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Re: mips: -G0 vs __dso_handle
> I'll pre-approve that change, but I'll also defer to any other
> maintainer who has a solution they prefer.
How about this one?
2006-05-15 DJ Delorie <dj@redhat.com>
* crtstuff.c (__dso_handle): Set section from
TARGET_LBIGCC_SDATA_SECTION if defined.
* doc/tm.text (TARGET_LIBGCC_SDATA_SECTION): Document.
* config/mips/mips.h (TARGET_LIBGCC_SDATA_SECTION): Define.
Index: crtstuff.c
===================================================================
--- crtstuff.c (revision 113799)
+++ crtstuff.c (working copy)
@@ -225,6 +225,9 @@ STATIC void *__JCR_LIST__[]
in one DSO or the main program is not used in another object. The
dynamic linker takes care of this. */
+#ifdef TARGET_LIBGCC_SDATA_SECTION
+extern void *__dso_handle __attribute__ ((__section__ (TARGET_LIBGCC_SDATA_SECTION)));
+#endif
#ifdef HAVE_GAS_HIDDEN
extern void *__dso_handle __attribute__ ((__visibility__ ("hidden")));
#endif
Index: doc/tm.texi
===================================================================
--- doc/tm.texi (revision 113799)
+++ doc/tm.texi (working copy)
@@ -6217,6 +6217,18 @@ registers initialized in the function pr
constant pools don't end up too far way in the text section.
@end defmac
+@defmac TARGET_LIBGCC_SDATA_SECTION
+If defined, a string which names the section into which small
+variables defined in crtstuff and libgcc should go. This is useful
+when the target has options for optimizing access to small data, and
+you want the crtstuff and libgcc routines to be conservative in what
+they expect of your application yet liberal in what your application
+expects. For example, for targets with a @code{.sdata} section (like
+MIPS), you could compile crtstuff with @code{-G 0} so that it doesn't
+require small data support from your application, but use this macro
+to put small data into @code{.sdata} so that your application can
+access these variables whether it uses small data or not.
+
@defmac FORCE_CODE_SECTION_ALIGN
If defined, an ASM statement that aligns a code section to some
arbitrary boundary. This is used to force all fragments of the
Index: config/mips/mips.h
===================================================================
--- config/mips/mips.h (revision 113799)
+++ config/mips/mips.h (working copy)
@@ -466,6 +466,8 @@ extern const struct mips_rtx_cost_data *
#endif
#endif /* IN_LIBGCC2 */
+#define TARGET_LIBGCC_SDATA_SECTION ".sdata"
+
#ifndef MULTILIB_ENDIAN_DEFAULT
#if TARGET_ENDIAN_DEFAULT == 0
#define MULTILIB_ENDIAN_DEFAULT "EL"