/* Functions that provide the mechanism to parse a syscall XML file
and get its values.
- Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2009-2016 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbtypes.h"
#include "xml-support.h"
#include "xml-syscall.h"
+#include "gdbarch.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
}
void
-set_xml_syscall_file_name (const char *name)
+set_xml_syscall_file_name (struct gdbarch *gdbarch, const char *name)
{
return;
}
void
-get_syscall_by_number (int syscall_number,
- struct syscall *s)
+get_syscall_by_number (struct gdbarch *gdbarch,
+ int syscall_number, struct syscall *s)
{
syscall_warn_user ();
s->number = syscall_number;
}
void
-get_syscall_by_name (const char *syscall_name,
- struct syscall *s)
+get_syscall_by_name (struct gdbarch *gdbarch, const char *syscall_name,
+ struct syscall *s)
{
syscall_warn_user ();
s->number = UNKNOWN_SYSCALL;
}
const char **
-get_syscall_names (void)
+get_syscall_names (struct gdbarch *gdbarch)
{
syscall_warn_user ();
return NULL;
}
-#else /* ! HAVE_LIBEXPAT */
+struct syscall *
+get_syscalls_by_group (struct gdbarch *gdbarch, const char *group)
+{
+ syscall_warn_user ();
+ return NULL;
+}
-/* Variable that will hold the last known data-directory. This is useful to
- know whether we should re-read the XML info for the target. */
-static char *my_gdb_datadir = NULL;
+const char **
+get_syscall_group_names (struct gdbarch *gdbarch)
+{
+ syscall_warn_user ();
+ return NULL;
+}
+
+#else /* ! HAVE_LIBEXPAT */
/* Structure which describes a syscall. */
typedef struct syscall_desc
} *syscall_desc_p;
DEF_VEC_P(syscall_desc_p);
+/* Structure of a syscall group. */
+typedef struct syscall_group_desc
+{
+ /* The group name. */
+
+ char *name;
+
+ /* The syscalls that are part of the group. */
+
+ VEC(syscall_desc_p) *syscalls;
+} *syscall_group_desc_p;
+DEF_VEC_P(syscall_group_desc_p);
+
/* Structure that represents syscalls information. */
struct syscalls_info
{
/* The syscalls. */
VEC(syscall_desc_p) *syscalls;
+
+ /* The syscall groups. */
+
+ VEC(syscall_group_desc_p) *groups;
+
+ /* Variable that will hold the last known data-directory. This is
+ useful to know whether we should re-read the XML info for the
+ target. */
+
+ char *my_gdb_datadir;
};
/* Callback data for syscall information parsing. */
{
/* The syscalls_info we are building. */
- struct syscalls_info *sysinfo;
+ struct syscalls_info *syscalls_info;
};
-/* 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);
+ return XCNEW (struct syscalls_info);
+}
+
+static void
+syscalls_info_free_syscalls_desc (struct syscall_desc *sd)
+{
+ xfree (sd->name);
}
+/* Free syscall_group_desc members but not the structure itself. */
+
static void
-sysinfo_free_syscalls_desc (struct syscall_desc *sd)
+syscalls_info_free_syscall_group_desc (struct syscall_group_desc *sd)
{
+ VEC_free (syscall_desc_p, sd->syscalls);
xfree (sd->name);
}
static void
free_syscalls_info (void *arg)
{
- struct syscalls_info *sysinfo = arg;
+ struct syscalls_info *syscalls_info = (struct syscalls_info *) arg;
struct syscall_desc *sysdesc;
+ struct syscall_group_desc *groupdesc;
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 (syscalls_info->my_gdb_datadir);
- xfree (sysinfo);
+ if (syscalls_info->syscalls != NULL)
+ {
+ for (i = 0;
+ VEC_iterate (syscall_desc_p, syscalls_info->syscalls, i, sysdesc);
+ i++)
+ syscalls_info_free_syscalls_desc (sysdesc);
+ VEC_free (syscall_desc_p, syscalls_info->syscalls);
+ }
+
+ if (syscalls_info->groups != NULL)
+ {
+ for (i = 0;
+ VEC_iterate (syscall_group_desc_p,
+ syscalls_info->groups, i, groupdesc);
+ i++)
+ syscalls_info_free_syscall_group_desc (groupdesc);
+
+ VEC_free (syscall_group_desc_p, syscalls_info->groups);
+ }
+
+ xfree (syscalls_info);
}
-struct cleanup *
