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x86-64 gdbserver config
- From: Nathan Sidwell <nathan at codesourcery dot com>
- To: gdb-patches at sourceware dot org
- Date: Mon, 02 Nov 2009 12:50:59 +0000
- Subject: x86-64 gdbserver config
This patch allows building an x86-64 gdbserver for a multilibbed
i686-pc-linux-gnu target. One cannot tell from the target triplet that x86-64
source files are needed -- one must invoke the compiler and examine the
__x86_64__ #define. For instance, the CC_FOR_TARGET may be 'my-gcc -m64'.
built and tested for an m64 multilib of an i686-pc-linux-gnu target. ok?
nathan
--
Nathan Sidwell :: http://www.codesourcery.com :: CodeSourcery
2009-10-30 Nathan Sidwell <nathan@codesourcery.com>
* configure.ac (i[34567]86-*): Check if we're targetting x86-64
with an i686 compiler.
* configure.srv (i[34567]86-*-linux*): Pull in x86-64 handling if
needed.
* configure: Rebuilt.
Index: configure
===================================================================
Index: configure.ac
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/configure.ac,v
retrieving revision 1.28
diff -c -3 -p -r1.28 configure.ac
*** configure.ac 29 Oct 2009 17:43:44 -0000 1.28
--- configure.ac 2 Nov 2009 12:44:11 -0000
*************** ACX_BUGURL([http://www.gnu.org/software/
*** 73,78 ****
--- 73,97 ----
AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
+ # Check for various supplementary target information (beyond the
+ # triplet) which might affect the choices in configure.srv.
+ case "${target}" in
+ changequote(,)dnl
+ i[34567]86-*-linux*)
+ changequote([,])dnl
+ AC_CACHE_CHECK([if building for x86-64], [gdb_cv_i386_is_x86_64],
+ [save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $CFLAGS"
+ AC_EGREP_CPP([got it], [
+ #if __x86_64__
+ got it
+ #endif
+ ], [gdb_cv_i386_is_x86_64=yes],
+ [gdb_cv_i386_is_x86_64=no])
+ CPPFLAGS="$save_CPPFLAGS"])
+ ;;
+ esac
+
. ${srcdir}/configure.srv
if test "${srv_mingwce}" = "yes"; then
Index: configure.srv
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/configure.srv,v
retrieving revision 1.46
diff -c -3 -p -r1.46 configure.srv
*** configure.srv 31 Jul 2009 15:23:20 -0000 1.46
--- configure.srv 2 Nov 2009 12:44:11 -0000
*************** case "${target}" in
*** 64,69 ****
--- 64,72 ----
srv_tgtobj="i386-low.o win32-low.o win32-i386-low.o"
;;
i[34567]86-*-linux*) srv_regobj=reg-i386-linux.o
+ if test "$gdb_cv_i386_is_x86_64" = yes ; then
+ srv_regobj="reg-x86-64-linux.o $srv_regobj"
+ fi
srv_tgtobj="linux-low.o linux-x86-low.o i386-low.o i387-fp.o"
srv_linux_usrregs=yes
srv_linux_regsets=yes