/* Target-dependent code for FreeBSD, architecture-independent.
- Copyright (C) 2002-2019 Free Software Foundation, Inc.
+ Copyright (C) 2002-2022 Free Software Foundation, Inc.
This file is part of GDB.
#include "auxv.h"
#include "gdbcore.h"
#include "inferior.h"
+#include "objfiles.h"
#include "regcache.h"
#include "regset.h"
#include "gdbthread.h"
#include "elf-bfd.h"
#include "fbsd-tdep.h"
+#include "gcore-elf.h"
/* This enum is derived from FreeBSD's <sys/signal.h>. */
FREEBSD_SIGRTMAX = 126,
};
+/* Constants for values of si_code as defined in FreeBSD's
+ <sys/signal.h>. */
+
+#define FBSD_SI_USER 0x10001
+#define FBSD_SI_QUEUE 0x10002
+#define FBSD_SI_TIMER 0x10003
+#define FBSD_SI_ASYNCIO 0x10004
+#define FBSD_SI_MESGQ 0x10005
+#define FBSD_SI_KERNEL 0x10006
+#define FBSD_SI_LWP 0x10007
+
+#define FBSD_ILL_ILLOPC 1
+#define FBSD_ILL_ILLOPN 2
+#define FBSD_ILL_ILLADR 3
+#define FBSD_ILL_ILLTRP 4
+#define FBSD_ILL_PRVOPC 5
+#define FBSD_ILL_PRVREG 6
+#define FBSD_ILL_COPROC 7
+#define FBSD_ILL_BADSTK 8
+
+#define FBSD_BUS_ADRALN 1
+#define FBSD_BUS_ADRERR 2
+#define FBSD_BUS_OBJERR 3
+#define FBSD_BUS_OOMERR 100
+
+#define FBSD_SEGV_MAPERR 1
+#define FBSD_SEGV_ACCERR 2
+#define FBSD_SEGV_PKUERR 100
+
+#define FBSD_FPE_INTOVF 1
+#define FBSD_FPE_INTDIV 2
+#define FBSD_FPE_FLTDIV 3
+#define FBSD_FPE_FLTOVF 4
+#define FBSD_FPE_FLTUND 5
+#define FBSD_FPE_FLTRES 6
+#define FBSD_FPE_FLTINV 7
+#define FBSD_FPE_FLTSUB 8
+
+#define FBSD_TRAP_BRKPT 1
+#define FBSD_TRAP_TRACE 2
+#define FBSD_TRAP_DTRACE 3
+#define FBSD_TRAP_CAP 4
+
+#define FBSD_CLD_EXITED 1
+#define FBSD_CLD_KILLED 2
+#define FBSD_CLD_DUMPED 3
+#define FBSD_CLD_TRAPPED 4
+#define FBSD_CLD_STOPPED 5
+#define FBSD_CLD_CONTINUED 6
+
+#define FBSD_POLL_IN 1
+#define FBSD_POLL_OUT 2
+#define FBSD_POLL_MSG 3
+#define FBSD_POLL_ERR 4
+#define FBSD_POLL_PRI 5
+#define FBSD_POLL_HUP 6
+
/* FreeBSD kernels 12.0 and later include a copy of the
'ptrace_lwpinfo' structure returned by the PT_LWPINFO ptrace
operation in an ELF core note (NT_FREEBSD_PTLWPINFO) for each LWP.
all architectures.
