By Lennert Buytenhek Adds support for arm*b-linux* big-endian ARM targets See http://gcc.gnu.org/PR16350 --- gcc-3.3.5-dist/gcc/config/arm/linux-elf.h +++ gcc-3.3.5/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__" @@ -100,7 +117,7 @@ %{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-3.3.5-dist/gcc/config.gcc +++ gcc-3.3.5/gcc/config.gcc @@ -710,6 +710,11 @@ ;; arm*-*-linux*) # ARM GNU/Linux with ELF tm_file="dbxelf.h elfos.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