1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/* yForth? - Written by Luca Padovani (C) 1996/97
* ------------------------------------------------------------------------
* This software is FreeWare as long as it comes with this header in each
* source file, anyway you can use it or any part of it whatever
* you want. It comes without any warranty, so use it at your own risk.
* ------------------------------------------------------------------------
* Module name: yfinit.c
* Abstract: Allocate memory for the main structures of the
* environment and initialize the environment itself.
*/
#include <stdlib.h>
#include <malloc.h>
#include <stdio.h>
#include "yforth.h"
#include "core.h"
#include "coree.h"
#include "search.h"
/* init_stacks: allocate memory for the stacks */
void init_stacks(int dstack_size, int rstack_size, int fstack_size) {
sp_base = (Cell *) malloc(dstack_size * sizeof(Cell));
rp_base = (Cell *) malloc(rstack_size * sizeof(Cell));
fp_base = (Real *) malloc(fstack_size * sizeof(Real));
if (sp_base && rp_base && (fp_base || !fstack_size)) {
sp = sp_top = sp_base + dstack_size;
rp = rp_top = rp_base + rstack_size;
fp = fp_top = fp_base + fstack_size;
} else {
fprintf(stderr, "Stack sizes: %d %d %d. Not enough memory.\n", dstack_size,
rstack_size, fstack_size);
exit(-1);
}
}
/* init_data_space: allocate memory for the data-space dictionary */
void init_data_space(int dspace_size) {
dp0 = _dp = (Char *) malloc(dspace_size * sizeof(Cell));
if (!_dp) {
printf("Data Space size: %d. Not enough memory.\n", dspace_size);
exit(-1);
}
}
/* init_tib: allocate memory for the TIB */
void init_tib(int size) {
_tib = (Char *) malloc(size * sizeof(Char));
if (!_tib) {
fprintf(stderr, "Tib size: %d. Not enough memory.\n", size);
exit(-1);
}
}
/* init_pad: allocate memory for the PAD */
void init_pad(int size) {
_pad = (Char *) malloc(size * sizeof(Char));
if (!_pad) {
fprintf(stderr, "PAD size: %d. Not enough memory.\n", size);
exit(-1);
}
}
/* init_pnos: allocate memory for PNOS, note that the size of PNOS is
* determined by the actual size of a double cell.
*/
void init_pnos() {
pnos_size = sizeof(DCell) * 8 + 2; /* plus a space and eventually a '-' */
pnos = (Char *) malloc(pnos_size * sizeof(Char));
if (!pnos) {
fprintf(stderr, "Can't allocate PNOS.\n");
exit(-1);
}
}
/* init_forth_environment: perform actual inizialization of the dictionary
* only if "reload" is true, then initialize the value of variables
* of the forth environment. This variable must be initialized even in
* the case of an image file since they're not inside the dictionary,
* but are simply C variables.
*/
void init_forth_environment(int reload) {
if (reload) {
struct vocabulary *v;
_wordlist();
list[0] = forth_wid = voc = (struct vocabulary *) *sp++;
_last = NULL;
init_vocabulary(&_dp);
}
_base = 10;
_env_slash_counted_string = (1 << (8 * sizeof(Char))) - 1;
_env_slash_hold = pnos_size;
_env_slash_pad = pad_size;
_env_address_unit_bits = 8 * sizeof(Char);
_env_core = FFLAG(1);
_env_core_ext = FFLAG(COREE_DEF);
_env_floored = FFLAG(FLOORED_DIVISION);
_env_max_char = _env_slash_counted_string;
_env_max_d = MAX_D;
_env_max_n = MAX_N;
_env_max_u = MAX_U;
_env_max_ud = MAX_UD;
_env_return_stack_cells = rstack_size;
_env_stack_cells = dstack_size;
_env_double = FFLAG(DOUBLE_DEF);
_env_double_ext = FFLAG(DOUBLEE_DEF);
_env_floating = FFLAG(FLOAT_DEF);
_env_floating_stack = fstack_size;
_env_max_float = MAX_F;
_env_floating_ext = FFLAG(FLOATE_DEF);
_env_memory_alloc = FFLAG(MEMALL_DEF);
_env_memory_alloc_ext = FFLAG(MEMALLE_DEF);
_env_search_order = FFLAG(SEARCH_DEF);
_env_search_order_ext = FFLAG(SEARCHE_DEF);
_env_wordlists = WORD_LISTS;
_env_tools = FFLAG(TOOLS_DEF);
_env_tools_ext = FFLAG(TOOLSE_DEF);
_env_number_locals = MAX_LOCALS;
_env_locals = FFLAG(LOCALS_DEF);
_env_locals_ext = FFLAG(LOCALSE_DEF);
_env_facility = FFLAG(FACILITY_DEF);
_env_facility_ext = FFLAG(FACILITYE_DEF);
_env_block = FFLAG(BLOCK_DEF);
_env_block_ext = FFLAG(BLOCKE_DEF);
_env_exception = FFLAG(EXCEPTION_DEF);
_env_exception_ext = FFLAG(EXCEPTIONE_DEF);
_env_file = FFLAG(FILE_DEF);
_env_file_ext = FFLAG(FILEE_DEF);
_env_string = FFLAG(STRING_DEF);
_env_string_ext = FFLAG(STRINGE_DEF);
}
|
