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authorJose Antonio Ortega Ruiz <jao@gnu.org>2001-08-28 16:38:06 +0000
committerJose Antonio Ortega Ruiz <jao@gnu.org>2001-08-28 16:38:06 +0000
commitfd346daffb1a4ec94a8a7b28d30efc37e2742f24 (patch)
tree1013e9930944ffb05d198d0cd4ade1c5573f00ce /mixlib/xmix_vm_handlers.c
parent6446df78afb4f3da2aa90e25b18b471fb272a8a9 (diff)
downloadmdk-fd346daffb1a4ec94a8a7b28d30efc37e2742f24.tar.gz
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guile integration
Diffstat (limited to 'mixlib/xmix_vm_handlers.c')
-rw-r--r--mixlib/xmix_vm_handlers.c1252
1 files changed, 1252 insertions, 0 deletions
diff --git a/mixlib/xmix_vm_handlers.c b/mixlib/xmix_vm_handlers.c
new file mode 100644
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+++ b/mixlib/xmix_vm_handlers.c
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+/* -*-c-*- -------------- xmix_vm_handlers.c :
+ * Implementation of the functions declared in xmix_vm_handlers.h
+ * ------------------------------------------------------------------
+ * Last change: Time-stamp: "01/08/26 04:01:54 jao"
+ * ------------------------------------------------------------------
+ * Copyright (C) 2001 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+
+#include "xmix_vm_handlers.h"
+
+/* available commands (in the same order as the type enum) */
+mix_vm_command_info_t commands_[] = {
+ { "help", cmd_help_, N_("Display this text"), "help [COMMAND]"},
+ { "load", cmd_load_, N_("Load a MIX code file"), "load FILENAME"},
+ { "edit", cmd_edit_, N_("Edit a MIXAL source file"), "edit [FILENAME]"},
+ { "pedit", cmd_pedit_, N_("Print the external editor command"), "pedit"},
+ { "sedit", cmd_sedit_, N_("Set the external editor command"),
+ "sedit COMMAND (e.g. emacs %s)"},
+ { "compile", cmd_compile_, N_("Compile a MIXAL source file"),
+ "compile [FILENAME]"},
+ { "pasm", cmd_pasm_, N_("Print the compile command"), "pasm"},
+ { "sasm", cmd_sasm_, N_("Set the compile command"),
+ "sasm COMMAND (e.g. mixasm -g -l %s)"},
+ { "run", cmd_run_, N_("Run loaded or given MIX code file"),
+ "run [FILENAME]"},
+ { "next", cmd_next_, N_("Execute next instruction(s)"),
+ "next [NO_OF_INS]"},
+ { "pc", cmd_pc_, N_("Print program counter value"), "pc" },
+ { "psym", cmd_psym_, N_("Print symbol value"), "psym [SYMBOLNAME]"},
+ { "preg", cmd_preg_, N_("Print register value"),
+ "preg [A | X | J | I[1-6]]"},
+ { "pflags", cmd_pflags_, N_("Print comparison and overflow flags"),
+ "pflags"},
+ { "pall", cmd_pall_, N_("Print all registers and flags"), "pall"},
+ { "pmem", cmd_pmem_, N_("Print memory contents in address range"),
+ "pmem FROM[-TO]"},
+ { "sreg", cmd_sreg_, N_("Set register value"),
+ "preg A | X | J | I[1-6] VALUE"},
+ { "scmp", cmd_scmp_, N_("Set comparison flag value"), "scmp L | E | G"},
+ { "sover", cmd_sover_, N_("Set overflow flag value"), "sover T | F" },
+ { "smem", cmd_smem_, N_("Set memory contents in given address"),
+ "smem ADDRESS VALUE"},
+ { "ssym", cmd_ssym_, N_("Set a symbol\'s value"), "ssym SYMBOL WEXPR"},
+ { "sbp", cmd_sbp_, N_("Set break point at given line"), "sbp LINENO"},
+ { "cbp", cmd_cbp_, N_("Clear break point at given line"), "cbp LINENO"},
+ { "sbpa", cmd_sbpa_, N_("Set break point at given address"),
+ "sbpa ADDRESS"},
+ { "cbpa", cmd_cbpa_, N_("Clear break point at given address"),
+ "cbpa ADDRESS"},
+ { "sbpr", cmd_sbpr_, N_("Set conditional breakpoint on register change"),
+ "sbpr A | X | J | I[1-6]"},
+ { "cbpr", cmd_cbpr_, N_("Clear conditional breakpoint on register change"),
+ "sbpr A | X | J | I[1-6]"},
+ { "sbpm", cmd_sbpm_, N_("Set conditional breakpoint on mem cell change"),
+ "sbpm ADDRESS"},
+ { "cbpm", cmd_cbpm_, N_("Clear conditional breakpoint on mem cell change"),
+ "cbpm ADDRESS"},
+ { "sbpc", cmd_sbpc_,
+ N_("Set conditional breakpoint on comparison flag change"), "sbpc"},
