+/*******************************************************************************
+ Copyright (c) 2016, Michael Wallner <mike@php.net>.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#include "php_psi_stdinc.h"
+#include "context.h"
+#include "call.h"
#include "php.h"
-#include "php_psi.h"
-#include "libffi.h"
+
+#ifdef HAVE_LIBFFI
#undef PACKAGE
#undef PACKAGE_BUGREPORT
# endif
#endif
+struct psi_ffi_context {
+ ffi_cif signature;
+ ffi_type *params[2];
+};
+
+struct psi_ffi_impl_info {
+ struct psi_context *context;
+ struct psi_call_frame *frame;
+
+ void *code;
+ ffi_closure *closure;
+};
+
+struct psi_ffi_callback_info {
+ struct psi_ffi_impl_info *impl_info;
+ struct psi_let_exp *let_exp;
+
+ void *code;
+ ffi_closure *closure;
+};
+
+struct psi_ffi_decl_info {
+ ffi_cif signature;
+ ffi_type *rv_array;
+ ffi_type *params[1];
+};
+
static void *psi_ffi_closure_alloc(size_t s, void **code)
{
#ifdef PSI_HAVE_FFI_CLOSURE_ALLOC
}
return *code;
#else
- return NULL;
+# error "Neither ffi_closure_alloc() nor mmap() available"
+#endif
+}
+
+static ffi_status psi_ffi_prep_closure(ffi_closure **closure, void **code, ffi_cif *sig, void (*handler)(ffi_cif*,void*,void**,void*), void *data) {
+ *closure = psi_ffi_closure_alloc(sizeof(ffi_closure), code);
+ assert(*closure != NULL);
+
+#if PSI_HAVE_FFI_PREP_CLOSURE_LOC
+ return ffi_prep_closure_loc(*closure, sig, handler, data, *code);
+
+#elif PSI_HAVE_FFI_PREP_CLOSURE
+ return ffi_prep_closure(*code, sig, handler, data);
+#else
+# error "Neither ffi_prep_closure() nor ffi_prep_closure_loc() is available"
#endif
}
#endif
}
-static void psi_ffi_handler(ffi_cif *signature, void *_result, void **_args, void *_data);
+static void psi_ffi_prep_va(ffi_cif *base, ffi_cif *signature, size_t argc, size_t va_count,
+ ffi_type **param_types) {
+ ffi_status rc;
-static inline ffi_abi psi_ffi_abi(const char *convention) {
- return FFI_DEFAULT_ABI;
+#ifdef PSI_HAVE_FFI_PREP_CIF_VAR
+ rc = ffi_prep_cif_var(signature, base->abi, argc, argc + va_count,
+ base->rtype, param_types);
+#else
+ /* FIXME: test in config.m4; assume we can just call anyway */
+ rc = ffi_prep_cif(signature, base->abi, argc + va_count, base->rtype, param_types);
+#endif
+
+ assert(FFI_OK == rc);
}
-static inline ffi_type *psi_ffi_type(token_t t) {
+
+#if HAVE_INT128
+static ffi_type *ffi_type_sint128;
+static ffi_type *ffi_type_uint128;
+#endif
+
+static inline ffi_type *psi_ffi_decl_arg_type(struct psi_decl_arg *darg);
+
+static inline ffi_type *psi_ffi_token_type(token_t t) {
switch (t) {
default:
- ZEND_ASSERT(0);
+ assert(0);
/* no break */
case PSI_T_VOID:
return &ffi_type_void;
return &ffi_type_sint64;
case PSI_T_UINT64:
return &ffi_type_uint64;
+#if HAVE_INT128
+ case PSI_T_INT128:
+ return ffi_type_sint128;
+ case PSI_T_UINT128:
+ return ffi_type_uint128;
+#endif
case PSI_T_BOOL:
return &ffi_type_uchar;
