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ea5bc2a6 | 1 | /* Common target-dependent code for NetBSD systems. |
76a9d10f | 2 | |
b811d2c2 | 3 | Copyright (C) 2002-2020 Free Software Foundation, Inc. |
76a9d10f | 4 | |
ea5bc2a6 JT |
5 | Contributed by Wasabi Systems, Inc. |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ea5bc2a6 | 12 | (at your option) any later version. |
a9762ec7 | 13 | |
ea5bc2a6 JT |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
a9762ec7 | 18 | |
ea5bc2a6 | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
ea5bc2a6 JT |
21 | |
22 | #include "defs.h" | |
23 | #include "solib-svr4.h" | |
63807e1d | 24 | #include "nbsd-tdep.h" |
79743962 | 25 | #include "gdbarch.h" |
063f8e80 | 26 | #include "objfiles.h" |
ea5bc2a6 | 27 | |
76a9d10f MK |
28 | /* FIXME: kettenis/20060115: We should really eliminate the next two |
29 | functions completely. */ | |
ea5bc2a6 | 30 | |
ea5bc2a6 JT |
31 | struct link_map_offsets * |
32 | nbsd_ilp32_solib_svr4_fetch_link_map_offsets (void) | |
33 | { | |
76a9d10f | 34 | return svr4_ilp32_fetch_link_map_offsets (); |
ea5bc2a6 JT |
35 | } |
36 | ||
37 | struct link_map_offsets * | |
38 | nbsd_lp64_solib_svr4_fetch_link_map_offsets (void) | |
39 | { | |
76a9d10f | 40 | return svr4_lp64_fetch_link_map_offsets (); |
ea5bc2a6 | 41 | } |
3d9b49b0 JT |
42 | |
43 | int | |
2c02bd72 | 44 | nbsd_pc_in_sigtramp (CORE_ADDR pc, const char *func_name) |
3d9b49b0 JT |
45 | { |
46 | /* Check for libc-provided signal trampoline. All such trampolines | |
47 | have function names which begin with "__sigtramp". */ | |
48 | ||
49 | return (func_name != NULL | |
61012eef | 50 | && startswith (func_name, "__sigtramp")); |
3d9b49b0 | 51 | } |
79743962 KR |
52 | |
53 | /* This enum is derived from NETBSD's <sys/signal.h>. */ | |
54 | ||
55 | enum | |
56 | { | |
57 | NBSD_SIGHUP = 1, | |
58 | NBSD_SIGINT = 2, | |
59 | NBSD_SIGQUIT = 3, | |
60 | NBSD_SIGILL = 4, | |
61 | NBSD_SIGTRAP = 5, | |
62 | NBSD_SIGABRT = 6, | |
63 | NBSD_SIGEMT = 7, | |
64 | NBSD_SIGFPE = 8, | |
65 | NBSD_SIGKILL = 9, | |
66 | NBSD_SIGBUS = 10, | |
67 | NBSD_SIGSEGV = 11, | |
68 | NBSD_SIGSYS = 12, | |
69 | NBSD_SIGPIPE = 13, | |
70 | NBSD_SIGALRM = 14, | |
71 | NBSD_SIGTERM = 15, | |
72 | NBSD_SIGURG = 16, | |
73 | NBSD_SIGSTOP = 17, | |
74 | NBSD_SIGTSTP = 18, | |
75 | NBSD_SIGCONT = 19, | |
76 | NBSD_SIGCHLD = 20, | |
77 | NBSD_SIGTTIN = 21, | |
78 | NBSD_SIGTTOU = 22, | |
79 | NBSD_SIGIO = 23, | |
80 | NBSD_SIGXCPU = 24, | |
81 | NBSD_SIGXFSZ = 25, | |