Note that FreeBSD 7.0 used an older version of this structure
- (struct kinfo_ovmentry), but the NT_FREEBSD_PROCSTAT_VMMAP core
+ (struct kinfo_vmentry), but the NT_FREEBSD_PROCSTAT_VMMAP core
dump note wasn't introduced until FreeBSD 9.2. As a result, the
core dump note has always used the 7.1 and later structure
format. */
gdbarch_data (gdbarch, fbsd_gdbarch_data_handle));
}
-/* Per-program-space data for FreeBSD architectures. */
-static const struct program_space_data *fbsd_pspace_data_handle;
-
struct fbsd_pspace_data
{
/* Offsets in the runtime linker's 'Obj_Entry' structure. */
- LONGEST off_linkmap;
- LONGEST off_tlsindex;
- bool rtld_offsets_valid;
+ LONGEST off_linkmap = 0;
+ LONGEST off_tlsindex = 0;
+ bool rtld_offsets_valid = false;
};
+/* Per-program-space data for FreeBSD architectures. */
+static const struct program_space_key<fbsd_pspace_data>
+ fbsd_pspace_data_handle;
+
static struct fbsd_pspace_data *
get_fbsd_pspace_data (struct program_space *pspace)
{
struct fbsd_pspace_data *data;
- data = ((struct fbsd_pspace_data *)
- program_space_data (pspace, fbsd_pspace_data_handle));
+ data = fbsd_pspace_data_handle.get (pspace);
if (data == NULL)
- {
- data = XCNEW (struct fbsd_pspace_data);
- set_program_space_data (pspace, fbsd_pspace_data_handle, data);
- }
+ data = fbsd_pspace_data_handle.emplace (pspace);
return data;
}
-/* The cleanup callback for FreeBSD architecture per-program-space data. */
-
-static void
-fbsd_pspace_data_cleanup (struct program_space *pspace, void *data)
-{
- xfree (data);
-}
-
/* This is how we want PTIDs from core files to be printed. */
-static const char *
+static std::string
fbsd_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
{
- static char buf[80];
-
if (ptid.lwp () != 0)
- {
- xsnprintf (buf, sizeof buf, "LWP %ld", ptid.lwp ());
- return buf;
- }
+ return string_printf ("LWP %ld", ptid.lwp ());
return normal_pid_to_str (ptid);
}
thread_section_name section_name (".thrmisc", thr->ptid);
section = bfd_get_section_by_name (core_bfd, section_name.c_str ());
- if (section != NULL && bfd_section_size (core_bfd, section) > 0)
+ if (section != NULL && bfd_section_size (section) > 0)
{
/* Truncate the name if it is longer than "buf". */
- size = bfd_section_size (core_bfd, section);
+ size = bfd_section_size (section);
if (size > sizeof buf - 1)
size = sizeof buf - 1;
if (bfd_get_section_contents (core_bfd, section, buf, (file_ptr) 0,
LWPINFO_OFFSET + LWPINFO_PL_FLAGS, 4))
return -1;
- int pl_flags = extract_signed_integer (buf, 4, gdbarch_byte_order (gdbarch));
+ int pl_flags = extract_signed_integer (buf, gdbarch_byte_order (gdbarch));
if (!(pl_flags & PL_FLAG_SI))
return -1;
static int
find_signalled_thread (struct thread_info *info, void *data)
{
- if (info->suspend.stop_signal != GDB_SIGNAL_0
+ if (info->stop_signal () != GDB_SIGNAL_0
&& info->ptid.pid () == inferior_ptid.pid ())
return 1;
return 0;
}
-/* Structure for passing information from
- fbsd_collect_thread_registers via an iterator to
- fbsd_collect_regset_section_cb. */
-
-struct fbsd_collect_regset_section_cb_data
-{
- const struct regcache *regcache;
- bfd *obfd;
- char *note_data;
- int *note_size;
- unsigned long lwp;
- enum gdb_signal stop_signal;
- int abort_iteration;
-};
-
-static void
-fbsd_collect_regset_section_cb (const char *sect_name, int supply_size,
- int collect_size, const struct regset *regset,
- const char *human_name, void *cb_data)
-{
- char *buf;
- struct fbsd_collect_regset_section_cb_data *data
- = (struct fbsd_collect_regset_section_cb_data *) cb_data;
-
- if (data->abort_iteration)
- return;
-
- gdb_assert (regset->collect_regset);
