| By Lennert Buytenhek <buytenh@wantstofly.org> |
| Adds support for arm*b-linux* big-endian ARM targets |
| |
| See http://gcc.gnu.org/PR16350 |
| |
| --- gcc-4.2.0/gcc/config/arm/linux-elf.h |
| +++ gcc-4.2.0/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 MASK_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_DYNAMIC_LINKER "} \ |
| -X \ |
| - %{mbig-endian:-EB}" \ |
| + %{mbig-endian:-EB} %{mlittle-endian:-EL}" \ |
| SUBTARGET_EXTRA_LINK_SPEC |
| |
| #undef LINK_SPEC |
| --- gcc-4.2.0/gcc/config.gcc.orig 2006-09-22 14:53:41.000000000 +0200 |
| +++ gcc-4.2.0/gcc/config.gcc 2006-09-25 10:45:21.000000000 +0200 |
| @@ -696,6 +696,11 @@ |
| tm_file="dbxelf.h elfos.h linux.h arm/elf.h arm/linux-gas.h arm/linux-elf.h" |
| tmake_file="${tmake_file} t-linux arm/t-arm" |
| case ${target} in |
| + arm*b-*) |
| + tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1" |
| + ;; |
| + esac |
| + case ${target} in |
| arm*-*-linux-*eabi) |
| tm_file="$tm_file arm/bpabi.h arm/linux-eabi.h" |
| tmake_file="$tmake_file arm/t-arm-elf arm/t-bpabi arm/t-linux-eabi" |