82 | NBSD_SIGVTALRM = 26, | |
83 | NBSD_SIGPROF = 27, | |
84 | NBSD_SIGWINCH = 28, | |
85 | NBSD_SIGINFO = 29, | |
86 | NBSD_SIGUSR1 = 30, | |
87 | NBSD_SIGUSR2 = 31, | |
88 | NBSD_SIGPWR = 32, | |
89 | NBSD_SIGRTMIN = 33, | |
90 | NBSD_SIGRTMAX = 63, | |
91 | }; | |
92 | ||
93 | /* Implement the "gdb_signal_from_target" gdbarch method. */ | |
94 | ||
95 | static enum gdb_signal | |
96 | nbsd_gdb_signal_from_target (struct gdbarch *gdbarch, int signal) | |
97 | { | |
98 | switch (signal) | |
99 | { | |
100 | case 0: | |
101 | return GDB_SIGNAL_0; | |
102 | ||
103 | case NBSD_SIGHUP: | |
104 | return GDB_SIGNAL_HUP; | |
105 | ||
106 | case NBSD_SIGINT: | |
107 | return GDB_SIGNAL_INT; | |
108 | ||
109 | case NBSD_SIGQUIT: | |
110 | return GDB_SIGNAL_QUIT; | |
111 | ||
112 | case NBSD_SIGILL: | |
113 | return GDB_SIGNAL_ILL; | |
114 | ||
115 | case NBSD_SIGTRAP: | |
116 | return GDB_SIGNAL_TRAP; | |
117 | ||
118 | case NBSD_SIGABRT: | |
119 | return GDB_SIGNAL_ABRT; | |
120 | ||
121 | case NBSD_SIGEMT: | |
122 | return GDB_SIGNAL_EMT; | |
123 | ||
124 | case NBSD_SIGFPE: | |
125 | return GDB_SIGNAL_FPE; | |
126 | ||
127 | case NBSD_SIGKILL: | |
128 | return GDB_SIGNAL_KILL; | |
129 | ||
130 | case NBSD_SIGBUS: | |
131 | return GDB_SIGNAL_BUS; | |
132 | ||
133 | case NBSD_SIGSEGV: | |
134 | return GDB_SIGNAL_SEGV; | |
135 | ||
136 | case NBSD_SIGSYS: | |
137 | return GDB_SIGNAL_SYS; | |
138 | ||
139 | case NBSD_SIGPIPE: | |
140 | return GDB_SIGNAL_PIPE; | |
141 | ||
142 | case NBSD_SIGALRM: | |
143 | return GDB_SIGNAL_ALRM; | |
144 | ||
145 | case NBSD_SIGTERM: | |
146 | return GDB_SIGNAL_TERM; | |
147 | ||
148 | case NBSD_SIGURG: | |
149 | return GDB_SIGNAL_URG; | |
150 | ||
151 | case NBSD_SIGSTOP: | |
152 | return GDB_SIGNAL_STOP; | |
153 | ||
154 | case NBSD_SIGTSTP: | |
155 | return GDB_SIGNAL_TSTP; | |
156 | ||
157 | case NBSD_SIGCONT: | |
158 | return GDB_SIGNAL_CONT; | |
159 | ||
160 | case NBSD_SIGCHLD: | |
161 | return GDB_SIGNAL_CHLD; | |
162 | ||
163 | case NBSD_SIGTTIN: | |
164 | return GDB_SIGNAL_TTIN; | |
165 | ||
166 | case NBSD_SIGTTOU: | |
167 | return GDB_SIGNAL_TTOU; | |
168 | ||
169 | case NBSD_SIGIO: | |
170 | return GDB_SIGNAL_IO; | |
171 | ||
172 | case NBSD_SIGXCPU: | |
173 | return GDB_SIGNAL_XCPU; | |
174 | ||
175 | case NBSD_SIGXFSZ: | |
176 | return GDB_SIGNAL_XFSZ; | |
177 | ||
178 | case NBSD_SIGVTALRM: | |
179 | return GDB_SIGNAL_VTALRM; | |
180 | ||
181 | case NBSD_SIGPROF: | |
182 | return GDB_SIGNAL_PROF; | |
183 | ||
184 | case NBSD_SIGWINCH: | |