- case PSI_T_INT:
+ case PSI_T_ENUM:
return &ffi_type_sint;
case PSI_T_FLOAT:
return &ffi_type_float;
case PSI_T_DOUBLE:
return &ffi_type_double;
+#ifdef HAVE_LONG_DOUBLE
+ case PSI_T_LONG_DOUBLE:
+ return &ffi_type_longdouble;
+#endif
+ case PSI_T_POINTER:
+ case PSI_T_FUNCTION:
+ 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_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;
+}
+
+struct psi_ffi_struct_element_storage {
+ ffi_type **els;
+ size_t nels;
+ size_t argc;
+ size_t offset;
+ size_t max_align;
+ size_t last_arg_pos;
+};
+
+static inline void psi_ffi_struct_type_element(
+ struct psi_ffi_struct_element_storage *s, struct psi_decl_arg *darg,
+ ffi_type *darg_type) {
+
+ ffi_type *type, **tmp;
+ size_t padding;
+
+ if (darg->layout->pos == s->last_arg_pos) {
+ /* skip bit fields */
+ return;
+ }
+ s->last_arg_pos = darg->layout->pos;
+
+ type = malloc(sizeof(*type));
+ *type = *darg_type;
+
+ if (type->alignment > s->max_align) {
+ s->max_align = type->alignment;
+ }
+
+ assert(type->size <= darg->layout->len);
+ if ((padding = psi_offset_padding(darg->layout->pos - s->offset, type->alignment))) {
+ if (s->nels + padding + 1 > s->argc) {
+ s->argc += padding;
+ tmp = realloc(s->els, (s->argc + 1) * sizeof(*s->els));
+ if (tmp) {
+ s->els = tmp;
+ } else {
+ free(s->els);
+ abort();
+ }
+ s->els[s->argc] = NULL;
+ }
+ psi_ffi_struct_type_pad(&s->els[s->nels], padding);
+ s->nels += padding;
+ s->offset += padding;
+ }
+ assert(s->offset == darg->layout->pos);
+
+ s->offset = (s->offset + darg->layout->len + type->alignment - 1) & ~(type->alignment - 1);
+ s->els[s->nels++] = type;
+}
+
+static ffi_type **psi_ffi_struct_type_elements(struct psi_decl_struct *strct) {
+ size_t i = 0;
+ ffi_type **tmp;
+ struct psi_decl_arg *darg;
+ struct psi_ffi_struct_element_storage s = {0};
+
+ s.last_arg_pos = -1;
+ s.argc = psi_plist_count(strct->args);
+ s.els = calloc(s.argc + 1, sizeof(*s.els));
+
+ while (psi_plist_get(strct->args, i++, &darg)) {
+ psi_ffi_struct_type_element(&s, darg, psi_ffi_decl_arg_type(darg));
+ }
+
+ /* apply struct alignment padding */
+ s.offset = (s.offset + s.max_align - 1) & ~(s.max_align - 1);
+
+ assert(s.offset <= strct->size);
+ if (s.offset < strct->size) { /* WTF? */
+ size_t padding = strct->size - s.offset;
+
+ tmp = realloc(s.els, (padding + s.argc + 1) * sizeof(*s.els));
+ if (tmp) {
+ s.els = tmp;
+ } else {
+ free(s.els);
+ return NULL;
+ }
+ psi_ffi_struct_type_pad(&s.els[s.nels], padding);
+ s.els[s.argc + padding] = NULL;
+ }
+
+ return s.els;
+}
+
+static inline ffi_type *psi_ffi_decl_type(struct psi_decl_type *type) {
+ struct psi_decl_type *real = psi_decl_type_get_real(type);
+
+ if (real != type && type->real.def->var->pointer_level) {
+ return &ffi_type_pointer;
+ }
+
+ switch (real->type) {
+ case PSI_T_STRUCT:
+ if (!real->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->real.strct);
