mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
f73b1357df
This target_ops routine appears to be unused in practice, so this patch
removes it.
gdb/ChangeLog:
* inf-child.c (inf_child_acknowledge_created_inferior): Delete.
(inf_child_target): Do not set t->to_acknowledge_created_inferior.
* inf-ptrace.c (inf_ptrace_create_inferior): Remove call to
target_acknowledge_created_inferior.
* inf-ttrace.c (inf_ttrace_him): Likewise.
* target.h (struct target_ops): Delete to_acknowledge_created_inferior
field.
(target_acknowledge_created_inferior): Delete.
* target.c (update_current_target): Remove setting of
to_acknowledge_created_inferior field. Do default value for that
field either.
(debug_to_acknowledge_created_inferior): Delete.
(setup_target_debug): Remove setting of
current_target.to_acknowledge_created_inferior.
4070 lines
110 KiB
C
4070 lines
110 KiB
C
/* Select target systems and architectures at runtime for GDB.
|
||
|
||
Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
|
||
2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
|
||
Free Software Foundation, Inc.
|
||
|
||
Contributed by Cygnus Support.
|
||
|
||
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 <errno.h>
|
||
#include "gdb_string.h"
|
||
#include "target.h"
|
||
#include "gdbcmd.h"
|
||
#include "symtab.h"
|
||
#include "inferior.h"
|
||
#include "bfd.h"
|
||
#include "symfile.h"
|
||
#include "objfiles.h"
|
||
#include "gdb_wait.h"
|
||
#include "dcache.h"
|
||
#include <signal.h>
|
||
#include "regcache.h"
|
||
#include "gdb_assert.h"
|
||
#include "gdbcore.h"
|
||
#include "exceptions.h"
|
||
#include "target-descriptions.h"
|
||
#include "gdbthread.h"
|
||
#include "solib.h"
|
||
#include "exec.h"
|
||
#include "inline-frame.h"
|
||
#include "tracepoint.h"
|
||
|
||
static void target_info (char *, int);
|
||
|
||
static void default_terminal_info (char *, int);
|
||
|
||
static int default_watchpoint_addr_within_range (struct target_ops *,
|
||
CORE_ADDR, CORE_ADDR, int);
|
||
|
||
static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int);
|
||
|
||
static int nosymbol (char *, CORE_ADDR *);
|
||
|
||
static void tcomplain (void) ATTRIBUTE_NORETURN;
|
||
|
||
static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
|
||
|
||
static int return_zero (void);
|
||
|
||
static int return_one (void);
|
||
|
||
static int return_minus_one (void);
|
||
|
||
void target_ignore (void);
|
||
|
||
static void target_command (char *, int);
|
||
|
||
static struct target_ops *find_default_run_target (char *);
|
||
|
||
static LONGEST default_xfer_partial (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, gdb_byte *readbuf,
|
||
const gdb_byte *writebuf,
|
||
ULONGEST offset, LONGEST len);
|
||
|
||
static LONGEST current_xfer_partial (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, gdb_byte *readbuf,
|
||
const gdb_byte *writebuf,
|
||
ULONGEST offset, LONGEST len);
|
||
|
||
static LONGEST target_xfer_partial (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex,
|
||
void *readbuf, const void *writebuf,
|
||
ULONGEST offset, LONGEST len);
|
||
|
||
static struct gdbarch *default_thread_architecture (struct target_ops *ops,
|
||
ptid_t ptid);
|
||
|
||
static void init_dummy_target (void);
|
||
|
||
static struct target_ops debug_target;
|
||
|
||
static void debug_to_open (char *, int);
|
||
|
||
static void debug_to_prepare_to_store (struct regcache *);
|
||
|
||
static void debug_to_files_info (struct target_ops *);
|
||
|
||
static int debug_to_insert_breakpoint (struct gdbarch *,
|
||
struct bp_target_info *);
|
||
|
||
static int debug_to_remove_breakpoint (struct gdbarch *,
|
||
struct bp_target_info *);
|
||
|
||
static int debug_to_can_use_hw_breakpoint (int, int, int);
|
||
|
||
static int debug_to_insert_hw_breakpoint (struct gdbarch *,
|
||
struct bp_target_info *);
|
||
|
||
static int debug_to_remove_hw_breakpoint (struct gdbarch *,
|
||
struct bp_target_info *);
|
||
|
||
static int debug_to_insert_watchpoint (CORE_ADDR, int, int,
|
||
struct expression *);
|
||
|
||
static int debug_to_remove_watchpoint (CORE_ADDR, int, int,
|
||
struct expression *);
|
||
|
||
static int debug_to_stopped_by_watchpoint (void);
|
||
|
||
static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
|
||
|
||
static int debug_to_watchpoint_addr_within_range (struct target_ops *,
|
||
CORE_ADDR, CORE_ADDR, int);
|
||
|
||
static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int);
|
||
|
||
static int debug_to_can_accel_watchpoint_condition (CORE_ADDR, int, int,
|
||
struct expression *);
|
||
|
||
static void debug_to_terminal_init (void);
|
||
|
||
static void debug_to_terminal_inferior (void);
|
||
|
||
static void debug_to_terminal_ours_for_output (void);
|
||
|
||
static void debug_to_terminal_save_ours (void);
|
||
|
||
static void debug_to_terminal_ours (void);
|
||
|
||
static void debug_to_terminal_info (char *, int);
|
||
|
||
static void debug_to_load (char *, int);
|
||
|
||
static int debug_to_lookup_symbol (char *, CORE_ADDR *);
|
||
|
||
static int debug_to_can_run (void);
|
||
|
||
static void debug_to_notice_signals (ptid_t);
|
||
|
||
static void debug_to_stop (ptid_t);
|
||
|
||
/* NOTE: cagney/2004-09-29: Many targets reference this variable in
|
||
wierd and mysterious ways. Putting the variable here lets those
|
||
wierd and mysterious ways keep building while they are being
|
||
converted to the inferior inheritance structure. */
|
||
struct target_ops deprecated_child_ops;
|
||
|
||
/* Pointer to array of target architecture structures; the size of the
|
||
array; the current index into the array; the allocated size of the
|
||
array. */
|
||
struct target_ops **target_structs;
|
||
unsigned target_struct_size;
|
||
unsigned target_struct_index;
|
||
unsigned target_struct_allocsize;
|
||
#define DEFAULT_ALLOCSIZE 10
|
||
|
||
/* The initial current target, so that there is always a semi-valid
|
||
current target. */
|
||
|
||
static struct target_ops dummy_target;
|
||
|
||
/* Top of target stack. */
|
||
|
||
static struct target_ops *target_stack;
|
||
|
||
/* The target structure we are currently using to talk to a process
|
||
or file or whatever "inferior" we have. */
|
||
|
||
struct target_ops current_target;
|
||
|
||
/* Command list for target. */
|
||
|
||
static struct cmd_list_element *targetlist = NULL;
|
||
|
||
/* Nonzero if we should trust readonly sections from the
|
||
executable when reading memory. */
|
||
|
||
static int trust_readonly = 0;
|
||
|
||
/* Nonzero if we should show true memory content including
|
||
memory breakpoint inserted by gdb. */
|
||
|
||
static int show_memory_breakpoints = 0;
|
||
|
||
/* These globals control whether GDB attempts to perform these
|
||
operations; they are useful for targets that need to prevent
|
||
inadvertant disruption, such as in non-stop mode. */
|
||
|
||
int may_write_registers = 1;
|
||
|
||
int may_write_memory = 1;
|
||
|
||
int may_insert_breakpoints = 1;
|
||
|
||
int may_insert_tracepoints = 1;
|
||
|
||
int may_insert_fast_tracepoints = 1;
|
||
|
||
int may_stop = 1;
|
||
|
||
/* Non-zero if we want to see trace of target level stuff. */
|
||
|
||
static int targetdebug = 0;
|
||
static void
|
||
show_targetdebug (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Target debugging is %s.\n"), value);
|
||
}
|
||
|
||
static void setup_target_debug (void);
|
||
|
||
/* The option sets this. */
|
||
static int stack_cache_enabled_p_1 = 1;
|
||
/* And set_stack_cache_enabled_p updates this.
|
||
The reason for the separation is so that we don't flush the cache for
|
||
on->on transitions. */
|
||
static int stack_cache_enabled_p = 1;
|
||
|
||
/* This is called *after* the stack-cache has been set.
|
||
Flush the cache for off->on and on->off transitions.
|
||
There's no real need to flush the cache for on->off transitions,
|
||
except cleanliness. */
|
||
|
||
static void
|
||
set_stack_cache_enabled_p (char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
if (stack_cache_enabled_p != stack_cache_enabled_p_1)
|
||
target_dcache_invalidate ();
|
||
|
||
stack_cache_enabled_p = stack_cache_enabled_p_1;
|
||
}
|
||
|
||
static void
|
||
show_stack_cache_enabled_p (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value);
|
||
}
|
||
|
||
/* Cache of memory operations, to speed up remote access. */
|
||
static DCACHE *target_dcache;
|
||
|
||
/* Invalidate the target dcache. */
|
||
|
||
void
|
||
target_dcache_invalidate (void)
|
||
{
|
||
dcache_invalidate (target_dcache);
|
||
}
|
||
|
||
/* The user just typed 'target' without the name of a target. */
|
||
|
||
static void
|
||
target_command (char *arg, int from_tty)
|
||
{
|
||
fputs_filtered ("Argument required (target name). Try `help target'\n",
|
||
gdb_stdout);
|
||
}
|
||
|
||
/* Default target_has_* methods for process_stratum targets. */
|
||
|
||
int
|
||
default_child_has_all_memory (struct target_ops *ops)
|
||
{
|
||
/* If no inferior selected, then we can't read memory here. */
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
int
|
||
default_child_has_memory (struct target_ops *ops)
|
||
{
|
||
/* If no inferior selected, then we can't read memory here. */
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
int
|
||
default_child_has_stack (struct target_ops *ops)
|
||
{
|
||
/* If no inferior selected, there's no stack. */
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
int
|
||
default_child_has_registers (struct target_ops *ops)
|
||
{
|
||
/* Can't read registers from no inferior. */
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
int
|
||
default_child_has_execution (struct target_ops *ops)
|
||
{
|
||
/* If there's no thread selected, then we can't make it run through
|
||
hoops. */
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
|
||
int
|
||
target_has_all_memory_1 (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_has_all_memory (t))
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_has_memory_1 (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_has_memory (t))
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_has_stack_1 (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_has_stack (t))
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_has_registers_1 (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_has_registers (t))
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_has_execution_1 (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_has_execution (t))
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Add a possible target architecture to the list. */
|
||
|
||
void
|
||
add_target (struct target_ops *t)
|
||
{
|
||
/* Provide default values for all "must have" methods. */
|
||
if (t->to_xfer_partial == NULL)
|
||
t->to_xfer_partial = default_xfer_partial;
|
||
|
||
if (t->to_has_all_memory == NULL)
|
||
t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
|
||
|
||
if (t->to_has_memory == NULL)
|
||
t->to_has_memory = (int (*) (struct target_ops *)) return_zero;
|
||
|
||
if (t->to_has_stack == NULL)
|
||
t->to_has_stack = (int (*) (struct target_ops *)) return_zero;
|
||
|
||
if (t->to_has_registers == NULL)
|
||
t->to_has_registers = (int (*) (struct target_ops *)) return_zero;
|
||
|
||
if (t->to_has_execution == NULL)
|
||
t->to_has_execution = (int (*) (struct target_ops *)) return_zero;
|
||
|
||
if (!target_structs)
|
||
{
|
||
target_struct_allocsize = DEFAULT_ALLOCSIZE;
|
||
target_structs = (struct target_ops **) xmalloc
|
||
(target_struct_allocsize * sizeof (*target_structs));
|
||
}
|
||
if (target_struct_size >= target_struct_allocsize)
|
||
{
|
||
target_struct_allocsize *= 2;
|
||
target_structs = (struct target_ops **)
|
||
xrealloc ((char *) target_structs,
|
||
target_struct_allocsize * sizeof (*target_structs));
|
||
}
|
||
target_structs[target_struct_size++] = t;
|
||
|
||
if (targetlist == NULL)
|
||
add_prefix_cmd ("target", class_run, target_command, _("\
|
||
Connect to a target machine or process.\n\
|
||
The first argument is the type or protocol of the target machine.\n\
|
||
Remaining arguments are interpreted by the target protocol. For more\n\
|
||
information on the arguments for a particular protocol, type\n\
|
||
`help target ' followed by the protocol name."),
|
||
&targetlist, "target ", 0, &cmdlist);
|
||
add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist);
|
||
}
|
||
|
||
/* Stub functions */
|
||
|
||
void
|
||
target_ignore (void)
|
||
{
|
||
}
|
||
|
||
void
|
||
target_kill (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_kill != NULL)
|
||
{
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
|
||
|
||
t->to_kill (t);
|
||
return;
|
||
}
|
||
|
||
noprocess ();
|
||
}
|
||
|
||
void
|
||
target_load (char *arg, int from_tty)
|
||
{
|
||
target_dcache_invalidate ();
|
||
(*current_target.to_load) (arg, from_tty);
|
||
}
|
||
|
||
void
|
||
target_create_inferior (char *exec_file, char *args,
|
||
char **env, int from_tty)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_create_inferior != NULL)
|
||
{
|
||
t->to_create_inferior (t, exec_file, args, env, from_tty);
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_create_inferior (%s, %s, xxx, %d)\n",
|
||
exec_file, args, from_tty);
|
||
return;
|
||
}
|
||
}
|
||
|
||
internal_error (__FILE__, __LINE__,
|
||
"could not find a target to create inferior");
|
||
}
|
||
|
||
void
|
||
target_terminal_inferior (void)
|
||
{
|
||
/* A background resume (``run&'') should leave GDB in control of the
|
||
terminal. Use target_can_async_p, not target_is_async_p, since at
|
||
this point the target is not async yet. However, if sync_execution
|
||
is not set, we know it will become async prior to resume. */
|
||
if (target_can_async_p () && !sync_execution)
|
||
return;
|
||
|
||
/* If GDB is resuming the inferior in the foreground, install
|
||
inferior's terminal modes. */
|
||
(*current_target.to_terminal_inferior) ();
|
||
}
|
||
|
||
static int
|
||
nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
|
||
struct target_ops *t)
|
||
{
|
||
errno = EIO; /* Can't read/write this location */
|
||
return 0; /* No bytes handled */
|
||
}
|
||
|
||
static void
|
||
tcomplain (void)
|
||
{
|
||
error (_("You can't do that when your target is `%s'"),
|
||
current_target.to_shortname);
|
||
}
|
||
|
||
void
|
||
noprocess (void)
|
||
{
|
||
error (_("You can't do that without a process to debug."));
|
||
}
|
||
|
||
static int
|
||
nosymbol (char *name, CORE_ADDR *addrp)
|
||
{
|
||
return 1; /* Symbol does not exist in target env */
|
||
}
|
||
|
||
static void
|
||
default_terminal_info (char *args, int from_tty)
|
||
{
|
||
printf_unfiltered (_("No saved terminal information.\n"));
|
||
}
|
||
|
||
/* A default implementation for the to_get_ada_task_ptid target method.
