2012-11-09 Pedro Alves <palves@redhat.com>
* gdbarch.sh (target_gdbarch) <gdbarch.h>: Reimplement as macro.
(get_target_gdbarch) <gdbarch.h>: New function.
(startup_gdbarch) <gdbarch.h>: Declare.
<gdbarch.c> (target_gdbarch): Delete.
<gdbarch.c> (deprecated_target_gdbarch_select_hack): Set the
current inferior's gdbarch.
<gdbarch.c> (get_target_gdbarch): New function.
* inferior.c: Include target-descriptions.h.
(free_inferior): Free target description info.
(add_inferior_with_spaces): Set the inferior's initial
architecture.
(clone_inferior_command): Copy the original inferior's target
description if it was user specified.
(initialize_inferiors): Add comment.
* inferior.h (struct target_desc_info): Forward declare.
(struct inferior) <gdbarch>: New field.
* linux-nat.c: Include target-descriptions.h.
(linux_child_follow_fork): Copy the parent's architecture and
target description to the child.
* target-descriptions.c: Include inferior.h.
(struct target_desc_info): New structure, holding the equivalents
of ...
(target_desc_fetched, current_target_desc)
(target_description_filename): ... these removed globals.
(get_tdesc_info, target_desc_info_from_user_p)
(copy_inferior_target_desc_info, target_desc_info_free): New.
(target_desc_fetched, current_target_desc)
(target_description_filename): Reimplemented as convenience
macros.
(tdesc_filename_cmd_string): New global.
(set_tdesc_filename_cmd): Copy the string manipulated by the "set
tdescs filename ..." commands to the per-inferior equivalent.
(show_tdesc_filename_cmd): Get the value to show from the
per-inferior description filename.
(_initilize_target_descriptions): Change the "set/show tdesc
filename" commands' variable.
* target-descriptions.h (struct target_desc, struct target_desc_info)
(struct inferior): Forward declare.
(target_find_description, target_clear_description)
(target_current_description): Adjust comments.
(copy_inferior_target_desc_info, target_desc_info_free)
(target_desc_info_from_user_p). Declare.
gdb/testsuite/
2012-11-09 Pedro Alves <palves@redhat.com>
* gdb.multi/multi-arch.exp: New.
+2012-11-09 Pedro Alves <palves@redhat.com>
+
+ * gdbarch.sh (target_gdbarch) <gdbarch.h>: Reimplement as macro.
+ (get_target_gdbarch) <gdbarch.h>: New function.
+ (startup_gdbarch) <gdbarch.h>: Declare.
+ <gdbarch.c> (target_gdbarch): Delete.
+ <gdbarch.c> (deprecated_target_gdbarch_select_hack): Set the
+ current inferior's gdbarch.
+ <gdbarch.c> (get_target_gdbarch): New function.
+ * inferior.c: Include target-descriptions.h.
+ (free_inferior): Free target description info.
+ (add_inferior_with_spaces): Set the inferior's initial
+ architecture.
+ (clone_inferior_command): Copy the original inferior's target
+ description if it was user specified.
+ (initialize_inferiors): Add comment.
+ * inferior.h (struct target_desc_info): Forward declare.
+ (struct inferior) <gdbarch>: New field.
+ * linux-nat.c: Include target-descriptions.h.
+ (linux_child_follow_fork): Copy the parent's architecture and
+ target description to the child.
+ * target-descriptions.c: Include inferior.h.
+ (struct target_desc_info): New structure, holding the equivalents
+ of ...
+ (target_desc_fetched, current_target_desc)
+ (target_description_filename): ... these removed globals.
+ (get_tdesc_info, target_desc_info_from_user_p)
+ (copy_inferior_target_desc_info, target_desc_info_free): New.
+ (target_desc_fetched, current_target_desc)
+ (target_description_filename): Reimplemented as convenience
+ macros.
+ (tdesc_filename_cmd_string): New global.
+ (set_tdesc_filename_cmd): Copy the string manipulated by the "set
+ tdescs filename ..." commands to the per-inferior equivalent.
