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/* $NetBSD: lint2.h,v 1.2 1995/07/03 21:24:49 cgd Exp $ */
/*
* Copyright (c) 1994, 1995 Jochen Pohl
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Jochen Pohl for
* The NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "lint.h"
/*
* Types are described by structures of type type_t.
*/
typedef struct type {
tspec_t t_tspec; /* type specifier */
u_int t_const : 1; /* constant */
u_int t_volatile : 1; /* volatile */
u_int t_vararg : 1; /* function has variable number of arguments */
u_int t_isenum : 1; /* enum type */
u_int t_proto : 1; /* this is a prototype */
u_int t_istag : 1; /* tag with _t_tag valid */
u_int t_istynam : 1; /* tag with _t_tynam valid */
union {
int _t_dim; /* if the type is an ARRAY than this
is the dimension of the array. */
struct hte *_t_tag; /* hash table entry of tag if
t_isenum, STRUCT or UNION */
struct hte *_t_tynam; /* hash table entry of typename if
t_isenum, STRUCT or UNION */
struct type **_t_args; /* list of argument types if this
is a prototype */
} t_u;
struct type *t_subt; /* indirected type (array element, pointed to
type, type of return value) */
} type_t;
#define t_dim t_u._t_dim
#define t_tag t_u._t_tag
#define t_tynam t_u._t_tynam
#define t_args t_u._t_args
/*
* argument information
*
* Such a structure is created for each argument of a function call
* which is an integer constant or a constant string.
*/
typedef struct arginf {
int a_num; /* # of argument (1..) */
u_int a_zero : 1; /* argument is 0 */
u_int a_pcon : 1; /* msb of argument is not set */
u_int a_ncon : 1; /* msb of argument is set */
u_int a_fmt : 1; /* a_fstrg points to format string */
char *a_fstrg; /* format string */
struct arginf *a_nxt; /* information for next const. argument */
} arginf_t;
/*
* Keeps information about position in source file.
*/
typedef struct {
u_short p_src; /* index of name of translation unit
(the name which was specified at the
command line) */
u_short p_line; /* line number in p_src */
u_short p_isrc; /* index of (included) file */
u_short p_iline; /* line number in p_iline */
} pos_t;
/*
* Used for definitions and declarations
*
* To save memory, variable sized structures are used. If
* all s_va, s_prfl and s_scfl are not set, the memory allocated
* for a symbol is only large enough to keep the first member of
* struct sym, s_s.
*/
typedef struct sym {
struct {
pos_t s_pos; /* pos of def./decl. */
#ifndef lint
u_int s_def : 3; /* DECL, TDEF or DEF */
#else
def_t s_def;
#endif
u_int s_rval : 1; /* function has return value */
u_int s_osdef : 1; /* old style function definition */
u_int s_static : 1; /* symbol is static */
u_int s_va : 1; /* check only first s_nva arguments */
u_int s_prfl : 1; /* printflike */
u_int s_scfl : 1; /* scanflike */
u_short s_type; /* type */
struct sym *s_nxt; /* next symbol with same name */
} s_s;
short s_nva;
short s_nprfl;
short s_nscfl;
} sym_t;
#define s_pos s_s.s_pos
#define s_rval s_s.s_rval
#define s_osdef s_s.s_osdef
#define s_static s_s.s_static
#define s_def s_s.s_def
#define s_va s_s.s_va
#define s_prfl s_s.s_prfl
#define s_scfl s_s.s_scfl
#define s_type s_s.s_type
#define s_nxt s_s.s_nxt
/*
* Used to store informations about function calls.
*/
typedef struct fcall {
pos_t f_pos; /* position of call */
u_int f_rused : 1; /* return value used */
u_int f_rdisc : 1; /* return value discarded (casted to void) */
u_short f_type; /* types of expected return value and args */
arginf_t *f_args; /* information about constant arguments */
struct fcall *f_nxt; /* next call of same function */
} fcall_t;
/*
* Used to store information about usage of symbols other
* than for function calls.
*/
typedef struct usym {
pos_t u_pos; /* position */
struct usym *u_nxt; /* next usage */
} usym_t;
/*
* hash table entry
*/
typedef struct hte {
const char *h_name; /* name */
u_int h_used : 1; /* symbol is used */
u_int h_def : 1; /* symbol is defined */
u_int h_static : 1; /* static symbol */
sym_t *h_syms; /* declarations and definitions */
sym_t **h_lsym; /* points to s_nxt of last decl./def. */
fcall_t *h_calls; /* function calls */
fcall_t **h_lcall; /* points to f_nxt of last call */
usym_t *h_usyms; /* usage info */
usym_t **h_lusym; /* points to u_nxt of last usage info */
struct hte *h_link; /* next hte with same hash function */
} hte_t;
/* maps type indices into pointers to type structs */
#define TP(idx) (tlst[idx])
#include "externs2.h"
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