|
||
|
||
This function builds the PTID by using both LWP and TID as part of
|
||
the PTID lwp and tid elements. The pid used is the pid of the
|
||
inferior_ptid. */
|
||
|
||
static ptid_t
|
||
default_get_ada_task_ptid (long lwp, long tid)
|
||
{
|
||
return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
|
||
}
|
||
|
||
/* Go through the target stack from top to bottom, copying over zero
|
||
entries in current_target, then filling in still empty entries. In
|
||
effect, we are doing class inheritance through the pushed target
|
||
vectors.
|
||
|
||
NOTE: cagney/2003-10-17: The problem with this inheritance, as it
|
||
is currently implemented, is that it discards any knowledge of
|
||
which target an inherited method originally belonged to.
|
||
Consequently, new new target methods should instead explicitly and
|
||
locally search the target stack for the target that can handle the
|
||
request. */
|
||
|
||
static void
|
||
update_current_target (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* First, reset current's contents. */
|
||
memset (¤t_target, 0, sizeof (current_target));
|
||
|
||
#define INHERIT(FIELD, TARGET) \
|
||
if (!current_target.FIELD) \
|
||
current_target.FIELD = (TARGET)->FIELD
|
||
|
||
for (t = target_stack; t; t = t->beneath)
|
||
{
|
||
INHERIT (to_shortname, t);
|
||
INHERIT (to_longname, t);
|
||
INHERIT (to_doc, t);
|
||
/* Do not inherit to_open. */
|
||
/* Do not inherit to_close. */
|
||
/* Do not inherit to_attach. */
|
||
INHERIT (to_post_attach, t);
|
||
INHERIT (to_attach_no_wait, t);
|
||
/* Do not inherit to_detach. */
|
||
/* Do not inherit to_disconnect. */
|
||
/* Do not inherit to_resume. */
|
||
/* Do not inherit to_wait. */
|
||
/* Do not inherit to_fetch_registers. */
|
||
/* Do not inherit to_store_registers. */
|
||
INHERIT (to_prepare_to_store, t);
|
||
INHERIT (deprecated_xfer_memory, t);
|
||
INHERIT (to_files_info, t);
|
||
INHERIT (to_insert_breakpoint, t);
|
||
INHERIT (to_remove_breakpoint, t);
|
||
INHERIT (to_can_use_hw_breakpoint, t);
|
||
INHERIT (to_insert_hw_breakpoint, t);
|
||
INHERIT (to_remove_hw_breakpoint, t);
|
||
INHERIT (to_insert_watchpoint, t);
|
||
INHERIT (to_remove_watchpoint, t);
|
||
INHERIT (to_stopped_data_address, t);
|
||
INHERIT (to_have_steppable_watchpoint, t);
|
||
INHERIT (to_have_continuable_watchpoint, t);
|
||
INHERIT (to_stopped_by_watchpoint, t);
|
||
INHERIT (to_watchpoint_addr_within_range, t);
|
||
INHERIT (to_region_ok_for_hw_watchpoint, t);
|
||
INHERIT (to_can_accel_watchpoint_condition, t);
|
||
INHERIT (to_terminal_init, t);
|
||
INHERIT (to_terminal_inferior, t);
|
||
INHERIT (to_terminal_ours_for_output, t);
|
||
INHERIT (to_terminal_ours, t);
|
||
INHERIT (to_terminal_save_ours, t);
|
||
INHERIT (to_terminal_info, t);
|
||
/* Do not inherit to_kill. */
|
||
INHERIT (to_load, t);
|
||
INHERIT (to_lookup_symbol, t);
|
||
/* Do no inherit to_create_inferior. */
|
||
INHERIT (to_post_startup_inferior, t);
|
||
INHERIT (to_insert_fork_catchpoint, t);
|
||
INHERIT (to_remove_fork_catchpoint, t);
|
||
INHERIT (to_insert_vfork_catchpoint, t);
|
||
INHERIT (to_remove_vfork_catchpoint, t);
|
||
/* Do not inherit to_follow_fork. */
|
||
INHERIT (to_insert_exec_catchpoint, t);
|
||
INHERIT (to_remove_exec_catchpoint, t);
|
||
INHERIT (to_set_syscall_catchpoint, t);
|
||
INHERIT (to_has_exited, t);
|
||
/* Do not inherit to_mourn_inferior. */
|
||
INHERIT (to_can_run, t);
|
||
INHERIT (to_notice_signals, t);
|
||
/* Do not inherit to_thread_alive. */
|
||
/* Do not inherit to_find_new_threads. */
|
||
/* Do not inherit to_pid_to_str. */
|
||
INHERIT (to_extra_thread_info, t);
|
||
INHERIT (to_stop, t);
|
||
/* Do not inherit to_xfer_partial. */
|
||
INHERIT (to_rcmd, t);
|
||
INHERIT (to_pid_to_exec_file, t);
|
||
INHERIT (to_log_command, t);
|
||
INHERIT (to_stratum, t);
|
||
/* Do not inherit to_has_all_memory */
|
||
/* Do not inherit to_has_memory */
|
||
/* Do not inherit to_has_stack */
|
||
/* Do not inherit to_has_registers */
|
||
/* Do not inherit to_has_execution */
|
||
INHERIT (to_has_thread_control, t);
|
||
INHERIT (to_can_async_p, t);
|
||
INHERIT (to_is_async_p, t);
|
||
INHERIT (to_async, t);
|
||
INHERIT (to_async_mask, t);
|
||
INHERIT (to_find_memory_regions, t);
|
||
INHERIT (to_make_corefile_notes, t);
|
||
INHERIT (to_get_bookmark, t);
|
||
INHERIT (to_goto_bookmark, t);
|
||
/* Do not inherit to_get_thread_local_address. */
|
||
INHERIT (to_can_execute_reverse, t);
|
||
INHERIT (to_thread_architecture, t);
|
||
/* Do not inherit to_read_description. */
|
||
INHERIT (to_get_ada_task_ptid, t);
|
||
/* Do not inherit to_search_memory. */
|
||
INHERIT (to_supports_multi_process, t);
|
||
INHERIT (to_trace_init, t);
|
||
INHERIT (to_download_tracepoint, t);
|
||
INHERIT (to_download_trace_state_variable, t);
|
||
INHERIT (to_trace_set_readonly_regions, t);
|
||
INHERIT (to_trace_start, t);
|
||
INHERIT (to_get_trace_status, t);
|
||
INHERIT (to_trace_stop, t);
|
||
INHERIT (to_trace_find, t);
|
||
INHERIT (to_get_trace_state_variable_value, t);
|
||
INHERIT (to_save_trace_data, t);
|
||
INHERIT (to_upload_tracepoints, t);
|
||
INHERIT (to_upload_trace_state_variables, t);
|
||
INHERIT (to_get_raw_trace_data, t);
|
||
INHERIT (to_set_disconnected_tracing, t);
|
||
INHERIT (to_set_circular_trace_buffer, t);
|
||
INHERIT (to_get_tib_address, t);
|
||
INHERIT (to_set_permissions, t);
|
||
INHERIT (to_static_tracepoint_marker_at, t);
|
||
INHERIT (to_static_tracepoint_markers_by_strid, t);
|
||
INHERIT (to_magic, t);
|
||
/* Do not inherit to_memory_map. */
|
||
/* Do not inherit to_flash_erase. */
|
||
/* Do not inherit to_flash_done. */
|
||
}
|
||
#undef INHERIT
|
||
|
||
/* Clean up a target struct so it no longer has any zero pointers in
|
||
it. Some entries are defaulted to a method that print an error,
|
||
others are hard-wired to a standard recursive default. */
|
||
|
||
#define de_fault(field, value) \
|
||
if (!current_target.field) \
|
||
current_target.field = value
|
||
|
||
de_fault (to_open,
|
||
(void (*) (char *, int))
|
||
tcomplain);
|
||
de_fault (to_close,
|
||
(void (*) (int))
|
||
target_ignore);
|
||
de_fault (to_post_attach,
|
||
(void (*) (int))
|
||
target_ignore);
|
||
de_fault (to_prepare_to_store,
|
||
(void (*) (struct regcache *))
|
||
noprocess);
|
||
de_fault (deprecated_xfer_memory,
|
||
(int (*) (CORE_ADDR, gdb_byte *, int, int, struct mem_attrib *, struct target_ops *))
|
||
nomemory);
|
||
de_fault (to_files_info,
|
||
(void (*) (struct target_ops *))
|
||
target_ignore);
|
||
de_fault (to_insert_breakpoint,
|
||
memory_insert_breakpoint);
|
||
de_fault (to_remove_breakpoint,
|
||
memory_remove_breakpoint);
|
||
de_fault (to_can_use_hw_breakpoint,
|
||
(int (*) (int, int, int))
|
||
return_zero);
|
||
de_fault (to_insert_hw_breakpoint,
|
||
(int (*) (struct gdbarch *, struct bp_target_info *))
|
||
return_minus_one);
|
||
de_fault (to_remove_hw_breakpoint,
|
||
(int (*) (struct gdbarch *, struct bp_target_info *))
|
||
return_minus_one);
|
||
de_fault (to_insert_watchpoint,
|
||
(int (*) (CORE_ADDR, int, int, struct expression *))
|
||
return_minus_one);
|
||
de_fault (to_remove_watchpoint,
|
||
(int (*) (CORE_ADDR, int, int, struct expression *))
|
||
return_minus_one);
|
||
de_fault (to_stopped_by_watchpoint,
|
||
(int (*) (void))
|
||
return_zero);
|
||
de_fault (to_stopped_data_address,
|
||
(int (*) (struct target_ops *, CORE_ADDR *))
|
||
return_zero);
|
||
de_fault (to_watchpoint_addr_within_range,
|
||
default_watchpoint_addr_within_range);
|
||
de_fault (to_region_ok_for_hw_watchpoint,
|
||
default_region_ok_for_hw_watchpoint);
|
||
de_fault (to_can_accel_watchpoint_condition,
|
||
(int (*) (CORE_ADDR, int, int, struct expression *))
|
||
return_zero);
|
||
de_fault (to_terminal_init,
|
||
(void (*) (void))
|
||
target_ignore);
|
||
de_fault (to_terminal_inferior,
|
||
(void (*) (void))
|
||
target_ignore);
|
||
de_fault (to_terminal_ours_for_output,
|
||
(void (*) (void))
|
||
target_ignore);
|
||
de_fault (to_terminal_ours,
|
||
(void (*) (void))
|
||
target_ignore);
|
||
de_fault (to_terminal_save_ours,
|
||
(void (*) (void))
|
||
target_ignore);
|
||
de_fault (to_terminal_info,
|
||
default_terminal_info);
|
||
de_fault (to_load,
|
||
(void (*) (char *, int))
|
||
tcomplain);
|
||
de_fault (to_lookup_symbol,
|
||
(int (*) (char *, CORE_ADDR *))
|
||
nosymbol);
|
||
de_fault (to_post_startup_inferior,
|
||
(void (*) (ptid_t))
|
||
target_ignore);
|
||
de_fault (to_insert_fork_catchpoint,
|
||
(void (*) (int))
|
||
tcomplain);
|
||
de_fault (to_remove_fork_catchpoint,
|
||
(int (*) (int))
|
||
tcomplain);
|
||
de_fault (to_insert_vfork_catchpoint,
|
||
(void (*) (int))
|
||
tcomplain);
|
||
de_fault (to_remove_vfork_catchpoint,
|
||
(int (*) (int))
|
||
tcomplain);
|
||
de_fault (to_insert_exec_catchpoint,
|
||
(void (*) (int))
|
||
tcomplain);
|
||
de_fault (to_remove_exec_catchpoint,
|
||
(int (*) (int))
|
||
tcomplain);
|
||
de_fault (to_set_syscall_catchpoint,
|
||
(int (*) (int, int, int, int, int *))
|
||
tcomplain);
|
||
de_fault (to_has_exited,
|
||
(int (*) (int, int, int *))
|
||
return_zero);
|
||
de_fault (to_can_run,
|
||
return_zero);
|
||
de_fault (to_notice_signals,
|
||
(void (*) (ptid_t))
|
||
target_ignore);
|
||
de_fault (to_extra_thread_info,
|
||
(char *(*) (struct thread_info *))
|
||
return_zero);
|
||
de_fault (to_stop,
|
||
(void (*) (ptid_t))
|
||
target_ignore);
|
||
current_target.to_xfer_partial = current_xfer_partial;
|
||
de_fault (to_rcmd,
|
||
(void (*) (char *, struct ui_file *))
|
||
tcomplain);
|
||
de_fault (to_pid_to_exec_file,
|
||
(char *(*) (int))
|
||
return_zero);
|
||
de_fault (to_async,
|
||
(void (*) (void (*) (enum inferior_event_type, void*), void*))
|
||
tcomplain);
|
||
de_fault (to_async_mask,
|
||
(int (*) (int))
|
||
return_one);
|
||
de_fault (to_thread_architecture,
|
||
default_thread_architecture);
|
||
current_target.to_read_description = NULL;
|
||
de_fault (to_get_ada_task_ptid,
|
||
(ptid_t (*) (long, long))
|
||
default_get_ada_task_ptid);
|
||
de_fault (to_supports_multi_process,
|
||
(int (*) (void))
|
||
return_zero);
|
||
de_fault (to_trace_init,
|
||
(void (*) (void))
|
||
tcomplain);
|
||
de_fault (to_download_tracepoint,
|
||
(void (*) (struct breakpoint *))
|
||
tcomplain);
|
||
de_fault (to_download_trace_state_variable,
|
||
(void (*) (struct trace_state_variable *))
|
||
tcomplain);
|
||
de_fault (to_trace_set_readonly_regions,
|
||
(void (*) (void))
|
||
tcomplain);
|
||
de_fault (to_trace_start,
|
||
(void (*) (void))
|
||
tcomplain);
|
||
de_fault (to_get_trace_status,
|
||
(int (*) (struct trace_status *))
|
||
return_minus_one);
|
||
de_fault (to_trace_stop,
|
||
(void (*) (void))
|
||
tcomplain);
|
||
de_fault (to_trace_find,
|
||
(int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *))
|
||
return_minus_one);
|
||
de_fault (to_get_trace_state_variable_value,
|
||
(int (*) (int, LONGEST *))
|
||
return_zero);
|
||
de_fault (to_save_trace_data,
|
||
(int (*) (const char *))
|
||
tcomplain);
|
||
de_fault (to_upload_tracepoints,
|
||
(int (*) (struct uploaded_tp **))
|
||
return_zero);
|
||
de_fault (to_upload_trace_state_variables,
|
||
(int (*) (struct uploaded_tsv **))
|
||
return_zero);
|
||
de_fault (to_get_raw_trace_data,
|
||
(LONGEST (*) (gdb_byte *, ULONGEST, LONGEST))
|
||
tcomplain);
|
||
de_fault (to_set_disconnected_tracing,
|
||
(void (*) (int))
|
||
target_ignore);
|
||
de_fault (to_set_circular_trace_buffer,
|
||
(void (*) (int))
|
||
target_ignore);
|
||
de_fault (to_get_tib_address,
|
||
(int (*) (ptid_t, CORE_ADDR *))
|
||
tcomplain);
|
||
de_fault (to_set_permissions,
|
||
(void (*) (void))
|
||
target_ignore);
|
||
de_fault (to_static_tracepoint_marker_at,
|
||
(int (*) (CORE_ADDR, struct static_tracepoint_marker *))
|
||
return_zero);
|
||
de_fault (to_static_tracepoint_markers_by_strid,
|
||
(VEC(static_tracepoint_marker_p) * (*) (const char *))
|
||
tcomplain);
|
||
#undef de_fault
|
||
|
||
/* Finally, position the target-stack beneath the squashed
|
||
"current_target". That way code looking for a non-inherited
|
||
target method can quickly and simply find it. */
|
||
current_target.beneath = target_stack;
|
||
|
||
if (targetdebug)
|
||
setup_target_debug ();
|
||
}
|
||
|
||
/* Push a new target type into the stack of the existing target accessors,
|
||
possibly superseding some of the existing accessors.