+ (show_tdesc_filename_cmd): Get the value to show from the
+ per-inferior description filename.
+ (_initilize_target_descriptions): Change the "set/show tdesc
+ filename" commands' variable.
+ * target-descriptions.h (struct target_desc, struct target_desc_info)
+ (struct inferior): Forward declare.
+ (target_find_description, target_clear_description)
+ (target_current_description): Adjust comments.
+ (copy_inferior_target_desc_info, target_desc_info_free)
+ (target_desc_info_from_user_p). Declare.
+
2012-11-08 Stephane Carrez <Stephane.Carrez@gmail.com>
* tui/tui-hooks.c (tui_about_to_proceed): New function.
/* startup_gdbarch() */
};
-struct gdbarch *target_gdbarch = &startup_gdbarch;
/* Create a new ``struct gdbarch'' based on information provided by
``struct gdbarch_info''. */
{
gdb_assert (new_gdbarch != NULL);
gdb_assert (new_gdbarch->initialized_p);
- target_gdbarch = new_gdbarch;
+ current_inferior ()->gdbarch = new_gdbarch;
observer_notify_architecture_changed (new_gdbarch);
registers_changed ();
}
+/* Helper for 'target_gdbarch'. */
+
+struct gdbarch *
+get_target_gdbarch (void)
+{
+ return current_inferior ()->gdbarch;
+}
+
extern void _initialize_gdbarch (void);
void
struct axs_value;
struct stap_parse_info;
-/* The architecture associated with the connection to the target.
-
- The architecture vector provides some information that is really
- a property of the target: The layout of certain packets, for instance;
- or the solib_ops vector. Etc. To differentiate architecture accesses
- to per-target properties from per-thread/per-frame/per-objfile properties,
- accesses to per-target properties should be made through target_gdbarch.
-
- Eventually, when support for multiple targets is implemented in
- GDB, this global should be made target-specific. */
-extern struct gdbarch *target_gdbarch;
+/* The architecture associated with the inferior through the
+ connection to the target.
+
+ The architecture vector provides some information that is really a
+ property of the inferior, accessed through a particular target:
+ ptrace operations; the layout of certain RSP packets; the solib_ops
+ vector; etc. To differentiate architecture accesses to
+ per-inferior/target properties from
+ per-thread/per-frame/per-objfile properties, accesses to
+ per-inferior/target properties should be made through this
+ gdbarch. */
+
+/* This is a convenience wrapper for 'current_inferior ()->gdbarch'. */
+#define target_gdbarch get_target_gdbarch ()
+extern struct gdbarch *get_target_gdbarch (void);
+
+/* The initial, default architecture. It uses host values (for want of a better
+ choice). */
+extern struct gdbarch startup_gdbarch;
+
/* Callback type for the 'iterate_over_objfiles_in_search_order'
gdbarch method. */
struct axs_value;
struct stap_parse_info;
-/* The architecture associated with the connection to the target.
-
- The architecture vector provides some information that is really
- a property of the target: The layout of certain packets, for instance;
- or the solib_ops vector. Etc. To differentiate architecture accesses
- to per-target properties from per-thread/per-frame/per-objfile properties,
- accesses to per-target properties should be made through target_gdbarch.
-
- Eventually, when support for multiple targets is implemented in
- GDB, this global should be made target-specific. */
-extern struct gdbarch *target_gdbarch;
+/* The architecture associated with the inferior through the
+ connection to the target.
