printfuncs.c revision 753d2d2e8e7fd0c9bcf736d9bf2f2faf4d6234cc
/*
* 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 "%Z%%M% %I% %E% SMI"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.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"
static int prepare_printf_part(ENTRY *, char *, char *, int);
static char *space_to_uscore(char const *);
static char arglist[_POSIX_ARG_MAX];
/*
* generate_printf -- make the cleanest possible printf for the
* parameters, in a relatively terse apptrace/dbx-like format,
* ending in ") = ", or ) if its a void function we're doing.
*/
void
generate_printf(ENTRY *f)
{
ENTRY *e;
char *p, *name;
int l, n;
errlog(BEGIN, "generate_printf");
(void) fprintf(Bodyfp, " fprintf(ABISTREAM, \"");
p = &arglist[0];
l = (int)sizeof (arglist);
*p = NULL;
for (e = symtab_get_first_arg(); e != NULL; e = symtab_get_next_arg()) {
errlog(TRACING, "arglist = '%s'", arglist);
if (is_void(e)) {
/* This placeholder means there are no real args. */
break;
}
/* Insert punctuation. */
if (p != &arglist[0]) {
(void) fprintf(Bodyfp, ", ");
}
if (*(name = name_of(e)) == NULL) {
/* It's a varargs indicator instead */
(void) fprintf(Bodyfp, "...");
} else {
(void) fprintf(Bodyfp, "%s = ", name);
n = prepare_printf_part(e, name, p, l);
l -= n;
p += n;
*(p+1) = NULL;
}
}
if (is_void(f) || symtab_get_nonreturn() == YES) {
/* It is a function returning void, or a function */
/* which doesn't return. Close off args. */
(void) fprintf(Bodyfp, ")\"");
} else {
/* Make some more printf for the return type. */
(void) fprintf(Bodyfp, ") = ");
(void) prepare_printf_part(f, "_return", p, l);
(void) fprintf(Bodyfp, "\"");
}
(void) fprintf(Bodyfp, "%s);\n", arglist);
errlog(END, "}");
}
/*
* prepare_printf_part -- do one element of a printf/argument string,
* for printing non-verbose parameter lists
*/
static int
prepare_printf_part(ENTRY *e, char *name, char *place, int size)
{
char *bt;
int li;
errlog(BEGIN, "prepare_printf_part() {");
errlog(TRACING, "name = '%s'", name);
bt = basetype_of(e);
li = levels_of(e);
if (li == 1 && (strcmp(bt, "char") == 0)) {
/* It's a string, print the beginning of it. */
(void) fputs("\\\"%.*s\\\"", Bodyfp);
size = snprintf(place, size,
/*CSTYLED*/
",\n\tabi_strpsz, (%s) ? %s : nilstr",
name, name);
} else {
/* Just print a hex value */
(void) fprintf(Bodyfp, "%s", "0x%p");
size = snprintf(place, size, ", \n\t%s", name);
}
errlog(TRACING, "place='%s'\n", place);
errlog(END, "}");
return (size);
}
/*
* generate_printfunc_calls -- generate print commands for primitive types
* and calls to print functions for composite types, cleanly.
* Needs to know about base types of primitives, difference
* between primitives and composite types: TBD.
*/
void
generate_printfunc_calls(ENTRY *f)
{
ENTRY *e;
char *name;
char *pf_str_name;
int li;
char *format;
errlog(BEGIN, "generate_printfunc_calls() {");
for (e = symtab_get_first_arg(); e != NULL; e = symtab_get_next_arg()) {
if (is_void(e)) {
break;
}
if (*(name = name_of(e)) == NULL) {
(void) fprintf(Bodyfp, " fputs(\" ...\\n\", "
"ABISTREAM);\n");
}
errlog(TRACING, "name = '%s'\n", name);
(void) fprintf(Bodyfp,
" fprintf(ABISTREAM, \" %s = \");\n",
name);
pf_str_name = space_to_uscore(basetype_of(e));
/*
* If we're dealing with a scalar (non-pointer) then
* we need to call the printer with a &
*/
li = levels_of(e);
if (li)
format = "\tspf_prtype(ABISTREAM, pf_%s_str, %d, "
"(void const *)%s);\n";
else
format = "\tspf_prtype(ABISTREAM, pf_%s_str, %d, "
"(void const *)&%s);\n";
(void) fprintf(Bodyfp, format, pf_str_name, li, name);
free(pf_str_name);
}
if (is_void(f)) {
/*EMPTY*/;
} else {
pf_str_name = space_to_uscore(basetype_of(f));
li = levels_of(f);
if (li)
format = "\tspf_prtype(ABISTREAM, pf_%s_str, %d, "
"(void const *)_return);\n";
else
format = "\tspf_prtype(ABISTREAM, pf_%s_str, %d, "
"(void const *)&_return);\n";
(void) fputs(" fputs(retstr, ABISTREAM);\n", Bodyfp);
(void) fprintf(Bodyfp, format, pf_str_name, li);
free(pf_str_name);
}
errlog(END, "}");
}
/*
* Print Function Pointers -- definition, declaration and initialization.
* Use is above...
*/
/*
* generate_print_definitions -- generate variable definitions and
* initialize them to NULL.
* These will be set non-null by a lazy evaluation in the
* main.c file if and only if the print function will be used.
* All print functions which can be called must be defined.
*/
void
generate_print_definitions(FILE *fp)
{
char *print_type,
*c_type,
*pf_str_name;
errlog(BEGIN, "generate_print_definitions() {");
for (print_type = db_get_first_print_type();
print_type != NULL;
print_type = db_get_next_print_type()) {
c_type = strchr(print_type, ','); /* Safe by construction. */
*c_type++ = NULL;
errlog(TRACING, "print_type=%s\n", print_type);
pf_str_name = space_to_uscore(print_type);
(void) fprintf(fp,
"char const *pf_%s_str = \"%s\";\n",
pf_str_name, print_type);
free(pf_str_name);
*--c_type = ',';
}
errlog(END, "}");
}
/*
* generate_print_declarations -- generate variable declarations
* for the strings that'll be used as arguments to the type
* printing function.
*/
void
generate_print_declarations(FILE *fp)
{
char *print_type,
*c_type,
*pf_str_name;
errlog(BEGIN, "generate_print_declarations() {");
for (print_type = symtab_get_first_print_type();
print_type != NULL;
print_type = symtab_get_next_print_type()) {
errlog(TRACING, "print_type, c_type=%s\n", print_type);
c_type = strchr(print_type, ','); /* Safe by construction. */
*c_type++ = NULL;
pf_str_name = space_to_uscore(print_type);
(void) fprintf(fp, "extern char const *pf_%s_str;\n",
pf_str_name);
free(pf_str_name);
*--c_type = ',';
}
errlog(END, "}");
}
/*
* is_void -- see if a type is void.
*/
int
is_void(ENTRY *e)
{
if ((e != NULL) &&
levels_of(e) == 0 && (strcmp(basetype_of(e), "void") == 0))
return (1);
else
return (0);
}
static char *
space_to_uscore(char const *str)
{
char *strp, *p;
strp = strdup(str);
assert(strp != NULL, "strdup failed");
for (p = strp; *p != '\0'; p++)
if (*p == ' ')
*p = '_';
return (strp);
}