+
+ real->real.strct->engine.type = strct;
+ real->real.strct->engine.dtor = psi_ffi_type_dtor;
+ }
+
+ return real->real.strct->engine.type;
+
+ case PSI_T_UNION:
+ {
+ struct psi_decl_arg *arg;
+ psi_plist_get(real->real.unn->args, 0, &arg);
+ return psi_ffi_decl_arg_type(arg);
+ }
+
+ default:
+ break;
+ }
+
+ return psi_ffi_token_type(real->type);
+}
+
+static inline ffi_type *psi_ffi_decl_func_array_type(struct psi_decl *fn) {
+ struct psi_ffi_decl_info *info = fn->info;
+ struct psi_ffi_struct_element_storage s = {0};
+ struct psi_layout l;
+ ffi_type *type;
+ size_t i;
+
+ if (info->rv_array) {
+ return info->rv_array;
+ }
+
+ s.last_arg_pos = -1;
+ s.argc = fn->func->var->array_size;
+ s.els = calloc(s.argc + 1, sizeof(*s.els));
+
+ info->rv_array = calloc(1, sizeof(ffi_type));
+ info->rv_array->type = FFI_TYPE_STRUCT;
+ info->rv_array->size = 0;
+ info->rv_array->elements = s.els;
+
+ l.pos = 0;
+ if (fn->func->var->pointer_level > 1) {
+ l.len = SIZEOF_VOID_P;
+ type = &ffi_type_pointer;
+ } else {
+ l.len = psi_decl_type_get_size(fn->func->type, NULL);
+ type = psi_ffi_decl_type(fn->func->type);
}
+
+ assert(!fn->func->layout);
+ fn->func->layout = &l;
+ for (i = 0; i < fn->func->var->array_size; ++i) {
+ psi_ffi_struct_type_element(&s, fn->func, type);
+ info->rv_array->elements = s.els;
+ l.pos += l.len;
+ }
+ fn->func->layout = NULL;
+
+ return info->rv_array;
}
-static inline ffi_type *psi_ffi_decl_type(decl_type *type) {
- return psi_ffi_type(real_decl_type(type)->type);
+
+static inline ffi_type *psi_ffi_decl_arg_type(struct psi_decl_arg *darg) {
+ if (darg->var->pointer_level) {
+ return &ffi_type_pointer;
+ } else {
+ return psi_ffi_decl_type(darg->type);
+ }
}
-static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg) {
+
+static inline ffi_type *psi_ffi_decl_func_type(struct psi_decl *fn) {
+ struct psi_decl_arg *darg = fn->func;
+
if (darg->var->pointer_level) {
+ if (darg->var->array_size) {
+ /* mimic a struct resembling the array return type of fn */
+ return psi_ffi_decl_func_array_type(fn);
+ }
return &ffi_type_pointer;
} else {
return psi_ffi_decl_type(darg->type);
}
}
-typedef struct PSI_LibffiContext {
- ffi_cif signature;
- ffi_type *params[2];
+static inline ffi_abi psi_ffi_abi(const char *convention) {
+ if (FFI_LAST_ABI - 2 != FFI_FIRST_ABI) {
+#ifdef HAVE_FFI_STDCALL
+ if (!strcasecmp(convention, "stdcall")) {
+ return FFI_STDCALL;
+ }
+#endif
+#ifdef HAVE_FFI_FASTCALL
+ if (!strcasecmp(convention, "fastcall")) {
+ return FFI_FASTCALL;
+ }
+#endif
+ }
+ return FFI_DEFAULT_ABI;
+}
+
+static inline struct psi_ffi_decl_info *psi_ffi_decl_init(struct psi_decl *decl) {
+ if (!decl->info) {
+ int rc;
+ size_t i, c = psi_plist_count(decl->args);
+ struct psi_decl_arg *arg;
+ struct psi_ffi_decl_info *info = calloc(1, sizeof(*info) + 2 * c * sizeof(void *));
+