+ { "cbpc", cmd_cbpc_,
+ N_("Clear conditional breakpoint on comparison flag change"), "cbpc"},
+ { "sbpo", cmd_sbpo_,
+ N_("Set conditional breakpoint on overflow toggled"), "sbpo"},
+ { "cbpo", cmd_cbpo_,
+ N_("Set conditional breakpoint on overflow toggled"), "cbpo"},
+ { "cabp", cmd_cabp_, N_("Clear all breakpoints"), "cabp"},
+ { "weval", cmd_weval_, N_("Evaluate a given W-expression"), "weval WEXPR"},
+ { "w2d", cmd_w2d_, N_("Convert a MIX word to its decimal value"),
+ "w2d WORD"},
+ { "tracing", cmd_tracing_, N_("Turn on/off instruction tracing"),
+ "tracing [on|off]"},
+ { "pbt", cmd_pbt_, N_("Print backtrace of executed instructions"),
+ "pbt [INS_NO] (e.g pbt 5)"},
+ { "timing", cmd_timing_, N_("Turn on/off timing statistics"),
+ "timing [on|off]"},
+ { "devdir", cmd_devdir_, N_("Print/set devices directory"),
+ "devdir [NEWDIR]"},
+ { NULL, NULL, NULL, NULL},
+};
+
+/* trace current instruction */
+static void
+trace_ (mix_vm_cmd_dispatcher_t *dis)
+{
+ enum {BUFFER_LEN = 128};
+ static gchar STRINS[BUFFER_LEN];
+
+ const mix_src_file_t *file = mix_vm_get_src_file (dis->vm);
+ const gchar *line = "\n";
+ mix_address_t loc = mix_vm_get_prog_count (dis->vm);
+ mix_word_t ins = mix_vm_get_addr_contents (dis->vm, loc);
+ mix_ins_t fins;
+ mix_word_to_ins_uncheck (ins, fins);
+ mix_ins_to_string_in_buffer (&fins, STRINS, BUFFER_LEN);
+
+ if (file != NULL)
+ {
+ gulong b = mix_vm_get_break_lineno (dis->vm);
+ if (b > 0) line = mix_src_file_get_line (file, b);
+ }
+
+ fprintf (dis->out, "%d: [%-15s]\t%s", (gint)loc, STRINS, line);
+}
+
+/* run a program tracing executed instructions */
+static int
+run_and_trace_ (mix_vm_cmd_dispatcher_t *dis)
+{
+ int k = MIX_VM_OK;
+ if (!dis->trace)
+ return mix_vm_run (dis->vm);
+ else while (k == MIX_VM_OK)
+ {
+ trace_ (dis);
+ k = mix_vm_exec_next (dis->vm);
+ }
+ return k;
+}
+
+/* print time statistics */
+static void
+print_time_ (mix_vm_cmd_dispatcher_t *dis)
+{
+ dis->laptime = mix_vm_get_uptime(dis->vm) - dis->uptime;
+ dis->uptime += dis->laptime;
+ dis->progtime += dis->laptime;
+ if (dis->printtime)
+ fprintf
+ (dis->out,
+ _("Elapsed time: %ld /Total program time: %ld (Total uptime: %ld)\n"),
+ dis->laptime, dis->progtime, dis->uptime);
+}
+
+
+/* commands */
+static void
+print_help_ (gpointer key, gpointer val, gpointer data)
+{
+ mix_vm_command_info_t *info = (mix_vm_command_info_t *)val;
+ if (info)
+ fprintf ((FILE *)data, "%-15s%s\n", info->name, info->doc);
+}
+
+gboolean
+cmd_help_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (arg && strlen (arg) > 0)
+ {
+ int i;
+ mix_vm_command_info_t *info =
+ (mix_vm_command_info_t *)g_hash_table_lookup
+ (dis->commands, (gpointer)arg);
+ for (i = 0; info == NULL && commands_[i].name; i++)
+ if (!strcmp (commands_[i].name, arg)) info = commands_ + i;
+ if (info)
+ {
+ fprintf (dis->out , _("%-15s%s.\n%-15sUsage: %s\n"),
+ info->name, info->doc, "", info->usage);
+ return TRUE;
+ }
+ fprintf (dis->out, _("No commands match `%s'\n"), arg);
+ return FALSE;
+ }
+ else
+ {
+ int i = 0;
+ fprintf (dis->out, _("Possible commands are:\n"));
+ for (i = 0; commands_[i].name; ++i)
+ fprintf (dis->out, "%-15s%s\n", commands_[i].name, commands_[i].doc);
+ g_hash_table_foreach (dis->commands, print_help_, (gpointer)dis->out);
+ return TRUE;
+ }
+}
+
+gboolean
+cmd_load_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ errno = 0;
+ if (arg == NULL || *arg == '\0')
+ {
+ fputs (_("Missing file name\n"), dis->err);
+ return FALSE;
+ }
+ mix_eval_remove_symbols_from_table (dis->eval,
+ mix_vm_get_symbol_table (dis->vm));
+ if (!mix_vm_load_file (dis->vm, arg) )
+ {
+ fprintf (dis->err, _("Cannot load %s: "), arg);
+ if ( errno == 0 )
+ fputs (_("Wrong file format\n"), dis->err);
+ else
+ fprintf (dis->err, "%s\n", strerror (errno));
+ return FALSE;
