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8433a25e RO |
1 | /* Operating system specific defines to be used when targeting GCC for any |
2 | Solaris 2 system. | |
ca11c37c | 3 | Copyright 2002, 2003 Free Software Foundation, Inc. |
8433a25e | 4 | |
814499a4 | 5 | This file is part of GCC. |
8433a25e | 6 | |
814499a4 | 7 | GCC is free software; you can redistribute it and/or modify |
8433a25e RO |
8 | it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
814499a4 | 12 | GCC is distributed in the hope that it will be useful, |
8433a25e RO |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
814499a4 | 18 | along with GCC; see the file COPYING. If not, write to |
8433a25e RO |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* We use stabs-in-elf for debugging, because that is what the native | |
23 | toolchain uses. */ | |
24 | #undef PREFERRED_DEBUGGING_TYPE | |
25 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG | |
26 | ||
27 | /* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t. */ | |
28 | #undef WCHAR_TYPE | |
29 | #define WCHAR_TYPE "long int" | |
30 | ||
31 | #undef WCHAR_TYPE_SIZE | |
32 | #define WCHAR_TYPE_SIZE BITS_PER_WORD | |
33 | ||
34 | /* Solaris 2 uses a wint_t different from the default. This is required | |
35 | by the SCD 2.4.1, p. 6-83, Figure 6-66. */ | |
36 | #undef WINT_TYPE | |
37 | #define WINT_TYPE "long int" | |
38 | ||
39 | #undef WINT_TYPE_SIZE | |
40 | #define WINT_TYPE_SIZE BITS_PER_WORD | |
41 | ||
42 | #define HANDLE_PRAGMA_REDEFINE_EXTNAME 1 | |
43 | ||
44 | /* ??? Note: in order for -compat-bsd to work fully, | |
45 | we must somehow arrange to fixincludes /usr/ucbinclude | |
46 | and put the result in $(libsubdir)/ucbinclude. */ | |
47 | ||
48 | #undef CPP_SUBTARGET_SPEC | |
49 | #define CPP_SUBTARGET_SPEC "\ | |
50 | %{pthreads:-D_REENTRANT -D_PTHREADS} \ | |
51 | %{!pthreads:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}} \ | |
52 | %{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \ | |
53 | " | |
54 | ||
55 | /* Names to predefine in the preprocessor for this target machine. */ | |
6508bdd5 | 56 | #define TARGET_SUB_OS_CPP_BUILTINS() |
8433a25e RO |
57 | #define TARGET_OS_CPP_BUILTINS() \ |
58 | do { \ | |
59 | builtin_define_std ("unix"); \ | |
60 | builtin_define_std ("sun"); \ | |
61 | builtin_define ("__svr4__"); \ | |
62 | builtin_define ("__SVR4"); \ | |
63 | builtin_define ("__PRAGMA_REDEFINE_EXTNAME"); \ | |
64 | builtin_assert ("system=unix"); \ | |
65 | builtin_assert ("system=svr4"); \ | |
6508bdd5 | 66 | /* For C++ we need to add some additional macro \ |
8433a25e RO |
67 | definitions required by the C++ standard \ |
68 | library. */ \ | |
04df6730 | 69 | if (c_dialect_cxx ()) \ |
8433a25e RO |
70 | { \ |
71 | builtin_define ("_XOPEN_SOURCE=500"); \ | |
72 | builtin_define ("_LARGEFILE_SOURCE=1"); \ | |
73 | builtin_define ("_LARGEFILE64_SOURCE=1"); \ | |
74 | builtin_define ("__EXTENSIONS__"); \ | |
75 | } \ | |
6508bdd5 | 76 | TARGET_SUB_OS_CPP_BUILTINS(); \ |
8433a25e RO |
77 | } while (0) |
78 | ||
b689848f | 79 | /* The system headers under Solaris 2 are C++-aware since 2.0. */ |
49fa0661 JM |
80 | #define NO_IMPLICIT_EXTERN_C |
81 | ||
8433a25e RO |
82 | /* The sun bundled assembler doesn't accept -Yd, (and neither does gas). |
83 | It's safe to pass -s always, even if -g is not used. */ | |
84 | #undef ASM_SPEC | |
85 | #define ASM_SPEC "\ | |
86 | %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \ | |
24a4dd31 | 87 | %{fpic|fpie|fPIC|fPIE:-K PIC} \ |
8433a25e RO |
88 | %(asm_cpu) \ |
89 | " | |
90 | ||
91 | /* We don't use the standard LIB_SPEC only because we don't yet support c++. */ | |
92 | #undef LIB_SPEC | |
93 | #define LIB_SPEC \ | |
94 | "%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \ | |
95 | %{!shared:\ | |
96 | %{!symbolic:\ | |
97 | %{pthreads:-lpthread} \ | |
98 | %{!pthreads:%{threads:-lthread}} \ | |
99 | %{p|pg:-ldl} -lc}}" | |
100 | ||
101 | #undef ENDFILE_SPEC | |
102 | #define ENDFILE_SPEC "crtend.o%s crtn.o%s" | |
103 | ||
