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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-3.4.1-dist/gcc/config/arm/linux-elf.h
- +++ gcc-3.4.1/gcc/config/arm/linux-elf.h
- @@ -30,17 +30,34 @@
- /* Do not assume anything about header files. */
- #define NO_IMPLICIT_EXTERN_C
-
- +/*
- + * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
- + * (big endian) configurations.
- + */
- +#if TARGET_BIG_ENDIAN_DEFAULT
- +#define TARGET_ENDIAN_DEFAULT ARM_FLAG_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
- +
- /* Default is to use APCS-32 mode. */
- #undef TARGET_DEFAULT
- -#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_MMU_TRAPS)
- +#define TARGET_DEFAULT \
- + ( ARM_FLAG_APCS_32 | \
- + ARM_FLAG_MMU_TRAPS | \
- + 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", "mapcs-32", "mno-thumb-interwork" }
- + { "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mapcs-32", "mno-thumb-interwork" }
-
- #define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
-
- @@ -101,7 +118,7 @@
- %{rdynamic:-export-dynamic} \
- %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \
- -X \
- - %{mbig-endian:-EB}" \
- + %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
- SUBTARGET_EXTRA_LINK_SPEC
- #endif
-
- --- gcc-3.4.1-dist/gcc/config.gcc
- +++ gcc-3.4.1/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 arm/aout.h arm/arm.h"
- + case $target in
- + arm*b-*)
- + tm_defines="TARGET_BIG_ENDIAN_DEFAULT=1 $tm_defines"
- + ;;
- + esac
- tmake_file="t-slibgcc-elf-ver t-linux arm/t-linux"
- extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
- gnu_ld=yes
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