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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 |