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-rw-r--r--vendor/golang.org/x/sys/unix/mkpost.go74
1 files changed, 24 insertions, 50 deletions
diff --git a/vendor/golang.org/x/sys/unix/mkpost.go b/vendor/golang.org/x/sys/unix/mkpost.go
index d3ff659..ed50d90 100644
--- a/vendor/golang.org/x/sys/unix/mkpost.go
+++ b/vendor/golang.org/x/sys/unix/mkpost.go
@@ -8,11 +8,10 @@
// modify the generated types. It is used to clean up
// the sys API in an architecture specific manner.
//
-// mkpost is run after cgo -godefs; see README.md.
+// mkpost is run after cgo -godefs by mkall.sh.
package main
import (
- "bytes"
"fmt"
"go/format"
"io/ioutil"
@@ -22,67 +21,42 @@ import (
)
func main() {
- // Get the OS and architecture (using GOARCH_TARGET if it exists)
- goos := os.Getenv("GOOS")
- goarch := os.Getenv("GOARCH_TARGET")
- if goarch == "" {
- goarch = os.Getenv("GOARCH")
- }
- // Check that we are using the new build system if we should be.
- if goos == "linux" && goarch != "sparc64" {
- if os.Getenv("GOLANG_SYS_BUILD") != "docker" {
- os.Stderr.WriteString("In the new build system, mkpost should not be called directly.\n")
- os.Stderr.WriteString("See README.md\n")
- os.Exit(1)
- }
- }
-
b, err := ioutil.ReadAll(os.Stdin)
if err != nil {
log.Fatal(err)
}
+ s := string(b)
- // If we have empty Ptrace structs, we should delete them. Only s390x emits
- // nonempty Ptrace structs.
- ptraceRexexp := regexp.MustCompile(`type Ptrace((Psw|Fpregs|Per) struct {\s*})`)
- b = ptraceRexexp.ReplaceAll(b, nil)
-
- // Replace the control_regs union with a blank identifier for now.
- controlRegsRegex := regexp.MustCompile(`(Control_regs)\s+\[0\]uint64`)
- b = controlRegsRegex.ReplaceAll(b, []byte("_ [0]uint64"))
-
- // Remove fields that are added by glibc
- // Note that this is unstable as the identifers are private.
- removeFieldsRegex := regexp.MustCompile(`X__glibc\S*`)
- b = removeFieldsRegex.ReplaceAll(b, []byte("_"))
-
- // We refuse to export private fields on s390x
+ goarch := os.Getenv("GOARCH")
+ goos := os.Getenv("GOOS")
if goarch == "s390x" && goos == "linux" {
- // Remove cgo padding fields
- removeFieldsRegex := regexp.MustCompile(`Pad_cgo_\d+`)
- b = removeFieldsRegex.ReplaceAll(b, []byte("_"))
+ // Export the types of PtraceRegs fields.
+ re := regexp.MustCompile("ptrace(Psw|Fpregs|Per)")
+ s = re.ReplaceAllString(s, "Ptrace$1")
- // Remove padding, hidden, or unused fields
- removeFieldsRegex = regexp.MustCompile(`X_\S+`)
- b = removeFieldsRegex.ReplaceAll(b, []byte("_"))
- }
+ // Replace padding fields inserted by cgo with blank identifiers.
+ re = regexp.MustCompile("Pad_cgo[A-Za-z0-9_]*")
+ s = re.ReplaceAllString(s, "_")
- // Remove the first line of warning from cgo
- b = b[bytes.IndexByte(b, '\n')+1:]
- // Modify the command in the header to include:
- // mkpost, our own warning, and a build tag.
- replacement := fmt.Sprintf(`$1 | go run mkpost.go
-// Code generated by the command above; see README.md. DO NOT EDIT.
+ // Replace other unwanted fields with blank identifiers.
+ re = regexp.MustCompile("X_[A-Za-z0-9_]*")
+ s = re.ReplaceAllString(s, "_")
-// +build %s,%s`, goarch, goos)
- cgoCommandRegex := regexp.MustCompile(`(cgo -godefs .*)`)
- b = cgoCommandRegex.ReplaceAll(b, []byte(replacement))
+ // Replace the control_regs union with a blank identifier for now.
+ re = regexp.MustCompile("(Control_regs)\\s+\\[0\\]uint64")
+ s = re.ReplaceAllString(s, "_ [0]uint64")
+ }
// gofmt
- b, err = format.Source(b)
+ b, err = format.Source([]byte(s))
if err != nil {
log.Fatal(err)
}
- os.Stdout.Write(b)
+ // Append this command to the header to show where the new file
+ // came from.
+ re := regexp.MustCompile("(cgo -godefs [a-zA-Z0-9_]+\\.go.*)")
+ b = re.ReplaceAll(b, []byte("$1 | go run mkpost.go"))
+
+ fmt.Printf("%s", b)
}