runtime: correct various Go -> C function calls

Some things get converted.
Other things (too complex or too many C deps) get onM calls.
Other things (too simple) get #pragma textflag NOSPLIT.

After this CL, the offending function list is basically:
        - panic.c
        - netpoll.goc
        - mem*.c
        - race stuff
        - readgstatus
        - entersyscall/exitsyscall

LGTM=r, iant
R=golang-codereviews, r, iant
CC=dvyukov, golang-codereviews, khr
https://golang.org/cl/140930043

1 files changed, 9 insertions, 0 deletions

diff --git a/src/pkg/runtime/stack_test.go b/src/pkg/runtime/stack_test.go
index b3dcbd12a0..a822d73db4 100644
--- a/src/pkg/runtime/stack_test.go
+++ b/src/pkg/runtime/stack_test.go
@@ -341,3 +341,12 @@ func TestStackOutput(t *testing.T) {
 		t.Errorf("Stack output should begin with \"goroutine \"")
 	}
 }
+
+func TestStackAllOutput(t *testing.T) {
+	b := make([]byte, 1024)
+	stk := string(b[:Stack(b, true)])
+	if !strings.HasPrefix(stk, "goroutine ") {
+		t.Errorf("Stack (len %d):\n%s", len(stk), stk)
+		t.Errorf("Stack output should begin with \"goroutine \"")
+	}
+}