1 files changed, 33 insertions, 0 deletions
diff --git a/libgo/go/runtime/os_dragonfly.go b/libgo/go/runtime/os_dragonfly.go
index abcad72..d214f7f 100644
--- a/libgo/go/runtime/os_dragonfly.go
+++ b/libgo/go/runtime/os_dragonfly.go
@@ -19,6 +19,32 @@ func sys_umtx_sleep(addr *uint32, val, timeout int32) int32
 //extern umtx_wakeup
 func sys_umtx_wakeup(addr *uint32, val int32) int32
 
+//go:noescape
+//extern sysctl
+func sysctl(*uint32, uint32, *byte, *uintptr, *byte, uintptr) int32
+
+func getncpu() int32 {
+	mib := [2]uint32{_CTL_HW, _HW_NCPU}
+	out := uint32(0)
+	nout := uintptr(unsafe.Sizeof(out))
+	ret := sysctl(&mib[0], 2, (*byte)(unsafe.Pointer(&out)), &nout, nil, 0)
+	if ret >= 0 {
+		return int32(out)
+	}
+	return 1
+}
+
+func getPageSize() uintptr {
+	mib := [2]uint32{_CTL_HW, _HW_PAGESIZE}
+	out := uint32(0)
+	nout := uintptr(unsafe.Sizeof(out))
+	ret := sysctl(&mib[0], 2, (*byte)(unsafe.Pointer(&out)), &nout, nil, 0)
+	if ret >= 0 {
+		return uintptr(out)
+	}
+	return 0
+}
+
 //go:nosplit
 func futexsleep(addr *uint32, val uint32, ns int64) {
 	systemstack(func() {
@@ -61,3 +87,10 @@ func futexwakeup(addr *uint32, cnt uint32) {
 		*(*int32)(unsafe.Pointer(uintptr(0x1006))) = 0x1006
 	})
 }
+
+func osinit() {
+	ncpu = getncpu()
+	if physPageSize == 0 {
+		physPageSize = getPageSize()
+	}
+}