runtime: add stub sigreturn on arm

When building a shared library, all functions that are declared must actually
be defined.

Change-Id: I1488690cecfb66e62d9fdb3b8d257a4dc31d202a
Reviewed-on: https://go-review.googlesource.com/14187
Reviewed-by: Dave Cheney <dave@cheney.net>

diff --git a/src/runtime/asm_arm.s b/src/runtime/asm_arm.s
index 06591276d9641aaf9653f5e85ad4c3af976f6d78..917cce81c314c3125a8e5a97d695796e95c12846 100644 (file)
--- a/src/runtime/asm_arm.s
+++ b/src/runtime/asm_arm.s
@@ -1072,3 +1072,6 @@ TEXT runtime·usplitR0(SB),NOSPLIT,$0
        MULU    R0, R1
        SUB     R1, R3, R1
        RET
+
+TEXT runtime·sigreturn(SB),NOSPLIT,$0-4
+        RET