By Lennert Buytenhek Adds support for arm*b-linux* big-endian ARM targets See http://gcc.gnu.org/PR16350 --- gcc-4.0.3/gcc/config/arm/linux-elf.h +++ gcc-4.0.3/gcc/config/arm/linux-elf.h @@ -31,19 +31,33 @@ /* 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 + #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" } /* The GNU C++ standard library requires that these macros be defined. */ #undef CPLUSPLUS_CPP_SPEC @@ -90,7 +104,7 @@ %{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 #define TARGET_OS_CPP_BUILTINS() \ --- gcc-4.0.3/gcc/config.gcc +++ gcc-4.0.3/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 $tm_defines" + ;; + esac tmake_file="${tmake_file} arm/t-arm arm/t-linux" extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o" gnu_ld=yes