|
||
|
||
Rather than allow an empty stack, we always have the dummy target at
|
||
the bottom stratum, so we can call the function vectors without
|
||
checking them. */
|
||
|
||
void
|
||
push_target (struct target_ops *t)
|
||
{
|
||
struct target_ops **cur;
|
||
|
||
/* Check magic number. If wrong, it probably means someone changed
|
||
the struct definition, but not all the places that initialize one. */
|
||
if (t->to_magic != OPS_MAGIC)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr,
|
||
"Magic number of %s target struct wrong\n",
|
||
t->to_shortname);
|
||
internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
|
||
}
|
||
|
||
/* Find the proper stratum to install this target in. */
|
||
for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
|
||
{
|
||
if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
|
||
break;
|
||
}
|
||
|
||
/* If there's already targets at this stratum, remove them. */
|
||
/* FIXME: cagney/2003-10-15: I think this should be popping all
|
||
targets to CUR, and not just those at this stratum level. */
|
||
while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
|
||
{
|
||
/* There's already something at this stratum level. Close it,
|
||
and un-hook it from the stack. */
|
||
struct target_ops *tmp = (*cur);
|
||
|
||
(*cur) = (*cur)->beneath;
|
||
tmp->beneath = NULL;
|
||
target_close (tmp, 0);
|
||
}
|
||
|
||
/* We have removed all targets in our stratum, now add the new one. */
|
||
t->beneath = (*cur);
|
||
(*cur) = t;
|
||
|
||
update_current_target ();
|
||
}
|
||
|
||
/* Remove a target_ops vector from the stack, wherever it may be.
|
||
Return how many times it was removed (0 or 1). */
|
||
|
||
int
|
||
unpush_target (struct target_ops *t)
|
||
{
|
||
struct target_ops **cur;
|
||
struct target_ops *tmp;
|
||
|
||
if (t->to_stratum == dummy_stratum)
|
||
internal_error (__FILE__, __LINE__,
|
||
"Attempt to unpush the dummy target");
|
||
|
||
/* Look for the specified target. Note that we assume that a target
|
||
can only occur once in the target stack. */
|
||
|
||
for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
|
||
{
|
||
if ((*cur) == t)
|
||
break;
|
||
}
|
||
|
||
if ((*cur) == NULL)
|
||
return 0; /* Didn't find target_ops, quit now */
|
||
|
||
/* NOTE: cagney/2003-12-06: In '94 the close call was made
|
||
unconditional by moving it to before the above check that the
|
||
target was in the target stack (something about "Change the way
|
||
pushing and popping of targets work to support target overlays
|
||
and inheritance"). This doesn't make much sense - only open
|
||
targets should be closed. */
|
||
target_close (t, 0);
|
||
|
||
/* Unchain the target */
|
||
tmp = (*cur);
|
||
(*cur) = (*cur)->beneath;
|
||
tmp->beneath = NULL;
|
||
|
||
update_current_target ();
|
||
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
pop_target (void)
|
||
{
|
||
target_close (target_stack, 0); /* Let it clean up */
|
||
if (unpush_target (target_stack) == 1)
|
||
return;
|
||
|
||
fprintf_unfiltered (gdb_stderr,
|
||
"pop_target couldn't find target %s\n",
|
||
current_target.to_shortname);
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
}
|
||
|
||
void
|
||
pop_all_targets_above (enum strata above_stratum, int quitting)
|
||
{
|
||
while ((int) (current_target.to_stratum) > (int) above_stratum)
|
||
{
|
||
target_close (target_stack, quitting);
|
||
if (!unpush_target (target_stack))
|
||
{
|
||
fprintf_unfiltered (gdb_stderr,
|
||
"pop_all_targets couldn't find target %s\n",
|
||
target_stack->to_shortname);
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
pop_all_targets (int quitting)
|
||
{
|
||
pop_all_targets_above (dummy_stratum, quitting);
|
||
}
|
||
|
||
/* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
|
||
|
||
int
|
||
target_is_pushed (struct target_ops *t)
|
||
{
|
||
struct target_ops **cur;
|
||
|
||
/* Check magic number. If wrong, it probably means someone changed
|
||
the struct definition, but not all the places that initialize one. */
|
||
if (t->to_magic != OPS_MAGIC)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr,
|
||
"Magic number of %s target struct wrong\n",
|
||
t->to_shortname);
|
||
internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
|
||
}
|
||
|
||
for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
|
||
if (*cur == t)
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Using the objfile specified in OBJFILE, find the address for the
|
||
current thread's thread-local storage with offset OFFSET. */
|
||
CORE_ADDR
|
||
target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
|
||
{
|
||
volatile CORE_ADDR addr = 0;
|
||
struct target_ops *target;
|
||
|
||
for (target = current_target.beneath;
|
||
target != NULL;
|
||
target = target->beneath)
|
||
{
|
||
if (target->to_get_thread_local_address != NULL)
|
||
break;
|
||
}
|
||
|
||
if (target != NULL
|
||
&& gdbarch_fetch_tls_load_module_address_p (target_gdbarch))
|
||
{
|
||
ptid_t ptid = inferior_ptid;
|
||
volatile struct gdb_exception ex;
|
||
|
||
TRY_CATCH (ex, RETURN_MASK_ALL)
|
||
{
|
||
CORE_ADDR lm_addr;
|
||
|
||
/* Fetch the load module address for this objfile. */
|
||
lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch,
|
||
objfile);
|
||
/* If it's 0, throw the appropriate exception. */
|
||
if (lm_addr == 0)
|
||
throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR,
|
||
_("TLS load module not found"));
|
||
|
||
addr = target->to_get_thread_local_address (target, ptid, lm_addr, offset);
|
||
}
|
||
/* If an error occurred, print TLS related messages here. Otherwise,
|
||
throw the error to some higher catcher. */
|
||
if (ex.reason < 0)
|
||
{
|
||
int objfile_is_library = (objfile->flags & OBJF_SHARED);
|
||
|
||
switch (ex.error)
|
||
{
|
||
case TLS_NO_LIBRARY_SUPPORT_ERROR:
|
||
error (_("Cannot find thread-local variables in this thread library."));
|
||
break;
|
||
case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
|
||
if (objfile_is_library)
|
||
error (_("Cannot find shared library `%s' in dynamic"
|
||
" linker's load module list"), objfile->name);
|
||
else
|
||
error (_("Cannot find executable file `%s' in dynamic"
|
||
" linker's load module list"), objfile->name);
|
||
break;
|
||
case TLS_NOT_ALLOCATED_YET_ERROR:
|
||
if (objfile_is_library)
|
||
error (_("The inferior has not yet allocated storage for"
|
||
" thread-local variables in\n"
|
||
"the shared library `%s'\n"
|
||
"for %s"),
|
||
objfile->name, target_pid_to_str (ptid));
|
||
else
|
||
error (_("The inferior has not yet allocated storage for"
|
||
" thread-local variables in\n"
|
||
"the executable `%s'\n"
|
||
"for %s"),
|
||
objfile->name, target_pid_to_str (ptid));
|
||
break;
|
||
case TLS_GENERIC_ERROR:
|
||
if (objfile_is_library)
|
||
error (_("Cannot find thread-local storage for %s, "
|
||
"shared library %s:\n%s"),
|
||
target_pid_to_str (ptid),
|
||
objfile->name, ex.message);
|
||
else
|
||
error (_("Cannot find thread-local storage for %s, "
|
||
"executable file %s:\n%s"),
|
||
target_pid_to_str (ptid),
|
||
objfile->name, ex.message);
|
||
break;
|
||
default:
|
||
throw_exception (ex);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
/* It wouldn't be wrong here to try a gdbarch method, too; finding
|
||
TLS is an ABI-specific thing. But we don't do that yet. */
|
||
else
|
||
error (_("Cannot find thread-local variables on this target"));
|
||
|
||
return addr;
|
||
}
|
||
|
||
#undef MIN
|
||
#define MIN(A, B) (((A) <= (B)) ? (A) : (B))
|
||
|
||
/* target_read_string -- read a null terminated string, up to LEN bytes,
|
||
from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
|
||
Set *STRING to a pointer to malloc'd memory containing the data; the caller
|
||
is responsible for freeing it. Return the number of bytes successfully
|
||
read. */
|
||
|
||
int
|
||
target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
|
||
{
|
||
int tlen, origlen, offset, i;
|
||
gdb_byte buf[4];
|
||
int errcode = 0;
|
||
char *buffer;
|
||
int buffer_allocated;
|
||
char *bufptr;
|
||
unsigned int nbytes_read = 0;
|
||
|
||
gdb_assert (string);
|
||
|
||
/* Small for testing. */
|
||
buffer_allocated = 4;
|
||
buffer = xmalloc (buffer_allocated);
|
||
bufptr = buffer;
|
||
|
||
origlen = len;
|
||
|
||
while (len > 0)
|
||
{
|
||
tlen = MIN (len, 4 - (memaddr & 3));
|
||
offset = memaddr & 3;
|
||
|
||
errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
|
||
if (errcode != 0)
|
||
{
|
||
/* The transfer request might have crossed the boundary to an
|
||
unallocated region of memory. Retry the transfer, requesting
|
||
a single byte. */
|
||
tlen = 1;
|
||
offset = 0;
|
||
errcode = target_read_memory (memaddr, buf, 1);
|
||
if (errcode != 0)
|
||
goto done;
|
||
}
|
||
|
||
if (bufptr - buffer + tlen > buffer_allocated)
|
||
{
|
||
unsigned int bytes;
|
||
|
||
bytes = bufptr - buffer;
|
||
buffer_allocated *= 2;
|
||
buffer = xrealloc (buffer, buffer_allocated);
|
||
bufptr = buffer + bytes;
|
||
}
|
||
|
||
for (i = 0; i < tlen; i++)
|
||
{
|
||
*bufptr++ = buf[i + offset];
|
||
if (buf[i + offset] == '\000')
|
||
{
|
||
nbytes_read += i + 1;
|
||
goto done;
|
||
}
|
||
}
|
||
|
||
memaddr += tlen;
|
||
len -= tlen;
|
||
nbytes_read += tlen;
|
||
}
|
||
done:
|
||
*string = buffer;
|
||
if (errnop != NULL)
|
||
*errnop = errcode;
|
||
return nbytes_read;
|
||
}
|
||
|
||
struct target_section_table *
|
||
target_get_section_table (struct target_ops *target)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n");
|
||
|
||
for (t = target; t != NULL; t = t->beneath)
|
||
if (t->to_get_section_table != NULL)
|
||
return (*t->to_get_section_table) (t);
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Find a section containing ADDR. */
|
||
|
||
struct target_section *
|
||
target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
|
||
{
|
||
struct target_section_table *table = target_get_section_table (target);
|
||
struct target_section *secp;
|
||
|
||
if (table == NULL)
|
||
return NULL;
|
||
|
||
for (secp = table->sections; secp < table->sections_end; secp++)
|
||
{
|
||
if (addr >= secp->addr && addr < secp->endaddr)
|
||
return secp;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* Perform a partial memory transfer.
|
||
For docs see target.h, to_xfer_partial. */
|
||
|
||
static LONGEST
|
||
memory_xfer_partial (struct target_ops *ops, enum target_object object,
|
||
void *readbuf, const void *writebuf, ULONGEST memaddr,
|
||
LONGEST len)
|
||
{
|
||
LONGEST res;
|
||
int reg_len;
|
||
struct mem_region *region;
|
||
struct inferior *inf;
|
||
|
||
/* Zero length requests are ok and require no work. */
|
||
if (len == 0)
|
||
return 0;
|
||
|
||
/* For accesses to unmapped overlay sections, read directly from
|
||
files. Must do this first, as MEMADDR may need adjustment. */
|
||
if (readbuf != NULL && overlay_debugging)
|
||
{
|
||
struct obj_section *section = find_pc_overlay (memaddr);
|
||
|
||
if (pc_in_unmapped_range (memaddr, section))
|
||
{
|
||
struct target_section_table *table
|
||
= target_get_section_table (ops);
|
||
const char *section_name = section->the_bfd_section->name;
|
||
|
||
memaddr = overlay_mapped_address (memaddr, section);
|
||
return section_table_xfer_memory_partial (readbuf, writebuf,
|
||
memaddr, len,
|
||
table->sections,
|
||
table->sections_end,
|
||
section_name);
|
||
}
|
||
}
|
||
|
||
/* Try the executable files, if "trust-readonly-sections" is set. */
|
||
if (readbuf != NULL && trust_readonly)
|
||
{
|
||
struct target_section *secp;
|
||
struct target_section_table *table;
|
||
|
||
secp = target_section_by_addr (ops, memaddr);
|
||
if (secp != NULL
|
||
&& (bfd_get_section_flags (secp->bfd, secp->the_bfd_section)
|
||
& SEC_READONLY))
|
||
{
|
||
table = target_get_section_table (ops);
|
||
return section_table_xfer_memory_partial (readbuf, writebuf,
|
||
memaddr, len,
|
||
table->sections,
|
||
table->sections_end,
|
||
NULL);
|
||
}
|
||
}
|
||
|
||
/* Try GDB's internal data cache. */
|
||
region = lookup_mem_region (memaddr);
|
||
/* region->hi == 0 means there's no upper bound. */
|
||
if (memaddr + len < region->hi || region->hi == 0)
|
||
reg_len = len;
|
||
else
|
||
reg_len = region->hi - memaddr;
|
||
|
||
switch (region->attrib.mode)
|
||
{
|
||
case MEM_RO:
|
||
if (writebuf != NULL)
|
||
return -1;
|
||
break;
|
||
|
||
case MEM_WO:
|
||
if (readbuf != NULL)
|
||
return -1;
|
||
break;
|
||
|
||
case MEM_FLASH:
|
||
/* We only support writing to flash during "load" for now. */
|
||
if (writebuf != NULL)
|
||
error (_("Writing to flash memory forbidden in this context"));
|
||
break;
|
||
|
||
case MEM_NONE:
|
||
return -1;
|
||
}
|
||
|
||
if (!ptid_equal (inferior_ptid, null_ptid))
|
||
inf = find_inferior_pid (ptid_get_pid (inferior_ptid));
|
||
else
|
||
inf = NULL;
|
||
|
||
if (inf != NULL
|
||
/* The dcache reads whole cache lines; that doesn't play well
|
||
with reading from a trace buffer, because reading outside of
|
||
the collected memory range fails. */
|
||
&& get_traceframe_number () == -1
|
||
&& (region->attrib.cache
|
||
|| (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY)))
|
||
{
|
||
if (readbuf != NULL)
|
||
res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf,
|
||
reg_len, 0);
|
||
else
|
||
/* FIXME drow/2006-08-09: If we're going to preserve const
|
||
correctness dcache_xfer_memory should take readbuf and
|
||
writebuf. */
|
||
res = dcache_xfer_memory (ops, target_dcache, memaddr,
|
||
(void *) writebuf,
|
||
reg_len, 1);
|
||
if (res <= 0)
|
||
return -1;
|
||
else
|
||
{
|
||
if (readbuf && !show_memory_breakpoints)
|
||
breakpoint_restore_shadows (readbuf, memaddr, reg_len);
|
||
return res;
|
||
}
|
||
}
|
||
|
||
/* If none of those methods found the memory we wanted, fall back
|
||
to a target partial transfer. Normally a single call to
|
||
to_xfer_partial is enough; if it doesn't recognize an object
|
||
it will call the to_xfer_partial of the next target down.