-make_cleanup_free_syscalls_info (struct syscalls_info *sysinfo)
+static struct cleanup *
+make_cleanup_free_syscalls_info (struct syscalls_info *syscalls_info)
{
- return make_cleanup (free_syscalls_info, sysinfo);
+ return make_cleanup (free_syscalls_info, syscalls_info);
}
+/* Create a new syscall group. Return pointer to the
+ syscall_group_desc structure that represents the new group. */
+
+static struct syscall_group_desc *
+syscall_group_create_syscall_group_desc (struct syscalls_info *syscalls_info,
+ const char *group)
+{
+ struct syscall_group_desc *groupdesc = XCNEW (struct syscall_group_desc);
+
+ groupdesc->name = xstrdup (group);
+
+ VEC_safe_push (syscall_group_desc_p, syscalls_info->groups, groupdesc);
+
+ return groupdesc;
+}
+
+/* Add a syscall to the group. If group doesn't exist, create it. */
+
static void
-syscall_create_syscall_desc (struct syscalls_info *sysinfo,
- const char *name, int number)
+syscall_group_add_syscall (struct syscalls_info *syscalls_info,
+ struct syscall_desc *syscall,
+ const char *group)
{
- struct syscall_desc *sysdesc = XZALLOC (struct syscall_desc);
+ struct syscall_group_desc *groupdesc = NULL;
+ int i;
+
+ /* Search for an existing group. */
+ for (i = 0;
+ VEC_iterate (syscall_group_desc_p, syscalls_info->groups, i, groupdesc);
+ i++)
+ {
+ if (strcmp (groupdesc->name, group) == 0)
+ break;
+ }
+
+ if (groupdesc == NULL)
+ {
+ /* No group was found with this name. We must create a new
+ one. */
+ groupdesc = syscall_group_create_syscall_group_desc (syscalls_info,
+ group);
+ }
+
+ VEC_safe_push (syscall_desc_p, groupdesc->syscalls, syscall);
+}
+
+static void
+syscall_create_syscall_desc (struct syscalls_info *syscalls_info,
+ const char *name, int number,
+ char *groups)
+{
+ struct syscall_desc *sysdesc = XCNEW (struct syscall_desc);
+ char *group;
sysdesc->name = xstrdup (name);
sysdesc->number = number;
- VEC_safe_push (syscall_desc_p, sysinfo->syscalls, sysdesc);
+ VEC_safe_push (syscall_desc_p, syscalls_info->syscalls, sysdesc);
+
+ /* Add syscall to its groups. */
+ if (groups != NULL)
+ {
+ for (group = strtok (groups, ",");
+ group != NULL;
+ group = strtok (NULL, ","))
+ syscall_group_add_syscall (syscalls_info, sysdesc, group);
+ }
}
/* Handle the start of a <syscall> element. */
const struct gdb_xml_element *element,
void *user_data, VEC(gdb_xml_value_s) *attributes)
{
- struct syscall_parsing_data *data = user_data;
+ struct syscall_parsing_data *data = (struct syscall_parsing_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;
+ char *groups = NULL;
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;
+ name = (char *) attrs[i].value;
else if (strcmp (attrs[i].name, "number") == 0)
number = * (ULONGEST *) attrs[i].value;
+ else if (strcmp (attrs[i].name, "groups") == 0)
+ groups = (char *) attrs[i].value;
else
internal_error (__FILE__, __LINE__,
_("Unknown attribute name '%s'."), attrs[i].name);
}
gdb_assert (name);
- syscall_create_syscall_desc (data->sysinfo, name, number);
+ syscall_create_syscall_desc (data->syscalls_info, name, number, groups);
}
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 },
+ { "groups", GDB_XML_AF_OPTIONAL, NULL, NULL },
{ NULL, GDB_XML_AF_NONE, NULL, NULL }
};
struct cleanup *result_cleanup;
struct syscall_parsing_data data;
- data.sysinfo = allocate_syscalls_info ();
- result_cleanup = make_cleanup_free_syscalls_info (data.sysinfo);
+ data.syscalls_info = allocate_syscalls_info ();
+ result_cleanup = make_cleanup_free_syscalls_info (data.syscalls_info);
if (gdb_xml_parse_quick (_("syscalls info"), NULL,
syselements, document, &data) == 0)
{
/* Parsed successfully. */
discard_cleanups (result_cleanup);
- return data.sysinfo;
+ return data.syscalls_info;
}
else
{
struct syscalls_info with the values.
