600 lines
10 KiB
C
600 lines
10 KiB
C
/* $Header$ */
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#include <stdio.h>
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#include <varargs.h>
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#include <assert.h>
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#include <alloc.h>
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#include <out.h>
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#include "operator.h"
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#include "position.h"
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#include "file.h"
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#include "idf.h"
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#include "tree.h"
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#include "message.h"
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#include "scope.h"
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#include "symbol.h"
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#include "langdep.h"
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#include "type.h"
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extern FILE *db_out;
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extern t_lineno currline;
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extern long pointer_size;
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extern char *strrindex();
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p_tree run_command;
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/*VARARGS1*/
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p_tree
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mknode(va_alist)
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va_dcl
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{
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va_list ap;
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register p_tree p = new_tree();
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va_start(ap);
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{
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register int i, na;
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p->t_oper = va_arg(ap, int);
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switch(p->t_oper) {
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case OP_NAME:
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p->t_idf = va_arg(ap, struct idf *);
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p->t_str = va_arg(ap, char *);
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break;
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case OP_INTEGER:
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p->t_ival = va_arg(ap, long);
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break;
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case OP_STRING:
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p->t_sval = va_arg(ap, char *);
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break;
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case OP_REAL:
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p->t_fval = va_arg(ap, double);
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break;
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case OP_AT:
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p->t_lino = va_arg(ap, long);
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p->t_filename = va_arg(ap, char *);
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break;
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case OP_NEXT:
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case OP_STEP:
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case OP_REGS:
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case OP_DELETE:
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case OP_RESTORE:
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p->t_ival = va_arg(ap, long);
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break;
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default:
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na = nargs(p->t_oper);
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assert(na <= MAXARGS);
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for (i = 0; i < na; i++) {
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p->t_args[i] = va_arg(ap, p_tree);
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}
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break;
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}
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}
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va_end(ap);
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return p;
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}
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freenode(p)
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register p_tree p;
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{
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register int na, i;
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if (! p) return;
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na = nargs(p->t_oper);
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assert(na <= MAXARGS);
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for (i = 0; i < na; i++) {
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freenode(p->t_args[i]);
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}
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free_tree(p);
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}
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print_node(p, top_level)
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register p_tree p;
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{
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if (!p) return;
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switch(p->t_oper) {
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case OP_LIST:
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fputs("list ", db_out);
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if (p->t_args[0]) {
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print_node(p->t_args[0], 0);
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if (p->t_args[1]) {
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fputs(", ", db_out);
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print_node(p->t_args[1], 0);
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}
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}
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break;
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case OP_PRINT:
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fputs("print ", db_out);
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print_node(p->t_args[0], 0);
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break;
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case OP_FILE:
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fputs("file ", db_out);
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print_node(p->t_args[0], 0);
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break;
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case OP_DELETE:
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fprintf(db_out, "delete %d", p->t_ival);
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break;
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case OP_REGS:
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fprintf(db_out, "regs %d", p->t_ival);
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break;
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case OP_NEXT:
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fprintf(db_out, "next %d", p->t_ival);
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break;
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case OP_STEP:
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fprintf(db_out, "step %d", p->t_ival);
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break;
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case OP_STATUS:
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fputs("status", db_out);
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break;
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case OP_DUMP:
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fputs("dump ", db_out);
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print_position(p->t_address, 1);
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break;
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case OP_RESTORE:
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fprintf(db_out, "restore %d", p->t_ival);
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break;
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case OP_WHERE:
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fputs("where", db_out);
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break;
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case OP_CONT:
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fputs("cont", db_out);
