/* Select target systems and architectures at runtime for GDB.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
Contributed by Cygnus Support.
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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include <errno.h>
#include "regcache.h"
#include "gdb_assert.h"
#include "gdbcore.h"
+#include "exceptions.h"
+#include "target-descriptions.h"
+#include "gdbthread.h"
+#include "solib.h"
static void target_info (char *, int);
-static void maybe_kill_then_attach (char *, int);
-
static void kill_or_be_killed (int);
static void default_terminal_info (char *, int);
-static int default_region_size_ok_for_hw_watchpoint (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);
+static void tcomplain (void) ATTR_NORETURN;
static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
static LONGEST default_xfer_partial (struct target_ops *ops,
enum target_object object,
- const char *annex, void *readbuf,
- const void *writebuf,
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf,
ULONGEST offset, LONGEST len);
-/* Transfer LEN bytes between target address MEMADDR and GDB address
- MYADDR. Returns 0 for success, errno code for failure (which
- includes partial transfers -- if you want a more useful response to
- partial transfers, try either target_read_memory_partial or
- target_write_memory_partial). */
+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 int target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
- int write);
+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 void init_dummy_target (void);
static void debug_to_close (int);
-static void debug_to_attach (char *, int);
+static void debug_to_attach (struct target_ops *ops, char *, int);
-static void debug_to_detach (char *, int);
-
-static void debug_to_disconnect (char *, int);
+static void debug_to_detach (struct target_ops *ops, char *, int);
static void debug_to_resume (ptid_t, int, enum target_signal);
static ptid_t debug_to_wait (ptid_t, struct target_waitstatus *);
-static void debug_to_fetch_registers (int);
-
-static void debug_to_store_registers (int);
+static void debug_to_fetch_registers (struct regcache *, int);
-static void debug_to_prepare_to_store (void);
+static void debug_to_store_registers (struct regcache *, int);
-static int deprecated_debug_xfer_memory (CORE_ADDR, char *, int, int,
- struct mem_attrib *,
- struct target_ops *);
+static void debug_to_prepare_to_store (struct regcache *);
static void debug_to_files_info (struct target_ops *);
-static int debug_to_insert_breakpoint (CORE_ADDR, char *);
+static int debug_to_insert_breakpoint (struct bp_target_info *);
-static int debug_to_remove_breakpoint (CORE_ADDR, char *);
+static int debug_to_remove_breakpoint (struct bp_target_info *);
static int debug_to_can_use_hw_breakpoint (int, int, int);
-static int debug_to_insert_hw_breakpoint (CORE_ADDR, char *);
+static int debug_to_insert_hw_breakpoint (struct bp_target_info *);
-static int debug_to_remove_hw_breakpoint (CORE_ADDR, char *);
+static int debug_to_remove_hw_breakpoint (struct bp_target_info *);
static int debug_to_insert_watchpoint (CORE_ADDR, int, int);
static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
-static int debug_to_region_size_ok_for_hw_watchpoint (int);
+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 void debug_to_terminal_init (void);
static int debug_to_lookup_symbol (char *, CORE_ADDR *);
-static void debug_to_mourn_inferior (void);
+static void debug_to_mourn_inferior (struct target_ops *);
static int debug_to_can_run (void);
static int debug_to_thread_alive (ptid_t);
-static void debug_to_stop (void);
+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
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; the current index into the array; the allocated size of the
array. */
struct target_ops **target_structs;
unsigned target_struct_size;
static struct cmd_list_element *targetlist = NULL;
-/* Nonzero if we are debugging an attached outside process
- rather than an inferior. */
+/* Nonzero if we should trust readonly sections from the
+ executable when reading memory. */
-int attach_flag;
+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;
/* 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);
(*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);
+ return;
+ }
+ }
+
+ internal_error (__FILE__, __LINE__,
+ "could not find a target to create inferior");
+}
+
+
static int
nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
struct target_ops *t)
tcomplain ();
}
-static void
-maybe_kill_then_attach (char *args, int from_tty)
-{
- kill_or_be_killed (from_tty);
- target_attach (args, from_tty);
-}
+/* A default implementation for the to_get_ada_task_ptid target method.
-static void
-maybe_kill_then_create_inferior (char *exec, char *args, char **env,
- int from_tty)
+ 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. */
+
+ptid_t
+default_get_ada_task_ptid (long lwp, long tid)
{
- kill_or_be_killed (0);
- target_create_inferior (exec, args, env, from_tty);
+ return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
}
/* Go through the target stack from top to bottom, copying over zero
{
struct target_ops *t;
- /* First, reset curren'ts contents. */
+ /* First, reset current's contents. */
memset (¤t_target, 0, sizeof (current_target));
#define INHERIT(FIELD, TARGET) \
INHERIT (to_shortname, t);
INHERIT (to_longname, t);
INHERIT (to_doc, t);
- INHERIT (to_open, t);
- INHERIT (to_close, t);
- INHERIT (to_attach, t);
+ /* Do not inherit to_open. */
+ /* Do not inherit to_close. */
+ /* Do not inherit to_attach. */
INHERIT (to_post_attach, t);
- INHERIT (to_detach, t);
- INHERIT (to_disconnect, t);
+ INHERIT (to_attach_no_wait, t);
+ /* Do not inherit to_detach. */
+ /* Do not inherit to_disconnect. */
INHERIT (to_resume, t);
INHERIT (to_wait, t);
INHERIT (to_fetch_registers, t);
INHERIT (to_insert_watchpoint, t);
INHERIT (to_remove_watchpoint, t);
INHERIT (to_stopped_data_address, t);
