/* 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
- Free Software Foundation, Inc.
+ Copyright (C) 1990-2012 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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include <errno.h>
#include "bfd.h"
#include "symfile.h"
#include "objfiles.h"
-#include "gdb_wait.h"
#include "dcache.h"
#include <signal.h>
#include "regcache.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"
+#include "gdb/fileio.h"
+#include "agent.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_ok_for_hw_watchpoint (CORE_ADDR, int);
+static int default_watchpoint_addr_within_range (struct target_ops *,
+ CORE_ADDR, CORE_ADDR, int);
-static int nosymbol (char *, CORE_ADDR *);
+static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int);
-static void tcomplain (void) ATTR_NORETURN;
+static void tcomplain (void) ATTRIBUTE_NORETURN;
static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
static struct target_ops *find_default_run_target (char *);
-static void nosupport_runtime (void);
-
static LONGEST default_xfer_partial (struct target_ops *ops,
enum target_object object,
const char *annex, gdb_byte *readbuf,
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_close (int);
-
-static void debug_to_attach (char *, int);
-
-static void debug_to_detach (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 (struct regcache *, int);
-
-static void debug_to_store_registers (struct regcache *, 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 bp_target_info *);
+static int debug_to_insert_breakpoint (struct gdbarch *,
+ struct bp_target_info *);
-static int debug_to_remove_breakpoint (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 bp_target_info *);
+static int debug_to_insert_hw_breakpoint (struct gdbarch *,
+ struct bp_target_info *);
-static int debug_to_remove_hw_breakpoint (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);
+static int debug_to_insert_watchpoint (CORE_ADDR, int, int,
+ struct expression *);
-static int debug_to_remove_watchpoint (CORE_ADDR, int, int);
+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_info (char *, int);
-static void debug_to_kill (void);
-
static void debug_to_load (char *, int);
-static int debug_to_lookup_symbol (char *, CORE_ADDR *);
-
-static void debug_to_mourn_inferior (void);
-
static int debug_to_can_run (void);
-static void debug_to_notice_signals (ptid_t);
-
-static int debug_to_thread_alive (ptid_t);
-
-static void debug_to_stop (void);
-
-/* 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;
+static void debug_to_stop (ptid_t);
/* Pointer to array of target architecture structures; the size of the
array; the current index into the array; the allocated size of the
static struct cmd_list_element *targetlist = NULL;
-/* Nonzero if we are debugging an attached outside process
- rather than an inferior. */
-
-int attach_flag;
-
/* 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 unsigned int targetdebug = 0;
static void
show_targetdebug (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
static void setup_target_debug (void);
-DCACHE *target_dcache;
+/* 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. */
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, ptid_t the_ptid)
+{
+ /* If there's no thread selected, then we can't make it run through
+ hoops. */
+ if (ptid_equal (the_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 (ptid_t the_ptid)
+{
+ struct target_ops *t;
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_has_execution (t, the_ptid))
+ return 1;
+
+ return 0;
+}
+
+int
+target_has_execution_current (void)
+{
+ return target_has_execution_1 (inferior_ptid);
+}
+
/* Add a possible target architecture to the list. */
void
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 *, ptid_t)) return_zero;
+
if (!target_structs)
{
target_struct_allocsize = DEFAULT_ALLOCSIZE;
{
}
+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)
{
- dcache_invalidate (target_dcache);
+ 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 */
+ errno = EIO; /* Can't read/write this location. */
+ return 0; /* No bytes handled. */
}
static 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
-nosupport_runtime (void)
-{
- if (ptid_equal (inferior_ptid, null_ptid))
- noprocess ();
- else
- error (_("No run-time support for this"));
-}
-
-
static void
default_terminal_info (char *args, int from_tty)
{
printf_unfiltered (_("No saved terminal information.\n"));
}
-/* This is the default target_create_inferior and target_attach function.
- If the current target is executing, it asks whether to kill it off.
- If this function returns without calling error(), it has killed off
- the target, and the operation should be attempted. */
+/* A default implementation for the to_get_ada_task_ptid target method.
-static void
-kill_or_be_killed (int from_tty)
-{
- if (target_has_execution)
- {
- printf_unfiltered (_("You are already running a program:\n"));
- target_files_info ();
- if (query ("Kill it? "))
- {
- target_kill ();
- if (target_has_execution)
- error (_("Killing the program did not help."));
- return;
- }
- else
- {
- error (_("Program not killed."));
- }
- }
- tcomplain ();
-}
+ 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 void
-maybe_kill_then_attach (char *args, int from_tty)
+static ptid_t
+default_get_ada_task_ptid (long lwp, long tid)
{
- kill_or_be_killed (from_tty);
- target_attach (args, from_tty);
+ return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
}
-static void
-maybe_kill_then_create_inferior (char *exec, char *args, char **env,
- int from_tty)
+static enum exec_direction_kind
+default_execution_direction (void)
{
- kill_or_be_killed (0);
- target_create_inferior (exec, args, env, from_tty);
+ if (!target_can_execute_reverse)
+ return EXEC_FORWARD;
+ else if (!target_can_async_p ())
+ return EXEC_FORWARD;
+ else
+ gdb_assert_not_reached ("\
+to_execution_direction must be implemented for reverse async");
}
/* Go through the target stack from top to bottom, copying over zero
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_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_store_registers, t);
+ /* 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_can_use_hw_breakpoint, t);
INHERIT (to_insert_hw_breakpoint, t);
INHERIT (to_remove_hw_breakpoint, t);
+ /* Do not inherit to_ranged_break_num_registers. */
INHERIT (to_insert_watchpoint, t);
INHERIT (to_remove_watchpoint, t);
+ /* Do not inherit to_insert_mask_watchpoint. */
+ /* Do not inherit to_remove_mask_watchpoint. */
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_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);
+ /* Do not inherit to_masked_watch_num_registers. */
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);
- INHERIT (to_kill, t);
+ /* Do not inherit to_kill. */
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);
/* 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_set_syscall_catchpoint, t);
INHERIT (to_has_exited, t);
- INHERIT (to_mourn_inferior, t);
+ /* Do not inherit to_mourn_inferior. */
INHERIT (to_can_run, t);
- INHERIT (to_notice_signals, t);
- INHERIT (to_thread_alive, t);
- INHERIT (to_find_new_threads, t);
- INHERIT (to_pid_to_str, t);
+ /* Do not inherit to_pass_signals. */
+ /* Do not inherit to_program_signals. */
+ /* 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_thread_name, 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_has_stack, t);