-
- buf = (char *) xmalloc (collect_size);
- regset->collect_regset (regset, data->regcache, -1, buf, collect_size);
-
- /* PRSTATUS still needs to be treated specially. */
- if (strcmp (sect_name, ".reg") == 0)
- data->note_data = (char *) elfcore_write_prstatus
- (data->obfd, data->note_data, data->note_size, data->lwp,
- gdb_signal_to_host (data->stop_signal), buf);
- else
- data->note_data = (char *) elfcore_write_register_note
- (data->obfd, data->note_data, data->note_size,
- sect_name, buf, collect_size);
- xfree (buf);
-
- if (data->note_data == NULL)
- data->abort_iteration = 1;
-}
-
-/* Records the thread's register state for the corefile note
- section. */
-
-static char *
-fbsd_collect_thread_registers (const struct regcache *regcache,
- ptid_t ptid, bfd *obfd,
- char *note_data, int *note_size,
- enum gdb_signal stop_signal)
-{
- struct gdbarch *gdbarch = regcache->arch ();
- struct fbsd_collect_regset_section_cb_data data;
-
- data.regcache = regcache;
- data.obfd = obfd;
- data.note_data = note_data;
- data.note_size = note_size;
- data.stop_signal = stop_signal;
- data.abort_iteration = 0;
- data.lwp = ptid.lwp ();
-
- gdbarch_iterate_over_regset_sections (gdbarch,
- fbsd_collect_regset_section_cb,
- &data, regcache);
- return data.note_data;
-}
-
-struct fbsd_corefile_thread_data
-{
- struct gdbarch *gdbarch;
- bfd *obfd;
- char *note_data;
- int *note_size;
- enum gdb_signal stop_signal;
-};
-
-/* Records the thread's register state for the corefile note
- section. */
-
-static void
-fbsd_corefile_thread (struct thread_info *info,
- struct fbsd_corefile_thread_data *args)
-{
- struct regcache *regcache;
-
- regcache = get_thread_arch_regcache (info->ptid, args->gdbarch);
-
- target_fetch_registers (regcache, -1);
-
- args->note_data = fbsd_collect_thread_registers
- (regcache, info->ptid, args->obfd, args->note_data,
- args->note_size, args->stop_signal);
-}
-
/* Return a byte_vector containing the contents of a core dump note
for the target object of type OBJECT. If STRUCTSIZE is non-zero,
the data is prefixed with a 32-bit integer size to match the format
fbsd_make_note_desc (enum target_object object, uint32_t structsize)
{
gdb::optional<gdb::byte_vector> buf =
- target_read_alloc (current_top_target (), object, NULL);
+ target_read_alloc (current_inferior ()->top_target (), object, NULL);
if (!buf || buf->empty ())
return {};
/* Create appropriate note sections for a corefile, returning them in
allocated memory. */
-static char *
+static gdb::unique_xmalloc_ptr<char>
fbsd_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size)
{
- struct fbsd_corefile_thread_data thread_args;
- char *note_data = NULL;
+ gdb::unique_xmalloc_ptr<char> note_data;
Elf_Internal_Ehdr *i_ehdrp;
struct thread_info *curr_thr, *signalled_thr;
if (get_exec_file (0))
{
const char *fname = lbasename (get_exec_file (0));
- char *psargs = xstrdup (fname);
+ std::string psargs = fname;
- if (get_inferior_args ())
- psargs = reconcat (psargs, psargs, " ", get_inferior_args (),
- (char *) NULL);
+ const std::string &infargs = current_inferior ()->args ();
+ if (!infargs.empty ())
+ psargs += ' ' + infargs;
- note_data = elfcore_write_prpsinfo (obfd, note_data, note_size,
- fname, psargs);
+ note_data.reset (elfcore_write_prpsinfo (obfd, note_data.release (),
+ note_size, fname,
+ psargs.c_str ()));
}
/* Thread register information. */
- TRY
+ try
{
update_thread_list ();
}
- CATCH (e, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &e)
{
exception_print (gdb_stderr, e);
}
- END_CATCH
/* Like the kernel, prefer dumping the signalled thread first.
