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   1 /*
   2  * Copyright © 2008 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 #include "s51.h"
  20
  21 static struct command_function functions[] = {
  22         { "help",   "?",  command_help, "help",         "Print this list\n" },
  23         { "quit",   "q",  command_quit, "[q]uit",       "Quit\n" },
  24         { "di",     "di", command_di,   "di <start> <end>",
  25                 "Dump imem\n" },
  26         { "ds",     "ds", command_ds,   "ds <start> <end>",
  27                 "Dump sprs\n" },
  28         { "dx",     "dx", command_dx,   "dx <start> <end>",
  29                 "Dump xaddr\n" },
  30         { "set",    "t",  command_set,  "se[t] mem <prefix> <start> <end>",
  31                 "Set mem {xram|rom|iram|sfr} <start> <end>\n"
  32                 "set bit <addr>\n" },
  33         { "dump",   "d",  command_dump, "[d]ump <prefix> <start> <end>",
  34                 "Dump {xram|rom|iram|sfr} <start> <end>\n" },
  35         { "file", "file", command_file, "file <filename>",
  36                 "Pretend to load executable from <filename>\n" },
  37         { "pc",     "p",  command_pc, "[p]c [addr]",
  38                 "Get or set pc value\n" },
  39         { "break",  "b",  command_break,"[b]reak <addr>",
  40                 "Set break point\n" },
  41         { "clear",  "c",  command_clear,"[c]lear <addr>",
  42                 "Clear break point\n" },
  43         { "run",    "r",  command_run, "[r]un [start] [stop]",
  44                 "Run with optional start and temp breakpoint addresses\n" },
  45         { "go",     "g",  command_run, "[g]o [start] [stop]",
  46                 "Run with optional start and temp breakpoint addresses\n" },
  47         { "next",   "n",  command_next, "[n]ext",
  48                 "Step over one instruction, past any call\n" },
  49         { "step",   "s",  command_step, "[s]tep",
  50                 "Single step\n" },
  51         { "load",   "l",  command_load, "[l]oad <file>",
  52                 "Load a hex file into memory or flash" },
  53         { "halt",   "h",  command_halt, "[h]alt",
  54                 "Halt the processor\n" },
  55         { "reset","res",command_reset,  "[res]et",
  56                 "Reset the CPU\n" },
  57         { "status","status",command_status, "status",
  58                 "Display CC1111 debug status\n" },
  59         { "info",   "i",  command_info, "[i]info",
  60                 "Get information\n" },
  61         { "stop",  "stop", command_stop, "stop",
  62                 "Ignored\n" },
  63         { NULL, NULL, NULL, NULL, NULL },
  64 };
  65
  66 #ifndef FALSE
  67 #define FALSE 0
  68 #define TRUE 1
  69 #endif
  70
  71 static int
  72 string_to_int(char *s, int *v)
  73 {
  74         char *endptr;
  75
  76         if (isdigit(s[0]) || s[0] == '-' || s[0] == '+') {
  77                 *v = strtol(s, &endptr, 0);
  78                 if (endptr == s)
  79                         return FALSE;
  80         } else if (*s == '\'') {
  81                 s++;
  82                 if (*s == '\\') {
  83                         s++;
  84                         switch (*s) {
  85                         case 'n':
  86                                 *v = '\n';
  87                                 break;
  88                         case 't':
  89                                 *v = '\t';
  90                                 break;
  91                         default:
  92                                 *v = (int) *s;
  93                                 break;
  94                         }
  95                 } else
  96                         *v = (int) *s;
  97                 s++;
  98                 if (*s != '\'')
  99                         return FALSE;
 100         }
 101         else
 102                 return FALSE;
 103     return TRUE;
 104 }
 105
 106 struct command_function *
 107 command_string_to_function(struct command_function *functions, char *name)
 108 {
 109         int i;
 110         for (i = 0; functions[i].name; i++)
 111                 if (!strcmp(name, functions[i].name) ||
 112                     !strcmp(name, functions[i].alias))
 113                         return &functions[i];
 114         return NULL;
 115 }
 116
 117 enum command_result
 118 command_function_help(struct command_function *functions, int argc, char **argv)
 119 {
 120         int i;
 121         struct command_function *func;
 122
 123         if (argc == 1) {