|
||
But for memory this won't do. Memory is the only target
|
||
object which can be read from more than one valid target.
|
||
A core file, for instance, could have some of memory but
|
||
delegate other bits to the target below it. So, we must
|
||
manually try all targets. */
|
||
|
||
do
|
||
{
|
||
res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
readbuf, writebuf, memaddr, reg_len);
|
||
if (res > 0)
|
||
break;
|
||
|
||
/* We want to continue past core files to executables, but not
|
||
past a running target's memory. */
|
||
if (ops->to_has_all_memory (ops))
|
||
break;
|
||
|
||
ops = ops->beneath;
|
||
}
|
||
while (ops != NULL);
|
||
|
||
if (readbuf && !show_memory_breakpoints)
|
||
breakpoint_restore_shadows (readbuf, memaddr, reg_len);
|
||
|
||
/* Make sure the cache gets updated no matter what - if we are writing
|
||
to the stack. Even if this write is not tagged as such, we still need
|
||
to update the cache. */
|
||
|
||
if (res > 0
|
||
&& inf != NULL
|
||
&& writebuf != NULL
|
||
&& !region->attrib.cache
|
||
&& stack_cache_enabled_p
|
||
&& object != TARGET_OBJECT_STACK_MEMORY)
|
||
{
|
||
dcache_update (target_dcache, memaddr, (void *) writebuf, res);
|
||
}
|
||
|
||
/* If we still haven't got anything, return the last error. We
|
||
give up. */
|
||
return res;
|
||
}
|
||
|
||
static void
|
||
restore_show_memory_breakpoints (void *arg)
|
||
{
|
||
show_memory_breakpoints = (uintptr_t) arg;
|
||
}
|
||
|
||
struct cleanup *
|
||
make_show_memory_breakpoints_cleanup (int show)
|
||
{
|
||
int current = show_memory_breakpoints;
|
||
|
||
show_memory_breakpoints = show;
|
||
return make_cleanup (restore_show_memory_breakpoints,
|
||
(void *) (uintptr_t) current);
|
||
}
|
||
|
||
/* For docs see target.h, to_xfer_partial. */
|
||
|
||
static LONGEST
|
||
target_xfer_partial (struct target_ops *ops,
|
||
enum target_object object, const char *annex,
|
||
void *readbuf, const void *writebuf,
|
||
ULONGEST offset, LONGEST len)
|
||
{
|
||
LONGEST retval;
|
||
|
||
gdb_assert (ops->to_xfer_partial != NULL);
|
||
|
||
if (writebuf && !may_write_memory)
|
||
error (_("Writing to memory is not allowed (addr %s, len %s)"),
|
||
core_addr_to_string_nz (offset), plongest (len));
|
||
|
||
/* If this is a memory transfer, let the memory-specific code
|
||
have a look at it instead. Memory transfers are more
|
||
complicated. */
|
||
if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY)
|
||
retval = memory_xfer_partial (ops, object, readbuf,
|
||
writebuf, offset, len);
|
||
else
|
||
{
|
||
enum target_object raw_object = object;
|
||
|
||
/* If this is a raw memory transfer, request the normal
|
||
memory object from other layers. */
|
||
if (raw_object == TARGET_OBJECT_RAW_MEMORY)
|
||
raw_object = TARGET_OBJECT_MEMORY;
|
||
|
||
retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf,
|
||
writebuf, offset, len);
|
||
}
|
||
|
||
if (targetdebug)
|
||
{
|
||
const unsigned char *myaddr = NULL;
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s",
|
||
ops->to_shortname,
|
||
(int) object,
|
||
(annex ? annex : "(null)"),
|
||
host_address_to_string (readbuf),
|
||
host_address_to_string (writebuf),
|
||
core_addr_to_string_nz (offset),
|
||
plongest (len), plongest (retval));
|
||
|
||
if (readbuf)
|
||
myaddr = readbuf;
|
||
if (writebuf)
|
||
myaddr = writebuf;
|
||
if (retval > 0 && myaddr != NULL)
|
||
{
|
||
int i;
|
||
|
||
fputs_unfiltered (", bytes =", gdb_stdlog);
|
||
for (i = 0; i < retval; i++)
|
||
{
|
||
if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
|
||
{
|
||
if (targetdebug < 2 && i > 0)
|
||
{
|
||
fprintf_unfiltered (gdb_stdlog, " ...");
|
||
break;
|
||
}
|
||
fprintf_unfiltered (gdb_stdlog, "\n");
|
||
}
|
||
|
||
fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
|
||
}
|
||
}
|
||
|
||
fputc_unfiltered ('\n', gdb_stdlog);
|
||
}
|
||
return retval;
|
||
}
|
||
|
||
/* Read LEN bytes of target memory at address MEMADDR, placing the results in
|
||
GDB's memory at MYADDR. Returns either 0 for success or an errno value
|
||
if any error occurs.
|
||
|
||
If an error occurs, no guarantee is made about the contents of the data at
|
||
MYADDR. In particular, the caller should not depend upon partial reads
|
||
filling the buffer with good data. There is no way for the caller to know
|
||
how much good data might have been transfered anyway. Callers that can
|
||
deal with partial reads should call target_read (which will retry until
|
||
it makes no progress, and then return how much was transferred). */
|
||
|
||
int
|
||
target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len)
|
||
{
|
||
/* Dispatch to the topmost target, not the flattened current_target.
|
||
Memory accesses check target->to_has_(all_)memory, and the
|
||
flattened target doesn't inherit those. */
|
||
if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
|
||
myaddr, memaddr, len) == len)
|
||
return 0;
|
||
else
|
||
return EIO;
|
||
}
|
||
|
||
/* Like target_read_memory, but specify explicitly that this is a read from
|
||
the target's stack. This may trigger different cache behavior. */
|
||
|
||
int
|
||
target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len)
|
||
{
|
||
/* Dispatch to the topmost target, not the flattened current_target.
|
||
Memory accesses check target->to_has_(all_)memory, and the
|
||
flattened target doesn't inherit those. */
|
||
|
||
if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL,
|
||
myaddr, memaddr, len) == len)
|
||
return 0;
|
||
else
|
||
return EIO;
|
||
}
|
||
|
||
/* Write LEN bytes from MYADDR to target memory at address MEMADDR.
|
||
Returns either 0 for success or an errno value if any error occurs.
|
||
If an error occurs, no guarantee is made about how much data got written.
|
||
Callers that can deal with partial writes should call target_write. */
|
||
|
||
int
|
||
target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len)
|
||
{
|
||
/* Dispatch to the topmost target, not the flattened current_target.
|
||
Memory accesses check target->to_has_(all_)memory, and the
|
||
flattened target doesn't inherit those. */
|
||
if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL,
|
||
myaddr, memaddr, len) == len)
|
||
return 0;
|
||
else
|
||
return EIO;
|
||
}
|
||
|
||
/* Fetch the target's memory map. */
|
||
|
||
VEC(mem_region_s) *
|
||
target_memory_map (void)
|
||
{
|
||
VEC(mem_region_s) *result;
|
||
struct mem_region *last_one, *this_one;
|
||
int ix;
|
||
struct target_ops *t;
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n");
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_memory_map != NULL)
|
||
break;
|
||
|
||
if (t == NULL)
|
||
return NULL;
|
||
|
||
result = t->to_memory_map (t);
|
||
if (result == NULL)
|
||
return NULL;
|
||
|
||
qsort (VEC_address (mem_region_s, result),
|
||
VEC_length (mem_region_s, result),
|
||
sizeof (struct mem_region), mem_region_cmp);
|
||
|
||
/* Check that regions do not overlap. Simultaneously assign
|
||
a numbering for the "mem" commands to use to refer to
|
||
each region. */
|
||
last_one = NULL;
|
||
for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++)
|
||
{
|
||
this_one->number = ix;
|
||
|
||
if (last_one && last_one->hi > this_one->lo)
|
||
{
|
||
warning (_("Overlapping regions in memory map: ignoring"));
|
||
VEC_free (mem_region_s, result);
|
||
return NULL;
|
||
}
|
||
last_one = this_one;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
void
|
||
target_flash_erase (ULONGEST address, LONGEST length)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_flash_erase != NULL)
|
||
{
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n",
|
||
hex_string (address), phex (length, 0));
|
||
t->to_flash_erase (t, address, length);
|
||
return;
|
||
}
|
||
|
||
tcomplain ();
|
||
}
|
||
|
||
void
|
||
target_flash_done (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_flash_done != NULL)
|
||
{
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
|
||
t->to_flash_done (t);
|
||
return;
|
||
}
|
||
|
||
tcomplain ();
|
||
}
|
||
|
||
static void
|
||
show_trust_readonly (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("\
|
||
Mode for reading from readonly sections is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* More generic transfers. */
|
||
|
||
static LONGEST
|
||
default_xfer_partial (struct target_ops *ops, enum target_object object,
|
||
const char *annex, gdb_byte *readbuf,
|
||
const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
|
||
{
|
||
if (object == TARGET_OBJECT_MEMORY
|
||
&& ops->deprecated_xfer_memory != NULL)
|
||
/* If available, fall back to the target's
|
||
"deprecated_xfer_memory" method. */
|
||
{
|
||
int xfered = -1;
|
||
|
||
errno = 0;
|
||
if (writebuf != NULL)
|
||
{
|
||
void *buffer = xmalloc (len);
|
||
struct cleanup *cleanup = make_cleanup (xfree, buffer);
|
||
|
||
memcpy (buffer, writebuf, len);
|
||
xfered = ops->deprecated_xfer_memory (offset, buffer, len,
|
||
1/*write*/, NULL, ops);
|
||
do_cleanups (cleanup);
|
||
}
|
||
if (readbuf != NULL)
|
||
xfered = ops->deprecated_xfer_memory (offset, readbuf, len,
|
||
0/*read*/, NULL, ops);
|
||
if (xfered > 0)
|
||
return xfered;
|
||
else if (xfered == 0 && errno == 0)
|
||
/* "deprecated_xfer_memory" uses 0, cross checked against
|
||
ERRNO as one indication of an error. */
|
||
return 0;
|
||
else
|
||
return -1;
|
||
}
|
||
else if (ops->beneath != NULL)
|
||
return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
|
||
readbuf, writebuf, offset, len);
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
/* The xfer_partial handler for the topmost target. Unlike the default,
|
||
it does not need to handle memory specially; it just passes all
|
||
requests down the stack. */
|
||
|
||
static LONGEST
|
||
current_xfer_partial (struct target_ops *ops, enum target_object object,
|
||
const char *annex, gdb_byte *readbuf,
|
||
const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
|
||
{
|
||
if (ops->beneath != NULL)
|
||
return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
|
||
readbuf, writebuf, offset, len);
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
/* Target vector read/write partial wrapper functions. */
|
||
|
||
static LONGEST
|
||
target_read_partial (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, gdb_byte *buf,
|
||
ULONGEST offset, LONGEST len)
|
||
{
|
||
return target_xfer_partial (ops, object, annex, buf, NULL, offset, len);
|
||
}
|
||
|
||
static LONGEST
|
||
target_write_partial (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, const gdb_byte *buf,
|
||
ULONGEST offset, LONGEST len)
|
||
{
|
||
return target_xfer_partial (ops, object, annex, NULL, buf, offset, len);
|
||
}
|
||
|
||
/* Wrappers to perform the full transfer. */
|
||
|
||
/* For docs on target_read see target.h. */
|
||
|
||
LONGEST
|
||
target_read (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, gdb_byte *buf,
|
||
ULONGEST offset, LONGEST len)
|
||
{
|
||
LONGEST xfered = 0;
|
||
|
||
while (xfered < len)
|
||
{
|
||
LONGEST xfer = target_read_partial (ops, object, annex,
|
||
(gdb_byte *) buf + xfered,
|
||
offset + xfered, len - xfered);
|
||
|
||
/* Call an observer, notifying them of the xfer progress? */
|
||
if (xfer == 0)
|
||
return xfered;
|
||
if (xfer < 0)
|
||
return -1;
|
||
xfered += xfer;
|
||
QUIT;
|
||
}
|
||
return len;
|
||
}
|
||
|
||
/** Assuming that the entire [begin, end) range of memory cannot be read,
|
||
try to read whatever subrange is possible to read.
|
||
|
||
The function results, in RESULT, either zero or one memory block.
|
||
If there's a readable subrange at the beginning, it is completely
|
||
read and returned. Any further readable subrange will not be read.
|
||
Otherwise, if there's a readable subrange at the end, it will be
|
||
completely read and returned. Any readable subranges before it (obviously,
|
||
not starting at the beginning), will be ignored. In other cases --
|
||
either no readable subrange, or readable subrange (s) that is neither
|
||
at the beginning, or end, nothing is returned.
|
||
|
||
The purpose of this function is to handle a read across a boundary of
|
||
accessible memory in a case when memory map is not available. The above
|
||
restrictions are fine for this case, but will give incorrect results if
|
||
the memory is 'patchy'. However, supporting 'patchy' memory would require
|
||
trying to read every single byte, and it seems unacceptable solution.
|
||
Explicit memory map is recommended for this case -- and
|
||
target_read_memory_robust will take care of reading multiple ranges then. */
|
||
|
||
static void
|
||
read_whatever_is_readable (struct target_ops *ops, ULONGEST begin, ULONGEST end,
|
||
VEC(memory_read_result_s) **result)
|
||
{
|
||
gdb_byte *buf = xmalloc (end-begin);
|
||
ULONGEST current_begin = begin;
|
||
ULONGEST current_end = end;
|
||
int forward;
|
||
memory_read_result_s r;
|
||
|
||
/* If we previously failed to read 1 byte, nothing can be done here. */
|
||
if (end - begin <= 1)
|
||
return;
|
||
|
||
/* Check that either first or the last byte is readable, and give up
|
||
if not. This heuristic is meant to permit reading accessible memory
|
||
at the boundary of accessible region. */
|
||
if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
buf, begin, 1) == 1)
|
||
{
|
||
forward = 1;
|
||
++current_begin;
|
||
}
|
||
else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
buf + (end-begin) - 1, end - 1, 1) == 1)
|
||
{
|
||
forward = 0;
|
||
--current_end;
|
||
}
|
||
else
|
||
{
|
||
return;
|
||
}
|
||
|
||
/* Loop invariant is that the [current_begin, current_end) was previously
|
||
found to be not readable as a whole.
