6 #undef PACKAGE_BUGREPORT
10 #undef PACKAGE_VERSION
14 #ifndef PSI_HAVE_FFI_CLOSURE_ALLOC
19 # include <sys/mman.h>
20 # ifndef MAP_ANONYMOUS
21 # define MAP_ANONYMOUS MAP_ANON
26 static void *psi_ffi_closure_alloc(size_t s
, void **code
)
28 #ifdef PSI_HAVE_FFI_CLOSURE_ALLOC
29 return ffi_closure_alloc(s
, code
);
31 *code
= mmap(NULL
, s
, PROT_EXEC
|PROT_WRITE
|PROT_READ
,
32 MAP_PRIVATE
|MAP_ANONYMOUS
, -1, 0);
33 if (MAP_FAILED
== *code
) {
42 static void psi_ffi_closure_free(void *c
)
44 #ifdef PSI_HAVE_FFI_CLOSURE_ALLOC
47 munmap(c
, sizeof(ffi_closure
));
51 static void psi_ffi_handler(ffi_cif
*signature
, void *_result
, void **_args
, void *_data
);
53 static inline ffi_abi
psi_ffi_abi(const char *convention
) {
54 return FFI_DEFAULT_ABI
;
56 static inline ffi_type
*psi_ffi_type(token_t t
) {
62 return &ffi_type_void
;
64 return &ffi_type_sint8
;
66 return &ffi_type_uint8
;
68 return &ffi_type_sint16
;
70 return &ffi_type_uint16
;
72 return &ffi_type_sint32
;
74 return &ffi_type_uint32
;
76 return &ffi_type_sint64
;
78 return &ffi_type_uint64
;
80 return &ffi_type_uchar
;
82 return &ffi_type_sint
;
84 return &ffi_type_float
;
86 return &ffi_type_double
;
89 static inline ffi_type
*psi_ffi_decl_type(decl_type
*type
) {
90 return psi_ffi_type(real_decl_type(type
)->type
);
92 static inline ffi_type
*psi_ffi_decl_arg_type(decl_arg
*darg
) {
93 if (darg
->var
->pointer_level
) {
94 return &ffi_type_pointer
;
96 return psi_ffi_decl_type(darg
->type
);
100 typedef struct PSI_LibffiContext
{
104 struct PSI_LibffiData
**list
;
109 typedef struct PSI_LibffiData
{
110 PSI_LibffiContext
*context
;
112 zend_internal_arg_info
*arginfo
;
114 ffi_closure
*closure
;
119 static inline PSI_LibffiData
*PSI_LibffiDataAlloc(PSI_LibffiContext
*context
, impl
*impl
) {
121 size_t i
, c
= impl
->decl
->args
? impl
->decl
->args
->count
: 0;
122 PSI_LibffiData
*data
= malloc(sizeof(*data
) + c
* sizeof(ffi_type
*));
124 data
->context
= context
;
126 data
->arginfo
= psi_internal_arginfo(impl
);
127 for (i
= 0; i
< c
; ++i
) {
128 data
->params
[i
] = psi_ffi_decl_arg_type(impl
->decl
->args
->args
[i
]);
130 data
->params
[c
] = NULL
;
134 psi_ffi_abi(data
->impl
->decl
->abi
->convention
),
136 psi_ffi_decl_arg_type(data
->impl
->decl
->func
),
138 ZEND_ASSERT(FFI_OK
== rc
);
140 data
->closure
= psi_ffi_closure_alloc(sizeof(ffi_closure
), &data
->code
);
141 ZEND_ASSERT(data
->closure
!= NULL
);
142 #if PSI_HAVE_FFI_PREP_CLOSURE_LOC
143 rc
= ffi_prep_closure_loc(
149 ZEND_ASSERT(FFI_OK
== rc
);
150 #elif PSI_HAVE_FFI_PREP_CLOSURE
151 rc
= ffi_prep_closure(data
->code
, &context
->signature
, psi_ffi_handler
, data
);
152 ZEND_ASSERT(FFI_OK
== rc
);
154 # error "Neither ffi_prep_closure() nor ffi_prep_closure_loc() available"
157 context
->data
.list
= realloc(context
