/* Process record and replay target for GDB, the GNU debugger.
- Copyright (C) 2013-2014 Free Software Foundation, Inc.
+ Copyright (C) 2013-2015 Free Software Foundation, Inc.
This file is part of GDB.
#include "regcache.h"
#include "gdbthread.h"
#include "event-top.h"
-#include "exceptions.h"
#include "completer.h"
#include "arch-utils.h"
#include "gdbcore.h"
#include "inf-loop.h"
#include "gdb_bfd.h"
#include "observer.h"
+#include "infrun.h"
#include <signal.h>
struct record_full_entry *rec;
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- rec = xcalloc (1, sizeof (struct record_full_entry));
+ rec = XCNEW (struct record_full_entry);
rec->type = record_full_reg;
rec->u.reg.num = regnum;
rec->u.reg.len = register_size (gdbarch, regnum);
{
struct record_full_entry *rec;
- rec = xcalloc (1, sizeof (struct record_full_entry));
+ rec = XCNEW (struct record_full_entry);
rec->type = record_full_mem;
rec->u.mem.addr = addr;
rec->u.mem.len = len;
{
struct record_full_entry *rec;
- rec = xcalloc (1, sizeof (struct record_full_entry));
+ rec = XCNEW (struct record_full_entry);
rec->type = record_full_end;
return rec;
static int
record_full_message_wrapper (void *args)
{
- struct record_full_message_args *record_full_args = args;
+ struct record_full_message_args *record_full_args
+ = (struct record_full_message_args *) args;
return record_full_message (record_full_args->regcache,
record_full_args->signal);
args.regcache = regcache;
args.signal = signal;
- return catch_errors (record_full_message_wrapper, &args, NULL,
+ return catch_errors (record_full_message_wrapper, &args, "",
RETURN_MASK_ALL);
}
}
/* Flag set to TRUE for target_stopped_by_watchpoint. */
-static int record_full_hw_watchpoint = 0;
+static enum target_stop_reason record_full_stop_reason
+ = TARGET_STOPPED_BY_NO_REASON;
/* Execute one instruction from the record log. Each instruction in
the log will be represented by an arbitrary sequence of register
/* Nothing to do if the entry is flagged not_accessible. */
if (!entry->u.mem.mem_entry_not_accessible)
{
- gdb_byte *mem = alloca (entry->u.mem.len);
+ gdb_byte *mem = (gdb_byte *) alloca (entry->u.mem.len);
if (record_debug > 1)
fprintf_unfiltered (gdb_stdlog,
if (hardware_watchpoint_inserted_in_range
(get_regcache_aspace (regcache),
entry->u.mem.addr, entry->u.mem.len))
- record_full_hw_watchpoint = 1;
+ record_full_stop_reason = TARGET_STOPPED_BY_WATCHPOINT;
}
}
}
/* Open the process record target. */
static void
-record_full_core_open_1 (char *name, int from_tty)
+record_full_core_open_1 (const char *name, int from_tty)
{
struct regcache *regcache = get_current_regcache ();
int regnum = gdbarch_num_regs (get_regcache_arch (regcache));
/* Get record_full_core_regbuf. */
target_fetch_registers (regcache, -1);
- record_full_core_regbuf = xmalloc (MAX_REGISTER_SIZE * regnum);
+ record_full_core_regbuf = (gdb_byte *) xmalloc (MAX_REGISTER_SIZE * regnum);
for (i = 0; i < regnum; i ++)
regcache_raw_collect (regcache, i,
record_full_core_regbuf + MAX_REGISTER_SIZE * i);
/* "to_open" target method for 'live' processes. */
static void
-record_full_open_1 (char *name, int from_tty)
+record_full_open_1 (const char *name, int from_tty)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "Process record: record_full_open\n");
/* "to_open" target method. Open the process record target. */
static void
-record_full_open (char *name, int from_tty)
+record_full_open (const char *name, int from_tty)
{
struct target_ops *t;
delete_async_event_handler (&record_full_async_inferior_event_token);
}
+/* "to_async" target method. */
+
+static void
+record_full_async (struct target_ops *ops, int enable)
+{
+ if (enable)
+ mark_async_event_handler (record_full_async_inferior_event_token);
+ else
+ clear_async_event_handler (record_full_async_inferior_event_token);
+
+ ops->beneath->to_async (ops->beneath, enable);
+}
+
static int record_full_resume_step = 0;
/* True if we've been resumed, and so each record_full_wait call should
else
{
/* This arch support soft sigle step. */
- if (single_step_breakpoints_inserted ())
+ if (thread_has_single_step_breakpoints_set (inferior_thread ()))
{
/* This is a soft single step. */
record_full_resume_step = 1;
