X-Git-Url: https://git.m6w6.name/?p=m6w6%2Fext-psi;a=blobdiff_plain;f=src%2Flibffi.c;h=ac018a119640d8ea0deed03ba479cf1e6c18a260;hp=ee077af19b4b2af2cbba62b6c41dc2961355eaa8;hb=b0a8b273be0744ed445fbe6c935a04ee7a749f14;hpb=6f10fb5abd8d46fbfa5b447983f6101fc170585c

diff --git a/src/libffi.c b/src/libffi.c
index ee077af..ac018a1 100644
--- a/src/libffi.c
+++ b/src/libffi.c
@@ -91,10 +91,63 @@ static inline ffi_type *psi_ffi_token_type(token_t t) {
 		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();
+	}
+}
+static void psi_ffi_struct_type_dtor(void *type) {
+	ffi_type *strct = type;
+
+	if (strct->elements) {
+		free(strct->elements);
 	}
+	free(strct);
+}
+static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg);
+static ffi_type **psi_ffi_struct_type_elements(decl_struct *strct) {
+	ffi_type **els = calloc(strct->args->count + 1, sizeof(*els));
+	size_t i;
+
+	for (i = 0; i < strct->args->count; ++i) {
+		els[i] = psi_ffi_decl_arg_type(strct->args->args[i]);
+	}
+	els[i] = NULL;
+
+	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 = real->strct->size;
+			strct->alignment = 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) {
@@ -127,6 +180,8 @@ static inline PSI_LibffiCall *PSI_LibffiCallAlloc(PSI_Context *C, decl *decl) {
 	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),
@@ -250,10 +305,38 @@ static zend_function_entry *psi_ffi_compile(PSI_Context *C)
 	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, &params[ntotalargs + 1]);
+		free(params);
+	} else {
+		ffi_call(&call->signature, FFI_FN(decl_call->sym), decl_call->rval, decl_call->args);
+	}
 }
 
 static PSI_ContextOps ops = {