintptr_t" instead of "long long" in call to ptrace64. |
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bfd | ||
binutils | ||
config | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
.cvsignore | ||
.gitignore | ||
COPYING | ||
COPYING.LIB | ||
COPYING.LIBGLOSS | ||
COPYING.NEWLIB | ||
COPYING3 | ||
COPYING3.LIB | ||
ChangeLog | ||
MAINTAINERS | ||
Makefile.def | ||
Makefile.in | ||
Makefile.tpl | ||
README | ||
README-maintainer-mode | ||
compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
depcomp | ||
djunpack.bat | ||
install-sh | ||
libtool.m4 | ||
ltgcc.m4 | ||
ltmain.sh | ||
ltoptions.m4 | ||
ltsugar.m4 | ||
ltversion.m4 | ||
lt~obsolete.m4 | ||
makefile.vms | ||
missing | ||
mkdep | ||
mkinstalldirs | ||
move-if-change | ||
setup.com | ||
src-release | ||
symlink-tree | ||
ylwrap |
README
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.