--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/cmd/abi/spectrans/spec2trace/linkage.c	Tue Jun 02 18:56:50 2009 +0900
@@ -0,0 +1,121 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 1997-1999 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma ident	"@(#)linkage.c	1.3	05/06/08 SMI"
+
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include "parser.h"
+#include "trace.h"
+#include "util.h"
+#include "db.h"
+#include "symtab.h"
+#include "io.h"
+#include "printfuncs.h"
+#include "errlog.h"
+#include "parseproto.h"
+
+static void generate_interface_predeclaration(char *, ENTRY *);
+static void generate_linkage_function(char *, char *);
+
+
+/*
+ * generate_linkage -- make code for the linkage part of an individual
+ *	interface. Assumes Bodyfp.
+ */
+void
+generate_linkage(ENTRY *function)
+{
+	char	*library_name = db_get_current_library(),
+		*function_name;
+	char	composite_name[MAXLINE];
+
+	errlog(BEGIN, "generate_linkage() {");
+
+	function_name = name_of(function);
+	(void) snprintf(composite_name, sizeof (composite_name),
+		"%s_%s", library_name, function_name);
+
+	/* Print the predeclaration of the interceptor. */
+	generate_interface_predeclaration(composite_name, function);
+	/* Collect things we'll use more than once. */
+
+	/* Next the struct used to pass parameters. */
+	(void) fprintf(Bodyfp, "static abisym_t __abi_%s_%s_sym;\n",
+		library_name, function_name);
+
+	/* The linkage function, */
+	generate_linkage_function(library_name, function_name);
+
+	(void) fputs("\n\n", Bodyfp);
+	errlog(END, "}");
+}
+
+
+/*
+ *  generate_interface_predeclaration -- make things know so the compiler
+ *	won't kak.
+ */
+static void
+generate_interface_predeclaration(char *composite_name, ENTRY *function)
+{
+	decl_t *pp;
+	char *p = symtab_get_prototype();
+	char buf[BUFSIZ];
+
+	(void) fprintf(Bodyfp, "\n/* from \"%s\", line %d */\n",
+		symtab_get_filename(), line_of(function));
+	(void) fprintf(Bodyfp, "static ");
+
+	if (p[strlen(p)-1] != ';')
+		(void) snprintf(buf, BUFSIZ, "%s;", strnormalize(p));
+	else
+		(void) snprintf(buf, BUFSIZ, "%s", strnormalize(p));
+
+	decl_Parse(buf, &pp);
+	decl_AddArgNames(pp);
+	symtab_set_prototype(decl_ToString(buf, DTS_DECL, pp, composite_name));
+	(void) fprintf(Bodyfp, "%s;\n", symtab_get_prototype());
+	decl_Destroy(pp);
+}
+
+
+
+/*
+ * generate_linkage_function --  The linkage function itself.
+ */
+static void
+generate_linkage_function(char *lib, char *func)
+{
+	(void) fprintf(Bodyfp,
+	    "void *__abi_%s_%s(void *real, int vflag) { \n", lib, func);
+	(void) fprintf(Bodyfp, "    ABI_REAL(%s, %s) = real;\n", lib, func);
+	(void) fprintf(Bodyfp, "    ABI_VFLAG(%s, %s) = vflag;\n", lib, func);
+	(void) fprintf(Bodyfp,
+	    "    return ((void *) %s_%s);\n}\n", lib, func);
+}