Returns the struct syscalls_info if the file is valid, NULL otherwise. */
-static const struct syscalls_info *
+static struct syscalls_info *
xml_init_syscalls_info (const char *filename)
{
char *full_file;
char *dirname;
- struct syscalls_info *sysinfo;
+ struct syscalls_info *syscalls_info;
struct cleanup *back_to;
full_file = xml_fetch_content_from_file (filename, gdb_datadir);
if (dirname != NULL)
make_cleanup (xfree, dirname);
- sysinfo = syscall_parse_xml (full_file,
- xml_fetch_content_from_file, dirname);
+ syscalls_info = syscall_parse_xml (full_file,
+ xml_fetch_content_from_file, dirname);
do_cleanups (back_to);
- return sysinfo;
+ return syscalls_info;
}
/* Initializes the syscalls_info structure according to the
architecture. */
static void
-init_sysinfo (void)
+init_syscalls_info (struct gdbarch *gdbarch)
{
+ struct syscalls_info *syscalls_info = gdbarch_syscalls_info (gdbarch);
+ const char *xml_syscall_file = gdbarch_xml_syscall_file (gdbarch);
+
/* Should we re-read the XML info for this target? */
- if (my_gdb_datadir && filename_cmp (my_gdb_datadir, gdb_datadir) != 0)
+ if (syscalls_info != NULL && syscalls_info->my_gdb_datadir != NULL
+ && filename_cmp (syscalls_info->my_gdb_datadir, gdb_datadir) != 0)
{
/* The data-directory changed from the last time we used it.
It means that we have to re-read the XML info. */
- have_initialized_sysinfo = 0;
- xfree (my_gdb_datadir);
- my_gdb_datadir = NULL;
- if (sysinfo)
- free_syscalls_info ((void *) sysinfo);
+ free_syscalls_info (syscalls_info);
+ syscalls_info = NULL;
+ set_gdbarch_syscalls_info (gdbarch, NULL);
}
- /* Did we already try to initialize the structure? */
- if (have_initialized_sysinfo)
+ /* Did we succeed at initializing this? */
+ if (syscalls_info != NULL)
return;
- sysinfo = xml_init_syscalls_info (xml_syscall_file);
+ syscalls_info = xml_init_syscalls_info (xml_syscall_file);
- have_initialized_sysinfo = 1;
+ /* If there was some error reading the XML file, we initialize
+ gdbarch->syscalls_info anyway, in order to store information
+ about our attempt. */
+ if (syscalls_info == NULL)
+ syscalls_info = allocate_syscalls_info ();
- if (sysinfo == NULL)
+ if (syscalls_info->syscalls == NULL)
{
- if (xml_syscall_file)
+ if (xml_syscall_file != NULL)
warning (_("Could not load the syscall XML file `%s/%s'."),
gdb_datadir, xml_syscall_file);
else
}
/* Saving the data-directory used to read this XML info. */
- my_gdb_datadir = xstrdup (gdb_datadir);
+ syscalls_info->my_gdb_datadir = xstrdup (gdb_datadir);
+
+ set_gdbarch_syscalls_info (gdbarch, syscalls_info);
+}
+
+/* Search for a syscall group by its name. Return syscall_group_desc
+ structure for the group if found or NULL otherwise. */
+
+static struct syscall_group_desc *
+syscall_group_get_group_by_name (const struct syscalls_info *syscalls_info,
+ const char *group)
+{
+ struct syscall_group_desc *groupdesc;