- INHERIT (to_has_registers, t);
- INHERIT (to_has_execution, 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_sections, t);
- INHERIT (to_sections_end, 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_find_memory_regions, t);
INHERIT (to_make_corefile_notes, t);
- INHERIT (to_get_thread_local_address, 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_execution_direction, 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_supports_enable_disable_tracepoint, t);
+ INHERIT (to_supports_string_tracing, t);
+ INHERIT (to_trace_init, t);
+ INHERIT (to_download_tracepoint, t);
+ INHERIT (to_can_download_tracepoint, t);
+ INHERIT (to_download_trace_state_variable, t);
+ INHERIT (to_enable_tracepoint, t);
+ INHERIT (to_disable_tracepoint, t);
+ INHERIT (to_trace_set_readonly_regions, t);
+ INHERIT (to_trace_start, t);
+ INHERIT (to_get_trace_status, t);
+ INHERIT (to_get_tracepoint_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_get_min_fast_tracepoint_insn_len, t);
+ INHERIT (to_set_disconnected_tracing, t);
+ INHERIT (to_set_circular_trace_buffer, t);
+ INHERIT (to_set_trace_notes, 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_traceframe_info, t);
+ INHERIT (to_use_agent, t);
+ INHERIT (to_can_use_agent, t);
INHERIT (to_magic, t);
+ INHERIT (to_supports_evaluation_of_breakpoint_conditions, t);
+ INHERIT (to_can_run_breakpoint_commands, t);
/* Do not inherit to_memory_map. */
/* Do not inherit to_flash_erase. */
/* Do not inherit to_flash_done. */
de_fault (to_close,
(void (*) (int))
target_ignore);
- de_fault (to_attach,
- maybe_kill_then_attach);
de_fault (to_post_attach,
(void (*) (int))
target_ignore);
- de_fault (to_detach,
- (void (*) (char *, int))
- target_ignore);
- de_fault (to_resume,
- (void (*) (ptid_t, int, enum target_signal))
- noprocess);
- de_fault (to_wait,
- (ptid_t (*) (ptid_t, struct target_waitstatus *))
- noprocess);
- de_fault (to_fetch_registers,
- (void (*) (struct regcache *, int))
- target_ignore);
- de_fault (to_store_registers,
- (void (*) (struct regcache *, int))
- noprocess);
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 *))
+ (int (*) (CORE_ADDR, gdb_byte *, int, int,
+ struct mem_attrib *, struct target_ops *))
nomemory);
de_fault (to_files_info,
(void (*) (struct target_ops *))
(int (*) (int, int, int))
return_zero);
de_fault (to_insert_hw_breakpoint,
- (int (*) (struct bp_target_info *))
+ (int (*) (struct gdbarch *, struct bp_target_info *))
return_minus_one);
de_fault (to_remove_hw_breakpoint,
- (int (*) (struct bp_target_info *))
+ (int (*) (struct gdbarch *, struct bp_target_info *))
return_minus_one);
de_fault (to_insert_watchpoint,
- (int (*) (CORE_ADDR, int, int))
+ (int (*) (CORE_ADDR, int, int, struct expression *))
return_minus_one);
de_fault (to_remove_watchpoint,
- (int (*) (CORE_ADDR, int, int))
+ (int (*) (CORE_ADDR, int, int, struct expression *))
return_minus_one);
de_fault (to_stopped_by_watchpoint,
(int (*) (void))
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);
target_ignore);
de_fault (to_terminal_info,
default_terminal_info);
- de_fault (to_kill,
- (void (*) (void))
- noprocess);
de_fault (to_load,
(void (*) (char *, int))
tcomplain);
- 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))
target_ignore);
- de_fault (to_acknowledge_created_inferior,
- (void (*) (int))
- target_ignore);
de_fault (to_insert_fork_catchpoint,
- (void (*) (int))
- tcomplain);
+ (int (*) (int))
+ return_one);
de_fault (to_remove_fork_catchpoint,
(int (*) (int))
- tcomplain);
+ return_one);
de_fault (to_insert_vfork_catchpoint,
- (void (*) (int))
- tcomplain);
+ (int (*) (int))
+ return_one);
de_fault (to_remove_vfork_catchpoint,
(int (*) (int))
- tcomplain);
+ return_one);
de_fault (to_insert_exec_catchpoint,
- (void (*) (int))
- tcomplain);
+ (int (*) (int))
+ return_one);
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_set_syscall_catchpoint,
+ (int (*) (int, int, int, int, int *))
return_one);
de_fault (to_has_exited,
(int (*) (int, int, int *))
return_zero);
- de_fault (to_mourn_inferior,
- (void (*) (void))
- noprocess);
de_fault (to_can_run,
return_zero);
- de_fault (to_notice_signals,
- (void (*) (ptid_t))
- target_ignore);
- de_fault (to_thread_alive,
- (int (*) (ptid_t))
- return_zero);
- de_fault (to_find_new_threads,
- (void (*) (void))
- target_ignore);
de_fault (to_extra_thread_info,
(char *(*) (struct thread_info *))
return_zero);
+ de_fault (to_thread_name,
+ (char *(*) (struct thread_info *))
+ return_zero);
de_fault (to_stop,
- (void (*) (void))
+ (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_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,
+ de_fault (to_async,
+ (void (*) (void (*) (enum inferior_event_type, void*), void*))
+ tcomplain);
+ 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_supports_enable_disable_tracepoint,
(int (*) (void))
return_zero);
- de_fault (to_is_async_p,
+ de_fault (to_supports_string_tracing,
(int (*) (void))
return_zero);
- de_fault (to_async,
- (void (*) (void (*) (enum inferior_event_type, void*), void*))
+ de_fault (to_trace_init,
+ (void (*) (void))
tcomplain);
- current_target.to_read_description = NULL;
+ de_fault (to_download_tracepoint,
+ (void (*) (struct bp_location *))
+ tcomplain);
+ de_fault (to_can_download_tracepoint,
+ (int (*) (void))
+ return_zero);
+ de_fault (to_download_trace_state_variable,
+ (void (*) (struct trace_state_variable *))
+ tcomplain);
+ de_fault (to_enable_tracepoint,
+ (void (*) (struct bp_location *))
+ tcomplain);
+ de_fault (to_disable_tracepoint,
+ (void (*) (struct bp_location *))
+ 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_get_tracepoint_status,
+ (void (*) (struct breakpoint *, struct uploaded_tp *))
+ tcomplain);
+ 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_get_min_fast_tracepoint_insn_len,
+ (int (*) (void))
+ return_minus_one);
+ de_fault (to_set_disconnected_tracing,
+ (void (*) (int))
+ target_ignore);
+ de_fault (to_set_circular_trace_buffer,
+ (void (*) (int))
+ target_ignore);
+ de_fault (to_set_trace_notes,
+ (int (*) (char *, char *, char *))
+ return_zero);
+ 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);
+ de_fault (to_traceframe_info,
+ (struct traceframe_info * (*) (void))
+ tcomplain);
+ de_fault (to_supports_evaluation_of_breakpoint_conditions,
+ (int (*) (void))
+ return_zero);
+ de_fault (to_can_run_breakpoint_commands,
+ (int (*) (void))
+ return_zero);
+ de_fault (to_use_agent,
+ (int (*) (int))
+ tcomplain);
+ de_fault (to_can_use_agent,
+ (int (*) (void))
+ return_zero);
+ de_fault (to_execution_direction, default_execution_direction);
+
#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;
-}
-
-/* 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 ();
+ 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.
- Result is zero if the pushed target ended up on top of the stack,
- nonzero if at least one target is on top of it.
-
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. */
-int
+void
push_target (struct target_ops *t)
{
struct target_ops **cur;
fprintf_unfiltered (gdb_stderr,
"Magic number of %s target struct wrong\n",
t->to_shortname);
- internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
+ internal_error (__FILE__, __LINE__,
+ _("failed internal consistency check"));
}
/* Find the proper stratum to install this target in. */
/* 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);
(*cur) = t;
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.