- INHERIT (to_stopped_by_watchpoint, t);
+ INHERIT (to_have_steppable_watchpoint, t);
INHERIT (to_have_continuable_watchpoint, t);
- INHERIT (to_region_size_ok_for_hw_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_terminal_init, t);
INHERIT (to_terminal_inferior, t);
INHERIT (to_terminal_ours_for_output, t);
INHERIT (to_kill, t);
INHERIT (to_load, t);
INHERIT (to_lookup_symbol, t);
- INHERIT (to_create_inferior, t);
+ /* Do no inherit to_create_inferior. */
INHERIT (to_post_startup_inferior, t);
INHERIT (to_acknowledge_created_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);
- INHERIT (to_follow_fork, t);
+ /* Do not inherit to_follow_fork. */
INHERIT (to_insert_exec_catchpoint, t);
INHERIT (to_remove_exec_catchpoint, t);
- INHERIT (to_reported_exec_events_per_exec_call, t);
INHERIT (to_has_exited, t);
- INHERIT (to_mourn_inferior, t);
+ /* Do no inherit to_mourn_inferiour. */
INHERIT (to_can_run, t);
INHERIT (to_notice_signals, t);
INHERIT (to_thread_alive, t);
INHERIT (to_stop, t);
/* Do not inherit to_xfer_partial. */
INHERIT (to_rcmd, t);
- INHERIT (to_enable_exception_callback, t);
- INHERIT (to_get_current_exception_event, t);
INHERIT (to_pid_to_exec_file, t);
+ INHERIT (to_log_command, t);
INHERIT (to_stratum, t);
INHERIT (to_has_all_memory, t);
INHERIT (to_has_memory, t);
INHERIT (to_can_async_p, t);
INHERIT (to_is_async_p, t);
INHERIT (to_async, t);
- INHERIT (to_async_mask_value, t);
+ INHERIT (to_async_mask, t);
INHERIT (to_find_memory_regions, t);
INHERIT (to_make_corefile_notes, t);
INHERIT (to_get_thread_local_address, t);
+ INHERIT (to_can_execute_reverse, 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_magic, t);
+ /* Do not inherit to_memory_map. */
+ /* Do not inherit to_flash_erase. */
+ /* Do not inherit to_flash_done. */
}
#undef INHERIT
if (!current_target.field) \
current_target.field = value
- de_fault (to_open,
- (void (*) (char *, int))
+ de_fault (to_open,
+ (void (*) (char *, int))
tcomplain);
- de_fault (to_close,
- (void (*) (int))
- target_ignore);
- de_fault (to_attach,
- maybe_kill_then_attach);
- de_fault (to_post_attach,
- (void (*) (int))
+ de_fault (to_close,
+ (void (*) (int))
target_ignore);
- de_fault (to_detach,
- (void (*) (char *, int))
+ de_fault (to_post_attach,
+ (void (*) (int))
target_ignore);
- de_fault (to_disconnect,
- (void (*) (char *, int))
- tcomplain);
- de_fault (to_resume,
- (void (*) (ptid_t, int, enum target_signal))
+ de_fault (to_resume,
+ (void (*) (ptid_t, int, enum target_signal))
noprocess);
- de_fault (to_wait,
- (ptid_t (*) (ptid_t, struct target_waitstatus *))
+ de_fault (to_wait,
+ (ptid_t (*) (ptid_t, struct target_waitstatus *))
noprocess);
- de_fault (to_fetch_registers,
- (void (*) (int))
+ de_fault (to_fetch_registers,
+ (void (*) (struct regcache *, int))
target_ignore);
- de_fault (to_store_registers,
- (void (*) (int))
+ de_fault (to_store_registers,
+ (void (*) (struct regcache *, int))
noprocess);
- de_fault (to_prepare_to_store,
- (void (*) (void))
+ de_fault (to_prepare_to_store,
+ (void (*) (struct regcache *))
noprocess);
- de_fault (deprecated_xfer_memory,
- (int (*) (CORE_ADDR, char *, int, int, struct mem_attrib *, struct target_ops *))
+ 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 *))
+ de_fault (to_files_info,
+ (void (*) (struct target_ops *))
target_ignore);
- de_fault (to_insert_breakpoint,
+ de_fault (to_insert_breakpoint,
memory_insert_breakpoint);
- de_fault (to_remove_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 (*) (CORE_ADDR, char *))
+ (int (*) (struct bp_target_info *))
return_minus_one);
de_fault (to_remove_hw_breakpoint,
- (int (*) (CORE_ADDR, char *))
+ (int (*) (struct bp_target_info *))
return_minus_one);
de_fault (to_insert_watchpoint,
(int (*) (CORE_ADDR, int, int))
de_fault (to_stopped_data_address,
(int (*) (struct target_ops *, CORE_ADDR *))
return_zero);
- de_fault (to_region_size_ok_for_hw_watchpoint,
- default_region_size_ok_for_hw_watchpoint);
- de_fault (to_terminal_init,
- (void (*) (void))
+ 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_terminal_init,
+ (void (*) (void))
target_ignore);
- de_fault (to_terminal_inferior,
- (void (*) (void))
+ de_fault (to_terminal_inferior,
+ (void (*) (void))
target_ignore);
- de_fault (to_terminal_ours_for_output,
- (void (*) (void))
+ de_fault (to_terminal_ours_for_output,
+ (void (*) (void))
target_ignore);
- de_fault (to_terminal_ours,
- (void (*) (void))
+ de_fault (to_terminal_ours,
+ (void (*) (void))
target_ignore);
- de_fault (to_terminal_save_ours,
- (void (*) (void))
+ de_fault (to_terminal_save_ours,
+ (void (*) (void))
target_ignore);
- de_fault (to_terminal_info,
+ de_fault (to_terminal_info,
default_terminal_info);
- de_fault (to_kill,
- (void (*) (void))
+ de_fault (to_kill,
+ (void (*) (void))
noprocess);
- de_fault (to_load,
- (void (*) (char *, int))
+ de_fault (to_load,
+ (void (*) (char *, int))
tcomplain);
- de_fault (to_lookup_symbol,
- (int (*) (char *, CORE_ADDR *))
+ de_fault (to_lookup_symbol,
+ (int (*) (char *, CORE_ADDR *))
nosymbol);
- de_fault (to_create_inferior,
- maybe_kill_then_create_inferior);
- de_fault (to_post_startup_inferior,
- (void (*) (ptid_t))
+ de_fault (to_post_startup_inferior,
+ (void (*) (ptid_t))
target_ignore);
- de_fault (to_acknowledge_created_inferior,
- (void (*) (int))
+ de_fault (to_acknowledge_created_inferior,
+ (void (*) (int))
target_ignore);
- de_fault (to_insert_fork_catchpoint,
- (void (*) (int))
+ de_fault (to_insert_fork_catchpoint,
+ (void (*) (int))
tcomplain);
- de_fault (to_remove_fork_catchpoint,
- (int (*) (int))
+ de_fault (to_remove_fork_catchpoint,
+ (int (*) (int))
tcomplain);
- de_fault (to_insert_vfork_catchpoint,
- (void (*) (int))
+ de_fault (to_insert_vfork_catchpoint,
+ (void (*) (int))
tcomplain);
- de_fault (to_remove_vfork_catchpoint,
- (int (*) (int))
+ de_fault (to_remove_vfork_catchpoint,
+ (int (*) (int))
tcomplain);
- de_fault (to_follow_fork,
- (int (*) (int))
- target_ignore);
