int
muf_debugger(dbref player, dbref program, const char *text, struct frame *fr)
{
char cmd[BUFFER_LEN];
char buf[BUFFER_LEN];
char *ptr, *ptr2, *arg;
struct inst *pinst;
int i, j, cnt;
while (isspace(*text)) text++;
strcpy(cmd, text);
ptr = cmd + strlen(cmd);
if (ptr > cmd) ptr--;
while (ptr >= cmd && isspace(*ptr)) *ptr-- = '\0';
for (arg = cmd; *arg && !isspace(*arg); arg++);
if (*arg) *arg++ = '\0';
if (!*cmd && fr->brkpt.lastcmd) {
strcpy(cmd, fr->brkpt.lastcmd);
} else {
if (fr->brkpt.lastcmd)
free(fr->brkpt.lastcmd);
if (*cmd)
fr->brkpt.lastcmd = string_dup(cmd);
}
/* delete triggering breakpoint, if it's only temp. */
j = fr->brkpt.breaknum;
if (j >= 0 && fr->brkpt.temp[j]) {
for (j++; j < fr->brkpt.count; j++) {
fr->brkpt.temp[j-1] = fr->brkpt.temp[j];
fr->brkpt.level[j-1] = fr->brkpt.level[j];
fr->brkpt.line[j-1] = fr->brkpt.line[j];
fr->brkpt.linecount[j-1] = fr->brkpt.linecount[j];
fr->brkpt.pc[j-1] = fr->brkpt.pc[j];
fr->brkpt.pccount[j-1] = fr->brkpt.pccount[j];
fr->brkpt.prog[j-1] = fr->brkpt.prog[j];
}
fr->brkpt.count--;
}
fr->brkpt.breaknum = -1;
if (!string_compare(cmd, "cont")) {
} else if (!string_compare(cmd, "finish")) {
if (fr->brkpt.count >= MAX_BREAKS) {
anotify_nolisten(player, CFAIL "Cannot finish because there are too many breakpoints set.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = fr->system.top - 1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
return 0;
} else if (!string_compare(cmd, "stepi")) {
i = atoi(arg);
if (!i) i = 1;
if (fr->brkpt.count >= MAX_BREAKS) {
anotify_nolisten(player, CFAIL "Cannot stepi because there are too many breakpoints set.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = -1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = i;
fr->brkpt.prog[j] = NOTHING;
fr->brkpt.bypass = 1;
return 0;
} else if (!string_compare(cmd, "step")) {
i = atoi(arg);
if (!i) i = 1;
if (fr->brkpt.count >= MAX_BREAKS) {
anotify_nolisten(player, CFAIL "Cannot step because there are too many breakpoints set.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = -1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = i;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = NOTHING;
fr->brkpt.bypass = 1;
return 0;
} else if (!string_compare(cmd, "nexti")) {
i = atoi(arg);
if (!i) i = 1;
if (fr->brkpt.count >= MAX_BREAKS) {
anotify_nolisten(player, CFAIL "Cannot nexti because there are too many breakpoints set.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = fr->system.top;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = i;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
return 0;
} else if (!string_compare(cmd, "next")) {
i = atoi(arg);
if (!i) i = 1;
if (fr->brkpt.count >= MAX_BREAKS) {
anotify_nolisten(player, CFAIL "Cannot next because there are too many breakpoints set.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = fr->system.top;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = i;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
return 0;
} else if (!string_compare(cmd, "exec")) {
if (fr->brkpt.count >= MAX_BREAKS) {
anotify_nolisten(player, CFAIL "Cannot finish because there are too many breakpoints set.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
if (!(pinst = funcname_to_pc(program, arg))) {
anotify_nolisten(player, CINFO "I don't know a function by that name.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
if (fr->system.top >= STACK_SIZE) {
anotify_nolisten(player, CFAIL "That would exceed the system stack size for this program.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
