gdb/record.h

   1 /* Process record and replay target for GDB, the GNU debugger.
   2
   3    Copyright (C) 2008-2018 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _RECORD_H_
  21 #define _RECORD_H_
  22
  23 #include "target/waitstatus.h" /* For enum target_stop_reason.  */
  24 #include "common/enum-flags.h"
  25
  26 struct cmd_list_element;
  27
  28 extern unsigned int record_debug;
  29
  30 /* Allow record targets to add their own sub-commands.  */
  31 extern struct cmd_list_element *record_cmdlist;
  32 extern struct cmd_list_element *set_record_cmdlist;
  33 extern struct cmd_list_element *show_record_cmdlist;
  34 extern struct cmd_list_element *info_record_cmdlist;
  35
  36 /* Unwinders for some record targets.  */
  37 extern const struct frame_unwind record_btrace_frame_unwind;
  38 extern const struct frame_unwind record_btrace_tailcall_frame_unwind;
  39
  40 /* A list of different recording methods.  */
  41 enum record_method
  42 {
  43   /* No or unknown record method.  */
  44   RECORD_METHOD_NONE,
  45
  46   /* Record method "full".  */
  47   RECORD_METHOD_FULL,
  48
  49   /* Record method "btrace".  */
  50   RECORD_METHOD_BTRACE
  51 };
  52
  53 /* A list of flags specifying what record target methods should print.  */
  54 enum record_print_flag
  55 {
  56   /* Print the source file and line (if applicable).  */
  57   RECORD_PRINT_SRC_LINE = (1 << 0),
  58
  59   /* Print the instruction number range (if applicable).  */
  60   RECORD_PRINT_INSN_RANGE = (1 << 1),
  61
  62   /* Indent based on call stack depth (if applicable).  */
  63   RECORD_PRINT_INDENT_CALLS = (1 << 2)
  64 };
  65 DEF_ENUM_FLAGS_TYPE (enum record_print_flag, record_print_flags);
  66
  67 /* Determined whether the target is stopped at a software or hardware
  68    breakpoint, based on PC and the breakpoint tables.  The breakpoint
  69    type is translated to the appropriate target_stop_reason and
  70    written to REASON.  Returns true if stopped at a breakpoint, false
  71    otherwise.  */
  72
  73 extern int
  74   record_check_stopped_by_breakpoint (const address_space *aspace,
  75                                       CORE_ADDR pc,
  76                                       enum target_stop_reason *reason);
  77
  78 /* Wrapper for target_read_memory that prints a debug message if
  79    reading memory fails.  */
  80 extern int record_read_memory (struct gdbarch *gdbarch,
  81                                CORE_ADDR memaddr, gdb_byte *myaddr,
  82                                ssize_t len);
  83
  84 /* A wrapper for target_goto_record that parses ARG as a number.  */
  85 extern void record_goto (const char *arg);
  86
  87 /* The default "to_disconnect" target method for record targets.  */
  88 extern void record_disconnect (struct target_ops *, const char *, int);
  89
  90 /* The default "to_detach" target method for record targets.  */
  91 extern void record_detach (struct target_ops *, const char *, int);
  92
  93 /* The default "to_mourn_inferior" target method for record targets.  */
  94 extern void record_mourn_inferior (struct target_ops *);
  95
  96 /* The default "to_kill" target method for record targets.  */
  97 extern void record_kill (struct target_ops *);
  98
  99 /* Find the record_stratum target in the current target stack.
 100    Returns NULL if none is found.  */
 101 extern struct target_ops *find_record_target (void);
 102
 103 /* This is to be called by record_stratum targets' open routine before
 104    it does anything.  */
 105 extern void record_preopen (void);
 106
 107 /* Start recording with the given METHOD and FORMAT.  NULL means default method
 108    or format.  Throw on failure or invalid method / format.  */
 109 extern void record_start (const char *method, const char *format,
 110                           int from_tty);
 111
 112 /* Stop recording.  Throw on failure.  */
 113 extern void record_stop (int from_tty);
 114
 115 #endif /* _RECORD_H_ */