+ int i;
+
+ if (syscalls_info == NULL)
+ return NULL;
+
+ if (group == NULL)
+ return NULL;
+
+ /* Search for existing group. */
+ for (i = 0;
+ VEC_iterate (syscall_group_desc_p, syscalls_info->groups, i, groupdesc);
+ i++)
+ {
+ if (strcmp (groupdesc->name, group) == 0)
+ return groupdesc;
+ }
+
+ return NULL;
}
static int
-xml_get_syscall_number (const struct syscalls_info *sysinfo,
+xml_get_syscall_number (struct gdbarch *gdbarch,
const char *syscall_name)
{
+ struct syscalls_info *syscalls_info = gdbarch_syscalls_info (gdbarch);
struct syscall_desc *sysdesc;
int i;
- if (sysinfo == NULL
+ if (syscalls_info == NULL
|| syscall_name == NULL)
return UNKNOWN_SYSCALL;
for (i = 0;
- VEC_iterate(syscall_desc_p, sysinfo->syscalls, i, sysdesc);
+ VEC_iterate(syscall_desc_p, syscalls_info->syscalls, i, sysdesc);
i++)
if (strcmp (sysdesc->name, syscall_name) == 0)
return sysdesc->number;
}
static const char *
-xml_get_syscall_name (const struct syscalls_info *sysinfo,
+xml_get_syscall_name (struct gdbarch *gdbarch,
int syscall_number)
{
+ struct syscalls_info *syscalls_info = gdbarch_syscalls_info (gdbarch);
struct syscall_desc *sysdesc;
int i;
- if (sysinfo == NULL
+ if (syscalls_info == NULL
|| syscall_number < 0)
return NULL;
for (i = 0;
- VEC_iterate(syscall_desc_p, sysinfo->syscalls, i, sysdesc);
+ VEC_iterate(syscall_desc_p, syscalls_info->syscalls, i, sysdesc);
i++)
if (sysdesc->number == syscall_number)
return sysdesc->name;
}
static const char **
-xml_list_of_syscalls (const struct syscalls_info *sysinfo)
+xml_list_of_syscalls (struct gdbarch *gdbarch)
{
+ struct syscalls_info *syscalls_info = gdbarch_syscalls_info (gdbarch);
struct syscall_desc *sysdesc;
const char **names = NULL;
int nsyscalls;
int i;
- if (sysinfo == NULL)
+ if (syscalls_info == NULL)
return NULL;
- nsyscalls = VEC_length (syscall_desc_p, sysinfo->syscalls);
- names = xmalloc ((nsyscalls + 1) * sizeof (char *));
+ nsyscalls = VEC_length (syscall_desc_p, syscalls_info->syscalls);
+ names = XNEWVEC (const char *, nsyscalls + 1);
for (i = 0;
- VEC_iterate (syscall_desc_p, sysinfo->syscalls, i, sysdesc);
+ VEC_iterate (syscall_desc_p, syscalls_info->syscalls, i, sysdesc);
i++)
names[i] = sysdesc->name;
return names;
}
+/* Iterate over the syscall_group_desc element to return a list of
+ syscalls that are part of the given group, terminated by an empty
+ element. If the syscall group doesn't exist, return NULL. */
+
+static struct syscall *
+xml_list_syscalls_by_group (struct gdbarch *gdbarch, const char *group)
+{
+ struct syscalls_info *syscalls_info = gdbarch_syscalls_info (gdbarch);
+ struct syscall_group_desc *groupdesc;
+ struct syscall_desc *sysdesc;
+ struct syscall *syscalls = NULL;
+ int nsyscalls;
+ int i;
+
+ if (syscalls_info == NULL)
+ return NULL;
+
+ groupdesc = syscall_group_get_group_by_name (syscalls_info, group);
+ if (groupdesc == NULL)