fr->system.st[fr->system.top].progref = program;
fr->system.st[fr->system.top++].offset = fr->pc;
fr->pc = pinst;
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = fr->system.top - 1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
return 0;
} else if (!string_compare(cmd, "prim")) {
if (fr->brkpt.count >= MAX_BREAKS) {
anotify_nolisten(player, CFAIL "Cannot finish because there are too many breakpoints set.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
if (!(i = primitive(arg))) {
anotify_nolisten(player, CINFO "I don't recognize that primitive.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
if (fr->system.top >= STACK_SIZE) {
anotify_nolisten(player, CFAIL "That would exceed the system stack size for this program.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
shstr.data[0] = '\0';
shstr.links = 1;
shstr.length= strlen(shstr.data);
primset[0].type = PROG_FUNCTION;
primset[0].line = 0;
primset[0].data.string = &shstr;
primset[1].type = PROG_PRIMITIVE;
primset[1].line = 0;
primset[1].data.number = i;
primset[2].type = PROG_PRIMITIVE;
primset[2].line = 0;
primset[2].data.number = primitive("EXIT");
fr->system.st[fr->system.top].progref = program;
fr->system.st[fr->system.top++].offset = fr->pc;
fr->pc = primset;
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = fr->system.top - 1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
return 0;
} else if (!string_compare(cmd, "break")) {
add_muf_read_event(player, program, fr);
if (fr->brkpt.count >= MAX_BREAKS) {
anotify_nolisten(player, CFAIL "Too many breakpoints set.", 1);
return 0;
}
if (number(arg)) {
i = atoi(arg);
} else {
if (!(pinst = funcname_to_pc(program, arg))) {
anotify_nolisten(player, CINFO "I don't know a function by that name.", 1);
return 0;
} else {
i = pinst->line;
}
}
if (!i) i = fr->pc->line;
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 0;
fr->brkpt.level[j] = -1;
fr->brkpt.line[j] = i;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
anotify_nolisten(player, CSUCC "Breakpoint set.", 1);
return 0;
} else if (!string_compare(cmd, "delete")) {
add_muf_read_event(player, program, fr);
i = atoi(arg);
if (!i) {
anotify_nolisten(player, CINFO "Which breakpoint did you want to delete?", 1);
return 0;
}
if (i < 1 || i > fr->brkpt.count) {
anotify_nolisten(player, CFAIL "No such breakpoint.", 1);
return 0;
}
j = i - 1;
for (j++; j < fr->brkpt.count; j++) {
fr->brkpt.temp[j-1] = fr->brkpt.temp[j];
fr->brkpt.level[j-1] = fr->brkpt.level[j];
fr->brkpt.line[j-1] = fr->brkpt.line[j];
fr->brkpt.linecount[j-1] = fr->brkpt.linecount[j];
fr->brkpt.pc[j-1] = fr->brkpt.pc[j];
fr->brkpt.pccount[j-1] = fr->brkpt.pccount[j];
fr->brkpt.prog[j-1] = fr->brkpt.prog[j];
}
fr->brkpt.count--;
anotify_nolisten(player, CSUCC "Breakpoint deleted.", 1);
return 0;
} else if (!string_compare(cmd, "breaks")) {
anotify_nolisten(player, CINFO "Breakpoints:", 1);
for (i = 0; i < fr->brkpt.count; i++) {
ptr = unparse_breakpoint(fr, i);
notify_nolisten(player, ptr, 1);
}
anotify_nolisten(player, CINFO "Done.", 1);
add_muf_read_event(player, program, fr);
return 0;
} else if (!string_compare(cmd, "where")) {
i = atoi(arg);
muf_backtrace(player, program, i, fr);
add_muf_read_event(player, program, fr);
return 0;
} else if (!string_compare(cmd, "stack")) {
anotify_nolisten(player, CINFO "*Argument stack top*", 1);
i = atoi(arg);
if (!i) i = STACK_SIZE;
ptr = "";
for (j = fr->argument.top; j>0 && i-->0;) {
cnt = 0;
do {
strcpy(buf, ptr);
ptr = insttotext(&fr->argument.st[--j], 4000, program);
