1 /* nto-tdep.c - general QNX Neutrino target functionality.
3 Copyright (C) 2003-2004, 2007-2012 Free Software Foundation, Inc.
5 Contributed by QNX Software Systems Ltd.
7 This file is part of GDB.
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
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
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.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "gdb_string.h"
31 #include "solib-svr4.h"
38 #include <sys/cygwin.h>
42 static char default_nto_target[] = "C:\\QNXsdk\\target\\qnx6";
43 #elif defined(__sun__) || defined(linux)
44 static char default_nto_target[] = "/opt/QNXsdk/target/qnx6";
46 static char default_nto_target[] = "";
49 struct nto_target_ops current_nto_target;
54 char *p = getenv ("QNX_TARGET");
57 static char buf[PATH_MAX];
59 cygwin_conv_path (CCP_WIN_A_TO_POSIX, p, buf, PATH_MAX);
61 cygwin_conv_path (CCP_WIN_A_TO_POSIX, default_nto_target, buf, PATH_MAX);
64 return p ? p : default_nto_target;
68 /* Take a string such as i386, rs6000, etc. and map it onto CPUTYPE_X86,
69 CPUTYPE_PPC, etc. as defined in nto-share/dsmsgs.h. */
71 nto_map_arch_to_cputype (const char *arch)
73 if (!strcmp (arch, "i386") || !strcmp (arch, "x86"))
75 if (!strcmp (arch, "rs6000") || !strcmp (arch, "powerpc"))
77 if (!strcmp (arch, "mips"))
79 if (!strcmp (arch, "arm"))
81 if (!strcmp (arch, "sh"))
83 return CPUTYPE_UNKNOWN;
87 nto_find_and_open_solib (char *solib, unsigned o_flags, char **temp_pathname)
89 char *buf, *arch_path, *nto_root, *endian;
94 "%s/lib:%s/usr/lib:%s/usr/photon/lib:%s/usr/photon/dll:%s/lib/dll"
96 nto_root = nto_target ();
97 if (strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name, "i386") == 0)
102 else if (strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name,
104 || strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name,
112 arch = gdbarch_bfd_arch_info (target_gdbarch)->arch_name;
113 endian = gdbarch_byte_order (target_gdbarch)
114 == BFD_ENDIAN_BIG ? "be" : "le";
117 /* In case nto_root is short, add strlen(solib)
118 so we can reuse arch_path below. */
120 alloca (strlen (nto_root) + strlen (arch) + strlen (endian) + 2 +
122 sprintf (arch_path, "%s/%s%s", nto_root, arch, endian);
124 buf = alloca (strlen (PATH_FMT) + strlen (arch_path) * 5 + 1);
125 sprintf (buf, PATH_FMT, arch_path, arch_path, arch_path, arch_path,
128 base = lbasename (solib);
129 ret = openp (buf, 1, base, o_flags, temp_pathname);
130 if (ret < 0 && base != solib)
132 sprintf (arch_path, "/%s", solib);
133 ret = open (arch_path, o_flags, 0);
137 *temp_pathname = gdb_realpath (arch_path);
139 **temp_pathname = '\0';
146 nto_init_solib_absolute_prefix (void)
148 char buf[PATH_MAX * 2], arch_path[PATH_MAX];
149 char *nto_root, *endian;
152 nto_root = nto_target ();
153 if (strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name, "i386") == 0)
158 else if (strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name,
160 || strcmp (gdbarch_bfd_arch_info (target_gdbarch)->arch_name,
168 arch = gdbarch_bfd_arch_info (target_gdbarch)->arch_name;
169 endian = gdbarch_byte_order (target_gdbarch)
170 == BFD_ENDIAN_BIG ? "be" : "le";
173 sprintf (arch_path, "%s/%s%s", nto_root, arch, endian);
175 sprintf (buf, "set solib-absolute-prefix %s", arch_path);
176 execute_command (buf, 0);
180 nto_parse_redirection (char *pargv[], const char **pin, const char **pout,
184 char *in, *out, *err, *p;
187 for (n = 0; pargv[n]; n++);
194 argv = xcalloc (n + 1, sizeof argv[0]);
196 for (i = 0, n = 0; n < argc; n++)
215 else if (*p++ == '2' && *p++ == '>')
217 if (*p == '&' && *(p + 1) == '1')
225 argv[i++] = pargv[n];
233 /* The struct lm_info, lm_addr, and nto_truncate_ptr are copied from
234 solib-svr4.c to support nto_relocate_section_addresses
235 which is different from the svr4 version. */
237 /* Link map info to include in an allocated so_list entry */