/* We are about to start executing the inferior (or simulate it),
let's register it with the event loop. */
if (target_can_async_p ())
- {
- target_async (inferior_event_handler, 0);
- /* Notify the event loop there's an event to wait for. We do
- most of the work in record_full_wait. */
- mark_async_event_handler (record_full_async_inferior_event_token);
- }
+ target_async (1);
}
static int record_full_get_sig = 0;
record_full_get_sig = 0;
signal (SIGINT, record_full_sig_handler);
+ record_full_stop_reason = TARGET_STOPPED_BY_NO_REASON;
+
if (!RECORD_FULL_IS_REPLAY && ops != &record_full_core_ops)
{
if (record_full_resume_step)
while (1)
{
+ struct thread_info *tp;
+
ret = ops->beneath->to_wait (ops->beneath, ptid, status, options);
if (status->kind == TARGET_WAITKIND_IGNORE)
{
return ret;
}
- if (single_step_breakpoints_inserted ())
- remove_single_step_breakpoints ();
+ ALL_NON_EXITED_THREADS (tp)
+ delete_single_step_breakpoints (tp);
if (record_full_resume_step)
return ret;
{
struct regcache *regcache;
struct address_space *aspace;
+ enum target_stop_reason *stop_reason_p
+ = &record_full_stop_reason;
/* Yes -- this is likely our single-step finishing,
but check if there's any reason the core would be
{
/* Always interested in watchpoints. */
}
- else if (breakpoint_inserted_here_p (aspace, tmp_pc))
+ else if (record_check_stopped_by_breakpoint (aspace, tmp_pc,
+ stop_reason_p))
{
/* There is a breakpoint here. Let the core
handle it. */
- if (software_breakpoint_inserted_here_p (aspace, tmp_pc))
- {
- struct gdbarch *gdbarch
- = get_regcache_arch (regcache);
- CORE_ADDR decr_pc_after_break
- = target_decr_pc_after_break (gdbarch);
- if (decr_pc_after_break)
- regcache_write_pc (regcache,
- tmp_pc + decr_pc_after_break);
- }
}
else
{
= make_cleanup (record_full_wait_cleanups, 0);
CORE_ADDR tmp_pc;
- record_full_hw_watchpoint = 0;
+ record_full_stop_reason = TARGET_STOPPED_BY_NO_REASON;
status->kind = TARGET_WAITKIND_STOPPED;
/* Check breakpoint when forward execute. */
if (execution_direction == EXEC_FORWARD)
{
tmp_pc = regcache_read_pc (regcache);
- if (breakpoint_inserted_here_p (aspace, tmp_pc))
+ if (record_check_stopped_by_breakpoint (aspace, tmp_pc,
+ &record_full_stop_reason))
{
- int decr_pc_after_break = target_decr_pc_after_break (gdbarch);
-
if (record_debug)
fprintf_unfiltered (gdb_stdlog,
"Process record: break at %s.\n",
paddress (gdbarch, tmp_pc));
-
- if (decr_pc_after_break
- && !record_full_resume_step
- && software_breakpoint_inserted_here_p (aspace, tmp_pc))
- regcache_write_pc (regcache,
- tmp_pc + decr_pc_after_break);
goto replay_out;
}
}
/* check breakpoint */
tmp_pc = regcache_read_pc (regcache);
- if (breakpoint_inserted_here_p (aspace, tmp_pc))
+ if (record_check_stopped_by_breakpoint (aspace, tmp_pc,
+ &record_full_stop_reason))
{
- int decr_pc_after_break
- = target_decr_pc_after_break (gdbarch);
-
if (record_debug)
fprintf_unfiltered (gdb_stdlog,
"Process record: break "
"at %s.\n",
paddress (gdbarch, tmp_pc));
- if (decr_pc_after_break
- && execution_direction == EXEC_FORWARD
- && !record_full_resume_step
- && software_breakpoint_inserted_here_p (aspace,
- tmp_pc))
- regcache_write_pc (regcache,
- tmp_pc + decr_pc_after_break);
+
continue_flag = 0;
}
- if (record_full_hw_watchpoint)
+ if (record_full_stop_reason == TARGET_STOPPED_BY_WATCHPOINT)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog,
record_full_stopped_by_watchpoint (struct target_ops *ops)
{
if (RECORD_FULL_IS_REPLAY)
- return record_full_hw_watchpoint;
+ return record_full_stop_reason == TARGET_STOPPED_BY_WATCHPOINT;
else
return ops->beneath->to_stopped_by_watchpoint (ops->beneath);
}
return ops->beneath->to_stopped_data_address (ops->beneath, addr_p);
}
+/* The to_stopped_by_sw_breakpoint method of target record-full. */
+
+static int
+record_full_stopped_by_sw_breakpoint (struct target_ops *ops)
+{
+ return record_full_stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT;
+}
+
+/* The to_supports_stopped_by_sw_breakpoint method of target
+ record-full. */
+
+static int
+record_full_supports_stopped_by_sw_breakpoint (struct target_ops *ops)
+{
+ return 1;
+}
+
+/* The to_stopped_by_hw_breakpoint method of target record-full. */
