mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-18 17:00:49 +01:00
155 lines
4.1 KiB
C
155 lines
4.1 KiB
C
/* bcdefs.h: The single file to include all constants and type definitions. */
|
|
|
|
/* This file is part of bc written for MINIX.
|
|
Copyright (C) 1991, 1992 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License , or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
You may contact the author by:
|
|
e-mail: phil@cs.wwu.edu
|
|
us-mail: Philip A. Nelson
|
|
Computer Science Department, 9062
|
|
Western Washington University
|
|
Bellingham, WA 98226-9062
|
|
|
|
*************************************************************************/
|
|
|
|
/* Include the configuration file. */
|
|
#include "config.h"
|
|
|
|
/* Standard includes for all files. */
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <ctype.h>
|
|
#ifdef STRINGS_H
|
|
#include <strings.h>
|
|
#else
|
|
#include <string.h>
|
|
#endif
|
|
#ifndef NO_LIMITS
|
|
#include <limits.h>
|
|
#endif
|
|
|
|
/* Include the other definitions. */
|
|
#include "const.h"
|
|
#include "number.h"
|
|
|
|
|
|
/* These definitions define all the structures used in
|
|
code and data storage. This includes the representation of
|
|
labels. The "guiding" principle is to make structures that
|
|
take a minimum of space when unused but can be built to contain
|
|
the full structures. */
|
|
|
|
/* Labels are first. Labels are generated sequentially in functions
|
|
and full code. They just "point" to a single bye in the code. The
|
|
"address" is the byte number. The byte number is used to get an
|
|
actual character pointer. */
|
|
|
|
typedef struct bc_label_group
|
|
{
|
|
long l_adrs [ BC_LABEL_GROUP ];
|
|
struct bc_label_group *l_next;
|
|
} bc_label_group;
|
|
|
|
|
|
/* Each function has its own code segments and labels. There can be
|
|
no jumps between functions so labels are unique to a function. */
|
|
|
|
typedef struct arg_list
|
|
{
|
|
int av_name;
|
|
struct arg_list *next;
|
|
} arg_list;
|
|
|
|
typedef struct
|
|
{
|
|
char f_defined; /* Is this function defined yet. */
|
|
char *f_body[BC_MAX_SEGS];
|
|
int f_code_size;
|
|
bc_label_group *f_label;
|
|
arg_list *f_params;
|
|
arg_list *f_autos;
|
|
} bc_function;
|
|
|
|
/* Code addresses. */
|
|
typedef struct {
|
|
int pc_func;
|
|
int pc_addr;
|
|
} program_counter;
|
|
|
|
|
|
/* Variables are "pushable" (auto) and thus we need a stack mechanism.
|
|
This is built into the variable record. */
|
|
|
|
typedef struct bc_var
|
|
{
|
|
bc_num v_value;
|
|
struct bc_var *v_next;
|
|
} bc_var;
|
|
|
|
|
|
/* bc arrays can also be "auto" variables and thus need the same
|
|
kind of stacking mechanisms. */
|
|
|
|
typedef struct bc_array_node
|
|
{
|
|
union
|
|
{
|
|
bc_num n_num [NODE_SIZE];
|
|
struct bc_array_node *n_down [NODE_SIZE];
|
|
} n_items;
|
|
} bc_array_node;
|
|
|
|
typedef struct bc_array
|
|
{
|
|
bc_array_node *a_tree;
|
|
short a_depth;
|
|
} bc_array;
|
|
|
|
typedef struct bc_var_array
|
|
{
|
|
bc_array *a_value;
|
|
char a_param;
|
|
struct bc_var_array *a_next;
|
|
} bc_var_array;
|
|
|
|
|
|
/* For the stacks, execution and function, we need records to allow
|
|
for arbitrary size. */
|
|
|
|
typedef struct estack_rec {
|
|
bc_num s_num;
|
|
struct estack_rec *s_next;
|
|
} estack_rec;
|
|
|
|
typedef struct fstack_rec {
|
|
int s_val;
|
|
struct fstack_rec *s_next;
|
|
} fstack_rec;
|
|
|
|
|
|
/* The following are for the name tree. */
|
|
|
|
typedef struct id_rec {
|
|
char *id; /* The program name. */
|
|
/* A name == 0 => nothing assigned yet. */
|
|
int a_name; /* The array variable name (number). */
|
|
int f_name; /* The function name (number). */
|
|
int v_name; /* The variable name (number). */
|
|
short balance; /* For the balanced tree. */
|
|
struct id_rec *left, *right; /* Tree pointers. */
|
|
} id_rec;
|