393 lines
8.5 KiB
C
393 lines
8.5 KiB
C
/*
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* (c) copyright 1990 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*
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* Author: Ceriel J.H. Jacobs
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*/
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/* D E B U G G E R S Y M B O L T A B L E */
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/* $Header$ */
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#include <alloc.h>
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#include <em_arith.h>
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#include <em_label.h>
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#include <em_code.h>
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#include <flt_arith.h>
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#include <stb.h>
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#include "LLlex.h"
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#include "def.h"
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#include "type.h"
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#include "idf.h"
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#include "const.h"
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#include "scope.h"
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#include "main.h"
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#define INCR_SIZE 64
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extern int proclevel;
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static struct db_str {
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unsigned sz;
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char *base;
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char *currpos;
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} db_str;
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static
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create_db_str()
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{
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if (! db_str.base) {
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db_str.base = Malloc(INCR_SIZE);
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db_str.sz = INCR_SIZE;
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}
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db_str.currpos = db_str.base;
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}
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static
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addc_db_str(c)
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int c;
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{
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int df = db_str.currpos - db_str.base;
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if (df >= db_str.sz-1) {
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db_str.sz += INCR_SIZE;
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db_str.base = Realloc(db_str.base, db_str.sz);
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db_str.currpos = db_str.base + df;
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}
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*db_str.currpos++ = c;
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*db_str.currpos = '\0';
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}
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static
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adds_db_str(s)
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char *s;
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{
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while (*s) addc_db_str(*s++);
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}
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static
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stb_type(tp, assign_num)
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register t_type *tp;
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{
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char buf[128];
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static int stb_count;
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if (tp->tp_dbindex > 0) {
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adds_db_str(sprint(buf, "%d", tp->tp_dbindex));
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return;
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}
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if (tp->tp_dbindex < 0) {
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if (tp->tp_next == 0) {
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adds_db_str(sprint(buf, "%d", -tp->tp_dbindex));
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return;
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}
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tp->tp_dbindex = -tp->tp_dbindex;
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}
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if (tp->tp_dbindex == 0 && assign_num) {
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tp->tp_dbindex = ++stb_count;
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}
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if (tp->tp_dbindex > 0) {
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adds_db_str(sprint(buf, "%d=", tp->tp_dbindex));
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}
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if (tp == void_type) {
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adds_db_str(sprint(buf, "%d", tp->tp_dbindex));
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return;
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}
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switch(tp->tp_fund) {
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/* simple types ... */
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case T_INTEGER:
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adds_db_str(sprint(buf,
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"r%d;%ld;%ld",
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tp->tp_dbindex,
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(long) min_int[(int)tp->tp_size],
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(long) max_int[(int)tp->tp_size]));
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break;
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case T_CARDINAL:
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adds_db_str(sprint(buf,
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"r%d;0;-1",
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tp->tp_dbindex));
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break;
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case T_REAL:
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adds_db_str(sprint(buf,
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"r%d;%ld;0",
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tp->tp_dbindex,
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(long)tp->tp_size));
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break;
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case T_CHAR:
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adds_db_str(sprint(buf,
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"r%d;0;255",
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tp->tp_dbindex));
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break;
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case T_WORD:
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if (tp->tp_size == word_size) {
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adds_db_str(sprint(buf,
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"r%d;0;-1",
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tp->tp_dbindex));
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}
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else {
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adds_db_str(sprint(buf,
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"r%d;0;255",
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tp->tp_dbindex));
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}
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break;
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/* constructed types ... */
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case T_SUBRANGE:
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adds_db_str(sprint(buf,
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"r%d;%ld;%ld",
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tp->tp_next->tp_dbindex,
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(long) tp->sub_lb,
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(long) tp->sub_ub));
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break;
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case T_EQUAL:
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stb_type(tp->tp_next, 0);
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if (tp->tp_dbindex < 0) tp->tp_dbindex = -tp->tp_dbindex;
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break;
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case T_HIDDEN:
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if (DefinitionModule && CurrVis == Defined->mod_vis) {
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tp->tp_dbindex = - ++stb_count;
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adds_db_str(sprint(buf, "%d", -tp->tp_dbindex));
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}
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else {
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/* ??? what to do here??? */
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addc_db_str('*');
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stb_type(void_type, 0);
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/* ??? this certainly is not correct */
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}
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break;
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case T_POINTER:
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if (tp->tp_next) {
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addc_db_str('*');
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stb_type(tp->tp_next, 0);
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if (tp->tp_dbindex < 0) tp->tp_dbindex = -tp->tp_dbindex;
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}
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else {
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tp->tp_dbindex = - ++stb_count;
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adds_db_str(sprint(buf, "%d", -tp->tp_dbindex));
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}
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break;
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case T_SET:
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addc_db_str('S');
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stb_type(tp->tp_next, 0);
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adds_db_str(sprint(buf, ";%ld;%ld;", tp->tp_size, tp->set_low));
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break;
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case T_ARRAY:
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addc_db_str('a');
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if (IsConformantArray(tp)) {
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addc_db_str('r');
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stb_type(tp->tp_next, 0);
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adds_db_str(sprint(buf, ";0;A%ld", tp->arr_high));
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}
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else {
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stb_type(tp->tp_next, 0);
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}
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addc_db_str(';');
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stb_type(tp->arr_elem, 0);
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break;
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case T_ENUMERATION:
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addc_db_str('e');
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{
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register struct def *edef = tp->enm_enums;
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while (edef) {
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adds_db_str(sprint(buf, "%s:%ld,",
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edef->df_idf->id_text,
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edef->enm_val));
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edef = edef->enm_next;
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}
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}
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addc_db_str(';');
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break;
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case T_RECORD:
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adds_db_str(sprint(buf, "s%ld", tp->tp_size));
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{
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register struct def *sdef = tp->rec_scope->sc_def;
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while (sdef) {
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adds_db_str(sdef->df_idf->id_text);
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addc_db_str(':');
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stb_type(sdef->df_type, 0);
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adds_db_str(sprint(buf,
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",%ld,%ld;",
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sdef->fld_off*8,
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sdef->df_type->tp_size*8));
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sdef = sdef->df_nextinscope;
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}
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}
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addc_db_str(';');
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break;
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case T_PROCEDURE:
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addc_db_str('Q');
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stb_type(tp->tp_next ? tp->tp_next : void_type, 0);
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{
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register struct paramlist *p = tp->prc_params;
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int paramcount = 0;
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while (p) {
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paramcount++;
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p = p->par_next;
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}
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adds_db_str(sprint(buf, ",%d;", paramcount));
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p = tp->prc_params;
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while (p) {
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addc_db_str(IsVarParam(p)
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? 'v'
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: IsConformantArray(TypeOfParam(p))
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? 'i'
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: 'p');
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stb_type(TypeOfParam(p), 0);
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addc_db_str(';');
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p = p->par_next;
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}
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}
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}
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}
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stb_string(df, kind)
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register t_def *df;
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{
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register t_type *tp = df->df_type;
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char buf[64];
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create_db_str();
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adds_db_str(df->df_idf->id_text);
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addc_db_str(':');
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switch(kind) {
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case D_MODULE:
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adds_db_str(sprint(buf, "M%d;", df->mod_vis->sc_count));
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C_ms_stb_pnam(db_str.base, N_FUN, proclevel, df->mod_vis->sc_scope->sc_name);
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break;
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case D_PROCEDURE:
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adds_db_str(sprint(buf, "Q%d;", df->prc_vis->sc_count));
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stb_type(tp->tp_next ? tp->tp_next : void_type, 0);
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addc_db_str(';');
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C_ms_stb_pnam(db_str.base, N_FUN, proclevel, df->prc_vis->sc_scope->sc_name);
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{
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register struct paramlist *p = tp->prc_params;
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while (p) {
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stb_string(p->par_def, D_VARIABLE);
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p = p->par_next;