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. */
+ can only occur once in the target stack. */
for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
{
break;
}
+ /* If we don't find target_ops, quit. Only open targets should be
+ closed. */
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);
+ return 0;
- /* Unchain the target */
+ /* Unchain the target. */
tmp = (*cur);
(*cur) = (*cur)->beneath;
tmp->beneath = NULL;
update_current_target ();
+ /* Finally close the target. Note we do this after unchaining, so
+ any target method calls from within the target_close
+ implementation don't end up in T anymore. */
+ target_close (t, 0);
+
return 1;
}
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;
fprintf_unfiltered (gdb_stderr,
"pop_target couldn't find target %s\n",
current_target.to_shortname);
- internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
+ 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 BATON, find the address for the
+/* 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_get_thread_local_address_p ()
- && gdbarch_fetch_tls_load_module_address_p (current_gdbarch))
+ if (target != NULL
+ && gdbarch_fetch_tls_load_module_address_p (target_gdbarch))
{
ptid_t ptid = inferior_ptid;
volatile struct gdb_exception ex;
CORE_ADDR lm_addr;
/* Fetch the load module address for this objfile. */
- lm_addr = gdbarch_fetch_tls_load_module_address (current_gdbarch,
+ 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);
+ 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. */
switch (ex.error)
{
case TLS_NO_LIBRARY_SUPPORT_ERROR:
- error (_("Cannot find thread-local variables in this thread library."));
+ error (_("Cannot find thread-local variables "
+ "in this thread library."));
break;
case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
if (objfile_is_library)
char *bufptr;
unsigned int nbytes_read = 0;
+ gdb_assert (string);
+
/* Small for testing. */
buffer_allocated = 4;
buffer = xmalloc (buffer_allocated);
if (errcode != 0)
{
/* The transfer request might have crossed the boundary to an
- unallocated region of memory. Retry the transfer, requesting
+ unallocated region of memory. Retry the transfer, requesting
a single byte. */
tlen = 1;
offset = 0;
if (bufptr - buffer + tlen > buffer_allocated)
{
unsigned int bytes;
+
bytes = bufptr - buffer;
buffer_allocated *= 2;
buffer = xrealloc (buffer, buffer_allocated);
nbytes_read += tlen;
}
done:
+ *string = buffer;
if (errnop != NULL)
*errnop = errcode;
- if (string != NULL)
- *string = buffer;
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 section_table *
+
+struct target_section *
target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
{
- struct section_table *secp;
- for (secp = target->to_sections;
- secp < target->to_sections_end;
- secp++)
+ 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. The arguments and return
- value are just as for target_xfer_partial. */
+/* Read memory from the live target, even if currently inspecting a
+ traceframe. The return is the same as that of target_read. */
+
+static LONGEST
+target_read_live_memory (enum target_object object,
+ ULONGEST memaddr, gdb_byte *myaddr, LONGEST len)
+{
+ int ret;
+ struct cleanup *cleanup;
+
+ /* Switch momentarily out of tfind mode so to access live memory.
+ Note that this must not clear global state, such as the frame
+ cache, which must still remain valid for the previous traceframe.
+ We may be _building_ the frame cache at this point. */
+ cleanup = make_cleanup_restore_traceframe_number ();
+ set_traceframe_number (-1);
+
+ ret = target_read (current_target.beneath, object, NULL,
+ myaddr, memaddr, len);
+
+ do_cleanups (cleanup);
+ return ret;
+}
+
+/* Using the set of read-only target sections of OPS, read live
+ read-only memory. Note that the actual reads start from the
+ top-most target again.
+
+ For interface/parameters/return description see target.h,
+ to_xfer_partial. */
+
+static LONGEST
+memory_xfer_live_readonly_partial (struct target_ops *ops,
+ enum target_object object,
+ gdb_byte *readbuf, ULONGEST memaddr,
+ LONGEST len)
+{
+ 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))
+ {
+ struct target_section *p;
+ ULONGEST memend = memaddr + len;
+
+ table = target_get_section_table (ops);
+
+ for (p = table->sections; p < table->sections_end; p++)
+ {
+ if (memaddr >= p->addr)
+ {
+ if (memend <= p->endaddr)
+ {
+ /* Entire transfer is within this section. */
+ return target_read_live_memory (object, memaddr,
+ readbuf, len);
+ }
+ else if (memaddr >= p->endaddr)
+ {
+ /* This section ends before the transfer starts. */
+ continue;
+ }
+ else
+ {
+ /* This section overlaps the transfer. Just do half. */
+ len = p->endaddr - memaddr;
+ return target_read_live_memory (object, memaddr,
+ readbuf, len);
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+/* Perform a partial memory transfer.
+ For docs see target.h, to_xfer_partial. */
static LONGEST
-memory_xfer_partial (struct target_ops *ops, void *readbuf, const void *writebuf,
- ULONGEST memaddr, LONGEST len)
+memory_xfer_partial_1 (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 file, if "trust-readonly-sections" is set. */
+ /* Try the executable files, if "trust-readonly-sections" is set. */
if (readbuf != NULL && trust_readonly)
{
- struct section_table *secp;
+ 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))
- return xfer_memory (memaddr, readbuf, len, 0, NULL, ops);
+ {
+ table = target_get_section_table (ops);
+ return section_table_xfer_memory_partial (readbuf, writebuf,
+ memaddr, len,
+ table->sections,
+ table->sections_end,
+ NULL);
+ }
}
- /* Likewise for accesses to unmapped overlay sections. */
- if (readbuf != NULL && overlay_debugging)
+ /* If reading unavailable memory in the context of traceframes, and
+ this address falls within a read-only section, fallback to
+ reading from live memory. */
+ if (readbuf != NULL && get_traceframe_number () != -1)
{
- asection *section = find_pc_overlay (memaddr);
- if (pc_in_unmapped_range (memaddr, section))
- return xfer_memory (memaddr, readbuf, len, 0, NULL, ops);
+ VEC(mem_range_s) *available;
+
+ /* If we fail to get the set of available memory, then the
+ target does not support querying traceframe info, and so we
+ attempt reading from the traceframe anyway (assuming the
+ target implements the old QTro packet then). */
+ if (traceframe_available_memory (&available, memaddr, len))
+ {
+ struct cleanup *old_chain;
+
+ old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
+
+ if (VEC_empty (mem_range_s, available)
+ || VEC_index (mem_range_s, available, 0)->start != memaddr)
+ {
+ /* Don't read into the traceframe's available
+ memory. */
+ if (!VEC_empty (mem_range_s, available))
+ {
+ LONGEST oldlen = len;
+
+ len = VEC_index (mem_range_s, available, 0)->start - memaddr;
+ gdb_assert (len <= oldlen);
+ }
+
+ do_cleanups (old_chain);
+
+ /* This goes through the topmost target again. */
+ res = memory_xfer_live_readonly_partial (ops, object,
+ readbuf, memaddr, len);
+ if (res > 0)
+ return res;
+
+ /* No use trying further, we know some memory starting
+ at MEMADDR isn't available. */
+ return -1;
+ }
+
+ /* Don't try to read more than how much is available, in
+ case the target implements the deprecated QTro packet to
+ cater for older GDBs (the target's knowledge of read-only
+ sections may be outdated by now). */
+ len = VEC_index (mem_range_s, available, 0)->length;
+
+ do_cleanups (old_chain);
+ }
}
/* Try GDB's internal data cache. */
return -1;
}
- if (region->attrib.cache)
+ 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)))
{
- /* 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,
+ 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 (target_dcache, memaddr,
+ res = dcache_xfer_memory (ops, target_dcache, memaddr,
(void *) writebuf,
reg_len, 1);
if (res <= 0)
res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
readbuf, writebuf, memaddr, reg_len);
if (res > 0)
- return res;
+ break;
/* We want to continue past core files to executables, but not
past a running target's memory. */
- if (ops->to_has_all_memory)
- return res;
+ if (ops->to_has_all_memory (ops))
+ break;
ops = ops->beneath;
}
while (ops != NULL);
+ /* 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;
}
+/* 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)
+{
+ int res;
+
+ /* Zero length requests are ok and require no work. */
+ if (len == 0)
+ return 0;
