1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/* Base configuration file for all NetBSD targets.
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* TARGET_OS_CPP_BUILTINS() common to all NetBSD targets. */
#define NETBSD_OS_CPP_BUILTINS_COMMON() \
do \
{ \
builtin_define ("__NetBSD__"); \
builtin_assert ("system=unix"); \
builtin_assert ("system=NetBSD"); \
} \
while (0)
/* CPP_SPEC parts common to all NetBSD targets. */
#define NETBSD_CPP_SPEC \
"%{posix:-D_POSIX_SOURCE} \
%{pthread:-D_REENTRANT -D_PTHREADS}"
/* NETBSD_NATIVE is defined when gcc is integrated into the NetBSD
source tree so it can be configured appropriately without using
the GNU configure/build mechanism. */
#ifdef NETBSD_NATIVE
/* Look for the include files in the system-defined places. */
#undef GPLUSPLUS_INCLUDE_DIR
#define GPLUSPLUS_INCLUDE_DIR "/usr/include/g++"
#undef GCC_INCLUDE_DIR
#define GCC_INCLUDE_DIR "/usr/include"
#undef INCLUDE_DEFAULTS
#define INCLUDE_DEFAULTS \
{ \
{ GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 }, \
{ GCC_INCLUDE_DIR, "GCC", 0, 0 }, \
{ 0, 0, 0, 0 } \
}
/* Under NetBSD, the normal location of the compiler back ends is the
/usr/libexec directory. */
#undef STANDARD_EXEC_PREFIX
#define STANDARD_EXEC_PREFIX "/usr/libexec/"
/* Under NetBSD, the normal location of the various *crt*.o files is the
/usr/lib directory. */
#undef STANDARD_STARTFILE_PREFIX
#define STANDARD_STARTFILE_PREFIX "/usr/lib/"
#endif /* NETBSD_NATIVE */
/* Provide a LIB_SPEC appropriate for NetBSD. Here we:
1. Select the appropriate set of libs, depending on whether we're
profiling.
2. Include the pthread library if -pthread is specified (only
if threads are enabled).
3. Include the posix library if -posix is specified.
FIXME: Could eliminate the duplication here if we were allowed to
use string concatenation. */
#ifdef NETBSD_ENABLE_PTHREADS
#define NETBSD_LIB_SPEC \
"%{pthread: \
%{!p: \
%{!pg:-lpthread}} \
%{p:-lpthread_p} \
%{pg:-lpthread_p}} \
%{posix: \
%{!p: \
%{!pg:-lposix}} \
%{p:-lposix_p} \
%{pg:-lposix_p}} \
%{!shared: \
%{!symbolic: \
%{!p: \
%{!pg:-lc}} \
%{p:-lc_p} \
%{pg:-lc_p}}}"
#else
#define NETBSD_LIB_SPEC \
"%{posix: \
%{!p: \
%{!pg:-lposix}} \
%{p:-lposix_p} \
%{pg:-lposix_p}} \
%{!shared: \
%{!symbolic: \
%{!p: \
%{!pg:-lc}} \
%{p:-lc_p} \
%{pg:-lc_p}}}"
#endif
#undef LIB_SPEC
#define LIB_SPEC NETBSD_LIB_SPEC
/* Provide a LIBGCC_SPEC appropriate for NetBSD. We also want to exclude
libgcc with -symbolic. */
#ifdef NETBSD_NATIVE
#define NETBSD_LIBGCC_SPEC \
"%{!symbolic: \
%{!shared: \
%{!p: \
%{!pg: -lgcc}}} \
%{shared: -lgcc_pic} \
%{p: -lgcc_p} \
%{pg: -lgcc_p}}"
#else
#define NETBSD_LIBGCC_SPEC "%{!shared:%{!symbolic: -lgcc}}"
#endif
#undef LIBGCC_SPEC
#define LIBGCC_SPEC NETBSD_LIBGCC_SPEC
/* When building shared libraries, the initialization and finalization
functions for the library are .init and .fini respectively. */
#define COLLECT_SHARED_INIT_FUNC(STREAM,FUNC) \
do { \
fprintf ((STREAM), "void __init() __asm__ (\".init\");"); \
fprintf ((STREAM), "void __init() {\n\t%s();\n}\n", (FUNC)); \
} while (0)
#define COLLECT_SHARED_FINI_FUNC(STREAM,FUNC) \
do { \
fprintf ((STREAM), "void __fini() __asm__ (\".fini\");"); \
fprintf ((STREAM), "void __fini() {\n\t%s();\n}\n", (FUNC)); \
} while (0)
#undef TARGET_HAS_F_SETLKW
#define TARGET_HAS_F_SETLKW
/* Implicit library calls should use memcpy, not bcopy, etc. */
#undef TARGET_MEM_FUNCTIONS
#define TARGET_MEM_FUNCTIONS 1
/* Handle #pragma weak and #pragma pack. */
#define HANDLE_SYSV_PRAGMA 1
/* Define some types that are the same on all NetBSD platforms,
making them agree with <machine/ansi.h>. */
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
#undef WINT_TYPE
#define WINT_TYPE "int"
/* Attempt to turn on execute permission for the stack. This may be
used by INITIALIZE_TRAMPOLINE of the target needs it (that is,
if the target machine can change execute permissions on a page).
There is no way to query the execute permission of the stack, so
we always issue the mprotect() call.
Note that we go out of our way to use namespace-non-invasive calls
here. Unfortunately, there is no libc-internal name for mprotect().
Also note that no errors should be emitted by this code; it is considered
dangerous for library calls to send messages to stdout/stderr. */
#define NETBSD_ENABLE_EXECUTE_STACK \
extern void __enable_execute_stack (void *); \
void \
__enable_execute_stack (void *addr) \
{ \
extern int mprotect (void *, size_t, int); \
extern int __sysctl (int *, unsigned int, void *, size_t *, \
void *, size_t); \
\
static int size; \
static long mask; \
\
char *page, *end; \
\
if (size == 0) \
{ \
int mib[2]; \
size_t len; \
\
mib[0] = 6; /* CTL_HW */ \
mib[1] = 7; /* HW_PAGESIZE */ \
len = sizeof (size); \
(void) __sysctl (mib, 2, &size, &len, NULL, 0); \
mask = ~((long) size - 1); \
} \
\
page = (char *) (((long) addr) & mask); \
end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
\
/* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
(void) mprotect (page, end - page, 7); \
}
|