[libc-commits] [libc] [libc][setjmp][x86] implement setjmp in terms of out of line asm (PR #88157)

[James Y Knight via libc-commits]

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@@ -0,0 +1,50 @@
+//===-- Implementation of setjmp --------------------------------*- ASM -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#define paste(ns) _ZN22 ## ns ## 6setjmpEP9__jmp_buf
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jyknight wrote:

I suggest an extern C name which includes the expansion of LIBC_NAMESPACE in the name, rather than manual C++ name-mangling. If you want to do C++ name-mangling you'll need to figure out how to generate the "22" since that needs to be the length of the namespace.

https://github.com/llvm/llvm-project/pull/88157