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1b883d35 KW |
1 | /* nto-tdep.c - general QNX Neutrino target functionality. |
2 | ||
32d0add0 | 3 | Copyright (C) 2003-2015 Free Software Foundation, Inc. |
1b883d35 KW |
4 | |
5 | Contributed by QNX Software Systems Ltd. | |
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 |
1b883d35 KW |
12 | (at your option) any later version. |
13 | ||
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. | |
18 | ||
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/>. */ |
1b883d35 | 21 | |
b4d5ed91 | 22 | #include "defs.h" |
53ce3c39 | 23 | #include <sys/stat.h> |
1b883d35 KW |
24 | #include "nto-tdep.h" |
25 | #include "top.h" | |
1b883d35 | 26 | #include "inferior.h" |
45741a9c | 27 | #include "infrun.h" |
1b883d35 KW |
28 | #include "gdbarch.h" |
29 | #include "bfd.h" | |
30 | #include "elf-bfd.h" | |
31 | #include "solib-svr4.h" | |
32 | #include "gdbcore.h" | |
238ae9af UW |
33 | #include "objfiles.h" |
34 | ||
1b883d35 KW |
35 | #ifdef __CYGWIN__ |
36 | #include <sys/cygwin.h> | |
37 | #endif | |
38 | ||
39 | #ifdef __CYGWIN__ | |
40 | static char default_nto_target[] = "C:\\QNXsdk\\target\\qnx6"; | |
41 | #elif defined(__sun__) || defined(linux) | |
42 | static char default_nto_target[] = "/opt/QNXsdk/target/qnx6"; | |
43 | #else | |
44 | static char default_nto_target[] = ""; | |
45 | #endif | |
46 | ||
47 | struct nto_target_ops current_nto_target; | |
48 | ||
49 | static char * | |
50 | nto_target (void) | |
51 | { | |
52 | char *p = getenv ("QNX_TARGET"); | |
53 | ||
54 | #ifdef __CYGWIN__ | |
55 | static char buf[PATH_MAX]; | |
56 | if (p) | |
90375a0e | 57 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, p, buf, PATH_MAX); |
1b883d35 | 58 | else |
90375a0e | 59 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, default_nto_target, buf, PATH_MAX); |
1b883d35 KW |
60 | return buf; |
61 | #else | |
62 | return p ? p : default_nto_target; | |
63 | #endif | |
64 | } | |
65 | ||
66 | /* Take a string such as i386, rs6000, etc. and map it onto CPUTYPE_X86, | |
67 | CPUTYPE_PPC, etc. as defined in nto-share/dsmsgs.h. */ | |
68 | int | |
69 | nto_map_arch_to_cputype (const char *arch) | |
70 | { | |
71 | if (!strcmp (arch, "i386") || !strcmp (arch, "x86")) | |
72 | return CPUTYPE_X86; | |
192cdb19 | 73 | if (!strcmp (arch, "rs6000") || !strcmp (arch, "powerpc")) |
1b883d35 KW |
74 | return CPUTYPE_PPC; |
75 | if (!strcmp (arch, "mips")) | |
76 | return CPUTYPE_MIPS; | |
77 | if (!strcmp (arch, "arm")) | |
78 | return CPUTYPE_ARM; | |
79 | if (!strcmp (arch, "sh")) | |
80 | return CPUTYPE_SH; | |
81 | return CPUTYPE_UNKNOWN; | |
82 | } | |
83 | ||
84 | int | |
85 | nto_find_and_open_solib (char *solib, unsigned o_flags, char **temp_pathname) | |
86 | { | |
91495617 PA |
87 | char *buf, *arch_path, *nto_root, *endian; |
88 | const char *base; | |
1b883d35 | 89 | const char *arch; |
08850b56 | 90 | int arch_len, len, ret; |
0df8b418 MS |
91 | #define PATH_FMT \ |
92 | "%s/lib:%s/usr/lib:%s/usr/photon/lib:%s/usr/photon/dll:%s/lib/dll" | |
1b883d35 KW |
93 | |
94 | nto_root = nto_target (); | |
f5656ead | 95 | if (strcmp (gdbarch_bfd_arch_info (target_gdbarch ())->arch_name, "i386") == 0) |
1b883d35 KW |
96 | { |
97 | arch = "x86"; | |
98 | endian = ""; | |
99 | } | |
f5656ead | 100 | else if (strcmp (gdbarch_bfd_arch_info (target_gdbarch ())->arch_name, |
1143fffb | 101 | "rs6000") == 0 |
f5656ead | 102 | || strcmp (gdbarch_bfd_arch_info (target_gdbarch ())->arch_name, |
