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
)
83 size_t i
, pos
, len
, size
, align
;
84 struct psi_decl_arg
*darg
, *prev_arg
;
86 if (!s
->size
&& !psi_plist_count(s
->args
)) {
87 data
->error(data
, s
->token
, PSI_WARNING
,
88 "Cannot compute size of empty struct '%s'", s
->name
);
92 for (i
= 0; psi_plist_get(s
->args
, i
, &darg
); ++i
) {
93 darg
->var
->arg
= darg
;
95 if (!psi_decl_arg_validate(data
, darg
)) {
99 if (darg
->layout
&& darg
->layout
->len
) {
100 pos
= darg
->layout
->pos
;
101 align
= psi_decl_arg_align(darg
, &pos
, &len
);
103 if (darg
->layout
->len
!= len
) {
104 data
->error(data
, darg
->token
, PSI_WARNING
,
105 "Computed size %zu of %s.%s does not match"
106 " pre-defined size %zu of type '%s'",
107 len
, s
->name
, darg
->var
->name
, darg
->layout
->len
,
110 if (darg
->layout
->pos
!= pos
) {
111 data
->error(data
, darg
->token
, PSI_WARNING
,
112 "Computed offset %zu of %s.%s does not match"
113 " pre-defined offset %zu",
114 pos
, s
->name
, darg
->var
->name
, darg
->layout
->pos
);
118 if (prev_arg
->layout
->bfw
&& darg
->layout
->bfw
) {
119 struct psi_decl_type
*real
= NULL
;
120 size_t max_bfw
= 8 * psi_decl_type_get_size(prev_arg
->type
, &real
);
122 switch (real
->type
) {
133 data
->error(data
, darg
->token
, PSI_WARNING
,
134 "Unsupported type for bit field: %s", real
->name
);
137 darg
->layout
->bfw
->pos
= prev_arg
->layout
->bfw
->pos
+ prev_arg
->layout
->bfw
->len
;
138 if (max_bfw
>= darg
->layout
->bfw
->pos
+ darg
->layout
->bfw
->len
) {
139 pos
= prev_arg
->layout
->pos
;
141 darg
->layout
->bfw
->pos
= 0;
142 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
145 pos
= prev_arg
->layout
->pos
+ prev_arg
->layout
->len
;
151 align
= psi_decl_arg_align(darg
, &pos
, &len
);
154 if (darg
->layout
->pos
!= pos
) {
155 data
->error(data
, darg
->token
, PSI_WARNING
,
156 "Computed offset %zu of %s.%s does not match"
157 " pre-defined offset %zu",
158 pos
, s
->name
, darg
->var
->name
, darg
->layout
->pos
);
160 darg
->layout
->pos
= pos
;
161 darg
->layout
->len
= len
;
163 darg
->layout
= psi_layout_init(pos
, len
, NULL
);
167 if (align
> s
->align
) {
173 if (psi_plist_count(s
->args
)) {
174 psi_plist_sort(s
->args
, psi_layout_sort_cmp
, NULL
);
175 psi_plist_get(s
->args
, psi_plist_count(s
->args
) - 1, &darg
);
177 size
= darg
->layout
->pos
+ darg
->layout
->len
;
178 if (s
->size
< size
) {
179 s
->size
= psi_align(size
, s
->align
);
186 size_t psi_decl_struct_get_align(struct psi_decl_struct
*s
)
189 s
->align
= psi_decl_type_get_args_align(s
->args
);