- de_fault (to_insert_exec_catchpoint,
- (void (*) (int))
+ de_fault (to_insert_exec_catchpoint,
+ (void (*) (int))
tcomplain);
- de_fault (to_remove_exec_catchpoint,
- (int (*) (int))
+ de_fault (to_remove_exec_catchpoint,
+ (int (*) (int))
tcomplain);
- de_fault (to_reported_exec_events_per_exec_call,
- (int (*) (void))
- return_one);
- de_fault (to_has_exited,
- (int (*) (int, int, int *))
+ de_fault (to_has_exited,
+ (int (*) (int, int, int *))
return_zero);
- de_fault (to_mourn_inferior,
- (void (*) (void))
- noprocess);
- de_fault (to_can_run,
+ de_fault (to_can_run,
return_zero);
- de_fault (to_notice_signals,
- (void (*) (ptid_t))
+ de_fault (to_notice_signals,
+ (void (*) (ptid_t))
target_ignore);
- de_fault (to_thread_alive,
- (int (*) (ptid_t))
+ de_fault (to_thread_alive,
+ (int (*) (ptid_t))
return_zero);
- de_fault (to_find_new_threads,
- (void (*) (void))
+ de_fault (to_find_new_threads,
+ (void (*) (void))
target_ignore);
- de_fault (to_extra_thread_info,
- (char *(*) (struct thread_info *))
+ de_fault (to_extra_thread_info,
+ (char *(*) (struct thread_info *))
return_zero);
- de_fault (to_stop,
- (void (*) (void))
+ de_fault (to_stop,
+ (void (*) (ptid_t))
target_ignore);
- current_target.to_xfer_partial = default_xfer_partial;
- de_fault (to_rcmd,
- (void (*) (char *, struct ui_file *))
+ current_target.to_xfer_partial = current_xfer_partial;
+ de_fault (to_rcmd,
+ (void (*) (char *, struct ui_file *))
tcomplain);
- de_fault (to_enable_exception_callback,
- (struct symtab_and_line * (*) (enum exception_event_kind, int))
- nosupport_runtime);
- de_fault (to_get_current_exception_event,
- (struct exception_event_record * (*) (void))
- nosupport_runtime);
- de_fault (to_pid_to_exec_file,
- (char *(*) (int))
- return_zero);
- de_fault (to_can_async_p,
- (int (*) (void))
+ de_fault (to_pid_to_exec_file,
+ (char *(*) (int))
return_zero);
- de_fault (to_is_async_p,
- (int (*) (void))
- return_zero);
- de_fault (to_async,
- (void (*) (void (*) (enum inferior_event_type, void*), void*))
+ de_fault (to_async,
+ (void (*) (void (*) (enum inferior_event_type, void*), void*))
tcomplain);
+ de_fault (to_async_mask,
+ (int (*) (int))
+ return_one);
+ 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);
#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 ();
+}
+
+/* Mark OPS as a running target. This reverses the effect
+ of target_mark_exited. */
+
+void
+target_mark_running (struct target_ops *ops)
+{
+ struct target_ops *t;
+
+ for (t = target_stack; t != NULL; t = t->beneath)
+ if (t == ops)
+ break;
+ if (t == NULL)
+ internal_error (__FILE__, __LINE__,
+ "Attempted to mark unpushed target \"%s\" as running",
+ ops->to_shortname);
+
+ ops->to_has_execution = 1;
+ ops->to_has_all_memory = 1;
+ ops->to_has_memory = 1;
+ ops->to_has_stack = 1;
+ ops->to_has_registers = 1;
+
+ update_current_target ();
+}
+
+/* Mark OPS as a non-running target. This reverses the effect
+ of target_mark_running. */
+
+void
+target_mark_exited (struct target_ops *ops)
+{
+ struct target_ops *t;
+
+ for (t = target_stack; t != NULL; t = t->beneath)
+ if (t == ops)
+ break;
+ if (t == NULL)
+ internal_error (__FILE__, __LINE__,
+ "Attempted to mark unpushed target \"%s\" as running",
+ ops->to_shortname);
+
+ ops->to_has_execution = 0;
+ ops->to_has_all_memory = 0;
+ ops->to_has_memory = 0;
+ ops->to_has_stack = 0;
+ ops->to_has_registers = 0;
+
+ update_current_target ();
}
/* Push a new target type into the stack of the existing target accessors,
}
/* If there's already targets at this stratum, remove them. */
- /* FIXME: cagney/2003-10-15: I think this should be poping all
+ /* 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)
{
update_current_target ();
- if (targetdebug)
- setup_target_debug ();
-
/* Not on top? */
return (t != target_stack);
}
-/* Remove a target_ops vector from the stack, wherever it may be.
+/* Remove a target_ops vector from the stack, wherever it may be.
Return how many times it was removed (0 or 1). */
int
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. */
void
pop_target (void)
{
- target_close (¤t_target, 0); /* Let it clean up */
+ target_close (target_stack, 0); /* Let it clean up */
if (unpush_target (target_stack) == 1)
return;
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);
+}
+
+/* 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;
+
+ if (target_get_thread_local_address_p ()
+ && 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_get_thread_local_address (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 (CORE_ADDR memaddr, char **string, int len, int *errnop)
{
int tlen, origlen, offset, i;
- char buf[4];
+ 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);
tlen = MIN (len, 4 - (memaddr & 3));
offset = memaddr & 3;
- errcode = target_read_memory (memaddr & ~3, buf, 4);
+ errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
if (errcode != 0)
{
/* The transfer request might have crossed the boundary to an
nbytes_read += tlen;
}
done:
+ *string = buffer;
if (errnop != NULL)
*errnop = errcode;
- if (string != NULL)
- *string = buffer;
return nbytes_read;
}
return NULL;
}
-/* Return non-zero when the target vector has supplied an xfer_partial
- method and it, rather than xfer_memory, should be used. */
-static int
-target_xfer_partial_p (void)
+/* Perform a partial memory transfer. The arguments and return
+ value are just as for target_xfer_partial. */
+
+static LONGEST
+memory_xfer_partial (struct target_ops *ops, void *readbuf, const void *writebuf,
+ ULONGEST memaddr, LONGEST len)
{
- return (target_stack != NULL
- && target_stack->to_xfer_partial != default_xfer_partial);
+ LONGEST res;
+ int reg_len;
+ struct mem_region *region;
+
+ /* Zero length requests are ok and require no work. */
+ if (len == 0)
+ return 0;
+
+ /* Try the executable file, if "trust-readonly-sections" is set. */
+ if (readbuf != NULL && trust_readonly)
+ {
+ struct section_table *secp;
+
+ secp = target_section_by_addr (ops, memaddr);
