#include "php_psi.h"
#include "libffi.h"
+#include "engine.h"
#undef PACKAGE
#undef PACKAGE_BUGREPORT
}
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);
+ ZEND_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
+
+}
+
static void psi_ffi_closure_free(void *c)
{
#ifdef PSI_HAVE_FFI_CLOSURE_ALLOC
#endif
}
-static void psi_ffi_handler(ffi_cif *signature, void *_result, void **_args, void *_data);
+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 void psi_ffi_callback(ffi_cif *_sig, void *_result, void **_args, void *_data)
+{
+ unsigned argc = _sig->nargs;
+ void **argv = _args;
+ ffi_arg *res = _result;
+ let_stmt *let;
+ decl_arg *darg = let->var->arg;
+ decl *decl_cb = darg->type->func;
+ let_callback *cb = let->val->data.callback;
+ impl_arg *iarg = cb->func->arg;
+ size_t i, argc = cb->args->count;
+ zval return_value, *argv = calloc(argc, sizeof(*argv));
+
+ // prepare args for the userland call
+ for (i = 0; i < decl_cb->args->count; ++i) {
+
+ }
+ for (i = 0; i < cb->args->count; ++i) {
+ psi_do_set(&argv[i], cb->args->vals[i]);
+ }
+ zend_fcall_info_argp(iarg->val.zend.cb->fci, argc, argv);
+ zend_fcall_info_call(&iarg->val.zend.cb->fci, &iarg->val.zend.cb->fcc,
+ &return_value, NULL);
+ // marshal return value of the userland call
+ switch (cb->func->type) {
+ case PSI_T_BOOLVAL:
+ break;
+ case PSI_T_INTVAL:
+ break;
+ case PSI_T_FLOATVAL:
+ break;
+ case PSI_T_PATHVAL:
+ case PSI_T_STRVAL:
+ break;
+ case PSI_T_STRLEN:
+ break;
+ case PSI_T_ARRVAL:
+ break;
+ case PSI_T_OBJVAL:
+ break;
+ case PSI_T_CALLBACK:
+ break;
+ EMPTY_SWITCH_DEFAULT_CASE();
+ }
+ darg->ptr = psi_let_val(cb->func->type, iarg, darg->ptr, real_decl_type(darg->type)->strct, &darg->mem);
+}
+
+static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg);
+
+typedef struct PSI_LibffiContext {
+ ffi_cif signature;
+ ffi_type *params[2];
+} PSI_LibffiContext;
+
+typedef struct PSI_LibffiCall {
+ void *code;
+ ffi_closure *closure;
+ ffi_cif signature;
+ void *params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
+} PSI_LibffiCall;
static inline ffi_abi psi_ffi_abi(const char *convention) {
return FFI_DEFAULT_ABI;
}
+
+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 *));
+
+ for (i = 0; i < c; ++i) {
+ call->params[i] = psi_ffi_decl_arg_type(decl->args->args[i]);
+ }
+ 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);
+
+ return call;
+}
+
+static inline void PSI_LibffiCallInitClosure(PSI_Context *C, PSI_LibffiCall *call, impl *impl) {
+ PSI_LibffiContext *context = C->context;
+ ffi_status rc;
+
+ rc = psi_ffi_prep_closure(&call->closure, &call->code, &context->signature, psi_ffi_handler, impl);
+ ZEND_ASSERT(FFI_OK == rc);
+}
+
+static inline void PSI_LibffiCallFree(PSI_LibffiCall *call) {
+ if (call->closure) {
+ psi_ffi_closure_free(call->closure);
+ }
+ free(call);
+}
+
static inline ffi_type *psi_ffi_token_type(token_t t) {
switch (t) {
default:
case PSI_T_BOOL:
return &ffi_type_uchar;
case PSI_T_INT:
+ case PSI_T_ENUM:
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;
+#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_decl_type(decl_type *type) {
- return psi_ffi_token_type(real_decl_type(type)->type);
-}
-static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg) {
- if (darg->var->pointer_level) {
+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;
- } else {
- return psi_ffi_decl_type(darg->type);
+ 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;
-typedef struct PSI_LibffiContext {
- ffi_cif signature;
- ffi_type *params[2];
