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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
Clif - A C-like Interpreter Framework
Copyright (C) 1998, 2000 L. Koren
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; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
struct var_s
{
char *adr;
int offset;
char *name;
};
#include <stdio.h>
#include "allocx.h"
#include "flags.h"
#include "global.h"
#include "type.h"
#include "tables.h"
#include "type.h"
#include "struct.h"
#include "comp_maint.h"
#include "instr.h"
#include "geninstr.h"
#include "pso.h"
/* Lookup in tables of local variables, if the variable is not found
in the table of global variables. Setting of addresses for code
generation. */
void
lookup_tables (var_name, variable)
char *var_name;
struct var_s variable[];
{
struct ident_tab_loc *loc_var;
if (NULL == (loc_var = point_loc (var_name)))
{
struct ident_tab *var;
var = point (var_name);
if (NULL == var)
COMPILE_ONLY;
if ((STRUCT_P(var->type)
|| UNION_P(var->type))
&& -1 == add_to_ident_list ())
COMPILE_ONLY;
variable[++set].adr = var->adr;
variable[set].name = var_name;
variable[set].offset = 0;
type_com[set] = var->type;
}
else
{
/* Address is non NULL only if the
local variable is declared static. */
if (NULL != loc_var->adr)
{
variable[set].offset = 0;
variable[set].adr = loc_var->adr;
variable[set].name = var_name;
}
else
{
/* First part of the offset is set in the
point_loc function. */
variable[set].offset += loc_var->offset;
variable[set].adr = NULL;
variable[set].name = var_name;
}
type_com[set] = loc_var->type;
}
if (NULL == type_com[set]->output)
type_ac[set] = type_com[set]->attribute.arit_class;
else if (LOCAL_P(type_com[set])
|| REMOTE_P(type_com[set]))
{
type_ac[set] =
type_com[set]->output->attribute.arit_class;
proc_name_text[++proc] = text;
}
else if (ARRAY_P(type_com[set]))
{
type_ac[set] =
type_com[set]->output->attribute.arit_class;
array_subscript (type_com[set]->input);
}
else if (POINTER_P(type_com[set]))
type_ac[set] = LONG_AC | INTEGER;
kodp4 = kodp;
if (0 < variable[set].offset)
{
if (call_by_value)
{
if (ARRAY_P(type_com[set]))
{
GEN_PUSHArr(variable[set].offset);
}
else
{
GEN_PUSHAr(variable[set].offset);
}
}
else if (call_by_reference)
{
GEN_PUSHArr(variable[set].offset);
}
GENCODE;
}
else if (0 > variable[set].offset)
{
GEN_PUSHAr(variable[set].offset); GENCODE;
}
else if (! LOCAL_P(type_com[set])
&& ! REMOTE_P(type_com[set]))
{
GEN_PUSHA(variable[set].adr); GENCODE;
}
}
/* The typedef structure (only the beginning part) is copied, if
any non simple part was inserted, i.e. pointer, function, array,
struct, etc. */
void
typedef_copy (type)
struct internal_type *type;
{
typeh[type_spec_count] = (struct internal_type *)
allocate (sizeof(struct internal_type),
scope_level > PERM ? BLOCK : PERM);
init_zero ((char *)typeh[type_spec_count],
sizeof(struct internal_type));
typeh[type_spec_count]->attribute.function_class =
SIMPLE;
typeh[type_spec_count]->attribute.type_qualifier =
UNDEF_TQ;
typeh[type_spec_count]->attribute.arit_class =
UNUSED_AC;
typeh[type_spec_count]->attribute.storage_class_specifier =
TYPEDEF_SC;
typeh[type_spec_count]->output = type;
}
/* For cast operator, size of operand is returned. */
int
set_memory_size (arit_class)
enum intern_arit_class arit_class;
{
switch (arit_class)
{
case INTEGER:
case SIGNED_AC | INTEGER:
return sizeof (int);
case UNSIGNED_AC | INTEGER:
return sizeof (unsigned int);
case LONG_AC | INTEGER:
case LONG_AC | SIGNED_AC | INTEGER:
return sizeof (long int);
case SHORT_AC | INTEGER:
case SHORT_AC | SIGNED_AC | INTEGER:
return sizeof (short int);
case LONG_AC | UNSIGNED_AC | INTEGER:
return sizeof (long unsigned int);
case SHORT_AC | UNSIGNED_AC | INTEGER:
return sizeof (short unsigned int);
case DOUB:
return sizeof (double);
case LONG_AC | DOUB:
return sizeof (long double);
case FLT:
return sizeof (float);
case CHR:
/* Moze byt este problem so zarovnanim */
return sizeof (char);
case SIGNED_AC | CHR:
return sizeof (signed char);
case UNSIGNED_AC | CHR:
return sizeof (unsigned char);
case VID:
default:
return 0;
}
return 0;
}
|