+ if (secp != NULL
+ && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section)
+ & SEC_READONLY))
+ return xfer_memory (memaddr, readbuf, len, 0, NULL, ops);
+ }
+
+ /* Likewise for accesses to unmapped overlay sections. */
+ if (readbuf != NULL && overlay_debugging)
+ {
+ struct obj_section *section = find_pc_overlay (memaddr);
+ if (pc_in_unmapped_range (memaddr, section))
+ return xfer_memory (memaddr, readbuf, len, 0, NULL, ops);
+ }
+
+ /* 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 (region->attrib.cache)
+ {
+ /* FIXME drow/2006-08-09: This call discards OPS, so the raw
+ memory request will start back at current_target. */
+ if (readbuf != NULL)
+ res = dcache_xfer_memory (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 (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)
+ break;
+
+ ops = ops->beneath;
+ }
+ while (ops != NULL);
+
+ if (readbuf && !show_memory_breakpoints)
+ breakpoint_restore_shadows (readbuf, memaddr, reg_len);
+
+ /* 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);
}
static LONGEST
LONGEST retval;
gdb_assert (ops->to_xfer_partial != NULL);
- retval = ops->to_xfer_partial (ops, object, annex, readbuf, writebuf,
- offset, 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)
+ retval = memory_xfer_partial (ops, 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, 0x%lx, 0x%lx, 0x%s, %s) = %s",
+ "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s",
ops->to_shortname,
(int) object,
(annex ? annex : "(null)"),
- (long) readbuf, (long) writebuf,
- paddr_nz (offset), paddr_d (len), paddr_d (retval));
+ 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 (retval > 0 && myaddr != NULL)
{
int i;
-
+
fputs_unfiltered (", bytes =", gdb_stdlog);
for (i = 0; i < retval; i++)
{
- if ((((long) &(myaddr[i])) & 0xf) == 0)
+ if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
{
if (targetdebug < 2 && i > 0)
{
}
fprintf_unfiltered (gdb_stdlog, "\n");
}
-
+
fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
}
}
-
+
fputc_unfiltered ('\n', gdb_stdlog);
}
return retval;
}
-/* Attempt a transfer all LEN bytes starting at OFFSET between the
- inferior's KIND:ANNEX space and GDB's READBUF/WRITEBUF buffer. If
- the transfer succeeds, return zero, otherwize the host ERRNO is
- returned.
-
- The inferior is formed from several layers. In the case of
- corefiles, inf-corefile is layered above inf-exec and a request for
- text (corefiles do not include text pages) will be first sent to
- the core-stratum, fail, and then sent to the object-file where it
- will succeed.
-
- NOTE: cagney/2004-09-30:
-
- The old code tried to use four separate mechanisms for mapping an
- object:offset:len tuple onto an inferior and its address space: the
- target stack; the inferior's TO_SECTIONS; solib's SO_LIST;
- overlays.
-
- This is stupid.
-
- The code below is instead using a single mechanism (currently
- strata). If that mechanism proves insufficient then re-factor it
- implementing another singluar mechanism (for instance, a generic
- object:annex onto inferior:object:annex say). */
-
-static LONGEST
-xfer_using_stratum (enum target_object object, const char *annex,
- ULONGEST offset, LONGEST len, void *readbuf,
- const void *writebuf)
-{
- LONGEST xfered;
- struct target_ops *target;
-
- /* Always successful. */
- if (len == 0)
- return 0;
- /* Never successful. */
- if (target_stack == NULL)
- return EIO;
-
- target = target_stack;
- while (1)
- {
- xfered = target_xfer_partial (target, object, annex,
- readbuf, writebuf, offset, len);
- if (xfered > 0)
- {
- /* The partial xfer succeeded, update the counts, check that
- the xfer hasn't finished and if it hasn't set things up
- for the next round. */
- len -= xfered;
- if (len <= 0)
- return 0;
- offset += xfered;
- if (readbuf != NULL)
- readbuf = (bfd_byte *) readbuf + xfered;
- if (writebuf != NULL)
- writebuf = (bfd_byte *) writebuf + xfered;
- target = target_stack;
- }
- else if (xfered < 0)
- {
- /* Something totally screwed up, abandon the attempt to
- xfer. */
- if (errno)
- return errno;
- else
- return EIO;
- }
- else
- {
- /* This "stratum" didn't work, try the next one down. */
- target = target->beneath;
- if (target == NULL)
- return EIO;
- }
- }
-}
-
/* 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.
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_memory_partial. */
-
-int
-target_read_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len)
-{
- if (target_xfer_partial_p ())
- return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL,
- memaddr, len, myaddr, NULL);
- else
- return target_xfer_memory (memaddr, myaddr, len, 0);
-}
+ 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_write_memory (CORE_ADDR memaddr, const bfd_byte *myaddr, int len)
+target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len)
{
- bfd_byte *bytes = alloca (len);
- memcpy (bytes, myaddr, len);
- if (target_xfer_partial_p ())
- return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL,
- memaddr, len, NULL, bytes);
+ if (target_read (¤t_target, TARGET_OBJECT_MEMORY, NULL,
+ myaddr, memaddr, len) == len)
+ return 0;
else
- return target_xfer_memory (memaddr, bytes, len, 1);
+ return EIO;
}
-#ifndef target_stopped_data_address_p
int
-target_stopped_data_address_p (struct target_ops *target)
+target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len)
{
- if (target->to_stopped_data_address
- == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero)
+ if (target_write (¤t_target, TARGET_OBJECT_MEMORY, NULL,
+ myaddr, memaddr, len) == len)
return 0;
- if (target->to_stopped_data_address == debug_to_stopped_data_address
- && (debug_target.to_stopped_data_address
- == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero))
- return 0;
- return 1;
+ else
+ return EIO;
}
-#endif
-
-static int trust_readonly = 0;
-
-/* Move memory to or from the targets. The top target gets priority;
- if it cannot handle it, it is offered to the next one down, etc.