+
+ /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
+ breakpoint insns, thus hiding out from higher layers whether
+ there are software breakpoints inserted in the code stream. */
+ if (readbuf != NULL)
+ {
+ res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len);
+
+ if (res > 0 && !show_memory_breakpoints)
+ breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res);
+ }
+ else
+ {
+ void *buf;
+ struct cleanup *old_chain;
+
+ buf = xmalloc (len);
+ old_chain = make_cleanup (xfree, buf);
+ memcpy (buf, writebuf, len);
+
+ breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len);
+ res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len);
+
+ do_cleanups (old_chain);
+ }
+
+ 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,
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)
- retval = memory_xfer_partial (ops, readbuf, writebuf, offset, len);
+ 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;
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;
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)
{
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). */
+ it makes no progress, and then return how much was transferred). */
+
+int
+target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t 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_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len)
+target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
{
- if (target_read (¤t_target, TARGET_OBJECT_MEMORY, NULL,
+ /* 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, ssize_t 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;
+}
+
+/* Write LEN bytes from MYADDR to target raw 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)
+target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
{
- if (target_write (¤t_target, TARGET_OBJECT_MEMORY, NULL,
+ /* 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_RAW_MEMORY, NULL,
myaddr, memaddr, len) == len)
return 0;
else
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",
- paddr (address), phex (length, 0));
- t->to_flash_erase (t, address, length);
- return;
- }
+ {
+ 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 ();
}
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;
- }
+ {
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog, "target_flash_done\n");
+ t->to_flash_done (t);
+ return;
+ }
tcomplain ();
}
-#ifndef target_stopped_data_address_p
-int
-target_stopped_data_address_p (struct target_ops *target)
-{
- 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
-
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"),
+ fprintf_filtered (file,
+ _("Mode for reading from readonly sections is %s.\n"),
value);
}
"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);
+ 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;
}
-/* Target vector read/write partial wrapper functions.
-
- NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial
- (inbuf, outbuf)", instead of separate read/write methods, make life
- easier. */
+/* Target vector read/write partial wrapper functions. */
static LONGEST
target_read_partial (struct target_ops *ops,
}
/* 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,
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;
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 returns, 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)
+ {
+ xfree (buf);
+ 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
+ {
+ xfree (buf);
+ 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
return len;
}
+/* For docs on target_write see target.h. */
+
LONGEST
target_write (struct target_ops *ops,
enum target_object object,
const char *annex)
{
gdb_byte *buffer;
- LONGEST transferred;
+ LONGEST i, transferred;
transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1);
return xstrdup ("");
buffer[transferred] = 0;
- if (strlen (buffer) < transferred)
- warning (_("target object %d, annex %s, "
- "contained unexpected null characters"),
- (int) object, annex ? annex : "(none)");
+
+ /* Check for embedded NUL bytes; but allow trailing NULs. */
+ for (i = strlen (buffer); i < transferred; i++)
+ if (buffer[i] != 0)
+ {
+ warning (_("target object %d, annex %s, "
+ "contained unexpected null characters"),
+ (int) object, annex ? annex : "(none)");
+ break;
+ }
return (char *) buffer;
}
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)
+ /* 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)
+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);
+ 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
for (t = target_stack; t != NULL; t = t->beneath)
{
- if (!t->to_has_memory)
+ 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 (_("\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;
+ has_all_mem = (*t->to_has_all_memory) (t);
}
}
void
target_pre_inferior (int from_tty)
{
- invalidate_target_mem_regions ();
+ /* 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 ();
+ }
+
+ agent_capability_invalidate ();
+}
+
+/* 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);
+ }
- target_clear_description ();
+ return 0;
}
/* This is to be called by the open routine before it does
{
dont_repeat ();
- if (target_has_execution)
+ if (have_inferiors ())
{
if (!from_tty
- || query (_("A program is being debugged already. Kill it? ")))
- target_kill ();
+ || !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. */
-
- if (target_has_execution)
- pop_target ();
+ /* 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);
}
void
target_detach (char *args, int from_tty)
{
- (current_target.to_detach) (args, 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
{
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)
{
tcomplain ();
}
-int
-target_async_mask (int mask)
+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;
+ char *options_string;
+
+ status_string = target_waitstatus_to_string (status);
+ options_string = target_options_to_string (options);
+ fprintf_unfiltered (gdb_stdlog,
+ "target_wait (%d, status, options={%s})"
+ " = %d, %s\n",
+ PIDGET (ptid), options_string,
+ PIDGET (retval), status_string);
+ xfree (status_string);
+ xfree (options_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);
+}
+
+char *
+target_thread_name (struct thread_info *info)
+{
+ struct target_ops *t;
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ {
+ if (t->to_thread_name != NULL)
+ return (*t->to_thread_name) (info);
+ }
+
+ return NULL;
+}
+
+void
+target_resume (ptid_t ptid, int step, enum gdb_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",
+ gdb_signal_to_name (signal));
+
+ registers_changed_ptid (ptid);
+ set_executing (ptid, 1);
+ set_running (ptid, 1);
+ clear_inline_frame_state (ptid);
+ return;
+ }
+ }
+
+ noprocess ();
+}
+
+void
+target_pass_signals (int numsigs, unsigned char *pass_signals)
+{
+ struct target_ops *t;
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ {
+ if (t->to_pass_signals != NULL)
+ {
+ if (targetdebug)
+ {
+ int i;
+
+ fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {",
+ numsigs);
+
+ for (i = 0; i < numsigs; i++)
+ if (pass_signals[i])
+ fprintf_unfiltered (gdb_stdlog, " %s",
+ gdb_signal_to_name (i));
+
+ fprintf_unfiltered (gdb_stdlog, " })\n");
+ }
+
+ (*t->to_pass_signals) (numsigs, pass_signals);
+ return;
+ }
+ }
+}
+
+void
+target_program_signals (int numsigs, unsigned char *program_signals)
{
- 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 = current_target.beneath; t != NULL; t = t->beneath)
+ {
+ if (t->to_program_signals != NULL)
+ {
+ if (targetdebug)
+ {
+ int i;
+
+ fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {",
+ numsigs);
+
+ for (i = 0; i < numsigs; i++)
+ if (program_signals[i])
+ fprintf_unfiltered (gdb_stdlog, " %s",
+ gdb_signal_to_name (i));
+
+ fprintf_unfiltered (gdb_stdlog, " })\n");
+ }
+
+ (*t->to_program_signals) (numsigs, program_signals);
+ return;
+ }
+ }
}
/* Look through the list of possible targets for a target that can
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);
/* 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");
+ _("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
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 %s bytes of target "
+ "memory at %s, halting search."),
+ pulongest (search_buf_size), 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 %s bytes of target "
+ "memory at %s, halting search."),
+ plongest (nr_to_read),
+ 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.
