patches/gcc/4.0.4/800-arm-bigendian.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Feb 17 22:08:06 2008 +0000 (2008-02-17)
changeset 431 8bde4c6ea47a
permissions -rw-r--r--
Robert P. J. DAY says:

apparently, the patchset for gcc 4.2.1 applies properly to the
source for gcc 4.2.2 and gcc 4.2.3. so, if you want, you can simply
add support for those last two just by augmenting menuconfig and
adding a couple symlinks for those two directories. seems like a
cheap way to add a couple new versions.
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diff -dur gcc-4.0.4.orig/gcc/config/arm/linux-elf.h gcc-4.0.4/gcc/config/arm/linux-elf.h
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--- gcc-4.0.4.orig/gcc/config/arm/linux-elf.h	2007-02-02 19:24:50.000000000 +0100
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+++ gcc-4.0.4/gcc/config/arm/linux-elf.h	2007-02-02 19:26:12.000000000 +0100
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@@ -31,19 +31,33 @@
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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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 #undef  TARGET_DEFAULT_FLOAT_ABI
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 #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
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 #undef  TARGET_DEFAULT
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-#define TARGET_DEFAULT (0)
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+#define TARGET_DEFAULT (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", "mno-thumb-interwork" }
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+	{ "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mno-thumb-interwork" }
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 /* The GNU C++ standard library requires that these macros be defined.  */
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 #undef CPLUSPLUS_CPP_SPEC
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@@ -95,7 +109,7 @@
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    %{rdynamic:-export-dynamic} \
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    %{!dynamic-linker:-dynamic-linker " ELF_DYNAMIC_LINKER "} \
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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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Only in gcc-4.0.4/gcc/config/arm: linux-elf.h.orig
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diff -dur gcc-4.0.4.orig/gcc/config.gcc gcc-4.0.4/gcc/config.gcc
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--- gcc-4.0.4.orig/gcc/config.gcc	2007-02-02 19:24:50.000000000 +0100
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+++ gcc-4.0.4/gcc/config.gcc	2007-02-02 19:26:12.000000000 +0100
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@@ -672,6 +672,11 @@
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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 linux.h arm/elf.h  arm/linux-gas.h arm/linux-elf.h arm/aout.h arm/arm.h"
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+	case $target in
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+	arm*b-*)
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+		tm_defines="TARGET_BIG_ENDIAN_DEFAULT=1 $tm_defines"
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+		;;
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+	esac
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 	tmake_file="${tmake_file} arm/t-arm arm/t-linux"
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 	extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
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 	gnu_ld=yes