}
static void psi_ffi_handler(ffi_cif *signature, void *_result, void **_args, void *_data);
+static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg);
static inline ffi_abi psi_ffi_abi(const char *convention) {
return FFI_DEFAULT_ABI;
return &ffi_type_uchar;
case PSI_T_INT:
return &ffi_type_sint;
+ case PSI_T_LONG:
+ return &ffi_type_slong;
case PSI_T_FLOAT:
return &ffi_type_float;
case PSI_T_DOUBLE:
return &ffi_type_double;
+ case PSI_T_POINTER:
+ return &ffi_type_pointer;
+ }
+}
+static inline ffi_type *psi_ffi_impl_type(token_t impl_type) {
+ switch (impl_type) {
+ case PSI_T_BOOL:
+ return &ffi_type_sint8;
+ case PSI_T_INT:
+ return &ffi_type_sint64;
+ case PSI_T_STRING:
+ return &ffi_type_pointer;
+ case PSI_T_FLOAT:
+ case PSI_T_DOUBLE:
+ return &ffi_type_double;
+ EMPTY_SWITCH_DEFAULT_CASE();
+ }
+ return NULL;
+}
+static void psi_ffi_struct_type_dtor(void *type) {
+ ffi_type *strct = type;
+
+ if (strct->elements) {
+ ffi_type **ptr;
+
+ for (ptr = strct->elements; *ptr; ++ptr) {
+ free(*ptr);
+ }
+ free(strct->elements);
+ }
+ free(strct);
+}
+
+static size_t psi_ffi_struct_type_pad(ffi_type **els, size_t padding) {
+ size_t i;
+
+ for (i = 0; i < padding; ++i) {
+ ffi_type *pad = malloc(sizeof(*pad));
+
+ memcpy(pad, &ffi_type_schar, sizeof(*pad));
+ *els++ = pad;
+ }
+
+ return padding;
+}
+
+static ffi_type **psi_ffi_struct_type_elements(decl_struct *strct) {
+ size_t i, argc = strct->args->count, nels = 0, offset = 0, maxalign = 0;
+ ffi_type **els = calloc(argc + 1, sizeof(*els));
+
+ for (i = 0; i < strct->args->count; ++i) {
+ decl_arg *darg = strct->args->args[i];
+ ffi_type *type = malloc(sizeof(*type));
+ size_t padding;
+
+ memcpy(type, psi_ffi_decl_arg_type(darg), sizeof(*type));
+
+ ZEND_ASSERT(type->size == darg->layout->len);
+
+ if (type->alignment > maxalign) {
+ maxalign = type->alignment;
+ }
+
+ if ((padding = psi_offset_padding(darg->layout->pos - offset, type->alignment))) {
+ if (nels + padding + 1 > argc) {
+ argc += padding;
+ els = realloc(els, (argc + 1) * sizeof(*els));
+ els[argc] = NULL;
+ }
+ psi_ffi_struct_type_pad(&els[nels], padding);
+ nels += padding;
+ offset += padding;
+ }
+ ZEND_ASSERT(offset == darg->layout->pos);
+
+ offset = (offset + darg->layout->len + type->alignment - 1) & ~(type->alignment - 1);
+ els[nels++] = type;
+ }
+
+ /* apply struct alignment padding */
+ offset = (offset + maxalign - 1) & ~(maxalign - 1);
+
+ ZEND_ASSERT(offset <= strct->size);
+ if (offset < strct->size) {
+ psi_ffi_struct_type_pad(&els[nels], strct->size - offset);
}
+
+ return els;
}
static inline ffi_type *psi_ffi_decl_type(decl_type *type) {
- return psi_ffi_token_type(real_decl_type(type)->type);
+ decl_type *real = real_decl_type(type);
+
+ if (real->type == PSI_T_STRUCT) {
+ if (!real->strct->engine.type) {
+ ffi_type *strct = calloc(1, sizeof(ffi_type));
+
+ strct->type = FFI_TYPE_STRUCT;
+ strct->size = 0;
+ strct->elements = psi_ffi_struct_type_elements(real->strct);
+
+ real->strct->engine.type = strct;
+ real->strct->engine.dtor = psi_ffi_struct_type_dtor;
+ }
+
+ return real->strct->engine.type;
+ }
+ return psi_ffi_token_type(real->type);
}
static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg) {
if (darg->var->pointer_level) {
call->params[c] = NULL;
decl->call.info = call;
+ decl->call.rval = &decl->func->ptr;
+ decl->call.argc = c;
decl->call.args = (void **) &call->params[c+1];
rc = ffi_prep_cif(&call->signature, psi_ffi_abi(decl->abi->convention),
return zfe;
}
-static void psi_ffi_call(PSI_Context *C, impl_val *ret_val, decl *decl) {
- PSI_LibffiCall *call = decl->call.info;
+static void psi_ffi_call(PSI_Context *C, decl_callinfo *decl_call, impl_vararg *va) {
+ PSI_LibffiCall *call = decl_call->info;
+
+ if (va) {
+ ffi_status rc;
+ ffi_cif signature;
+ size_t i, nfixedargs = decl_call->argc, ntotalargs = nfixedargs + va->args->count;
+ void **params = calloc(2 * ntotalargs + 2, sizeof(void *));
- ffi_call(&call->signature, FFI_FN(decl->call.sym), ret_val, decl->call.args);
+ for (i = 0; i < nfixedargs; ++i) {
+ params[i] = call->params[i];
+ params[i + ntotalargs + 1] = call->params[i + nfixedargs + 1];
+ }
+ for (i = 0; i < va->args->count; ++i) {
+ params[nfixedargs + i] = psi_ffi_impl_type(va->types[i]);
+ params[nfixedargs + i + ntotalargs + 1] = &va->values[i];
+ }
+#ifdef PSI_HAVE_FFI_PREP_CIF_VAR
+ rc = ffi_prep_cif_var(&signature, call->signature.abi,
+ nfixedargs, ntotalargs,
+ call->signature.rtype, (ffi_type **) params);
+#else
+ /* FIXME: test in config.m4; assume we can just call anyway */
+ rc = ffi_prep_cif(&signature, call->signature.abi, ntotalargs,
+ call->signature.rtype, (ffi_type **) params);
+#endif
+ ZEND_ASSERT(FFI_OK == rc);
+ ffi_call(&signature, FFI_FN(decl_call->sym), *decl_call->rval, ¶ms[ntotalargs + 1]);
+ free(params);
+ } else {
+ ffi_call(&call->signature, FFI_FN(decl_call->sym), *decl_call->rval, decl_call->args);
+ }
}
static PSI_ContextOps ops = {
projects / m6w6 / ext-psi / blobdiff