+ }
+
+ if (dis->program != arg)
+ {
+ if (dis->program) g_free (dis->program);
+ dis->program = g_strdup (arg);
+ }
+
+ mix_eval_set_symbols_from_table (dis->eval,
+ mix_vm_get_symbol_table (dis->vm));
+
+ fprintf (dis->out, _("Program loaded. Start address: %d\n"),
+ mix_vm_get_prog_count (dis->vm));
+
+ dis->laptime = dis->progtime = 0;
+ return TRUE;
+}
+
+gboolean
+cmd_edit_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (dis->editor == NULL)
+ {
+ fputs (_("Editor not specified (set MDK_EDITOR)\n"), dis->err);
+ return FALSE;
+ }
+ if (!arg || *arg == '\0') arg = mix_vm_cmd_dispatcher_get_src_file_path (dis);
+ if (!arg)
+ {
+ fputs (_("MIXAL source file path not found\n"), dis->err);
+ return FALSE;
+ }
+ else
+ {
+ gchar *cmd = g_strdup_printf (dis->editor, arg);
+ fputs (cmd, dis->out);
+ system (cmd);
+ fputs (_(" ...done\n"), dis->out);
+ g_free (cmd);
+ return TRUE;
+ }
+}
+
+gboolean
+cmd_compile_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (dis->assembler == NULL)
+ {
+ fputs (_("MIX assembler not specified\n"), dis->err);
+ return FALSE;
+ }
+ if (!arg || *arg == '\0') arg = mix_vm_cmd_dispatcher_get_src_file_path (dis);
+ if (!arg)
+ {
+ fputs (_("MIXAL source file path not found\n"), dis->err);
+ return FALSE;
+ }
+ else
+ {
+ gchar *cmd = g_strdup_printf (dis->assembler, arg);
+ fputs (cmd, dis->out);
+ fputs ("\n", dis->out);
+ if (system (cmd) == EXIT_SUCCESS)
+ fputs (_("Successful compilation\n"), dis->out);
+ g_free (cmd);
+ return TRUE;
+ }
+}
+
+gboolean
+cmd_run_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (arg != NULL && *arg != '\0' && cmd_load_ (dis, arg) != TRUE)
+ return FALSE;
+
+ if (mix_vm_is_halted (dis->vm)) cmd_load_ (dis, dis->program);
+
+ fputs (_("Running ...\n"), dis->out);
+
+ switch (run_and_trace_ (dis))
+ {
+ case MIX_VM_HALT:
+ fputs (_("... done\n"), dis->out);
+ break;
+ case MIX_VM_BREAK:
+ {
+ gulong line = mix_vm_get_break_lineno (dis->vm);
+ if (line != 0)
+ fprintf (dis->out,
+ _("... stopped: breakpoint at line %ld (address %d)\n"),
+ line, mix_vm_get_prog_count (dis->vm));
+ else
+ fprintf (dis->out, _("... stopped: breakpoint at address %d\n"),
+ mix_vm_get_prog_count (dis->vm));
+ }
+ break;
+ case MIX_VM_COND_BREAK:
+ {
+ gulong line = mix_vm_get_break_lineno (dis->vm);
+ if (line != 0)
+ fprintf (dis->out, _("... stopped: %s (line %ld, address %d)\n"),
+ mix_vm_get_last_breakpoint_message (dis->vm),
+ line, mix_vm_get_prog_count (dis->vm));
+ else
+ fprintf (dis->out, _("... stopped: %s (address %d)\n"),
+ mix_vm_get_last_breakpoint_message (dis->vm),
+ mix_vm_get_prog_count (dis->vm));
+ }
+ break;
+ case MIX_VM_ERROR:
+ fputs (_("... error executing loaded file"), dis->err);
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ print_time_ (dis);
+
+ return TRUE;
+}
+
+gboolean
+cmd_next_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ int ins_no = 1;
+ int k;
+
+ if ( strlen (arg) != 0 )
+ {
+ int k = 0;
+ while (isdigit (arg[k]))
+ k++;
+ if (arg[k] != '\0')
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "next");
+ return FALSE;
+ }
+ ins_no = atoi (arg);
+ }
+
+ if (mix_vm_is_halted (dis->vm)) cmd_load_ (dis, dis->program);
+
+ while ( ins_no-- > 0 )
+ {
+ if (dis->trace) trace_ (dis);
+ k = mix_vm_exec_next (dis->vm);
+ if (k == MIX_VM_HALT)
+ {
+ fprintf (dis->err, _("End of program reached at address %d\n"),
+ mix_vm_get_prog_count (dis->vm));
+ break;
+ }
+ else if (k == MIX_VM_ERROR)
+ {
+ fprintf (dis->err, _("Error at address %d\n"),
+ mix_vm_get_prog_count (dis->vm));
+ break;
+ }
+ }
+ print_time_ (dis);
+
+ return TRUE;
+}
+
+gboolean
+cmd_pc_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ fprintf (dis->out, "Current address: %d\n", mix_vm_get_prog_count (dis->vm));
+ return TRUE;
+}
+
+gboolean
+cmd_psym_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ gboolean result = FALSE;
