Package: gcc-4.1
Version: 4.1.1-13
Severity: wishlist
Tags: patch
Attached is a patch that makes gcc default to big-endian in case
of an arm*b-*-* target triple. This allows a fully native gcc-4.1
package build on a big-endian ARM platform.
-- System Information:
Debian Release: testing/unstable
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'stable')
Architecture: armeb (armv5teb)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17-rc2
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
--- debian/rules.patch.orig 2006-09-09 01:24:07.000000000 +0200
+++ debian/rules.patch 2006-09-09 01:24:16.000000000 +0200
@@ -44,6 +44,7 @@
libffi-backport2 \
arm-libffi \
arm-gij \
+ arm-bigendian \
hppa-cbranch \
hppa-cbranch2 \
m68k-fjump \
--- debian/patches/arm-bigendian.dpatch.orig 2006-09-09 01:24:00.000000000 +0200
+++ debian/patches/arm-bigendian.dpatch 2006-09-09 01:23:46.000000000 +0200
@@ -0,0 +1,116 @@
+#! /bin/sh -e
+
+# DP: Enable big-endian mode on arm
+
+dir=
+if [ $# -eq 3 -a "$2" = '-d' ]; then
+ pdir="-d $3"
+ dir="$3/"
+elif [ $# -ne 1 ]; then
+ echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
+ exit 1
+fi
+case "$1" in
+ -patch)
+ patch $pdir -f --no-backup-if-mismatch -p1 < $0
+ ;;
+ -unpatch)
+ patch $pdir -f --no-backup-if-mismatch -R -p1 < $0
+ ;;
+ *)
+ echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
+ exit 1
+esac
+exit 0
+
+--- src/gcc/config/arm/linux-elf.h.orig
++++ src/gcc/config/arm/linux-elf.h
+@@ -28,19 +28,33 @@
+ #undef TARGET_VERSION
+ #define TARGET_VERSION fputs (" (ARM GNU/Linux with ELF)", stderr);
+
++/*
++ * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
++ * (big endian) configurations.
++ */
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
++#define TARGET_ENDIAN_OPTION "mbig-endian"
++#define TARGET_LINKER_EMULATION "armelfb_linux"
++#else
++#define TARGET_ENDIAN_DEFAULT 0
++#define TARGET_ENDIAN_OPTION "mlittle-endian"
++#define TARGET_LINKER_EMULATION "armelf_linux"
++#endif
++
+ #undef TARGET_DEFAULT_FLOAT_ABI
+ #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
+
+ #undef TARGET_DEFAULT
+-#define TARGET_DEFAULT (0)
++#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
+
+ #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
+
+-#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p"
++#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
+
+ #undef MULTILIB_DEFAULTS
+ #define MULTILIB_DEFAULTS \
+- { "marm", "mlittle-endian", "mhard-float", "mno-thumb-interwork" }
++ { "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mno-thumb-interwork" }
+
+ /* Now we define the strings used to build the spec file. */
+ #undef LIB_SPEC
+@@ -61,7 +75,7 @@
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker " LINUX_TARGET_INTERPRETER "} \
+ -X \
+- %{mbig-endian:-EB}" \
++ %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
+ SUBTARGET_EXTRA_LINK_SPEC
+
+ #undef LINK_SPEC
+--- src/gcc/config.gcc.orig
++++ src/gcc/config.gcc
+@@ -672,6 +672,11 @@ arm*-*-netbsd*)
+ ;;
+ arm*-*-linux*) # ARM GNU/Linux with ELF
+ tm_file="dbxelf.h elfos.h linux.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"
++ case $target in
++ arm*b-*)
++ tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
++ ;;
++ esac
+ tmake_file="${tmake_file} t-linux arm/t-arm"
+ case ${target} in
+ arm*-*-linux-gnueabi)
+--- src/gcc/config/arm/linux-eabi.h.orig
++++ src/gcc/config/arm/linux-eabi.h
+@@ -20,6 +20,17 @@
+ the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
++/*
++ * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
++ * (big endian) configurations.
++ */
++#undef TARGET_LINKER_EMULATION
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define TARGET_LINKER_EMULATION "armelfb_linux"
++#else
++#define TARGET_LINKER_EMULATION "armelf_linux"
++#endif
++
+ /* On EABI GNU/Linux, we want both the BPABI builtins and the
+ GNU/Linux builtins. */
+ #undef TARGET_OS_CPP_BUILTINS
+@@ -48,7 +59,7 @@
+ #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
+
+ #undef SUBTARGET_EXTRA_LINK_SPEC
+-#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi"
++#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
+
+ /* Use ld-linux.so.3 so that it will be possible to run "classic"
+ GNU/Linux binaries on an EABI system. */
