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
;
90 if (psi_validate_stack_has_struct(type_stack
, s
->name
)) {
94 if (!s
->size
&& !psi_plist_count(s
->args
)) {
95 data
->error(data
, s
->token
, PSI_WARNING
,
96 "Cannot compute size of empty struct '%s'", s
->name
);
100 psi_validate_stack_add_struct(type_stack
, s
->name
, s
);
102 for (i
= 0; psi_plist_get(s
->args
, i
, &darg
); ++i
) {
103 darg
->var
->arg
= darg
;
105 if (!psi_decl_arg_validate(data
, darg
, type_stack
)) {
106 psi_validate_stack_del_struct(type_stack
, s
->name
);
110 if (darg
->layout
&& darg
->layout
->len
) {
111 pos
= darg
->layout
->pos
;
112 align
= psi_decl_arg_align(darg
, &pos
, &len
);
115 data
->error(data
, darg
->token
, PSI_WARNING
,
116 "Computed zero alignment of %s.%s of type '%s'",
117 len
, s
->name
, darg
->var
->name
, darg
->type
->name
);
118 psi_validate_stack_del_struct(type_stack
, s
->name
);
122 if (darg
->layout
->len
!= len
) {
123 data
->error(data
, darg
->token
, PSI_WARNING
,
124 "Computed size %zu of %s.%s does not match"
125 " pre-defined size %zu of type '%s'",
126 len
, s
->name
, darg
->var
->name
, darg
->layout
->len
,
129 if (darg
->layout
->pos
!= pos
) {
130 data
->error(data
, darg
->token
, PSI_WARNING
,
131 "Computed offset %zu of %s.%s does not match"
132 " pre-defined offset %zu",
133 pos
, s
->name
, darg
->var
->name
, darg
->layout
->pos
);
137 if (prev_arg
->layout
&& prev_arg
->layout
->bfw
&& darg
->layout
&& darg
->layout
->bfw
) {
138 struct psi_decl_type
*real
= NULL
;
139 size_t max_bfw
= 8 * psi_decl_type_get_size(prev_arg
->type
, &real
);
141 switch (real
->type
) {
152 data
->error(data
, darg
->token
, PSI_WARNING
,
153 "Unsupported type for bit field: %s", real
->name
);
154 psi_validate_stack_del_struct(type_stack
, s
->name
);
157 darg
->layout
->bfw
->pos
= prev_arg
->layout
->bfw
->pos
+ prev_arg
->layout
->bfw
->len
;
158 if (max_bfw
>= darg
->layout
->bfw
->pos
+ darg
->layout
->bfw
->len
) {
159 pos
= prev_arg
->layout
->pos
;
161 darg
->layout
->bfw
->pos
= 0;
162 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
165 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
171 align
= psi_decl_arg_align(darg
, &pos
, &len
);
174 if (darg
->layout
->pos
!= pos
) {
175 data
->error(data
, darg
->token
, PSI_WARNING
,
176 "Computed offset %zu of %s.%s does not match"
177 " pre-defined offset %zu",
178 pos
, s
->name
, darg
->var
->name
, darg
->layout
->pos
);
180 darg
->layout
->pos
= pos
;
181 darg
->layout
->len
= len
;
183 darg
->layout
= psi_layout_init(pos
, len
, NULL
);
187 if (align
> s
->align
) {
193 if (psi_plist_count(s
->args
)) {
194 psi_plist_sort(s
->args
, psi_layout_sort_cmp
, NULL
);
195 psi_plist_get(s
->args
, psi_plist_count(s
->args
) - 1, &darg
);
197 size
= darg
->layout
->pos
+ darg
->layout
->len
;
198 if (s
->size
< size
) {
199 s
->size
= psi_align(size
, s
->align
);
208 size_t psi_decl_struct_get_align(struct psi_decl_struct
*s
)
214 s
->align
= psi_decl_type_get_args_align(s
->args
);