- 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;
}
static int
-default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
+find_default_can_async_p (void)
{
- return (len <= TYPE_LENGTH (builtin_type_void_data_ptr));
+ 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
-return_zero (void)
+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
-return_one (void)
+find_default_supports_non_stop (void)
{
- return 1;
+ 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;
}
-static int
-return_minus_one (void)
+int
+target_supports_non_stop (void)
{
- return -1;
+ 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;
}
-/*
- * Resize the to_sections pointer. Also make sure that anyone that
- * was holding on to an old value of it gets updated.
- * Returns the old size.
- */
+/* Implement the "info proc" command. */
-int
-target_resize_to_sections (struct target_ops *target, int num_added)
+void
+target_info_proc (char *args, enum info_proc_what what)
{
- struct target_ops **t;
- struct section_table *old_value;
- int old_count;
-
- old_value = target->to_sections;
+ struct target_ops *t;
- if (target->to_sections)
- {
- old_count = target->to_sections_end - target->to_sections;
- target->to_sections = (struct section_table *)
- xrealloc ((char *) target->to_sections,
- (sizeof (struct section_table)) * (num_added + old_count));
- }
+ /* 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
- {
- old_count = 0;
- target->to_sections = (struct section_table *)
- xmalloc ((sizeof (struct section_table)) * num_added);
- }
- target->to_sections_end = target->to_sections + (num_added + old_count);
-
- /* Check to see if anyone else was pointing to this structure.
- If old_value was null, then no one was. */
+ t = find_default_run_target (NULL);
- if (old_value)
+ for (; t != NULL; t = t->beneath)
{
- for (t = target_structs; t < target_structs + target_struct_size;
- ++t)
- {
- if ((*t)->to_sections == old_value)
- {
- (*t)->to_sections = target->to_sections;
- (*t)->to_sections_end = target->to_sections_end;
- }
- }
- /* There is a flattened view of the target stack in current_target,
- so its to_sections pointer might also need updating. */
- if (current_target.to_sections == old_value)
+ if (t->to_info_proc != NULL)
{
- current_target.to_sections = target->to_sections;
- current_target.to_sections_end = target->to_sections_end;
+ t->to_info_proc (t, args, what);
+
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog,
+ "target_info_proc (\"%s\", %d)\n", args, what);
+
+ return;
}
}
- return old_count;
-
+ error (_("Not supported on this target."));
}
-/* Remove all target sections taken from ABFD.
-
- Scan the current target stack for targets whose section tables
- refer to sections from BFD, and remove those sections. We use this
- when we notice that the inferior has unloaded a shared object, for
- example. */
-void
-remove_target_sections (bfd *abfd)
+static int
+find_default_supports_disable_randomization (void)
{
- struct target_ops **t;
+ struct target_ops *t;
- for (t = target_structs; t < target_structs + target_struct_size; t++)
- {
- struct section_table *src, *dest;
+ t = find_default_run_target (NULL);
+ if (t && t->to_supports_disable_randomization)
+ return (t->to_supports_disable_randomization) ();
+ return 0;
+}
+
+int
+target_supports_disable_randomization (void)
+{
+ struct target_ops *t;
- dest = (*t)->to_sections;
- for (src = (*t)->to_sections; src < (*t)->to_sections_end; src++)
- if (src->bfd != abfd)
- {
- /* Keep this section. */
- if (dest < src) *dest = *src;
- dest++;
- }
+ for (t = ¤t_target; t != NULL; t = t->beneath)
+ if (t->to_supports_disable_randomization)
+ return t->to_supports_disable_randomization ();
- /* If we've dropped any sections, resize the section table. */
- if (dest < src)
- target_resize_to_sections (*t, dest - src);
- }
+ 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);
+}
-/* Find a single runnable target in the stack and return it. If for
- some reason there is more than one, return NULL. */
+/* Determine the current address space of thread PTID. */
-struct target_ops *
-find_run_target (void)
+struct address_space *
+target_thread_address_space (ptid_t ptid)
{
- struct target_ops **t;
- struct target_ops *runable = NULL;
- int count;
-
- count = 0;
+ struct address_space *aspace;
+ struct inferior *inf;
+ struct target_ops *t;
- for (t = target_structs; t < target_structs + target_struct_size; ++t)
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
{
- if ((*t)->to_can_run && target_can_run (*t))
+ if (t->to_thread_address_space != NULL)
{
- runable = *t;
- ++count;
+ 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;
}
}
- return (count == 1 ? runable : NULL);
+ /* 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;
}
-/* Find a single core_stratum target in the list of targets and return it.
- If for some reason there is more than one, return NULL. */
-struct target_ops *
-find_core_target (void)
+/* Target file operations. */
+
+static struct target_ops *
+default_fileio_target (void)
{
- struct target_ops **t;
- struct target_ops *runable = NULL;
- int count;
+ /* If we're already connected to something that can perform
+ file I/O, use it. Otherwise, try using the native target. */
+ if (current_target.to_stratum >= process_stratum)
+ return current_target.beneath;
+ else
+ return find_default_run_target ("file I/O");
+}
- count = 0;
+/* Open FILENAME on the target, using FLAGS and MODE. Return a
+ target file descriptor, or -1 if an error occurs (and set
+ *TARGET_ERRNO). */
+int
+target_fileio_open (const char *filename, int flags, int mode,
+ int *target_errno)
+{
+ struct target_ops *t;
- for (t = target_structs; t < target_structs + target_struct_size;
- ++t)
+ for (t = default_fileio_target (); t != NULL; t = t->beneath)
{
- if ((*t)->to_stratum == core_stratum)
+ if (t->to_fileio_open != NULL)
{
- runable = *t;
- ++count;
+ int fd = t->to_fileio_open (filename, flags, mode, target_errno);
+
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog,
+ "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
+ filename, flags, mode,
+ fd, fd != -1 ? 0 : *target_errno);
+ return fd;
}
}
- return (count == 1 ? runable : NULL);
+ *target_errno = FILEIO_ENOSYS;
+ return -1;
}
-/*
- * Find the next target down the stack from the specified target.
- */
-
-struct target_ops *
-find_target_beneath (struct target_ops *t)
+/* Write up to LEN bytes from WRITE_BUF to FD on the target.
+ Return the number of bytes written, or -1 if an error occurs
+ (and set *TARGET_ERRNO). */
+int
+target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
+ ULONGEST offset, int *target_errno)
{
- return t->beneath;
-}
+ struct target_ops *t;
-\f
-/* The inferior process has died. Long live the inferior! */
+ for (t = default_fileio_target (); t != NULL; t = t->beneath)
+ {
+ if (t->to_fileio_pwrite != NULL)
+ {
+ int ret = t->to_fileio_pwrite (fd, write_buf, len, offset,
+ target_errno);
-void
-generic_mourn_inferior (void)
-{
- extern int show_breakpoint_hit_counts;
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog,
+ "target_fileio_pwrite (%d,...,%d,%s) "
+ "= %d (%d)\n",
+ fd, len, pulongest (offset),
+ ret, ret != -1 ? 0 : *target_errno);
+ return ret;
+ }
+ }
- inferior_ptid = null_ptid;
- attach_flag = 0;
- breakpoint_init_inferior (inf_exited);
- registers_changed ();
+ *target_errno = FILEIO_ENOSYS;
+ return -1;
+}
- reopen_exec_file ();
- reinit_frame_cache ();
+/* Read up to LEN bytes FD on the target into READ_BUF.