"First thread" is what tools use to infer the signalled thread.
In case there's more than one signalled thread, prefer the
current thread, if it is signalled. */
curr_thr = inferior_thread ();
- if (curr_thr->suspend.stop_signal != GDB_SIGNAL_0)
+ if (curr_thr->stop_signal () != GDB_SIGNAL_0)
signalled_thr = curr_thr;
else
{
signalled_thr = curr_thr;
}
- thread_args.gdbarch = gdbarch;
- thread_args.obfd = obfd;
- thread_args.note_data = note_data;
- thread_args.note_size = note_size;
- thread_args.stop_signal = signalled_thr->suspend.stop_signal;
-
- fbsd_corefile_thread (signalled_thr, &thread_args);
+ enum gdb_signal stop_signal = signalled_thr->stop_signal ();
+ gcore_elf_build_thread_register_notes (gdbarch, signalled_thr, stop_signal,
+ obfd, ¬e_data, note_size);
for (thread_info *thr : current_inferior ()->non_exited_threads ())
{
if (thr == signalled_thr)
continue;
- fbsd_corefile_thread (thr, &thread_args);
+ gcore_elf_build_thread_register_notes (gdbarch, thr, stop_signal,
+ obfd, ¬e_data, note_size);
}
- note_data = thread_args.note_data;
-
/* Auxiliary vector. */
uint32_t structsize = gdbarch_ptr_bit (gdbarch) / 4; /* Elf_Auxinfo */
gdb::optional<gdb::byte_vector> note_desc =
fbsd_make_note_desc (TARGET_OBJECT_AUXV, structsize);
if (note_desc && !note_desc->empty ())
{
- note_data = elfcore_write_note (obfd, note_data, note_size, "FreeBSD",
- NT_FREEBSD_PROCSTAT_AUXV,
- note_desc->data (), note_desc->size ());
+ note_data.reset (elfcore_write_note (obfd, note_data.release (),
+ note_size, "FreeBSD",
+ NT_FREEBSD_PROCSTAT_AUXV,
+ note_desc->data (),
+ note_desc->size ()));
if (!note_data)
return NULL;
}
note_desc = fbsd_make_note_desc (TARGET_OBJECT_FREEBSD_VMMAP, 0);
if (note_desc && !note_desc->empty ())
{
- note_data = elfcore_write_note (obfd, note_data, note_size, "FreeBSD",
- NT_FREEBSD_PROCSTAT_VMMAP,
- note_desc->data (), note_desc->size ());
+ note_data.reset (elfcore_write_note (obfd, note_data.release (),
+ note_size, "FreeBSD",
+ NT_FREEBSD_PROCSTAT_VMMAP,
+ note_desc->data (),
+ note_desc->size ()));
if (!note_data)
return NULL;
}
note_desc = fbsd_make_note_desc (TARGET_OBJECT_FREEBSD_PS_STRINGS, 0);
if (note_desc && !note_desc->empty ())
{
- note_data = elfcore_write_note (obfd, note_data, note_size, "FreeBSD",
- NT_FREEBSD_PROCSTAT_PSSTRINGS,
- note_desc->data (), note_desc->size ());
+ note_data.reset (elfcore_write_note (obfd, note_data.release (),
+ note_size, "FreeBSD",
+ NT_FREEBSD_PROCSTAT_PSSTRINGS,
+ note_desc->data (),
+ note_desc->size ()));
if (!note_data)
return NULL;
}
+ /* Include the target description when possible. */
+ gcore_elf_make_tdesc_note (obfd, ¬e_data, note_size);
+
return note_data;
}
/* For local sockets, print out the first non-nul path
rather than both paths. */
- const struct fbsd_sockaddr_un *sun
+ const struct fbsd_sockaddr_un *saddr_un
= reinterpret_cast<const struct fbsd_sockaddr_un *> (kf_sa_local);
- if (sun->sun_path[0] == 0)
- sun = reinterpret_cast<const struct fbsd_sockaddr_un *>
