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
|
/*
* Bytecode utility functions
*
* Copyright (C) 2001-2007 Peter Johnson
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``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 OR OTHER CONTRIBUTORS 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 "util.h"
/*@unused@*/ RCSID("$Id$");
#include "libyasm-stdint.h"
#include "coretype.h"
#include "errwarn.h"
#include "intnum.h"
#include "expr.h"
#include "value.h"
#include "bytecode.h"
typedef struct bytecode_reserve {
/*@only@*/ /*@null@*/ yasm_expr *numitems; /* number of items to reserve */
unsigned int itemsize; /* size of each item (in bytes) */
} bytecode_reserve;
static void bc_reserve_destroy(void *contents);
static void bc_reserve_print(const void *contents, FILE *f, int indent_level);
static void bc_reserve_finalize(yasm_bytecode *bc, yasm_bytecode *prev_bc);
static int bc_reserve_elem_size(yasm_bytecode *bc);
static int bc_reserve_calc_len(yasm_bytecode *bc,
yasm_bc_add_span_func add_span,
void *add_span_data);
static int bc_reserve_tobytes(yasm_bytecode *bc, unsigned char **bufp, void *d,
yasm_output_value_func output_value,
/*@null@*/ yasm_output_reloc_func output_reloc);
static const yasm_bytecode_callback bc_reserve_callback = {
bc_reserve_destroy,
bc_reserve_print,
bc_reserve_finalize,
bc_reserve_elem_size,
bc_reserve_calc_len,
yasm_bc_expand_common,
bc_reserve_tobytes,
YASM_BC_SPECIAL_RESERVE
};
static void
bc_reserve_destroy(void *contents)
{
bytecode_reserve *reserve = (bytecode_reserve *)contents;
yasm_expr_destroy(reserve->numitems);
yasm_xfree(contents);
}
static void
bc_reserve_print(const void *contents, FILE *f, int indent_level)
{
const bytecode_reserve *reserve = (const bytecode_reserve *)contents;
fprintf(f, "%*s_Reserve_\n", indent_level, "");
fprintf(f, "%*sNum Items=", indent_level, "");
yasm_expr_print(reserve->numitems, f);
fprintf(f, "\n%*sItem Size=%u\n", indent_level, "", reserve->itemsize);
}
static void
bc_reserve_finalize(yasm_bytecode *bc, yasm_bytecode *prev_bc)
{
bytecode_reserve *reserve = (bytecode_reserve *)bc->contents;
/* multiply reserve expression into multiple */
if (!bc->multiple)
bc->multiple = reserve->numitems;
else
bc->multiple = yasm_expr_create_tree(bc->multiple, YASM_EXPR_MUL,
reserve->numitems, bc->line);
reserve->numitems = NULL;
}
static int
bc_reserve_elem_size(yasm_bytecode *bc)
{
bytecode_reserve *reserve = (bytecode_reserve *)bc->contents;
return reserve->itemsize;
}
static int
bc_reserve_calc_len(yasm_bytecode *bc, yasm_bc_add_span_func add_span,
void *add_span_data)
{
bytecode_reserve *reserve = (bytecode_reserve *)bc->contents;
bc->len += reserve->itemsize;
return 0;
}
static int
bc_reserve_tobytes(yasm_bytecode *bc, unsigned char **bufp, void *d,
yasm_output_value_func output_value,
/*@unused@*/ yasm_output_reloc_func output_reloc)
{
yasm_internal_error(N_("bc_reserve_tobytes called"));
/*@notreached@*/
return 1;
}
yasm_bytecode *
yasm_bc_create_reserve(yasm_expr *numitems, unsigned int itemsize,
unsigned long line)
{
bytecode_reserve *reserve = yasm_xmalloc(sizeof(bytecode_reserve));
/*@-mustfree@*/
reserve->numitems = numitems;
/*@=mustfree@*/
reserve->itemsize = itemsize;
return yasm_bc_create_common(&bc_reserve_callback, reserve, line);
}
const yasm_expr *
yasm_bc_reserve_numitems(yasm_bytecode *bc, unsigned int *itemsize)
{
bytecode_reserve *reserve;
if (bc->callback != &bc_reserve_callback)
return NULL;
reserve = (bytecode_reserve *)bc->contents;
*itemsize = reserve->itemsize;
return reserve->numitems;
}
|
