Adding upstream version 1.16.10.upstream/1.16.10upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 187 insertions, 0 deletions

diff --git a/src/cmd/internal/sys/arch.go b/src/cmd/internal/sys/arch.go
new file mode 100644
index 0000000..e868736
--- /dev/null
+++ b/src/cmd/internal/sys/arch.go
@@ -0,0 +1,187 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sys
+
+import "encoding/binary"
+
+// ArchFamily represents a family of one or more related architectures.
+// For example, ppc64 and ppc64le are both members of the PPC64 family.
+type ArchFamily byte
+
+const (
+	NoArch ArchFamily = iota
+	AMD64
+	ARM
+	ARM64
+	I386
+	MIPS
+	MIPS64
+	PPC64
+	RISCV64
+	S390X
+	Wasm
+)
+
+// Arch represents an individual architecture.
+type Arch struct {
+	Name   string
+	Family ArchFamily
+
+	ByteOrder binary.ByteOrder
+
+	// PtrSize is the size in bytes of pointers and the
+	// predeclared "int", "uint", and "uintptr" types.
+	PtrSize int
+
+	// RegSize is the size in bytes of general purpose registers.
+	RegSize int
+
+	// MinLC is the minimum length of an instruction code.
+	MinLC int
+}
+
+// InFamily reports whether a is a member of any of the specified
+// architecture families.
+func (a *Arch) InFamily(xs ...ArchFamily) bool {
+	for _, x := range xs {
+		if a.Family == x {
+			return true
+		}
+	}
+	return false
+}
+
+var Arch386 = &Arch{
+	Name:      "386",
+	Family:    I386,
+	ByteOrder: binary.LittleEndian,
+	PtrSize:   4,
+	RegSize:   4,
+	MinLC:     1,
+}
+
+var ArchAMD64 = &Arch{
+	Name:      "amd64",
+	Family:    AMD64,
+	ByteOrder: binary.LittleEndian,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     1,
+}
+
+var ArchARM = &Arch{
+	Name:      "arm",
+	Family:    ARM,
+	ByteOrder: binary.LittleEndian,
+	PtrSize:   4,
+	RegSize:   4,
+	MinLC:     4,
+}
+
+var ArchARM64 = &Arch{
+	Name:      "arm64",
+	Family:    ARM64,
+	ByteOrder: binary.LittleEndian,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchMIPS = &Arch{
+	Name:      "mips",
+	Family:    MIPS,
+	ByteOrder: binary.BigEndian,
+	PtrSize:   4,
+	RegSize:   4,
+	MinLC:     4,
+}
+
+var ArchMIPSLE = &Arch{
+	Name:      "mipsle",
+	Family:    MIPS,
+	ByteOrder: binary.LittleEndian,
+	PtrSize:   4,
+	RegSize:   4,
+	MinLC:     4,
+}
+
+var ArchMIPS64 = &Arch{
+	Name:      "mips64",
+	Family:    MIPS64,
+	ByteOrder: binary.BigEndian,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchMIPS64LE = &Arch{
+	Name:      "mips64le",
+	Family:    MIPS64,
+	ByteOrder: binary.LittleEndian,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchPPC64 = &Arch{
+	Name:      "ppc64",
+	Family:    PPC64,
+	ByteOrder: binary.BigEndian,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchPPC64LE = &Arch{
+	Name:      "ppc64le",
+	Family:    PPC64,
+	ByteOrder: binary.LittleEndian,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchRISCV64 = &Arch{
+	Name:      "riscv64",
+	Family:    RISCV64,
+	ByteOrder: binary.LittleEndian,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchS390X = &Arch{
+	Name:      "s390x",
+	Family:    S390X,
+	ByteOrder: binary.BigEndian,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     2,
+}
+
+var ArchWasm = &Arch{
+	Name:      "wasm",
+	Family:    Wasm,
+	ByteOrder: binary.LittleEndian,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     1,
+}
+
+var Archs = [...]*Arch{
+	Arch386,
+	ArchAMD64,
+	ArchARM,
+	ArchARM64,
+	ArchMIPS,
+	ArchMIPSLE,
+	ArchMIPS64,
+	ArchMIPS64LE,
+	ArchPPC64,
+	ArchPPC64LE,
+	ArchRISCV64,
+	ArchS390X,
+	ArchWasm,
+}