From: ceriel <none@none>
Date: Thu, 19 Dec 1991 10:19:31 +0000 (+0000)
Subject: Added stab.c
X-Git-Tag: release-5-5~523
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=697dc9b1de77ac75cffeb5b201c8d00dbf570e4f;p=ack.git

Added stab.c
---

diff --git a/lang/cem/cemcom/stab.c b/lang/cem/cemcom/stab.c
new file mode 100644
index 000000000..af1b4b0a9
--- /dev/null
+++ b/lang/cem/cemcom/stab.c
@@ -0,0 +1,306 @@
+/*
+ * (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 */
+
+/* $Header$ */
+
+#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 */
+			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, N_LCSYM, 0, (label) df->df_address, (arith) 0);
+			}
+			else {
+				C_ms_stb_dnam(db_str.base, N_LCSYM, 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 */