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- /*
- * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
- *
- * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
- */
- #include <sysdep.h>
- #include <sys/syscall.h>
- /*
- * Provide a real sigreturn stub to avoid kernel synthesizing one
- * on user stack at runtime, which needs PTE permissions update
- * (hence TLB entry update) and costly cache line flushes for
- * code modification
- */
- ENTRY(__default_rt_sa_restorer)
- mov r8, __NR_rt_sigreturn
- ARC_TRAP_INSN
- END(__default_rt_sa_restorer)
- libc_hidden_def(__default_rt_sa_restorer)
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