|
||
|
||
Note loop condition -- if the range has 1 byte, we can't divide the range
|
||
so there's no point trying further. */
|
||
while (current_end - current_begin > 1)
|
||
{
|
||
ULONGEST first_half_begin, first_half_end;
|
||
ULONGEST second_half_begin, second_half_end;
|
||
LONGEST xfer;
|
||
|
||
ULONGEST middle = current_begin + (current_end - current_begin)/2;
|
||
if (forward)
|
||
{
|
||
first_half_begin = current_begin;
|
||
first_half_end = middle;
|
||
second_half_begin = middle;
|
||
second_half_end = current_end;
|
||
}
|
||
else
|
||
{
|
||
first_half_begin = middle;
|
||
first_half_end = current_end;
|
||
second_half_begin = current_begin;
|
||
second_half_end = middle;
|
||
}
|
||
|
||
xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
buf + (first_half_begin - begin),
|
||
first_half_begin,
|
||
first_half_end - first_half_begin);
|
||
|
||
if (xfer == first_half_end - first_half_begin)
|
||
{
|
||
/* This half reads up fine. So, the error must be in the other half. */
|
||
current_begin = second_half_begin;
|
||
current_end = second_half_end;
|
||
}
|
||
else
|
||
{
|
||
/* This half is not readable. Because we've tried one byte, we
|
||
know some part of this half if actually redable. Go to the next
|
||
iteration to divide again and try to read.
|
||
|
||
We don't handle the other half, because this function only tries
|
||
to read a single readable subrange. */
|
||
current_begin = first_half_begin;
|
||
current_end = first_half_end;
|
||
}
|
||
}
|
||
|
||
if (forward)
|
||
{
|
||
/* The [begin, current_begin) range has been read. */
|
||
r.begin = begin;
|
||
r.end = current_begin;
|
||
r.data = buf;
|
||
}
|
||
else
|
||
{
|
||
/* The [current_end, end) range has been read. */
|
||
LONGEST rlen = end - current_end;
|
||
r.data = xmalloc (rlen);
|
||
memcpy (r.data, buf + current_end - begin, rlen);
|
||
r.begin = current_end;
|
||
r.end = end;
|
||
xfree (buf);
|
||
}
|
||
VEC_safe_push(memory_read_result_s, (*result), &r);
|
||
}
|
||
|
||
void
|
||
free_memory_read_result_vector (void *x)
|
||
{
|
||
VEC(memory_read_result_s) *v = x;
|
||
memory_read_result_s *current;
|
||
int ix;
|
||
|
||
for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix)
|
||
{
|
||
xfree (current->data);
|
||
}
|
||
VEC_free (memory_read_result_s, v);
|
||
}
|
||
|
||
VEC(memory_read_result_s) *
|
||
read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len)
|
||
{
|
||
VEC(memory_read_result_s) *result = 0;
|
||
|
||
LONGEST xfered = 0;
|
||
while (xfered < len)
|
||
{
|
||
struct mem_region *region = lookup_mem_region (offset + xfered);
|
||
LONGEST rlen;
|
||
|
||
/* If there is no explicit region, a fake one should be created. */
|
||
gdb_assert (region);
|
||
|
||
if (region->hi == 0)
|
||
rlen = len - xfered;
|
||
else
|
||
rlen = region->hi - offset;
|
||
|
||
if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO)
|
||
{
|
||
/* Cannot read this region. Note that we can end up here only
|
||
if the region is explicitly marked inaccessible, or
|
||
'inaccessible-by-default' is in effect. */
|
||
xfered += rlen;
|
||
}
|
||
else
|
||
{
|
||
LONGEST to_read = min (len - xfered, rlen);
|
||
gdb_byte *buffer = (gdb_byte *)xmalloc (to_read);
|
||
|
||
LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
(gdb_byte *) buffer,
|
||
offset + xfered, to_read);
|
||
/* Call an observer, notifying them of the xfer progress? */
|
||
if (xfer <= 0)
|
||
{
|
||
/* Got an error reading full chunk. See if maybe we can read
|
||
some subrange. */
|
||
xfree (buffer);
|
||
read_whatever_is_readable (ops, offset + xfered, offset + xfered + to_read, &result);
|
||
xfered += to_read;
|
||
}
|
||
else
|
||
{
|
||
struct memory_read_result r;
|
||
r.data = buffer;
|
||
r.begin = offset + xfered;
|
||
r.end = r.begin + xfer;
|
||
VEC_safe_push (memory_read_result_s, result, &r);
|
||
xfered += xfer;
|
||
}
|
||
QUIT;
|
||
}
|
||
}
|
||
return result;
|
||
}
|
||
|
||
|
||
/* An alternative to target_write with progress callbacks. */
|
||
|
||
LONGEST
|
||
target_write_with_progress (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, const gdb_byte *buf,
|
||
ULONGEST offset, LONGEST len,
|
||
void (*progress) (ULONGEST, void *), void *baton)
|
||
{
|
||
LONGEST xfered = 0;
|
||
|
||
/* Give the progress callback a chance to set up. */
|
||
if (progress)
|
||
(*progress) (0, baton);
|
||
|
||
while (xfered < len)
|
||
{
|
||
LONGEST xfer = target_write_partial (ops, object, annex,
|
||
(gdb_byte *) buf + xfered,
|
||
offset + xfered, len - xfered);
|
||
|
||
if (xfer == 0)
|
||
return xfered;
|
||
if (xfer < 0)
|
||
return -1;
|
||
|
||
if (progress)
|
||
(*progress) (xfer, baton);
|
||
|
||
xfered += xfer;
|
||
QUIT;
|
||
}
|
||
return len;
|
||
}
|
||
|
||
/* For docs on target_write see target.h. */
|
||
|
||
LONGEST
|
||
target_write (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, const gdb_byte *buf,
|
||
ULONGEST offset, LONGEST len)
|
||
{
|
||
return target_write_with_progress (ops, object, annex, buf, offset, len,
|
||
NULL, NULL);
|
||
}
|
||
|
||
/* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
|
||
the size of the transferred data. PADDING additional bytes are
|
||
available in *BUF_P. This is a helper function for
|
||
target_read_alloc; see the declaration of that function for more
|
||
information. */
|
||
|
||
static LONGEST
|
||
target_read_alloc_1 (struct target_ops *ops, enum target_object object,
|
||
const char *annex, gdb_byte **buf_p, int padding)
|
||
{
|
||
size_t buf_alloc, buf_pos;
|
||
gdb_byte *buf;
|
||
LONGEST n;
|
||
|
||
/* This function does not have a length parameter; it reads the
|
||
entire OBJECT). Also, it doesn't support objects fetched partly
|
||
from one target and partly from another (in a different stratum,
|
||
e.g. a core file and an executable). Both reasons make it
|
||
unsuitable for reading memory. */
|
||
gdb_assert (object != TARGET_OBJECT_MEMORY);
|
||
|
||
/* Start by reading up to 4K at a time. The target will throttle
|
||
this number down if necessary. */
|
||
buf_alloc = 4096;
|
||
buf = xmalloc (buf_alloc);
|
||
buf_pos = 0;
|
||
while (1)
|
||
{
|
||
n = target_read_partial (ops, object, annex, &buf[buf_pos],
|
||
buf_pos, buf_alloc - buf_pos - padding);
|
||
if (n < 0)
|
||
{
|
||
/* An error occurred. */
|
||
xfree (buf);
|
||
return -1;
|
||
}
|
||
else if (n == 0)
|
||
{
|
||
/* Read all there was. */
|
||
if (buf_pos == 0)
|
||
xfree (buf);
|
||
else
|
||
*buf_p = buf;
|
||
return buf_pos;
|
||
}
|
||
|
||
buf_pos += n;
|
||
|
||
/* If the buffer is filling up, expand it. */
|
||
if (buf_alloc < buf_pos * 2)
|
||
{
|
||
buf_alloc *= 2;
|
||
buf = xrealloc (buf, buf_alloc);
|
||
}
|
||
|
||
QUIT;
|
||
}
|
||
}
|
||
|
||
/* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
|
||
the size of the transferred data. See the declaration in "target.h"
|
||
function for more information about the return value. */
|
||
|
||
LONGEST
|
||
target_read_alloc (struct target_ops *ops, enum target_object object,
|
||
const char *annex, gdb_byte **buf_p)
|
||
{
|
||
return target_read_alloc_1 (ops, object, annex, buf_p, 0);
|
||
}
|
||
|
||
/* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
|
||
returned as a string, allocated using xmalloc. If an error occurs
|
||
or the transfer is unsupported, NULL is returned. Empty objects
|
||
are returned as allocated but empty strings. A warning is issued
|
||
if the result contains any embedded NUL bytes. */
|
||
|
||
char *
|
||
target_read_stralloc (struct target_ops *ops, enum target_object object,
|
||
const char *annex)
|
||
{
|
||
gdb_byte *buffer;
|
||
LONGEST transferred;
|
||
|
||
transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1);
|
||
|
||
if (transferred < 0)
|
||
return NULL;
|
||
|
||
if (transferred == 0)
|
||
return xstrdup ("");
|
||
|
||
buffer[transferred] = 0;
|
||
if (strlen (buffer) < transferred)
|
||
warning (_("target object %d, annex %s, "
|
||
"contained unexpected null characters"),
|
||
(int) object, annex ? annex : "(none)");
|
||
|
||
return (char *) buffer;
|
||
}
|
||
|
||
/* Memory transfer methods. */
|
||
|
||
void
|
||
get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
|
||
LONGEST len)
|
||
{
|
||
/* This method is used to read from an alternate, non-current
|
||
target. This read must bypass the overlay support (as symbols
|
||
don't match this target), and GDB's internal cache (wrong cache
|
||
for this target). */
|
||
if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len)
|
||
!= len)
|
||
memory_error (EIO, addr);
|
||
}
|
||
|
||
ULONGEST
|
||
get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr,
|
||
int len, enum bfd_endian byte_order)
|
||
{
|
||
gdb_byte buf[sizeof (ULONGEST)];
|
||
|
||
gdb_assert (len <= sizeof (buf));
|
||
get_target_memory (ops, addr, buf, len);
|
||
return extract_unsigned_integer (buf, len, byte_order);
|
||
}
|
||
|
||
int
|
||
target_insert_breakpoint (struct gdbarch *gdbarch,
|
||
struct bp_target_info *bp_tgt)
|
||
{
|
||
if (!may_insert_breakpoints)
|
||
{
|
||
warning (_("May not insert breakpoints"));
|
||
return 1;
|
||
}
|
||
|
||
return (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt);
|
||
}
|
||
|
||
int
|
||
target_remove_breakpoint (struct gdbarch *gdbarch,
|
||
struct bp_target_info *bp_tgt)
|
||
{
|
||
/* This is kind of a weird case to handle, but the permission might
|
||
have been changed after breakpoints were inserted - in which case
|
||
we should just take the user literally and assume that any
|
||
breakpoints should be left in place. */
|
||
if (!may_insert_breakpoints)
|
||
{
|
||
warning (_("May not remove breakpoints"));
|
||
return 1;
|
||
}
|
||
|
||
return (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt);
|
||
}
|
||
|
||
static void
|
||
target_info (char *args, int from_tty)
|
||
{
|
||
struct target_ops *t;
|
||
int has_all_mem = 0;
|
||
|
||
if (symfile_objfile != NULL)
|
||
printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name);
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
{
|
||
if (!(*t->to_has_memory) (t))
|
||
continue;
|
||
|
||
if ((int) (t->to_stratum) <= (int) dummy_stratum)
|
||
continue;
|
||
if (has_all_mem)
|
||
printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n"));
|
||
printf_unfiltered ("%s:\n", t->to_longname);
|
||
(t->to_files_info) (t);
|
||
has_all_mem = (*t->to_has_all_memory) (t);
|
||
}
|
||
}
|
||
|
||
/* This function is called before any new inferior is created, e.g.
|
||
by running a program, attaching, or connecting to a target.
|
||
It cleans up any state from previous invocations which might
|
||
change between runs. This is a subset of what target_preopen
|
||
resets (things which might change between targets). */
|
||
|
||
void
|
||
target_pre_inferior (int from_tty)
|
||
{
|
||
/* Clear out solib state. Otherwise the solib state of the previous
|
||
inferior might have survived and is entirely wrong for the new
|
||
target. This has been observed on GNU/Linux using glibc 2.3. How
|
||
to reproduce:
|
||
|
||
bash$ ./foo&
|
||
[1] 4711
|
||
bash$ ./foo&
|
||
[1] 4712
|
||
bash$ gdb ./foo
|
||
[...]
