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- /*
- * (c) copyright 1990 by the Vrije Universiteit, Amsterdam, The Netherlands.
- * See the copyright notice in the ACK home directory, in the file "Copyright".
- *
- * Author: Ceriel J.H. Jacobs
- */
- /* D E B U G G E R S Y M B O L T A B L E */
- /* $Id$ */
- #include "dbsymtab.h"
- #ifdef DBSYMTAB
- #include <alloc.h>
- #include <em_arith.h>
- #include <em_label.h>
- #include <em_code.h>
- #include <flt_arith.h>
- #include <stb.h>
- #include "LLlex.h"
- #include "stack.h"
- #include "def.h"
- #include "type.h"
- #include "struct.h"
- #include "field.h"
- #include "idf.h"
- #include "Lpars.h"
- #include "level.h"
- extern long full_mask[];
- extern char *sprint();
- #define INCR_SIZE 64
- static struct db_str {
- unsigned sz;
- char *base;
- char *currpos;
- } db_str;
- static
- create_db_str()
- {
- if (! db_str.base) {
- db_str.base = Malloc(INCR_SIZE);
- db_str.sz = INCR_SIZE;
- }
- db_str.currpos = db_str.base;
- }
- static
- addc_db_str(c)
- int c;
- {
- int df = db_str.currpos - db_str.base;
- if (df >= db_str.sz-1) {
- db_str.sz += INCR_SIZE;
- db_str.base = Realloc(db_str.base, db_str.sz);
- db_str.currpos = db_str.base + df;
- }
- *db_str.currpos++ = c;
- *db_str.currpos = '\0';
- }
- static
- adds_db_str(s)
- char *s;
- {
- while (*s) addc_db_str(*s++);
- }
- static
- stb_type(tp)
- register struct type *tp;
- {
- char buf[128];
- static int stb_count;
- long l;
- if (tp->tp_dbindex > 0) {
- adds_db_str(sprint(buf, "%d", tp->tp_dbindex));
- return;
- }
- if (tp->tp_dbindex < 0 && tp->tp_size < 0) {
- adds_db_str(sprint(buf, "%d", -tp->tp_dbindex));
- return;
- }
- if (tp->tp_dbindex <= 0) {
- tp->tp_dbindex = ++stb_count;
- }
- adds_db_str(sprint(buf, "%d=", tp->tp_dbindex));
- switch(tp->tp_fund) {
- /* simple types ... */
- case VOID:
- adds_db_str(sprint(buf, "%d", void_type->tp_dbindex));
- break;
- case INT:
- case LONG:
- case CHAR:
- case SHORT:
- l = full_mask[(int)tp->tp_size];
- if (tp->tp_unsigned) {
- adds_db_str(sprint(buf,
- "r%d;0;%ld",
- tp->tp_dbindex,
- l));
- }
- else {
- l &= ~ (1L << ((int)tp->tp_size * 8 - 1));
- adds_db_str(sprint(buf,
- "r%d;%ld;%ld",
- tp->tp_dbindex,
- -l-1,
- l));
- }
- break;
- case FLOAT:
- case DOUBLE:
- adds_db_str(sprint(buf,
- "r%d;%ld;0",
- tp->tp_dbindex,
- (long)tp->tp_size));
- break;
- /* constructed types ... */
- case POINTER:
- addc_db_str('*');
- stb_type(tp->tp_up);
- break;
- case ARRAY:
- if (tp->tp_size > 0) {
- adds_db_str("ar");
- stb_type(int_type);
- adds_db_str(sprint(buf, ";0;%ld;", tp->tp_size / tp->tp_up->tp_size - 1));
- stb_type(tp->tp_up);
- }
- break;
- case ENUM:
- if (tp->tp_size < 0) {
- adds_db_str(sprint(buf,
- "xe%s:",
- tp->tp_idf->id_text));
- tp->tp_dbindex = -tp->tp_dbindex;
- break;
- }
- addc_db_str('e');
- {
- register struct stack_entry *se = local_level->sl_entry;
- while (se) {
- register struct def *edef = se->se_idf->id_def;
- while (edef) {
- if (edef->df_type == tp &&
- edef->df_sc == ENUM) {
- adds_db_str(sprint(buf,
- "%s:%ld,",