+ if (saddr_un->sun_path[0] == 0)
+ saddr_un = reinterpret_cast<const struct fbsd_sockaddr_un *>
(kf_sa_peer);
- printf_filtered ("%s", sun->sun_path);
+ printf_filtered ("%s", saddr_un->sun_path);
break;
}
case FBSD_AF_INET:
return;
}
- size_t note_size = bfd_get_section_size (section);
+ size_t note_size = bfd_section_size (section);
if (note_size < 4)
error (_("malformed core note - too short for header"));
return;
}
- note_size = bfd_get_section_size (section);
+ note_size = bfd_section_size (section);
if (note_size < 4)
error (_("malformed core note - too short for header"));
if (section == NULL)
return nullptr;
- note_size = bfd_get_section_size (section);
+ note_size = bfd_section_size (section);
if (note_size < 4)
error (_("malformed core note - too short for header"));
&& bfd_get_signed_32 (core_bfd, descdata + KF_FD) == fd)
{
char *path = (char *) descdata + KF_PATH;
- return gdb::unique_xmalloc_ptr<char> (xstrdup (path));
+ return make_unique_xstrdup (path);
}
descdata += structsize;
* structure size, then it must be long enough to access the last
* field used (ki_rusage_ch.ru_majflt) which is the size of a long.
*/
- note_size = bfd_get_section_size (section);
+ note_size = bfd_section_size (section);
if (note_size < (4 + kp->ki_rusage_ch + kp->ru_majflt
+ long_bit / TARGET_CHAR_BIT))
error (_("malformed core note - too short"));
sec, value);
printf_filtered ("stime, children: %s.%06d\n", plongest (sec), (int) value);
printf_filtered ("'nice' value: %d\n",
- bfd_get_signed_8 (core_bfd, descdata + kp->ki_nice));
+ (int) bfd_get_signed_8 (core_bfd, descdata + kp->ki_nice));
fbsd_core_fetch_timeval (gdbarch, descdata + kp->ki_start, sec, value);
printf_filtered ("Start time: %s.%06d\n", plongest (sec), (int) value);
printf_filtered ("Virtual memory size: %s kB\n",
TAG (EHDRFLAGS, _("ELF header e_flags"), AUXV_FORMAT_HEX);
TAG (HWCAP, _("Machine-dependent CPU capability hints"), AUXV_FORMAT_HEX);
TAG (HWCAP2, _("Extension of AT_HWCAP"), AUXV_FORMAT_HEX);
+ TAG (BSDFLAGS, _("ELF BSD flags"), AUXV_FORMAT_HEX);
+ TAG (ARGC, _("Argument count"), AUXV_FORMAT_DEC);
+ TAG (ARGV, _("Argument vector"), AUXV_FORMAT_HEX);
+ TAG (ENVC, _("Environment count"), AUXV_FORMAT_DEC);
+ TAG (ENVV, _("Environment vector"), AUXV_FORMAT_HEX);
+ TAG (PS_STRINGS, _("Pointer to ps_strings"), AUXV_FORMAT_HEX);
+ TAG (FXRNG, _("Pointer to root RNG seed version"), AUXV_FORMAT_HEX);
+ TAG (KPRELOAD, _("Base address of vDSO"), AUXV_FORMAT_HEX);
}
fprint_auxv_entry (file, name, description, format, type, val);
/* union sigval */
sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
- TYPE_NAME (sigval_type) = xstrdup ("sigval");
+ sigval_type->set_name (xstrdup ("sigval"));
append_composite_type_field (sigval_type, "sival_int", int_type);
append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
TYPE_LENGTH (int32_type) * TARGET_CHAR_BIT, "__pid_t");
TYPE_TARGET_TYPE (pid_type) = int32_type;
- TYPE_TARGET_STUB (pid_type) = 1;
+ pid_type->set_target_is_stub (true);
/* __uid_t */
uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
TYPE_LENGTH (uint32_type) * TARGET_CHAR_BIT,
"__uid_t");
TYPE_TARGET_TYPE (uid_type) = uint32_type;
- TYPE_TARGET_STUB (uid_type) = 1;
+ pid_type->set_target_is_stub (true);
/* _reason */
reason_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
/* struct siginfo */
siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
- TYPE_NAME (siginfo_type) = xstrdup ("siginfo");
+ siginfo_type->set_name (xstrdup ("siginfo"));
append_composite_type_field (siginfo_type, "si_signo", int_type);
append_composite_type_field (siginfo_type, "si_errno", int_type);
append_composite_type_field (siginfo_type, "si_code", int_type);
static int
fbsd_gdb_signal_to_target (struct gdbarch *gdbarch,
- enum gdb_signal signal)
+ enum gdb_signal signal)
{
switch (signal)
{
if (target_read_memory (BMSYMBOL_VALUE_ADDRESS (ms), buf, sizeof buf) != 0)
error (_("Unable to read value of '%s'"), name);
- return extract_signed_integer (buf, sizeof buf, gdbarch_byte_order (gdbarch));
+ return extract_signed_integer (buf, gdbarch_byte_order (gdbarch));
}
/* Lookup offsets of fields in the runtime linker's 'Obj_Entry'
static void
fbsd_fetch_rtld_offsets (struct gdbarch *gdbarch, struct fbsd_pspace_data *data)
{
- TRY
+ try
{
/* Fetch offsets from debug symbols in rtld. */
struct symbol *obj_entry_sym
language_c, NULL).symbol;
if (obj_entry_sym == NULL)
error (_("Unable to find Struct_Obj_Entry symbol"));
- data->off_linkmap = lookup_struct_elt (SYMBOL_TYPE(obj_entry_sym),
+ data->off_linkmap = lookup_struct_elt (SYMBOL_TYPE (obj_entry_sym),
"linkmap", 0).offset / 8;
- data->off_tlsindex = lookup_struct_elt (SYMBOL_TYPE(obj_entry_sym),
+ data->off_tlsindex = lookup_struct_elt (SYMBOL_TYPE (obj_entry_sym),
"tlsindex", 0).offset / 8;
data->rtld_offsets_valid = true;
return;
}
- CATCH (e, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &e)
{
data->off_linkmap = -1;
}
- END_CATCH
- TRY
+ try
{
/* Fetch offsets from global variables in libthr. Note that
this does not work for single-threaded processes that are not
data->rtld_offsets_valid = true;
return;
}
- CATCH (e, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &e)
{
data->off_linkmap = -1;
}
- END_CATCH
}
/* Helper function to read the TLS index of an object file associated
throw_error (TLS_GENERIC_ERROR,
_("Cannot find thread-local variables on this target"));
- return extract_signed_integer (buf, sizeof buf, gdbarch_byte_order (gdbarch));
+ return extract_signed_integer (buf, gdbarch_byte_order (gdbarch));
}
/* See fbsd-tdep.h. */
return addr + offset;
}
+/* See fbsd-tdep.h. */
+
+CORE_ADDR
+fbsd_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
+{
+ struct bound_minimal_symbol msym = lookup_bound_minimal_symbol ("_rtld_bind");
+ if (msym.minsym != nullptr && BMSYMBOL_VALUE_ADDRESS (msym) == pc)
+ return frame_unwind_caller_pc (get_current_frame ());
+
+ return 0;
+}
+
+/* Return description of signal code or nullptr. */
+
+static const char *