cnt++;
} while (!string_compare(ptr, buf) && j>0);
if (cnt > 1)
notify_fmt(player, " [repeats %d times]", cnt);
if (string_compare(ptr, buf))
notify_fmt(player, "%3d) %s", j+1, ptr);
}
anotify_nolisten(player, CINFO "Done.", 1);
add_muf_read_event(player, program, fr);
return 0;
} else if (!string_compare(cmd, "list") ||
!string_compare(cmd, "listi")) {
int startline, endline;
startline = endline = 0;
add_muf_read_event(player, program, fr);
if ((ptr2 = (char *)index(arg, ','))) {
*ptr2++ = '\0';
} else {
ptr2 = "";
}
if (!*arg) {
if (fr->brkpt.lastlisted) {
startline = fr->brkpt.lastlisted + 1;
} else {
startline = fr->pc->line;
}
endline = startline + 15;
} else {
if (!number(arg)) {
if (!(pinst = funcname_to_pc(program, arg))) {
anotify_nolisten(player, CINFO "I don't know a function by that name. (starting arg, 1)", 1);
return 0;
} else {
startline = pinst->line;
endline = startline + 15;
}
} else {
if (*ptr2) {
endline = startline = atoi(arg);
} else {
startline = atoi(arg) - 7;
endline = startline + 15;
}
}
}
if (*ptr2) {
if (!number(ptr2)) {
if (!(pinst = funcname_to_pc(program, ptr2))) {
anotify_nolisten(player, CINFO "I don't know a function by that name. (ending arg, 1)", 1);
return 0;
} else {
endline = pinst->line;
}
} else {
endline = atoi(ptr2);
}
}
i = (DBFETCH(program)->sp.program.code +
DBFETCH(program)->sp.program.siz - 1)->line;
if (startline > i) {
anotify_nolisten(player, CFAIL "Starting line is beyond end of program.", 1);
return 0;
}
if (startline < 1) startline = 1;
if (endline > i) endline = i;
if (endline < startline) endline = startline;
anotify_nolisten(player, CINFO "Listing:", 1);
if (!string_compare(cmd, "listi")) {
for (i = startline; i <= endline; i++) {
pinst = linenum_to_pc(program, i);
if (pinst) {
sprintf(buf, "line %d: %s", i, (i == fr->pc->line) ?
show_line_prims(program, fr->pc, STACK_SIZE, 1) :
show_line_prims(program, pinst, STACK_SIZE, 0));
notify_nolisten(player, buf, 1);
}
}
} else {
list_proglines(player, program, fr, startline, endline);
}
fr->brkpt.lastlisted = endline;
anotify_nolisten(player, CINFO "Done.", 1);
return 0;
} else if (!string_compare(cmd, "quit")) {
anotify_nolisten(player, CINFO "Halting execution.", 1);
return 1;
} else if (!string_compare(cmd, "trace")) {
add_muf_read_event(player, program, fr);
if (!string_compare(arg, "on")) {
fr->brkpt.showstack = 1;
anotify_nolisten(player, CSUCC "Trace turned on.", 1);
} else if (!string_compare(arg, "off")) {
fr->brkpt.showstack = 0;
anotify_nolisten(player, CSUCC "Trace turned off.", 1);
} else {
sprintf(buf, CINFO "Trace is currently %s.",
fr->brkpt.showstack? "on" : "off");
anotify_nolisten(player, buf, 1);
}
return 0;
} else if (!string_compare(cmd, "words")) {
list_program_functions(player, program, arg);
add_muf_read_event(player, program, fr);
return 0;
} else if (!string_compare(cmd, "print")) {
debug_printvar(player, fr, arg);
add_muf_read_event(player, program, fr);
return 0;
} else if (!string_compare(cmd, "push")) {
push_arg(player, fr, arg);
add_muf_read_event(player, program, fr);
return 0;
} else if (!string_compare(cmd, "pop")) {
add_muf_read_event(player, program, fr);
if (fr->argument.top < 1) {
anotify_nolisten(player, CFAIL "Nothing to pop.", 1);
return 0;
}
fr->argument.top--;
CLEAR(fr->argument.st + fr->argument.top);
anotify_nolisten(player, CSUCC "Stack item popped.", 1);
return 0;
} else if (!string_compare(cmd, "help")) {
notify_nolisten(player, "cont continues execution until a breakpoint is hit.", 1);