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if (p->t_args[0]) {
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fprintf(db_out, " %d", p->t_args[0]->t_ival);
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}
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if (p->t_args[1]) {
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fputs(" ", db_out);
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print_node(p->t_args[1], 0);
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}
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break;
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case OP_WHEN:
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fputs("when ", db_out);
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if (p->t_address != NO_ADDR) {
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print_position(p->t_address, 1);
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}
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else print_node(p->t_args[0], 0);
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if (p->t_args[1]) {
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fputs(" if ", db_out);
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print_node(p->t_args[1], 0);
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}
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p = p->t_args[2];
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fputs(" { ", db_out);
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while (p->t_oper == OP_LINK) {
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print_node(p->t_args[0], 0);
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fputs("; ", db_out);
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p = p->t_args[1];
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}
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print_node(p, 0);
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fputs(" }", db_out);
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break;
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case OP_STOP:
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fputs("stop ", db_out);
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if (p->t_address != NO_ADDR) {
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print_position(p->t_address, 1);
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}
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else print_node(p->t_args[0], 0);
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if (p->t_args[1]) {
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fputs(" if ", db_out);
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print_node(p->t_args[1], 0);
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}
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break;
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case OP_TRACE:
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fputs("trace ", db_out);
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if (p->t_args[2]) {
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fputs("on ", db_out);
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print_node(p->t_args[2], 0);
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fputs(" ", db_out);
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}
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if (p->t_address != NO_ADDR) {
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print_position(p->t_address, 1);
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}
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else print_node(p->t_args[0], 0);
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if (p->t_args[1]) {
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fputs(" if ", db_out);
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print_node(p->t_args[1], 0);
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}
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break;
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case OP_AT:
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fprintf(db_out, "at \"%s\":%ld", p->t_filename, p->t_lino);
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break;
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case OP_IN:
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fputs("in ", db_out);
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print_node(p->t_args[0], 0);
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break;
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case OP_SELECT:
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print_node(p->t_args[0], 0);
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fputs("`", db_out);
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print_node(p->t_args[1], 0);
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break;
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case OP_NAME:
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fputs(p->t_str, db_out);
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break;
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case OP_INTEGER:
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fprintf(db_out, currlang->decint_fmt, p->t_ival);
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break;
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case OP_STRING:
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(*currlang->printstring)(p->t_sval, strlen(p->t_sval));
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break;
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case OP_REAL:
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fprintf(db_out, currlang->real_fmt, p->t_fval);
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break;
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case OP_UNOP:
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case OP_BINOP:
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(*currlang->printop)(p);
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break;
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}
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if (top_level) fputs("\n", db_out);
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}
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int
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repeatable(com)
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p_tree com;
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{
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switch(com->t_oper) {
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case OP_CONT:
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case OP_NEXT:
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case OP_STEP:
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case OP_LIST:
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case OP_STATUS:
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case OP_PRINT:
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return 1;
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}
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return 0;
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}
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int
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in_status(com)
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p_tree com;
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{
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switch(com->t_oper) {
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case OP_STOP:
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case OP_WHEN:
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case OP_TRACE:
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case OP_DUMP:
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return 1;
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}
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return 0;
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}
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eval(p)
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p_tree p;
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{
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if (p) (*operators[p->t_oper].op_fun)(p);
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}
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do_list(p)
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p_tree p;
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{
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if (currfile) {
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lines(currfile->sy_file,
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p->t_args[0] ? (int) p->t_args[0]->t_ival : (int) currline-4,
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p->t_args[1] ? (int) p->t_args[1]->t_ival : (int) currline+5);
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currline = p->t_args[1] ? p->t_args[1]->t_ival + 1 : currline + 10;
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}
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else fprintf(db_out, "no current file\n");
