/* * 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)