/* Target-dependent code for GNU/Linux, architecture independent.
- Copyright (C) 2009-2013 Free Software Foundation, Inc.
+ Copyright (C) 2009-2014 Free Software Foundation, Inc.
This file is part of GDB.
#include "cli/cli-utils.h"
#include "arch-utils.h"
#include "gdb_obstack.h"
+#include "observer.h"
#include <ctype.h>
+/* This enum represents the signals' numbers on a generic architecture
+ running the Linux kernel. The definition of "generic" comes from
+ the file <include/uapi/asm-generic/signal.h>, from the Linux kernel
+ tree, which is the "de facto" implementation of signal numbers to
+ be used by new architecture ports.
+
+ For those architectures which have differences between the generic
+ standard (e.g., Alpha), we define the different signals (and *only*
+ those) in the specific target-dependent file (e.g.,
+ alpha-linux-tdep.c, for Alpha). Please refer to the architecture's
+ tdep file for more information.
+
+ ARM deserves a special mention here. On the file
+ <arch/arm/include/uapi/asm/signal.h>, it defines only one different
+ (and ARM-only) signal, which is SIGSWI, with the same number as
+ SIGRTMIN. This signal is used only for a very specific target,
+ called ArthurOS (from RISCOS). Therefore, we do not handle it on
+ the ARM-tdep file, and we can safely use the generic signal handler
+ here for ARM targets.
+
+ As stated above, this enum is derived from
+ <include/uapi/asm-generic/signal.h>, from the Linux kernel
+ tree. */
+
+enum
+ {
+ LINUX_SIGHUP = 1,
+ LINUX_SIGINT = 2,
+ LINUX_SIGQUIT = 3,
+ LINUX_SIGILL = 4,
+ LINUX_SIGTRAP = 5,
+ LINUX_SIGABRT = 6,
+ LINUX_SIGIOT = 6,
+ LINUX_SIGBUS = 7,
+ LINUX_SIGFPE = 8,
+ LINUX_SIGKILL = 9,
+ LINUX_SIGUSR1 = 10,
+ LINUX_SIGSEGV = 11,
+ LINUX_SIGUSR2 = 12,
+ LINUX_SIGPIPE = 13,
+ LINUX_SIGALRM = 14,
+ LINUX_SIGTERM = 15,
+ LINUX_SIGSTKFLT = 16,
+ LINUX_SIGCHLD = 17,
+ LINUX_SIGCONT = 18,
+ LINUX_SIGSTOP = 19,
+ LINUX_SIGTSTP = 20,
+ LINUX_SIGTTIN = 21,
+ LINUX_SIGTTOU = 22,
+ LINUX_SIGURG = 23,
+ LINUX_SIGXCPU = 24,
+ LINUX_SIGXFSZ = 25,
+ LINUX_SIGVTALRM = 26,
+ LINUX_SIGPROF = 27,
+ LINUX_SIGWINCH = 28,
+ LINUX_SIGIO = 29,
+ LINUX_SIGPOLL = LINUX_SIGIO,
+ LINUX_SIGPWR = 30,
+ LINUX_SIGSYS = 31,
+ LINUX_SIGUNUSED = 31,
+
+ LINUX_SIGRTMIN = 32,
+ LINUX_SIGRTMAX = 64,
+ };
+
static struct gdbarch_data *linux_gdbarch_data_handle;
struct linux_gdbarch_data
return gdbarch_data (gdbarch, linux_gdbarch_data_handle);
}
+/* Per-inferior data key. */
+static const struct inferior_data *linux_inferior_data;
+
+/* Linux-specific cached data. This is used by GDB for caching
+ purposes for each inferior. This helps reduce the overhead of
+ transfering data from a remote target to the local host. */
+struct linux_info
+{
+ /* Cache of the inferior's vsyscall/vDSO mapping range. Only valid
+ if VSYSCALL_RANGE_P is positive. This is cached because getting
+ at this info requires an auxv lookup (which is itself cached),
+ and looking through the inferior's mappings (which change
+ throughout execution and therefore cannot be cached). */
+ struct mem_range vsyscall_range;
+
+ /* Zero if we haven't tried looking up the vsyscall's range before
+ yet. Positive if we tried looking it up, and found it. Negative
+ if we tried looking it up but failed. */
+ int vsyscall_range_p;
+};
+
+/* Frees whatever allocated space there is to be freed and sets INF's
+ linux cache data pointer to NULL. */
+
+static void
+invalidate_linux_cache_inf (struct inferior *inf)
+{
+ struct linux_info *info;
+
+ info = inferior_data (inf, linux_inferior_data);
+ if (info != NULL)
+ {
+ xfree (info);
+ set_inferior_data (inf, linux_inferior_data, NULL);
+ }
+}
+
+/* Handles the cleanup of the linux cache for inferior INF. ARG is
+ ignored. Callback for the inferior_appeared and inferior_exit
+ events. */
+
+static void
+linux_inferior_data_cleanup (struct inferior *inf, void *arg)
+{
+ invalidate_linux_cache_inf (inf);
+}
+
+/* Fetch the linux cache info for INF. This function always returns a
+ valid INFO pointer. */
+
+static struct linux_info *
+get_linux_inferior_data (void)
+{
+ struct linux_info *info;
+ struct inferior *inf = current_inferior ();
+
+ info = inferior_data (inf, linux_inferior_data);
+ if (info == NULL)
+ {
