| //===-- Implementation of sigsetjmp ---------------------------------------===// |
| // |
| // 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/sigsetjmp.h" |
| #include "hdr/offsetof_macros.h" |
| #include "src/__support/common.h" |
| #include "src/__support/macros/config.h" |
| #include "src/setjmp/setjmp_impl.h" |
| #include "src/setjmp/sigsetjmp_epilogue.h" |
| |
| namespace LIBC_NAMESPACE_DECL { |
| [[gnu::naked]] |
| LLVM_LIBC_FUNCTION(int, sigsetjmp, (sigjmp_buf, int)) { |
| asm(R"( |
| cbz w1, %c[setjmp] |
| |
| str x30, [x0, %c[retaddr]] |
| str x19, [x0, %c[extra]] |
| mov x19, x0 |
| bl %c[setjmp] |
| |
| mov w1, w0 |
| mov x0, x19 |
| ldr x30, [x0, %c[retaddr]] |
| ldr x19, [x0, %c[extra]] |
| b %c[epilogue])" ::[retaddr] "i"(offsetof(__jmp_buf, sig_retaddr)), |
| [extra] "i"(offsetof(__jmp_buf, sig_extra)), [setjmp] "i"(setjmp), |
| [epilogue] "i"(sigsetjmp_epilogue) |
| : "x0", "x1", "x19", "x30"); |
| } |
| } // namespace LIBC_NAMESPACE_DECL |