|
||
(gdb) attach 4711
|
||
(gdb) detach
|
||
(gdb) attach 4712
|
||
Cannot access memory at address 0xdeadbeef
|
||
*/
|
||
|
||
/* In some OSs, the shared library list is the same/global/shared
|
||
across inferiors. If code is shared between processes, so are
|
||
memory regions and features. */
|
||
if (!gdbarch_has_global_solist (target_gdbarch))
|
||
{
|
||
no_shared_libraries (NULL, from_tty);
|
||
|
||
invalidate_target_mem_regions ();
|
||
|
||
target_clear_description ();
|
||
}
|
||
}
|
||
|
||
/* Callback for iterate_over_inferiors. Gets rid of the given
|
||
inferior. */
|
||
|
||
static int
|
||
dispose_inferior (struct inferior *inf, void *args)
|
||
{
|
||
struct thread_info *thread;
|
||
|
||
thread = any_thread_of_process (inf->pid);
|
||
if (thread)
|
||
{
|
||
switch_to_thread (thread->ptid);
|
||
|
||
/* Core inferiors actually should be detached, not killed. */
|
||
if (target_has_execution)
|
||
target_kill ();
|
||
else
|
||
target_detach (NULL, 0);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* This is to be called by the open routine before it does
|
||
anything. */
|
||
|
||
void
|
||
target_preopen (int from_tty)
|
||
{
|
||
dont_repeat ();
|
||
|
||
if (have_inferiors ())
|
||
{
|
||
if (!from_tty
|
||
|| !have_live_inferiors ()
|
||
|| query (_("A program is being debugged already. Kill it? ")))
|
||
iterate_over_inferiors (dispose_inferior, NULL);
|
||
else
|
||
error (_("Program not killed."));
|
||
}
|
||
|
||
/* Calling target_kill may remove the target from the stack. But if
|
||
it doesn't (which seems like a win for UDI), remove it now. */
|
||
/* Leave the exec target, though. The user may be switching from a
|
||
live process to a core of the same program. */
|
||
pop_all_targets_above (file_stratum, 0);
|
||
|
||
target_pre_inferior (from_tty);
|
||
}
|
||
|
||
/* Detach a target after doing deferred register stores. */
|
||
|
||
void
|
||
target_detach (char *args, int from_tty)
|
||
{
|
||
struct target_ops* t;
|
||
|
||
if (gdbarch_has_global_breakpoints (target_gdbarch))
|
||
/* Don't remove global breakpoints here. They're removed on
|
||
disconnection from the target. */
|
||
;
|
||
else
|
||
/* If we're in breakpoints-always-inserted mode, have to remove
|
||
them before detaching. */
|
||
remove_breakpoints_pid (PIDGET (inferior_ptid));
|
||
|
||
prepare_for_detach ();
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_detach != NULL)
|
||
{
|
||
t->to_detach (t, args, from_tty);
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n",
|
||
args, from_tty);
|
||
return;
|
||
}
|
||
}
|
||
|
||
internal_error (__FILE__, __LINE__, "could not find a target to detach");
|
||
}
|
||
|
||
void
|
||
target_disconnect (char *args, int from_tty)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* If we're in breakpoints-always-inserted mode or if breakpoints
|
||
are global across processes, we have to remove them before
|
||
disconnecting. */
|
||
remove_breakpoints ();
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_disconnect != NULL)
|
||
{
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
|
||
args, from_tty);
|
||
t->to_disconnect (t, args, from_tty);
|
||
return;
|
||
}
|
||
|
||
tcomplain ();
|
||
}
|
||
|
||
ptid_t
|
||
target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_wait != NULL)
|
||
{
|
||
ptid_t retval = (*t->to_wait) (t, ptid, status, options);
|
||
|
||
if (targetdebug)
|
||
{
|
||
char *status_string;
|
||
|
||
status_string = target_waitstatus_to_string (status);
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_wait (%d, status) = %d, %s\n",
|
||
PIDGET (ptid), PIDGET (retval),
|
||
status_string);
|
||
xfree (status_string);
|
||
}
|
||
|
||
return retval;
|
||
}
|
||
}
|
||
|
||
noprocess ();
|
||
}
|
||
|
||
char *
|
||
target_pid_to_str (ptid_t ptid)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_pid_to_str != NULL)
|
||
return (*t->to_pid_to_str) (t, ptid);
|
||
}
|
||
|
||
return normal_pid_to_str (ptid);
|
||
}
|
||
|
||
void
|
||
target_resume (ptid_t ptid, int step, enum target_signal signal)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
target_dcache_invalidate ();
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_resume != NULL)
|
||
{
|
||
t->to_resume (t, ptid, step, signal);
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n",
|
||
PIDGET (ptid),
|
||
step ? "step" : "continue",
|
||
target_signal_to_name (signal));
|
||
|
||
registers_changed_ptid (ptid);
|
||
set_executing (ptid, 1);
|
||
set_running (ptid, 1);
|
||
clear_inline_frame_state (ptid);
|
||
return;
|
||
}
|
||
}
|
||
|
||
noprocess ();
|
||
}
|
||
/* Look through the list of possible targets for a target that can
|
||
follow forks. */
|
||
|
||
int
|
||
target_follow_fork (int follow_child)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_follow_fork != NULL)
|
||
{
|
||
int retval = t->to_follow_fork (t, follow_child);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n",
|
||
follow_child, retval);
|
||
return retval;
|
||
}
|
||
}
|
||
|
||
/* Some target returned a fork event, but did not know how to follow it. */
|
||
internal_error (__FILE__, __LINE__,
|
||
"could not find a target to follow fork");
|
||
}
|
||
|
||
void
|
||
target_mourn_inferior (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_mourn_inferior != NULL)
|
||
{
|
||
t->to_mourn_inferior (t);
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
|
||
|
||
/* We no longer need to keep handles on any of the object files.
|
||
Make sure to release them to avoid unnecessarily locking any
|
||
of them while we're not actually debugging. */
|
||
bfd_cache_close_all ();
|
||
|
||
return;
|
||
}
|
||
}
|
||
|
||
internal_error (__FILE__, __LINE__,
|
||
"could not find a target to follow mourn inferior");
|
||
}
|
||
|
||
/* Look for a target which can describe architectural features, starting
|
||
from TARGET. If we find one, return its description. */
|
||
|
||
const struct target_desc *
|
||
target_read_description (struct target_ops *target)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target; t != NULL; t = t->beneath)
|
||
if (t->to_read_description != NULL)
|
||
{
|
||
const struct target_desc *tdesc;
|
||
|
||
tdesc = t->to_read_description (t);
|
||
if (tdesc)
|
||
return tdesc;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* The default implementation of to_search_memory.
|
||
This implements a basic search of memory, reading target memory and
|
||
performing the search here (as opposed to performing the search in on the
|
||
target side with, for example, gdbserver). */
|
||
|
||
int
|
||
simple_search_memory (struct target_ops *ops,
|
||
CORE_ADDR start_addr, ULONGEST search_space_len,
|
||
const gdb_byte *pattern, ULONGEST pattern_len,
|
||
CORE_ADDR *found_addrp)
|
||
{
|
||
/* NOTE: also defined in find.c testcase. */
|
||
#define SEARCH_CHUNK_SIZE 16000
|
||
const unsigned chunk_size = SEARCH_CHUNK_SIZE;
|
||
/* Buffer to hold memory contents for searching. */
|
||
gdb_byte *search_buf;
|
||
unsigned search_buf_size;
|
||
struct cleanup *old_cleanups;
|
||
|
||
search_buf_size = chunk_size + pattern_len - 1;
|
||
|
||
/* No point in trying to allocate a buffer larger than the search space. */
|
||
if (search_space_len < search_buf_size)
|
||
search_buf_size = search_space_len;
|
||
|
||
search_buf = malloc (search_buf_size);
|
||
if (search_buf == NULL)
|
||
error (_("Unable to allocate memory to perform the search."));
|
||
old_cleanups = make_cleanup (free_current_contents, &search_buf);
|
||
|
||
/* Prime the search buffer. */
|
||
|
||
if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
search_buf, start_addr, search_buf_size) != search_buf_size)
|
||
{
|
||
warning (_("Unable to access target memory at %s, halting search."),
|
||
hex_string (start_addr));
|
||
do_cleanups (old_cleanups);
|
||
return -1;
|
||
}
|
||
|
||
/* Perform the search.
|
||
|
||
The loop is kept simple by allocating [N + pattern-length - 1] bytes.
|
||
When we've scanned N bytes we copy the trailing bytes to the start and
|
||
read in another N bytes. */
|
||
|
||
while (search_space_len >= pattern_len)
|
||
{
|
||
gdb_byte *found_ptr;
|
||
unsigned nr_search_bytes = min (search_space_len, search_buf_size);
|
||
|
||
found_ptr = memmem (search_buf, nr_search_bytes,
|
||
pattern, pattern_len);
|
||
|
||
if (found_ptr != NULL)
|
||
{
|
||
CORE_ADDR found_addr = start_addr + (found_ptr - search_buf);
|
||
|
||
*found_addrp = found_addr;
|
||
do_cleanups (old_cleanups);
|
||
return 1;
|
||
}
|
||
|
||
/* Not found in this chunk, skip to next chunk. */
|
||
|
||
/* Don't let search_space_len wrap here, it's unsigned. */
|
||
if (search_space_len >= chunk_size)
|
||
search_space_len -= chunk_size;
|
||
else
|
||
search_space_len = 0;
|
||
|
||
if (search_space_len >= pattern_len)
|
||
{
|
||
unsigned keep_len = search_buf_size - chunk_size;
|
||
CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
|
||
int nr_to_read;
|
||
|
||
/* Copy the trailing part of the previous iteration to the front
|
||
of the buffer for the next iteration. */
|
||
gdb_assert (keep_len == pattern_len - 1);
|
||
memcpy (search_buf, search_buf + chunk_size, keep_len);
|
||
|
||
nr_to_read = min (search_space_len - keep_len, chunk_size);
|
||
|
||
if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
search_buf + keep_len, read_addr,
|
||
nr_to_read) != nr_to_read)
|
||
{
|
||
warning (_("Unable to access target memory at %s, halting search."),
|
||
hex_string (read_addr));
|
||
do_cleanups (old_cleanups);
|
||
return -1;
|
||
}
|
||
|
||
start_addr += chunk_size;
|
||
}
|
||
}
|
||
|
||
/* Not found. */
|
||
|
||
do_cleanups (old_cleanups);
|
||
return 0;
|
||
}
|
||
|
||
/* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
|
||
sequence of bytes in PATTERN with length PATTERN_LEN.
|
||
|
||
The result is 1 if found, 0 if not found, and -1 if there was an error
|
||
requiring halting of the search (e.g. memory read error).
|
||
If the pattern is found the address is recorded in FOUND_ADDRP. */
|
||
|
||
int
|
||
target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
|
||
const gdb_byte *pattern, ULONGEST pattern_len,
|
||
CORE_ADDR *found_addrp)
|
||
{
|
||
struct target_ops *t;
|
||
int found;
|
||
|
||
/* We don't use INHERIT to set current_target.to_search_memory,
|
||
so we have to scan the target stack and handle targetdebug
|
||
ourselves. */
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n",
|
||
hex_string (start_addr));
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
if (t->to_search_memory != NULL)
|
||
break;
|
||
|
||
if (t != NULL)
|
||
{
|
||
found = t->to_search_memory (t, start_addr, search_space_len,
|
||
pattern, pattern_len, found_addrp);
|
||
}
|
||
else
|
||
{
|
||
/* If a special version of to_search_memory isn't available, use the
|
||
simple version. */
|
||
found = simple_search_memory (current_target.beneath,
|
||
start_addr, search_space_len,
|
||
pattern, pattern_len, found_addrp);
|
||
}
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, " = %d\n", found);
|
||
|
||
return found;
|
||
}
|
||
|
||
/* Look through the currently pushed targets. If none of them will
|
||
be able to restart the currently running process, issue an error
|
||
message. */
|
||
|
||
void
|
||
target_require_runnable (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
{
|
||
/* If this target knows how to create a new program, then
|
||
assume we will still be able to after killing the current
|
||
one. Either killing and mourning will not pop T, or else
|
||
find_default_run_target will find it again. */
|
||
if (t->to_create_inferior != NULL)
|
||
return;
|
||
|
||
/* Do not worry about thread_stratum targets that can not
|
||
create inferiors. Assume they will be pushed again if
|
||
necessary, and continue to the process_stratum. */
|
||
if (t->to_stratum == thread_stratum
|
||
|| t->to_stratum == arch_stratum)
|
||
continue;
|
||
|
||
error (_("\
|
||
The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."),
|
||
t->to_shortname);
|
||
}
|
||
|
||
/* This function is only called if the target is running. In that
|
||
case there should have been a process_stratum target and it
|
||
should either know how to create inferiors, or not... */
|
||
internal_error (__FILE__, __LINE__, "No targets found");
|
||
}
|
||
|
||
/* Look through the list of possible targets for a target that can
|
||
execute a run or attach command without any other data. This is
|
||
used to locate the default process stratum.
|
||
|
||
If DO_MESG is not NULL, the result is always valid (error() is
|
||
called for errors); else, return NULL on error. */
|
||
|
||
static struct target_ops *
|
||
find_default_run_target (char *do_mesg)
|
||
{
|
||
struct target_ops **t;
|
||
struct target_ops *runable = NULL;
|
||
int count;
|
||
|
||
count = 0;
|
||
|
||
for (t = target_structs; t < target_structs + target_struct_size;
|
||
++t)
|
||
{
|
||
if ((*t)->to_can_run && target_can_run (*t))
|
||
{
|
||
runable = *t;
|
||
++count;
|
||
}
|
||
}
|
||
|
||
if (count != 1)
|
||
{
|
||
if (do_mesg)
|
||
error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
|
||
else
|
||
return NULL;
|
||
}
|
||
|
||
return runable;
|
||
}
|
||
|
||
void
|
||
find_default_attach (struct target_ops *ops, char *args, int from_tty)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
t = find_default_run_target ("attach");
|
||
(t->to_attach) (t, args, from_tty);
|
||
return;
|
||
}
|
||
|
||
void
|
||
find_default_create_inferior (struct target_ops *ops,
|
||
char *exec_file, char *allargs, char **env,
|
||
int from_tty)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
t = find_default_run_target ("run");
|
||
(t->to_create_inferior) (t, exec_file, allargs, env, from_tty);
|
||
return;
|
||
}
|
||
|
||
static int
|
||
find_default_can_async_p (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* This may be called before the target is pushed on the stack;
|
||
look for the default process stratum. If there's none, gdb isn't
|
||
configured with a native debugger, and target remote isn't
|
||
connected yet. */
|
||
t = find_default_run_target (NULL);
|
||
if (t && t->to_can_async_p)
|
||
return (t->to_can_async_p) ();
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
find_default_is_async_p (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* This may be called before the target is pushed on the stack;
|
||
look for the default process stratum. If there's none, gdb isn't
|
||
configured with a native debugger, and target remote isn't
|
||
connected yet. */
|
||
t = find_default_run_target (NULL);
|
||
if (t && t->to_is_async_p)
|
||
return (t->to_is_async_p) ();
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
find_default_supports_non_stop (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
t = find_default_run_target (NULL);
|
||
if (t && t->to_supports_non_stop)
|
||
return (t->to_supports_non_stop) ();
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_supports_non_stop (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = ¤t_target; t != NULL; t = t->beneath)
|
||
if (t->to_supports_non_stop)
|
||
return t->to_supports_non_stop ();
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
char *
|
||
target_get_osdata (const char *type)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* If we're already connected to something that can get us OS
|
||
related data, use it. Otherwise, try using the native
|
||
target. */
|
||
if (current_target.to_stratum >= process_stratum)
|
||
t = current_target.beneath;
|
||
else
|
||
t = find_default_run_target ("get OS data");
|
||
|
||
if (!t)
|
||
return NULL;
|
||
|
||
return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type);
|
||
}
|
||
|
||
/* Determine the current address space of thread PTID. */
|
||
|
||
struct address_space *
|
||
target_thread_address_space (ptid_t ptid)
|
||
{
|
||
struct address_space *aspace;
|
||
struct inferior *inf;
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_thread_address_space != NULL)
|
||
{
|
||
aspace = t->to_thread_address_space (t, ptid);
|
||
gdb_assert (aspace);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_thread_address_space (%s) = %d\n",
|
||
target_pid_to_str (ptid),
|
||
address_space_num (aspace));
|
||
return aspace;
|
||
}
|
||
}
|
||
|
||
/* Fall-back to the "main" address space of the inferior. */
|
||
inf = find_inferior_pid (ptid_get_pid (ptid));
|
||
|
||
if (inf == NULL || inf->aspace == NULL)
|
||
internal_error (__FILE__, __LINE__, "\
|
||
Can't determine the current address space of thread %s\n",
|
||
target_pid_to_str (ptid));
|
||
|
||
return inf->aspace;
|
||
}
|
||
|
||
static int
|
||
default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
|
||
{
|
||
return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT);
|
||
}
|
||
|
||
static int
|
||
default_watchpoint_addr_within_range (struct target_ops *target,
|
||
CORE_ADDR addr,
|
||
CORE_ADDR start, int length)
|
||
{
|
||
return addr >= start && addr < start + length;
|
||
}
|
||
|
||
static struct gdbarch *
|
||
default_thread_architecture (struct target_ops *ops, ptid_t ptid)
|
||
{
|
||
return target_gdbarch;
|
||
}
|
||
|
||
static int
|
||
return_zero (void)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
return_one (void)
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
return_minus_one (void)
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
/* Find a single runnable target in the stack and return it. If for
|
||
some reason there is more than one, return NULL. */
|
||
|
||
struct target_ops *
|
||
find_run_target (void)
|
||
{
|
||
struct target_ops **t;
|
||
struct target_ops *runable = NULL;
|
||
int count;
|
||
|
||
count = 0;
|
||
|
||
for (t = target_structs; t < target_structs + target_struct_size; ++t)
|
||
{
|
||
if ((*t)->to_can_run && target_can_run (*t))
|
||
{
|
||
runable = *t;
|
||
++count;
|
||
}
|
||
}
|
||
|
||
return (count == 1 ? runable : NULL);
|
||
}
|
||
|
||
/*
|
||
* Find the next target down the stack from the specified target.
