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 <malloc.h>
  43 #include <ctype.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46
  47 /* Define when the dprinter device shall try to filter
  48  * out ANSI escape sequences.
  49  */
  50 #define IGNORE_ANSI_ESCAPE_SEQUENCES
  51 /* Define when you want the ANSI escape sequences to be dumped as
  52  * hex numbers.
  53  */
  54 // #define DUMP_ANSI_ESCAPE_SEQUENCES
  55
  56 void interactive_control(void)
  57 {
  58         tobreak = false;
  59
  60         if (reenter) {
  61                 mprintf("\n");
  62                 reenter = false;
  63         }
  64
  65         stepping = 0;
  66
  67         while (interactive) {
  68                 char *commline = helenos_input_get_next_command();
  69                 if (commline == NULL) {
  70                         mprintf("Quit\n");
  71                         input_back();
  72                         exit(1);
  73                 }
  74
  75                 /* Check for empty input. */
  76                 if (commline[0] == '\0') {
  77                         interpret("step");
  78                 } else {
  79                         interpret(commline);
  80                 }
  81
  82                 free(commline);
  83         }
  84 }
  85
  86 bool gdb_remote_init(void)
  87 {
  88         return false;
  89 }
  90
  91 void gdb_session(void)
  92 {
  93 }
  94
  95 void gdb_handle_event(gdb_event_t event)
  96 {
  97 }
  98
  99
 100 static void (*original_printer_write)(cpu_t *, device_s *, ptr_t, uint32_t);
 101 static void helenos_printer_write(cpu_t *cpu, device_s *dev, ptr_t addr, uint32_t val)
 102 {
 103 #ifdef IGNORE_ANSI_ESCAPE_SEQUENCES
 104         static bool inside_ansi_escape = false;
 105         static bool just_ended_ansi_escape = false;
 106
 107         if (inside_ansi_escape) {
 108 #ifdef DUMP_ANSI_ESCAPE_SEQUENCES
 109                 fprintf(stderr, "%02" PRIx32 "'%c' ", val, val >= 32 ? val : '?');
 110 #endif
 111                 if (isalpha((int) val)) {
 112                         just_ended_ansi_escape = true;
 113                         inside_ansi_escape = false;
 114 #ifdef DUMP_ANSI_ESCAPE_SEQUENCES
 115                         fprintf(stderr, " [END]\n");
 116 #endif
 117                 }
 118
 119                 return;
 120         }
 121
 122         if (val == 0x1B) {
 123                 inside_ansi_escape = true;
 124
 125                 if (!just_ended_ansi_escape) {
 126 #ifdef DUMP_ANSI_ESCAPE_SEQUENCES
 127                         fprintf(stderr, "\n");
 128 #endif
 129                 }
 130 #ifdef DUMP_ANSI_ESCAPE_SEQUENCES
 131                 fprintf(stderr, "ESC sequence: ");
 132 #endif
 133
 134                 return;
 135         }
 136
 137         just_ended_ansi_escape = false;
 138 #endif
 139
 140         (*original_printer_write)(cpu, dev, addr, val);
 141 }
 142
 143 void helenos_dprinter_init(void)
 144 {
 145         original_printer_write = dprinter.write;
 146         dprinter.write = helenos_printer_write;
 147 }
 148
 149