+ info = XCNEW (struct linux_info);
+ set_inferior_data (inf, linux_inferior_data, info);
+ }
+
+ return info;
+}
+
/* This function is suitable for architectures that don't
extend/override the standard siginfo structure. */
return siginfo_type;
}
-static int
-linux_has_shared_address_space (struct gdbarch *gdbarch)
+/* Return true if the target is running on uClinux instead of normal
+ Linux kernel. */
+
+int
+linux_is_uclinux (void)
{
- /* Determine whether we are running on uClinux or normal Linux
- kernel. */
CORE_ADDR dummy;
- int target_is_uclinux;
- target_is_uclinux
- = (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0
- && target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0);
+ return (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0
+ && target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0);
+}
- return target_is_uclinux;
+static int
+linux_has_shared_address_space (struct gdbarch *gdbarch)
+{
+ return linux_is_uclinux ();
}
/* This is how we want PTIDs from core files to be printed. */
p++;
*endaddr = strtoulst (p, &p, 16);
- while (*p && isspace (*p))
- p++;
+ p = skip_spaces_const (p);
*permissions = p;
while (*p && !isspace (*p))
p++;
*offset = strtoulst (p, &p, 16);
- while (*p && isspace (*p))
- p++;
+ p = skip_spaces_const (p);
*device = p;
while (*p && !isspace (*p))
p++;
*inode = strtoulst (p, &p, 10);
- while (*p && isspace (*p))
- p++;
+ p = skip_spaces_const (p);
*filename = p;
}
/* Implement the "info proc" command. */
static void
-linux_info_proc (struct gdbarch *gdbarch, char *args,
+linux_info_proc (struct gdbarch *gdbarch, const char *args,
enum info_proc_what what)
{
/* A long is used for pid instead of an int to avoid a loss of precision
int status_f = (what == IP_STATUS || what == IP_ALL);
int stat_f = (what == IP_STAT || what == IP_ALL);
char filename[100];
- gdb_byte *data;
+ char *data;
int target_errno;
if (args && isdigit (args[0]))
- pid = strtoul (args, &args, 10);
+ {
+ char *tem;
+
+ pid = strtoul (args, &tem, 10);
+ args = tem;
+ }
else
{
if (!target_has_execution)
pid = current_inferior ()->pid;
}
- args = skip_spaces (args);
+ args = skip_spaces_const (args);
if (args && args[0])
error (_("Too many parameters: %s"), args);
printf_filtered (_("Process: %s\n"),
pulongest (strtoulst (p, &p, 10)));
- while (*p && isspace (*p))
- p++;
+ p = skip_spaces_const (p);
if (*p == '(')
{
- const char *ep = strchr (p, ')');
+ /* ps command also relies on no trailing fields
+ ever contain ')'. */
+ const char *ep = strrchr (p, ')');
if (ep != NULL)
{
printf_filtered ("Exec file: %.*s\n",
}
}
- while (*p && isspace (*p))
- p++;
+ p = skip_spaces_const (p);
if (*p)
printf_filtered (_("State: %c\n"), *p++);
/* Implement "info proc mappings" for a corefile. */
static void
-linux_core_info_proc_mappings (struct gdbarch *gdbarch, char *args)
+linux_core_info_proc_mappings (struct gdbarch *gdbarch, const char *args)
{
asection *section;
ULONGEST count, page_size;
/* Implement "info proc" for a corefile. */
static void
-linux_core_info_proc (struct gdbarch *gdbarch, char *args,
+linux_core_info_proc (struct gdbarch *gdbarch, const char *args,
enum info_proc_what what)
{
int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL);
linux_find_memory_region_ftype *func,
void *obfd)
{
- char filename[100];
- gdb_byte *data;
+ char mapsfilename[100];
+ char *data;
/* We need to know the real target PID to access /proc. */
if (current_inferior ()->fake_pid_p)
return 1;
- xsnprintf (filename, sizeof filename,
+ xsnprintf (mapsfilename, sizeof mapsfilename,
"/proc/%d/smaps", current_inferior ()->pid);
- data = target_fileio_read_stralloc (filename);
+ data = target_fileio_read_stralloc (mapsfilename);
if (data == NULL)
{
/* Older Linux kernels did not support /proc/PID/smaps. */
- xsnprintf (filename, sizeof filename,
+ xsnprintf (mapsfilename, sizeof mapsfilename,
"/proc/%d/maps", current_inferior ()->pid);
- data = target_fileio_read_stralloc (filename);
+ data = target_fileio_read_stralloc (mapsfilename);
}
if (data)
{
line = strtok (NULL, "\n"))
{
char keyword[64 + 1];
- unsigned long number;
- if (sscanf (line, "%64s%lu kB\n", keyword, &number) != 2)
+ if (sscanf (line, "%64s", keyword) != 1)
{
