patches/gcc/4.1.2/200-arm-bigendian.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Fri Aug 19 00:52:05 2011 +0200 (2011-08-19)
branch1.12
changeset 2633 22e779b0a4ed
parent 13 068dce39f687
permissions -rw-r--r--
scripts: simplify and fix the toolchain config script

The script that is installed, and which sole purpose is to dump
the .config that was used to build the toolchain, is pure insanity.

Let's make it much, much more simpler...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 814ea73df7e0fab3db1cbe7623932714359c732b)
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--- gcc-4.1.2.orig/gcc/config/arm/linux-elf.h	2007-03-04 23:25:37.000000000 +0100
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+++ gcc-4.1.2/gcc/config/arm/linux-elf.h	2007-03-04 23:35:09.000000000 +0100
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@@ -28,19 +28,33 @@
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 #undef  TARGET_VERSION
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 #define TARGET_VERSION  fputs (" (ARM GNU/Linux with ELF)", stderr);
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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 MASK_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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 /* Now we define the strings used to build the spec file.  */
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 #undef  LIB_SPEC
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@@ -65,7 +79,7 @@
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    %{rdynamic:-export-dynamic} \
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    %{!dynamic-linker:-dynamic-linker " LINUX_TARGET_INTERPRETER "} \
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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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 #undef  LINK_SPEC
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--- gcc-4.1.2.orig/gcc/config.gcc	2007-03-04 23:31:48.000000000 +0100
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+++ gcc-4.1.2/gcc/config.gcc	2007-03-04 23:35:09.000000000 +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" 
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+	case $target in
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+	arm*b-*)
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+		tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
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+		;;
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+	esac
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 	tmake_file="${tmake_file} t-linux arm/t-arm"
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 	case ${target} in
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 	arm*-*-linux-gnueabi | arm*-*-linux-uclibcgnueabi)
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--- gcc-4.1.2.orig/gcc/config/arm/linux-eabi.h	2007-03-04 23:31:48.000000000 +0100
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+++ gcc-4.1.2/gcc/config/arm/linux-eabi.h	2007-03-04 23:35:09.000000000 +0100
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@@ -20,6 +20,17 @@
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    the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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    Boston, MA 02110-1301, USA.  */
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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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+#undef TARGET_LINKER_EMULATION
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+#if TARGET_BIG_ENDIAN_DEFAULT
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+#define TARGET_LINKER_EMULATION "armelfb_linux_eabi"
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+#else
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+#define TARGET_LINKER_EMULATION "armelf_linux_eabi"
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+#endif
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+
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 /* On EABI GNU/Linux, we want both the BPABI builtins and the
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    GNU/Linux builtins.  */
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 #undef TARGET_OS_CPP_BUILTINS
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@@ -48,7 +59,7 @@
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 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
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 #undef SUBTARGET_EXTRA_LINK_SPEC
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-#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi"
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+#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
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 /* Use ld-linux.so.3 so that it will be possible to run "classic"
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    GNU/Linux binaries on an EABI system.  */
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--- gcc-4.1.2.orig/gcc/config/arm/bpabi.h	2005-12-13 02:35:37.000000000 +0100
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+++ gcc-4.1.2/gcc/config/arm/bpabi.h	2007-03-04 23:35:09.000000000 +0100
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@@ -33,9 +33,19 @@
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 #undef FPUTYPE_DEFAULT
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 #define FPUTYPE_DEFAULT FPUTYPE_VFP
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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 MASK_BIG_END
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+#else
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+#define TARGET_ENDIAN_DEFAULT 0
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+#endif
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+
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 /* EABI targets should enable interworking by default.  */
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 #undef TARGET_DEFAULT
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-#define TARGET_DEFAULT MASK_INTERWORK
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+#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT)
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 /* The ARM BPABI functions return a boolean; they use no special
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    calling convention.  */