241 /* Pointer to copy of link map from inferior. The type is char *
242 rather than void *, so that we may use byte offsets to find the
243 various fields without the need for a cast. */
246 /* Amount by which addresses in the binary should be relocated to
247 match the inferior. This could most often be taken directly
248 from lm, but when prelinking is involved and the prelink base
249 address changes, we may need a different offset, we want to
250 warn about the difference and compute it only once. */
253 /* The target location of lm. */
259 lm_addr (struct so_list *so)
261 if (so->lm_info->l_addr == (CORE_ADDR)-1)
263 struct link_map_offsets *lmo = nto_fetch_link_map_offsets ();
264 struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
266 so->lm_info->l_addr =
267 extract_typed_address (so->lm_info->lm + lmo->l_addr_offset, ptr_type);
269 return so->lm_info->l_addr;
273 nto_truncate_ptr (CORE_ADDR addr)
275 if (gdbarch_ptr_bit (target_gdbarch) == sizeof (CORE_ADDR) * 8)
276 /* We don't need to truncate anything, and the bit twiddling below
277 will fail due to overflow problems. */
280 return addr & (((CORE_ADDR) 1 << gdbarch_ptr_bit (target_gdbarch)) - 1);
283 static Elf_Internal_Phdr *
284 find_load_phdr (bfd *abfd)
286 Elf_Internal_Phdr *phdr;
289 if (!elf_tdata (abfd))
292 phdr = elf_tdata (abfd)->phdr;
293 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
295 if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_X))
302 nto_relocate_section_addresses (struct so_list *so, struct target_section *sec)
304 /* Neutrino treats the l_addr base address field in link.h as different than
305 the base address in the System V ABI and so the offset needs to be
306 calculated and applied to relocations. */
307 Elf_Internal_Phdr *phdr = find_load_phdr (sec->bfd);
308 unsigned vaddr = phdr ? phdr->p_vaddr : 0;
310 sec->addr = nto_truncate_ptr (sec->addr + lm_addr (so) - vaddr);
311 sec->endaddr = nto_truncate_ptr (sec->endaddr + lm_addr (so) - vaddr);
314 /* This is cheating a bit because our linker code is in libc.so. If we
315 ever implement lazy linking, this may need to be re-examined. */
317 nto_in_dynsym_resolve_code (CORE_ADDR pc)
319 if (in_plt_section (pc, NULL))
325 nto_dummy_supply_regset (struct regcache *regcache, char *regs)
331 nto_elf_osabi_sniffer (bfd *abfd)
333 if (nto_is_nto_target)
334 return nto_is_nto_target (abfd);
335 return GDB_OSABI_UNKNOWN;
338 static const char *nto_thread_state_str[] =
341 "RUNNING", /* 1 0x01 */
342 "READY", /* 2 0x02 */
343 "STOPPED", /* 3 0x03 */
345 "RECEIVE", /* 5 0x05 */
346 "REPLY", /* 6 0x06 */
347 "STACK", /* 7 0x07 */
348 "WAITTHREAD", /* 8 0x08 */
349 "WAITPAGE", /* 9 0x09 */
350 "SIGSUSPEND", /* 10 0x0a */
351 "SIGWAITINFO", /* 11 0x0b */
352 "NANOSLEEP", /* 12 0x0c */
353 "MUTEX", /* 13 0x0d */
354 "CONDVAR", /* 14 0x0e */
355 "JOIN", /* 15 0x0f */
356 "INTR", /* 16 0x10 */
358 "WAITCTX", /* 18 0x12 */
359 "NET_SEND", /* 19 0x13 */
360 "NET_REPLY" /* 20 0x14 */
364 nto_extra_thread_info (struct thread_info *ti)
366 if (ti && ti->private
367 && ti->private->state < ARRAY_SIZE (nto_thread_state_str))
368 return (char *)nto_thread_state_str [ti->private->state];
373 nto_initialize_signals (void)
375 /* We use SIG45 for pulses, or something, so nostop, noprint
377 signal_stop_update (gdb_signal_from_name ("SIG45"), 0);
378 signal_print_update (gdb_signal_from_name ("SIG45"), 0);
379 signal_pass_update (gdb_signal_from_name ("SIG45"), 1);
381 /* By default we don't want to stop on these two, but we do want to pass. */
382 #if defined(SIGSELECT)
383 signal_stop_update (SIGSELECT, 0);
384 signal_print_update (SIGSELECT, 0);
385 signal_pass_update (SIGSELECT, 1);
388 #if defined(SIGPHOTON)
389 signal_stop_update (SIGPHOTON, 0);
390 signal_print_update (SIGPHOTON, 0);
391 signal_pass_update (SIGPHOTON, 1);