309 lines
6 KiB
C
309 lines
6 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 "dbsymtab.h"
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#ifdef DBSYMTAB
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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 "stack.h"
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#include "def.h"
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#include "type.h"
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#include "struct.h"
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#include "field.h"
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#include "idf.h"
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#include "Lpars.h"
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#include "level.h"
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extern long full_mask[];
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extern char *sprint();
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#define INCR_SIZE 64
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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)
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register struct 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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long l;
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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 && tp->tp_size < 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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tp->tp_dbindex = ++stb_count;
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}
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adds_db_str(sprint(buf, "%d=", tp->tp_dbindex));
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switch(tp->tp_fund) {
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/* simple types ... */
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case VOID:
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adds_db_str(sprint(buf, "%d", void_type->tp_dbindex));
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break;
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case INT:
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case LONG:
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case CHAR:
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case SHORT:
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l = full_mask[(int)tp->tp_size];
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if (tp->tp_unsigned) {
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adds_db_str(sprint(buf,
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"r%d;0;%ld",
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tp->tp_dbindex,
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l));
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}
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else {
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l &= ~ (1L << ((int)tp->tp_size * 8 - 1));
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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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-l-1,
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l));
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}
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break;
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case FLOAT:
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case DOUBLE:
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case LNGDBL:
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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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/* constructed types ... */
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case POINTER:
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addc_db_str('*');
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stb_type(tp->tp_up);
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break;
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case ARRAY:
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if (tp->tp_size > 0) {
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adds_db_str("ar");
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stb_type(int_type);
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adds_db_str(sprint(buf, ";0;%ld;", tp->tp_size / tp->tp_up->tp_size - 1));
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stb_type(tp->tp_up);
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}
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break;
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case ENUM:
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if (tp->tp_size < 0) {
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adds_db_str(sprint(buf,
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"xe%s:",
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tp->tp_idf->id_text));
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tp->tp_dbindex = -tp->tp_dbindex;
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break;
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}
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addc_db_str('e');
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{
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register struct stack_entry *se = local_level->sl_entry;
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while (se) {
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register struct def *edef = se->se_idf->id_def;
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while (edef) {
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if (edef->df_type == tp &&
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edef->df_sc == ENUM) {
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adds_db_str(sprint(buf,
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"%s:%ld,",
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se->se_idf->id_text,
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edef->df_address));
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}
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edef = edef->next;
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}
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se = se->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 STRUCT:
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case UNION:
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if (tp->tp_size < 0) {
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adds_db_str(sprint(buf,
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"x%c%s:",
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tp->tp_fund == STRUCT ? 's' : 'u',
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tp->tp_idf->id_text));
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tp->tp_dbindex = -tp->tp_dbindex;
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break;
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}
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adds_db_str(sprint(buf,
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"%c%ld",
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tp->tp_fund == STRUCT ? 's' : 'u',
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tp->tp_size));
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{
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register struct sdef *sdef = tp->tp_sdef;
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while (sdef) {
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adds_db_str(sdef->sd_idf->id_text);
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addc_db_str(':');
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if (sdef->sd_type->tp_fund == FIELD) {
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stb_type(sdef->sd_type->tp_up);
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adds_db_str(sprint(buf,
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",%ld,%ld;",
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sdef->sd_offset*8+sdef->sd_type->tp_field->fd_shift,
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sdef->sd_type->tp_field->fd_width));
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}
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else {
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stb_type(sdef->sd_type);
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adds_db_str(sprint(buf,
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",%ld,%ld;",
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sdef->sd_offset*8,
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sdef->sd_type->tp_size*8));
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}
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sdef = sdef->sd_sdef;
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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 FUNCTION:
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addc_db_str('f');
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stb_type(tp->tp_up);
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}
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}
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stb_tag(tg, str)
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register struct tag *tg;
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char *str;
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{
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create_db_str();
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adds_db_str(str);
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adds_db_str(":T");
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stb_type(tg->tg_type);
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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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tg->tg_type == void_type || tg->tg_type->tp_size >= 32767
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? 0
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: (int)tg->tg_type->tp_size,
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(arith) 0);
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}
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stb_typedef(tp, str)
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register struct type *tp;
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char *str;
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{
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create_db_str();
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adds_db_str(str);
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adds_db_str(":t");
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stb_type(tp);
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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 >= 32767
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? 0
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: (int)tp->tp_size,
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(arith) 0);
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}
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stb_string(df, kind, str)
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register struct def *df;
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char *str;
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{
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register struct type *tp = df->df_type;
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create_db_str();
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adds_db_str(str);
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addc_db_str(':');
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switch(kind) {
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case FUNCTION:
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addc_db_str(df->df_sc == STATIC ? 'f' : 'F');
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stb_type(tp->tp_up);
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addc_db_str(';');
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C_ms_stb_pnam(db_str.base, N_FUN, 1 /* proclevel */, str);
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break;
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default:
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if (df->df_sc == FORMAL ||
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(df->df_sc == REGISTER && df->df_address >= 0)) {
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/* value parameter */
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addc_db_str('p');
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stb_type(tp);
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addc_db_str(';');
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C_ms_stb_cst(db_str.base, N_PSYM, 0, df->df_address);
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}
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else if (df->df_sc != AUTO && df->df_sc != REGISTER) {
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/* global */
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int stabtp = df->df_initialized ? N_STSYM : N_LCSYM;
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if (df->df_sc == STATIC) {
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if (df->df_level >= L_LOCAL) {
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addc_db_str('V');
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}
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else {
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addc_db_str('S');
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}
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}
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else {
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addc_db_str('G');
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}
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stb_type(tp);
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addc_db_str(';');
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if (df->df_sc == STATIC && df->df_level >= L_LOCAL) {
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C_ms_stb_dlb(db_str.base, stabtp, 0, (label) df->df_address, (arith) 0);
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}
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else {
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C_ms_stb_dnam(db_str.base, stabtp, 0, str, (arith) 0);
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}
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}
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else { /* local variable */
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stb_type(tp); /* 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->df_address);
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}
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break;
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}
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}
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#endif /* DBSYMTAB */
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