linux-user/ppc/target_cpu.h

   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 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
  22 static inline void cpu_clone_regs(CPUPPCState *env, target_ulong newsp)
  23 {
  24     if (newsp) {
  25         env->gpr[1] = newsp;
  26     }
  27     env->gpr[3] = 0;
  28 }
  29
  30 static inline void cpu_set_tls(CPUPPCState *env, target_ulong newtls)
  31 {
  32 #if defined(TARGET_PPC64)
  33     /* The kernel checks TIF_32BIT here; we don't support loading 32-bit
  34        binaries on PPC64 yet. */
  35     env->gpr[13] = newtls;
  36 #else
  37     env->gpr[2] = newtls;
  38 #endif
  39 }
  40
  41 #ifndef EF_PPC64_ABI
  42 #define EF_PPC64_ABI           0x3
  43 #endif
  44
  45 static inline uint32_t get_ppc64_abi(struct image_info *infop)
  46 {
  47   return infop->elf_flags & EF_PPC64_ABI;
  48 }
  49
  50 static inline abi_ulong get_sp_from_cpustate(CPUPPCState *state)
  51 {
  52     return state->gpr[1];
  53 }
  54 #endif