|
||
*/
|
||
|
||
struct target_ops *
|
||
find_target_beneath (struct target_ops *t)
|
||
{
|
||
return t->beneath;
|
||
}
|
||
|
||
|
||
/* The inferior process has died. Long live the inferior! */
|
||
|
||
void
|
||
generic_mourn_inferior (void)
|
||
{
|
||
ptid_t ptid;
|
||
|
||
ptid = inferior_ptid;
|
||
inferior_ptid = null_ptid;
|
||
|
||
if (!ptid_equal (ptid, null_ptid))
|
||
{
|
||
int pid = ptid_get_pid (ptid);
|
||
exit_inferior (pid);
|
||
}
|
||
|
||
breakpoint_init_inferior (inf_exited);
|
||
registers_changed ();
|
||
|
||
reopen_exec_file ();
|
||
reinit_frame_cache ();
|
||
|
||
if (deprecated_detach_hook)
|
||
deprecated_detach_hook ();
|
||
}
|
||
|
||
/* Helper function for child_wait and the derivatives of child_wait.
|
||
HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
|
||
translation of that in OURSTATUS. */
|
||
void
|
||
store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus)
|
||
{
|
||
if (WIFEXITED (hoststatus))
|
||
{
|
||
ourstatus->kind = TARGET_WAITKIND_EXITED;
|
||
ourstatus->value.integer = WEXITSTATUS (hoststatus);
|
||
}
|
||
else if (!WIFSTOPPED (hoststatus))
|
||
{
|
||
ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
|
||
ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus));
|
||
}
|
||
else
|
||
{
|
||
ourstatus->kind = TARGET_WAITKIND_STOPPED;
|
||
ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
|
||
}
|
||
}
|
||
|
||
/* Convert a normal process ID to a string. Returns the string in a
|
||
static buffer. */
|
||
|
||
char *
|
||
normal_pid_to_str (ptid_t ptid)
|
||
{
|
||
static char buf[32];
|
||
|
||
xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
|
||
return buf;
|
||
}
|
||
|
||
static char *
|
||
dummy_pid_to_str (struct target_ops *ops, ptid_t ptid)
|
||
{
|
||
return normal_pid_to_str (ptid);
|
||
}
|
||
|
||
/* Error-catcher for target_find_memory_regions. */
|
||
static int
|
||
dummy_find_memory_regions (find_memory_region_ftype ignore1, void *ignore2)
|
||
{
|
||
error (_("Command not implemented for this target."));
|
||
return 0;
|
||
}
|
||
|
||
/* Error-catcher for target_make_corefile_notes. */
|
||
static char *
|
||
dummy_make_corefile_notes (bfd *ignore1, int *ignore2)
|
||
{
|
||
error (_("Command not implemented for this target."));
|
||
return NULL;
|
||
}
|
||
|
||
/* Error-catcher for target_get_bookmark. */
|
||
static gdb_byte *
|
||
dummy_get_bookmark (char *ignore1, int ignore2)
|
||
{
|
||
tcomplain ();
|
||
return NULL;
|
||
}
|
||
|
||
/* Error-catcher for target_goto_bookmark. */
|
||
static void
|
||
dummy_goto_bookmark (gdb_byte *ignore, int from_tty)
|
||
{
|
||
tcomplain ();
|
||
}
|
||
|
||
/* Set up the handful of non-empty slots needed by the dummy target
|
||
vector. */
|
||
|
||
static void
|
||
init_dummy_target (void)
|
||
{
|
||
dummy_target.to_shortname = "None";
|
||
dummy_target.to_longname = "None";
|
||
dummy_target.to_doc = "";
|
||
dummy_target.to_attach = find_default_attach;
|
||
dummy_target.to_detach =
|
||
(void (*)(struct target_ops *, char *, int))target_ignore;
|
||
dummy_target.to_create_inferior = find_default_create_inferior;
|
||
dummy_target.to_can_async_p = find_default_can_async_p;
|
||
dummy_target.to_is_async_p = find_default_is_async_p;
|
||
dummy_target.to_supports_non_stop = find_default_supports_non_stop;
|
||
dummy_target.to_pid_to_str = dummy_pid_to_str;
|
||
dummy_target.to_stratum = dummy_stratum;
|
||
dummy_target.to_find_memory_regions = dummy_find_memory_regions;
|
||
dummy_target.to_make_corefile_notes = dummy_make_corefile_notes;
|
||
dummy_target.to_get_bookmark = dummy_get_bookmark;
|
||
dummy_target.to_goto_bookmark = dummy_goto_bookmark;
|
||
dummy_target.to_xfer_partial = default_xfer_partial;
|
||
dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero;
|
||
dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero;
|
||
dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero;
|
||
dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero;
|
||
dummy_target.to_has_execution = (int (*) (struct target_ops *)) return_zero;
|
||
dummy_target.to_stopped_by_watchpoint = return_zero;
|
||
dummy_target.to_stopped_data_address =
|
||
(int (*) (struct target_ops *, CORE_ADDR *)) return_zero;
|
||
dummy_target.to_magic = OPS_MAGIC;
|
||
}
|
||
|
||
static void
|
||
debug_to_open (char *args, int from_tty)
|
||
{
|
||
debug_target.to_open (args, from_tty);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty);
|
||
}
|
||
|
||
void
|
||
target_close (struct target_ops *targ, int quitting)
|
||
{
|
||
if (targ->to_xclose != NULL)
|
||
targ->to_xclose (targ, quitting);
|
||
else if (targ->to_close != NULL)
|
||
targ->to_close (quitting);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting);
|
||
}
|
||
|
||
void
|
||
target_attach (char *args, int from_tty)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_attach != NULL)
|
||
{
|
||
t->to_attach (t, args, from_tty);
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n",
|
||
args, from_tty);
|
||
return;
|
||
}
|
||
}
|
||
|
||
internal_error (__FILE__, __LINE__,
|
||
"could not find a target to attach");
|
||
}
|
||
|
||
int
|
||
target_thread_alive (ptid_t ptid)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_thread_alive != NULL)
|
||
{
|
||
int retval;
|
||
|
||
retval = t->to_thread_alive (t, ptid);
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
|
||
PIDGET (ptid), retval);
|
||
|
||
return retval;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
target_find_new_threads (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_find_new_threads != NULL)
|
||
{
|
||
t->to_find_new_threads (t);
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n");
|
||
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
target_stop (ptid_t ptid)
|
||
{
|
||
if (!may_stop)
|
||
{
|
||
warning (_("May not interrupt or stop the target, ignoring attempt"));
|
||
return;
|
||
}
|
||
|
||
(*current_target.to_stop) (ptid);
|
||
}
|
||
|
||
static void
|
||
debug_to_post_attach (int pid)
|
||
{
|
||
debug_target.to_post_attach (pid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
|
||
}
|
||
|
||
/* Return a pretty printed form of target_waitstatus.
|
||
Space for the result is malloc'd, caller must free. */
|
||
|
||
char *
|
||
target_waitstatus_to_string (const struct target_waitstatus *ws)
|
||
{
|
||
const char *kind_str = "status->kind = ";
|
||
|
||
switch (ws->kind)
|
||
{
|
||
case TARGET_WAITKIND_EXITED:
|
||
return xstrprintf ("%sexited, status = %d",
|
||
kind_str, ws->value.integer);
|
||
case TARGET_WAITKIND_STOPPED:
|
||
return xstrprintf ("%sstopped, signal = %s",
|
||
kind_str, target_signal_to_name (ws->value.sig));
|
||
case TARGET_WAITKIND_SIGNALLED:
|
||
return xstrprintf ("%ssignalled, signal = %s",
|
||
kind_str, target_signal_to_name (ws->value.sig));
|
||
case TARGET_WAITKIND_LOADED:
|
||
return xstrprintf ("%sloaded", kind_str);
|
||
case TARGET_WAITKIND_FORKED:
|
||
return xstrprintf ("%sforked", kind_str);
|
||
case TARGET_WAITKIND_VFORKED:
|
||
return xstrprintf ("%svforked", kind_str);
|
||
case TARGET_WAITKIND_EXECD:
|
||
return xstrprintf ("%sexecd", kind_str);
|
||
case TARGET_WAITKIND_SYSCALL_ENTRY:
|
||
return xstrprintf ("%sentered syscall", kind_str);
|
||
case TARGET_WAITKIND_SYSCALL_RETURN:
|
||
return xstrprintf ("%sexited syscall", kind_str);
|
||
case TARGET_WAITKIND_SPURIOUS:
|
||
return xstrprintf ("%sspurious", kind_str);
|
||
case TARGET_WAITKIND_IGNORE:
|
||
return xstrprintf ("%signore", kind_str);
|
||
case TARGET_WAITKIND_NO_HISTORY:
|
||
return xstrprintf ("%sno-history", kind_str);
|
||
default:
|
||
return xstrprintf ("%sunknown???", kind_str);
|
||
}
|
||
}
|
||
|
||
static void
|
||
debug_print_register (const char * func,
|
||
struct regcache *regcache, int regno)
|
||
{
|
||
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "%s ", func);
|
||
if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
|
||
&& gdbarch_register_name (gdbarch, regno) != NULL
|
||
&& gdbarch_register_name (gdbarch, regno)[0] != '\0')
|
||
fprintf_unfiltered (gdb_stdlog, "(%s)",
|
||
gdbarch_register_name (gdbarch, regno));
|
||
else
|
||
fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
|
||
if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
|
||
{
|
||
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
||
int i, size = register_size (gdbarch, regno);
|
||
unsigned char buf[MAX_REGISTER_SIZE];
|
||
|
||
regcache_raw_collect (regcache, regno, buf);
|
||
fprintf_unfiltered (gdb_stdlog, " = ");
|
||
for (i = 0; i < size; i++)
|
||
{
|
||
fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
|
||
}
|
||
if (size <= sizeof (LONGEST))
|
||
{
|
||
ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, " %s %s",
|
||
core_addr_to_string_nz (val), plongest (val));
|
||
}
|
||
}
|
||
fprintf_unfiltered (gdb_stdlog, "\n");
|
||
}
|
||
|
||
void
|
||
target_fetch_registers (struct regcache *regcache, int regno)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_fetch_registers != NULL)
|
||
{
|
||
t->to_fetch_registers (t, regcache, regno);
|
||
if (targetdebug)
|
||
debug_print_register ("target_fetch_registers", regcache, regno);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
target_store_registers (struct regcache *regcache, int regno)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
if (!may_write_registers)
|
||
error (_("Writing to registers is not allowed (regno %d)"), regno);
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_store_registers != NULL)
|
||
{
|
||
t->to_store_registers (t, regcache, regno);
|
||
if (targetdebug)
|
||
{
|
||
debug_print_register ("target_store_registers", regcache, regno);
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
|
||
noprocess ();
|
||
}
|
||
|
||
int
|
||
target_core_of_thread (ptid_t ptid)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_core_of_thread != NULL)
|
||
{
|
||
int retval = t->to_core_of_thread (t, ptid);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_core_of_thread (%d) = %d\n",
|
||
PIDGET (ptid), retval);
|
||
return retval;
|
||
}
|
||
}
|
||
|
||
return -1;
|
||
}
|
||
|
||
int
|
||
target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = current_target.beneath; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_verify_memory != NULL)
|
||
{
|
||
int retval = t->to_verify_memory (t, data, memaddr, size);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_verify_memory (%s, %s) = %d\n",
|
||
paddress (target_gdbarch, memaddr),
|
||
pulongest (size),
|
||
retval);
|
||
return retval;
|
||
}
|
||
}
|
||
|
||
tcomplain ();
|
||
}
|
||
|
||
static void
|
||
debug_to_prepare_to_store (struct regcache *regcache)
|
||
{
|
||
debug_target.to_prepare_to_store (regcache);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n");
|
||
}
|
||
|
||
static int
|
||
deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len,
|
||
int write, struct mem_attrib *attrib,
|
||
struct target_ops *target)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write,
|
||
attrib, target);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
|
||
paddress (target_gdbarch, memaddr), len,
|
||
write ? "write" : "read", retval);
|
||
|
||
if (retval > 0)
|
||
{
|
||
int i;
|
||
|
||
fputs_unfiltered (", bytes =", gdb_stdlog);
|
||
for (i = 0; i < retval; i++)
|
||
{
|
||
if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
|
||
{
|
||
if (targetdebug < 2 && i > 0)
|
||
{
|
||
fprintf_unfiltered (gdb_stdlog, " ...");
|
||
break;
|
||
}
|
||
fprintf_unfiltered (gdb_stdlog, "\n");
|
||
}
|
||
|
||
fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
|
||
}
|
||
}
|
||
|
||
fputc_unfiltered ('\n', gdb_stdlog);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_files_info (struct target_ops *target)
|
||
{
|
||
debug_target.to_files_info (target);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n");
|
||
}
|
||
|
||
static int
|
||
debug_to_insert_breakpoint (struct gdbarch *gdbarch,
|
||
struct bp_target_info *bp_tgt)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_insert_breakpoint (%s, xxx) = %ld\n",
|
||
core_addr_to_string (bp_tgt->placed_address),
|
||
(unsigned long) retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_remove_breakpoint (struct gdbarch *gdbarch,
|
||
struct bp_target_info *bp_tgt)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_remove_breakpoint (%s, xxx) = %ld\n",
|
||
core_addr_to_string (bp_tgt->placed_address),
|
||
(unsigned long) retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
|
||
(unsigned long) type,
|
||
(unsigned long) cnt,
|
||
(unsigned long) from_tty,
|
||
(unsigned long) retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
|
||
{
|
||
CORE_ADDR retval;
|
||
|
||
retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
|
||
core_addr_to_string (addr), (unsigned long) len,
|
||
core_addr_to_string (retval));
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int rw,
|
||
struct expression *cond)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_can_accel_watchpoint_condition (addr, len, rw, cond);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_can_accel_watchpoint_condition (%s, %d, %d, %s) = %ld\n",
|
||
core_addr_to_string (addr), len, rw,
|
||
host_address_to_string (cond), (unsigned long) retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_stopped_by_watchpoint (void)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_stopped_by_watchpoint ();
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_stopped_by_watchpoint () = %ld\n",
|
||
(unsigned long) retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_stopped_data_address (target, addr);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_stopped_data_address ([%s]) = %ld\n",
|
||
core_addr_to_string (*addr),
|
||
(unsigned long)retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_watchpoint_addr_within_range (struct target_ops *target,
|
||
CORE_ADDR addr,
|
||
CORE_ADDR start, int length)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_watchpoint_addr_within_range (target, addr,
|
||
start, length);
|
||
|
||
fprintf_filtered (gdb_stdlog,
|
||
"target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
|
||
core_addr_to_string (addr), core_addr_to_string (start),
|
||
length, retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch,
|
||
struct bp_target_info *bp_tgt)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_insert_hw_breakpoint (%s, xxx) = %ld\n",
|
||
core_addr_to_string (bp_tgt->placed_address),
|
||
(unsigned long) retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch,
|
||
struct bp_target_info *bp_tgt)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_remove_hw_breakpoint (%s, xxx) = %ld\n",
|
||
core_addr_to_string (bp_tgt->placed_address),
|
||
(unsigned long) retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type,
|
||
struct expression *cond)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_insert_watchpoint (addr, len, type, cond);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
|
||
core_addr_to_string (addr), len, type,
|
||
host_address_to_string (cond), (unsigned long) retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type,
|
||
struct expression *cond)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_remove_watchpoint (addr, len, type, cond);
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
|
||
core_addr_to_string (addr), len, type,
|
||
host_address_to_string (cond), (unsigned long) retval);
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_init (void)
|
||
{
|
||
debug_target.to_terminal_init ();
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_inferior (void)