1143fffb | 103 | "powerpc") == 0) |
1b883d35 KW |
104 | { |
105 | arch = "ppc"; | |
106 | endian = "be"; | |
107 | } | |
108 | else | |
109 | { | |
f5656ead TT |
110 | arch = gdbarch_bfd_arch_info (target_gdbarch ())->arch_name; |
111 | endian = gdbarch_byte_order (target_gdbarch ()) | |
4c6b5505 | 112 | == BFD_ENDIAN_BIG ? "be" : "le"; |
1b883d35 KW |
113 | } |
114 | ||
d737fd7f KW |
115 | /* In case nto_root is short, add strlen(solib) |
116 | so we can reuse arch_path below. */ | |
1b883d35 | 117 | |
08850b56 PM |
118 | arch_len = (strlen (nto_root) + strlen (arch) + strlen (endian) + 2 |
119 | + strlen (solib)); | |
120 | arch_path = alloca (arch_len); | |
121 | xsnprintf (arch_path, arch_len, "%s/%s%s", nto_root, arch, endian); | |
122 | ||
123 | len = strlen (PATH_FMT) + strlen (arch_path) * 5 + 1; | |
124 | buf = alloca (len); | |
125 | xsnprintf (buf, len, PATH_FMT, arch_path, arch_path, arch_path, arch_path, | |
126 | arch_path); | |
1b883d35 | 127 | |
9f37bbcc | 128 | base = lbasename (solib); |
492c0ab7 JK |
129 | ret = openp (buf, OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, base, o_flags, |
130 | temp_pathname); | |
d737fd7f KW |
131 | if (ret < 0 && base != solib) |
132 | { | |
08850b56 | 133 | xsnprintf (arch_path, arch_len, "/%s", solib); |
d737fd7f KW |
134 | ret = open (arch_path, o_flags, 0); |
135 | if (temp_pathname) | |
136 | { | |
137 | if (ret >= 0) | |
138 | *temp_pathname = gdb_realpath (arch_path); | |
139 | else | |
2c571006 | 140 | *temp_pathname = NULL; |
d737fd7f KW |
141 | } |
142 | } | |
143 | return ret; | |
1b883d35 KW |
144 | } |
145 | ||
146 | void | |
147 | nto_init_solib_absolute_prefix (void) | |
148 | { | |
149 | char buf[PATH_MAX * 2], arch_path[PATH_MAX]; | |
150 | char *nto_root, *endian; | |
151 | const char *arch; | |
152 | ||
153 | nto_root = nto_target (); | |
f5656ead | 154 | if (strcmp (gdbarch_bfd_arch_info (target_gdbarch ())->arch_name, "i386") == 0) |
1b883d35 KW |
155 | { |
156 | arch = "x86"; | |
157 | endian = ""; | |
158 | } | |
f5656ead | 159 | else if (strcmp (gdbarch_bfd_arch_info (target_gdbarch ())->arch_name, |
1143fffb | 160 | "rs6000") == 0 |
f5656ead | 161 | || strcmp (gdbarch_bfd_arch_info (target_gdbarch ())->arch_name, |
1143fffb | 162 | "powerpc") == 0) |
1b883d35 KW |
163 | { |
164 | arch = "ppc"; | |
165 | endian = "be"; | |
166 | } | |
167 | else | |
168 | { | |
f5656ead TT |
169 | arch = gdbarch_bfd_arch_info (target_gdbarch ())->arch_name; |
170 | endian = gdbarch_byte_order (target_gdbarch ()) | |
4c6b5505 | 171 | == BFD_ENDIAN_BIG ? "be" : "le"; |
1b883d35 KW |
172 | } |
173 | ||
08850b56 | 174 | xsnprintf (arch_path, sizeof (arch_path), "%s/%s%s", nto_root, arch, endian); |
1b883d35 | 175 | |
08850b56 | 176 | xsnprintf (buf, sizeof (buf), "set solib-absolute-prefix %s", arch_path); |
1b883d35 KW |
177 | execute_command (buf, 0); |
178 | } | |
179 | ||
180 | char ** | |
14ef7606 AR |
181 | nto_parse_redirection (char *pargv[], const char **pin, const char **pout, |
182 | const char **perr) | |
1b883d35 KW |
183 | { |
184 | char **argv; | |
185 | char *in, *out, *err, *p; | |
186 | int argc, i, n; | |
187 | ||
188 | for (n = 0; pargv[n]; n++); | |
189 | if (n == 0) | |
190 | return NULL; | |
191 | in = ""; | |
192 | out = ""; | |
193 | err = ""; | |
194 | ||
195 | argv = xcalloc (n + 1, sizeof argv[0]); | |
196 | argc = n; | |
197 | for (i = 0, n = 0; n < argc; n++) | |
198 | { | |
199 | p = pargv[n]; | |
