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| author | Jan Kratochvil <jan.kratochvil@redhat.com> | 2008-07-10 09:31:00 +0000 |
|---|---|---|
| committer | Jan Kratochvil <jan.kratochvil@redhat.com> | 2008-07-10 09:31:00 +0000 |
| commit | 10568435e1fb17f06004b6e44fb30d05805acc04 (patch) | |
| tree | 73644037047fd5460c7a58978a1d4881f899e396 /gdb/configure.ac | |
| parent | 1b315056928c75e989b6a0fa858577141da5cc4f (diff) | |
| download | gdb-10568435e1fb17f06004b6e44fb30d05805acc04.zip gdb-10568435e1fb17f06004b6e44fb30d05805acc04.tar.gz gdb-10568435e1fb17f06004b6e44fb30d05805acc04.tar.bz2 | |
gdb/
* NEWS (New commands): Mention "set disable-randomization".
* configure.ac: Add check for HAVE_PERSONALITY and
HAVE_DECL_ADDR_NO_RANDOMIZE.
* configure, config.in: Regenerate.
* linux-nat.c [HAVE_PERSONALITY]: New include <sys/personality.h>.
[HAVE_PERSONALITY] [!HAVE_DECL_ADDR_NO_RANDOMIZE]: Set
ADDR_NO_RANDOMIZE.
(disable_randomization, show_disable_randomization)
(set_disable_randomization): New.
(linux_nat_create_inferior) [HAVE_PERSONALITY]: New variables
PERSONALITY_ORIG and PERSONALITY_SET. Disable randomization upon the
variable DISABLE_RANDOMIZATION.
(_initialize_linux_nat): Call ADD_SETSHOW_BOOLEAN_CMD for the variable
DISABLE_RANDOMIZATION.
gdb/doc/
* gdb.texinfo (Starting): Document "set disable-randomization".
gdb/testsuite/
* gdb.base/randomize.exp, gdb.base/randomize.c: New files.
Diffstat (limited to 'gdb/configure.ac')
| -rw-r--r-- | gdb/configure.ac | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gdb/configure.ac b/gdb/configure.ac index 95d5b08..0a92812 100644 --- a/gdb/configure.ac +++ b/gdb/configure.ac @@ -1268,6 +1268,29 @@ if test "x$gdb_cv_sys_syscall_h_has_tkill" = "xyes" && test "x$ac_cv_func_syscal AC_DEFINE(HAVE_TKILL_SYSCALL, 1, [Define if you support the tkill syscall.]) fi +dnl Check if we can disable the virtual address space randomization. +dnl The functionality of setarch -R. +AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>]) +define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [ +# if !HAVE_DECL_ADDR_NO_RANDOMIZE +# define ADDR_NO_RANDOMIZE 0x0040000 +# endif + /* Test the flag could be set and stays set. */ + personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE); + if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE)) + return 1])]) +AC_RUN_IFELSE([PERSONALITY_TEST], + [have_personality=true], + [have_personality=false], + [AC_LINK_IFELSE([PERSONALITY_TEST], + [have_personality=true], + [have_personality=false])]) +if $have_personality +then + AC_DEFINE([HAVE_PERSONALITY], 1, + [Define if you support the personality syscall.]) +fi + dnl Handle optional features that can be enabled. AC_ARG_WITH(sysroot, |