+fbsd_signal_cause (enum gdb_signal siggnal, int code)
+{
+ /* Signal-independent causes. */
+ switch (code)
+ {
+ case FBSD_SI_USER:
+ return _("Sent by kill()");
+ case FBSD_SI_QUEUE:
+ return _("Sent by sigqueue()");
+ case FBSD_SI_TIMER:
+ return _("Timer expired");
+ case FBSD_SI_ASYNCIO:
+ return _("Asynchronous I/O request completed");
+ case FBSD_SI_MESGQ:
+ return _("Message arrived on empty message queue");
+ case FBSD_SI_KERNEL:
+ return _("Sent by kernel");
+ case FBSD_SI_LWP:
+ return _("Sent by thr_kill()");
+ }
+
+ switch (siggnal)
+ {
+ case GDB_SIGNAL_ILL:
+ switch (code)
+ {
+ case FBSD_ILL_ILLOPC:
+ return _("Illegal opcode");
+ case FBSD_ILL_ILLOPN:
+ return _("Illegal operand");
+ case FBSD_ILL_ILLADR:
+ return _("Illegal addressing mode");
+ case FBSD_ILL_ILLTRP:
+ return _("Illegal trap");
+ case FBSD_ILL_PRVOPC:
+ return _("Privileged opcode");
+ case FBSD_ILL_PRVREG:
+ return _("Privileged register");
+ case FBSD_ILL_COPROC:
+ return _("Coprocessor error");
+ case FBSD_ILL_BADSTK:
+ return _("Internal stack error");
+ }
+ break;
+ case GDB_SIGNAL_BUS:
+ switch (code)
+ {
+ case FBSD_BUS_ADRALN:
+ return _("Invalid address alignment");
+ case FBSD_BUS_ADRERR:
+ return _("Address not present");
+ case FBSD_BUS_OBJERR:
+ return _("Object-specific hardware error");
+ case FBSD_BUS_OOMERR:
+ return _("Out of memory");
+ }
+ break;
+ case GDB_SIGNAL_SEGV:
+ switch (code)
+ {
+ case FBSD_SEGV_MAPERR:
+ return _("Address not mapped to object");
+ case FBSD_SEGV_ACCERR:
+ return _("Invalid permissions for mapped object");
+ case FBSD_SEGV_PKUERR:
+ return _("PKU violation");
+ }
+ break;
+ case GDB_SIGNAL_FPE:
+ switch (code)
+ {
+ case FBSD_FPE_INTOVF:
+ return _("Integer overflow");
+ case FBSD_FPE_INTDIV:
+ return _("Integer divide by zero");
+ case FBSD_FPE_FLTDIV:
+ return _("Floating point divide by zero");
+ case FBSD_FPE_FLTOVF:
+ return _("Floating point overflow");
+ case FBSD_FPE_FLTUND:
+ return _("Floating point underflow");
+ case FBSD_FPE_FLTRES:
+ return _("Floating point inexact result");
+ case FBSD_FPE_FLTINV:
+ return _("Invalid floating point operation");
+ case FBSD_FPE_FLTSUB:
+ return _("Subscript out of range");
+ }
+ break;
+ case GDB_SIGNAL_TRAP:
+ switch (code)
+ {
+ case FBSD_TRAP_BRKPT:
+ return _("Breakpoint");
+ case FBSD_TRAP_TRACE:
+ return _("Trace trap");
+ case FBSD_TRAP_DTRACE:
+ return _("DTrace-induced trap");
+ case FBSD_TRAP_CAP:
+ return _("Capability violation");
+ }
+ break;
+ case GDB_SIGNAL_CHLD:
+ switch (code)
+ {
+ case FBSD_CLD_EXITED:
+ return _("Child has exited");
+ case FBSD_CLD_KILLED:
+ return _("Child has terminated abnormally");
+ case FBSD_CLD_DUMPED:
+ return _("Child has dumped core");
+ case FBSD_CLD_TRAPPED:
+ return _("Traced child has trapped");
+ case FBSD_CLD_STOPPED:
+ return _("Child has stopped");
+ case FBSD_CLD_CONTINUED:
+ return _("Stopped child has continued");
+ }
+ break;
+ case GDB_SIGNAL_POLL:
+ switch (code)
+ {
+ case FBSD_POLL_IN:
+ return _("Data input available");
