runtime: add reference to debugPinnerV1

This is intended to be used by debuggers, to keep heap memory reachable
even if it isn't referenced from anywhere else.

Change-Id: I1e900e02b4fe3a188f8173cec70f8de32122489b
Reviewed-on: https://go-review.googlesource.com/c/go/+/682875
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Mark Freeman <mark@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

diff --git a/src/runtime/asm_loong64.s b/src/runtime/asm_loong64.s
index 46ef00bab8aa3564101e05ac2fd4eff70d02c537..ee7f825e1f6681a9fd2a2b8041745812e9e15e1f 100644 (file)
--- a/src/runtime/asm_loong64.s
+++ b/src/runtime/asm_loong64.s
@@ -70,8 +70,9 @@ nocgo:
        // start this M
        JAL     runtime·mstart(SB)
 
-       // Prevent dead-code elimination of debugCallV2, which is
+       // Prevent dead-code elimination of debugCallV2 and debugPinnerV1, which are
        // intended to be called by debuggers.
+       MOVV    $runtime·debugPinnerV1<ABIInternal>(SB), R0
        MOVV    $runtime·debugCallV2<ABIInternal>(SB), R0
 
        MOVV    R0, 1(R0)