- warning (_("Error parsing {s,}maps file '%s'"), filename);
+ warning (_("Error parsing {s,}maps file '%s'"), mapsfilename);
break;
}
if (strcmp (keyword, "Anonymous:") == 0)
has_anonymous = 1;
- if (number != 0 && (strcmp (keyword, "Shared_Dirty:") == 0
- || strcmp (keyword, "Private_Dirty:") == 0
- || strcmp (keyword, "Swap:") == 0
- || strcmp (keyword, "Anonymous:") == 0))
- modified = 1;
+ if (strcmp (keyword, "Shared_Dirty:") == 0
+ || strcmp (keyword, "Private_Dirty:") == 0
+ || strcmp (keyword, "Swap:") == 0
+ || strcmp (keyword, "Anonymous:") == 0)
+ {
+ unsigned long number;
+
+ if (sscanf (line, "%*s%lu", &number) != 1)
+ {
+ warning (_("Error parsing {s,}maps file '%s' number"),
+ mapsfilename);
+ break;
+ }
+ if (number != 0)
+ modified = 1;
+ }
}
/* Older Linux kernels did not support the "Anonymous:" counter.
if (mapping_data.file_count != 0)
{
/* Write the count to the obstack. */
- pack_long (obstack_base (&data_obstack), long_type,
- mapping_data.file_count);
+ pack_long ((gdb_byte *) obstack_base (&data_obstack),
+ long_type, mapping_data.file_count);
/* Copy the filenames to the data obstack. */
obstack_grow (&data_obstack, obstack_base (&filename_obstack),
return note_data;
}
+/* Structure for passing information from
+ linux_collect_thread_registers via an iterator to
+ linux_collect_regset_section_cb. */
+
+struct linux_collect_regset_section_cb_data
+{
+ struct gdbarch *gdbarch;
+ const struct regcache *regcache;
+ bfd *obfd;
+ char *note_data;
+ int *note_size;
+ unsigned long lwp;
+ enum gdb_signal stop_signal;
+ int abort_iteration;
+};
+
+/* Callback for iterate_over_regset_sections that records a single
+ regset in the corefile note section. */
+
+static void
+linux_collect_regset_section_cb (const char *sect_name, int size,
+ const struct regset *regset,
+ const char *human_name, void *cb_data)
+{
+ char *buf;
+ struct linux_collect_regset_section_cb_data *data = cb_data;
+
+ if (data->abort_iteration)
+ return;
+
+ gdb_assert (regset && regset->collect_regset);
+
+ buf = xmalloc (size);
+ regset->collect_regset (regset, data->regcache, -1, buf, 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, size);
+ xfree (buf);
+
+ if (data->note_data == NULL)
+ data->abort_iteration = 1;
+}
+
/* Records the thread's register state for the corefile note
section. */
enum gdb_signal stop_signal)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- struct core_regset_section *sect_list;
- unsigned long lwp;
+ struct linux_collect_regset_section_cb_data data;
- sect_list = gdbarch_core_regset_sections (gdbarch);
- gdb_assert (sect_list);
+ data.gdbarch = gdbarch;
+ 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;
/* For remote targets the LWP may not be available, so use the TID. */
- lwp = ptid_get_lwp (ptid);
- if (!lwp)
- lwp = ptid_get_tid (ptid);
-
- while (sect_list->sect_name != NULL)
- {
- const struct regset *regset;
- char *buf;
-
- regset = gdbarch_regset_from_core_section (gdbarch,
- sect_list->sect_name,
- sect_list->size);
- gdb_assert (regset && regset->collect_regset);
-
- buf = xmalloc (sect_list->size);
- regset->collect_regset (regset, regcache, -1, buf, sect_list->size);
-
- /* PRSTATUS still needs to be treated specially. */
- if (strcmp (sect_list->sect_name, ".reg") == 0)
- note_data = (char *) elfcore_write_prstatus
- (obfd, note_data, note_size, lwp,
- gdb_signal_to_host (stop_signal), buf);
- else
- note_data = (char *) elfcore_write_register_note
- (obfd, note_data, note_size,
- sect_list->sect_name, buf, sect_list->size);
- xfree (buf);
- sect_list++;
-
- if (!note_data)
- return NULL;
- }
-
- return note_data;
+ data.lwp = ptid_get_lwp (ptid);
+ if (!data.lwp)
+ data.lwp = ptid_get_tid (ptid);
+
+ gdbarch_iterate_over_regset_sections (gdbarch,
+ linux_collect_regset_section_cb,
+ &data, regcache);
+ return data.note_data;
}
/* Fetch the siginfo data for the current thread, if it exists. If
bfd *obfd;
char *note_data;
int *note_size;
- int num_notes;
enum gdb_signal stop_signal;
- linux_collect_thread_registers_ftype collect;
};
/* Called by gdbthread.c once per thread. Records the thread's
{
struct linux_corefile_thread_data *args = data;
+ /* It can be current thread
+ which cannot be removed by update_thread_list. */