+ Return the number of bytes read, or -1 if an error occurs
+ (and set *TARGET_ERRNO). */
+int
+target_fileio_pread (int fd, gdb_byte *read_buf, int len,
+ ULONGEST offset, int *target_errno)
+{
+ struct target_ops *t;
- /* 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 ();
+ for (t = default_fileio_target (); t != NULL; t = t->beneath)
+ {
+ if (t->to_fileio_pread != NULL)
+ {
+ int ret = t->to_fileio_pread (fd, read_buf, len, offset,
+ target_errno);
- if (deprecated_detach_hook)
- deprecated_detach_hook ();
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog,
+ "target_fileio_pread (%d,...,%d,%s) "
+ "= %d (%d)\n",
+ fd, len, pulongest (offset),
+ ret, ret != -1 ? 0 : *target_errno);
+ return ret;
+ }
+ }
+
+ *target_errno = FILEIO_ENOSYS;
+ return -1;
}
-\f
-/* 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)
+
+/* Close FD on the target. Return 0, or -1 if an error occurs
+ (and set *TARGET_ERRNO). */
+int
+target_fileio_close (int fd, int *target_errno)
{
- 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
+ struct target_ops *t;
+
+ for (t = default_fileio_target (); t != NULL; t = t->beneath)
{
- ourstatus->kind = TARGET_WAITKIND_STOPPED;
- ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus));
+ if (t->to_fileio_close != NULL)
+ {
+ int ret = t->to_fileio_close (fd, target_errno);
+
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog,
+ "target_fileio_close (%d) = %d (%d)\n",
+ fd, ret, ret != -1 ? 0 : *target_errno);
+ return ret;
+ }
}
+
+ *target_errno = FILEIO_ENOSYS;
+ return -1;
}
-\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. */
-char *
-normal_pid_to_str (ptid_t ptid)
+/* Unlink FILENAME on the target. Return 0, or -1 if an error
+ occurs (and set *TARGET_ERRNO). */
+int
+target_fileio_unlink (const char *filename, int *target_errno)
{
- static char buf[32];
+ struct target_ops *t;
- xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
- return buf;
-}
+ for (t = default_fileio_target (); t != NULL; t = t->beneath)
+ {
+ if (t->to_fileio_unlink != NULL)
+ {
+ int ret = t->to_fileio_unlink (filename, target_errno);
-/* Error-catcher for target_find_memory_regions */
-static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2)
-{
- error (_("No target."));
- return 0;
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog,
+ "target_fileio_unlink (%s) = %d (%d)\n",
+ filename, ret, ret != -1 ? 0 : *target_errno);
+ return ret;
+ }
+ }
+
+ *target_errno = FILEIO_ENOSYS;
+ return -1;
}
-/* Error-catcher for target_make_corefile_notes */
-static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2)
+/* Read value of symbolic link FILENAME on the target. Return a
+ null-terminated string allocated via xmalloc, or NULL if an error
+ occurs (and set *TARGET_ERRNO). */
+char *
+target_fileio_readlink (const char *filename, int *target_errno)
{
- error (_("No target."));
- return NULL;
-}
+ struct target_ops *t;
-/* Set up the handful of non-empty slots needed by the dummy target
- vector. */
+ for (t = default_fileio_target (); t != NULL; t = t->beneath)
+ {
+ if (t->to_fileio_readlink != NULL)
+ {
+ char *ret = t->to_fileio_readlink (filename, target_errno);
+
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog,
+ "target_fileio_readlink (%s) = %s (%d)\n",
+ filename, ret? ret : "(nil)",
+ ret? 0 : *target_errno);
+ return ret;
+ }
+ }
+
+ *target_errno = FILEIO_ENOSYS;
+ return NULL;
+}
+
+static void
+target_fileio_close_cleanup (void *opaque)
+{
+ int fd = *(int *) opaque;
+ int target_errno;
+
+ target_fileio_close (fd, &target_errno);
+}
+
+/* Read target file FILENAME. 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_fileio_read_alloc; see the declaration of that function for more
+ information. */
+
+static LONGEST
+target_fileio_read_alloc_1 (const char *filename,
+ gdb_byte **buf_p, int padding)
+{
+ struct cleanup *close_cleanup;
+ size_t buf_alloc, buf_pos;
+ gdb_byte *buf;
+ LONGEST n;
+ int fd;
+ int target_errno;
+
+ fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno);
+ if (fd == -1)
+ return -1;
+
+ close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd);
+
+ /* 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_fileio_pread (fd, &buf[buf_pos],
+ buf_alloc - buf_pos - padding, buf_pos,
+ &target_errno);
+ if (n < 0)
+ {
+ /* An error occurred. */
+ do_cleanups (close_cleanup);
+ xfree (buf);
+ return -1;
+ }
+ else if (n == 0)
+ {
+ /* Read all there was. */
+ do_cleanups (close_cleanup);
+ 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 target file FILENAME. 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_fileio_read_alloc (const char *filename, gdb_byte **buf_p)
+{
+ return target_fileio_read_alloc_1 (filename, buf_p, 0);
+}
+
+/* Read target file FILENAME. 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_fileio_read_stralloc (const char *filename)
+{
+ gdb_byte *buffer;
+ LONGEST i, transferred;
+
+ transferred = target_fileio_read_alloc_1 (filename, &buffer, 1);
+
+ if (transferred < 0)
+ return NULL;
+
+ if (transferred == 0)
+ return xstrdup ("");
+
+ buffer[transferred] = 0;
+
+ /* Check for embedded NUL bytes; but allow trailing NULs. */
+ for (i = strlen (buffer); i < transferred; i++)
+ if (buffer[i] != 0)
+ {
+ warning (_("target file %s "
+ "contained unexpected null characters"),
+ filename);
+ break;
+ }
+
+ return (char *) buffer;
+}
+
+
+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;
+}
+
+\f
+/* The inferior process has died. Long live the inferior! */
+
+void
+generic_mourn_inferior (void)
+{
+ ptid_t ptid;
+
+ ptid = inferior_ptid;
+ inferior_ptid = null_ptid;
+
+ /* Mark breakpoints uninserted in case something tries to delete a
+ breakpoint while we delete the inferior's threads (which would
+ fail, since the inferior is long gone). */
+ mark_breakpoints_out ();
+
+ if (!ptid_equal (ptid, null_ptid))
+ {
+ int pid = ptid_get_pid (ptid);
+ exit_inferior (pid);
+ }
+
+ /* Note this wipes step-resume breakpoints, so needs to be done
+ after exit_inferior, which ends up referencing the step-resume
+ breakpoints through clear_thread_inferior_resources. */
+ breakpoint_init_inferior (inf_exited);
+
+ registers_changed ();
+
+ reopen_exec_file ();
+ reinit_frame_cache ();
+
+ if (deprecated_detach_hook)
+ deprecated_detach_hook ();
+}
+\f
+/* 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_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_pid_to_str = normal_pid_to_str;
+ 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_supports_disable_randomization
+ = find_default_supports_disable_randomization;
+ 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 *, ptid_t)) 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;
}
\f
{
debug_target.to_open (args, from_tty);
- fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", 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, gdb_signal_to_name (ws->value.sig));
+ case TARGET_WAITKIND_SIGNALLED:
+ return xstrprintf ("%ssignalled, signal = %s",
+ kind_str, gdb_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_VFORK_DONE:
+ return xstrprintf ("%svfork-done", 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);
+ case TARGET_WAITKIND_NO_RESUMED:
+ return xstrprintf ("%sno-resumed", kind_str);
+ default:
+ return xstrprintf ("%sunknown???", kind_str);
+ }
+}
+
+/* Concatenate ELEM to LIST, a comma separate list, and return the
+ result. The LIST incoming argument is released. */
+
+static char *
+str_comma_list_concat_elem (char *list, const char *elem)
+{
+ if (list == NULL)
