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Use PTRACE_PEEKUSER to get fs_base/gs_base

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* amd64-linux-nat.c: Include <sys/user.h>.
	(ps_get_thread_area): Use PTRACE_PEEKUSER to get fs_base/gs_base
	if HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE or
	HAVE_STRUCT_USER_REGS_STRUCT_GS_BASE is defined.

	* configure.ac: Check if the fs_base and gs_base members of
	`struct user_regs_struct' exist.
	* config.in: Regenerated.
	* configure: Likewise.
This commit is contained in:
H.J. Lu
2012-06-26 14:43:01 +00:00
parent a4fd3de5d3
commit 6fea9e186c
5 changed files with 80 additions and 0 deletions
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25
gdb/configure vendored
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@@ -10612,6 +10612,31 @@ _ACEOF
fi
# See if <sys/user.h> supports the %fs_base and %gs_bas amd64 segment registers.
# Older amd64 Linux's don't have the fs_base and gs_base members of
# `struct user_regs_struct'.
ac_fn_c_check_member "$LINENO" "struct user_regs_struct" "fs_base" "ac_cv_member_struct_user_regs_struct_fs_base" "#include <sys/user.h>
"
if test "x$ac_cv_member_struct_user_regs_struct_fs_base" = x""yes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE 1
_ACEOF
fi
ac_fn_c_check_member "$LINENO" "struct user_regs_struct" "gs_base" "ac_cv_member_struct_user_regs_struct_gs_base" "#include <sys/user.h>
"
if test "x$ac_cv_member_struct_user_regs_struct_gs_base" = x""yes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_STRUCT_USER_REGS_STRUCT_GS_BASE 1
_ACEOF
fi
# See if <sys/ptrace.h> provides the PTRACE_GETREGS request.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for PTRACE_GETREGS" >&5
$as_echo_n "checking for PTRACE_GETREGS... " >&6; }