+ if (info->state == THREAD_EXITED)
+ return 0;
+
if (ptid_get_pid (info->ptid) == args->pid)
{
struct cleanup *old_chain;
struct regcache *regcache;
gdb_byte *siginfo_data;
- LONGEST siginfo_size;
+ LONGEST siginfo_size = 0;
regcache = get_thread_arch_regcache (info->ptid, args->gdbarch);
old_chain = make_cleanup (xfree, siginfo_data);
- args->note_data = args->collect (regcache, info->ptid, args->obfd,
- args->note_data, args->note_size,
- args->stop_signal);
- args->num_notes++;
+ args->note_data = linux_collect_thread_registers
+ (regcache, info->ptid, args->obfd, args->note_data,
+ args->note_size, args->stop_signal);
- if (siginfo_data != NULL)
- {
+ /* Don't return anything if we got no register information above,
+ such a core file is useless. */
+ if (args->note_data != NULL)
+ if (siginfo_data != NULL)
args->note_data = elfcore_write_note (args->obfd,
args->note_data,
args->note_size,
"CORE", NT_SIGINFO,
siginfo_data, siginfo_size);
- args->num_notes++;
- }
do_cleanups (old_chain);
}
return !args->note_data;
}
-/* Fills the "to_make_corefile_note" target vector. Builds the note
- section for a corefile, and returns it in a malloc buffer. */
+/* Fill the PRPSINFO structure with information about the process being
+ debugged. Returns 1 in case of success, 0 for failures. Please note that
+ even if the structure cannot be entirely filled (e.g., GDB was unable to
+ gather information about the process UID/GID), this function will still
+ return 1 since some information was already recorded. It will only return
+ 0 iff nothing can be gathered. */
+
+static int
+linux_fill_prpsinfo (struct elf_internal_linux_prpsinfo *p)
+{
+ /* The filename which we will use to obtain some info about the process.
+ We will basically use this to store the `/proc/PID/FILENAME' file. */
+ char filename[100];
+ /* The full name of the program which generated the corefile. */
+ char *fname;
+ /* The basename of the executable. */
+ const char *basename;
+ /* The arguments of the program. */
+ char *psargs;
+ char *infargs;
+ /* The contents of `/proc/PID/stat' and `/proc/PID/status' files. */
+ char *proc_stat, *proc_status;
+ /* Temporary buffer. */
+ char *tmpstr;
+ /* The valid states of a process, according to the Linux kernel. */
+ const char valid_states[] = "RSDTZW";
+ /* The program state. */
+ const char *prog_state;
+ /* The state of the process. */
+ char pr_sname;
+ /* The PID of the program which generated the corefile. */
+ pid_t pid;
+ /* Process flags. */
+ unsigned int pr_flag;
+ /* Process nice value. */
+ long pr_nice;
+ /* The number of fields read by `sscanf'. */
+ int n_fields = 0;
+ /* Cleanups. */
+ struct cleanup *c;
+ int i;
+
+ gdb_assert (p != NULL);
+
+ /* Obtaining PID and filename. */
+ pid = ptid_get_pid (inferior_ptid);
+ xsnprintf (filename, sizeof (filename), "/proc/%d/cmdline", (int) pid);
+ fname = target_fileio_read_stralloc (filename);
+
+ if (fname == NULL || *fname == '\0')
+ {
+ /* No program name was read, so we won't be able to retrieve more
+ information about the process. */
+ xfree (fname);
+ return 0;
+ }
+
+ c = make_cleanup (xfree, fname);
+ memset (p, 0, sizeof (*p));
+
+ /* Defining the PID. */
+ p->pr_pid = pid;
+
+ /* Copying the program name. Only the basename matters. */
+ basename = lbasename (fname);
+ strncpy (p->pr_fname, basename, sizeof (p->pr_fname));
+ p->pr_fname[sizeof (p->pr_fname) - 1] = '\0';
+
+ infargs = get_inferior_args ();
+
+ psargs = xstrdup (fname);
+ if (infargs != NULL)
+ psargs = reconcat (psargs, psargs, " ", infargs, NULL);
+
+ make_cleanup (xfree, psargs);
+
+ strncpy (p->pr_psargs, psargs, sizeof (p->pr_psargs));
+ p->pr_psargs[sizeof (p->pr_psargs) - 1] = '\0';
+
+ xsnprintf (filename, sizeof (filename), "/proc/%d/stat", (int) pid);
+ proc_stat = target_fileio_read_stralloc (filename);
+ make_cleanup (xfree, proc_stat);
+
+ if (proc_stat == NULL || *proc_stat == '\0')
+ {
+ /* Despite being unable to read more information about the
+ process, we return 1 here because at least we have its
+ command line, PID and arguments. */
+ do_cleanups (c);
+ return 1;
+ }
+
+ /* Ok, we have the stats. It's time to do a little parsing of the
+ contents of the buffer, so that we end up reading what we want.