+ return xstrdup (elem);
+ else
+ return reconcat (list, list, ", ", elem, (char *) NULL);
+}
+
+/* Helper for target_options_to_string. If OPT is present in
+ TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
+ Returns the new resulting string. OPT is removed from
+ TARGET_OPTIONS. */
+
+static char *
+do_option (int *target_options, char *ret,
+ int opt, char *opt_str)
+{
+ if ((*target_options & opt) != 0)
+ {
+ ret = str_comma_list_concat_elem (ret, opt_str);
+ *target_options &= ~opt;
+ }
+
+ return ret;
+}
+
+char *
+target_options_to_string (int target_options)
+{
+ char *ret = NULL;
+
+#define DO_TARG_OPTION(OPT) \
+ ret = do_option (&target_options, ret, OPT, #OPT)
+
+ DO_TARG_OPTION (TARGET_WNOHANG);
+
+ if (target_options != 0)
+ ret = str_comma_list_concat_elem (ret, "unknown???");
+
+ if (ret == NULL)
+ ret = xstrdup ("");
+ return ret;
+}
+
+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;
}
-static void
-debug_to_close (int quitting)
+int
+target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
{
- target_close (&debug_target, quitting);
- fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting);
-}
+ struct target_ops *t;
-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);
-}
+ 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);
-static void
-debug_to_attach (char *args, int from_tty)
-{
- debug_target.to_attach (args, from_tty);
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog,
+ "target_verify_memory (%s, %s) = %d\n",
+ paddress (target_gdbarch, memaddr),
+ pulongest (size),
+ retval);
+ return retval;
+ }
+ }
- fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", args, from_tty);
+ tcomplain ();
}
+/* The documentation for this function is in its prototype declaration in
+ target.h. */
-static void
-debug_to_post_attach (int pid)
+int
+target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
{
- debug_target.to_post_attach (pid);
+ struct target_ops *t;
- fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid);
-}
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_insert_mask_watchpoint != NULL)
+ {
+ int ret;
-static void
-debug_to_detach (char *args, int from_tty)
-{
- debug_target.to_detach (args, from_tty);
+ ret = t->to_insert_mask_watchpoint (t, addr, mask, rw);
- fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", args, from_tty);
-}
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog, "\
+target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
+ core_addr_to_string (addr),
+ core_addr_to_string (mask), rw, ret);
-static void
-debug_to_resume (ptid_t ptid, int step, enum target_signal siggnal)
-{
- debug_target.to_resume (ptid, step, siggnal);
+ return ret;
+ }
- fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", PIDGET (ptid),
- step ? "step" : "continue",
- target_signal_to_name (siggnal));
+ return 1;
}
-static ptid_t
-debug_to_wait (ptid_t ptid, struct target_waitstatus *status)
+/* The documentation for this function is in its prototype declaration in
+ target.h. */
+
+int
+target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw)
{
- ptid_t retval;
+ struct target_ops *t;
- retval = debug_target.to_wait (ptid, status);
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_remove_mask_watchpoint != NULL)
+ {
+ int ret;
- fprintf_unfiltered (gdb_stdlog,
- "target_wait (%d, status) = %d, ", PIDGET (ptid),
- PIDGET (retval));
- fprintf_unfiltered (gdb_stdlog, "status->kind = ");
- switch (status->kind)
- {
- case TARGET_WAITKIND_EXITED:
- fprintf_unfiltered (gdb_stdlog, "exited, status = %d\n",
- status->value.integer);
- break;
- case TARGET_WAITKIND_STOPPED:
- fprintf_unfiltered (gdb_stdlog, "stopped, signal = %s\n",
- target_signal_to_name (status->value.sig));
- break;
- case TARGET_WAITKIND_SIGNALLED:
- fprintf_unfiltered (gdb_stdlog, "signalled, signal = %s\n",
- target_signal_to_name (status->value.sig));
- break;
- case TARGET_WAITKIND_LOADED:
- fprintf_unfiltered (gdb_stdlog, "loaded\n");
- break;
- case TARGET_WAITKIND_FORKED:
- fprintf_unfiltered (gdb_stdlog, "forked\n");
- break;
- case TARGET_WAITKIND_VFORKED:
- fprintf_unfiltered (gdb_stdlog, "vforked\n");
- break;
- case TARGET_WAITKIND_EXECD:
- fprintf_unfiltered (gdb_stdlog, "execd\n");
- break;
- case TARGET_WAITKIND_SPURIOUS:
- fprintf_unfiltered (gdb_stdlog, "spurious\n");
- break;
- default:
- fprintf_unfiltered (gdb_stdlog, "unknown???\n");
- break;
- }
+ ret = t->to_remove_mask_watchpoint (t, addr, mask, rw);
- return retval;
-}
+ if (targetdebug)
+ fprintf_unfiltered (gdb_stdlog, "\
+target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
+ core_addr_to_string (addr),
+ core_addr_to_string (mask), rw, ret);
-static void
-debug_print_register (const char * func,
- struct regcache *regcache, int regno)
-{
- fprintf_unfiltered (gdb_stdlog, "%s ", func);
- if (regno >= 0 && regno < gdbarch_num_regs (current_gdbarch)
- + gdbarch_num_pseudo_regs (current_gdbarch)
- && gdbarch_register_name (current_gdbarch, regno) != NULL
- && gdbarch_register_name (current_gdbarch, regno)[0] != '\0')
- fprintf_unfiltered (gdb_stdlog, "(%s)", gdbarch_register_name
- (current_gdbarch, regno));
- else
- fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
- if (regno >= 0)
- {
- int i, size = register_size (current_gdbarch, regno);
- unsigned char buf[MAX_REGISTER_SIZE];
- regcache_cooked_read (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);
- fprintf_unfiltered (gdb_stdlog, " 0x%s %s",
- paddr_nz (val), paddr_d (val));
- }
- }
- fprintf_unfiltered (gdb_stdlog, "\n");
+ return ret;
+ }
+
+ return 1;
}
-static void
-debug_to_fetch_registers (struct regcache *regcache, int regno)
+/* The documentation for this function is in its prototype declaration
+ in target.h. */
+
+int
+target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
{
- debug_target.to_fetch_registers (regcache, regno);
- debug_print_register ("target_fetch_registers", regcache, regno);
+ struct target_ops *t;
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_masked_watch_num_registers != NULL)
+ return t->to_masked_watch_num_registers (t, addr, mask);
+
+ return -1;
}
-static void
-debug_to_store_registers (struct regcache *regcache, int regno)
+/* The documentation for this function is in its prototype declaration
+ in target.h. */
+
+int
+target_ranged_break_num_registers (void)
{
- debug_target.to_store_registers (regcache, regno);
- debug_print_register ("target_store_registers", regcache, regno);
- fprintf_unfiltered (gdb_stdlog, "\n");
+ struct target_ops *t;
+
+ for (t = current_target.beneath; t != NULL; t = t->beneath)
+ if (t->to_ranged_break_num_registers != NULL)
+ return t->to_ranged_break_num_registers (t);
+
+ return -1;
}
static void
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 (target_gdbarch, 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)
{
}
static int
-debug_to_insert_breakpoint (struct bp_target_info *bp_tgt)
+debug_to_insert_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_insert_breakpoint (bp_tgt);
+ retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt);
fprintf_unfiltered (gdb_stdlog,
- "target_insert_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) bp_tgt->placed_address,
+ "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 bp_target_info *bp_tgt)
+debug_to_remove_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_remove_breakpoint (bp_tgt);
+ retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt);
fprintf_unfiltered (gdb_stdlog,