200 | if (*p == '>') | |
201 | { | |
202 | p++; | |
203 | if (*p) | |
204 | out = p; | |
205 | else | |
206 | out = pargv[++n]; | |
207 | } | |
208 | else if (*p == '<') | |
209 | { | |
210 | p++; | |
211 | if (*p) | |
212 | in = p; | |
213 | else | |
214 | in = pargv[++n]; | |
215 | } | |
216 | else if (*p++ == '2' && *p++ == '>') | |
217 | { | |
218 | if (*p == '&' && *(p + 1) == '1') | |
219 | err = out; | |
220 | else if (*p) | |
221 | err = p; | |
222 | else | |
223 | err = pargv[++n]; | |
224 | } | |
225 | else | |
226 | argv[i++] = pargv[n]; | |
227 | } | |
228 | *pin = in; | |
229 | *pout = out; | |
230 | *perr = err; | |
231 | return argv; | |
232 | } | |
233 | ||
b23518f0 | 234 | /* The struct lm_info, lm_addr, and nto_truncate_ptr are copied from |
1b883d35 KW |
235 | solib-svr4.c to support nto_relocate_section_addresses |
236 | which is different from the svr4 version. */ | |
237 | ||
ebd67d87 AR |
238 | /* Link map info to include in an allocated so_list entry */ |
239 | ||
1b883d35 | 240 | struct lm_info |
ebd67d87 AR |
241 | { |
242 | /* Pointer to copy of link map from inferior. The type is char * | |
243 | rather than void *, so that we may use byte offsets to find the | |
244 | various fields without the need for a cast. */ | |
245 | gdb_byte *lm; | |
246 | ||
247 | /* Amount by which addresses in the binary should be relocated to | |
248 | match the inferior. This could most often be taken directly | |
249 | from lm, but when prelinking is involved and the prelink base | |
250 | address changes, we may need a different offset, we want to | |
251 | warn about the difference and compute it only once. */ | |
252 | CORE_ADDR l_addr; | |
253 | ||
254 | /* The target location of lm. */ | |
255 | CORE_ADDR lm_addr; | |
256 | }; | |
257 | ||
1b883d35 KW |
258 | |
259 | static CORE_ADDR | |
b23518f0 | 260 | lm_addr (struct so_list *so) |
1b883d35 | 261 | { |
ebd67d87 AR |
262 | if (so->lm_info->l_addr == (CORE_ADDR)-1) |
263 | { | |
264 | struct link_map_offsets *lmo = nto_fetch_link_map_offsets (); | |
f5656ead | 265 | struct type *ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr; |
1b883d35 | 266 | |
ebd67d87 | 267 | so->lm_info->l_addr = |
b6da22b0 | 268 | extract_typed_address (so->lm_info->lm + lmo->l_addr_offset, ptr_type); |
ebd67d87 AR |
269 | } |
270 | return so->lm_info->l_addr; | |
1b883d35 KW |
271 | } |
272 | ||
273 | static CORE_ADDR | |
274 | nto_truncate_ptr (CORE_ADDR addr) | |
275 | { | |
f5656ead | 276 | if (gdbarch_ptr_bit (target_gdbarch ()) == sizeof (CORE_ADDR) * 8) |
1b883d35 KW |
277 | /* We don't need to truncate anything, and the bit twiddling below |
278 | will fail due to overflow problems. */ | |
279 | return addr; | |
280 | else | |
f5656ead | 281 | return addr & (((CORE_ADDR) 1 << gdbarch_ptr_bit (target_gdbarch ())) - 1); |
1b883d35 KW |
282 | } |
283 | ||
63807e1d | 284 | static Elf_Internal_Phdr * |
1b883d35 KW |
285 | find_load_phdr (bfd *abfd) |
286 | { | |
287 | Elf_Internal_Phdr *phdr; | |
288 | unsigned int i; | |
289 | ||
290 | if (!elf_tdata (abfd)) | |
291 | return NULL; | |
292 | ||
293 | phdr = elf_tdata (abfd)->phdr; | |
294 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
295 | { | |
296 | if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_X)) | |
297 | return phdr; | |
298 | } | |
299 | return NULL; | |
300 | } | |
301 | ||
302 | void | |
0542c86d | 303 | nto_relocate_section_addresses (struct so_list *so, struct target_section *sec) |