+ decl->info = info;
+
+ for (i = 0; psi_plist_get(decl->args, i, &arg); ++i) {
+ info->params[i] = psi_ffi_decl_arg_type(arg);
+ }
+ info->params[c] = NULL;
+
+ rc = ffi_prep_cif(&info->signature, psi_ffi_abi(decl->abi->convention),
+ c, psi_ffi_decl_func_type(decl), info->params);
+
+ if (FFI_OK != rc) {
+ free(info);
+ decl->info = NULL;
+ }
+ }
+
+ return decl->info;
+}
+
+static inline void psi_ffi_decl_dtor(struct psi_decl *decl) {
+ if (decl->info) {
+ struct psi_ffi_decl_info *info = decl->info;
+
+ if (info->rv_array) {
+ psi_ffi_type_dtor(info->rv_array);
+ }
+ free(decl->info);
+ decl->info = NULL;
+ }
+}
+
+static void psi_ffi_handler(ffi_cif *sig, void *result, void **args, void *data)
+{
+ struct psi_impl *impl = data;
+ struct psi_ffi_impl_info *info = impl->info;
+
+ psi_context_call(info->context, *(zend_execute_data **)args[0], *(zval **)args[1], impl);
+}
+
+static void psi_ffi_callback(ffi_cif *sig, void *result, void **args, void *data)
+{
+ struct psi_ffi_callback_info *cb_info = data;
+ struct psi_call_frame_callback cb_data;
+
+ assert(cb_info->impl_info->frame);
+
+ cb_data.cb = cb_info->let_exp;
+ cb_data.argc = sig->nargs;
+ cb_data.argv = args;
+ cb_data.rval = result;
+
+ psi_call_frame_do_callback(cb_info->impl_info->frame, &cb_data);
+}
+
+static inline void psi_ffi_callback_init(struct psi_ffi_impl_info *impl_info,
+ struct psi_let_exp *let_exp) {
+ struct psi_ffi_callback_info *cb_info;
+ struct psi_ffi_decl_info *decl_info;
+ struct psi_let_callback *cb;
+ struct psi_let_func *fn = NULL;
+ ffi_status rc;
+
+ switch (let_exp->kind) {
+ case PSI_LET_CALLBACK:
+ cb = let_exp->data.callback;
+ if (cb->decl->info) {
+ decl_info = cb->decl->info;
+ } else {
+ decl_info = psi_ffi_decl_init(cb->decl);
+ }
+
+ cb_info = calloc(1, sizeof(*cb_info));
+ cb_info->impl_info = impl_info;
+ cb_info->let_exp = let_exp;
+ rc = psi_ffi_prep_closure(&cb_info->closure, &cb_info->code,
+ &decl_info->signature, psi_ffi_callback, cb_info);
+
+ if (FFI_OK != rc) {
+ free(cb_info);
+ break;
+ }
+ cb->info = cb_info;
+
+ assert(!cb->decl->sym);
+ cb->decl->sym = cb_info->code;
+ fn = cb->func;
+ /* no break */
+
+ case PSI_LET_FUNC:
+ if (!fn) {
+ fn = let_exp->data.func;
+ }
+ if (fn->inner) {
+ size_t i = 0;
+ struct psi_let_exp *inner_let;
+
+ while (psi_plist_get(fn->inner, i++, &inner_let)) {
+ psi_ffi_callback_init(impl_info, inner_let);
+ }
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static inline void psi_ffi_callback_dtor(struct psi_let_exp *let_exp) {
+ struct psi_let_callback *cb;
+ struct psi_let_func *fn = NULL;
+
+ switch (let_exp->kind) {
+ case PSI_LET_CALLBACK:
+ cb = let_exp->data.callback;
+
+ psi_ffi_decl_dtor(cb->decl);
+
+ if (cb->info) {
+ struct psi_ffi_callback_info *info = cb->info;
+
+ if (info->closure) {
+ psi_ffi_closure_free(info->closure);
+ }
+ free(info);
+ cb->info = NULL;