+ return NULL;
+
+ nsyscalls = VEC_length (syscall_desc_p, groupdesc->syscalls);
+ syscalls = (struct syscall*) xmalloc ((nsyscalls + 1)
+ * sizeof (struct syscall));
+
+ for (i = 0;
+ VEC_iterate (syscall_desc_p, groupdesc->syscalls, i, sysdesc);
+ i++)
+ {
+ syscalls[i].name = sysdesc->name;
+ syscalls[i].number = sysdesc->number;
+ }
+
+ /* Add final element marker. */
+ syscalls[i].name = NULL;
+ syscalls[i].number = 0;
+
+ return syscalls;
+}
+
+/* Return a NULL terminated list of syscall groups or an empty list, if
+ no syscall group is available. Return NULL, if there is no syscall
+ information available. */
+
+static const char **
+xml_list_of_groups (struct gdbarch *gdbarch)
+{
+ struct syscalls_info *syscalls_info = gdbarch_syscalls_info (gdbarch);
+ struct syscall_group_desc *groupdesc;
+ const char **names = NULL;
+ int i;
+ int ngroups;
+
+ if (syscalls_info == NULL)
+ return NULL;
+
+ ngroups = VEC_length (syscall_group_desc_p, syscalls_info->groups);
+ names = (const char**) xmalloc ((ngroups + 1) * sizeof (char *));
+
+ for (i = 0;
+ VEC_iterate (syscall_group_desc_p, syscalls_info->groups, i, groupdesc);
+ i++)
+ names[i] = groupdesc->name;
+
+ names[i] = NULL;
+
+ return names;
+}
+
void
-set_xml_syscall_file_name (const char *name)
+set_xml_syscall_file_name (struct gdbarch *gdbarch, const char *name)
{
- xml_syscall_file = name;
+ set_gdbarch_xml_syscall_file (gdbarch, name);
}
void
-get_syscall_by_number (int syscall_number,
- struct syscall *s)
+get_syscall_by_number (struct gdbarch *gdbarch,
+ int syscall_number, struct syscall *s)
{
- init_sysinfo ();
+ init_syscalls_info (gdbarch);
s->number = syscall_number;
- s->name = xml_get_syscall_name (sysinfo, syscall_number);
+ s->name = xml_get_syscall_name (gdbarch, syscall_number);
}
void
-get_syscall_by_name (const char *syscall_name,
- struct syscall *s)
+get_syscall_by_name (struct gdbarch *gdbarch,
+ const char *syscall_name, struct syscall *s)
{
- init_sysinfo ();
+ init_syscalls_info (gdbarch);
- s->number = xml_get_syscall_number (sysinfo, syscall_name);
+ s->number = xml_get_syscall_number (gdbarch, syscall_name);
s->name = syscall_name;
}
const char **
-get_syscall_names (void)
+get_syscall_names (struct gdbarch *gdbarch)
+{
+ init_syscalls_info (gdbarch);
+
+ return xml_list_of_syscalls (gdbarch);
+}
+
+/* See comment in xml-syscall.h. */
+
+struct syscall *
+get_syscalls_by_group (struct gdbarch *gdbarch, const char *group)
+{
+ init_syscalls_info (gdbarch);
+
+ return xml_list_syscalls_by_group (gdbarch, group);
+}
+
+/* See comment in xml-syscall.h. */
+
+const char **
+get_syscall_group_names (struct gdbarch *gdbarch)
{
- init_sysinfo ();
+ init_syscalls_info (gdbarch);
- return xml_list_of_syscalls (sysinfo);
+ return xml_list_of_groups (gdbarch);
}
#endif /* ! HAVE_LIBEXPAT */
projects / deliverable / binutils-gdb.git / blobdiff