- se->se_idf->id_text,
- edef->df_address));
- }
- edef = edef->next;
- }
- se = se->next;
- }
- }
- addc_db_str(';');
- break;
- case STRUCT:
- case UNION:
- if (tp->tp_size < 0) {
- adds_db_str(sprint(buf,
- "x%c%s:",
- tp->tp_fund == STRUCT ? 's' : 'u',
- tp->tp_idf->id_text));
- tp->tp_dbindex = -tp->tp_dbindex;
- break;
- }
- adds_db_str(sprint(buf,
- "%c%ld",
- tp->tp_fund == STRUCT ? 's' : 'u',
- tp->tp_size));
- {
- register struct sdef *sdef = tp->tp_sdef;
- while (sdef) {
- adds_db_str(sdef->sd_idf->id_text);
- addc_db_str(':');
- if (sdef->sd_type->tp_fund == FIELD) {
- stb_type(sdef->sd_type->tp_up);
- adds_db_str(sprint(buf,
- ",%ld,%ld;",
- sdef->sd_offset*8+sdef->sd_type->tp_field->fd_shift,
- sdef->sd_type->tp_field->fd_width));
- }
- else {
- stb_type(sdef->sd_type);
- adds_db_str(sprint(buf,
- ",%ld,%ld;",
- sdef->sd_offset*8,
- sdef->sd_type->tp_size*8));
- }
- sdef = sdef->sd_sdef;
- }
- }
- addc_db_str(';');
- break;
- case FUNCTION:
- addc_db_str('f');
- stb_type(tp->tp_up);
- }
- }
- stb_tag(tg, str)
- register struct tag *tg;
- char *str;
- {
- create_db_str();
- adds_db_str(str);
- adds_db_str(":T");
- stb_type(tg->tg_type);
- addc_db_str(';');
- C_ms_stb_cst(db_str.base,
- N_LSYM,
- tg->tg_type == void_type || tg->tg_type->tp_size >= 32767
- ? 0
- : (int)tg->tg_type->tp_size,
- (arith) 0);
- }
- stb_typedef(tp, str)
- register struct type *tp;
- char *str;
- {
- create_db_str();
- adds_db_str(str);
- adds_db_str(":t");
- stb_type(tp);
- addc_db_str(';');
- C_ms_stb_cst(db_str.base,
- N_LSYM,
- tp == void_type || tp->tp_size >= 32767
- ? 0
- : (int)tp->tp_size,
- (arith) 0);
- }
- stb_string(df, kind, str)
- register struct def *df;
- char *str;
- {
- register struct type *tp = df->df_type;
- create_db_str();
- adds_db_str(str);
- addc_db_str(':');
- switch(kind) {
- case FUNCTION:
- addc_db_str(df->df_sc == STATIC ? 'f' : 'F');
- stb_type(tp->tp_up);
- addc_db_str(';');
- C_ms_stb_pnam(db_str.base, N_FUN, 1 /* proclevel */, str);
- break;
- default:
- if (df->df_sc == FORMAL ||
- (df->df_sc == REGISTER && df->df_address >= 0)) {
- /* value parameter */
- addc_db_str('p');
- stb_type(tp);
- addc_db_str(';');
- C_ms_stb_cst(db_str.base, N_PSYM, 0, df->df_address);
- }
- else if (df->df_sc != AUTO && df->df_sc != REGISTER) {
- /* global */
- int stabtp = df->df_initialized ? N_STSYM : N_LCSYM;
- if (df->df_sc == STATIC) {
- if (df->df_level >= L_LOCAL) {
- addc_db_str('V');
- }
- else {
- addc_db_str('S');
- }
- }
- else {
- addc_db_str('G');
- }
- stb_type(tp);
- addc_db_str(';');
- if (df->df_sc == STATIC && df->df_level >= L_LOCAL) {
- C_ms_stb_dlb(db_str.base, stabtp, 0, (label) df->df_address, (arith) 0);
- }
- else {
- C_ms_stb_dnam(db_str.base, stabtp, 0, str, (arith) 0);
- }
- }
- else { /* local variable */
- stb_type(tp); /* assign type num to avoid
- difficult to parse string */
- addc_db_str(';');
- C_ms_stb_cst(db_str.base, N_LSYM, 0, df->df_address);
- }
- break;
- }
- }
- #endif /* DBSYMTAB */
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