1fa5ae1cd27b4565303ac9587067bfad655f74e3
[openwrt/svn-archive/archive.git] / toolchain / gcc / patches / 4.1.2 / 800-arm-bigendian.patch
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-4.1.0/gcc/config/arm/linux-elf.h
7 +++ gcc-4.1.0/gcc/config/arm/linux-elf.h
8 @@ -28,19 +28,33 @@
9 #undef TARGET_VERSION
10 #define TARGET_VERSION fputs (" (ARM GNU/Linux with ELF)", stderr);
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 MASK_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 /* Now we define the strings used to build the spec file. */
44 #undef LIB_SPEC
45 @@ -61,7 +75,7 @@
46 %{rdynamic:-export-dynamic} \
47 %{!dynamic-linker:-dynamic-linker " LINUX_TARGET_INTERPRETER "} \
48 -X \
49 - %{mbig-endian:-EB}" \
50 + %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
51 SUBTARGET_EXTRA_LINK_SPEC
52
53 #undef LINK_SPEC
54 --- gcc-4.1.0/gcc/config.gcc
55 +++ gcc-4.1.0/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"
60 + case $target in
61 + arm*b-*)
62 + tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
63 + ;;
64 + esac
65 tmake_file="${tmake_file} t-linux arm/t-arm"
66 case ${target} in
67 arm*-*-linux-gnueabi)