github.com/likebike/go--@v0.0.0-20190911215757-0bd925d16e96/go/src/runtime/os_nacl_arm.go (about)

     1  // Copyright 2014 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package runtime
     6  
     7  var hardDiv bool // TODO: set if a hardware divider is available
     8  
     9  func checkgoarm() {
    10  	// TODO(minux): FP checks like in os_linux_arm.go.
    11  
    12  	// NaCl/ARM only supports ARMv7
    13  	if goarm != 7 {
    14  		print("runtime: NaCl requires ARMv7. Recompile using GOARM=7.\n")
    15  		exit(1)
    16  	}
    17  }
    18  
    19  //go:nosplit
    20  func cputicks() int64 {
    21  	// Currently cputicks() is used in blocking profiler and to seed runtime·fastrand().
    22  	// runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
    23  	// TODO: need more entropy to better seed fastrand.
    24  	return nanotime()
    25  }