1 /*******************************************************************************
2 Copyright (c) 2016, Michael Wallner <mike@php.net>.
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met:
8 * Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
14 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
18 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
21 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
22 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *******************************************************************************/
26 #include "php_psi_stdinc.h"
31 struct psi_decl_struct
* psi_decl_struct_init(const char *name
,
32 struct psi_plist
*args
)
34 struct psi_decl_struct
*s
= calloc(1, sizeof(*s
));
35 s
->name
= strdup(name
);
40 void psi_decl_struct_free(struct psi_decl_struct
**s_ptr
)
43 struct psi_decl_struct
*s
= *s_ptr
;
50 psi_plist_free(s
->args
);
52 if (s
->engine
.type
&& s
->engine
.dtor
) {
53 s
->engine
.dtor(s
->engine
.type
);
60 void psi_decl_struct_dump(int fd
, struct psi_decl_struct
*strct
)
62 dprintf(fd
, "struct %s::(%zu, %zu)", strct
->name
, strct
->align
,
64 if (psi_plist_count(strct
->args
)) {
65 psi_decl_type_dump_args_with_layout(fd
, strct
->args
, 0);
71 struct psi_decl_arg
*psi_decl_struct_get_arg(struct psi_decl_struct
*s
,
72 struct psi_decl_var
*var
)
75 return psi_decl_arg_get_by_var(var
, s
->args
, NULL
);
81 bool psi_decl_struct_validate(struct psi_data
*data
, struct psi_decl_struct
*s
,
82 struct psi_validate_stack
*type_stack
)
84 size_t i
, pos
, len
, size
, align
;
85 struct psi_decl_arg
*darg
, *prev_arg
;
87 if (psi_validate_stack_has_struct(type_stack
, s
->name
)) {
90 psi_validate_stack_add_struct(type_stack
, s
->name
, s
);
92 if (!s
->size
&& !psi_plist_count(s
->args
)) {
93 data
->error(data
, s
->token
, PSI_WARNING
,
94 "Cannot compute size of empty struct '%s'", s
->name
);
98 for (i
= 0; psi_plist_get(s
->args
, i
, &darg
); ++i
) {
99 darg
->var
->arg
= darg
;
101 if (!psi_decl_arg_validate(data
, darg
, type_stack
)) {
105 if (darg
->layout
&& darg
->layout
->len
) {
106 pos
= darg
->layout
->pos
;
107 align
= psi_decl_arg_align(darg
, &pos
, &len
);
110 data
->error(data
, darg
->token
, PSI_WARNING
,
111 "Computed zero alignment of %s.%s of type '%s'",
112 len
, s
->name
, darg
->var
->name
, darg
->type
->name
);
116 if (darg
->layout
->len
!= len
) {
117 data
->error(data
, darg
->token
, PSI_WARNING
,
118 "Computed size %zu of %s.%s does not match"
119 " pre-defined size %zu of type '%s'",
120 len
, s
->name
, darg
->var
->name
, darg
->layout
->len
,
123 if (darg
->layout
->pos
!= pos
) {
124 data
->error(data
, darg
->token
, PSI_WARNING
,
125 "Computed offset %zu of %s.%s does not match"
126 " pre-defined offset %zu",
127 pos
, s
->name
, darg
->var
->name
, darg
->layout
->pos
);
131 if (prev_arg
->layout
->bfw
&& darg
->layout
->bfw
) {
132 struct psi_decl_type
*real
= NULL
;
133 size_t max_bfw
= 8 * psi_decl_type_get_size(prev_arg
->type
, &real
);
135 switch (real
->type
) {
146 data
->error(data
, darg
->token
, PSI_WARNING
,
147 "Unsupported type for bit field: %s", real
->name
);
150 darg
->layout
->bfw
->pos
= prev_arg
->layout
->bfw
->pos
+ prev_arg
->layout
->bfw
->len
;
151 if (max_bfw
>= darg
->layout
->bfw
->pos
+ darg
->layout
->bfw
->len
) {
152 pos
= prev_arg
->layout
->pos
;
154 darg
->layout
->bfw
->pos
= 0;
155 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
158 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
164 align
= psi_decl_arg_align(darg
, &pos
, &len
);
167 if (darg
->layout
->pos
!= pos
) {
168 data
->error(data
, darg
->token
, PSI_WARNING
,
169 "Computed offset %zu of %s.%s does not match"
170 " pre-defined offset %zu",
171 pos
, s
->name
, darg
->var
->name
, darg
->layout
->pos
);
173 darg
->layout
->pos
= pos
;
174 darg
->layout
->len
= len
;
176 darg
->layout
= psi_layout_init(pos
, len
, NULL
);
180 if (align
> s
->align
) {
186 if (psi_plist_count(s
->args
)) {
187 psi_plist_sort(s
->args
, psi_layout_sort_cmp
, NULL
);
188 psi_plist_get(s
->args
, psi_plist_count(s
->args
) - 1, &darg
);
190 size
= darg
->layout
->pos
+ darg
->layout
->len
;
191 if (s
->size
< size
) {
192 s
->size
= psi_align(size
, s
->align
);
199 size_t psi_decl_struct_get_align(struct psi_decl_struct
*s
)
202 s
->align
= psi_decl_type_get_args_align(s
->args
);