notify_nolisten(player, "finish completes execution of current function.", 1);
notify_nolisten(player, "step [NUM] executes one (or NUM, 1) lines of muf.", 1);
notify_nolisten(player, "stepi [NUM] executes one (or NUM, 1) muf instructions.", 1);
notify_nolisten(player, "next [NUM] like step, except skips CALL and EXECUTE.", 1);
notify_nolisten(player, "nexti [NUM] like stepi, except skips CALL and EXECUTE.", 1);
notify_nolisten(player, "break LINE# sets breakpoint at given LINE number.", 1);
notify_nolisten(player, "break FUNCNAME sets breakpoint at start of given function.", 1);
notify_nolisten(player, "breaks lists all currently set breakpoints.", 1);
notify_nolisten(player, "delete NUM deletes breakpoint by NUM, as listed by 'breaks'", 1);
notify_nolisten(player, "where [LEVS] displays function call backtrace of up to num levels deep.", 1);
notify_nolisten(player, "stack [NUM] shows the top num items on the stack.", 1);
notify_nolisten(player, "print v# displays the value of given global variable #.", 1);
notify_nolisten(player, "print lv# displays the value of given local variable #.", 1);
notify_nolisten(player, "trace [on|off] turns on/off debug stack tracing.", 1);
notify_nolisten(player, "list [L1,[L2]] lists source code of given line range.", 1);
notify_nolisten(player, "list FUNCNAME lists source code of given function.", 1);
notify_nolisten(player, "listi [L1,[L2]] lists instructions in given line range.", 1);
notify_nolisten(player, "listi FUNCNAME lists instructions in given function.", 1);
notify_nolisten(player, "words lists all function word names in program.", 1);
notify_nolisten(player, "words PATTERN lists all function word names that match PATTERN.", 1);
notify_nolisten(player, "exec FUNCNAME calls given function with the current stack data.", 1);
notify_nolisten(player, "prim PRIMITIVE executes given primitive with current stack data.", 1);
notify_nolisten(player, "push DATA pushes an int, dbref, var, or string onto the stack.", 1);
notify_nolisten(player, "pop pops top data item off the stack.", 1);
notify_nolisten(player, "help displays this help screen.", 1);
notify_nolisten(player, "quit stop execution here.", 1);
add_muf_read_event(player, program, fr);
return 0;
} else {
anotify_nolisten(player, CINFO "I don't understand that debugger command. Type 'help' for help.", 1);
add_muf_read_event(player, program, fr);
return 0;
}
return 0;
}
/**
* Implementation of the MUF debugger
*
* This implements the command parsing for the MUF debugger. It also clears
* temporary bookmarks if this was triggered from a temporary one.
*
* This relies on some static globals, so it is not threadsafe. If the
* 'prim' debugger command is ever used to trigger the MUF debugger somehow
* in a recursive fashion, and then you call 'prim' again, it will probably
* cause havock.
*
* @param descr the descriptor of the debugging player
* @param player the debugging player
* @param program the program we are debugging
* @param text the input text from the user
* @param fr the current frame pointer
* @return boolean true if the program should exit, false if not
*/
int
muf_debugger(int descr, dbref player, dbref program, const char *text, struct frame *fr)
{
char cmd[BUFFER_LEN];
char buf[BUFFER_LEN];
char buf2[BUFFER_LEN];
char *ptr, *ptr2, *arg;
struct inst *pinst;
int i, j, cnt;
static struct inst primset[5];
static struct muf_proc_data temp_muf_proc_data = {
"__Temp_Debugger_Proc",
0,
0,
NULL
};
/*
* Basic massaging of the input - clearing spaces, finding the
* argument.