|
||
{
|
||
debug_target.to_terminal_inferior ();
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_ours_for_output (void)
|
||
{
|
||
debug_target.to_terminal_ours_for_output ();
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_ours (void)
|
||
{
|
||
debug_target.to_terminal_ours ();
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_save_ours (void)
|
||
{
|
||
debug_target.to_terminal_save_ours ();
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_info (char *arg, int from_tty)
|
||
{
|
||
debug_target.to_terminal_info (arg, from_tty);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg,
|
||
from_tty);
|
||
}
|
||
|
||
static void
|
||
debug_to_load (char *args, int from_tty)
|
||
{
|
||
debug_target.to_load (args, from_tty);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty);
|
||
}
|
||
|
||
static int
|
||
debug_to_lookup_symbol (char *name, CORE_ADDR *addrp)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_lookup_symbol (name, addrp);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_post_startup_inferior (ptid_t ptid)
|
||
{
|
||
debug_target.to_post_startup_inferior (ptid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n",
|
||
PIDGET (ptid));
|
||
}
|
||
|
||
static void
|
||
debug_to_insert_fork_catchpoint (int pid)
|
||
{
|
||
debug_target.to_insert_fork_catchpoint (pid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d)\n",
|
||
pid);
|
||
}
|
||
|
||
static int
|
||
debug_to_remove_fork_catchpoint (int pid)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_remove_fork_catchpoint (pid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n",
|
||
pid, retval);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_insert_vfork_catchpoint (int pid)
|
||
{
|
||
debug_target.to_insert_vfork_catchpoint (pid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)\n",
|
||
pid);
|
||
}
|
||
|
||
static int
|
||
debug_to_remove_vfork_catchpoint (int pid)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_remove_vfork_catchpoint (pid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n",
|
||
pid, retval);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_insert_exec_catchpoint (int pid)
|
||
{
|
||
debug_target.to_insert_exec_catchpoint (pid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d)\n",
|
||
pid);
|
||
}
|
||
|
||
static int
|
||
debug_to_remove_exec_catchpoint (int pid)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_remove_exec_catchpoint (pid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n",
|
||
pid, retval);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_has_exited (int pid, int wait_status, int *exit_status)
|
||
{
|
||
int has_exited;
|
||
|
||
has_exited = debug_target.to_has_exited (pid, wait_status, exit_status);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n",
|
||
pid, wait_status, *exit_status, has_exited);
|
||
|
||
return has_exited;
|
||
}
|
||
|
||
static int
|
||
debug_to_can_run (void)
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_can_run ();
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_notice_signals (ptid_t ptid)
|
||
{
|
||
debug_target.to_notice_signals (ptid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n",
|
||
PIDGET (ptid));
|
||
}
|
||
|
||
static struct gdbarch *
|
||
debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid)
|
||
{
|
||
struct gdbarch *retval;
|
||
|
||
retval = debug_target.to_thread_architecture (ops, ptid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_thread_architecture (%s) = %s [%s]\n",
|
||
target_pid_to_str (ptid), host_address_to_string (retval),
|
||
gdbarch_bfd_arch_info (retval)->printable_name);
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_stop (ptid_t ptid)
|
||
{
|
||
debug_target.to_stop (ptid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n",
|
||
target_pid_to_str (ptid));
|
||
}
|
||
|
||
static void
|
||
debug_to_rcmd (char *command,
|
||
struct ui_file *outbuf)
|
||
{
|
||
debug_target.to_rcmd (command, outbuf);
|
||
fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
|
||
}
|
||
|
||
static char *
|
||
debug_to_pid_to_exec_file (int pid)
|
||
{
|
||
char *exec_file;
|
||
|
||
exec_file = debug_target.to_pid_to_exec_file (pid);
|
||
|
||
fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n",
|
||
pid, exec_file);
|
||
|
||
return exec_file;
|
||
}
|
||
|
||
static void
|
||
setup_target_debug (void)
|
||
{
|
||
memcpy (&debug_target, ¤t_target, sizeof debug_target);
|
||
|
||
current_target.to_open = debug_to_open;
|
||
current_target.to_post_attach = debug_to_post_attach;
|
||
current_target.to_prepare_to_store = debug_to_prepare_to_store;
|
||
current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory;
|
||
current_target.to_files_info = debug_to_files_info;
|
||
current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
|
||
current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
|
||
current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint;
|
||
current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint;
|
||
current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint;
|
||
current_target.to_insert_watchpoint = debug_to_insert_watchpoint;
|
||
current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
|
||
current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
|
||
current_target.to_stopped_data_address = debug_to_stopped_data_address;
|
||
current_target.to_watchpoint_addr_within_range = debug_to_watchpoint_addr_within_range;
|
||
current_target.to_region_ok_for_hw_watchpoint = debug_to_region_ok_for_hw_watchpoint;
|
||
current_target.to_can_accel_watchpoint_condition = debug_to_can_accel_watchpoint_condition;
|
||
current_target.to_terminal_init = debug_to_terminal_init;
|
||
current_target.to_terminal_inferior = debug_to_terminal_inferior;
|
||
current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output;
|
||
current_target.to_terminal_ours = debug_to_terminal_ours;
|
||
current_target.to_terminal_save_ours = debug_to_terminal_save_ours;
|
||
current_target.to_terminal_info = debug_to_terminal_info;
|
||
current_target.to_load = debug_to_load;
|
||
current_target.to_lookup_symbol = debug_to_lookup_symbol;
|
||
current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
|
||
current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
|
||
current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
|
||
current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
|
||
current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
|
||
current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
|
||
current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
|
||
current_target.to_has_exited = debug_to_has_exited;
|
||
current_target.to_can_run = debug_to_can_run;
|
||
current_target.to_notice_signals = debug_to_notice_signals;
|
||
current_target.to_stop = debug_to_stop;
|
||
current_target.to_rcmd = debug_to_rcmd;
|
||
current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
|
||
current_target.to_thread_architecture = debug_to_thread_architecture;
|
||
}
|
||
|
||
|
||
static char targ_desc[] =
|
||
"Names of targets and files being debugged.\n\
|
||
Shows the entire stack of targets currently in use (including the exec-file,\n\
|
||
core-file, and process, if any), as well as the symbol file name.";
|
||
|
||
static void
|
||
do_monitor_command (char *cmd,
|
||
int from_tty)
|
||
{
|
||
if ((current_target.to_rcmd
|
||
== (void (*) (char *, struct ui_file *)) tcomplain)
|
||
|| (current_target.to_rcmd == debug_to_rcmd
|
||
&& (debug_target.to_rcmd
|
||
== (void (*) (char *, struct ui_file *)) tcomplain)))
|
||
error (_("\"monitor\" command not supported by this target."));
|
||
target_rcmd (cmd, gdb_stdtarg);
|
||
}
|
||
|
||
/* Print the name of each layers of our target stack. */
|
||
|
||
static void
|
||
maintenance_print_target_stack (char *cmd, int from_tty)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
printf_filtered (_("The current target stack is:\n"));
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
{
|
||
printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname);
|
||
}
|
||
}
|
||
|
||
/* Controls if async mode is permitted. */
|
||
int target_async_permitted = 0;
|
||
|
||
/* The set command writes to this variable. If the inferior is
|
||
executing, linux_nat_async_permitted is *not* updated. */
|
||
static int target_async_permitted_1 = 0;
|
||
|
||
static void
|
||
set_maintenance_target_async_permitted (char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
if (have_live_inferiors ())
|
||
{
|
||
target_async_permitted_1 = target_async_permitted;
|
||
error (_("Cannot change this setting while the inferior is running."));
|
||
}
|
||
|
||
target_async_permitted = target_async_permitted_1;
|
||
}
|
||
|
||
static void
|
||
show_maintenance_target_async_permitted (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c,
|
||
const char *value)
|
||
{
|
||
fprintf_filtered (file, _("\
|
||
Controlling the inferior in asynchronous mode is %s.\n"), value);
|
||
}
|
||
|
||
/* Temporary copies of permission settings. */
|
||
|
||
static int may_write_registers_1 = 1;
|
||
static int may_write_memory_1 = 1;
|
||
static int may_insert_breakpoints_1 = 1;
|
||
static int may_insert_tracepoints_1 = 1;
|
||
static int may_insert_fast_tracepoints_1 = 1;
|
||
static int may_stop_1 = 1;
|
||
|
||
/* Make the user-set values match the real values again. */
|
||
|
||
void
|
||
update_target_permissions (void)
|
||
{
|
||
may_write_registers_1 = may_write_registers;
|
||
may_write_memory_1 = may_write_memory;
|
||
may_insert_breakpoints_1 = may_insert_breakpoints;
|
||
may_insert_tracepoints_1 = may_insert_tracepoints;
|
||
may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints;
|
||
may_stop_1 = may_stop;
|
||
}
|
||
|
||
/* The one function handles (most of) the permission flags in the same
|
||
way. */
|
||
|
||
static void
|
||
set_target_permissions (char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
if (target_has_execution)
|
||
{
|
||
update_target_permissions ();
|
||
error (_("Cannot change this setting while the inferior is running."));
|
||
}
|
||
|
||
/* Make the real values match the user-changed values. */
|
||
may_write_registers = may_write_registers_1;
|
||
may_insert_breakpoints = may_insert_breakpoints_1;
|
||
may_insert_tracepoints = may_insert_tracepoints_1;
|
||
may_insert_fast_tracepoints = may_insert_fast_tracepoints_1;
|
||
may_stop = may_stop_1;
|
||
update_observer_mode ();
|
||
}
|
||
|
||
/* Set memory write permission independently of observer mode. */
|
||
|
||
static void
|
||
set_write_memory_permission (char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
/* Make the real values match the user-changed values. */
|
||
may_write_memory = may_write_memory_1;
|
||
update_observer_mode ();
|
||
}
|
||
|
||
|
||
void
|
||
initialize_targets (void)
|
||
{
|
||
init_dummy_target ();
|
||
push_target (&dummy_target);
|
||
|
||
add_info ("target", target_info, targ_desc);
|
||
add_info ("files", target_info, targ_desc);
|
||
|
||
add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\
|
||
Set target debugging."), _("\
|
||
Show target debugging."), _("\
|
||
When non-zero, target debugging is enabled. Higher numbers are more\n\
|
||
verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
|
||
command."),
|
||
NULL,
|
||
show_targetdebug,
|
||
&setdebuglist, &showdebuglist);
|
||
|
||
add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
|
||
&trust_readonly, _("\
|
||
Set mode for reading from readonly sections."), _("\
|
||
Show mode for reading from readonly sections."), _("\
|
||
When this mode is on, memory reads from readonly sections (such as .text)\n\
|
||
will be read from the object file instead of from the target. This will\n\
|
||
result in significant performance improvement for remote targets."),
|
||
NULL,
|
||
show_trust_readonly,
|
||
&setlist, &showlist);
|
||
|
||
add_com ("monitor", class_obscure, do_monitor_command,
|
||
_("Send a command to the remote monitor (remote targets only)."));
|
||
|
||
add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack,
|
||
_("Print the name of each layer of the internal target stack."),
|
||
&maintenanceprintlist);
|
||
|
||
add_setshow_boolean_cmd ("target-async", no_class,
|
||
&target_async_permitted_1, _("\
|
||
Set whether gdb controls the inferior in asynchronous mode."), _("\
|
||
Show whether gdb controls the inferior in asynchronous mode."), _("\
|
||
Tells gdb whether to control the inferior in asynchronous mode."),
|
||
set_maintenance_target_async_permitted,
|
||
show_maintenance_target_async_permitted,
|
||
&setlist,
|
||
&showlist);
|
||
|
||
add_setshow_boolean_cmd ("stack-cache", class_support,
|
||
&stack_cache_enabled_p_1, _("\
|
||
Set cache use for stack access."), _("\
|
||
Show cache use for stack access."), _("\
|
||
When on, use the data cache for all stack access, regardless of any\n\
|
||
configured memory regions. This improves remote performance significantly.\n\
|
||
By default, caching for stack access is on."),
|
||
set_stack_cache_enabled_p,
|
||
show_stack_cache_enabled_p,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-write-registers", class_support,
|
||
&may_write_registers_1, _("\
|
||
Set permission to write into registers."), _("\
|
||
Show permission to write into registers."), _("\
|
||
When this permission is on, GDB may write into the target's registers.\n\
|
||
Otherwise, any sort of write attempt will result in an error."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-write-memory", class_support,
|
||
&may_write_memory_1, _("\
|
||
Set permission to write into target memory."), _("\
|
||
Show permission to write into target memory."), _("\
|
||
When this permission is on, GDB may write into the target's memory.\n\
|
||
Otherwise, any sort of write attempt will result in an error."),
|
||
set_write_memory_permission, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-insert-breakpoints", class_support,
|
||
&may_insert_breakpoints_1, _("\
|
||
Set permission to insert breakpoints in the target."), _("\
|
||
Show permission to insert breakpoints in the target."), _("\
|
||
When this permission is on, GDB may insert breakpoints in the program.\n\
|
||
Otherwise, any sort of insertion attempt will result in an error."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-insert-tracepoints", class_support,
|
||
&may_insert_tracepoints_1, _("\
|
||
Set permission to insert tracepoints in the target."), _("\
|
||
Show permission to insert tracepoints in the target."), _("\
|
||
When this permission is on, GDB may insert tracepoints in the program.\n\
|
||
Otherwise, any sort of insertion attempt will result in an error."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support,
|
||
&may_insert_fast_tracepoints_1, _("\
|
||
Set permission to insert fast tracepoints in the target."), _("\
|
||
Show permission to insert fast tracepoints in the target."), _("\
|
||
When this permission is on, GDB may insert fast tracepoints.\n\
|
||
Otherwise, any sort of insertion attempt will result in an error."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-interrupt", class_support,
|
||
&may_stop_1, _("\
|
||
Set permission to interrupt or signal the target."), _("\
|
||
Show permission to interrupt or signal the target."), _("\
|
||
When this permission is on, GDB may interrupt/stop the target's execution.\n\
|
||
Otherwise, any attempt to interrupt or stop will be ignored."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
|
||
target_dcache = dcache_init ();
|
||
}
|