+ const mix_symbol_table_t *table = mix_eval_symbol_table (dis->eval);
+ if ( table == NULL )
+ fputs (_("Symbol table not available\n"), dis->err);
+ else if (arg != NULL && *arg != '\0')
+ {
+ if ( mix_symbol_table_is_defined (table, arg) )
+ {
+ mix_word_print_to_file (mix_symbol_table_value (table, arg),
+ NULL, dis->out);
+ putc ('\n', dis->out);
+ result = TRUE;
+ }
+ else
+ fprintf (dis->out, _("%s: symbol not defined\n"), arg);
+ }
+ else
+ {
+ mix_symbol_table_print (table, MIX_SYM_ROWS, dis->out, TRUE);
+ result = TRUE;
+ }
+
+ return result;
+}
+
+gboolean
+cmd_preg_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ mix_dump_context_set_opt (dis->dump, MIX_DUMP_NONE);
+ if ( strlen (arg) == 0 )
+ mix_dump_context_add_opt (dis->dump, MIX_DUMP_rALL);
+ else switch (*arg)
+ {
+ case 'A':
+ mix_dump_context_add_opt (dis->dump, MIX_DUMP_rA);
+ break;
+ case 'X':
+ mix_dump_context_add_opt (dis->dump, MIX_DUMP_rX);
+ break;
+ case 'J':
+ mix_dump_context_add_opt (dis->dump, MIX_DUMP_rJ);
+ break;
+ case 'I':
+ {
+ if ( strlen (arg) == 1 )
+ mix_dump_context_add_opt (dis->dump, MIX_DUMP_rIa);
+ else
+ {
+ static gint32 opt[] = { MIX_DUMP_rI1, MIX_DUMP_rI2,
+ MIX_DUMP_rI3, MIX_DUMP_rI4,
+ MIX_DUMP_rI5, MIX_DUMP_rI6
+ };
+ int i = arg[1] - '1';
+ if ( i < 0 || i > 5 )
+ {
+ fprintf (dis->err, _("Invalid I index: %d\n"), i);
+ return FALSE;
+ }
+ mix_dump_context_add_opt (dis->dump, opt[i]);
+ }
+ }
+ break;
+ default:
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ return FALSE;
+ }
+ mix_vm_dump (dis->vm, dis->dump);
+ return TRUE;
+}
+
+gboolean
+cmd_pflags_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ mix_dump_context_set_opt (dis->dump, MIX_DUMP_CMP | MIX_DUMP_OVER);
+ mix_vm_dump (dis->vm, dis->dump);
+ return TRUE;
+}
+
+gboolean
+cmd_pall_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ mix_dump_context_set_opt (dis->dump, MIX_DUMP_ALL_NOMEM);
+ mix_vm_dump (dis->vm, dis->dump);
+ return TRUE;
+}
+
+gboolean
+cmd_pmem_ (mix_vm_cmd_dispatcher_t *dis, const gchar *carg)
+{
+ glong begin = MIX_SHORT_ZERO, end = MIX_SHORT_ZERO;
+ int i = 0;
+ gboolean error = FALSE;
+ gchar *arg = NULL;
+
+ if ( strlen (carg) == 0 )
+ {
+ fputs (_("Missing memory address\n"), dis->err);
+ return FALSE;
+ }
+ arg = g_strdup (carg);
+ while (isdigit (arg[i]))
+ i++;
+ while (isspace (arg[i]))
+ i++;
+ if (arg[i] == '\0')
+ begin = end = atol (arg);
+ else if (arg[i] == '-')
+ {
+ gchar *narg;
+ arg[i++] = '\0';
+ begin = atol (arg);
+ narg = arg + i;
+ i = 0;
+ while (isdigit (narg[i]))
+ i++;
+ while (isspace (narg[i]))
+ i++;
+ if (narg[i] != '\0')
+ error = TRUE;
+ else
+ end = atol (narg);
+ }
+ else
+ error = TRUE;
+
+ if (error)
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "pmem");
+ }
+ else if ( end < begin || end > MIX_VM_CELL_NO - 1 )
+ {
+ fprintf (dis->err, _("Invalid range: %ld-%ld\n"), begin, end);
+ error = TRUE;
+ }
+ else
+ {
+ mix_dump_context_set_opt (dis->dump, MIX_DUMP_CELLS);
+ mix_dump_context_range (dis->dump, mix_short_new (begin),
+ mix_short_new (end + 1));
+ mix_vm_dump (dis->vm, dis->dump);
+ }
+ g_free (arg);
+ return !error;
+}
+
+gboolean
+cmd_sreg_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ int i = 0;
+ char reg = arg[0];
+ gboolean ok = TRUE;
+ long value;
+
+ i = (reg == 'I') ? 2 : 1;
+ ok = strlen (arg) > 2 && isspace (arg[i]);
+ if (ok)
+ {
+ while (isspace (arg[i])) i++;
+ ok = isdigit (arg[i]) || arg[i] == '+' || arg[i] == '-';
+ if (ok)
+ {
+ value = atol (arg + i);
+ if (arg[i] == '+' || arg[i] == '-') i++;
+ while (isdigit (arg[i])) i++;
+ ok = (arg[i] == '\0');
+ if (ok)
+ switch (reg)
+ {
+ case 'A':
+ mix_vm_set_rA (dis->vm, mix_word_new (value));
+ break;
+ case 'X':
+ mix_vm_set_rX (dis->vm, mix_word_new (value));
+ break;
+ case 'J':
+ if ( value >= 0 )
