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Commit | Line | Data |
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9a57586f | 1 | /* Definitions of target machine for GNU compiler, |
88cad84b | 2 | for PowerPC machines running Linux. |
602ea4d3 | 3 | Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
617718f7 | 4 | 2004, 2005, 2006, 2007, 2010, 2011 Free Software Foundation, Inc. |
9a57586f MM |
5 | Contributed by Michael Meissner (meissner@cygnus.com). |
6 | ||
5de601cf | 7 | This file is part of GCC. |
9a57586f | 8 | |
5de601cf NC |
9 | GCC is free software; you can redistribute it and/or modify it |
10 | under the terms of the GNU General Public License as published | |
2f83c7d6 | 11 | by the Free Software Foundation; either version 3, or (at your |
5de601cf | 12 | option) any later version. |
9a57586f | 13 | |
5de601cf NC |
14 | GCC is distributed in the hope that it will be useful, but WITHOUT |
15 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
16 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
17 | License for more details. | |
9a57586f | 18 | |
5de601cf | 19 | You should have received a copy of the GNU General Public License |
2f83c7d6 NC |
20 | along with GCC; see the file COPYING3. If not see |
21 | <http://www.gnu.org/licenses/>. */ | |
9a57586f | 22 | |
bf276e5c AM |
23 | /* Linux doesn't support saving and restoring 64-bit regs in a 32-bit |
24 | process. */ | |
25 | #define OS_MISSING_POWERPC64 1 | |
26 | ||
71625f3d AM |
27 | /* We use glibc _mcount for profiling. */ |
28 | #define NO_PROFILE_COUNTERS 1 | |
29 | ||
b5a54c03 JM |
30 | #ifdef SINGLE_LIBC |
31 | #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC) | |
32 | #else | |
47089d42 | 33 | #define OPTION_GLIBC (linux_libc == LIBC_GLIBC) |
b5a54c03 | 34 | #endif |
47089d42 | 35 | |
bf276e5c AM |
36 | /* glibc has float and long double forms of math functions. */ |
37 | #undef TARGET_C99_FUNCTIONS | |
7bd85ce0 | 38 | #define TARGET_C99_FUNCTIONS (OPTION_GLIBC) |
bf276e5c | 39 | |
006339cd RG |
40 | /* Whether we have sincos that follows the GNU extension. */ |
41 | #undef TARGET_HAS_SINCOS | |
42 | #define TARGET_HAS_SINCOS (OPTION_GLIBC) | |
43 | ||
5de601cf | 44 | #undef TARGET_OS_CPP_BUILTINS |
c4ad648e AM |
45 | #define TARGET_OS_CPP_BUILTINS() \ |
46 | do \ | |
47 | { \ | |
48 | builtin_define_std ("PPC"); \ | |
49 | builtin_define_std ("powerpc"); \ | |
50 | builtin_assert ("cpu=powerpc"); \ | |
51 | builtin_assert ("machine=powerpc"); \ | |
52 | TARGET_OS_SYSV_CPP_BUILTINS (); \ | |
53 | } \ | |
7990b46f | 54 | while (0) |
9a57586f | 55 | |
373107aa FS |
56 | #undef CPP_OS_DEFAULT_SPEC |
57 | #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)" | |
58 | ||
437558e8 FS |
59 | /* The GNU C++ standard library currently requires _GNU_SOURCE being |
60 | defined on glibc-based systems. This temporary hack accomplishes this, | |
61 | it should go away as soon as libstdc++-v3 has a real fix. */ | |
5de601cf | 62 | #undef CPLUSPLUS_CPP_SPEC |
437558e8 FS |
63 | #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" |
64 | ||
5de601cf | 65 | #undef LINK_SHLIB_SPEC |
362c63a5 | 66 | #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}" |
9a57586f MM |
67 | |
68 | #undef LIB_DEFAULT_SPEC | |
0bc25b2b | 69 | #define LIB_DEFAULT_SPEC "%(lib_linux)" |
9a57586f MM |
70 | |
71 | #undef STARTFILE_DEFAULT_SPEC | |
0bc25b2b | 72 | #define STARTFILE_DEFAULT_SPEC "%(startfile_linux)" |
9a57586f MM |
73 | |
74 | #undef ENDFILE_DEFAULT_SPEC | |
0bc25b2b | 75 | #define ENDFILE_DEFAULT_SPEC "%(endfile_linux)" |
9a57586f | 76 | |
362c63a5 GK |
77 | #undef LINK_START_DEFAULT_SPEC |
78 | #define LINK_START_DEFAULT_SPEC "%(link_start_linux)" | |
79 | ||
80 | #undef LINK_OS_DEFAULT_SPEC | |
81 | #define LINK_OS_DEFAULT_SPEC "%(link_os_linux)" | |
82 | ||
42df2193 JJ |
83 | #define LINK_GCC_C_SEQUENCE_SPEC \ |
84 | "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" | |
85 | ||
8efcd34f AM |
86 | /* Use --as-needed -lgcc_s for eh support. */ |
87 | #ifdef HAVE_LD_AS_NEEDED | |
88 | #define USE_LD_AS_NEEDED 1 | |
89 | #endif | |
90 | ||
832ea3b3 | 91 | /* Override rs6000.h definition. */ |
5de601cf | 92 | #undef ASM_APP_ON |
832ea3b3 FS |
93 | #define ASM_APP_ON "#APP\n" |
94 | ||
95 | /* Override rs6000.h definition. */ | |
5de601cf | 96 | #undef ASM_APP_OFF |
832ea3b3 FS |
97 | #define ASM_APP_OFF "#NO_APP\n" |
98 | ||
6fa3f289 ZW |
99 | /* For backward compatibility, we must continue to use the AIX |
100 | structure return convention. */ | |
5de601cf | 101 | #undef DRAFT_V4_STRUCT_RET |
6fa3f289 ZW |
102 | #define DRAFT_V4_STRUCT_RET 1 |
103 | ||
9739c90c JJ |
104 | /* We are 32-bit all the time, so optimize a little. */ |
105 | #undef TARGET_64BIT | |
106 | #define TARGET_64BIT 0 | |
107 | ||
84dcde01 AM |
108 | /* We don't need to generate entries in .fixup, except when |
109 | -mrelocatable or -mrelocatable-lib is given. */ | |
9739c90c | 110 | #undef RELOCATABLE_NEEDS_FIXUP |
84dcde01 AM |
111 | #define RELOCATABLE_NEEDS_FIXUP \ |
112 | (target_flags & target_flags_explicit & MASK_RELOCATABLE) | |
9739c90c | 113 | |
4969c0d8 | 114 | #define TARGET_POSIX_IO |
c2cd64b5 | 115 | |
77008252 JJ |
116 | #ifdef TARGET_LIBC_PROVIDES_SSP |
117 | /* ppc32 glibc provides __stack_chk_guard in -0x7008(2). */ | |
118 | #define TARGET_THREAD_SSP_OFFSET -0x7008 | |
119 | #endif | |
602ea4d3 JJ |
120 | |
121 | #define POWERPC_LINUX | |
ed965309 JJ |
122 | |
123 | /* ppc linux has 128-bit long double support in glibc 2.4 and later. */ | |
124 | #ifdef TARGET_DEFAULT_LONG_DOUBLE_128 | |
125 | #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128 | |
126 | #endif | |
39acb18f EB |
127 | |
128 | /* Static stack checking is supported by means of probes. */ | |
129 | #define STACK_CHECK_STATIC_BUILTIN 1 |