1 /* MI Command Set - disassemble commands. 2 Copyright (C) 2000-2020 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 "arch-utils.h" 22 #include "target.h" 23 #include "value.h" 24 #include "mi-cmds.h" 25 #include "mi-getopt.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 either: 31 32 START-ADDRESS: address to start the disassembly at. 33 END-ADDRESS: address to end the disassembly at. 34 35 or: 36 37 FILENAME: The name of the file where we want disassemble from. 38 LINE: The line around which we want to disassemble. It will 39 disassemble the function that contains that line. 40 HOW_MANY: Number of disassembly lines to display. With source, it 41 is the number of disassembly lines only, not counting the source 42 lines. 43 44 always required: 45 46 MODE: 0 -- disassembly. 47 1 -- disassembly and source (with deprecated source-centric view). 48 2 -- disassembly and opcodes. 49 3 -- disassembly, source-centric and opcodes. 50 4 -- disassembly, and source (with pc-centric view). 51 5 -- disassembly, source (pc-centric) and opcodes. */ 52 53 void 54 mi_cmd_disassemble (const char *command, char **argv, int argc) 55 { 56 struct gdbarch *gdbarch = get_current_arch (); 57 struct ui_out *uiout = current_uiout; 58 CORE_ADDR start; 59 60 int mode; 61 gdb_disassembly_flags disasm_flags; 62 struct symtab *s; 63 64 /* Which options have we processed ... */ 65 int file_seen = 0; 66 int line_seen = 0; 67 int num_seen = 0; 68 int start_seen = 0; 69 int end_seen = 0; 70 int addr_seen = 0; 71 72 /* ... and their corresponding value. */ 73 char *file_string = NULL; 74 int line_num = -1; 75 int how_many = -1; 76 CORE_ADDR low = 0; 77 CORE_ADDR high = 0; 78 CORE_ADDR addr = 0; 79 80 /* Options processing stuff. */ 81 int oind = 0; 82 char *oarg; 83 enum opt 84 { 85 FILE_OPT, LINE_OPT, NUM_OPT, START_OPT, END_OPT, ADDR_OPT 86 }; 87 static const struct mi_opt opts[] = 88 { 89 {"f", FILE_OPT, 1}, 90 {"l", LINE_OPT, 1}, 91 {"n", NUM_OPT, 1}, 92 {"s", START_OPT, 1}, 93 {"e", END_OPT, 1}, 94 {"a", ADDR_OPT, 1}, 95 { 0, 0, 0 } 96 }; 97 98 /* Get the options with their arguments. Keep track of what we 99 encountered. */ 100 while (1) 101 { 102 int opt = mi_getopt ("-data-disassemble", argc, argv, opts, 103 &oind, &oarg); 104 if (opt < 0) 105 break; 106 switch ((enum opt) opt) 107 { 108 case FILE_OPT: 109 file_string = oarg; 110 file_seen = 1; 111 break; 112 case LINE_OPT: 113 line_num = atoi (oarg); 114 line_seen = 1; 115 break; 116 case NUM_OPT: 117 how_many = atoi (oarg); 118 num_seen = 1; 119 break; 120 case START_OPT: 121 low = parse_and_eval_address (oarg); 122 start_seen = 1; 123 break; 124 case END_OPT: 125 high = parse_and_eval_address (oarg); 126 end_seen = 1; 127 break; 128 case ADDR_OPT: 129 addr = parse_and_eval_address (oarg); 130 addr_seen = 1; 131 break; 132 } 133 } 134 argv += oind; 135 argc -= oind; 136 137 /* Allow only filename + linenum (with how_many which is not 138 required) OR start_addr + end_addr OR addr. */ 139 140 if (!( 141 ( line_seen && file_seen && !start_seen && !end_seen 142 && !addr_seen) 143 144 || (!line_seen && !file_seen && !num_seen && start_seen && end_seen 145 && !addr_seen) 146 147 || (!line_seen && !file_seen && !num_seen && !start_seen && !end_seen 148 && addr_seen)) 149 || argc != 1) 150 error (_("-data-disassemble: Usage: ( [-f filename -l linenum " 151 "[-n howmany]] | [-s startaddr -e endaddr] | [-a addr] ) [--] mode.")); 152 153 mode = atoi (argv[0]); 154 if (mode < 0 || mode > 5) 155 error (_("-data-disassemble: Mode argument must be in the range 0-5.")); 156 157 /* Convert the mode into a set of disassembly flags. */ 158 159 disasm_flags = 0; /* Initialize here for -Wall. */ 160 switch (mode) 161 { 162 case 0: 163 break; 164 case 1: 165 disasm_flags |= DISASSEMBLY_SOURCE_DEPRECATED; 166 break; 167 case 2: 168 disasm_flags |= DISASSEMBLY_RAW_INSN; 169 break; 170 case 3: 171 disasm_flags |= DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_RAW_INSN; 172 break; 173 case 4: 174 disasm_flags |= DISASSEMBLY_SOURCE; 175 break; 176 case 5: 177 disasm_flags |= DISASSEMBLY_SOURCE | DISASSEMBLY_RAW_INSN; 178 break; 179 default: 180 gdb_assert_not_reached ("bad disassembly mode"); 181 } 182 183 /* We must get the function beginning and end where line_num is 184 contained. */ 185 186 if (line_seen && file_seen) 187 { 188 s = lookup_symtab (file_string); 189 if (s == NULL) 190 error (_("-data-disassemble: Invalid filename.")); 191 if (!find_line_pc (s, line_num, &start)) 192 error (_("-data-disassemble: Invalid line number")); 193 if (find_pc_partial_function (start, NULL, &low, &high) == 0) 194 error (_("-data-disassemble: " 195 "No function contains specified address")); 196 } 197 else if (addr_seen) 198 { 199 if (find_pc_partial_function (addr, NULL, &low, &high) == 0) 200 error (_("-data-disassemble: " 201 "No function contains specified address")); 202 } 203 204 gdb_disassembly (gdbarch, uiout, 205 disasm_flags, 206 how_many, low, high); 207 } 208