runtime: break out system-specific constants into package sys

runtime/internal/sys will hold system-, architecture- and config-
specific constants.

Updates #11647

Change-Id: I6db29c312556087a42e8d2bdd9af40d157c56b54
Reviewed-on: https://go-review.googlesource.com/16817
Reviewed-by: Russ Cox <rsc@golang.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/runtime/export_test.go b/src/runtime/export_test.go
index ad2bf1c628..6a4eae607a 100644
--- a/src/runtime/export_test.go
+++ b/src/runtime/export_test.go
@@ -8,6 +8,7 @@ package runtime
 
 import (
 	"runtime/internal/atomic"
+	"runtime/internal/sys"
 	"unsafe"
 )
 
@@ -115,7 +116,7 @@ func GostringW(w []uint16) (s string) {
 var Gostringnocopy = gostringnocopy
 var Maxstring = &maxstring
 
-type Uintreg uintreg
+type Uintreg sys.Uintreg
 
 var Open = open
 var Close = closefd
@@ -125,7 +126,7 @@ var Write = write
 func Envs() []string     { return envs }
 func SetEnvs(e []string) { envs = e }
 
-var BigEndian = _BigEndian
+var BigEndian = sys.BigEndian
 
 // For benchmarking.
 
@@ -156,7 +157,7 @@ func BenchSetType(n int, x interface{}) {
 	})
 }
 
-const PtrSize = ptrSize
+const PtrSize = sys.PtrSize
 
 var TestingAssertE2I2GC = &testingAssertE2I2GC
 var TestingAssertE2T2GC = &testingAssertE2T2GC