+ mix_vm_set_rJ (dis->vm, mix_short_new (value));
+ else
+ ok = FALSE;
+ break;
+ case 'I':
+ {
+ guint k = arg[1] - '0';
+ if ( k < 7 )
+ mix_vm_set_rI (dis->vm, k, mix_short_new (value));
+ else
+ ok = FALSE;
+ }
+ break;
+ default:
+ ok = FALSE;
+ }
+ }
+ }
+ if (!ok)
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "sreg");
+ }
+
+ return ok;
+}
+
+gboolean
+cmd_scmp_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ gboolean ok = (strlen (arg) == 1);
+ if (ok) switch (arg[0])
+ {
+ case 'L':
+ mix_vm_set_cmpflag (dis->vm, mix_LESS);
+ break;
+ case 'E':
+ mix_vm_set_cmpflag (dis->vm, mix_EQ);
+ break;
+ case 'G':
+ mix_vm_set_cmpflag (dis->vm, mix_GREAT);
+ break;
+ default:
+ ok = FALSE;
+ }
+ if (!ok)
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "scmp");
+ }
+
+ return ok;
+}
+
+gboolean
+cmd_sover_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ gboolean ok = (strlen (arg) == 1);
+ if (ok) switch (arg[0])
+ {
+ case 'T':
+ mix_vm_set_overflow (dis->vm, TRUE);
+ break;
+ case 'F':
+ mix_vm_set_overflow (dis->vm, FALSE);
+ break;
+ default:
+ ok = FALSE;
+ }
+ if (!ok)
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "sover");
+ }
+
+ return ok;
+}
+
+gboolean
+cmd_smem_ (mix_vm_cmd_dispatcher_t *dis, const gchar *carg)
+{
+ gboolean ok = (strlen (carg) > 2 && isdigit (carg[0]));
+ glong addr = -1;
+ glong value = 0;
+ int k = 0;
+ gchar *arg = NULL;
+
+ if (ok)
+ {
+ arg = g_strdup (carg);
+ while (isdigit (arg[k])) k++;
+ ok = isspace (arg[k]);
+ if (ok)
+ {
+ arg[k++] = '\0';
+ addr = atol (arg);
+ ok = addr < MIX_VM_CELL_NO;
+ }
+ if (ok)
+ {
+ while (isspace (arg[k])) k++;
+ value = atol (arg + k);
+ if ( arg[k] == '+' || arg[k] == '-' ) k++;
+ while (isdigit (arg[k])) k++;
+ ok = arg[k] == '\0';
+ }
+ }
+
+ if (ok)
+ mix_vm_set_addr_contents (dis->vm, mix_short_new (addr),
+ mix_word_new (value));
+ else
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "smem");
+ }
+ if (arg) g_free (arg);
+
+ return ok;
+}
+
+gboolean
+cmd_ssym_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ gboolean result = FALSE;
+ if (arg == NULL || strlen(arg) == 0)
+ {
+ fprintf (dis->err, _("Missing arguments\n"));
+ cmd_help_ (dis, "ssym");
+ }
+ else
+ {
+ gchar *a = g_strdup (arg);
+ gchar *s = strtok (a, " \t");
+ gchar *w = strtok (NULL, " \t");
+ if (w != NULL && strtok (NULL, " \t") == NULL)
+ {
+ cmd_weval_ (dis, w);
+ if (mix_eval_last_error (dis->eval) == MIX_EVAL_OK) {
+ mix_eval_set_symbol (dis->eval, s, mix_eval_value (dis->eval));
+ result = TRUE;
+ }
+ }
+ else
+ {
+ fprintf (dis->err, _("Wrong argument number\n"));
+ cmd_help_ (dis, "ssym");
+ }
+ g_free (a);
+ }
+ return result;
+}
+
+gboolean
+cmd_sbp_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ glong lineno;
+ glong k = 0;
+ while (isdigit (arg[k])) k++;
+ if (arg[k] != '\0')
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "sbp");
+ return FALSE;
+ }
+ lineno = atol (arg);
+ switch (k = mix_vm_set_breakpoint (dis->vm, lineno))
+ {
+ case MIX_VM_BP_INV_LINE:
+ fprintf (dis->err, _("Line number %ld too high\n"), lineno);
+ break;
+ case MIX_VM_BP_ERROR:
+ fputs (_("Could not set breakpoint. Internal error\n"), dis->err);
+ break;
+ case MIX_VM_BP_NDEBUG:
+ fputs (_("Could not set breakpoint. No debug info available\n"),
+ dis->err);
+ break;
+ default:
+ fprintf (dis->err, _("Breakpoint set at line %ld\n"), k);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+gboolean
+cmd_sbpa_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ glong address;
+ glong k = 0;
+ while (isdigit (arg[k])) k++;
+ if (arg[k] != '\0')
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "sbpa");
+ return FALSE;
+ }
+ address = atol (arg);
+ switch (mix_vm_set_breakpoint_address (dis->vm, address))
+ {
+ case MIX_VM_BP_INV_ADDRESS:
+ fprintf (dis->err, _("Invalid address %ld\n"), address);