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}
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do_file(p)
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p_tree p;
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{
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if (p->t_args[0]) {
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newfile(p->t_args[0]->t_idf);
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}
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else if (currfile) fprintf(db_out, "%s\n", currfile->sy_idf->id_text);
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else fprintf(db_out, "no current file\n");
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}
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newfile(id)
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register struct idf *id;
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{
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register p_symbol sym = Lookup(id, PervasiveScope, FILESYM);
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if (currfile != sym) currline = 1;
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currfile = sym;
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if (! currfile) {
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currline = 1;
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currfile = add_file(id->id_text);
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currfile->sy_file->f_scope = FileScope;
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}
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find_language(strrindex(id->id_text, '.'));
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}
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static t_addr
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get_pos(p)
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p_tree p;
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{
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t_addr a = ILL_ADDR;
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register p_symbol sym;
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if (! p) return NO_ADDR;
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if (p->t_address != 0) return p->t_address;
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switch(p->t_oper) {
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case OP_AT:
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if (! p->t_filename &&
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(! currfile || ! (p->t_filename = currfile->sy_idf->id_text))) {
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error("no current file");
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break;
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}
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a = get_addr_from_position(&(p->t_pos));
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if (a == ILL_ADDR) {
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error("could not determine address of \"%s\":%d",
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p->t_filename, p->t_lino);
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break;
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}
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p->t_address = a;
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break;
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case OP_IN:
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a = get_pos(p->t_args[0]);
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p->t_address = a;
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break;
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case OP_NAME:
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case OP_SELECT:
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sym = identify(p, PROC|MODULE);
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if (! sym) {
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break;
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}
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if (! sym->sy_name.nm_scope || ! sym->sy_name.nm_scope->sc_bp_opp) {
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error("could not determine address of \"%s\"", p->t_str);
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break;
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}
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a = sym->sy_name.nm_scope->sc_bp_opp;
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break;
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default:
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assert(0);
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}
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return a;
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}
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do_stop(p)
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p_tree p;
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{
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t_addr a = get_pos(p->t_args[0]);
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if (a == ILL_ADDR) {
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return;
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}
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p->t_address = a;
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add_to_item_list(p);
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if (a != NO_ADDR) {
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if (! set_or_clear_breakpoint(a, SETBP)) {
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error("could not set breakpoint");
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}
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}
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}
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do_trace(p)
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p_tree p;
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{
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t_addr a;
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t_addr e;
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p->t_address = NO_ADDR;
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if (p->t_args[0]) {
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a = get_pos(p->t_args[0]);
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if (a == ILL_ADDR) return;
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if (p->t_args[0]->t_oper == OP_AT) {
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e = a;
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p->t_address = a;
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}
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else {
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p_scope sc = get_next_scope_from_addr(a+1);
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if (sc) e = sc->sc_start - 1;
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else e = 0xffffffff;
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}
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if (! set_or_clear_trace(a, e, SETTRACE)) {
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error("could not set trace");
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}
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}
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add_to_item_list(p);
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}
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do_continue(p)
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p_tree p;
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{
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int count;
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if (p) {
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count = p->t_args[0]->t_ival;
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if (p->t_args[1]) {
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t_addr a = get_addr_from_position(&(p->t_args[1]->t_pos));
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p_scope sc = get_scope_from_addr(a);
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if (a == ILL_ADDR || base_scope(sc) != base_scope(CurrentScope) ||
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! set_pc(a)) {
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error("cannot continue at line %d",
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p->t_args[1]->t_lino);
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return;
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}
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}
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}
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else count = 1;
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while (count--) {
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if (! send_cont(count==0)) {
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error("no debuggee");
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break;
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}