->data
.list
, ++context
->data
.count
* sizeof(*context
->data
.list
));
158 context
->data
.list
[context
->data
.count
-1] = data
;
163 static inline void PSI_LibffiDataFree(PSI_LibffiData
*data
) {
164 psi_ffi_closure_free(data
->closure
);
169 static inline PSI_LibffiContext
*PSI_LibffiContextInit(PSI_LibffiContext
*L
) {
173 L
= malloc(sizeof(*L
));
175 memset(L
, 0, sizeof(*L
));
177 L
->params
[0] = &ffi_type_pointer
;
178 L
->params
[1] = &ffi_type_pointer
;
179 rc
= ffi_prep_cif(&L
->signature
, FFI_DEFAULT_ABI
, 2, &ffi_type_void
, L
->params
);
180 ZEND_ASSERT(rc
== FFI_OK
);
185 static inline void PSI_LibffiContextDtor(PSI_LibffiContext
*L
) {
188 for (i
= 0; i
< L
->data
.count
; ++i
) {
189 PSI_LibffiDataFree(L
->data
.list
[i
]);
196 static inline void PSI_LibffiContextFree(PSI_LibffiContext
**L
) {
198 PSI_LibffiContextDtor(*L
);
204 static void psi_ffi_handler(ffi_cif
*_sig
, void *_result
, void **_args
, void *_data
)
206 PSI_LibffiData
*data
= _data
;
208 void **arg_prm
= NULL
;
211 if (SUCCESS
!= psi_parse_args(*(zend_execute_data
**)_args
[0], data
->impl
)) {
215 if (data
->impl
->decl
->args
) {
216 arg_prm
= malloc(data
->impl
->decl
->args
->count
* sizeof(*arg_prm
));
218 for (i
= 0; i
< data
->impl
->decl
->args
->count
; ++i
) {
219 decl_arg
*darg
= data
->impl
->decl
->args
->args
[i
];
221 arg_prm
[i
] = psi_do_let(darg
);
225 ffi_call(&data
->signature
, FFI_FN(data
->impl
->decl
->dlptr
), &ret_val
, arg_prm
);
227 psi_do_return(*(zval
**)_args
[1], data
->impl
->stmts
->ret
.list
[0], &ret_val
);
229 for (i
= 0; i
< data
->impl
->stmts
->set
.count
; ++i
) {
230 set_stmt
*set
= data
->impl
->stmts
->set
.list
[i
];
233 psi_do_set(set
->arg
->_zv
, set
->val
);
237 for (i
= 0; i
< data
->impl
->stmts
->fre
.count
; ++i
) {
238 free_stmt
*fre
= data
->impl
->stmts
->fre
.list
[i
];
243 psi_do_clean(data
->impl
);
250 static void psi_ffi_init(PSI_Context
*C
)
252 C
->context
= PSI_LibffiContextInit(NULL
);
255 static void psi_ffi_dtor(PSI_Context
*C
)
257 PSI_LibffiContextFree((void *) &C
->context
);
260 static zend_function_entry
*psi_ffi_compile(PSI_Context
*C
)
263 zend_function_entry
*zfe
;
264 PSI_LibffiContext
*ctx
= C
->context
;
270 zfe
= calloc(C
->impls
->count
+ 1, sizeof(*zfe
));
271 for (i
= 0; i
< C
->impls
->count
; ++i
) {
272 zend_function_entry
*zf
= &zfe
[j
];
273 PSI_LibffiData
*data
;
275 if (!C
->impls
->list
[i
]->decl
) {
279 data
= PSI_LibffiDataAlloc(ctx
, C
->impls
->list
[i
]);
280 zf
->fname
= C
->impls
->list
[i
]->func
->name
+ (C
->impls
->list
[i
]->func
->name
[0] == '\\');
281 zf
->num_args
= C
->impls
->list
[i
]->func
->args
->count
;
282 zf
->handler
= data
->code
;
283 zf
->arg_info
= data
->arginfo
;
290 static PSI_ContextOps ops
= {
296 PSI_ContextOps
*PSI_Libffi(void)