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(zend_string
*name
,
32 struct psi_plist
*args
)
34 struct psi_decl_struct
*s
= calloc(1, sizeof(*s
));
35 s
->name
= zend_string_copy(name
);
40 void psi_decl_struct_free(struct psi_decl_struct
**s_ptr
)
43 struct psi_decl_struct
*s
= *s_ptr
;
46 psi_token_free(&s
->token
);
48 psi_plist_free(s
->args
);
50 if (s
->engine
.type
&& s
->engine
.dtor
) {
51 s
->engine
.dtor(s
->engine
.type
);
53 zend_string_release(s
->name
);
58 void psi_decl_struct_dump(int fd
, struct psi_decl_struct
*strct
)
60 dprintf(fd
, "struct %s::(%zu, %zu)", strct
->name
->val
, strct
->align
,
62 if (psi_plist_count(strct
->args
)) {
63 psi_decl_type_dump_args_with_layout(fd
, strct
->args
, 0);
69 struct psi_decl_arg
*psi_decl_struct_get_arg(struct psi_decl_struct
*s
,
70 struct psi_decl_var
*var
)
73 return psi_decl_arg_get_by_var(var
, s
->args
, NULL
);
79 bool psi_decl_struct_validate(struct psi_data
*data
, struct psi_decl_struct
*s
,
80 struct psi_validate_scope
*scope
)
82 size_t i
, pos
= 0, len
= 0;
83 struct psi_decl_arg
*darg
, *prev_arg
;
88 if (psi_validate_scope_has_struct(scope
, s
->name
)) {
92 if (!s
->size
&& !psi_plist_count(s
->args
)) {
93 /* TODO: return true and check those structs are only used by address */
94 /* suppress needless warning
95 data->error(data, s->token, PSI_WARNING, "Empty struct %s",
101 psi_validate_scope_add_struct(scope
, s
->name
, s
);
103 for (i
= 0; psi_plist_get(s
->args
, i
, &darg
); ++i
) {
106 darg
->var
->arg
= darg
;
108 if (!psi_decl_arg_validate(data
, darg
, scope
)) {
109 psi_validate_scope_del_struct(scope
, s
->name
);
113 if (darg
->layout
&& darg
->layout
->len
) {
114 pos
= darg
->layout
->pos
;
115 align
= psi_decl_arg_align(darg
, &pos
, &len
);
118 data
->error(data
, darg
->token
, PSI_WARNING
,
119 "Computed zero alignment of %s.%s of type '%s'",
120 len
, s
->name
->val
, darg
->var
->name
->val
,
121 darg
->type
->name
->val
);
122 psi_validate_scope_del_struct(scope
, s
->name
);
126 if (darg
->layout
->len
!= len
) {
127 data
->error(data
, darg
->token
, PSI_WARNING
,
128 "Computed size %zu of %s.%s does not match"
129 " pre-defined size %zu of type '%s'",
130 len
, s
->name
->val
, darg
->var
->name
->val
,
131 darg
->layout
->len
, darg
->type
->name
->val
);
133 if (darg
->layout
->pos
!= pos
) {
134 data
->error(data
, darg
->token
, PSI_WARNING
,
135 "Computed offset %zu of %s.%s does not match"
136 " pre-defined offset %zu",
137 pos
, s
->name
->val
, darg
->var
->name
->val
,
142 if (prev_arg
->layout
&& prev_arg
->layout
->bfw
&& darg
->layout
&& darg
->layout
->bfw
) {
143 struct psi_decl_type
*real
= NULL
;
144 size_t max_bfw
= 8 * psi_decl_type_get_size(prev_arg
->type
, &real
);
146 switch (real
->type
) {
157 data
->error(data
, darg
->token
, PSI_WARNING
,
158 "Unsupported type for bit field: %s",
160 psi_validate_scope_del_struct(scope
, s
->name
);
163 darg
->layout
->bfw
->pos
= prev_arg
->layout
->bfw
->pos
+ prev_arg
->layout
->bfw
->len
;
164 if (max_bfw
>= darg
->layout
->bfw
->pos
+ darg
->layout
->bfw
->len
) {
165 pos
= prev_arg
->layout
->pos
;
167 darg
->layout
->bfw
->pos
= 0;
168 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
171 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
177 align
= psi_decl_arg_align(darg
, &pos
, &len
);
180 if (darg
->layout
->pos
!= pos
&& !darg
->layout
->bfw
) {
181 data
->error(data
, darg
->token
, PSI_WARNING
,
182 "Computed offset %zu of %s.%s does not match"
183 " pre-defined offset %zu",
184 pos
, s
->name
->val
, darg
->var
->name
->val
,
187 darg
->layout
->pos
= pos
;
188 darg
->layout
->len
= len
;
190 darg
->layout
= psi_layout_init(pos
, len
, NULL
);
194 if (align
> s
->align
) {
200 if (psi_plist_count(s
->args
)) {
203 psi_plist_sort(s
->args
, psi_layout_sort_cmp
, NULL
);
204 psi_plist_get(s
->args
, psi_plist_count(s
->args
) - 1, &darg
);
206 size
= darg
->layout
->pos
+ darg
->layout
->len
;
207 if (s
->size
< size
) {
208 s
->size
= psi_align(size
, s
->align
);
217 size_t psi_decl_struct_get_align(struct psi_decl_struct
*s
)
223 s
->align
= psi_decl_type_get_args_align(s
->args
);