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triple.go
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triple.go
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// Copyright (C) 2017 Google 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 codegen
import (
"strings"
"github.com/google/gapid/core/os/device"
)
// TargetTriple returns an LLVM target triple for the given ABI in the form:
// <arch><sub>-<vendor>-<os>-<abi>
//
// References:
// https://github.com/llvm-mirror/llvm/blob/master/lib/Support/Triple.cpp
// https://clang.llvm.org/docs/CrossCompilation.html
func TargetTriple(dev *device.ABI) Triple {
out := Triple{"unknown", "unknown", "unknown", "unknown"}
// Consult Triple.cpp for legal values for each of these.
// arch: parseArch() + parseSubArch()
// vendor: parseVendor()
// os: parseOS()
// abi: parseEnvironment() + parseFormat()
switch dev.Architecture {
case device.ARMv7a:
out.arch = "armv7"
case device.ARMv8a:
out.arch = "aarch64"
case device.X86:
out.arch = "i386"
case device.X86_64:
out.arch = "x86_64"
}
switch dev.OS {
case device.Windows:
out.vendor, out.os, out.abi = "w64", "windows", "gnu"
case device.OSX:
out.vendor, out.os = "apple", "darwin"
case device.Linux:
out.os = "linux"
case device.Stadia:
out.os = "linux"
case device.Android:
out.os, out.abi = "linux", "androideabi"
}
return out
}
// Triple represents an LLVM target triple.
type Triple struct {
arch, vendor, os, abi string
}
// NewTriple returns a new Triple.
func NewTriple(arch, vendor, os, abi string) Triple {
return Triple{arch, vendor, os, abi}
}
func (t Triple) String() string {
return strings.Join([]string{t.arch, t.vendor, t.os, t.abi}, "-")
}