+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
#include "php.h"
+
+#ifdef HAVE_LIBFFI
+
#include "php_psi.h"
#include "libffi.h"
#endif
}
-static void handler(ffi_cif *signature, void *_result, void **_args, void *_data);
+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;
}
-static inline ffi_type *psi_ffi_type(token_t t) {
+static inline ffi_type *psi_ffi_token_type(token_t t) {
switch (t) {
default:
ZEND_ASSERT(0);
/* no break */
case PSI_T_VOID:
return &ffi_type_void;
- case PSI_T_SINT8:
+ case PSI_T_INT8:
return &ffi_type_sint8;
case PSI_T_UINT8:
return &ffi_type_uint8;
- case PSI_T_SINT16:
+ case PSI_T_INT16:
return &ffi_type_sint16;
case PSI_T_UINT16:
return &ffi_type_uint16;
- case PSI_T_SINT32:
+ case PSI_T_INT32:
return &ffi_type_sint32;
case PSI_T_UINT32:
return &ffi_type_uint32;
- case PSI_T_SINT64:
+ case PSI_T_INT64:
return &ffi_type_sint64;
case PSI_T_UINT64:
return &ffi_type_uint64;
case PSI_T_BOOL:
return &ffi_type_uchar;
- case PSI_T_CHAR:
- return &ffi_type_schar;
- case PSI_T_SHORT:
- return &ffi_type_sshort;
case PSI_T_INT:
return &ffi_type_sint;
case PSI_T_LONG:
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_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) {
typedef struct PSI_LibffiContext {
ffi_cif signature;
ffi_type *params[2];
- struct {
- struct PSI_LibffiData **list;
- size_t count;
- } data;
} PSI_LibffiContext;
-typedef struct PSI_LibffiData {
- PSI_LibffiContext *context;
- impl *impl;
- zend_internal_arg_info *arginfo;
+typedef struct PSI_LibffiCall {
void *code;
ffi_closure *closure;
ffi_cif signature;
- ffi_type *params[1];
-} PSI_LibffiData;
+ void *params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
+} PSI_LibffiCall;
-static inline PSI_LibffiData *PSI_LibffiDataAlloc(PSI_LibffiContext *context, impl *impl) {
- ffi_status rc;
- size_t i, c = impl->decl->args ? impl->decl->args->count : 0;
- PSI_LibffiData *data = malloc(sizeof(*data) + c * sizeof(ffi_type *));
+static inline PSI_LibffiCall *PSI_LibffiCallAlloc(PSI_Context *C, decl *decl) {
+ int rc;
+ size_t i, c = decl->args ? decl->args->count : 0;
+ PSI_LibffiCall *call = calloc(1, sizeof(*call) + 2 * c * sizeof(void *));
- data->context = context;
- data->impl = impl;
- data->arginfo = psi_internal_arginfo(impl);
for (i = 0; i < c; ++i) {
- data->params[i] = psi_ffi_decl_arg_type(impl->decl->args->args[i]);
+ call->params[i] = psi_ffi_decl_arg_type(decl->args->args[i]);
}
- data->params[c] = NULL;
-
- rc = ffi_prep_cif(
- &data->signature,
- psi_ffi_abi(data->impl->decl->abi->convention),
- c,
- psi_ffi_decl_arg_type(data->impl->decl->func),
- data->params);
+ 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),
+ c, psi_ffi_decl_arg_type(decl->func), (ffi_type **) call->params);
ZEND_ASSERT(FFI_OK == rc);
- data->closure = psi_ffi_closure_alloc(sizeof(ffi_closure), &data->code);
- ZEND_ASSERT(data->closure != NULL);
+ return call;
+}
+
+static inline void PSI_LibffiCallInitClosure(PSI_Context *C, PSI_LibffiCall *call, impl *impl) {
+ PSI_LibffiContext *context = C->context;
+ int rc;
+
+ call->closure = psi_ffi_closure_alloc(sizeof(ffi_closure), &call->code);
+ ZEND_ASSERT(call->closure != NULL);
+
#if PSI_HAVE_FFI_PREP_CLOSURE_LOC
rc = ffi_prep_closure_loc(
- data->closure,
+ call->closure,
&context->signature,
- handler,
- data,
- data->code);
- ZEND_ASSERT(FFI_OK == rc);
+ psi_ffi_handler,
+ impl,
+ call->code);
+
#elif PSI_HAVE_FFI_PREP_CLOSURE
- rc = ffi_prep_closure(data->code, &context->signature, handler, data);
- ZEND_ASSERT(FFI_OK == rc);
+ rc = ffi_prep_closure(call->code, &context->signature, psi_ffi_handler, impl);
#else
# error "Neither ffi_prep_closure() nor ffi_prep_closure_loc() available"
#endif
-
- context->data.list = realloc(context->data.list, ++context->data.count * sizeof(*context->data.list));
- context->data.list[context->data.count-1] = data;
-
- return data;
+ ZEND_ASSERT(FFI_OK == rc);
}
-static inline void PSI_LibffiDataFree(PSI_LibffiData *data) {
- psi_ffi_closure_free(data->closure);
- free(data->arginfo);
- free(data);
+static inline void PSI_LibffiCallFree(PSI_LibffiCall *call) {
+ if (call->closure) {
+ psi_ffi_closure_free(call->closure);
+ }
+ free(call);
}
static inline PSI_LibffiContext *PSI_LibffiContextInit(PSI_LibffiContext *L) {
return L;
}
-static inline void PSI_LibffiContextDtor(PSI_LibffiContext *L) {