+
+static int
+record_full_stopped_by_hw_breakpoint (struct target_ops *ops)
+{
+ return record_full_stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT;
+}
+
+/* The to_supports_stopped_by_sw_breakpoint method of target
+ record-full. */
+
+static int
+record_full_supports_stopped_by_hw_breakpoint (struct target_ops *ops)
+{
+ return 1;
+}
+
/* Record registers change (by user or by GDB) to list as an instruction. */
static void
/* "to_get_bookmark" method for process record and prec over core. */
static gdb_byte *
-record_full_get_bookmark (struct target_ops *self, char *args, int from_tty)
+record_full_get_bookmark (struct target_ops *self, const char *args,
+ int from_tty)
{
char *ret = NULL;
static void
record_full_goto_bookmark (struct target_ops *self,
- gdb_byte *raw_bookmark, int from_tty)
+ const gdb_byte *raw_bookmark, int from_tty)
{
- char *bookmark = (char *) raw_bookmark;
+ const char *bookmark = (const char *) raw_bookmark;
+ struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
if (record_debug)
fprintf_unfiltered (gdb_stdlog,
if (bookmark[0] == '\'' || bookmark[0] == '\"')
{
+ char *copy;
+
if (bookmark[strlen (bookmark) - 1] != bookmark[0])
error (_("Unbalanced quotes: %s"), bookmark);
- /* Strip trailing quote. */
- bookmark[strlen (bookmark) - 1] = '\0';
- /* Strip leading quote. */
- bookmark++;
- /* Pass along to cmd_record_full_goto. */
+
+ copy = savestring (bookmark + 1, strlen (bookmark) - 2);
+ make_cleanup (xfree, copy);
+ bookmark = copy;
}
- cmd_record_goto (bookmark, from_tty);
- return;
-}
+ record_goto (bookmark);
-static int
-record_full_can_async_p (struct target_ops *ops)
-{
- /* We only enable async when the user specifically asks for it. */
- return target_async_permitted;
-}
-
-static int
-record_full_is_async_p (struct target_ops *ops)
-{
- /* We only enable async when the user specifically asks for it. */
- return target_async_permitted;
+ do_cleanups (cleanup);
}
static enum exec_direction_kind
/* The "to_record_is_replaying" target method. */
static int
-record_full_is_replaying (struct target_ops *self)
+record_full_is_replaying (struct target_ops *self, ptid_t ptid)
{
return RECORD_FULL_IS_REPLAY;
}
+/* The "to_record_will_replay" target method. */
+
+static int
+record_full_will_replay (struct target_ops *self, ptid_t ptid, int dir)
+{
+ /* We can currently only record when executing forwards. Should we be able
+ to record when executing backwards on targets that support reverse
+ execution, this needs to be changed. */
+
+ return RECORD_FULL_IS_REPLAY || dir == EXEC_REVERSE;
+}
+
/* Go to a specific entry. */
static void
registers_changed ();
reinit_frame_cache ();
+ stop_pc = regcache_read_pc (get_current_regcache ());
print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
}
record_full_goto_entry (p);
}
+/* The "to_record_stop_replaying" target method. */
+
+static void
+record_full_stop_replaying (struct target_ops *self)
+{
+ record_full_goto_end (self);
+}
+
static void
init_record_full_ops (void)
{
"Log program while executing and replay execution from log.";
record_full_ops.to_open = record_full_open;
record_full_ops.to_close = record_full_close;
+ record_full_ops.to_async = record_full_async;
record_full_ops.to_resume = record_full_resume;
record_full_ops.to_wait = record_full_wait;
record_full_ops.to_disconnect = record_disconnect;
record_full_ops.to_detach = record_detach;
record_full_ops.to_mourn_inferior = record_mourn_inferior;
record_full_ops.to_kill = record_kill;
- record_full_ops.to_create_inferior = find_default_create_inferior;
record_full_ops.to_store_registers = record_full_store_registers;
record_full_ops.to_xfer_partial = record_full_xfer_partial;
record_full_ops.to_insert_breakpoint = record_full_insert_breakpoint;
record_full_ops.to_remove_breakpoint = record_full_remove_breakpoint;
record_full_ops.to_stopped_by_watchpoint = record_full_stopped_by_watchpoint;
record_full_ops.to_stopped_data_address = record_full_stopped_data_address;
+ record_full_ops.to_stopped_by_sw_breakpoint
+ = record_full_stopped_by_sw_breakpoint;
+ record_full_ops.to_supports_stopped_by_sw_breakpoint
+ = record_full_supports_stopped_by_sw_breakpoint;