+ break;
+ case MIX_VM_BP_ERROR:
+ fputs (_("Could not set breakpoint. Internal error\n"), dis->err);
+ break;
+ default:
+ fprintf (dis->err, _("Breakpoint set at address %ld\n"), address);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+gboolean
+cmd_cbp_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ glong lineno;
+ int k = 0;
+ while (isdigit (arg[k])) k++;
+ if (arg[k] != '\0')
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "cbp");
+ return FALSE;
+ }
+ lineno = atol (arg);
+ switch (mix_vm_clear_breakpoint (dis->vm, lineno))
+ {
+ case MIX_VM_BP_INV_LINE:
+ fprintf (dis->err, _("No breakpoint set at line %ld\n"), lineno);
+ break;
+ case MIX_VM_BP_ERROR:
+ fputs (_("Could not set breakpoint. Internal error\n"), dis->err);
+ break;
+ case MIX_VM_BP_NDEBUG:
+ fputs (_("No debug info available\n"), dis->err);
+ break;
+ case MIX_VM_BP_OK:
+ fprintf (dis->err, _("Breakpoint cleared at line %ld\n"), lineno);
+ return TRUE;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ return FALSE;
+}
+
+gboolean
+cmd_cbpa_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ glong address;
+ glong k = 0;
+ while (isdigit (arg[k])) k++;
+ if (arg[k] != '\0')
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "cbpa");
+ return FALSE;
+ }
+ address = atol (arg);
+ switch (mix_vm_clear_breakpoint_address (dis->vm, address))
+ {
+ case MIX_VM_BP_INV_ADDRESS:
+ fprintf (dis->err, _("Invalid address %ld\n"), address);
+ break;
+ case MIX_VM_BP_ERROR:
+ fputs (_("Could not clear breakpoint. Internal error\n"), dis->err);
+ break;
+ default:
+ fprintf (dis->err, _("Breakpoint cleared at address %ld\n"), address);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+
+gboolean
+cmd_cabp_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (strlen (arg) != 0)
+ {
+ fprintf (dis->err, _("Invalid argument: %s\n"), arg);
+ cmd_help_ (dis, "cabp");
+ return FALSE;
+ }
+ mix_vm_clear_all_breakpoints (dis->vm);
+ return TRUE;
+}
+
+gboolean
+cmd_weval_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if ( strlen (arg) == 0 )
+ {
+ cmd_help_ (dis, "weval");
+ return FALSE;
+ }
+
+ if (mix_eval_expression_with_loc (dis->eval, arg,
+ mix_vm_get_prog_count (dis->vm)) ==
+ MIX_EVAL_OK)
+ {
+ mix_word_print_to_file (mix_eval_value (dis->eval), NULL, dis->out);
+ putc ('\n', dis->out);
+ return TRUE;
+ }
+ else
+ {
+ gint pos = mix_eval_last_error_pos (dis->eval);
+ gint k, len = strlen (arg);
+ g_assert(pos > -1 && pos <= len);
+ for (k = 0; k<pos; ++k) fputc (arg[k], dis->err);
+ fputc ('\n', dis->err);
+ for (k = 0; k<pos; ++k) fputc (' ', dis->err);
+ for (k = pos; k < len; ++k) fputc (arg[k], dis->err);
+ fprintf (dis->err, _("\nEvaluation error: %s\n"),
+ mix_eval_last_error_string (dis->eval));
+ return FALSE;
+ }
+}
+
+gboolean
+cmd_w2d_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if ( strlen (arg) == 0 )
+ {
+ cmd_help_ (dis, "w2d");
+ return FALSE;
+ }
+ else
+ {
+ gchar *cp = g_strdup (arg), *a = cp;
+ mix_byte_t bytes[5] = {0, 0, 0, 0, 0};
+ gchar *b;
+ guint k = 0;
+ gboolean is_n = (a[0] == '-'), success = TRUE;
+ if (a[0] == '+' || a[0] == '-') ++a;
+ b = strtok (a, " \t");
+ while (b != NULL && k < 5)
+ {
+ if (strlen (b) != 2 || !isdigit(b[0]) || !isdigit(b[1]))
+ {
+ fprintf (dis->err, _("Incorrect byte specification: %s\n"), b);
+ success = FALSE;
+ b = NULL;
+ }
+ else
+ {
+ bytes[k++] = mix_byte_new (atoi (b));
+ b = strtok (NULL, " \t");
+ }
+ }
+ if (success)
+ {
+ if (strtok (NULL, "\t") != NULL)
+ {
+ fprintf (dis->err,
+ _("The expression %s does not fit in a word\n"), arg);
+ success = FALSE;
+ }
+ else
+ {
+ mix_word_t w = mix_bytes_to_word (bytes, k);
+ fprintf (dis->out, "%s%ld\n", is_n? "-":"+",
+ mix_word_magnitude (w));
+ }
+ }
+ g_free (cp);
+
+ return success;
+ }
+}
+
+gboolean
+cmd_tracing_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ static const gchar *ON = "on";