+
+ The architecture vector provides some information that is really a
+ property of the inferior, accessed through a particular target:
+ ptrace operations; the layout of certain RSP packets; the solib_ops
+ vector; etc. To differentiate architecture accesses to
+ per-inferior/target properties from
+ per-thread/per-frame/per-objfile properties, accesses to
+ per-inferior/target properties should be made through this
+ gdbarch. */
+
+/* This is a convenience wrapper for 'current_inferior ()->gdbarch'. */
+#define target_gdbarch get_target_gdbarch ()
+extern struct gdbarch *get_target_gdbarch (void);
+
+/* The initial, default architecture. It uses host values (for want of a better
+ choice). */
+extern struct gdbarch startup_gdbarch;
+
/* Callback type for the 'iterate_over_objfiles_in_search_order'
gdbarch method. */
/* startup_gdbarch() */
};
-struct gdbarch *target_gdbarch = &startup_gdbarch;
EOF
# Create a new gdbarch struct
{
gdb_assert (new_gdbarch != NULL);
gdb_assert (new_gdbarch->initialized_p);
- target_gdbarch = new_gdbarch;
+ current_inferior ()->gdbarch = new_gdbarch;
observer_notify_architecture_changed (new_gdbarch);
registers_changed ();
}
+/* Helper for 'target_gdbarch'. */
+
+struct gdbarch *
+get_target_gdbarch (void)
+{
+ return current_inferior ()->gdbarch;
+}
+
extern void _initialize_gdbarch (void);
void
#include "environ.h"
#include "cli/cli-utils.h"
#include "continuations.h"
+#include "arch-utils.h"
+#include "target-descriptions.h"
void _initialize_inferiors (void);
xfree (inf->args);
xfree (inf->terminal);
free_environ (inf->environment);
+ target_desc_info_free (inf->tdesc_info);
xfree (inf->private);
xfree (inf);
}
struct address_space *aspace;
struct program_space *pspace;
struct inferior *inf;
+ struct gdbarch_info info;
/* If all inferiors share an address space on this system, this
doesn't really return a new address space; otherwise, it
inf->pspace = pspace;
inf->aspace = pspace->aspace;
+ /* Setup the inferior's initial arch, based on information obtained
+ from the global "set ..." options. */
+ gdbarch_info_init (&info);
+ inf->gdbarch = gdbarch_find_by_info (info);
+ /* The "set ..." options reject invalid settings, so we should
+ always have a valid arch by now. */
+ gdb_assert (inf->gdbarch != NULL);
+
return inf;
}
inf = add_inferior (0);
inf->pspace = pspace;
inf->aspace = pspace->aspace;
+ inf->gdbarch = orginf->gdbarch;
+
+ /* If the original inferior had a user specified target
+ description, make the clone use it too. */
+ if (target_desc_info_from_user_p (inf->tdesc_info))
+ copy_inferior_target_desc_info (inf, orginf);
printf_filtered (_("Added inferior %d.\n"), inf->num);
current_inferior_ = add_inferior (0);
current_inferior_->pspace = current_program_space;
current_inferior_->aspace = current_program_space->aspace;
+ /* The architecture will be initialized shortly, by
+ initialize_current_architecture. */
add_info ("inferiors", info_inferiors_command,
_("IDs of specified inferiors (all inferiors if no argument)."));
struct regcache;
struct ui_out;
struct terminal_info;
+struct target_desc_info;
#include "ptid.h"
from enum symfile_add_flags. */
int symfile_flags;
+ /* Info about an inferior's target description (if it's fetched; the
+ user supplied description's filename, if any; etc.). */
+ struct target_desc_info *tdesc_info;
+
+ /* The architecture associated with the inferior through the
+ connection to the target.
