runtime: fix arm build

The current failure is:
fatal error: runtime: stack split during syscall
goroutine 2 [stack split]:
_addv(0xb6fa0f28, 0xd0a5112e, 0x13156d6e, 0xf8475800, 0xd)
        /usr/local/go/src/pkg/runtime/vlrt_arm.c:66 fp=0xb6fa0ef8
notetsleep(0xb6fa0f9c, 0xf8475800, 0xd, 0x0, 0x0, ...)
        /usr/local/go/src/pkg/runtime/lock_futex.c:156 +0xd0 fp=0xb6fa0f18
runtime.notetsleepg(0xb6fa0f9c, 0xf8475800, 0xd)
        /usr/local/go/src/pkg/runtime/lock_futex.c:197 +0x74 fp=0xb6fa0f3c

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/12052043

diff --git a/src/pkg/runtime/vlop_arm.s b/src/pkg/runtime/vlop_arm.s
index 3a9cac9448e1ba7cc7c8db3df1d7f0ec8ab7d828..bbd42230c9e8d460a6ea858eb21cc4842623b0de 100644 (file)
--- a/src/pkg/runtime/vlop_arm.s
+++ b/src/pkg/runtime/vlop_arm.s
@@ -27,7 +27,7 @@ arg=0
 
 /* replaced use of R10 by R11 because the former can be the data segment base register */
 
-TEXT _mulv(SB), $0
+TEXT _mulv(SB), 7, $0
        MOVW    0(FP), R0
        MOVW    4(FP), R2       /* l0 */
        MOVW    8(FP), R11      /* h0 */

diff --git a/src/pkg/runtime/vlrt_arm.c b/src/pkg/runtime/vlrt_arm.c
index ab805017755f79c857c357c9ab0f7d0cb394fd11..614f35ad2663bb219358597176fe55b1252fd3dd 100644 (file)
--- a/src/pkg/runtime/vlrt_arm.c
+++ b/src/pkg/runtime/vlrt_arm.c
@@ -62,6 +62,7 @@ struct  Vlong
 
 void    runtime·abort(void);
 
+#pragma textflag 7
 void
 _addv(Vlong *r, Vlong a, Vlong b)
 {