msim/misc.c

   1 /*
   2  * Copyright (c) 2012 Vojtech Horky
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @addtogroup msim
  30  * @{
  31  */
  32 /** @file HelenOS specific functions for MSIM simulator.
  33  */
  34 #include "../../io/input.h"
  35 #include "../../io/output.h"
  36 #include "../../device/dprinter.h"
  37 #include "../../debug/gdb.h"
  38 #include "../../cmd.h"
  39 #include "../../fault.h"
  40 #include "../../device/machine.h"
  41 #include "helenos.h"
  42 #include <str.h>
  43 #include <malloc.h>
  44 #include <ctype.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47
  48 /* Define when the dprinter device shall try to filter
  49  * out ANSI escape sequences.
  50  */
  51 #define IGNORE_ANSI_ESCAPE_SEQUENCES
  52 /* Define when you want the ANSI escape sequences to be dumped as
  53  * hex numbers.
  54  */
  55 // #define DUMP_ANSI_ESCAPE_SEQUENCES
  56
  57 void interactive_control(void)
  58 {
  59         tobreak = false;
  60
  61         if (reenter) {
  62                 mprintf("\n");
  63                 reenter = false;
  64         }
  65
  66         stepping = 0;
  67
  68         while (interactive) {
  69                 char *commline = helenos_input_get_next_command();
  70                 if (commline == NULL) {
  71                         mprintf("Quit\n");
  72                         input_back();
  73                         exit(1);
  74                 }
  75
  76                 /* Check for empty input. */
  77                 if (str_cmp(commline, "") == 0) {
  78                         interpret("step");
  79                 } else {
  80                         interpret(commline);
  81                 }
  82
  83                 free(commline);
  84         }
  85 }
  86
  87 bool gdb_remote_init(void)
  88 {
  89         return false;
  90 }
  91
  92 void gdb_session(void)
  93 {
  94 }
  95
  96 void gdb_handle_event(gdb_event_t event)
  97 {
  98 }
  99
 100
 101 static void (*original_printer_write)(cpu_t *, device_s *, ptr_t, uint32_t);
 102 static void helenos_printer_write(cpu_t *cpu, device_s *dev, ptr_t addr, uint32_t val)
 103 {
 104 #ifdef IGNORE_ANSI_ESCAPE_SEQUENCES
 105         static bool inside_ansi_escape = false;
 106         static bool just_ended_ansi_escape = false;
 107
 108         if (inside_ansi_escape) {
 109 #ifdef DUMP_ANSI_ESCAPE_SEQUENCES
 110                 fprintf(stderr, "%02" PRIx32 "'%c' ", val, val >= 32 ? val : '?');
 111 #endif
 112                 if (isalpha((int) val)) {
 113                         just_ended_ansi_escape = true;
 114                         inside_ansi_escape = false;
 115 #ifdef DUMP_ANSI_ESCAPE_SEQUENCES
 116                         fprintf(stderr, " [END]\n");
 117 #endif
 118                 }
 119
 120                 return;
 121         }
 122
 123         if (val == 0x1B) {
 124                 inside_ansi_escape = true;
 125
 126                 if (!just_ended_ansi_escape) {
 127 #ifdef DUMP_ANSI_ESCAPE_SEQUENCES
 128                         fprintf(stderr, "\n");
 129 #endif
 130                 }
 131 #ifdef DUMP_ANSI_ESCAPE_SEQUENCES
 132                 fprintf(stderr, "ESC sequence: ");
 133 #endif
 134
 135                 return;
 136         }
 137
 138         just_ended_ansi_escape = false;
 139 #endif
 140
 141         (*original_printer_write)(cpu, dev, addr, val);
 142 }
 143
 144 void helenos_dprinter_init(void)
 145 {
 146         original_printer_write = dprinter.write;
 147         dprinter.write = helenos_printer_write;
 148 }
 149
 150