+
+ The architecture vector provides some information that is really
+ a property of the inferior, accessed through a particular target:
+ ptrace operations; the layout of certain RSP packets; the
+ solib_ops vector; etc. To differentiate architecture accesses to
+ per-inferior/target properties from
+ per-thread/per-frame/per-objfile properties, accesses to
+ per-inferior/target properties should be made through
+ this gdbarch. */
+ struct gdbarch *gdbarch;
+
/* Per inferior data-pointers required by other GDB modules. */
REGISTRY_FIELDS;
};
#include "exceptions.h"
#include "linux-ptrace.h"
#include "buffer.h"
+#include "target-descriptions.h"
#ifndef SPUFS_MAGIC
#define SPUFS_MAGIC 0x23c9b64e
parent_inf = current_inferior ();
child_inf->attach_flag = parent_inf->attach_flag;
copy_terminal_info (child_inf, parent_inf);
+ child_inf->gdbarch = parent_inf->gdbarch;
+ copy_inferior_target_desc_info (child_inf, parent_inf);
old_chain = save_inferior_ptid ();
save_current_program_space ();
parent_inf = current_inferior ();
child_inf->attach_flag = parent_inf->attach_flag;
copy_terminal_info (child_inf, parent_inf);
+ child_inf->gdbarch = parent_inf->gdbarch;
+ copy_inferior_target_desc_info (child_inf, parent_inf);
parent_pspace = parent_inf->pspace;
#include "gdb_assert.h"
#include "gdb_obstack.h"
#include "hashtab.h"
+#include "inferior.h"
/* Types. */
gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p;
};
-/* Global state. These variables are associated with the current
- target; if GDB adds support for multiple simultaneous targets, then
- these variables should become target-specific data. */
+/* Info about an inferior's target description. There's one of these
+ for each inferior. */
-/* A flag indicating that a description has already been fetched from
- the current target, so it should not be queried again. */
+struct target_desc_info
+{
+ /* A flag indicating that a description has already been fetched
+ from the target, so it should not be queried again. */
+
+ int fetched;
-static int target_desc_fetched;
+ /* The description fetched from the target, or NULL if the target
+ did not supply any description. Only valid when
+ target_desc_fetched is set. Only the description initialization
+ code should access this; normally, the description should be
+ accessed through the gdbarch object. */
-/* The description fetched from the current target, or NULL if the
- current target did not supply any description. Only valid when
- target_desc_fetched is set. Only the description initialization
- code should access this; normally, the description should be
- accessed through the gdbarch object. */
+ const struct target_desc *tdesc;
-static const struct target_desc *current_target_desc;
+ /* The filename to read a target description from, as set by "set
+ tdesc filename ..." */
-/* Other global variables. */
+ char *filename;
+};
-/* The filename to read a target description from. */
+/* Get the inferior INF's target description info, allocating one on
+ the stop if necessary. */
-static char *target_description_filename;
+static struct target_desc_info *
+get_tdesc_info (struct inferior *inf)
+{
+ if (inf->tdesc_info == NULL)
+ inf->tdesc_info = XCNEW (struct target_desc_info);
+ return inf->tdesc_info;
+}
/* A handle for architecture-specific data associated with the
target description (see struct tdesc_arch_data). */
static struct gdbarch_data *tdesc_data;
+/* See target-descriptions.h. */
+
+int
+target_desc_info_from_user_p (struct target_desc_info *info)
+{
+ return info != NULL && info->filename != NULL;
+}
+
+/* See target-descriptions.h. */
+
+void
+copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf)
+{
+ struct target_desc_info *src = get_tdesc_info (srcinf);
+ struct target_desc_info *dest = get_tdesc_info (destinf);
+
+ dest->fetched = src->fetched;
+ dest->tdesc = src->tdesc;
+ dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL;
+}
+
+/* See target-descriptions.h. */
+
+void
+target_desc_info_free (struct target_desc_info *tdesc_info)
+{
+ if (tdesc_info != NULL)
+ {
+ xfree (tdesc_info->filename);
+ xfree (tdesc_info);
+ }
+}
+
+/* Convenience helper macros. */
+
+#define target_desc_fetched \
+ get_tdesc_info (current_inferior ())->fetched
+#define current_target_desc \
+ get_tdesc_info (current_inferior ())->tdesc
+#define target_description_filename \
+ get_tdesc_info (current_inferior ())->filename
+
+/* The string manipulated by the "set tdesc filename ..." command. */
+
+static char *tdesc_filename_cmd_string;
+
/* Fetch the current target's description, and switch the current
