Hi,
the following patch changes the GCC configuration for FreeBSD SPARC
(we only support 64-bit v9 there) so that the target CPU type may
be set via -mcpu instead of limiting to the hardcoded equivalent of
-mcpu=ultrasparc and TLS support is enabled if available. Both changes
are also present in the GCC version we ship as system compiler (the
former change actually since 3 years) and additionally have been
regression tested on sparc64-portbld-freebsd9.0.
I'm asking for review and the patch to be applied HEAD and the 4.6
branch once 4.6.0 is released. Gerald (CC'ed) is willing to apply it
for me.
Regards,
Marius
2011-03-22 Marius Strobl <mar...@freebsd.org>
* config/sparc/freebsd.h (CPP_CPU64_DEFAULT_SPEC): Replace with...
(FBSD_TARGET_CPU_CPP_BUILTINS): ...this.
(TARGET_GNU_TLS, TARGET_SUN_TLS): Define.
Index: config/sparc/freebsd.h
===================================================================
--- config/sparc/freebsd.h (revision 170921)
+++ config/sparc/freebsd.h (working copy)
@@ -24,11 +24,19 @@ along with GCC; see the file COPYING3. If not see
{ "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
/* FreeBSD needs the platform name (sparc64) defined.
- Emacs needs to know if the arch is 64 or 32-bits. */
+ Emacs etc needs to know if the arch is 64 or 32-bits.
+ This also selects which targets are available via -mcpu. */
-#undef CPP_CPU64_DEFAULT_SPEC
-#define CPP_CPU64_DEFAULT_SPEC \
- "-D__sparc64__ -D__sparc_v9__ -D__sparcv9 -D__arch64__"
+#undef FBSD_TARGET_CPU_CPP_BUILTINS
+#define FBSD_TARGET_CPU_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define ("__sparc64__"); \
+ builtin_define ("__sparc__"); \
+ builtin_define ("__sparc_v9__"); \
+ builtin_define ("__sparcv9"); \
+ } \
+ while (0)
#undef ASM_SPEC
#define ASM_SPEC "%{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu)"
@@ -152,6 +160,13 @@ along with GCC; see the file COPYING3. If not see
/* #define DWARF_OFFSET_SIZE PTR_SIZE */
+#ifdef HAVE_AS_TLS
+#undef TARGET_SUN_TLS
+#undef TARGET_GNU_TLS
+#define TARGET_SUN_TLS 0
+#define TARGET_GNU_TLS 1
+#endif
+
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} " \
