Forgot to add these files. They are referent to the last commit,

"Implementing the catch syscall feature".

1 files changed, 432 insertions, 0 deletions

diff --git a/gdb/xml-syscall.c b/gdb/xml-syscall.c
new file mode 100644
index 00000000000..15bfe6fa18a
--- /dev/null
+++ b/gdb/xml-syscall.c
@@ -0,0 +1,432 @@
+/* Functions that provide the mechanism to parse a syscall XML file
+   and get its values.
+
+   Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+   1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008
+   Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "gdbtypes.h"
+#include "xml-support.h"
+#include "xml-syscall.h"
+
+/* For the struct syscall definition.  */
+#include "target.h"
+
+#include "filenames.h"
+
+#include "gdb_assert.h"
+
+#ifndef HAVE_LIBEXPAT
+
+/* Dummy functions to indicate that there's no support for fetching
+   syscalls information.  */
+
+static void
+syscall_warn_user (void)
+{
+  static int have_warned = 0;
+  if (!have_warned)
+    {
+      have_warned = 1;
+      warning (_("Can not parse XML syscalls information; XML support was "
+		 "disabled at compile time."));
+    }
+}
+
+void
+set_xml_syscall_file_name (const char *name)
+{
+  syscall_warn_user ();
+}
+
+void
+get_syscall_by_number (int syscall_number,
+                       struct syscall *s)
+{
+  syscall_warn_user ();
+  s->number = syscall_number;
+  s->name = NULL;
+}
+
+void
+get_syscall_by_name (const char *syscall_name,
+                     struct syscall *s)
+{
+  syscall_warn_user ();
+  s->number = UNKNOWN_SYSCALL;
+  s->name = syscall_name;
+}
+
+const char **
+get_syscall_names (void)
+{
+  syscall_warn_user ();
+  return NULL;
+}
+
+
+#else /* ! HAVE_LIBEXPAT */
+
+/* Structure which describes a syscall.  */
+typedef struct syscall_desc
+{
+  /* The syscall number.  */
+
+  int number;
+
+  /* The syscall name.  */
+
+  char *name;
+} *syscall_desc_p;
+DEF_VEC_P(syscall_desc_p);
+
+/* Structure that represents syscalls information.  */
+struct syscalls_info
+{
+  /* The syscalls.  */
+
+  VEC(syscall_desc_p) *syscalls;
+};
+
+/* Callback data for syscall information parsing.  */
+struct syscall_parsing_data
+{
+  /* The syscalls_info we are building.  */
+
+  struct syscalls_info *sysinfo;
+};
+
+/* Structure used to store information about the available syscalls in
+   the system.  */
+static const struct syscalls_info *_sysinfo = NULL;
+
+/* A flag to tell if we already initialized the structure above.  */
+static int have_initialized_sysinfo = 0;
+
+/* The filename of the syscall's XML.  */
+static const char *xml_syscall_file = NULL;
+
+static struct syscalls_info *
+allocate_syscalls_info (void)
+{
+  return XZALLOC (struct syscalls_info);
+}
+
+static void
+sysinfo_free_syscalls_desc (struct syscall_desc *sd)
+{
+  xfree (sd->name);
+}
+
+static void
+free_syscalls_info (void *arg)
+{
+  struct syscalls_info *sysinfo = arg;
+  struct syscall_desc *sysdesc;
+  int i;
+
+  for (i = 0;
+       VEC_iterate (syscall_desc_p, sysinfo->syscalls, i, sysdesc);
+       i++)
+    sysinfo_free_syscalls_desc (sysdesc);
+  VEC_free (syscall_desc_p, sysinfo->syscalls);
+
+  xfree (sysinfo);
+}
+
+struct cleanup *
+make_cleanup_free_syscalls_info (struct syscalls_info *sysinfo)
+{
+  return make_cleanup (free_syscalls_info, sysinfo);
+}
+
+static void
+syscall_create_syscall_desc (struct syscalls_info *sysinfo,