185 | return GDB_SIGNAL_WINCH; | |
186 | ||
187 | case NBSD_SIGINFO: | |
188 | return GDB_SIGNAL_INFO; | |
189 | ||
190 | case NBSD_SIGUSR1: | |
191 | return GDB_SIGNAL_USR1; | |
192 | ||
193 | case NBSD_SIGUSR2: | |
194 | return GDB_SIGNAL_USR2; | |
195 | ||
196 | case NBSD_SIGPWR: | |
197 | return GDB_SIGNAL_PWR; | |
198 | ||
199 | /* SIGRTMIN and SIGRTMAX are not continuous in <gdb/signals.def>, | |
200 | therefore we have to handle them here. */ | |
201 | case NBSD_SIGRTMIN: | |
202 | return GDB_SIGNAL_REALTIME_33; | |
203 | ||
204 | case NBSD_SIGRTMAX: | |
205 | return GDB_SIGNAL_REALTIME_63; | |
206 | } | |
207 | ||
208 | if (signal >= NBSD_SIGRTMIN + 1 && signal <= NBSD_SIGRTMAX - 1) | |
209 | { | |
210 | int offset = signal - NBSD_SIGRTMIN + 1; | |
211 | ||
212 | return (enum gdb_signal) ((int) GDB_SIGNAL_REALTIME_34 + offset); | |
213 | } | |
214 | ||
215 | return GDB_SIGNAL_UNKNOWN; | |
216 | } | |
217 | ||
218 | /* Implement the "gdb_signal_to_target" gdbarch method. */ | |
219 | ||
220 | static int | |
221 | nbsd_gdb_signal_to_target (struct gdbarch *gdbarch, | |
222 | enum gdb_signal signal) | |
223 | { | |
224 | switch (signal) | |
225 | { | |
226 | case GDB_SIGNAL_0: | |
227 | return 0; | |
228 | ||
229 | case GDB_SIGNAL_HUP: | |
230 | return NBSD_SIGHUP; | |
231 | ||
232 | case GDB_SIGNAL_INT: | |
233 | return NBSD_SIGINT; | |
234 | ||
235 | case GDB_SIGNAL_QUIT: | |
236 | return NBSD_SIGQUIT; | |
237 | ||
238 | case GDB_SIGNAL_ILL: | |
239 | return NBSD_SIGILL; | |
240 | ||
241 | case GDB_SIGNAL_TRAP: | |
242 | return NBSD_SIGTRAP; | |
243 | ||
244 | case GDB_SIGNAL_ABRT: | |
245 | return NBSD_SIGABRT; | |
246 | ||
247 | case GDB_SIGNAL_EMT: | |
248 | return NBSD_SIGEMT; | |
249 | ||
250 | case GDB_SIGNAL_FPE: | |
251 | return NBSD_SIGFPE; | |
252 | ||
253 | case GDB_SIGNAL_KILL: | |
254 | return NBSD_SIGKILL; | |
255 | ||
256 | case GDB_SIGNAL_BUS: | |
257 | return NBSD_SIGBUS; | |
258 | ||
259 | case GDB_SIGNAL_SEGV: | |
260 | return NBSD_SIGSEGV; | |
261 | ||
262 | case GDB_SIGNAL_SYS: | |
263 | return NBSD_SIGSYS; | |
264 | ||
265 | case GDB_SIGNAL_PIPE: | |
266 | return NBSD_SIGPIPE; | |
267 | ||
268 | case GDB_SIGNAL_ALRM: | |
269 | return NBSD_SIGALRM; | |
270 | ||
271 | case GDB_SIGNAL_TERM: | |
272 | return NBSD_SIGTERM; | |
273 | ||
274 | case GDB_SIGNAL_URG: | |
275 | return NBSD_SIGSTOP; | |
276 | ||
277 | case GDB_SIGNAL_TSTP: | |
278 | return NBSD_SIGTSTP; | |
279 | ||
280 | case GDB_SIGNAL_CONT: | |
281 | return NBSD_SIGCONT; | |
282 | ||
