LXR qemu/linux-user/aarch64/target

   1/*
   2 * ARM AArch64 specific CPU ABI and functions for linux-user
   3 *
   4 * Copyright (c) 2013 Alexander Graf <agraf@suse.de>
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License as published by the Free Software Foundation; either
   9 * version 2.1 of the License, or (at your option) any later version.
  10 *
  11 * This library is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * Lesser General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU Lesser General Public
  17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19#ifndef AARCH64_TARGET_CPU_H
  20#define AARCH64_TARGET_CPU_H
  21
  22static inline void cpu_clone_regs_child(CPUARMState *env, target_ulong newsp,
  23                                        unsigned flags)
  24{
  25    if (newsp) {
  26        env->xregs[31] = newsp;
  27    }
  28    env->xregs[0] = 0;
  29}
  30
  31static inline void cpu_clone_regs_parent(CPUARMState *env, unsigned flags)
  32{
  33}
  34
  35static inline void cpu_set_tls(CPUARMState *env, target_ulong newtls)
  36{
  37    /* Note that AArch64 Linux keeps the TLS pointer in TPIDR; this is
  38     * different from AArch32 Linux, which uses TPIDRRO.
  39     */
  40    env->cp15.tpidr_el[0] = newtls;
  41}
  42
  43static inline abi_ulong get_sp_from_cpustate(CPUARMState *state)
  44{
  45   return state->xregs[31];
  46}
  47#endif
  48