runtime: use ABIInternal for calls to sigtrampgo on linux/loong64

Change-Id: I13fd5a96daff66a2ecb54f5bafa3d6e5c60f3879
Reviewed-on: https://go-review.googlesource.com/c/go/+/586357
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>

diff --git a/src/runtime/sys_linux_loong64.s b/src/runtime/sys_linux_loong64.s
index 0a25d5604799167fb7a14ebe8009018f2d99bdfd..57cee99da7a6582dddf8b93bac6b5f2bdf9fb5de 100644 (file)
--- a/src/runtime/sys_linux_loong64.s
+++ b/src/runtime/sys_linux_loong64.s
@@ -431,12 +431,9 @@ TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
        JAL     (R20)
        RET
 
+// Called from c-abi, R4: sig, R5: info, R6: cxt
 // func sigtramp(signo, ureg, ctxt unsafe.Pointer)
 TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$168
-       MOVW    R4, (1*8)(R3)
-       MOVV    R5, (2*8)(R3)
-       MOVV    R6, (3*8)(R3)
-
        // Save callee-save registers in the case of signal forwarding.
        // Please refer to https://golang.org/issue/31827 .
        SAVE_R22_TO_R31((4*8))
@@ -444,12 +441,13 @@ TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$168
 
        // this might be called in external code context,
        // where g is not set.
-       MOVB    runtime·iscgo(SB), R4
-       BEQ     R4, 2(PC)
+       MOVB    runtime·iscgo(SB), R7
+       BEQ     R7, 2(PC)
        JAL     runtime·load_g(SB)
 
-       MOVV    $runtime·sigtrampgo(SB), R4
-       JAL     (R4)
+       // R5 and R6 already contain info and ctx, respectively.
+       MOVV    $runtime·sigtrampgo<ABIInternal>(SB), R7
+       JAL     (R7)
 
        // Restore callee-save registers.
        RESTORE_R22_TO_R31((4*8))