+                             const char *name, int number)
+{
+  struct syscall_desc *sysdesc = XZALLOC (struct syscall_desc);
+
+  sysdesc->name = xstrdup (name);
+  sysdesc->number = number;
+
+  VEC_safe_push (syscall_desc_p, sysinfo->syscalls, sysdesc);
+}
+
+/* Handle the start of a <syscalls_info> element.  */
+static void
+syscall_start_syscalls_info (struct gdb_xml_parser *parser,
+                             const struct gdb_xml_element *element,
+                             void *user_data,
+                             VEC(gdb_xml_value_s) *attributes)
+{
+  struct syscall_parsing_data *data = user_data;
+  struct syscalls_info *sysinfo = data->sysinfo;
+}
+
+/* Handle the start of a <syscall> element.  */
+static void
+syscall_start_syscall (struct gdb_xml_parser *parser,
+                       const struct gdb_xml_element *element,
+                       void *user_data, VEC(gdb_xml_value_s) *attributes)
+{
+  struct syscall_parsing_data *data = user_data;
+  struct gdb_xml_value *attrs = VEC_address (gdb_xml_value_s, attributes);
+  int len, i;
+  /* syscall info.  */
+  char *name = NULL;
+  int number = 0;
+
+  len = VEC_length (gdb_xml_value_s, attributes);
+
+  for (i = 0; i < len; i++)
+    {
+      if (strcmp (attrs[i].name, "name") == 0)
+        name = attrs[i].value;
+      else if (strcmp (attrs[i].name, "number") == 0)
+        number = * (ULONGEST *) attrs[i].value;
+      else
+        internal_error (__FILE__, __LINE__,
+                        _("Unknown attribute name '%s'."), attrs[i].name);
+    }
+
+  syscall_create_syscall_desc (data->sysinfo, name, number);
+}
+
+
+/* The elements and attributes of an XML syscall document.  */
+static const struct gdb_xml_attribute syscall_attr[] = {
+  { "number", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+  { "name", GDB_XML_AF_NONE, NULL, NULL },
+  { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_element syscalls_info_children[] = {
+  { "syscall", syscall_attr, NULL,
+    GDB_XML_EF_OPTIONAL | GDB_XML_EF_REPEATABLE,
+    syscall_start_syscall, NULL },
+  { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_element syselements[] = {
+  { "syscalls_info", NULL, syscalls_info_children,
+    GDB_XML_EF_NONE, syscall_start_syscalls_info, NULL },
+  { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+static struct syscalls_info *
+syscall_parse_xml (const char *document, xml_fetch_another fetcher,
+                   void *fetcher_baton)
+{
+  struct cleanup *result_cleanup;
+  struct gdb_xml_parser *parser;
+  struct syscall_parsing_data data;
+  char *expanded_text;
+  int i;
+
+  parser = gdb_xml_create_parser_and_cleanup (_("syscalls info"),
+					      syselements, &data);
+
+  memset (&data, 0, sizeof (struct syscall_parsing_data));
+  data.sysinfo = allocate_syscalls_info ();
+  result_cleanup = make_cleanup_free_syscalls_info (data.sysinfo);
+
+  if (gdb_xml_parse (parser, document) == 0)
+    {
+      /* Parsed successfully.  */
+      discard_cleanups (result_cleanup);
+      return data.sysinfo;
+    }
+  else
+    {
+      warning (_("Could not load XML syscalls info; ignoring"));
+      do_cleanups (result_cleanup);
+      return NULL;
+    }
+}
+
+/* Function responsible for initializing the information
+   about the syscalls.  It reads the XML file and fills the
+   struct syscalls_info with the values.