- Result is -1 on error, or the number of bytes transfered. */
+/* Fetch the target's memory map. */
-int
-do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
- struct mem_attrib *attrib)
+VEC(mem_region_s) *
+target_memory_map (void)
{
- int res;
- int done = 0;
+ VEC(mem_region_s) *result;
+ struct mem_region *last_one, *this_one;
+ int ix;
struct target_ops *t;
- /* Zero length requests are ok and require no work. */
- if (len == 0)
- return 0;
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n");
- /* deprecated_xfer_memory is not guaranteed to set errno, even when
- it returns 0. */
- errno = 0;
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_memory_map != NULL)
+ break;
- if (!write && trust_readonly)
- {
- struct section_table *secp;
- /* User-settable option, "trust-readonly-sections". If true,
- then memory from any SEC_READONLY bfd section may be read
- directly from the bfd file. */
- secp = target_section_by_addr (¤t_target, memaddr);
- if (secp != NULL
- && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section)
- & SEC_READONLY))
- return xfer_memory (memaddr, myaddr, len, 0, attrib, ¤t_target);
- }
+ if (t == NULL)
+ return NULL;
- /* The quick case is that the top target can handle the transfer. */
- res = current_target.deprecated_xfer_memory
- (memaddr, myaddr, len, write, attrib, ¤t_target);
+ result = t->to_memory_map (t);
+ if (result == NULL)
+ return NULL;
- /* If res <= 0 then we call it again in the loop. Ah well. */
- if (res <= 0)
+ 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++)
{
- for (t = target_stack; t != NULL; t = t->beneath)
+ this_one->number = ix;
+
+ if (last_one && last_one->hi > this_one->lo)
{
- if (!t->to_has_memory)
- continue;
-
- res = t->deprecated_xfer_memory (memaddr, myaddr, len, write, attrib, t);
- if (res > 0)
- break; /* Handled all or part of xfer */
- if (t->to_has_all_memory)
- break;
+ warning (_("Overlapping regions in memory map: ignoring"));
+ VEC_free (mem_region_s, result);
+ return NULL;
}
-
- if (res <= 0)
- return -1;
+ last_one = this_one;
}
- return res;
+ return result;
}
-
-/* Perform a memory transfer. Iterate until the entire region has
- been transfered.
-
- Result is 0 or errno value. */
-
-static int
-target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write)
+void
+target_flash_erase (ULONGEST address, LONGEST length)
{
- int res;
- int reg_len;
- struct mem_region *region;
-
- /* Zero length requests are ok and require no work. */
- if (len == 0)
- {
- return 0;
- }
-
- while (len > 0)
- {
- region = lookup_mem_region(memaddr);
- if (memaddr + len < region->hi)
- reg_len = len;
- else
- reg_len = region->hi - memaddr;
+ struct target_ops *t;
- switch (region->attrib.mode)
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_flash_erase != NULL)
{
- case MEM_RO:
- if (write)
- return EIO;
- break;
-
- case MEM_WO:
- if (!write)
- return EIO;
- break;
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n",
+ paddr (address), phex (length, 0));
+ t->to_flash_erase (t, address, length);
+ return;
}
- while (reg_len > 0)
- {
- if (region->attrib.cache)
- res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
- reg_len, write);
- else
- res = do_xfer_memory (memaddr, myaddr, reg_len, write,
- ®ion->attrib);
-
- if (res <= 0)
- {
- /* If this address is for nonexistent memory, read zeros
- if reading, or do nothing if writing. Return
- error. */
- if (!write)
- memset (myaddr, 0, len);
- if (errno == 0)
- return EIO;
- else
- return errno;
- }
-
- memaddr += res;
- myaddr += res;
- len -= res;
- reg_len -= res;
- }
- }
-
- return 0; /* We managed to cover it all somehow. */
+ tcomplain ();
}
-
-/* Perform a partial memory transfer.
-
- Result is -1 on error, or the number of bytes transfered. */
-
-static int
-target_xfer_memory_partial (CORE_ADDR memaddr, char *myaddr, int len,
- int write_p, int *err)
+void
+target_flash_done (void)
{
- int res;
- int reg_len;
- struct mem_region *region;
-
- /* Zero length requests are ok and require no work. */
- if (len == 0)
- {
- *err = 0;
- return 0;
- }
-
- region = lookup_mem_region(memaddr);
- if (memaddr + len < region->hi)
- reg_len = len;
- else
- reg_len = region->hi - memaddr;
+ struct target_ops *t;
- switch (region->attrib.mode)
- {
- case MEM_RO:
- if (write_p)
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_flash_done != NULL)
{
- *err = EIO;
- return -1;
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
+ t->to_flash_done (t);
+ return;
}
- break;
- case MEM_WO:
- if (write_p)
- {
- *err = EIO;
- return -1;
- }
- break;
- }
-
- if (region->attrib.cache)
- res = dcache_xfer_memory (target_dcache, memaddr, myaddr,
- reg_len, write_p);
- else
- res = do_xfer_memory (memaddr, myaddr, reg_len, write_p,
- ®ion->attrib);
-
- if (res <= 0)
- {
- if (errno != 0)
- *err = errno;
- else
- *err = EIO;
-
- return -1;
- }
-
- *err = 0;
- return res;
+ tcomplain ();
}
+#ifndef target_stopped_data_address_p
int
-target_read_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
+target_stopped_data_address_p (struct target_ops *target)
{
- if (target_xfer_partial_p ())
- return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL,
- buf, NULL, memaddr, len);
- else
- return target_xfer_memory_partial (memaddr, buf, len, 0, err);
+ if (target->to_stopped_data_address
+ == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero)
+ return 0;
+ if (target->to_stopped_data_address == debug_to_stopped_data_address
+ && (debug_target.to_stopped_data_address
+ == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero))
+ return 0;
+ return 1;
}
+#endif
-int
-target_write_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err)
+static void
+show_trust_readonly (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
{
- if (target_xfer_partial_p ())
- return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL,
- NULL, buf, memaddr, len);
- else
- return target_xfer_memory_partial (memaddr, buf, len, 1, err);
+ 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, void *readbuf,
- const void *writebuf, ULONGEST offset, LONGEST len)
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
{
if (object == TARGET_OBJECT_MEMORY
&& ops->deprecated_xfer_memory != NULL)
do_cleanups (cleanup);
}
if (readbuf != NULL)
- xfered = ops->deprecated_xfer_memory (offset, readbuf, len, 0/*read*/,
- NULL, ops);
+ xfered = ops->deprecated_xfer_memory (offset, readbuf, len,
+ 0/*read*/, NULL, ops);
if (xfered > 0)
return xfered;
else if (xfered == 0 && errno == 0)
return -1;
}
else if (ops->beneath != NULL)
- return target_xfer_partial (ops->beneath, object, annex,
- readbuf, writebuf, offset, len);
+ 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;
}
(inbuf, outbuf)", instead of separate read/write methods, make life
easier. */
-LONGEST
+static LONGEST
target_read_partial (struct target_ops *ops,
enum target_object object,
- const char *annex, void *buf,
+ const char *annex, gdb_byte *buf,
ULONGEST offset, LONGEST len)
{
return target_xfer_partial (ops, object, annex, buf, NULL, offset, len);
}
-LONGEST
+static LONGEST
target_write_partial (struct target_ops *ops,
enum target_object object,
- const char *annex, const void *buf,
+ const char *annex, const gdb_byte *buf,
ULONGEST offset, LONGEST len)
{
return target_xfer_partial (ops, object, annex, NULL, buf, offset, len);
LONGEST
target_read (struct target_ops *ops,
enum target_object object,
- const char *annex, void *buf,
+ const char *annex, gdb_byte *buf,
ULONGEST offset, LONGEST len)
{
LONGEST xfered = 0;
while (xfered < len)
{
LONGEST xfer = target_read_partial (ops, object, annex,
- (bfd_byte *) buf + xfered,
+ (gdb_byte *) buf + xfered,
offset + xfered, len - xfered);
/* Call an observer, notifying them of the xfer progress? */
- if (xfer <= 0)
- /* Call memory_error? */
+ if (xfer == 0)
+ return xfered;
+ if (xfer < 0)
return -1;
xfered += xfer;
QUIT;
}
LONGEST
-target_write (struct target_ops *ops,
- enum target_object object,
- const char *annex, const void *buf,
- ULONGEST offset, LONGEST len)
+target_read_until_error (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)
+ {
+ /* We've got an error. Try to read in smaller blocks. */
+ ULONGEST start = offset + xfered;
+ ULONGEST remaining = len - xfered;
+ ULONGEST half;
+
+ /* If an attempt was made to read a random memory address,
+ it's likely that the very first byte is not accessible.