+ }
+ fn = cb->func;
+ /* no break */
+ case PSI_LET_FUNC:
+ if (!fn) {
+ fn = let_exp->data.func;
+ }
+
+ if (fn->inner) {
+ size_t i = 0;
+ struct psi_let_exp *cb;
+
+ while (psi_plist_get(fn->inner, i++, &cb)) {
+ psi_ffi_callback_dtor(cb);
+ }
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static inline struct psi_ffi_impl_info *psi_ffi_impl_init(struct psi_impl *impl,
+ struct psi_context *C) {
+ struct psi_ffi_context *context = C->context;
+ struct psi_ffi_impl_info *info = calloc(1, sizeof(*info));
+ struct psi_let_stmt *let;
+ ffi_status rc;
+ size_t l = 0;
+
+ info->context = C;
+
+ rc = psi_ffi_prep_closure(&info->closure, &info->code,
+ &context->signature, psi_ffi_handler, impl);
+
+ if (FFI_OK != rc) {
+ free(info);
+ return NULL;
+ }
+
+ while (psi_plist_get(impl->stmts.let, l++, &let)) {
+ psi_ffi_callback_init(info, let->exp);
+ }
+
+ return impl->info = info;
+}
+
+static inline void psi_ffi_impl_dtor(struct psi_impl *impl) {
+ struct psi_ffi_impl_info *info = impl->info;
+ struct psi_let_stmt *let;
+ size_t j = 0;
+
+ while (psi_plist_get(impl->stmts.let, j++, &let)) {
+ psi_ffi_callback_dtor(let->exp);
+ }
+
+ if (info) {
+ if (info->closure) {
+ psi_ffi_closure_free(info->closure);
+ }
+ free(info);
+ impl->info = NULL;
+ }
+}
+
+static void psi_ffi_extvar_get(ffi_cif *sig, void *result, void **args, void *data) {
+ struct psi_decl_extvar *evar = data;
+
+ psi_decl_extvar_get(evar, result);
+}
+
+static void psi_ffi_extvar_set(ffi_cif *sig, void *result, void **args, void *data) {
+ struct psi_decl_extvar *evar = data;
+
+ psi_decl_extvar_set(evar, args[0]);
+}
+
+struct psi_ffi_extvar_info {
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;
- void *code;
- ffi_closure *closure;
- ffi_cif signature;
- ffi_type *params[1];
-} PSI_LibffiData;
+ ffi_cif signature;
+ void *code;
+ ffi_closure *closure;
+ } get;
+ struct {
+ ffi_cif signature;
+ ffi_type *params[1];
+ void *code;
+ ffi_closure *closure;
+ } set;
+};
-static inline PSI_LibffiData *PSI_LibffiDataAlloc(PSI_LibffiContext *context, impl *impl) {
+static inline ffi_status psi_ffi_extvar_init(struct psi_decl_extvar *evar) {
+ struct psi_ffi_extvar_info *info = calloc(1, sizeof(*info));
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 *));
-
- 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]);
- }
- 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);
- ZEND_ASSERT(FFI_OK == rc);
-
- data->closure = psi_ffi_closure_alloc(sizeof(ffi_closure), &data->code);
- ZEND_ASSERT(data->closure != NULL);
-#if PSI_HAVE_FFI_PREP_CLOSURE_LOC
- rc = ffi_prep_closure_loc(
- data->closure,
- &context->signature,
- psi_ffi_handler,
- data,
- data->code);
- ZEND_ASSERT(FFI_OK == rc);
-#elif PSI_HAVE_FFI_PREP_CLOSURE
- rc = ffi_prep_closure(data->code, &context->signature, psi_ffi_handler, data);
- ZEND_ASSERT(FFI_OK == rc);
