feat(internal): enable link_emu for arm64 (#43)

internal/atm/abi/abi.go

@@ -31,6 +31,10 @@ var (
     ABI = ArchCreateABI()
 )
 
+const (
+    PtrSize  = 8    // pointer size
+)
+
 func alignUp(n uintptr, a int) uintptr {
     return (n + uintptr(a) - 1) &^ (uintptr(a) - 1)
 }

internal/atm/abi/abi_amd64.go

@@ -29,7 +29,6 @@ import (
 )
 
 const (
-    PtrSize  = 8    // pointer size
     PtrAlign = 8    // pointer alignment
 )
 

internal/atm/abi/abi_arm64.go

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2024 ByteDance Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package abi
+
+import (
+	`reflect`
+	`unsafe`
+
+	`github.com/cloudwego/frugal/internal/rt`
+)
+
+// NOTE: this file is temporary and is used only for emu on arm
+// TODO: delete this file after frugal supports arm
+
+type ARM64ABI struct {}
+
+func ArchCreateABI() *ARM64ABI {
+	return &ARM64ABI{}
+}
+
+func (self *ARM64ABI) RegisterMethod(id int, mt rt.Method) int {
+	return mt.Id
+}
+
+func (self *ARM64ABI) RegisterFunction(id int, fn interface{}) (fp unsafe.Pointer) {
+	vv := rt.UnpackEface(fn)
+	vt := vv.Type.Pack()
+
+	/* must be a function */
+	if vt.Kind() != reflect.Func {
+		panic("fn is not a function")
+	}
+
+	return *(*unsafe.Pointer)(vv.Value)
+}

internal/binary/decoder/linker_arm64.go

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2024 ByteDance Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package decoder
+
+import "github.com/cloudwego/frugal/internal/atm/hir"
+
+// NOTE: this file is temporary and is used only for emu on arm
+// TODO: delete this file after frugal supports arm
+
+type (
+	LinkerARM64 struct{}
+)
+
+func init() {
+	SetLinker(new(LinkerARM64))
+}
+
+func (LinkerARM64) Link(p hir.Program) Decoder {
+	return link_emu(p)
+}

internal/binary/decoder/skipping_arm64.go

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2024 ByteDance Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package decoder
+
+import (
+	`unsafe`
+)
+
+// NOTE: this file is temporary and is used only for emu on arm
+// TODO: delete this file after frugal supports arm
+
+func archSkippingFn() unsafe.Pointer {
+	return nil
+}

internal/binary/encoder/linker_arm64.go

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2024 ByteDance Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package encoder
+
+import "github.com/cloudwego/frugal/internal/atm/hir"
+
+// NOTE: this file is temporary and is used only for emu on arm
+// TODO: delete this file after frugal supports arm
+
+type (
+	LinkerARM64 struct{}
+)
+
+func init() {
+	SetLinker(new(LinkerARM64))
+}
+
+func (LinkerARM64) Link(p hir.Program) Encoder {
+	return link_emu(p)
+}