104 | /* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us. */ | |
105 | #undef STARTFILE_SPEC | |
106 | #define STARTFILE_SPEC "%{!shared: \ | |
107 | %{!symbolic: \ | |
108 | %{p:mcrt1.o%s} \ | |
109 | %{!p: \ | |
110 | %{pg:gcrt1.o%s gmon.o%s} \ | |
111 | %{!pg:crt1.o%s}}}} \ | |
112 | crti.o%s %(startfile_arch) \ | |
113 | crtbegin.o%s" | |
114 | ||
115 | #undef STARTFILE_ARCH32_SPEC | |
116 | #define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \ | |
117 | %{!ansi:values-Xa.o%s}" | |
118 | ||
119 | #undef STARTFILE_ARCH_SPEC | |
120 | #define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC | |
121 | ||
61aaea23 MM |
122 | #undef LINK_ARCH32_SPEC_BASE |
123 | #define LINK_ARCH32_SPEC_BASE \ | |
8433a25e RO |
124 | "%{G:-G} \ |
125 | %{YP,*} \ | |
126 | %{R*} \ | |
127 | %{compat-bsd: \ | |
128 | %{!YP,*:%{p|pg:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \ | |
129 | %{!p:%{!pg:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}}} \ | |
130 | -R /usr/ucblib} \ | |
131 | %{!compat-bsd: \ | |
132 | %{!YP,*:%{p|pg:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \ | |
133 | %{!p:%{!pg:-Y P,/usr/ccs/lib:/usr/lib}}}}" | |
134 | ||
61aaea23 MM |
135 | #undef LINK_ARCH32_SPEC |
136 | #define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE | |
137 | ||
8433a25e RO |
138 | #undef LINK_ARCH_SPEC |
139 | #define LINK_ARCH_SPEC LINK_ARCH32_SPEC | |
140 | ||
141 | /* This should be the same as in svr4.h, except with -R added. */ | |
142 | #undef LINK_SPEC | |
143 | #define LINK_SPEC \ | |
144 | "%{h*} %{v:-V} \ | |
145 | %{b} %{Wl,*:%*} \ | |
146 | %{static:-dn -Bstatic} \ | |
147 | %{shared:-G -dy %{!mimpure-text:-z text}} \ | |
148 | %{symbolic:-Bsymbolic -G -dy -z text} \ | |
149 | %(link_arch) \ | |
150 | %{Qy:} %{!Qn:-Qy}" | |
151 | ||
152 | /* This defines which switch letters take arguments. | |
153 | It is as in svr4.h but with -R added. */ | |
154 | #undef SWITCH_TAKES_ARG | |
155 | #define SWITCH_TAKES_ARG(CHAR) \ | |
156 | (DEFAULT_SWITCH_TAKES_ARG(CHAR) \ | |
157 | || (CHAR) == 'R' \ | |
158 | || (CHAR) == 'h' \ | |
159 | || (CHAR) == 'z') | |
160 | ||
161 | #define STDC_0_IN_SYSTEM_HEADERS 1 | |
162 | \f | |
163 | /* | |
164 | * Attempt to turn on access permissions for the stack. | |
165 | * | |
166 | * This code must be defined when compiling gcc but not when compiling | |
167 | * libgcc2.a, unless we're generating code for 64-bit SPARC | |
168 | * | |
169 | * _SC_STACK_PROT is only defined for post 2.6, but we want this code | |
170 | * to run always. 2.6 can change the stack protection but has no way to | |
171 | * query it. | |
172 | * | |
173 | */ | |
174 | ||
ca11c37c ZW |
175 | /* sys/mman.h is not present on some non-Solaris configurations |
176 | that use sol2.h, so TRANSFER_FROM_TRAMPOLINE must use a magic | |
177 | number instead of the appropriate PROT_* flags. */ | |
8433a25e RO |
178 | |
179 | #define TRANSFER_FROM_TRAMPOLINE \ | |
180 | \ | |
181 | /* #define STACK_PROT_RWX (PROT_READ | PROT_WRITE | PROT_EXEC) */ \ | |
182 | \ | |
183 | static int need_enable_exec_stack; \ | |
184 | \ | |
185 | static void check_enabling(void) __attribute__ ((constructor)); \ | |
186 | static void check_enabling(void) \ | |
187 | { \ | |
188 | extern long sysconf(int); \ | |
189 | \ | |
190 | int prot = (int) sysconf(515 /* _SC_STACK_PROT */); \ | |
191 | if (prot != 7 /* STACK_PROT_RWX */) \ | |
192 | need_enable_exec_stack = 1; \ | |
193 | } \ | |
194 | \ | |
195 | extern void __enable_execute_stack (void *); \ | |
196 | void \ | |
197 | __enable_execute_stack (addr) \ | |
198 | void *addr; \ | |
199 | { \ | |
200 | if (!need_enable_exec_stack) \ | |
201 | return; \ | |
202 | else { \ | |
203 | long size = getpagesize (); \ | |
204 | long mask = ~(size-1); \ | |
205 | char *page = (char *) (((long) addr) & mask); \ | |
206 | char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \ | |
207 | \ | |
208 | if (mprotect (page, end - page, 7 /* STACK_PROT_RWX */) < 0) \ | |
209 | perror ("mprotect of trampoline code"); \ | |
210 | } \ | |
211 | } |