 124                 for (i = 0; functions[i].name; i++)
 125                         s51_printf("%-10s%s\n", functions[i].name,
 126                                functions[i].usage);
 127         } else {
 128                 for (i = 1; i < argc; i++) {
 129                         func = command_string_to_function(functions, argv[i]);
 130                         if (!func) {
 131                                 s51_printf("%-10s unknown command\n", argv[i]);
 132                                 return command_syntax;
 133                         }
 134                         s51_printf("%-10s %s\n%s", func->name,
 135                                func->usage, func->help);
 136                 }
 137         }
 138         return command_debug;
 139 }
 140
 141 static int
 142 command_split_into_words(char *line, char **argv)
 143 {
 144         char quotechar;
 145         int argc;
 146
 147         argc = 0;
 148         while (*line) {
 149                 while (isspace(*line))
 150                         line++;
 151                 if (!*line)
 152                         break;
 153                 if (*line == '"') {
 154                         quotechar = *line++;
 155                         *argv++ = line;
 156                         argc++;
 157                         while (*line && *line != quotechar)
 158                                 line++;
 159                         if (*line)
 160                                 *line++ = '\0';
 161                 } else {
 162                         *argv++ = line;
 163                         argc++;
 164                         while (*line && !isspace(*line))
 165                                 line++;
 166                         if (*line)
 167                                 *line++ = '\0';
 168                 }
 169         }
 170         *argv = 0;
 171         return argc;
 172 }
 173
 174 enum command_result
 175 command_help(int argc, char **argv)
 176 {
 177         return command_function_help(functions, argc, argv);
 178 }
 179
 180 void
 181 command_syntax_error(int argc, char **argv)
 182 {
 183         s51_printf("Syntax error in:");
 184         while (*argv)
 185                 s51_printf(" %s", *argv++);
 186         s51_printf("\n");
 187 }
 188
 189 void
 190 command_read (void)
 191 {
 192         int argc;
 193         char line[1024];
 194         char *argv[20];
 195         enum command_result result;
 196         struct command_function *func;
 197
 198         s51_dbg = ccdbg_open ();
 199         if (!s51_dbg) {
 200                 perror("ccdbg_open");
 201                 exit(1);
 202         }
 203         ccdbg_debug_mode(s51_dbg);
 204         ccdbg_halt(s51_dbg);
 205         s51_printf("Welcome to the non-simulated processor\n");
 206         for (;;) {
 207                 if (s51_read_line (line, sizeof line) == 0)
 208                         break;
 209                 s51_interrupted = 0;
 210                 argc = command_split_into_words(line, argv);
 211                 if (argc > 0) {
 212                         func = command_string_to_function(functions, argv[0]);
 213                         if (!func)
 214                                 command_syntax_error(argc, argv);
 215                         else
 216                         {
 217                                 result = (*func->func)(argc, argv);
 218                                 if (s51_interrupted)
 219                                         result = command_interrupt;
 220                                 switch (result) {
 221                                 case command_syntax:
 222                                         command_syntax_error(argc, argv);
 223                                         break;
 224                                 case command_error:
 225                                         s51_printf("Error\n");
 226                                         break;
 227                                 case command_success:
 228                                         break;
 229                                 case command_interrupt:
 230                                         ccdbg_halt(s51_dbg);
 231                                         s51_printf("Interrupted\n");
 232                                         break;
 233                                 default:
 234                                         break;
 235                                 }
 236                         }
 237                 }
 238         }
 239         ccdbg_close(s51_dbg);
 240         s51_printf("...\n");
 241 }
 242