+
+ The following parsing mechanism is strongly based on the
+ information generated by the `fs/proc/array.c' file, present in
+ the Linux kernel tree. More details about how the information is
+ displayed can be obtained by seeing the manpage of proc(5),
+ specifically under the entry of `/proc/[pid]/stat'. */
+
+ /* Getting rid of the PID, since we already have it. */
+ while (isdigit (*proc_stat))
+ ++proc_stat;
+
+ proc_stat = skip_spaces (proc_stat);
+
+ /* ps command also relies on no trailing fields ever contain ')'. */
+ proc_stat = strrchr (proc_stat, ')');
+ if (proc_stat == NULL)
+ {
+ do_cleanups (c);
+ return 1;
+ }
+ proc_stat++;
+
+ proc_stat = skip_spaces (proc_stat);
+
+ n_fields = sscanf (proc_stat,
+ "%c" /* Process state. */
+ "%d%d%d" /* Parent PID, group ID, session ID. */
+ "%*d%*d" /* tty_nr, tpgid (not used). */
+ "%u" /* Flags. */
+ "%*s%*s%*s%*s" /* minflt, cminflt, majflt,
+ cmajflt (not used). */
+ "%*s%*s%*s%*s" /* utime, stime, cutime,
+ cstime (not used). */
+ "%*s" /* Priority (not used). */
+ "%ld", /* Nice. */
+ &pr_sname,
+ &p->pr_ppid, &p->pr_pgrp, &p->pr_sid,
+ &pr_flag,
+ &pr_nice);
+
+ if (n_fields != 6)
+ {
+ /* Again, we couldn't read the complementary information about
+ the process state. However, we already have minimal
+ information, so we just return 1 here. */
+ do_cleanups (c);
+ return 1;
+ }
+
+ /* Filling the structure fields. */
+ prog_state = strchr (valid_states, pr_sname);
+ if (prog_state != NULL)
+ p->pr_state = prog_state - valid_states;
+ else
+ {
+ /* Zero means "Running". */
+ p->pr_state = 0;
+ }
+
+ p->pr_sname = p->pr_state > 5 ? '.' : pr_sname;
+ p->pr_zomb = p->pr_sname == 'Z';
+ p->pr_nice = pr_nice;
+ p->pr_flag = pr_flag;
+
+ /* Finally, obtaining the UID and GID. For that, we read and parse the
+ contents of the `/proc/PID/status' file. */
+ xsnprintf (filename, sizeof (filename), "/proc/%d/status", (int) pid);
+ proc_status = target_fileio_read_stralloc (filename);
+ make_cleanup (xfree, proc_status);
+
+ if (proc_status == NULL || *proc_status == '\0')
+ {
+ /* Returning 1 since we already have a bunch of information. */
+ do_cleanups (c);
+ return 1;
+ }
+
+ /* Extracting the UID. */
+ tmpstr = strstr (proc_status, "Uid:");
+ if (tmpstr != NULL)
+ {
+ /* Advancing the pointer to the beginning of the UID. */
+ tmpstr += sizeof ("Uid:");
+ while (*tmpstr != '\0' && !isdigit (*tmpstr))
+ ++tmpstr;
+
+ if (isdigit (*tmpstr))
+ p->pr_uid = strtol (tmpstr, &tmpstr, 10);
+ }
+
+ /* Extracting the GID. */
+ tmpstr = strstr (proc_status, "Gid:");
+ if (tmpstr != NULL)
+ {
+ /* Advancing the pointer to the beginning of the GID. */
+ tmpstr += sizeof ("Gid:");
+ while (*tmpstr != '\0' && !isdigit (*tmpstr))
+ ++tmpstr;
+
+ if (isdigit (*tmpstr))
+ p->pr_gid = strtol (tmpstr, &tmpstr, 10);
+ }
+
+ do_cleanups (c);
+
+ return 1;
+}
+
+/* Build the note section for a corefile, and return it in a malloc
+ buffer. */
-char *
-linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size,
- linux_collect_thread_registers_ftype collect)
+static char *
+linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size)
{
struct linux_corefile_thread_data thread_args;
+ struct elf_internal_linux_prpsinfo prpsinfo;
char *note_data = NULL;
gdb_byte *auxv;
int auxv_len;
+ volatile struct gdb_exception e;
- /* Process information. */
- if (get_exec_file (0))
- {
- const char *fname = lbasename (get_exec_file (0));
- char *psargs = xstrdup (fname);
-
- if (get_inferior_args ())
- psargs = reconcat (psargs, psargs, " ", get_inferior_args (),
- (char *) NULL);
