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By Lennert Buytenhek <buytenh@wantstofly.org>
Adds support for arm*b-linux* big-endian ARM targets
See http://gcc.gnu.org/PR16350
--- gcc-4.1.0/gcc/config/arm/linux-elf.h
+++ gcc-4.1.0/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
--- gcc-4.1.0/gcc/config.gcc
+++ gcc-4.1.0/gcc/config.gcc
@@ -672,6 +672,11 @@
;;
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)
|