*/
skip_whitespace(&text);
strcpyn(cmd, sizeof(cmd), text);
ptr = cmd;
remove_ending_whitespace(&ptr);
for (arg = cmd; *arg && !isspace(*arg); arg++) ;
if (*arg)
*arg++ = '\0';
/* Empty command means repeat last command, if available */
if (!*cmd && fr->brkpt.lastcmd) {
strcpyn(cmd, sizeof(cmd), fr->brkpt.lastcmd);
} else {
free(fr->brkpt.lastcmd);
if (*cmd)
fr->brkpt.lastcmd = strdup(cmd);
}
/* delete triggering breakpoint, if it's only temp. */
j = fr->brkpt.breaknum;
if (j >= 0 && fr->brkpt.temp[j]) {
for (j++; j < fr->brkpt.count; j++) {
fr->brkpt.temp[j - 1] = fr->brkpt.temp[j];
fr->brkpt.level[j - 1] = fr->brkpt.level[j];
fr->brkpt.line[j - 1] = fr->brkpt.line[j];
fr->brkpt.linecount[j - 1] = fr->brkpt.linecount[j];
fr->brkpt.pc[j - 1] = fr->brkpt.pc[j];
fr->brkpt.pccount[j - 1] = fr->brkpt.pccount[j];
fr->brkpt.prog[j - 1] = fr->brkpt.prog[j];
}
fr->brkpt.count--;
}
fr->brkpt.breaknum = -1;
/**
* @TODO This giant if statement is pretty gnarly; we'd be better
* of looping over an array of callbacks to break this up
* nicer and make it more extensible.
*/
if (!strcasecmp(cmd, "cont")) {
/* Nothing to do -- this will continue to next breakpoint */
} else if (!strcasecmp(cmd, "finish")) {
if (fr->brkpt.count >= MAX_BREAKS) {
notify_nolisten(player,
"Cannot finish because there are too many breakpoints set.", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = fr->system.top - 1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
return 0;
} else if (!strcasecmp(cmd, "stepi")) {
i = atoi(arg);
if (!i)
i = 1;
if (fr->brkpt.count >= MAX_BREAKS) {
notify_nolisten(player, "Cannot stepi because there are too many breakpoints set.",
1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = -1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = i;
fr->brkpt.prog[j] = NOTHING;
fr->brkpt.bypass = 1;
return 0;
} else if (!strcasecmp(cmd, "step")) {
i = atoi(arg);
if (!i)
i = 1;
if (fr->brkpt.count >= MAX_BREAKS) {
notify_nolisten(player, "Cannot step because there are too many breakpoints set.",
1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = -1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = i;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = NOTHING;
fr->brkpt.bypass = 1;
return 0;
} else if (!strcasecmp(cmd, "nexti")) {
i = atoi(arg);
if (!i)
i = 1;
if (fr->brkpt.count >= MAX_BREAKS) {
notify_nolisten(player, "Cannot nexti because there are too many breakpoints set.",
1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = fr->system.top;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = i;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
return 0;
} else if (!strcasecmp(cmd, "next")) {
i = atoi(arg);
if (!i)
i = 1;
if (fr->brkpt.count >= MAX_BREAKS) {
notify_nolisten(player, "Cannot next because there are too many breakpoints set.",
1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = fr->system.top;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = i;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
return 0;
} else if (!strcasecmp(cmd, "exec")) {
if (fr->brkpt.count >= MAX_BREAKS) {
notify_nolisten(player,
"Cannot finish because there are too many breakpoints set.", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
if (!(pinst = funcname_to_pc(program, arg))) {
notify_nolisten(player, "I don't know a function by that name.", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
if (fr->system.top >= STACK_SIZE) {
notify_nolisten(player,
"That would exceed the system stack size for this program.", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
fr->system.st[fr->system.top].progref = program;
fr->system.st[fr->system.top++].offset = fr->pc;
fr->pc = pinst;
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = fr->system.top - 1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
return 0;
} else if (!strcasecmp(cmd, "prim")) {
/*
* @TODO The way this works is a little funky. It looks like
* it would be possible to cause some weird havoc if we
* manage to run a primitive that in turn triggers muf_debugger
*
* I am uncertain if this is possible; looks like the only
* way it could happen is by typing 'prim debugger_break'
* but I don't know much about about how muf_debugger is
* triggered. Some digging should be done to make this
* safe.