+ static const gchar *OFF = "off";
+ if (arg && !strcmp (arg, ON))
+ {
+ dis->trace = TRUE;
+ if (dis->config) mix_config_update (dis->config, TRACING_KEY_, ON);
+ }
+ else if (arg && !strcmp (arg, OFF))
+ {
+ dis->trace = FALSE;
+ if (dis->config) mix_config_update (dis->config, TRACING_KEY_, OFF);
+ }
+ else if (arg && !strlen (arg))
+ {
+ fprintf (dis->out, "Instruction tracing is currently set %s\n",
+ dis->trace ? "ON" : "OFF");
+ }
+ else
+ cmd_help_ (dis, "tracing");
+ return TRUE;
+}
+
+gboolean
+cmd_timing_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ static const gchar *ON = "on";
+ static const gchar *OFF = "off";
+ if (arg && !strcmp (arg, ON))
+ {
+ dis->printtime = TRUE;
+ if (dis->config) mix_config_update (dis->config, TIMING_KEY_, ON);
+ }
+ else if (arg && !strcmp (arg, OFF))
+ {
+ dis->printtime = FALSE;
+ if (dis->config) mix_config_update (dis->config, TIMING_KEY_, OFF);
+ }
+ else if (arg && !strlen (arg))
+ {
+ print_time_ (dis);
+ }
+ else
+ cmd_help_ (dis, "timing");
+ return TRUE;
+}
+
+
+gboolean
+cmd_pedit_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ const gchar *ed = mix_vm_cmd_dispatcher_get_editor (dis);
+ if (dis)
+ fprintf (dis->out, "Edit command: %s\n", ed);
+ else
+ fprintf (dis->out, "Edit command not set (use sedit)\n");
+ return TRUE;
+}
+
+gboolean
+cmd_sedit_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (!arg || !strlen (arg)) return cmd_help_ (dis, "sedit");
+ mix_vm_cmd_dispatcher_set_editor (dis, arg);
+ return TRUE;
+}
+
+gboolean
+cmd_pasm_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ const gchar *ed = mix_vm_cmd_dispatcher_get_assembler (dis);
+ if (dis)
+ fprintf (dis->out, "Compile command: %s\n", ed);
+ else
+ fprintf (dis->out, "Compile command not set (use sasm)\n");
+ return TRUE;
+}
+
+gboolean
+cmd_sasm_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (!arg || !strlen (arg)) return cmd_help_ (dis, "sasm");
+ mix_vm_cmd_dispatcher_set_assembler (dis, arg);
+ return TRUE;
+}
+
+gboolean
+cmd_devdir_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (!arg || !strlen (arg))
+ fprintf (dis->out, "Device directory: %s\n", mix_device_get_dir ());
+ else if (mix_device_set_dir (arg) && dis->config)
+ mix_config_set_devices_dir (dis->config, arg);
+ return TRUE;
+}
+
+
+static const gint INVALID_REG_ = -2;
+
+static mix_predicate_type_t
+get_reg_pred_ (const gchar *arg)
+{
+ mix_predicate_type_t pred = INVALID_REG_;
+
+ switch (*arg)
+ {
+ case 'A':
+ pred = MIX_PRED_REG_A;
+ break;
+ case 'X':
+ pred = MIX_PRED_REG_X;
+ break;
+ case 'J':
+ pred = MIX_PRED_REG_J;
+ break;
+ case 'I':
+ {
+ if ( strlen (arg) == 2 )
+ {
+ int i = arg[1] - '1';
+ if (i >= 0 && i < 6)
+ pred = MIX_PRED_REG_I1 - 1 + i;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ return pred;
+}
+
+gboolean
+cmd_sbpr_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ mix_predicate_type_t pred = get_reg_pred_ (arg);
+ if (pred != INVALID_REG_)
+ {
+ mix_vm_set_conditional_breakpoint (dis->vm, dis->preds[pred]);
+ fprintf (dis->out, _("Conditional breakpoint on r%s change set\n"), arg);
+ return TRUE;
+ }
+ else
+ {
+ fprintf (dis->err, "Invalid argument %s\n", arg);
+ return FALSE;
+ }
+}
+
+gboolean
+cmd_cbpr_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ mix_predicate_type_t pred = get_reg_pred_ (arg);
+ if (pred != INVALID_REG_)
+ {
+ if (mix_vm_clear_conditional_breakpoint (dis->vm, dis->preds[pred]))
+ fprintf (dis->out,
+ _("Conditional breakpoint on r%s change removed\n"),
+ arg);
+ else
+ fprintf (dis->err, _("No breakpoint set on r%s change\n"), arg);
+ return TRUE;
+ }
+ else
+ {
+ fprintf (dis->err, _("Invalid argument %s\n"), arg);
+ return FALSE;
+ }
+}
+
+gboolean
+cmd_sbpm_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ gint add = atoi (arg);
