patches/gcc/3.3.6/110-arm-bigendian.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Thu Jul 31 09:08:33 2008 +0000 (2008-07-31)
changeset 752 b037a5643e04
parent 402 197e1b49586e
permissions -rw-r--r--
Have the glibc build use the cross-objdump, rather than the host one.
On some distros (eg. Fedora), the native objdump can not interpret objects not for the native system, and thus fail.
This commit adds a new patch against glibc-2.7 that introduces OBJDUMP_FOR_HOST, wich, if set, overides the detected objdump.

Note: bizarely enough, glibc already has code to detect the cross-objdump, but that does not work for an unknown reason... :-(

/trunk/patches/glibc/2.7/220-objdump_for_host.patch | 13 13 0 0 +++++++++
/trunk/scripts/build/libc_glibc.sh | 37 21 16 0 +++++++++++++++------------
2 files changed, 34 insertions(+), 16 deletions(-)
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diff -urN gcc-3.3.4.orig/gcc/config/arm/linux-elf.h gcc-3.3.4/gcc/config/arm/linux-elf.h
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--- gcc-3.3.4.orig/gcc/config/arm/linux-elf.h	2004-03-30 22:43:45.000000000 +0200
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+++ gcc-3.3.4/gcc/config/arm/linux-elf.h	2004-08-20 02:13:02.969084177 +0200
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@@ -30,17 +30,31 @@
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 /* Do not assume anything about header files.  */
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 #define NO_IMPLICIT_EXTERN_C
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+/*
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+ * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
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+ * (big endian) configurations.
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+ */
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+#if TARGET_BIG_ENDIAN_DEFAULT
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+#define TARGET_ENDIAN_DEFAULT ARM_FLAG_BIG_END
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+#define TARGET_ENDIAN_OPTION "mbig-endian"
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+#define TARGET_LINKER_EMULATION "armelfb_linux"
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+#else
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+#define TARGET_ENDIAN_DEFAULT 0
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+#define TARGET_ENDIAN_OPTION "mlittle-endian"
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+#define TARGET_LINKER_EMULATION "armelf_linux"
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+#endif
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+
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 /* Default is to use APCS-32 mode.  */
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 #undef  TARGET_DEFAULT
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-#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_MMU_TRAPS)
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+#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_MMU_TRAPS | TARGET_ENDIAN_DEFAULT)
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 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
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-#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p"
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+#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
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 #undef  MULTILIB_DEFAULTS
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 #define MULTILIB_DEFAULTS \
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-	{ "marm", "mlittle-endian", "mhard-float", "mapcs-32", "mno-thumb-interwork" }
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+	{ "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mapcs-32", "mno-thumb-interwork" }
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 #define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
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@@ -88,7 +102,7 @@
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    %{rdynamic:-export-dynamic} \
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    %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \
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    -X \
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-   %{mbig-endian:-EB}" \
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+   %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
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    SUBTARGET_EXTRA_LINK_SPEC
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 #define TARGET_OS_CPP_BUILTINS()		\
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diff -urN gcc-3.3.4.orig/gcc/config.gcc gcc-3.3.4/gcc/config.gcc
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--- gcc-3.3.4.orig/gcc/config.gcc	2004-04-29 06:42:47.000000000 +0200
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+++ gcc-3.3.4/gcc/config.gcc	2004-08-20 02:11:04.326143343 +0200
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@@ -699,6 +699,11 @@
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 	;;
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 arm*-*-linux*)			# ARM GNU/Linux with ELF
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 	tm_file="dbxelf.h elfos.h arm/elf.h arm/linux-gas.h arm/linux-elf.h arm/aout.h arm/arm.h"
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+	case $machine in
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+	arm*b-*)
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+		tm_defines="TARGET_BIG_ENDIAN_DEFAULT=1 $tm_defines"
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+		;;
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+	esac
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 	tmake_file="t-slibgcc-elf-ver t-linux arm/t-linux"
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 	extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
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 	gnu_ld=yes