-#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;
+ evar->info = info;
+
+ psi_ffi_decl_init(evar->getter);
+ psi_ffi_decl_init(evar->setter);
+
+ rc = ffi_prep_cif(&info->get.signature, FFI_DEFAULT_ABI, 0,
+ psi_ffi_decl_func_type(evar->getter), NULL);
+ if (FFI_OK != rc) {
+ return rc;
+ }
+ rc = psi_ffi_prep_closure(&info->get.closure, &info->get.code,
+ &info->get.signature, psi_ffi_extvar_get, evar);
+ if (FFI_OK != rc) {
+ return rc;
+ }
+
+ info->set.params[0] = psi_ffi_decl_arg_type(evar->arg);
+ rc = ffi_prep_cif(&info->set.signature, FFI_DEFAULT_ABI, 1,
+ &ffi_type_void, info->set.params);
+ if (FFI_OK != rc) {
+ return rc;
+ }
+ rc = psi_ffi_prep_closure(&info->set.closure, &info->set.code,
+ &info->set.signature, psi_ffi_extvar_set, evar);
+ if (FFI_OK != rc) {
+ return rc;
+ }
+
+ evar->getter->sym = info->get.code;
+ evar->setter->sym = info->set.code;
- return data;
+ return FFI_OK;
}
-static inline void PSI_LibffiDataFree(PSI_LibffiData *data) {
- psi_ffi_closure_free(data->closure);
- free(data->arginfo);
- free(data);
+static inline void psi_ffi_extvar_dtor(struct psi_decl_extvar *evar) {
+ if (evar->info) {
+ free(evar->info);
+ evar->info = NULL;
+ }
}
-static inline PSI_LibffiContext *PSI_LibffiContextInit(PSI_LibffiContext *L) {
+static inline struct psi_ffi_context *psi_ffi_context_init(struct psi_ffi_context *L) {
ffi_status rc;
if (!L) {
L->params[0] = &ffi_type_pointer;
L->params[1] = &ffi_type_pointer;
rc = ffi_prep_cif(&L->signature, FFI_DEFAULT_ABI, 2, &ffi_type_void, L->params);
- ZEND_ASSERT(rc == FFI_OK);
+ assert(rc == FFI_OK);
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 inline void PSI_LibffiContextFree(PSI_LibffiContext **L) {
+static inline void psi_ffi_context_free(struct psi_ffi_context **L) {
if (*L) {
- PSI_LibffiContextDtor(*L);
free(*L);
*L = NULL;
}
}
-static void psi_ffi_handler(ffi_cif *_sig, void *_result, void **_args, void *_data)
+static void psi_ffi_init(struct psi_context *C)
{
- PSI_LibffiData *data = _data;
- size_t i;
- void **arg_prm = NULL;
- impl_val ret_val;
+ C->context = psi_ffi_context_init(NULL);
+}
- if (SUCCESS != psi_parse_args(*(zend_execute_data **)_args[0], data->impl)) {
- return;
- }
+static void psi_ffi_dtor(struct psi_context *C)
+{
+ if (C->decls) {
+ size_t i = 0;
+ struct psi_decl *decl;
- if (data->impl->decl->args) {
- arg_prm = malloc(data->impl->decl->args->count * sizeof(*arg_prm));
+ while (psi_plist_get(C->decls, i++, &decl)) {
+ psi_ffi_decl_dtor(decl);
+ }
- for (i = 0; i < data->impl->decl->args->count; ++i) {
- decl_arg *darg = data->impl->decl->args->args[i];
+ }
+ if (C->vars) {
+ size_t i = 0;
+ struct psi_decl_extvar *evar;
- arg_prm[i] = psi_do_let(darg);
+ while (psi_plist_get(C->vars, i++, &evar)) {
+ psi_ffi_extvar_dtor(evar);
}
}
+ if (C->impls) {
+ size_t i = 0;
+ struct psi_impl *impl;
