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 *******************************************************************************/
29 # include "php_config.h"
35 struct psi_decl_struct
* psi_decl_struct_init(zend_string
*name
,
36 struct psi_plist
*args
)
38 struct psi_decl_struct
*s
= pecalloc(1, sizeof(*s
), 1);
39 s
->name
= zend_string_copy(name
);
44 void psi_decl_struct_free(struct psi_decl_struct
**s_ptr
)
47 struct psi_decl_struct
*s
= *s_ptr
;
50 psi_token_free(&s
->token
);
52 psi_plist_free(s
->args
);
54 zend_string_release(s
->name
);
59 void psi_decl_struct_dump(struct psi_dump
*dump
, struct psi_decl_struct
*strct
)
61 PSI_DUMP(dump
, "struct %s::(%zu, %zu)", strct
->name
->val
, strct
->align
,
63 if (psi_plist_count(strct
->args
)) {
64 psi_decl_type_dump_args_with_layout(dump
, strct
->args
, 0);
70 struct psi_decl_arg
*psi_decl_struct_get_arg(struct psi_decl_struct
*s
,
71 struct psi_decl_var
*var
)
74 return psi_decl_arg_get_by_var(var
, s
->args
, NULL
);
80 bool psi_decl_struct_validate(struct psi_data
*data
, struct psi_decl_struct
*s
,
81 struct psi_validate_scope
*scope
)
83 size_t i
, pos
= 0, len
= 0;
84 struct psi_decl_arg
*darg
, *prev_arg
;
89 if (psi_validate_scope_has_struct(scope
, s
->name
)) {
93 if (!s
->size
&& !psi_plist_count(s
->args
)) {
94 /* TODO: return true and check those structs are only used by address */
95 /* suppress needless warning
96 data->error(data, s->token, PSI_WARNING, "Empty struct %s",
102 psi_validate_scope_add_struct(scope
, s
->name
, s
);
104 for (i
= 0; psi_plist_get(s
->args
, i
, &darg
); ++i
) {
107 darg
->var
->arg
= darg
;
109 if (!psi_decl_arg_validate(data
, darg
, scope
)) {
110 psi_validate_scope_del_struct(scope
, s
->name
);
114 if (darg
->layout
&& darg
->layout
->len
) {
115 pos
= darg
->layout
->pos
;
116 align
= psi_decl_arg_align(darg
, &pos
, &len
);
119 data
->error(data
, darg
->token
, PSI_WARNING
,
120 "Computed zero alignment of %s.%s of type '%s'",
121 len
, s
->name
->val
, darg
->var
->name
->val
,
122 darg
->type
->name
->val
);
123 psi_validate_scope_del_struct(scope
, s
->name
);
127 if (darg
->layout
->len
!= len
) {
128 data
->error(data
, darg
->token
, PSI_WARNING
,
129 "Computed size %zu of %s.%s does not match"
130 " pre-defined size %zu of type '%s'",
131 len
, s
->name
->val
, darg
->var
->name
->val
,
132 darg
->layout
->len
, darg
->type
->name
->val
);
134 if (darg
->layout
->pos
!= pos
) {
135 data
->error(data
, darg
->token
, PSI_WARNING
,
136 "Computed offset %zu of %s.%s does not match"
137 " pre-defined offset %zu",
138 pos
, s
->name
->val
, darg
->var
->name
->val
,
143 if (prev_arg
->layout
&& prev_arg
->layout
->bfw
&& darg
->layout
&& darg
->layout
->bfw
) {
144 struct psi_decl_type
*real
= NULL
;
145 size_t max_bfw
= 8 * psi_decl_type_get_size(prev_arg
->type
, &real
);
147 switch (real
->type
) {
158 data
->error(data
, darg
->token
, PSI_WARNING
,
159 "Unsupported type for bit field: %s",
161 psi_validate_scope_del_struct(scope
, s
->name
);
164 darg
->layout
->bfw
->pos
= prev_arg
->layout
->bfw
->pos
+ prev_arg
->layout
->bfw
->len
;
165 if (max_bfw
>= darg
->layout
->bfw
->pos
+ darg
->layout
->bfw
->len
) {
166 pos
= prev_arg
->layout
->pos
;
168 darg
->layout
->bfw
->pos
= 0;
169 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
172 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
178 align
= psi_decl_arg_align(darg
, &pos
, &len
);
181 if (darg
->layout
->pos
!= pos
&& !darg
->layout
->bfw
) {
182 data
->error(data
, darg
->token
, PSI_WARNING
,
183 "Computed offset %zu of %s.%s does not match"
184 " pre-defined offset %zu",
185 pos
, s
->name
->val
, darg
->var
->name
->val
,
188 darg
->layout
->pos
= pos
;
189 darg
->layout
->len
= len
;
191 darg
->layout
= psi_layout_init(pos
, len
, NULL
);
195 if (align
> s
->align
) {
201 if (psi_plist_count(s
->args
)) {
204 psi_plist_sort(s
->args
, psi_layout_sort_cmp
, NULL
);
205 psi_plist_get(s
->args
, psi_plist_count(s
->args
) - 1, &darg
);
207 size
= darg
->layout
->pos
+ darg
->layout
->len
;
208 if (s
->size
< size
) {
209 s
->size
= psi_align(size
, s
->align
);
218 size_t psi_decl_struct_get_align(struct psi_decl_struct
*s
)
224 s
->align
= psi_decl_type_get_args_align(s
->args
);