-
- note_data = elfcore_write_prpsinfo (obfd, note_data, note_size,
- fname, psargs);
- xfree (psargs);
+ if (! gdbarch_iterate_over_regset_sections_p (gdbarch))
+ return NULL;
- if (!note_data)
- return NULL;
+ if (linux_fill_prpsinfo (&prpsinfo))
+ {
+ if (gdbarch_elfcore_write_linux_prpsinfo_p (gdbarch))
+ {
+ note_data = gdbarch_elfcore_write_linux_prpsinfo (gdbarch, obfd,
+ note_data, note_size,
+ &prpsinfo);
+ }
+ else
+ {
+ if (gdbarch_ptr_bit (gdbarch) == 64)
+ note_data = elfcore_write_linux_prpsinfo64 (obfd,
+ note_data, note_size,
+ &prpsinfo);
+ else
+ note_data = elfcore_write_linux_prpsinfo32 (obfd,
+ note_data, note_size,
+ &prpsinfo);
+ }
}
/* Thread register information. */
+ TRY_CATCH (e, RETURN_MASK_ERROR)
+ {
+ update_thread_list ();
+ }
+ if (e.reason < 0)
+ exception_print (gdb_stderr, e);
thread_args.gdbarch = gdbarch;
thread_args.pid = ptid_get_pid (inferior_ptid);
thread_args.obfd = obfd;
thread_args.note_data = note_data;
thread_args.note_size = note_size;
- thread_args.num_notes = 0;
thread_args.stop_signal = find_stop_signal ();
- thread_args.collect = collect;
iterate_over_threads (linux_corefile_thread_callback, &thread_args);
note_data = thread_args.note_data;
if (!note_data)
note_data = linux_make_mappings_corefile_notes (gdbarch, obfd,
note_data, note_size);
- make_cleanup (xfree, note_data);
return note_data;
}
-static char *
-linux_make_corefile_notes_1 (struct gdbarch *gdbarch, bfd *obfd, int *note_size)
+/* Implementation of `gdbarch_gdb_signal_from_target', as defined in
+ gdbarch.h. This function is not static because it is exported to
+ other -tdep files. */
+
+enum gdb_signal
+linux_gdb_signal_from_target (struct gdbarch *gdbarch, int signal)
{
- /* FIXME: uweigand/2011-10-06: Once all GNU/Linux architectures have been
- converted to gdbarch_core_regset_sections, we no longer need to fall back
- to the target method at this point. */
+ switch (signal)
+ {
+ case 0:
+ return GDB_SIGNAL_0;
- if (!gdbarch_core_regset_sections (gdbarch))
- return target_make_corefile_notes (obfd, note_size);
- else
- return linux_make_corefile_notes (gdbarch, obfd, note_size,
- linux_collect_thread_registers);
+ case LINUX_SIGHUP:
+ return GDB_SIGNAL_HUP;
+
+ case LINUX_SIGINT:
+ return GDB_SIGNAL_INT;
+
+ case LINUX_SIGQUIT:
+ return GDB_SIGNAL_QUIT;
+
+ case LINUX_SIGILL:
+ return GDB_SIGNAL_ILL;
+
+ case LINUX_SIGTRAP:
+ return GDB_SIGNAL_TRAP;
+
+ case LINUX_SIGABRT:
+ return GDB_SIGNAL_ABRT;
+
+ case LINUX_SIGBUS:
+ return GDB_SIGNAL_BUS;
+
+ case LINUX_SIGFPE:
+ return GDB_SIGNAL_FPE;
+
+ case LINUX_SIGKILL:
+ return GDB_SIGNAL_KILL;
+
+ case LINUX_SIGUSR1:
+ return GDB_SIGNAL_USR1;
+
+ case LINUX_SIGSEGV:
+ return GDB_SIGNAL_SEGV;
+
+ case LINUX_SIGUSR2:
+ return GDB_SIGNAL_USR2;
+
+ case LINUX_SIGPIPE:
+ return GDB_SIGNAL_PIPE;
+
+ case LINUX_SIGALRM:
+ return GDB_SIGNAL_ALRM;
+
+ case LINUX_SIGTERM:
+ return GDB_SIGNAL_TERM;
+
+ case LINUX_SIGCHLD:
+ return GDB_SIGNAL_CHLD;
+
+ case LINUX_SIGCONT:
+ return GDB_SIGNAL_CONT;
+
+ case LINUX_SIGSTOP:
+ return GDB_SIGNAL_STOP;
+
+ case LINUX_SIGTSTP:
+ return GDB_SIGNAL_TSTP;
+
+ case LINUX_SIGTTIN:
+ return GDB_SIGNAL_TTIN;
+
+ case LINUX_SIGTTOU:
+ return GDB_SIGNAL_TTOU;
+
+ case LINUX_SIGURG:
+ return GDB_SIGNAL_URG;
+
+ case LINUX_SIGXCPU:
+ return GDB_SIGNAL_XCPU;
+
+ case LINUX_SIGXFSZ:
+ return GDB_SIGNAL_XFSZ;
+
+ case LINUX_SIGVTALRM:
+ return GDB_SIGNAL_VTALRM;
+
+ case LINUX_SIGPROF:
+ return GDB_SIGNAL_PROF;
+
+ case LINUX_SIGWINCH:
+ return GDB_SIGNAL_WINCH;
+
+ /* No way to differentiate between SIGIO and SIGPOLL.