*
* Even better would be to not use statics for this somehow
* without introducing a memory leak. (tanabi)
*/
if (fr->brkpt.count >= MAX_BREAKS) {
notify_nolisten(player,
"Cannot finish because there are too many breakpoints set.", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
if (!primitive(arg)) {
notify_nolisten(player, "I don't recognize that primitive.", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
if (fr->system.top >= STACK_SIZE) {
notify_nolisten(player,
"That would exceed the system stack size for this program.", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
primset[0].type = PROG_FUNCTION;
primset[0].line = 0;
primset[0].data.mufproc = &temp_muf_proc_data;
primset[0].data.mufproc->vars = 0;
primset[0].data.mufproc->args = 0;
primset[0].data.mufproc->varnames = NULL;
primset[1].type = PROG_PRIMITIVE;
primset[1].line = 0;
primset[1].data.number = get_primitive(arg);
primset[2].type = PROG_PRIMITIVE;
primset[2].line = 0;
primset[2].data.number = IN_RET;
/* primset[3].data.number = primitive("EXIT"); */
fr->system.st[fr->system.top].progref = program;
fr->system.st[fr->system.top++].offset = fr->pc;
fr->pc = &primset[1];
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 1;
fr->brkpt.level[j] = -1;
fr->brkpt.line[j] = -1;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = &primset[2];
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
fr->brkpt.bypass = 1;
fr->brkpt.dosyspop = 1;
return 0;
} else if (!strcasecmp(cmd, "break")) {
add_muf_read_event(descr, player, program, fr);
if (fr->brkpt.count >= MAX_BREAKS) {
notify_nolisten(player, "Too many breakpoints set.", 1);
return 0;
}
if (number(arg)) {
i = atoi(arg);
} else {
if (!(pinst = funcname_to_pc(program, arg))) {
notify_nolisten(player, "I don't know a function by that name.", 1);
return 0;
} else {
i = pinst->line;
}
}
if (!i)
i = fr->pc->line;
j = fr->brkpt.count++;
fr->brkpt.temp[j] = 0;
fr->brkpt.level[j] = -1;
fr->brkpt.line[j] = i;
fr->brkpt.linecount[j] = -2;
fr->brkpt.pc[j] = NULL;
fr->brkpt.pccount[j] = -2;
fr->brkpt.prog[j] = program;
notify_nolisten(player, "Breakpoint set.", 1);
return 0;
} else if (!strcasecmp(cmd, "delete")) {
add_muf_read_event(descr, player, program, fr);
i = atoi(arg);
if (!i) {
notify_nolisten(player, "Which breakpoint did you want to delete?", 1);
return 0;
}
if (i < 1 || i > fr->brkpt.count) {
notify_nolisten(player, "No such breakpoint.", 1);
return 0;
}
j = i - 1;
for (j++; j < fr->brkpt.count; j++) {
fr->brkpt.temp[j - 1] = fr->brkpt.temp[j];
fr->brkpt.level[j - 1] = fr->brkpt.level[j];
fr->brkpt.line[j - 1] = fr->brkpt.line[j];
fr->brkpt.linecount[j - 1] = fr->brkpt.linecount[j];
fr->brkpt.pc[j - 1] = fr->brkpt.pc[j];
fr->brkpt.pccount[j - 1] = fr->brkpt.pccount[j];
fr->brkpt.prog[j - 1] = fr->brkpt.prog[j];
}
fr->brkpt.count--;
notify_nolisten(player, "Breakpoint deleted.", 1);
return 0;
} else if (!strcasecmp(cmd, "breaks")) {
notify_nolisten(player, "Breakpoints:", 1);
for (i = 0; i < fr->brkpt.count; i++) {
ptr = unparse_breakpoint(fr, i);
notify_nolisten(player, ptr, 1);
}
notify_nolisten(player, "*done*", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
} else if (!strcasecmp(cmd, "where")) {
i = atoi(arg);
muf_backtrace(player, program, i, fr);
add_muf_read_event(descr, player, program, fr);
return 0;
} else if (!strcasecmp(cmd, "stack")) {
notify_nolisten(player, "*Argument stack top*", 1);
i = atoi(arg);
if (!i)
i = STACK_SIZE;
ptr = "";
for (j = fr->argument.top; j > 0 && i-- > 0;) {
cnt = 0;
do {
strcpyn(buf, sizeof(buf), ptr);