architecture to one which incorporates that description. */
set_tdesc_filename_cmd (char *args, int from_tty,
struct cmd_list_element *c)
{
+ xfree (target_description_filename);
+ target_description_filename = xstrdup (tdesc_filename_cmd_string);
+
target_clear_description ();
target_find_description ();
}
struct cmd_list_element *c,
const char *value)
{
+ value = target_description_filename;
+
if (value != NULL && *value != '\0')
printf_filtered (_("The target description will be read from \"%s\".\n"),
value);
0 /* allow-unknown */, &unsetlist);
add_setshow_filename_cmd ("filename", class_obscure,
- &target_description_filename,
+ &tdesc_filename_cmd_string,
_("\
Set the file to read for an XML target description"), _("\
Show the file to read for an XML target description"), _("\
struct tdesc_reg;
struct target_desc;
struct target_ops;
+struct target_desc;
+/* An inferior's target description info is stored in this opaque
+ object. There's one such object per inferior. */
+struct target_desc_info;
+struct inferior;
-/* Fetch the current target's description, and switch the current
+/* Fetch the current inferior's description, and switch its current
architecture to one which incorporates that description. */
void target_find_description (void);
-/* Discard any description fetched from the current target, and switch
- the current architecture to one with no target description. */
+/* Discard any description fetched from the target for the current
+ inferior, and switch the current architecture to one with no target
+ description. */
void target_clear_description (void);
-/* Return the global current target description. This should only be
- used by gdbarch initialization code; most access should be through
- an existing gdbarch. */
+/* Return the current inferior's target description. This should only
+ be used by gdbarch initialization code; most access should be
+ through an existing gdbarch. */
const struct target_desc *target_current_description (void);
+/* Copy inferior target description data. Used for example when
+ handling (v)forks, where child's description is the same as the
+ parent's, since the child really is a copy of the parent. */
+
+void copy_inferior_target_desc_info (struct inferior *destinf,
+ struct inferior *srcinf);
+
+/* Free a target_desc_info object. */
+
+void target_desc_info_free (struct target_desc_info *tdesc_info);
+
+/* Returns true if INFO indicates the target description had been
+ supplied by the user. */
+
+int target_desc_info_from_user_p (struct target_desc_info *info);
+
/* Record architecture-specific functions to call for pseudo-register
support. If tdesc_use_registers is called and gdbarch_num_pseudo_regs
is greater than zero, then these should be called as well.
+2012-11-09 Pedro Alves <palves@redhat.com>
+
+ * gdb.multi/multi-arch.exp: New.
+
2012-11-08 Tom Tromey <tromey@redhat.com>
* gdb.base/siginfo-obj.exp: Create core file. Test siginfo from
--- /dev/null
+# Copyright 2009-2012 Free Software Foundation, Inc.
+
+# 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/>.
+
+# Test multi-exec / multi-process features that work for all configurations,
+# even ones that cannot run multiple processes simultaneously.
+
+set testfile "multi-arch"
+
+# The plain remote target can't do multiple inferiors.
+if [target_info exists use_gdb_stub] {
+ return
+}
+
+# Can't use standard_testfile, we want executables with specialized
+# names.
+set exec1 "ma-hello"
+set srcfile1 hello.c
+set binfile1 [standard_output_file ${exec1}]
+
+set exec2 "ma-hangout"
+set srcfile2 hangout.c
+set binfile2 [standard_output_file ${exec2}]
+
+# Build two executables, one for each arch.
+
+if [istarget "s390*-*-*"] {
+ set march1 "-m64"
+ set march2 "-m31"
+} else {
+ set march1 "-m64"
+ set march2 "-m32"
+}
+
+if { [prepare_for_testing ${testfile}.exp ${exec1} "${srcfile1}" \
+ [list debug nowarnings additional_flags=${march1}]] } {
+ return -1
+}
+
+if { [prepare_for_testing ${testfile}.exp ${exec2} "${srcfile2}" \
+ [list debug nowarnings additional_flags=${march2}]] } {
+ return -1
+}
+
+# Start inferior 1
+
+clean_restart ${exec1}
+if ![runto_main] then {
+ fail "starting inferior 1"
+}
+
+# Add and start inferior 2
+
+gdb_test "add-inferior" "Added inferior 2.*" "add empty inferior 2"
+gdb_test "inferior 2" "Switching to inferior 2.*" "switch to inferior 2"
+gdb_load ${binfile2}
+
+if ![runto_main] then {
+ fail "starting inferior 2"
+}
+
+# Check we do have two inferiors loaded.
+
+gdb_test "info inferiors" \
+ "Executable.*${exec2}.*${exec1}.*"
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