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reconcile merge

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Signed-off-by: Huamin Chen <hchen@redhat.com>
This commit is contained in:
Huamin Chen
2019-01-15 16:20:41 +00:00
parent 85b8415024
commit e46099a504
2425 changed files with 271763 additions and 40453 deletions
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37
vendor/golang.org/x/sys/unix/mksyscall.go generated vendored
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@ -93,10 +93,10 @@ func main() {
goarch = os.Getenv("GOARCH")
}
// Check that we are using the new build system if we should
if goos == "linux" && goarch != "sparc64" {
// Check that we are using the Docker-based build system if we should
if goos == "linux" {
if os.Getenv("GOLANG_SYS_BUILD") != "docker" {
fmt.Fprintf(os.Stderr, "In the new build system, mksyscall should not be called directly.\n")
fmt.Fprintf(os.Stderr, "In the Docker-based build system, mksyscall should not be called directly.\n")
fmt.Fprintf(os.Stderr, "See README.md\n")
os.Exit(1)
}
@ -116,6 +116,12 @@ func main() {
endianness = "little-endian"
}
libc := false
if goos == "darwin" && strings.Contains(buildTags(), ",go1.12") {
libc = true
}
trampolines := map[string]bool{}
text := ""
for _, path := range flag.Args() {
file, err := os.Open(path)
@ -272,6 +278,20 @@ func main() {
sysname = strings.ToUpper(sysname)
}
var libcFn string
if libc {
asm = "syscall_" + strings.ToLower(asm[:1]) + asm[1:] // internal syscall call
sysname = strings.TrimPrefix(sysname, "SYS_") // remove SYS_
sysname = strings.ToLower(sysname) // lowercase
if sysname == "getdirentries64" {
// Special case - libSystem name and
// raw syscall name don't match.
sysname = "__getdirentries64"
}
libcFn = sysname
sysname = "funcPC(libc_" + sysname + "_trampoline)"
}
// Actual call.
arglist := strings.Join(args, ", ")
call := fmt.Sprintf("%s(%s, %s)", asm, sysname, arglist)
@ -339,6 +359,17 @@ func main() {
text += "\treturn\n"
text += "}\n\n"
if libc && !trampolines[libcFn] {
// some system calls share a trampoline, like read and readlen.
trampolines[libcFn] = true
// Declare assembly trampoline.
text += fmt.Sprintf("func libc_%s_trampoline()\n", libcFn)
// Assembly trampoline calls the libc_* function, which this magic
// redirects to use the function from libSystem.
text += fmt.Sprintf("//go:linkname libc_%s libc_%s\n", libcFn, libcFn)
text += fmt.Sprintf("//go:cgo_import_dynamic libc_%s %s \"/usr/lib/libSystem.B.dylib\"\n", libcFn, libcFn)
text += "\n"
}
}
if err := s.Err(); err != nil {
fmt.Fprintf(os.Stderr, err.Error())