[libc-commits] [libc] [libc] implement sigsetjmp/siglongjmp for x86-64 (PR #136072)

[Schrodinger ZHU Yifan via libc-commits]

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@@ -0,0 +1,21 @@
+//===-- Implementation of siglongjmp --------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/setjmp/siglongjmp.h"
+#include "src/__support/common.h"
+#include "src/setjmp/longjmp.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+// siglongjmp is the same as longjmp. The additional recovery work is done in
+// the epilogue of the sigsetjmp function.
+LLVM_LIBC_FUNCTION(void, siglongjmp, (jmp_buf buf, int val)) {
+  return longjmp(buf, val);
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SchrodingerZhu wrote:

That would be the best solution. The problem here is that alias must be created in the same TU. We can switch to that once all arch implementations are provided.

https://github.com/llvm/llvm-project/pull/136072