Date: Thu, 13 Jan 2011 20:44:31 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/lib/csu/amd64 Makefile src/lib/csu/arm Makefile src/lib/csu/common crtbrand.c src/lib/csu/i386-elf Makefile src/lib/csu/ia64 Makefile src/lib/csu/mips Makefile src/lib/csu/powerpc Makefile src/lib/csu/powerpc64 Makefile Message-ID: <201101132044.p0DKij9A040148@repoman.freebsd.org>
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dim 2011-01-13 20:44:31 UTC
FreeBSD src repository
Modified files:
lib/csu/amd64 Makefile
lib/csu/arm Makefile
lib/csu/common crtbrand.c
lib/csu/i386-elf Makefile
lib/csu/ia64 Makefile
lib/csu/mips Makefile
lib/csu/powerpc Makefile
lib/csu/powerpc64 Makefile
Log:
SVN rev 217375 on 2011-01-13 20:44:31Z by dim
Apply a workaround for a binutils issue with the .note.ABI-tag section
generated from lib/csu/common/crtbrand.c (which ultimately ends up in
executables and shared libraries, via crt1.o, gcrt1.o or Scrt1.o).
For all arches except sparc, gcc emits the section directive for the
abitag struct in crtbrand.c with a PROGBITS type. However, newer
versions of binutils (after 2.16.90) require the section to be of NOTE
type, to guarantee that the .note.ABI-tag section correctly ends up in
the first page of the final executable.
Unfortunately, there is no clean way to tell gcc to use another section
type, so crtbrand.c (or the C files that include it) must be compiled in
multiple steps:
- Compile the .c file to a .s file.
- Edit the .s file to change the 'progbits' type to 'note', for the section
directive that defines the .note.ABI-tag section.
- Compile the .s file to an object file.
These steps are done in the invididual Makefiles for each applicable arch.
Reviewed by: kib
Revision Changes Path
1.21 +23 -4 src/lib/csu/amd64/Makefile
1.5 +23 -4 src/lib/csu/arm/Makefile
1.7 +17 -0 src/lib/csu/common/crtbrand.c
1.24 +23 -4 src/lib/csu/i386-elf/Makefile
1.16 +22 -6 src/lib/csu/ia64/Makefile
1.5 +23 -4 src/lib/csu/mips/Makefile
1.12 +23 -4 src/lib/csu/powerpc/Makefile
1.2 +17 -2 src/lib/csu/powerpc64/Makefile
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