Added basic support for arm64

src/elf/Constants.go

@@ -4,6 +4,7 @@ const (
 	LittleEndian      = 1
 	TypeExecutable    = 2
 	ArchitectureAMD64 = 0x3E
+	ArchitectureARM64 = 0xB7
 )
 
 type ProgramType int32

src/elf/ELF.go

@@ -23,8 +23,16 @@ func Write(writer io.Writer, code []byte, data []byte) {
 	var (
 		codeStart, codePadding = fs.Align(HeaderEnd, config.Align)
 		dataStart, dataPadding = fs.Align(codeStart+len(code), config.Align)
+		arch                   int16
 	)
 
+	switch config.TargetArch {
+	case config.ARM:
+		arch = ArchitectureARM64
+	case config.X86:
+		arch = ArchitectureAMD64
+	}
+
 	elf := &ELF{
 		Header: Header{
 			Magic:                       [4]byte{0x7F, 'E', 'L', 'F'},
@@ -34,7 +42,7 @@ func Write(writer io.Writer, code []byte, data []byte) {
 			OSABI:                       0,
 			ABIVersion:                  0,
 			Type:                        TypeExecutable,
-			Architecture:                ArchitectureAMD64,
+			Architecture:                arch,
 			FileVersion:                 1,
 			EntryPointInMemory:          int64(config.BaseAddress + codeStart),
 			ProgramHeaderOffset:         HeaderSize,