+ case FBSD_POLL_OUT:
+ return _("Output buffers available");
+ case FBSD_POLL_MSG:
+ return _("Input message available");
+ case FBSD_POLL_ERR:
+ return _("I/O error");
+ case FBSD_POLL_PRI:
+ return _("High priority input available");
+ case FBSD_POLL_HUP:
+ return _("Device disconnected");
+ }
+ break;
+ }
+
+ return nullptr;
+}
+
+/* Report additional details for a signal stop. */
+
+static void
+fbsd_report_signal_info (struct gdbarch *gdbarch, struct ui_out *uiout,
+ enum gdb_signal siggnal)
+{
+ LONGEST code, mqd, pid, status, timerid, uid;
+
+ try
+ {
+ code = parse_and_eval_long ("$_siginfo.si_code");
+ pid = parse_and_eval_long ("$_siginfo.si_pid");
+ uid = parse_and_eval_long ("$_siginfo.si_uid");
+ status = parse_and_eval_long ("$_siginfo.si_status");
+ timerid = parse_and_eval_long ("$_siginfo._reason._timer.si_timerid");
+ mqd = parse_and_eval_long ("$_siginfo._reason._mesgq.si_mqd");
+ }
+ catch (const gdb_exception_error &e)
+ {
+ return;
+ }
+
+ const char *meaning = fbsd_signal_cause (siggnal, code);
+ if (meaning == nullptr)
+ return;
+
+ uiout->text (".\n");
+ uiout->field_string ("sigcode-meaning", meaning);
+
+ switch (code)
+ {
+ case FBSD_SI_USER:
+ case FBSD_SI_QUEUE:
+ case FBSD_SI_LWP:
+ uiout->text (" from pid ");
+ uiout->field_string ("sending-pid", plongest (pid));
+ uiout->text (" and user ");
+ uiout->field_string ("sending-uid", plongest (uid));
+ return;
+ case FBSD_SI_TIMER:
+ uiout->text (": timerid ");
+ uiout->field_string ("timerid", plongest (timerid));
+ return;
+ case FBSD_SI_MESGQ:
+ uiout->text (": message queue ");
+ uiout->field_string ("message-queue", plongest (mqd));
+ return;
+ case FBSD_SI_ASYNCIO:
+ return;
+ }
+
+ if (siggnal == GDB_SIGNAL_CHLD)
+ {
+ uiout->text (": pid ");
+ uiout->field_string ("child-pid", plongest (pid));
+ uiout->text (", uid ");
+ uiout->field_string ("child-uid", plongest (uid));
+ if (code == FBSD_CLD_EXITED)
+ {
+ uiout->text (", exit status ");
+ uiout->field_string ("exit-status", plongest (status));
+ }
+ else
+ {
+ uiout->text (", signal ");
+ uiout->field_string ("signal", plongest (status));
+ }
+ }
+}
+
/* To be called from GDB_OSABI_FREEBSD handlers. */
void
set_gdbarch_get_siginfo_type (gdbarch, fbsd_get_siginfo_type);
set_gdbarch_gdb_signal_from_target (gdbarch, fbsd_gdb_signal_from_target);
set_gdbarch_gdb_signal_to_target (gdbarch, fbsd_gdb_signal_to_target);
+ set_gdbarch_report_signal_info (gdbarch, fbsd_report_signal_info);
+ set_gdbarch_skip_solib_resolver (gdbarch, fbsd_skip_solib_resolver);
/* `catch syscall' */
set_xml_syscall_file_name (gdbarch, "syscalls/freebsd.xml");
set_gdbarch_get_syscall_number (gdbarch, fbsd_get_syscall_number);
}
+void _initialize_fbsd_tdep ();
void
-_initialize_fbsd_tdep (void)
+_initialize_fbsd_tdep ()
{
fbsd_gdbarch_data_handle =
gdbarch_data_register_post_init (init_fbsd_gdbarch_data);
- fbsd_pspace_data_handle
- = register_program_space_data_with_cleanup (NULL, fbsd_pspace_data_cleanup);
}
projects / binutils-gdb.git / blobdiff