69e0b662b890369d16552a628d98d017587ffac4
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 #define PSI_FUNC_REDIRS
32 #include "php_psi_posix.h"
34 struct psi_decl
*psi_decl_init(struct psi_decl_arg
*func
, struct psi_plist
*args
)
36 struct psi_decl
*d
= calloc(1, sizeof(*d
));
44 void psi_decl_free(struct psi_decl
**d_ptr
)
47 struct psi_decl
*d
= *d_ptr
;
51 psi_decl_abi_free(&d
->abi
);
52 psi_decl_arg_free(&d
->func
);
54 psi_plist_free(d
->args
);
60 void psi_decl_dump(int fd
, struct psi_decl
*decl
)
62 psi_decl_abi_dump(fd
, decl
->abi
);
64 psi_decl_arg_dump(fd
, decl
->func
, 0);
68 struct psi_decl_arg
*arg
;
70 for (i
= 0; psi_plist_get(decl
->args
, i
, &arg
); ++i
) {
74 psi_decl_arg_dump(fd
, arg
, 0);
83 static inline bool psi_decl_validate_func(struct psi_data
*data
,
84 struct psi_decl
*decl
, struct psi_decl_arg
*func
, void *dl
)
86 struct psi_func_redir
*redir
;
88 if (!func
->var
->name
) {
89 data
->error(data
, func
->token
, PSI_WARNING
, "Cannot load anonymous decl");
93 for (redir
= &psi_func_redirs
[0]; redir
->name
; ++redir
) {
94 if (!strcmp(func
->var
->name
, redir
->name
)) {
95 decl
->sym
= redir
->func
;
100 # define RTLD_NEXT ((void *) -1l)
103 # define RTLD_DEFAULT ((void *) 0)
105 decl
->sym
= dlsym(dl
?: RTLD_DEFAULT
, func
->var
->name
);
107 data
->error(data
, func
->token
, PSI_WARNING
,
108 "Failed to locate symbol '%s': %s", func
->var
->name
,
109 dlerror() ?: "not found");
116 bool psi_decl_validate(struct psi_data
*data
, struct psi_decl
*decl
, void *dl
,
117 struct psi_validate_stack
*type_stack
)
119 if (!psi_decl_validate_nodl(data
, decl
, type_stack
)) {
122 if (!psi_decl_validate_func(data
, decl
, decl
->func
, dl
)) {
129 bool psi_decl_validate_nodl(struct psi_data
*data
, struct psi_decl
*decl
,
130 struct psi_validate_stack
*type_stack
)
133 decl
->abi
= psi_decl_abi_init("default");
134 } else if (!psi_decl_abi_validate(data
, decl
->abi
)) {
135 data
->error(data
, decl
->abi
->token
, PSI_WARNING
,
136 "Invalid calling convention: '%s'", decl
->abi
->token
->text
);
139 if (!psi_decl_arg_validate(data
, decl
->func
, type_stack
)) {
144 struct psi_decl_arg
*arg
;
146 while (psi_plist_get(decl
->args
, i
++, &arg
)) {
147 if (!arg
->var
->name
) {
148 arg
->var
->name
= malloc(7);
149 snprintf(arg
->var
->name
, 6, "arg%zu", i
);
150 arg
->var
->fqn
= strdup(arg
->var
->name
);
152 if (!psi_decl_arg_validate(data
, arg
, type_stack
)) {