+ Therefore, we just handle the first one. */
+ case LINUX_SIGIO:
+ return GDB_SIGNAL_IO;
+
+ case LINUX_SIGPWR:
+ return GDB_SIGNAL_PWR;
+
+ case LINUX_SIGSYS:
+ return GDB_SIGNAL_SYS;
+
+ /* SIGRTMIN and SIGRTMAX are not continuous in <gdb/signals.def>,
+ therefore we have to handle them here. */
+ case LINUX_SIGRTMIN:
+ return GDB_SIGNAL_REALTIME_32;
+
+ case LINUX_SIGRTMAX:
+ return GDB_SIGNAL_REALTIME_64;
+ }
+
+ if (signal >= LINUX_SIGRTMIN + 1 && signal <= LINUX_SIGRTMAX - 1)
+ {
+ int offset = signal - LINUX_SIGRTMIN + 1;
+
+ return (enum gdb_signal) ((int) GDB_SIGNAL_REALTIME_33 + offset);
+ }
+
+ return GDB_SIGNAL_UNKNOWN;
+}
+
+/* Implementation of `gdbarch_gdb_signal_to_target', as defined in
+ gdbarch.h. This function is not static because it is exported to
+ other -tdep files. */
+
+int
+linux_gdb_signal_to_target (struct gdbarch *gdbarch,
+ enum gdb_signal signal)
+{
+ switch (signal)
+ {
+ case GDB_SIGNAL_0:
+ return 0;
+
+ case GDB_SIGNAL_HUP:
+ return LINUX_SIGHUP;
+
+ case GDB_SIGNAL_INT:
+ return LINUX_SIGINT;
+
+ case GDB_SIGNAL_QUIT:
+ return LINUX_SIGQUIT;
+
+ case GDB_SIGNAL_ILL:
+ return LINUX_SIGILL;
+
+ case GDB_SIGNAL_TRAP:
+ return LINUX_SIGTRAP;
+
+ case GDB_SIGNAL_ABRT:
+ return LINUX_SIGABRT;
+
+ case GDB_SIGNAL_FPE:
+ return LINUX_SIGFPE;
+
+ case GDB_SIGNAL_KILL:
+ return LINUX_SIGKILL;
+
+ case GDB_SIGNAL_BUS:
+ return LINUX_SIGBUS;
+
+ case GDB_SIGNAL_SEGV:
+ return LINUX_SIGSEGV;
+
+ case GDB_SIGNAL_SYS:
+ return LINUX_SIGSYS;
+
+ case GDB_SIGNAL_PIPE:
+ return LINUX_SIGPIPE;
+
+ case GDB_SIGNAL_ALRM:
+ return LINUX_SIGALRM;
+
+ case GDB_SIGNAL_TERM:
+ return LINUX_SIGTERM;
+
+ case GDB_SIGNAL_URG:
+ return LINUX_SIGURG;
+
+ case GDB_SIGNAL_STOP:
+ return LINUX_SIGSTOP;
+
+ case GDB_SIGNAL_TSTP:
+ return LINUX_SIGTSTP;
+
+ case GDB_SIGNAL_CONT:
+ return LINUX_SIGCONT;
+
+ case GDB_SIGNAL_CHLD:
+ return LINUX_SIGCHLD;
+
+ case GDB_SIGNAL_TTIN:
+ return LINUX_SIGTTIN;
+
+ case GDB_SIGNAL_TTOU:
+ return LINUX_SIGTTOU;
+
+ case GDB_SIGNAL_IO:
+ return LINUX_SIGIO;
+
+ case GDB_SIGNAL_XCPU:
+ return LINUX_SIGXCPU;
+
+ case GDB_SIGNAL_XFSZ:
+ return LINUX_SIGXFSZ;
+
+ case GDB_SIGNAL_VTALRM:
+ return LINUX_SIGVTALRM;
+
+ case GDB_SIGNAL_PROF:
+ return LINUX_SIGPROF;
+
+ case GDB_SIGNAL_WINCH:
+ return LINUX_SIGWINCH;
+
+ case GDB_SIGNAL_USR1:
+ return LINUX_SIGUSR1;
+
+ case GDB_SIGNAL_USR2:
+ return LINUX_SIGUSR2;
+
+ case GDB_SIGNAL_PWR:
+ return LINUX_SIGPWR;
+
+ case GDB_SIGNAL_POLL:
+ return LINUX_SIGPOLL;
+
+ /* GDB_SIGNAL_REALTIME_32 is not continuous in <gdb/signals.def>,
+ therefore we have to handle it here. */
+ case GDB_SIGNAL_REALTIME_32:
+ return LINUX_SIGRTMIN;
+
+ /* Same comment applies to _64. */
+ case GDB_SIGNAL_REALTIME_64:
+ return LINUX_SIGRTMAX;
+ }
+
+ /* GDB_SIGNAL_REALTIME_33 to _64 are continuous. */
