runtime: move osinit to Go

    
    This is a step toward updating libgo to 1.13.  This adds the 1.13
    version of the osinit function to Go code, and removes the
    corresponding code from the C runtime.  This should simplify future updates.
    Some additional 1.13 code was brought in to simplify this change.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/191717

From-SVN: r275010

1 files changed, 19 insertions, 2 deletions

diff --git a/libgo/go/runtime/os3_solaris.go b/libgo/go/runtime/os3_solaris.go
index e67d32c..d5fbccd 100644
--- a/libgo/go/runtime/os3_solaris.go
+++ b/libgo/go/runtime/os3_solaris.go
@@ -12,10 +12,27 @@ var executablePath string
 func getexecname() *byte
 
 //extern getpagesize
-func getpagesize() int32
+func getPageSize() int32
+
+//extern sysconf
+func sysconf(int32) _C_long
+
+func getncpu() int32 {
+	n := int32(sysconf(__SC_NPROCESSORS_ONLN))
+	if n < 1 {
+		return 1
+	}
+	return n
+}
+
+func osinit() {
+	ncpu = getncpu()
+	if physPageSize == 0 {
+		physPageSize = uintptr(getPageSize())
+	}
+}
 
 func sysargs(argc int32, argv **byte) {
-	physPageSize = uintptr(getpagesize())
 	executablePath = gostringnocopy(getexecname())
 }