- ffi_call(&data->signature, FFI_FN(data->impl->decl->dlptr), &ret_val, arg_prm);
-
- psi_do_return(*(zval **)_args[1], data->impl->stmts->ret.list[0], &ret_val);
+ while (psi_plist_get(C->impls, i++, &impl)) {
+ psi_ffi_impl_dtor(impl);
+ }
+ }
+ psi_ffi_context_free((void *) &C->context);
+}
- for (i = 0; i < data->impl->stmts->set.count; ++i) {
- set_stmt *set = data->impl->stmts->set.list[i];
- if (set->arg->_zv) {
- psi_do_set(set->arg->_zv, set->val);
+static zend_function_entry *psi_ffi_compile(struct psi_context *C)
+{
+ size_t i = 0, d = 0, v = 0, nf = 0;
+ struct psi_impl *impl;
+ struct psi_decl *decl;
+ struct psi_decl_extvar *evar;
+ zend_function_entry *zfe = NULL;
+
+ while (psi_plist_get(C->vars, v++, &evar)) {
+ if (FFI_OK == psi_ffi_extvar_init(evar)) {
+ /* */
}
}
- for (i = 0; i < data->impl->stmts->fre.count; ++i) {
- free_stmt *fre = data->impl->stmts->fre.list[i];
-
- psi_do_free(fre);
+ if (C->impls) {
+ zfe = calloc(psi_plist_count(C->impls) + 1, sizeof(*zfe));
+
+ while (psi_plist_get(C->impls, i++, &impl)) {
+ zend_function_entry *zf = &zfe[nf];
+
+ if (!impl->decl) {
+ continue;
+ }
+ if (!psi_ffi_decl_init(impl->decl)) {
+ continue;
+ }
+ if (!psi_ffi_impl_init(impl, C)) {
+ continue;
+ }
+
+ zf->fname = impl->func->name + (impl->func->name[0] == '\\');
+ zf->handler = ((struct psi_ffi_impl_info *) impl->info)->code;
+ zf->num_args = psi_plist_count(impl->func->args);
+ zf->arg_info = psi_internal_arginfo(impl);
+ ++nf;
+ }
}
- psi_do_clean(data->impl);
+ while (psi_plist_get(C->decls, d++, &decl)) {
+ if (decl->info) {
+ continue;
+ }
- if (arg_prm) {
- free(arg_prm);
+ psi_ffi_decl_init(decl);
}
-}
-static void psi_ffi_init(PSI_Context *C)
-{
- C->context = PSI_LibffiContextInit(NULL);
+ return zfe;
}
-static void psi_ffi_dtor(PSI_Context *C)
-{
- PSI_LibffiContextFree((void *) &C->context);
+static inline void psi_ffi_call_ex(struct psi_call_frame *frame) {
+ struct psi_decl *decl = psi_call_frame_get_decl(frame);
+ struct psi_impl *impl = psi_call_frame_get_impl(frame);
+ struct psi_ffi_decl_info *decl_info = decl->info;
+ struct psi_ffi_impl_info *impl_info;
+ struct psi_call_frame *prev;
+
+ if (impl) {
+ impl_info = impl->info;
+ prev = impl_info->frame;
+ impl_info->frame = frame;
+ }
+ ffi_call(&decl_info->signature, FFI_FN(decl->sym),
+ psi_call_frame_get_rpointer(frame),
+ psi_call_frame_get_arg_pointers(frame));
+ if (impl) {
+ impl_info->frame = prev;
+ }
}
-static zend_function_entry *psi_ffi_compile(PSI_Context *C)
-{
- size_t i, j = 0;
- zend_function_entry *zfe;
- PSI_LibffiContext *ctx = C->context;
+static inline void psi_ffi_call_va(struct psi_call_frame *frame) {
+ ffi_cif signature;
+ struct psi_call_frame *prev;
+ struct psi_decl *decl = psi_call_frame_get_decl(frame);
+ struct psi_impl *impl = psi_call_frame_get_impl(frame);
+ struct psi_ffi_decl_info *decl_info = decl->info;
+ struct psi_ffi_impl_info *impl_info;
