projects / ipfire-2.x.git / blame
| Commit | Line | Data |
|---|---|---|
| 1d4ec104 MT |
1 | By Lennert Buytenhek <buytenh@wantstofly.org> |
| 2 | Adds support for arm*b-linux* big-endian ARM targets | |
| 3 | ||
| 4 | See http://gcc.gnu.org/PR16350 | |
| 5 | ||
| 6 | --- gcc-4.0.3/gcc/config/arm/linux-elf.h | |
| 7 | +++ gcc-4.0.3/gcc/config/arm/linux-elf.h | |
| 8 | @@ -31,19 +31,33 @@ | |
| 9 | /* Do not assume anything about header files. */ | |
| 10 | #define NO_IMPLICIT_EXTERN_C | |
| 11 | ||
| 12 | +/* | |
| 13 | + * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-* | |
| 14 | + * (big endian) configurations. | |
| 15 | + */ | |
| 16 | +#if TARGET_BIG_ENDIAN_DEFAULT | |
| 17 | +#define TARGET_ENDIAN_DEFAULT ARM_FLAG_BIG_END | |
| 18 | +#define TARGET_ENDIAN_OPTION "mbig-endian" | |
| 19 | +#define TARGET_LINKER_EMULATION "armelfb_linux" | |
| 20 | +#else | |
| 21 | +#define TARGET_ENDIAN_DEFAULT 0 | |
| 22 | +#define TARGET_ENDIAN_OPTION "mlittle-endian" | |
| 23 | +#define TARGET_LINKER_EMULATION "armelf_linux" | |
| 24 | +#endif | |
| 25 | + | |
| 26 | #undef TARGET_DEFAULT_FLOAT_ABI | |
| 27 | #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD | |
| 28 | ||
| 29 | #undef TARGET_DEFAULT | |
| 30 | -#define TARGET_DEFAULT (0) | |
| 31 | +#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT) | |
| 32 | ||
| 33 | #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6 | |
| 34 | ||
| 35 | -#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p" | |
| 36 | +#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p" | |
| 37 | ||
| 38 | #undef MULTILIB_DEFAULTS | |
| 39 | #define MULTILIB_DEFAULTS \ | |
| 40 | - { "marm", "mlittle-endian", "mhard-float", "mno-thumb-interwork" } | |
| 41 | + { "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mno-thumb-interwork" } | |
| 42 | ||
| 43 | /* The GNU C++ standard library requires that these macros be defined. */ | |
| 44 | #undef CPLUSPLUS_CPP_SPEC | |
| 45 | @@ -90,7 +104,7 @@ | |
| 46 | %{rdynamic:-export-dynamic} \ | |
| 47 | %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \ | |
| 48 | -X \ | |
| 49 | - %{mbig-endian:-EB}" \ | |
| 50 | + %{mbig-endian:-EB} %{mlittle-endian:-EL}" \ | |
| 51 | SUBTARGET_EXTRA_LINK_SPEC | |
| 52 | ||
| 53 | #define TARGET_OS_CPP_BUILTINS() \ | |
| 54 | --- gcc-4.0.3/gcc/config.gcc | |
| 55 | +++ gcc-4.0.3/gcc/config.gcc | |
| 56 | @@ -672,6 +672,11 @@ | |
| 57 | ;; | |
| 58 | arm*-*-linux*) # ARM GNU/Linux with ELF | |
| 59 | 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" | |
| 60 | + case $target in | |
| 61 | + arm*b-*) | |
| 62 | + tm_defines="TARGET_BIG_ENDIAN_DEFAULT=1 $tm_defines" | |
| 63 | + ;; | |
| 64 | + esac | |
| 65 | tmake_file="${tmake_file} arm/t-arm arm/t-linux" | |
| 66 | extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o" | |
| 67 | gnu_ld=yes |