+ if (signal >= GDB_SIGNAL_REALTIME_33
+ && signal <= GDB_SIGNAL_REALTIME_63)
+ {
+ int offset = signal - GDB_SIGNAL_REALTIME_33;
+
+ return LINUX_SIGRTMIN + 1 + offset;
+ }
+
+ return -1;
+}
+
+/* Rummage through mappings to find a mapping's size. */
+
+static int
+find_mapping_size (CORE_ADDR vaddr, unsigned long size,
+ int read, int write, int exec, int modified,
+ void *data)
+{
+ struct mem_range *range = data;
+
+ if (vaddr == range->start)
+ {
+ range->length = size;
+ return 1;
+ }
+ return 0;
+}
+
+/* Helper for linux_vsyscall_range that does the real work of finding
+ the vsyscall's address range. */
+
+static int
+linux_vsyscall_range_raw (struct gdbarch *gdbarch, struct mem_range *range)
+{
+ if (target_auxv_search (¤t_target, AT_SYSINFO_EHDR, &range->start) <= 0)
+ return 0;
+
+ /* This is installed by linux_init_abi below, so should always be
+ available. */
+ gdb_assert (gdbarch_find_memory_regions_p (target_gdbarch ()));
+
+ range->length = 0;
+ gdbarch_find_memory_regions (gdbarch, find_mapping_size, range);
+ return 1;
+}
+
+/* Implementation of the "vsyscall_range" gdbarch hook. Handles
+ caching, and defers the real work to linux_vsyscall_range_raw. */
+
+static int
+linux_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range)
+{
+ struct linux_info *info = get_linux_inferior_data ();
+
+ if (info->vsyscall_range_p == 0)
+ {
+ if (linux_vsyscall_range_raw (gdbarch, &info->vsyscall_range))
+ info->vsyscall_range_p = 1;
+ else
+ info->vsyscall_range_p = -1;
+ }
+
+ if (info->vsyscall_range_p < 0)
+ return 0;
+
+ *range = info->vsyscall_range;
+ return 1;
}
/* To be called from the various GDB_OSABI_LINUX handlers for the
set_gdbarch_info_proc (gdbarch, linux_info_proc);
set_gdbarch_core_info_proc (gdbarch, linux_core_info_proc);
set_gdbarch_find_memory_regions (gdbarch, linux_find_memory_regions);
- set_gdbarch_make_corefile_notes (gdbarch, linux_make_corefile_notes_1);
+ set_gdbarch_make_corefile_notes (gdbarch, linux_make_corefile_notes);
set_gdbarch_has_shared_address_space (gdbarch,
linux_has_shared_address_space);
+ set_gdbarch_gdb_signal_from_target (gdbarch,
+ linux_gdb_signal_from_target);
+ set_gdbarch_gdb_signal_to_target (gdbarch,
+ linux_gdb_signal_to_target);
+ set_gdbarch_vsyscall_range (gdbarch, linux_vsyscall_range);
}
/* Provide a prototype to silence -Wmissing-prototypes. */
{
linux_gdbarch_data_handle =
gdbarch_data_register_post_init (init_linux_gdbarch_data);
+
+ /* Set a cache per-inferior. */
+ linux_inferior_data
+ = register_inferior_data_with_cleanup (NULL, linux_inferior_data_cleanup);
+ /* Observers used to invalidate the cache when needed. */
+ observer_attach_inferior_exit (invalidate_linux_cache_inf);
+ observer_attach_inferior_appeared (invalidate_linux_cache_inf);
}
projects / deliverable / binutils-gdb.git / blobdiff