-} PSI_LibffiContext;
+ if (strct->elements) {
+ ffi_type **ptr;
-typedef struct PSI_LibffiCall {
- void *code;
- ffi_closure *closure;
- ffi_cif signature;
- void *params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
-} PSI_LibffiCall;
+ for (ptr = strct->elements; *ptr; ++ptr) {
+ free(*ptr);
+ }
+ free(strct->elements);
+ }
+ free(strct);
+}
-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 *));
+static size_t psi_ffi_struct_type_pad(ffi_type **els, size_t padding) {
+ size_t i;
- for (i = 0; i < c; ++i) {
- call->params[i] = psi_ffi_decl_arg_type(decl->args->args[i]);
+ for (i = 0; i < padding; ++i) {
+ ffi_type *pad = malloc(sizeof(*pad));
+
+ memcpy(pad, &ffi_type_schar, sizeof(*pad));
+ *els++ = pad;
}
- call->params[c] = NULL;
- decl->call.info = call;
- decl->call.args = (void **) &call->params[c+1];
+ return padding;
+}
- 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);
+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));
- return call;
-}
+ for (i = 0; i < strct->args->count; ++i) {
+ decl_arg *darg = strct->args->args[i];
+ ffi_type *type = malloc(sizeof(*type));
+ size_t padding;
-static inline void PSI_LibffiCallInitClosure(PSI_Context *C, PSI_LibffiCall *call, impl *impl) {
- PSI_LibffiContext *context = C->context;
- int rc;
+ memcpy(type, psi_ffi_decl_arg_type(darg), sizeof(*type));
- call->closure = psi_ffi_closure_alloc(sizeof(ffi_closure), &call->code);
- ZEND_ASSERT(call->closure != NULL);
+ ZEND_ASSERT(type->size == darg->layout->len);
-#if PSI_HAVE_FFI_PREP_CLOSURE_LOC
- rc = ffi_prep_closure_loc(
- call->closure,
- &context->signature,
- psi_ffi_handler,
- impl,
- call->code);
+ if (type->alignment > maxalign) {
+ maxalign = type->alignment;
+ }
-#elif PSI_HAVE_FFI_PREP_CLOSURE
- rc = ffi_prep_closure(data->code, &context->signature, psi_ffi_handler, data);
-#else
-# error "Neither ffi_prep_closure() nor ffi_prep_closure_loc() available"
-#endif
- ZEND_ASSERT(FFI_OK == rc);
+ 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) {
+ decl_type *real = real_decl_type(type);
+
+ switch (real->type) {
+ case PSI_T_FUNCTION:
+ if (!real->func->call.sym) {
+ PSI_LibffiCall *call = PSI_LibffiCallAlloc(&PSI_G(context), real->func);
+ ffi_status rc;
+
+ rc = psi_ffi_prep_closure(
+ (void *) &real->func->call.closure.data,
+ &real->func->call.sym, &call->signature, psi_ffi_handler, NULL);
+ if (FFI_OK == rc) {
+ real->func->call.info = call;
+ real->func->call.closure.dtor = psi_ffi_closure_free;
+ }
+ }
+ return &ffi_type_pointer;
-static inline void PSI_LibffiCallFree(PSI_LibffiCall *call) {
- if (call->closure) {
- psi_ffi_closure_free(call->closure);
+ case 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;
+
+ case PSI_T_UNION:
+ return psi_ffi_decl_arg_type(real->unn->args->args[0]);
+
+ default:
+ return psi_ffi_token_type(real->type);
}
- free(call);
}
+static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg) {
+ if (darg->var->pointer_level) {
+ return &ffi_type_pointer;
+ } else {
+ return psi_ffi_decl_type(darg->type);
+ }
+}
+
static inline PSI_LibffiContext *PSI_LibffiContextInit(PSI_LibffiContext *L) {
ffi_status rc;
return L;
}
-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 void psi_ffi_init(PSI_Context *C)
{
C->context = PSI_LibffiContextInit(NULL);
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;
- ffi_call(&call->signature, FFI_FN(decl->call.sym), ret_val, decl->call.args);
+ 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 *));
+
+ 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