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git://projects.qi-hardware.com/openwrt-xburst.git
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b14d40272e
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@3648 3c298f89-4303-0410-b956-a3cf2f4a3e73
68 lines
2.1 KiB
Diff
68 lines
2.1 KiB
Diff
By Lennert Buytenhek <buytenh@wantstofly.org>
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Adds support for arm*b-linux* big-endian ARM targets
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See http://gcc.gnu.org/PR16350
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--- gcc-4.0.3/gcc/config/arm/linux-elf.h
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+++ gcc-4.0.3/gcc/config/arm/linux-elf.h
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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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@@ -90,7 +104,7 @@
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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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--- gcc-4.0.3/gcc/config.gcc
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+++ gcc-4.0.3/gcc/config.gcc
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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
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