283 | case GDB_SIGNAL_CHLD: | |
284 | return NBSD_SIGCHLD; | |
285 | ||
286 | case GDB_SIGNAL_TTIN: | |
287 | return NBSD_SIGTTIN; | |
288 | ||
289 | case GDB_SIGNAL_TTOU: | |
290 | return NBSD_SIGTTOU; | |
291 | ||
292 | case GDB_SIGNAL_IO: | |
293 | return NBSD_SIGIO; | |
294 | ||
295 | case GDB_SIGNAL_XCPU: | |
296 | return NBSD_SIGXCPU; | |
297 | ||
298 | case GDB_SIGNAL_XFSZ: | |
299 | return NBSD_SIGXFSZ; | |
300 | ||
301 | case GDB_SIGNAL_VTALRM: | |
302 | return NBSD_SIGVTALRM; | |
303 | ||
304 | case GDB_SIGNAL_PROF: | |
305 | return NBSD_SIGPROF; | |
306 | ||
307 | case GDB_SIGNAL_WINCH: | |
308 | return NBSD_SIGWINCH; | |
309 | ||
310 | case GDB_SIGNAL_INFO: | |
311 | return NBSD_SIGINFO; | |
312 | ||
313 | case GDB_SIGNAL_USR1: | |
314 | return NBSD_SIGUSR1; | |
315 | ||
316 | case GDB_SIGNAL_USR2: | |
317 | return NBSD_SIGUSR2; | |
318 | ||
319 | case GDB_SIGNAL_PWR: | |
320 | return NBSD_SIGPWR; | |
321 | ||
322 | /* GDB_SIGNAL_REALTIME_33 is not continuous in <gdb/signals.def>, | |
323 | therefore we have to handle it here. */ | |
324 | case GDB_SIGNAL_REALTIME_33: | |
325 | return NBSD_SIGRTMIN; | |
326 | ||
327 | /* Same comment applies to _64. */ | |
328 | case GDB_SIGNAL_REALTIME_63: | |
329 | return NBSD_SIGRTMAX; | |
330 | } | |
331 | ||
332 | if (signal >= GDB_SIGNAL_REALTIME_34 | |
333 | && signal <= GDB_SIGNAL_REALTIME_62) | |
334 | { | |
335 | int offset = signal - GDB_SIGNAL_REALTIME_32; | |
336 | ||
337 | return NBSD_SIGRTMIN + 1 + offset; | |
338 | } | |
339 | ||
340 | return -1; | |
341 | } | |
342 | ||
063f8e80 KR |
343 | /* Shared library resolver handling. */ |
344 | ||
345 | static CORE_ADDR | |
346 | nbsd_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) | |
347 | { | |
348 | struct bound_minimal_symbol msym; | |
349 | ||
350 | msym = lookup_minimal_symbol ("_rtld_bind_start", NULL, NULL); | |
351 | if (msym.minsym && BMSYMBOL_VALUE_ADDRESS (msym) == pc) | |
352 | return frame_unwind_caller_pc (get_current_frame ()); | |
353 | else | |
354 | return find_solib_trampoline_target (get_current_frame (), pc); | |
355 | } | |
356 | ||
79743962 KR |
357 | /* See nbsd-tdep.h. */ |
358 | ||
359 | void | |
360 | nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
361 | { | |
362 | set_gdbarch_gdb_signal_from_target (gdbarch, nbsd_gdb_signal_from_target); | |
363 | set_gdbarch_gdb_signal_to_target (gdbarch, nbsd_gdb_signal_to_target); | |
063f8e80 | 364 | set_gdbarch_skip_solib_resolver (gdbarch, nbsd_skip_solib_resolver); |
79743962 | 365 | } |