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b355a481 | 1 | /* Definitions for ARM running Linux-based GNU systems using ELF |
23a5b65a | 2 | Copyright (C) 1993-2014 Free Software Foundation, Inc. |
b355a481 NC |
3 | Contributed by Philip Blundell <philb@gnu.org> |
4 | ||
4f448245 | 5 | This file is part of GCC. |
b355a481 | 6 | |
4f448245 NC |
7 | GCC is free software; you can redistribute it and/or modify it |
8 | under the terms of the GNU General Public License as published | |
2f83c7d6 | 9 | by the Free Software Foundation; either version 3, or (at your |
4f448245 | 10 | option) any later version. |
b355a481 | 11 | |
4f448245 NC |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT |
13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 | License for more details. | |
b355a481 | 16 | |
4f448245 | 17 | You should have received a copy of the GNU General Public License |
2f83c7d6 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
b355a481 | 20 | |
be393ecf NC |
21 | /* elfos.h should have already been included. Now just override |
22 | any conflicting definitions and add any extras. */ | |
23 | ||
b355a481 | 24 | /* Run-time Target Specification. */ |
3d8532aa PB |
25 | #undef TARGET_DEFAULT_FLOAT_ABI |
26 | #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD | |
27 | ||
d3a9662c BF |
28 | /* TARGET_BIG_ENDIAN_DEFAULT is set in |
29 | config.gcc for big endian configurations. */ | |
30 | #if TARGET_BIG_ENDIAN_DEFAULT | |
31 | #define TARGET_ENDIAN_DEFAULT MASK_BIG_END | |
32 | #define TARGET_ENDIAN_OPTION "mbig-endian" | |
33 | #define TARGET_LINKER_EMULATION "armelfb_linux" | |
34 | #else | |
35 | #define TARGET_ENDIAN_DEFAULT 0 | |
36 | #define TARGET_ENDIAN_OPTION "mlittle-endian" | |
37 | #define TARGET_LINKER_EMULATION "armelf_linux" | |
38 | #endif | |
39 | ||
be393ecf | 40 | #undef TARGET_DEFAULT |
d3a9662c | 41 | #define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT) |
be393ecf | 42 | |
192c8d78 RE |
43 | #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6 |
44 | ||
d3a9662c | 45 | #define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p" |
be393ecf | 46 | |
f8693faf MGD |
47 | /* We do not have any MULTILIB_OPTIONS specified, so there are no |
48 | MULTILIB_DEFAULTS. */ | |
be393ecf | 49 | #undef MULTILIB_DEFAULTS |
f5a1b0d2 | 50 | |
b355a481 | 51 | /* Now we define the strings used to build the spec file. */ |
6975bd2c | 52 | #undef LIB_SPEC |
f5a1b0d2 | 53 | #define LIB_SPEC \ |
17772b2a JJ |
54 | "%{pthread:-lpthread} \ |
55 | %{shared:-lc} \ | |
56 | %{!shared:%{profile:-lc_p}%{!profile:-lc}}" | |
078e19a4 | 57 | |
5e1b4d5a | 58 | #define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc" |
b355a481 | 59 | |
464aea98 | 60 | #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" |
077fc835 | 61 | |
43ee6785 | 62 | #define LINUX_TARGET_LINK_SPEC "%{h*} \ |
b355a481 NC |
63 | %{static:-Bstatic} \ |
64 | %{shared:-shared} \ | |
65 | %{symbolic:-Bsymbolic} \ | |
869fefb7 BC |
66 | %{!static: \ |
67 | %{rdynamic:-export-dynamic} \ | |
68 | -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \ | |
b355a481 | 69 | -X \ |
d3a9662c | 70 | %{mbig-endian:-EB} %{mlittle-endian:-EL}" \ |
b355a481 NC |
71 | SUBTARGET_EXTRA_LINK_SPEC |
72 | ||
077fc835 KH |
73 | #undef LINK_SPEC |
74 | #define LINK_SPEC LINUX_TARGET_LINK_SPEC | |
75 | ||
dc316086 PM |
76 | #define TARGET_OS_CPP_BUILTINS() \ |
77 | do \ | |
78 | { \ | |
107fd1c1 | 79 | GNU_USER_TARGET_OS_CPP_BUILTINS(); \ |
dc316086 PM |
80 | } \ |
81 | while (0) | |
b355a481 | 82 | |
b355a481 | 83 | /* This is how we tell the assembler that two symbols have the same value. */ |
be393ecf NC |
84 | #define ASM_OUTPUT_DEF(FILE, NAME1, NAME2) \ |
85 | do \ | |
86 | { \ | |
87 | assemble_name (FILE, NAME1); \ | |
88 | fputs (" = ", FILE); \ | |
89 | assemble_name (FILE, NAME2); \ | |
90 | fputc ('\n', FILE); \ | |
91 | } \ | |
92 | while (0) | |
863ebdad | 93 | |
29ad9694 | 94 | #undef FPUTYPE_DEFAULT |
0be8bd1a | 95 | #define FPUTYPE_DEFAULT "vfp" |
e68eda91 PB |
96 | |
97 | /* Call the function profiler with a given profile label. */ | |
d5b7b3ae RE |
98 | #undef ARM_FUNCTION_PROFILER |
99 | #define ARM_FUNCTION_PROFILER(STREAM, LABELNO) \ | |
e68eda91 | 100 | { \ |
f92ba6d1 DJ |
101 | fprintf (STREAM, "\tbl\tmcount%s\n", \ |
102 | (TARGET_ARM && NEED_PLT_RELOC) ? "(PLT)" : ""); \ | |
e68eda91 PB |
103 | } |
104 | ||
a15900b5 | 105 | /* The GNU/Linux profiler clobbers the link register. Make sure the |
2fbe6bc2 RE |
106 | prologue knows to save it. */ |
107 | #define PROFILE_HOOK(X) \ | |
c41c1387 | 108 | emit_clobber (gen_rtx_REG (SImode, LR_REGNUM)) |
2fbe6bc2 | 109 | |
a15900b5 | 110 | /* The GNU/Linux profiler needs a frame pointer. */ |
e3b5732b | 111 | #define SUBTARGET_FRAME_POINTER_REQUIRED crtl->profile |
978e411f CD |
112 | |
113 | /* Add .note.GNU-stack. */ | |
114 | #undef NEED_INDICATE_EXEC_STACK | |
115 | #define NEED_INDICATE_EXEC_STACK 1 |