+ record_full_ops.to_stopped_by_hw_breakpoint
+ = record_full_stopped_by_hw_breakpoint;
+ record_full_ops.to_supports_stopped_by_hw_breakpoint
+ = record_full_supports_stopped_by_hw_breakpoint;
record_full_ops.to_can_execute_reverse = record_full_can_execute_reverse;
record_full_ops.to_stratum = record_stratum;
/* Add bookmark target methods. */
record_full_ops.to_get_bookmark = record_full_get_bookmark;
record_full_ops.to_goto_bookmark = record_full_goto_bookmark;
- record_full_ops.to_can_async_p = record_full_can_async_p;
- record_full_ops.to_is_async_p = record_full_is_async_p;
record_full_ops.to_execution_direction = record_full_execution_direction;
record_full_ops.to_info_record = record_full_info;
record_full_ops.to_save_record = record_full_save;
record_full_ops.to_delete_record = record_full_delete;
record_full_ops.to_record_is_replaying = record_full_is_replaying;
+ record_full_ops.to_record_will_replay = record_full_will_replay;
+ record_full_ops.to_record_stop_replaying = record_full_stop_replaying;
record_full_ops.to_goto_record_begin = record_full_goto_begin;
record_full_ops.to_goto_record_end = record_full_goto_end;
record_full_ops.to_goto_record = record_full_goto;
/* We are about to start executing the inferior (or simulate it),
let's register it with the event loop. */
if (target_can_async_p ())
- {
- target_async (inferior_event_handler, 0);
-
- /* Notify the event loop there's an event to wait for. */
- mark_async_event_handler (record_full_async_inferior_event_token);
- }
+ target_async (1);
}
/* "to_kill" method for prec over corefile. */
if (!entry)
{
/* Add a new entry. */
- entry = (struct record_full_core_buf_entry *)
- xmalloc
- (sizeof (struct record_full_core_buf_entry));
+ entry = XNEW (struct record_full_core_buf_entry);
entry->p = p;
if (!bfd_malloc_and_get_section
(p->the_bfd_section->owner,
"Log program while executing and replay execution from log.";
record_full_core_ops.to_open = record_full_open;
record_full_core_ops.to_close = record_full_close;
+ record_full_core_ops.to_async = record_full_async;
record_full_core_ops.to_resume = record_full_core_resume;
record_full_core_ops.to_wait = record_full_wait;
record_full_core_ops.to_kill = record_full_core_kill;
= record_full_stopped_by_watchpoint;
record_full_core_ops.to_stopped_data_address
= record_full_stopped_data_address;
+ record_full_core_ops.to_stopped_by_sw_breakpoint
+ = record_full_stopped_by_sw_breakpoint;
+ record_full_core_ops.to_supports_stopped_by_sw_breakpoint
+ = record_full_supports_stopped_by_sw_breakpoint;
+ record_full_core_ops.to_stopped_by_hw_breakpoint
+ = record_full_stopped_by_hw_breakpoint;
+ record_full_core_ops.to_supports_stopped_by_hw_breakpoint
+ = record_full_supports_stopped_by_hw_breakpoint;
record_full_core_ops.to_can_execute_reverse
= record_full_can_execute_reverse;
record_full_core_ops.to_has_execution = record_full_core_has_execution;
/* Add bookmark target methods. */
record_full_core_ops.to_get_bookmark = record_full_get_bookmark;
record_full_core_ops.to_goto_bookmark = record_full_goto_bookmark;
- record_full_core_ops.to_can_async_p = record_full_can_async_p;
- record_full_core_ops.to_is_async_p = record_full_is_async_p;
record_full_core_ops.to_execution_direction
= record_full_execution_direction;
record_full_core_ops.to_info_record = record_full_info;
record_full_core_ops.to_delete_record = record_full_delete;
record_full_core_ops.to_record_is_replaying = record_full_is_replaying;
+ record_full_core_ops.to_record_will_replay = record_full_will_replay;
record_full_core_ops.to_goto_record_begin = record_full_goto_begin;
record_full_core_ops.to_goto_record_end = record_full_goto_end;
record_full_core_ops.to_goto_record = record_full_goto;
bfdcore_read (core_bfd, osec, &signal,
sizeof (signal), &bfd_offset);
signal = netorder32 (signal);
- rec->u.end.sigval = signal;
+ rec->u.end.sigval = (enum gdb_signal) signal;
/* Get insn count. */
bfdcore_read (core_bfd, osec, &count,
static void
record_full_save_cleanups (void *data)
{
- bfd *obfd = data;
+ bfd *obfd = (bfd *) data;
char *pathname = xstrdup (bfd_get_filename (obfd));
gdb_bfd_unref (obfd);
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