+ gpointer key, value;
+ if (add < 0 || add > MIX_VM_CELL_NO)
+ {
+ fprintf (dis->out, _("Invalid memory address: %s\n"), arg);
+ return FALSE;
+ }
+ if (!g_hash_table_lookup_extended (dis->mem_preds, GINT_TO_POINTER (add),
+ &key, &value))
+ {
+ mix_predicate_t *new_pred = mix_predicate_new (MIX_PRED_MEM);
+ mix_predicate_set_mem_address (new_pred, add);
+ g_hash_table_insert (dis->mem_preds,
+ GINT_TO_POINTER (add), (gpointer)new_pred);
+ mix_vm_set_conditional_breakpoint (dis->vm, new_pred);
+ }
+ fprintf (dis->out, _("Conditional breakpoint on mem cell no. %d set\n"), add);
+ return TRUE;
+}
+
+gboolean
+cmd_cbpm_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ gint add = atoi (arg);
+ gpointer key, value;
+ if (add < 0 || add > MIX_VM_CELL_NO)
+ {
+ fprintf (dis->out, _("Invalid memory address: %s\n"), arg);
+ return FALSE;
+ }
+ if (g_hash_table_lookup_extended (dis->mem_preds, GINT_TO_POINTER (add),
+ &key, &value))
+ {
+ g_hash_table_remove (dis->mem_preds, key);
+ mix_vm_clear_conditional_breakpoint (dis->vm, (mix_predicate_t *)value);
+ mix_predicate_delete ((mix_predicate_t *)value);
+ fprintf (dis->out,
+ _("Conditional breakpoint on mem cell no. %d removed\n"), add);
+ }
+ else
+ {
+ fprintf (dis->out, _("No conditional breakpoint set at address %d\n"),
+ add);
+ }
+ return TRUE;
+}
+
+gboolean
+cmd_sbpo_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (arg && strlen (arg))
+ fprintf (dis->err, _("Unexpected argument: %s\n"), arg);
+ else
+ {
+ mix_vm_set_conditional_breakpoint (dis->vm, dis->preds[MIX_PRED_OVER]);
+ fprintf (dis->out,
+ _("Conditional breakpoint on overflow toggled set\n"));
+ }
+ return TRUE;
+}
+
+gboolean
+cmd_cbpo_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (arg && strlen (arg))
+ fprintf (dis->err, _("Unexpected argument: %s\n"), arg);
+ else
+ {
+ if (mix_vm_clear_conditional_breakpoint
+ (dis->vm, dis->preds[MIX_PRED_OVER]))
+ fprintf (dis->out,
+ _("Conditional breakpoint on overflow toggled removed.\n"));
+ else
+ fprintf (dis->err, _("No breakpoint set on overflow toggle\n"));
+ }
+ return TRUE;
+}
+
+gboolean
+cmd_sbpc_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (arg && strlen (arg))
+ fprintf (dis->err, _("Unexpected argument: %s\n"), arg);
+ else
+ {
+ mix_vm_set_conditional_breakpoint (dis->vm, dis->preds[MIX_PRED_CMP]);
+ fprintf (dis->out,
+ _("Conditional breakpoint on comparison flag changed set.\n"));
+ }
+ return TRUE;
+}
+
+gboolean
+cmd_cbpc_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ if (arg && strlen (arg))
+ fprintf (dis->err, _("Unexpected argument: %s\n"), arg);
+ else
+ {
+ if (mix_vm_clear_conditional_breakpoint
+ (dis->vm, dis->preds[MIX_PRED_CMP]))
+ fprintf
+ (dis->out,
+ _("Conditional breakpoint on comparison flag changed removed.\n"));
+ else
+ fprintf (dis->err, _("No breakpoint set on comparison flag change\n"));
+ }
+ return TRUE;
+}
+
+gboolean
+cmd_pbt_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg)
+{
+ enum {SIZE = 256};
+ static gchar BUFFER[SIZE];
+ gint no = atoi (arg);
+ gint k = 0, address;
+ guint line;
+ const mix_src_file_t *file = mix_vm_get_src_file (dis->vm);
+ char *name = file ? g_basename (mix_src_file_get_path (file)) : NULL;
+
+ const GSList *add = mix_vm_get_backtrace (dis->vm);
+ while (add && (no == 0 || k < no))
+ {
+ BUFFER[0] = '\0';
+ address = GPOINTER_TO_INT (add->data);
+ line = mix_vm_get_address_lineno (dis->vm, address);
+ if (line && file)
+ {
+ int j = 0;
+ snprintf (BUFFER, SIZE, "%s", mix_src_file_get_line (file, line));
+ while (!isspace (BUFFER[j])) j++;
+ BUFFER[j] = '\0';
+ }
+ if (strlen (BUFFER) == 0) snprintf (BUFFER, SIZE, "%d", address);
+ fprintf (dis->out, "#%d\t%s\tin %s%s:%d\n", k, BUFFER, name,
+ MIX_SRC_DEFEXT, line);
+ ++k;
+ add = add->next;
+ }
+ /* if (name) g_free (name); */
+ return TRUE;
+}
+