- size_t i;
-
- for (i = 0; i < L->data.count; ++i) {
- PSI_LibffiDataFree(L->data.list[i]);
- }
- if (L->data.list) {
- free(L->data.list);
- }
+static void psi_ffi_handler(ffi_cif *_sig, void *_result, void **_args, void *_data)
+{
+ psi_call(*(zend_execute_data **)_args[0], *(zval **)_args[1], _data);
}
-static inline void PSI_LibffiContextFree(PSI_LibffiContext **L) {
- if (*L) {
- PSI_LibffiContextDtor(*L);
- free(*L);
- *L = NULL;
- }
+static void psi_ffi_init(PSI_Context *C)
+{
+ C->context = PSI_LibffiContextInit(NULL);
}
-static void handler(ffi_cif *_sig, void *_result, void **_args, void *_data)
+static void psi_ffi_dtor(PSI_Context *C)
{
- PSI_LibffiData *data = _data;
- size_t i;
- void **arg_ptr = NULL, **arg_prm = NULL;
- impl_val ret_val;
-
- if (SUCCESS != psi_parse_args(*(zend_execute_data **)_args[0], data->impl)) {
- return;
- }
-
- if (data->impl->decl->args) {
- arg_ptr = malloc(data->impl->decl->args->count * sizeof(*arg_ptr));
- arg_prm = malloc(data->impl->decl->args->count * sizeof(*arg_prm));
-
- for (i = 0; i < data->impl->decl->args->count; ++i) {
- decl_arg *darg = data->impl->decl->args->args[i];
+ if (C->decls) {
+ size_t i;
- arg_ptr[i] = psi_do_let(darg);
- arg_prm[i] = (darg->let->val && darg->let->val->is_reference)
- ? &arg_ptr[i] : arg_ptr[i];
+ for (i = 0; i < C->decls->count; ++i) {
+ decl *decl = C->decls->list[i];
- darg->let->ptr = arg_ptr[i];
+ if (decl->call.info) {
+ PSI_LibffiCallFree(decl->call.info);
+ }
}
}
+ free(C->context);
+}
- ffi_call(&data->signature, FFI_FN(data->impl->decl->dlptr), &ret_val, arg_prm);
+static zend_function_entry *psi_ffi_compile(PSI_Context *C)
+{
+ size_t i, j = 0;
+ zend_function_entry *zfe;
- psi_do_return(data->impl, &ret_val, *(zval **)_args[1]);
+ if (!C->impls) {
+ return NULL;
+ }
- for (i = 0; i < data->impl->stmts->set.count; ++i) {
- set_stmt *set = data->impl->stmts->set.list[i];
+ zfe = calloc(C->impls->count + 1, sizeof(*zfe));
+ for (i = 0; i < C->impls->count; ++i) {
+ zend_function_entry *zf = &zfe[j];
+ PSI_LibffiCall *call;
+ impl *impl = C->impls->list[i];
- if (set->arg->_zv) {
- psi_do_set(set->arg->_zv, set->val->func, set->val->vars);
+ if (!impl->decl) {
+ continue;
}
- }
- for (i = 0; i < data->impl->stmts->fre.count; ++i) {
- free_stmt *fre = data->impl->stmts->fre.list[i];
+ call = PSI_LibffiCallAlloc(C, impl->decl);
+ PSI_LibffiCallInitClosure(C, call, impl);
- psi_do_free(fre);
+ zf->fname = impl->func->name + (impl->func->name[0] == '\\');
+ zf->num_args = impl->func->args->count;
+ zf->handler = call->code;
+ zf->arg_info = psi_internal_arginfo(impl);
+ ++j;
}
- psi_do_clean(data->impl);
+ for (i = 0; i < C->decls->count; ++i) {
+ decl *decl = C->decls->list[i];
- if (arg_ptr) {
- free(arg_ptr);
- }
- if (arg_prm) {
- free(arg_prm);
+ if (decl->impl) {
+ continue;
+ }
+
+ PSI_LibffiCallAlloc(C, decl);
}
-}
-static void init(PSI_Context *C)
-{
- C->context = PSI_LibffiContextInit(NULL);
+ return zfe;
}
-static void dtor(PSI_Context *C)
-{
- PSI_LibffiContextFree((void *) &C->context);
-}
+static void psi_ffi_call(PSI_Context *C, decl_callinfo *decl_call, impl_vararg *va) {
+ PSI_LibffiCall *call = decl_call->info;
-static zend_function_entry *compile(PSI_Context *C, PSI_Data *D)
-{
- size_t i, j = 0;
- zend_function_entry *zfe = calloc(D->impls->count + 1, sizeof(*zfe));
- PSI_LibffiContext *ctx = C->context;
-
- for (i = 0; i < D->impls->count; ++i) {
- zend_function_entry *zf = &zfe[j];
- PSI_LibffiData *data;
+ 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 *));
- if (!D->impls->list[i]->decl) {
- continue;
+ for (i = 0; i < nfixedargs; ++i) {
+ params[i] = call->params[i];
+ params[i + ntotalargs + 1] = call->params[i + nfixedargs + 1];
}
-
- data = PSI_LibffiDataAlloc(ctx, D->impls->list[i]);
- zf->fname = D->impls->list[i]->func->name + (D->impls->list[i]->func->name[0] == '\\');
- zf->num_args = D->impls->list[i]->func->args->count;
- zf->handler = data->code;
- zf->arg_info = data->arginfo;
- ++j;
+ 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);
}
-
- return zfe;
}
static PSI_ContextOps ops = {
- init,
- dtor,
- compile,
+ psi_ffi_init,
+ psi_ffi_dtor,
+ psi_ffi_compile,
+ psi_ffi_call,
};
PSI_ContextOps *PSI_Libffi(void)
{
return &ops;
}
+
+#endif /* HAVE_LIBFFI */
projects / m6w6 / ext-psi / blobdiff