+   
+   Returns the struct syscalls_info if the file is valid, NULL otherwise.  */
+static const struct syscalls_info *
+xml_init_syscalls_info (const char *filename)
+{
+  char *full_file;
+  char *dirname;
+  struct syscalls_info *sysinfo;
+  struct cleanup *back_to;
+
+  full_file = xml_fetch_content_from_file (filename, gdb_datadir);
+  if (full_file == NULL)
+    {
+      warning (_("Could not open \"%s\""), filename);
+      return NULL;
+    }
+
+  back_to = make_cleanup (xfree, full_file);
+
+  dirname = ldirname (filename);
+  if (dirname != NULL)
+    make_cleanup (xfree, dirname);
+
+  sysinfo = syscall_parse_xml (full_file, xml_fetch_content_from_file, dirname);
+  do_cleanups (back_to);
+
+  return sysinfo;
+}
+
+/* Initializes the syscalls_info structure according to the
+   architecture.  */
+static void
+init_sysinfo (void)
+{
+  /* Did we already try to initialize the structure?  */
+  if (have_initialized_sysinfo)
+    return;
+/*  if (xml_syscall_file == NULL)
+    internal_error (__FILE__, __LINE__,
+                    _("This architecture has not set the XML syscall file "
+                      "name.  This is a bug and should not happen; please "
+                      "report it.")); */
+
+  _sysinfo = xml_init_syscalls_info (xml_syscall_file);
+
+  have_initialized_sysinfo = 1;
+
+  if (_sysinfo == NULL)
+    {
+      if (xml_syscall_file)
+        /* The initialization failed.  Let's show a warning
+           message to the user (just this time) and leave.  */
+        warning (_("Could not load the syscall XML file `%s'.\n\
+GDB will not be able to display syscall names."), xml_syscall_file);
+      else
+        /* There's no file to open.  Let's warn the user.  */
+        warning (_("There is no XML file to open.\n\
+GDB will not be able to display syscall names."));
+    }
+}
+
+static int
+xml_get_syscall_number (const struct syscalls_info *sysinfo,
+                        const char *syscall_name)
+{
+  struct syscall_desc *sysdesc;
+  int i;
+
+  if (sysinfo == NULL
+      || syscall_name == NULL)
+    return UNKNOWN_SYSCALL;
+
+  for (i = 0;
+       VEC_iterate(syscall_desc_p, sysinfo->syscalls, i, sysdesc);
+       i++)
+    if (strcmp (sysdesc->name, syscall_name) == 0)
+      return sysdesc->number;
+
+  return UNKNOWN_SYSCALL;
+}
+
+static const char *
+xml_get_syscall_name (const struct syscalls_info *sysinfo,
+                      int syscall_number)
+{
+  struct syscall_desc *sysdesc;
+  int i;
+
+  if (sysinfo == NULL
+      || syscall_number < 0)
+    return NULL;
+
+  for (i = 0;
+       VEC_iterate(syscall_desc_p, sysinfo->syscalls, i, sysdesc);
+       i++)
+    if (sysdesc->number == syscall_number)
+      return sysdesc->name;
+
+  return NULL;
+}
+
+static int
+xml_number_of_syscalls (const struct syscalls_info *sysinfo)
+{
+  return (sysinfo == NULL ? 0 : VEC_length (syscall_desc_p,
+                                            sysinfo->syscalls));
+}
+
+static const char **
+xml_list_of_syscalls (const struct syscalls_info *sysinfo)
+{
+  struct syscall_desc *sysdesc;
+  const char **names = NULL;
+  int nsyscalls;
+  int i;
+
+  if (sysinfo == NULL)
+    return NULL;
+
+  nsyscalls = VEC_length (syscall_desc_p, sysinfo->syscalls);
+  names = xmalloc ((nsyscalls + 1) * sizeof (char *));
+
+  for (i = 0;
+       VEC_iterate (syscall_desc_p, sysinfo->syscalls, i, sysdesc);
+       i++)
+    names[i] = sysdesc->name;
+
+  names[i] = NULL;
+
+  return names;
+}
+
+void
+set_xml_syscall_file_name (const char *name)
+{
+  xml_syscall_file = name;
+}
+
+void
+get_syscall_by_number (int syscall_number,
+                       struct syscall *s)
+{
+  init_sysinfo ();
+
+  s->number = syscall_number;
+  s->name = xml_get_syscall_name (_sysinfo, syscall_number);
+}
+
+void
+get_syscall_by_name (const char *syscall_name,
+                     struct syscall *s)
+{
+  init_sysinfo ();
+
+  s->number = xml_get_syscall_number (_sysinfo, syscall_name);
+  s->name = syscall_name;
+}
+
+const char **
+get_syscall_names (void)
+{
+  init_sysinfo ();
+
+  return xml_list_of_syscalls (_sysinfo);
+}
+
+#endif /* ! HAVE_LIBEXPAT */