By Lennert Buytenhek 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 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" } /* 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)