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}
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}
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do_step(p)
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p_tree p;
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{
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if (! do_single_step(SETSS, p->t_ival)) {
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error("no debuggee");
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}
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}
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do_next(p)
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p_tree p;
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{
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if (! do_single_step(SETSSF, p->t_ival)) {
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error("no debuggee");
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}
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}
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extern t_addr *get_EM_regs();
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do_regs(p)
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p_tree p;
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{
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t_addr *buf;
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int n = p->t_ival;
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if (! (buf = get_EM_regs(n))) {
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error("no debuggee");
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return;
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}
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fprintf(db_out, "EM registers %d levels back:\n", n);
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fprintf(db_out, "\tLocalBase =\t0x%lx\n\tArgumentBase =\t0x%lx\n",
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(long) buf[LB_OFF], (long) buf[AB_OFF]);
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fprintf(db_out, "\tProgramCounter=\t0x%lx\n\tHeapPointer = \t0x%lx\n",
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(long) buf[PC_OFF],
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(long) buf[HP_OFF]);
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fprintf(db_out, "\tStackPointer =\t0x%lx\n", (long) buf[SP_OFF]);
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}
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/*ARGSUSED*/
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do_where(p)
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p_tree p;
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{
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int i = 0;
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for (;;) {
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t_addr AB;
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t_addr PC;
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p_scope sc;
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t_addr *buf;
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if (! (buf = get_EM_regs(i++))) {
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error("no debuggee");
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return;
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}
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AB = buf[AB_OFF];
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PC = buf[PC_OFF];
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if (! AB) break;
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sc = base_scope(get_scope_from_addr(PC));
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if (! sc || sc->sc_start > PC) break;
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fprintf(db_out, "%s(", sc->sc_definedby->sy_idf->id_text);
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print_params(sc->sc_definedby->sy_type, AB, has_static_link(sc));
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fputs(") ", db_out);
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print_position(PC, 0);
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fputs("\n", db_out);
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}
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}
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/*ARGSUSED*/
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do_status(p)
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p_tree p;
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{
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print_items();
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}
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extern p_tree remove_from_item_list();
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do_delete(p)
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p_tree p;
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{
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p = remove_from_item_list((int) p->t_ival);
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if (p) switch(p->t_oper) {
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case OP_WHEN:
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case OP_STOP: {
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t_addr a = get_pos(p->t_args[0]);
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if (a != ILL_ADDR && a != NO_ADDR) {
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set_or_clear_breakpoint(a, CLRBP);
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}
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break;
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}
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case OP_TRACE: {
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t_addr a = get_pos(p->t_args[0]);
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if (a != ILL_ADDR && a != NO_ADDR) {
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t_addr e;
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if (p->t_args[0]->t_oper == OP_AT) {
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e = a;
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}
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else {
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p_scope sc = get_next_scope_from_addr(a+1);
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if (sc) e = sc->sc_start - 1;
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else e = 0xffffffff;
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}
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set_or_clear_trace(a, e, CLRTRACE);
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}
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break;
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}
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case OP_DUMP:
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free_dump(p);
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}
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freenode(p);
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}
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do_print(p)
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p_tree p;
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{
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char *buf;
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long size;
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p_type tp;
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switch(p->t_oper) {
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case OP_PRINT:
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do_print(p->t_args[0]);
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break;
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case OP_LINK:
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do_print(p->t_args[0]);
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do_print(p->t_args[1]);
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break;
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default:
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if (! eval_expr(p, &buf, &size, &tp)) return;
|
|
print_node(p, 0);
|
|
fputs(" = ", db_out);
|
|
print_val(tp, size, buf, 0, 0);
|
|
if (buf) free(buf);
|
|
fputs("\n", db_out);
|
|
break;
|
|
}
|
|
}
|
|
|
|
perform(p, a)
|
|
register p_tree p;
|
|
t_addr a;
|
|
{
|
|
switch(p->t_oper) {
|
|
case OP_WHEN:
|
|
p = p->t_args[2];
|
|
while (p->t_oper == OP_LINK) {
|
|
eval(p->t_args[0]);
|
|
p = p->t_args[1];
|
|
}
|
|
eval(p);
|
|
break;
|
|
case OP_TRACE:
|
|
if (p->t_args[0] && p->t_args[0]->t_oper == OP_IN) {
|
|
register p_scope sc = base_scope(CurrentScope);
|
|
|
|
if (sc != get_scope_from_addr(p->t_args[0]->t_address)) {
|
|
break;
|
|
}
|
|
}
|
|
{
|
|
p_position pos = get_position_from_addr(a);
|
|
|
|
newfile(str2idf(pos->filename, 1));
|
|
currline = pos->lineno;
|
|
lines(currfile->sy_file, (int)currline, (int)currline);
|
|
if (p->t_args[2]) do_print(p->t_args[2]);
|
|
}
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
}
|