+ Try reading the first byte, to avoid doing log N tries
+ below. */
+ xfer = target_read_partial (ops, object, annex,
+ (gdb_byte *) buf + xfered, start, 1);
+ if (xfer <= 0)
+ return xfered;
+ start += 1;
+ remaining -= 1;
+ half = remaining/2;
+
+ while (half > 0)
+ {
+ xfer = target_read_partial (ops, object, annex,
+ (gdb_byte *) buf + xfered,
+ start, half);
+ if (xfer == 0)
+ return xfered;
+ if (xfer < 0)
+ {
+ remaining = half;
+ }
+ else
+ {
+ /* We have successfully read the first half. So, the
+ error must be in the second half. Adjust start and
+ remaining to point at the second half. */
+ xfered += xfer;
+ start += xfer;
+ remaining -= xfer;
+ }
+ half = remaining/2;
+ }
+
+ return xfered;
+ }
+ xfered += xfer;
+ QUIT;
+ }
+ return len;
+}
+
+
+/* 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,
- (bfd_byte *) buf + xfered,
+ (gdb_byte *) buf + xfered,
offset + xfered, len - xfered);
- /* Call an observer, notifying them of the xfer progress? */
- if (xfer <= 0)
- /* Call memory_error? */
+
+ if (xfer == 0)
+ return xfered;
+ if (xfer < 0)
return -1;
+
+ if (progress)
+ (*progress) (xfer, baton);
+
xfered += xfer;
QUIT;
}
return len;
}
+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, void *buf,
+get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
LONGEST len)
{
if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, buf, addr, len)
get_target_memory_unsigned (struct target_ops *ops,
CORE_ADDR addr, int len)
{
- char buf[sizeof (ULONGEST)];
+ gdb_byte buf[sizeof (ULONGEST)];
gdb_assert (len <= sizeof (buf));
get_target_memory (ops, addr, buf, len);
}
}
+/* 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 ();
+ }
+}
+
/* This is to be called by the open routine before it does
anything. */
/* 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);
- if (target_has_execution)
- pop_target ();
+ target_pre_inferior (from_tty);
}
/* Detach a target after doing deferred register stores. */
void
target_detach (char *args, int from_tty)
{
- (current_target.to_detach) (args, from_tty);
+ struct target_ops* t;
+
+ if (gdbarch_has_global_solist (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 ();
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ {
+ if (t->to_detach != NULL)
+ {
+ t->to_detach (t, args, from_tty);
+ return;
+ }
+ }
+
+ internal_error (__FILE__, __LINE__, "could not find a target to detach");
}
void
target_disconnect (char *args, int from_tty)
{
- (current_target.to_disconnect) (args, 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 ();
}
void
-target_link (char *modname, CORE_ADDR *t_reloc)
+target_resume (ptid_t ptid, int step, enum target_signal signal)
+{
+ dcache_invalidate (target_dcache);
+ (*current_target.to_resume) (ptid, step, signal);
+ set_executing (ptid, 1);
+ set_running (ptid, 1);
+}
+/* Look through the list of possible targets for a target that can
+ follow forks. */
+
+int
+target_follow_fork (int follow_child)
{
- if (DEPRECATED_STREQ (current_target.to_shortname, "rombug"))
+ struct target_ops *t;
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
{
- (current_target.to_lookup_symbol) (modname, t_reloc);
- if (*t_reloc == 0)
- error (_("Unable to link to %s and get relocation in rombug"), modname);
+ 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;
+ }
}
- else
- *t_reloc = (CORE_ADDR) -1;
+
+ /* 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);
+ return;
+ }
+ }
+
+ internal_error (__FILE__, __LINE__,
+ "could not find a target to follow mourn inferiour");
+}
+
+/* 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 + 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_async_mask (int mask)
+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 (¤t_target,
+ 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)
{
- int saved_async_masked_status = target_async_mask_value;
- target_async_mask_value = mask;
- return saved_async_masked_status;
+ 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)
+ 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.
- Result is always valid (error() is called for errors). */
+ 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)
}
if (count != 1)
- error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
+ {
+ if (do_mesg)
+ error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
+ else
+ return NULL;
+ }
return runable;
}
void
-find_default_attach (char *args, int from_tty)
+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) (args, from_tty);
+ (t->to_attach) (t, args, from_tty);
return;
}
void
-find_default_create_inferior (char *exec_file, char *allargs, char **env,
+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) (exec_file, allargs, env, from_tty);
+ (t->to_create_inferior) (t, exec_file, allargs, env, from_tty);
return;
}
+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;
+}
+
+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;
+}
+
+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 ()
+{
+ 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)
+{
+ char *document;
+ struct target_ops *t;
+
+ if (target_can_run (¤t_target))
+ t = ¤t_target;
+ else
+ t = find_default_run_target ("get OS data");
+
+ if (!t)
+ return NULL;
+
+ document = target_read_stralloc (t,
+ TARGET_OBJECT_OSDATA,
+ type);
+ return document;
+}
+
+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_region_size_ok_for_hw_watchpoint (int byte_count)
+default_watchpoint_addr_within_range (struct target_ops *target,
+ CORE_ADDR addr,
+ CORE_ADDR start, int length)
{
- return (byte_count <= TYPE_LENGTH (builtin_type_void_data_ptr));
+ return addr >= start && addr < start + length;
}
static int
/* Check to see if anyone else was pointing to this structure.
