LXR qemu/linux-user/ppc/target

   1/*
   2 * PowerPC specific CPU ABI and functions for linux-user
   3 *
   4 * Copyright (c) 2003-2007 Jocelyn Mayer
   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 PPC_TARGET_CPU_H
  20#define PPC_TARGET_CPU_H
  21
  22static inline void cpu_clone_regs_child(CPUPPCState *env, target_ulong newsp,
  23                                        unsigned flags)
  24{
  25    if (newsp) {
  26        env->gpr[1] = newsp;
  27    }
  28    env->gpr[3] = 0;
  29}
  30
  31static inline void cpu_clone_regs_parent(CPUPPCState *env, unsigned flags)
  32{
  33}
  34
  35static inline void cpu_set_tls(CPUPPCState *env, target_ulong newtls)
  36{
  37#if defined(TARGET_PPC64)
  38    /* The kernel checks TIF_32BIT here; we don't support loading 32-bit
  39       binaries on PPC64 yet. */
  40    env->gpr[13] = newtls;
  41#else
  42    env->gpr[2] = newtls;
  43#endif
  44}
  45
  46#ifndef EF_PPC64_ABI
  47#define EF_PPC64_ABI           0x3
  48#endif
  49
  50static inline uint32_t get_ppc64_abi(struct image_info *infop)
  51{
  52  return infop->elf_flags & EF_PPC64_ABI;
  53}
  54
  55static inline abi_ulong get_sp_from_cpustate(CPUPPCState *state)
  56{
  57    return state->gpr[1];
  58}
  59#endif
  60