1b883d35 KW |
304 | { |
305 | /* Neutrino treats the l_addr base address field in link.h as different than | |
306 | the base address in the System V ABI and so the offset needs to be | |
307 | calculated and applied to relocations. */ | |
57e6060e | 308 | Elf_Internal_Phdr *phdr = find_load_phdr (sec->the_bfd_section->owner); |
1b883d35 KW |
309 | unsigned vaddr = phdr ? phdr->p_vaddr : 0; |
310 | ||
b23518f0 PM |
311 | sec->addr = nto_truncate_ptr (sec->addr + lm_addr (so) - vaddr); |
312 | sec->endaddr = nto_truncate_ptr (sec->endaddr + lm_addr (so) - vaddr); | |
1b883d35 KW |
313 | } |
314 | ||
d737fd7f KW |
315 | /* This is cheating a bit because our linker code is in libc.so. If we |
316 | ever implement lazy linking, this may need to be re-examined. */ | |
317 | int | |
318 | nto_in_dynsym_resolve_code (CORE_ADDR pc) | |
319 | { | |
3e5d3a5a | 320 | if (in_plt_section (pc)) |
d737fd7f KW |
321 | return 1; |
322 | return 0; | |
323 | } | |
324 | ||
d737fd7f | 325 | void |
468e3d51 | 326 | nto_dummy_supply_regset (struct regcache *regcache, char *regs) |
d737fd7f KW |
327 | { |
328 | /* Do nothing. */ | |
329 | } | |
330 | ||
331 | enum gdb_osabi | |
332 | nto_elf_osabi_sniffer (bfd *abfd) | |
333 | { | |
334 | if (nto_is_nto_target) | |
3d171c85 | 335 | return nto_is_nto_target (abfd); |
d737fd7f KW |
336 | return GDB_OSABI_UNKNOWN; |
337 | } | |
338 | ||
745a434e AR |
339 | static const char *nto_thread_state_str[] = |
340 | { | |
341 | "DEAD", /* 0 0x00 */ | |
342 | "RUNNING", /* 1 0x01 */ | |
343 | "READY", /* 2 0x02 */ | |
344 | "STOPPED", /* 3 0x03 */ | |
345 | "SEND", /* 4 0x04 */ | |
346 | "RECEIVE", /* 5 0x05 */ | |
347 | "REPLY", /* 6 0x06 */ | |
348 | "STACK", /* 7 0x07 */ | |
349 | "WAITTHREAD", /* 8 0x08 */ | |
350 | "WAITPAGE", /* 9 0x09 */ | |
351 | "SIGSUSPEND", /* 10 0x0a */ | |
352 | "SIGWAITINFO", /* 11 0x0b */ | |
353 | "NANOSLEEP", /* 12 0x0c */ | |
354 | "MUTEX", /* 13 0x0d */ | |
355 | "CONDVAR", /* 14 0x0e */ | |
356 | "JOIN", /* 15 0x0f */ | |
357 | "INTR", /* 16 0x10 */ | |
358 | "SEM", /* 17 0x11 */ | |
359 | "WAITCTX", /* 18 0x12 */ | |
360 | "NET_SEND", /* 19 0x13 */ | |
361 | "NET_REPLY" /* 20 0x14 */ | |
362 | }; | |
363 | ||
364 | char * | |
c15906d8 | 365 | nto_extra_thread_info (struct target_ops *self, struct thread_info *ti) |
745a434e | 366 | { |
fe978cb0 PA |
367 | if (ti && ti->priv |
368 | && ti->priv->state < ARRAY_SIZE (nto_thread_state_str)) | |
369 | return (char *)nto_thread_state_str [ti->priv->state]; | |
745a434e AR |
370 | return ""; |
371 | } | |
372 | ||
1b883d35 | 373 | void |
d737fd7f | 374 | nto_initialize_signals (void) |
1b883d35 | 375 | { |
1b883d35 KW |
376 | /* We use SIG45 for pulses, or something, so nostop, noprint |
377 | and pass them. */ | |
2ea28649 PA |
378 | signal_stop_update (gdb_signal_from_name ("SIG45"), 0); |
379 | signal_print_update (gdb_signal_from_name ("SIG45"), 0); | |
380 | signal_pass_update (gdb_signal_from_name ("SIG45"), 1); | |
1b883d35 KW |
381 | |
382 | /* By default we don't want to stop on these two, but we do want to pass. */ | |
383 | #if defined(SIGSELECT) | |
384 | signal_stop_update (SIGSELECT, 0); | |
385 | signal_print_update (SIGSELECT, 0); | |
386 | signal_pass_update (SIGSELECT, 1); | |
387 | #endif | |
388 | ||
389 | #if defined(SIGPHOTON) | |
390 | signal_stop_update (SIGPHOTON, 0); | |
391 | signal_print_update (SIGPHOTON, 0); | |
392 | signal_pass_update (SIGPHOTON, 1); | |
393 | #endif | |
d737fd7f | 394 | } |