+ size_t i, va_count, argc;
+ ffi_type **param_types;
+
+ argc = psi_plist_count(decl->args);
+ va_count = psi_call_frame_num_var_args(frame);
+ param_types = ecalloc(argc + va_count + 1, sizeof(ffi_type *));
+ memcpy(param_types, decl_info->params, argc * sizeof(ffi_type *));
+ for (i = 0; i < va_count; ++i) {
+ struct psi_call_frame_argument *frame_arg;
+
+ frame_arg = psi_call_frame_get_var_argument(frame, i);
+ param_types[argc + i] = psi_ffi_impl_type(frame_arg->va_type);
+ }
- if (!C->impls) {
- return NULL;
+ psi_ffi_prep_va(&decl_info->signature, &signature, argc, va_count, param_types);
+
+ if (impl) {
+ impl_info = impl->info;
+ prev = impl_info->frame;
+ impl_info->frame = frame;
+ }
+ ffi_call(&signature, FFI_FN(decl->sym),
+ psi_call_frame_get_rpointer(frame),
+ psi_call_frame_get_arg_pointers(frame));
+ if (impl) {
+ impl_info->frame = prev;
}
- zfe = calloc(C->impls->count + 1, sizeof(*zfe));
- for (i = 0; i < C->impls->count; ++i) {
- zend_function_entry *zf = &zfe[j];
- PSI_LibffiData *data;
+ efree(param_types);
+}
- if (!C->impls->list[i]->decl) {
- continue;
- }
+static void psi_ffi_call(struct psi_call_frame *frame) {
+ if (psi_call_frame_num_var_args(frame)) {
+ psi_ffi_call_va(frame);
+ } else {
+ psi_ffi_call_ex(frame);
+ }
+}
- data = PSI_LibffiDataAlloc(ctx, C->impls->list[i]);
- zf->fname = C->impls->list[i]->func->name + (C->impls->list[i]->func->name[0] == '\\');
- zf->num_args = C->impls->list[i]->func->args->count;
- zf->handler = data->code;
- zf->arg_info = data->arginfo;
- ++j;
+static void *psi_ffi_query(struct psi_context *C, enum psi_context_query q, void *arg) {
+ switch (q) {
+ case PSI_CONTEXT_QUERY_SELF:
+ return "ffi";
+ case PSI_CONTEXT_QUERY_TYPE:
+ return psi_ffi_impl_type(*(token_t *) arg);
}
+ return NULL;
+}
- return zfe;
+static ZEND_RESULT_CODE psi_ffi_load()
+{
+#if HAVE_INT128
+ ffi_type *i128, *u128;
+
+ i128 = calloc(1, 3*sizeof(ffi_type));
+ i128->type = FFI_TYPE_STRUCT;
+ i128->size = 0;
+ i128->elements = (ffi_type **) (i128 + 1);
+ i128->elements[0] = &ffi_type_sint64;
+ i128->elements[1] = &ffi_type_sint64;
+
+ ffi_type_sint128 = i128;
+
+ u128 = calloc(1, 3*sizeof(ffi_type));
+ u128->type = FFI_TYPE_STRUCT;
+ u128->size = 0;
+ u128->elements = (ffi_type **) (u128 + 1);
+ u128->elements[0] = &ffi_type_uint64;
+ u128->elements[1] = &ffi_type_uint64;
+
+ ffi_type_uint128 = u128;
+#endif
+ return SUCCESS;
}
-static PSI_ContextOps ops = {
+static void psi_ffi_free()
+{
+#if HAVE_INT128
+ free(ffi_type_sint128);
+ free(ffi_type_uint128);
+#endif
+}
+
+static struct psi_context_ops ops = {
+ psi_ffi_load,
+ psi_ffi_free,
psi_ffi_init,
psi_ffi_dtor,
psi_ffi_compile,
+ psi_ffi_call,
+ psi_ffi_query,
};
-PSI_ContextOps *PSI_Libffi(void)
+struct psi_context_ops *psi_libffi_ops(void)
{
return &ops;
}
+
+#endif /* HAVE_LIBFFI */
projects / m6w6 / ext-psi / blobdiff