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}
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}
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break;
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case D_END:
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adds_db_str(sprint(buf, "E%d;", df->mod_vis->sc_count));
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C_ms_stb_cst(db_str.base, N_SCOPE, proclevel, 0);
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break;
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case D_PEND:
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adds_db_str(sprint(buf, "E%d;", df->prc_vis->sc_count));
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C_ms_stb_cst(db_str.base, N_SCOPE, proclevel, 0);
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break;
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case D_VARIABLE:
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if (DefinitionModule && CurrVis != Defined->mod_vis) break;
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if (df->df_flags & D_VARPAR) { /* VAR parameter */
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addc_db_str('v');
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stb_type(tp, 0);
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addc_db_str(';');
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C_ms_stb_cst(db_str.base, N_PSYM, 0, df->var_off);
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}
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else if (df->df_flags & D_VALPAR) { /* value parameter */
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addc_db_str(IsConformantArray(tp)
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? 'i'
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: 'p');
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stb_type(tp, 0);
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addc_db_str(';');
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C_ms_stb_cst(db_str.base, N_PSYM, 0, df->var_off);
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}
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else if (!proclevel ||
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(df->df_flags & D_ADDRGIVEN)) { /* global */
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addc_db_str('G');
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stb_type(tp, 0);
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addc_db_str(';');
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if (df->df_flags & D_ADDRGIVEN) {
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C_ms_stb_cst(db_str.base, N_LCSYM, 0, df->var_off);
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}
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else {
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C_ms_stb_dnam(db_str.base, N_LCSYM, 0, df->var_name, (arith) 0);
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}
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}
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else { /* local variable */
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stb_type(tp, 1); /* assign type num to avoid
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difficult to parse string */
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addc_db_str(';');
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C_ms_stb_cst(db_str.base, N_LSYM, 0, df->var_off);
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}
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break;
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case D_TYPE:
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addc_db_str('t');
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stb_type(tp, 1);
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addc_db_str(';');
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C_ms_stb_cst(db_str.base,
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N_LSYM,
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tp == void_type || tp->tp_size >= max_int[2]
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? 0
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: (int)tp->tp_size,
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(arith) 0);
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break;
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case D_CONST:
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if (DefinitionModule && CurrVis != Defined->mod_vis) break;
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addc_db_str('c');
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addc_db_str('=');
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tp = BaseType(tp);
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switch(tp->tp_fund) {
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case T_INTEGER:
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case T_INTORCARD:
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case T_CARDINAL:
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case T_WORD:
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case T_POINTER:
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case T_PROCEDURE:
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adds_db_str(sprint(buf, "i%ld;", df->con_const.TOK_INT));
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break;
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case T_CHAR:
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adds_db_str(sprint(buf, "c%ld;", df->con_const.TOK_INT));
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break;
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case T_REAL:
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addc_db_str('r');
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if (! df->con_const.TOK_REAL) {
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char buf2[FLT_STRLEN];
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flt_flt2str(&df->con_const.TOK_RVAL, buf2, FLT_STRLEN);
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adds_db_str(buf2);
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}
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else adds_db_str(df->con_const.TOK_REAL);
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addc_db_str(';');
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break;
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case T_STRING: {
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register char *p = df->con_const.TOK_STR;
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adds_db_str("s'");
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while (*p) {
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if (*p == '\'' || *p == '\\') {
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addc_db_str('\\');
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}
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addc_db_str(*p++);
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}
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adds_db_str("';");
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}
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break;
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case T_ENUMERATION:
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addc_db_str('e');
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stb_type(tp, 0);
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adds_db_str(sprint(buf, ",%ld;", df->enm_val));
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break;
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case T_SET: {
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register int i;
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addc_db_str('S');
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stb_type(tp, 0);
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for (i = 0; i < tp->tp_size; i++) {
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adds_db_str(sprint(buf, ",%ld",
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(df->con_const.tk_data.tk_set[i/(int) word_size] >> (8*(i%(int)word_size)))&0377));
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}
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addc_db_str(';');
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}
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break;
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}
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C_ms_stb_cst(db_str.base,
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N_LSYM,
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tp->tp_size < max_int[2] ? (int)tp->tp_size : 0,
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(arith) 0);
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break;
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}
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}
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