mirror of
https://github.com/golang/go
synced 2024-11-08 14:06:20 -07:00
2959128dc5
mips64 softfloat support is based on mips implementation and introduces
new enviroment variable GOMIPS64.
GOMIPS64 is a GOARCH=mips64{,le} specific option, for a choice between
hard-float and soft-float. Valid values are 'hardfloat' (default) and
'softfloat'. It is passed to the assembler as
'GOMIPS64_{hardfloat,softfloat}'.
Change-Id: I7f73078627f7cb37c588a38fb5c997fe09c56134
Reviewed-on: https://go-review.googlesource.com/108475
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
97 lines
3.1 KiB
Go
97 lines
3.1 KiB
Go
// Copyright 2012 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 main
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
)
|
|
|
|
/*
|
|
* Helpers for building runtime.
|
|
*/
|
|
|
|
// mkzversion writes zversion.go:
|
|
//
|
|
// package sys
|
|
//
|
|
// const TheVersion = <version>
|
|
// const Goexperiment = <goexperiment>
|
|
// const StackGuardMultiplier = <multiplier value>
|
|
//
|
|
func mkzversion(dir, file string) {
|
|
var buf bytes.Buffer
|
|
fmt.Fprintf(&buf, "// Code generated by go tool dist; DO NOT EDIT.\n")
|
|
fmt.Fprintln(&buf)
|
|
fmt.Fprintf(&buf, "package sys\n")
|
|
fmt.Fprintln(&buf)
|
|
fmt.Fprintf(&buf, "const TheVersion = `%s`\n", findgoversion())
|
|
fmt.Fprintf(&buf, "const Goexperiment = `%s`\n", os.Getenv("GOEXPERIMENT"))
|
|
fmt.Fprintf(&buf, "const StackGuardMultiplier = %d\n", stackGuardMultiplier())
|
|
|
|
writefile(buf.String(), file, writeSkipSame)
|
|
}
|
|
|
|
// mkzbootstrap writes cmd/internal/objabi/zbootstrap.go:
|
|
//
|
|
// package objabi
|
|
//
|
|
// const defaultGOROOT = <goroot>
|
|
// const defaultGO386 = <go386>
|
|
// const defaultGOARM = <goarm>
|
|
// const defaultGOMIPS = <gomips>
|
|
// const defaultGOMIPS64 = <gomips64>
|
|
// const defaultGOOS = runtime.GOOS
|
|
// const defaultGOARCH = runtime.GOARCH
|
|
// const defaultGO_EXTLINK_ENABLED = <goextlinkenabled>
|
|
// const version = <version>
|
|
// const stackGuardMultiplier = <multiplier value>
|
|
// const goexperiment = <goexperiment>
|
|
//
|
|
// The use of runtime.GOOS and runtime.GOARCH makes sure that
|
|
// a cross-compiled compiler expects to compile for its own target
|
|
// system. That is, if on a Mac you do:
|
|
//
|
|
// GOOS=linux GOARCH=ppc64 go build cmd/compile
|
|
//
|
|
// the resulting compiler will default to generating linux/ppc64 object files.
|
|
// This is more useful than having it default to generating objects for the
|
|
// original target (in this example, a Mac).
|
|
func mkzbootstrap(file string) {
|
|
var buf bytes.Buffer
|
|
fmt.Fprintf(&buf, "// Code generated by go tool dist; DO NOT EDIT.\n")
|
|
fmt.Fprintln(&buf)
|
|
fmt.Fprintf(&buf, "package objabi\n")
|
|
fmt.Fprintln(&buf)
|
|
fmt.Fprintf(&buf, "import \"runtime\"\n")
|
|
fmt.Fprintln(&buf)
|
|
fmt.Fprintf(&buf, "const defaultGO386 = `%s`\n", go386)
|
|
fmt.Fprintf(&buf, "const defaultGOARM = `%s`\n", goarm)
|
|
fmt.Fprintf(&buf, "const defaultGOMIPS = `%s`\n", gomips)
|
|
fmt.Fprintf(&buf, "const defaultGOMIPS64 = `%s`\n", gomips64)
|
|
fmt.Fprintf(&buf, "const defaultGOOS = runtime.GOOS\n")
|
|
fmt.Fprintf(&buf, "const defaultGOARCH = runtime.GOARCH\n")
|
|
fmt.Fprintf(&buf, "const defaultGO_EXTLINK_ENABLED = `%s`\n", goextlinkenabled)
|
|
fmt.Fprintf(&buf, "const version = `%s`\n", findgoversion())
|
|
fmt.Fprintf(&buf, "const stackGuardMultiplier = %d\n", stackGuardMultiplier())
|
|
fmt.Fprintf(&buf, "const goexperiment = `%s`\n", os.Getenv("GOEXPERIMENT"))
|
|
|
|
writefile(buf.String(), file, writeSkipSame)
|
|
}
|
|
|
|
// stackGuardMultiplier returns a multiplier to apply to the default
|
|
// stack guard size. Larger multipliers are used for non-optimized
|
|
// builds that have larger stack frames.
|
|
func stackGuardMultiplier() int {
|
|
for _, s := range strings.Split(os.Getenv("GO_GCFLAGS"), " ") {
|
|
if s == "-N" {
|
|
return 2
|
|
}
|
|
}
|
|
return 1
|
|
}
|