If old_value was null, then no one was. */
-
+
if (old_value)
{
for (t = target_structs; t < target_structs + target_struct_size;
current_target.to_sections_end = target->to_sections_end;
}
}
-
+
return old_count;
}
void
generic_mourn_inferior (void)
{
- extern int show_breakpoint_hit_counts;
+ ptid_t ptid;
+ ptid = inferior_ptid;
inferior_ptid = null_ptid;
- attach_flag = 0;
+
+ if (!ptid_equal (ptid, null_ptid))
+ {
+ int pid = ptid_get_pid (ptid);
+ delete_inferior (pid);
+ }
+
breakpoint_init_inferior (inf_exited);
registers_changed ();
reopen_exec_file ();
reinit_frame_cache ();
- /* It is confusing to the user for ignore counts to stick around
- from previous runs of the inferior. So clear them. */
- /* However, it is more confusing for the ignore counts to disappear when
- using hit counts. So don't clear them if we're counting hits. */
- if (!show_breakpoint_hit_counts)
- breakpoint_clear_ignore_counts ();
-
if (deprecated_detach_hook)
deprecated_detach_hook ();
}
\f
-/* Helper function for child_wait and the Lynx derivatives of child_wait.
+/* 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)
{
-#ifdef CHILD_SPECIAL_WAITSTATUS
- /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS
- if it wants to deal with hoststatus. */
- if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus))
- return;
-#endif
-
if (WIFEXITED (hoststatus))
{
ourstatus->kind = TARGET_WAITKIND_EXITED;
}
}
\f
-/* Returns zero to leave the inferior alone, one to interrupt it. */
-int (*target_activity_function) (void);
-int target_activity_fd;
-\f
-/* Convert a normal process ID to a string. Returns the string in a static
- buffer. */
+/* 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[30];
+ static char buf[32];
- sprintf (buf, "process %d", PIDGET (ptid));
+ xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
return buf;
}
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 = normal_pid_to_str;
dummy_target.to_stratum = dummy_stratum;
dummy_target.to_find_memory_regions = dummy_find_memory_regions;
targ->to_close (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);
+ return;
+ }
+ }
+
+ internal_error (__FILE__, __LINE__,
+ "could not find a target to attach");
+}
+
+
static void
-debug_to_attach (char *args, int from_tty)
+debug_to_attach (struct target_ops *ops, char *args, int from_tty)
{
- debug_target.to_attach (args, from_tty);
+ debug_target.to_attach (&debug_target, args, from_tty);
fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", args, from_tty);
}
}
static void
-debug_to_detach (char *args, int from_tty)
+debug_to_detach (struct target_ops *ops, char *args, int from_tty)
{
- debug_target.to_detach (args, from_tty);
+ debug_target.to_detach (&debug_target, args, from_tty);
fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", args, from_tty);
}
-static void
-debug_to_disconnect (char *args, int from_tty)
-{
- debug_target.to_disconnect (args, from_tty);
-
- fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n",
- args, from_tty);
-}
-
static void
debug_to_resume (ptid_t ptid, int step, enum target_signal siggnal)
{
}
static void
-debug_print_register (const char * func, int regno)
+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 < NUM_REGS + NUM_PSEUDO_REGS
- && REGISTER_NAME (regno) != NULL && REGISTER_NAME (regno)[0] != '\0')
- fprintf_unfiltered (gdb_stdlog, "(%s)", REGISTER_NAME (regno));
+ 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)
+ if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
{
- int i;
+ int i, size = register_size (gdbarch, regno);
unsigned char buf[MAX_REGISTER_SIZE];
- deprecated_read_register_gen (regno, buf);
+ regcache_raw_collect (regcache, regno, buf);
fprintf_unfiltered (gdb_stdlog, " = ");
- for (i = 0; i < register_size (current_gdbarch, regno); i++)
+ for (i = 0; i < size; i++)
{
fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
}
- if (register_size (current_gdbarch, regno) <= sizeof (LONGEST))
+ if (size <= sizeof (LONGEST))
{
- fprintf_unfiltered (gdb_stdlog, " 0x%s %s",
- paddr_nz (read_register (regno)),
- paddr_d (read_register (regno)));
+ ULONGEST val = extract_unsigned_integer (buf, size);
+ fprintf_unfiltered (gdb_stdlog, " %s %s",
+ core_addr_to_string_nz (val), plongest (val));
}
}
fprintf_unfiltered (gdb_stdlog, "\n");
}
static void
-debug_to_fetch_registers (int regno)
+debug_to_fetch_registers (struct regcache *regcache, int regno)
{
- debug_target.to_fetch_registers (regno);
- debug_print_register ("target_fetch_registers", regno);
+ debug_target.to_fetch_registers (regcache, regno);
+ debug_print_register ("target_fetch_registers", regcache, regno);
}
static void
-debug_to_store_registers (int regno)
+debug_to_store_registers (struct regcache *regcache, int regno)
{
- debug_target.to_store_registers (regno);
- debug_print_register ("target_store_registers", regno);
+ debug_target.to_store_registers (regcache, regno);
+ debug_print_register ("target_store_registers", regcache, regno);
fprintf_unfiltered (gdb_stdlog, "\n");
}
static void
-debug_to_prepare_to_store (void)
+debug_to_prepare_to_store (struct regcache *regcache)
{
- debug_target.to_prepare_to_store ();
+ 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, char *myaddr, int len,
+deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len,
int write, struct mem_attrib *attrib,
struct target_ops *target)
{
attrib, target);
fprintf_unfiltered (gdb_stdlog,
- "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
- (unsigned int) memaddr, /* possable truncate long long */
- len, write ? "write" : "read", retval);
+ "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
+ paddress (memaddr), len, write ? "write" : "read",
+ retval);
if (retval > 0)
{
fputs_unfiltered (", bytes =", gdb_stdlog);
for (i = 0; i < retval; i++)
{
- if ((((long) &(myaddr[i])) & 0xf) == 0)
+ if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
{
if (targetdebug < 2 && i > 0)
{
}
fprintf_unfiltered (gdb_stdlog, "\n");
}
-
+
fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
}
}
}
static int
-debug_to_insert_breakpoint (CORE_ADDR addr, char *save)
+debug_to_insert_breakpoint (struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_insert_breakpoint (addr, save);
+ retval = debug_target.to_insert_breakpoint (bp_tgt);
fprintf_unfiltered (gdb_stdlog,
"target_insert_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) addr,
+ (unsigned long) bp_tgt->placed_address,
(unsigned long) retval);
return retval;
}
static int
-debug_to_remove_breakpoint (CORE_ADDR addr, char *save)
+debug_to_remove_breakpoint (struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_remove_breakpoint (addr, save);
+ retval = debug_target.to_remove_breakpoint (bp_tgt);
fprintf_unfiltered (gdb_stdlog,
"target_remove_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) addr,
+ (unsigned long) bp_tgt->placed_address,