- "target_remove_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) bp_tgt->placed_address,
+ "target_remove_breakpoint (%s, xxx) = %ld\n",
+ core_addr_to_string (bp_tgt->placed_address),
(unsigned long) retval);
return retval;
}
retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len);
fprintf_unfiltered (gdb_stdlog,
- "TARGET_REGION_OK_FOR_HW_WATCHPOINT (%ld, %ld) = 0x%lx\n",
- (unsigned long) addr,
- (unsigned long) len,
- (unsigned long) retval);
+ "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;
}
retval = debug_target.to_stopped_by_watchpoint ();
fprintf_unfiltered (gdb_stdlog,
- "STOPPED_BY_WATCHPOINT () = %ld\n",
+ "target_stopped_by_watchpoint () = %ld\n",
(unsigned long) retval);
return retval;
}
retval = debug_target.to_stopped_data_address (target, addr);
fprintf_unfiltered (gdb_stdlog,
- "target_stopped_data_address ([0x%lx]) = %ld\n",
- (unsigned long)*addr,
+ "target_stopped_data_address ([%s]) = %ld\n",
+ core_addr_to_string (*addr),
(unsigned long)retval);
return retval;
}
static int
-debug_to_insert_hw_breakpoint (struct bp_target_info *bp_tgt)
+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 (bp_tgt);
+ retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt);
fprintf_unfiltered (gdb_stdlog,
- "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) bp_tgt->placed_address,
+ "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 bp_target_info *bp_tgt)
+debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_remove_hw_breakpoint (bp_tgt);
+ retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt);
fprintf_unfiltered (gdb_stdlog,
- "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) bp_tgt->placed_address,
+ "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)
+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);
+ retval = debug_target.to_insert_watchpoint (addr, len, type, cond);
fprintf_unfiltered (gdb_stdlog,
- "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n",
- (unsigned long) addr, len, type, (unsigned long) retval);
+ "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)
+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);
+ retval = debug_target.to_remove_watchpoint (addr, len, type, cond);
fprintf_unfiltered (gdb_stdlog,
- "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n",
- (unsigned long) addr, len, type, (unsigned long) retval);
+ "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;
}
from_tty);
}
-static void
-debug_to_kill (void)
-{
- debug_target.to_kill ();
-
- fprintf_unfiltered (gdb_stdlog, "target_kill ()\n");
-}
-
static void
debug_to_load (char *args, int 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_create_inferior (char *exec_file, char *args, char **env,
- int from_tty)
-{
- debug_target.to_create_inferior (exec_file, args, env, from_tty);
-
- fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx, %d)\n",
- exec_file, args, from_tty);
-}
-
static void
debug_to_post_startup_inferior (ptid_t ptid)
{
PIDGET (ptid));
}
-static void
-debug_to_acknowledge_created_inferior (int pid)
+static int
+debug_to_insert_fork_catchpoint (int pid)
{
- debug_target.to_acknowledge_created_inferior (pid);
+ int retval;
- fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n",
- pid);
-}
+ retval = debug_target.to_insert_fork_catchpoint (pid);
-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) = %d\n",
+ pid, retval);
- fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d)\n",
- pid);
+ return retval;
}
static int
return retval;
}
-static void
+static int
debug_to_insert_vfork_catchpoint (int pid)
{
- debug_target.to_insert_vfork_catchpoint (pid);
+ int retval;
- fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)\n",
- pid);
+ retval = debug_target.to_insert_vfork_catchpoint (pid);
+
+ fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n",
+ pid, retval);
+
+ return retval;
}
static int
return retval;
}
-static void
+static int
debug_to_insert_exec_catchpoint (int pid)
{
- debug_target.to_insert_exec_catchpoint (pid);
+ int retval;
+
+ retval = debug_target.to_insert_exec_catchpoint (pid);
- fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d)\n",
- pid);
+ fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n",
+ pid, retval);
+
+ return retval;
}
static int
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)
{
return has_exited;
}
-static void
-debug_to_mourn_inferior (void)
-{
- debug_target.to_mourn_inferior ();
-
- fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n");
-}
-
static int
debug_to_can_run (void)
{
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 int
-debug_to_thread_alive (ptid_t ptid)
+static struct gdbarch *
+debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid)
{
- int retval;
-
- retval = debug_target.to_thread_alive (ptid);
+ struct gdbarch *retval;
- fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n",
- PIDGET (ptid), 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_find_new_threads (void)
+debug_to_stop (ptid_t ptid)
{
- debug_target.to_find_new_threads ();
+ debug_target.to_stop (ptid);
- fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog);
-}
-
-static void
-debug_to_stop (void)
-{
- debug_target.to_stop ();
-
- 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)
{
memcpy (&debug_target, ¤t_target, sizeof debug_target);
current_target.to_open = debug_to_open;
- current_target.to_close = debug_to_close;
- 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_resume = debug_to_resume;
- current_target.to_wait = debug_to_wait;
- current_target.to_fetch_registers = debug_to_fetch_registers;
- current_target.to_store_registers = debug_to_store_registers;
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_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_ok_for_hw_watchpoint = debug_to_region_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_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_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_kill = debug_to_kill;
current_target.to_load = debug_to_load;
- current_target.to_lookup_symbol = debug_to_lookup_symbol;
- current_target.to_create_inferior = debug_to_create_inferior;
current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
- current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_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_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_notice_signals = debug_to_notice_signals;
- current_target.to_thread_alive = debug_to_thread_alive;
- 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;
+ current_target.to_thread_architecture = debug_to_thread_architecture;
}
\f
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\
+"Names of targets and files being debugged.\nShows 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
}
}
+/* 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_target_async_command (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_target_async_command (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)
{
add_info ("target", target_info, targ_desc);
add_info ("files", target_info, targ_desc);
- add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\
+ add_setshow_zuinteger_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);
+ NULL,
+ show_targetdebug,
+ &setdebuglist, &showdebuglist);
add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
&trust_readonly, _("\
_("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_target_async_command,
+ show_target_async_command,
+ &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 ();
}
projects / deliverable / binutils-gdb.git / blobdiff