ptr = insttotext(NULL, 0, &fr->argument.st[--j], buf2, sizeof(buf2), 4000,
program, 1);
cnt++;
} while (!strcasecmp(ptr, buf) && j > 0);
if (cnt > 1)
notifyf(player, " [repeats %d times]", cnt);
if (strcasecmp(ptr, buf))
notifyf(player, "%3d) %s", j + 1, ptr);
}
notify_nolisten(player, "*done*", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
} else if (!strcasecmp(cmd, "list") || !strcasecmp(cmd, "listi")) {
int startline, endline;
add_muf_read_event(descr, player, program, fr);
if ((ptr2 = (char *) strchr(arg, ','))) {
*ptr2++ = '\0';
} else {
ptr2 = "";
}
if (!*arg) {
if (fr->brkpt.lastlisted) {
startline = fr->brkpt.lastlisted + 1;
} else {
startline = fr->pc->line;
}
endline = startline + 15;
} else {
if (!number(arg)) {
if (!(pinst = funcname_to_pc(program, arg))) {
notify_nolisten(player,
"I don't know a function by that name. (starting arg, 1)",
1);
return 0;
} else {
startline = pinst->line;
endline = startline + 15;
}
} else {
if (*ptr2) {
endline = startline = atoi(arg);
} else {
startline = atoi(arg) - 7;
endline = startline + 15;
}
}
}
if (*ptr2) {
if (!number(ptr2)) {
if (!(pinst = funcname_to_pc(program, ptr2))) {
notify_nolisten(player,
"I don't know a function by that name. (ending arg, 1)",
1);
return 0;
} else {
endline = pinst->line;
}
} else {
endline = atoi(ptr2);
}
}
i = (PROGRAM_CODE(program) + PROGRAM_SIZ(program) - 1)->line;
if (startline > i) {
notify_nolisten(player, "Starting line is beyond end of program.", 1);
return 0;
}
if (startline < 1)
startline = 1;
if (endline > i)
endline = i;
if (endline < startline)
endline = startline;
notify_nolisten(player, "Listing:", 1);
if (!strcasecmp(cmd, "listi")) {
for (i = startline; i <= endline; i++) {
pinst = linenum_to_pc(program, i);
if (pinst) {
notifyf_nolisten(player, "line %d: %s", i, (i == fr->pc->line) ?
show_line_prims(program, fr->pc, STACK_SIZE, 1) :
show_line_prims(program, pinst, STACK_SIZE, 0));
}
}
} else {
list_proglines(player, program, fr, startline, endline);
}
fr->brkpt.lastlisted = endline;
notify_nolisten(player, "*done*", 1);
return 0;
} else if (!strcasecmp(cmd, "quit")) {
notify_nolisten(player, "Halting execution.", 1);
return 1;
} else if (!strcasecmp(cmd, "trace")) {
add_muf_read_event(descr, player, program, fr);
if (!strcasecmp(arg, "on")) {
fr->brkpt.showstack = 1;
notify_nolisten(player, "Trace turned on.", 1);
} else if (!strcasecmp(arg, "off")) {
fr->brkpt.showstack = 0;
notify_nolisten(player, "Trace turned off.", 1);
} else {
notifyf_nolisten(player, "Trace is currently %s.",
fr->brkpt.showstack ? "on" : "off");
}
return 0;
} else if (!strcasecmp(cmd, "words")) {
list_program_functions(player, program, arg);
add_muf_read_event(descr, player, program, fr);
return 0;
} else if (!strcasecmp(cmd, "print")) {
debug_printvar(player, program, fr, arg);
add_muf_read_event(descr, player, program, fr);
return 0;
} else if (!strcasecmp(cmd, "push")) {
push_arg(player, fr, arg);
add_muf_read_event(descr, player, program, fr);
return 0;
} else if (!strcasecmp(cmd, "pop")) {
add_muf_read_event(descr, player, program, fr);
if (fr->argument.top < 1) {
notify_nolisten(player, "Nothing to pop.", 1);
return 0;
}
fr->argument.top--;
CLEAR(fr->argument.st + fr->argument.top);
notify_nolisten(player, "Stack item popped.", 1);
return 0;
} else if (!strcasecmp(cmd, "help")) {
do_helpfile(player, tp_file_man_dir, tp_file_man, "debugger_commands", "");
return 0;
} else {
notify_nolisten(player,
"I don't understand that debugger command. Type 'help' for help.", 1);
add_muf_read_event(descr, player, program, fr);
return 0;
}
return 0;
}