(unsigned long) retval);
return retval;
}
}
static int
-debug_to_region_size_ok_for_hw_watchpoint (int byte_count)
+debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
{
CORE_ADDR retval;
- retval = debug_target.to_region_size_ok_for_hw_watchpoint (byte_count);
+ retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len);
fprintf_unfiltered (gdb_stdlog,
- "TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (%ld) = 0x%lx\n",
- (unsigned long) byte_count,
+ "TARGET_REGION_OK_FOR_HW_WATCHPOINT (%ld, %ld) = 0x%lx\n",
+ (unsigned long) addr,
+ (unsigned long) len,
(unsigned long) retval);
return retval;
}
}
static int
-debug_to_insert_hw_breakpoint (CORE_ADDR addr, char *save)
+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 (0x%lx, 0x%lx, %d) = %d\n",
+ (unsigned long) addr, (unsigned long) start, length,
+ retval);
+ return retval;
+}
+
+static int
+debug_to_insert_hw_breakpoint (struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_insert_hw_breakpoint (addr, save);
+ retval = debug_target.to_insert_hw_breakpoint (bp_tgt);
fprintf_unfiltered (gdb_stdlog,
"target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) addr,
+ (unsigned long) bp_tgt->placed_address,
(unsigned long) retval);
return retval;
}
static int
-debug_to_remove_hw_breakpoint (CORE_ADDR addr, char *save)
+debug_to_remove_hw_breakpoint (struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_remove_hw_breakpoint (addr, save);
+ retval = debug_target.to_remove_hw_breakpoint (bp_tgt);
fprintf_unfiltered (gdb_stdlog,
"target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) addr,
+ (unsigned long) bp_tgt->placed_address,
(unsigned long) retval);
return retval;
}
{
int retval;
- retval = debug_target.to_insert_watchpoint (addr, len, type);
+ retval = debug_target.to_remove_watchpoint (addr, len, type);
fprintf_unfiltered (gdb_stdlog,
- "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
+ "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n",
(unsigned long) addr, len, type, (unsigned long) retval);
return retval;
}
}
static void
-debug_to_create_inferior (char *exec_file, char *args, char **env,
+debug_to_create_inferior (struct target_ops *ops,
+ char *exec_file, char *args, char **env,
int from_tty)
{
- debug_target.to_create_inferior (exec_file, args, env, from_tty);
+ debug_target.to_create_inferior (ops, exec_file, args, env, from_tty);
fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx, %d)\n",
exec_file, args, from_tty);
return retval;
}
-static int
-debug_to_follow_fork (int follow_child)
-{
- int retval = debug_target.to_follow_fork (follow_child);
-
- fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n",
- follow_child, retval);
-
- return retval;
-}
-
static void
debug_to_insert_exec_catchpoint (int pid)
{
return retval;
}
-static int
-debug_to_reported_exec_events_per_exec_call (void)
-{
- int reported_exec_events;
-
- reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
-
- fprintf_unfiltered (gdb_stdlog,
- "target_reported_exec_events_per_exec_call () = %d\n",
- reported_exec_events);
-
- return reported_exec_events;
-}
-
static int
debug_to_has_exited (int pid, int wait_status, int *exit_status)
{
}
static void
-debug_to_mourn_inferior (void)
+debug_to_mourn_inferior (struct target_ops *ops)
{
- debug_target.to_mourn_inferior ();
+ debug_target.to_mourn_inferior (&debug_target);
fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
}
}
static void
-debug_to_stop (void)
+debug_to_stop (ptid_t ptid)
{
- debug_target.to_stop ();
+ debug_target.to_stop (ptid);
- fprintf_unfiltered (gdb_stdlog, "target_stop ()\n");
+ fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n",
+ target_pid_to_str (ptid));
}
static void
fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command);
}
-static struct symtab_and_line *
-debug_to_enable_exception_callback (enum exception_event_kind kind, int enable)
-{
- struct symtab_and_line *result;
- result = debug_target.to_enable_exception_callback (kind, enable);
- fprintf_unfiltered (gdb_stdlog,
- "target get_exception_callback_sal (%d, %d)\n",
- kind, enable);
- return result;
-}
-
-static struct exception_event_record *
-debug_to_get_current_exception_event (void)
-{
- struct exception_event_record *result;
- result = debug_target.to_get_current_exception_event ();
- fprintf_unfiltered (gdb_stdlog, "target get_current_exception_event ()\n");
- return result;
-}
-
static char *
debug_to_pid_to_exec_file (int pid)
{
current_target.to_attach = debug_to_attach;
current_target.to_post_attach = debug_to_post_attach;
current_target.to_detach = debug_to_detach;
- current_target.to_disconnect = debug_to_disconnect;
current_target.to_resume = debug_to_resume;
current_target.to_wait = debug_to_wait;
current_target.to_fetch_registers = debug_to_fetch_registers;
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_region_size_ok_for_hw_watchpoint = debug_to_region_size_ok_for_hw_watchpoint;
+ 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_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_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_follow_fork = debug_to_follow_fork;
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_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
current_target.to_has_exited = debug_to_has_exited;
current_target.to_mourn_inferior = debug_to_mourn_inferior;
current_target.to_can_run = debug_to_can_run;
current_target.to_find_new_threads = debug_to_find_new_threads;
current_target.to_stop = debug_to_stop;
current_target.to_rcmd = debug_to_rcmd;
- current_target.to_enable_exception_callback = debug_to_enable_exception_callback;
- current_target.to_get_current_exception_event = debug_to_get_current_exception_event;
current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
-
}
\f
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 (target_has_execution)
+ {
+ 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);
+}
+
void
initialize_targets (void)
{
add_info ("target", target_info, targ_desc);
add_info ("files", target_info, targ_desc);
- deprecated_add_show_from_set
- (add_set_cmd ("target", class_maintenance, var_zinteger,
- (char *) &targetdebug,
- "Set target debugging.\n\
+ 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.", &setdebuglist),
- &showdebuglist);
+command."),
+ NULL,
+ show_targetdebug,
+ &setdebuglist, &showdebuglist);
- add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
+ 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."), _("\
will be read from the object file instead of from the target. This will\n\
result in significant performance improvement for remote targets."),
NULL,
- NULL, /* FIXME: i18n: Mode for reading from readonly sections is %s. */
+ 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);
+
target_dcache = dcache_init ();
}
projects / deliverable / binutils-gdb.git / blobdiff