gdb/mi/mi-cmd-disas.c

   1 /* MI Command Set - disassemble commands.
   2    Copyright (C) 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
   3    Contributed by Cygnus Solutions (a Red Hat company).
   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 #include "defs.h"
  21 #include "target.h"
  22 #include "value.h"
  23 #include "mi-cmds.h"
  24 #include "mi-getopt.h"
  25 #include "gdb_string.h"
  26 #include "ui-out.h"
  27 #include "disasm.h"
  28
  29 /* The arguments to be passed on the command line and parsed here are:
  30
  31    either:
  32
  33    START-ADDRESS: address to start the disassembly at.
  34    END-ADDRESS: address to end the disassembly at.
  35
  36    or:
  37
  38    FILENAME: The name of the file where we want disassemble from.
  39    LINE: The line around which we want to disassemble. It will
  40    disassemble the function that contins that line.
  41    HOW_MANY: Number of disassembly lines to display. In mixed mode, it
  42    is the number of disassembly lines only, not counting the source
  43    lines.
  44
  45    always required:
  46
  47    MODE: 0 or 1 for disassembly only, or mixed source and disassembly,
  48    respectively. */
  49 void
  50 mi_cmd_disassemble (char *command, char **argv, int argc)
  51 {
  52   CORE_ADDR start;
  53
  54   int mixed_source_and_assembly;
  55   struct symtab *s;
  56
  57   /* Which options have we processed ... */
  58   int file_seen = 0;
  59   int line_seen = 0;
  60   int num_seen = 0;
  61   int start_seen = 0;
  62   int end_seen = 0;
  63
  64   /* ... and their corresponding value. */
  65   char *file_string = NULL;
  66   int line_num = -1;
  67   int how_many = -1;
  68   CORE_ADDR low = 0;
  69   CORE_ADDR high = 0;
  70
  71   /* Options processing stuff. */
  72   int optind = 0;
  73   char *optarg;
  74   enum opt
  75   {
  76     FILE_OPT, LINE_OPT, NUM_OPT, START_OPT, END_OPT
  77   };
  78   static struct mi_opt opts[] = {
  79     {"f", FILE_OPT, 1},
  80     {"l", LINE_OPT, 1},
  81     {"n", NUM_OPT, 1},
  82     {"s", START_OPT, 1},
  83     {"e", END_OPT, 1},
  84     { 0, 0, 0 }
  85   };
  86
  87   /* Get the options with their arguments. Keep track of what we
  88      encountered. */
  89   while (1)
  90     {
  91       int opt = mi_getopt ("mi_cmd_disassemble", argc, argv, opts,
  92                            &optind, &optarg);
  93       if (opt < 0)
  94         break;
  95       switch ((enum opt) opt)
  96         {
  97         case FILE_OPT:
  98           file_string = xstrdup (optarg);
  99           file_seen = 1;
 100           break;
 101         case LINE_OPT:
 102           line_num = atoi (optarg);
 103           line_seen = 1;
 104           break;
 105         case NUM_OPT:
 106           how_many = atoi (optarg);
 107           num_seen = 1;
 108           break;
 109         case START_OPT:
 110           low = parse_and_eval_address (optarg);
 111           start_seen = 1;
 112           break;
 113         case END_OPT:
 114           high = parse_and_eval_address (optarg);
 115           end_seen = 1;
 116           break;
 117         }
 118     }
 119   argv += optind;
 120   argc -= optind;
 121
 122   /* Allow only filename + linenum (with how_many which is not
 123      required) OR start_addr + and_addr */
 124
 125   if (!((line_seen && file_seen && num_seen && !start_seen && !end_seen)
 126         || (line_seen && file_seen && !num_seen && !start_seen && !end_seen)
 127         || (!line_seen && !file_seen && !num_seen && start_seen && end_seen)))
 128     error
 129       ("mi_cmd_disassemble: Usage: ( [-f filename -l linenum [-n howmany]] | [-s startaddr -e endaddr]) [--] mixed_mode.");
 130
 131   if (argc != 1)
 132     error
 133       ("mi_cmd_disassemble: Usage: [-f filename -l linenum [-n howmany]] [-s startaddr -e endaddr] [--] mixed_mode.");
 134
 135   mixed_source_and_assembly = atoi (argv[0]);
 136   if ((mixed_source_and_assembly != 0) && (mixed_source_and_assembly != 1))
 137     error (_("mi_cmd_disassemble: Mixed_mode argument must be 0 or 1."));
 138
 139
 140   /* We must get the function beginning and end where line_num is
 141      contained. */
 142
 143   if (line_seen && file_seen)
 144     {
 145       s = lookup_symtab (file_string);
 146       if (s == NULL)
 147         error (_("mi_cmd_disassemble: Invalid filename."));
 148       if (!find_line_pc (s, line_num, &start))
 149         error (_("mi_cmd_disassemble: Invalid line number"));
 150       if (find_pc_partial_function (start, NULL, &low, &high) == 0)
 151         error (_("mi_cmd_disassemble: No function contains specified address"));
 152     }
 153
 154   gdb_disassembly (uiout,
 155                    file_string,
 156                    line_num,
 157                    mixed_source_and_assembly, how_many, low, high);
 158
 159 }