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/*
* ARM AArch64 specific CPU ABI and functions for linux-user
*
* Copyright (c) 2013 Alexander Graf <agraf@suse.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef AARCH64_TARGET_CPU_H
#define AARCH64_TARGET_CPU_H
static inline void cpu_clone_regs_child(CPUARMState *env, target_ulong newsp,
unsigned flags)
{
if (newsp) {
env->xregs[31] = newsp;
}
env->xregs[0] = 0;
}
static inline void cpu_clone_regs_parent(CPUARMState *env, unsigned flags)
{
}
static inline void cpu_set_tls(CPUARMState *env, target_ulong newtls)
{
/*
* Note that AArch64 Linux keeps the TLS pointer in TPIDR; this is
* different from AArch32 Linux, which uses TPIDRRO.
*/
env->cp15.tpidr_el[0] = newtls;
/* TPIDR2_EL0 is cleared with CLONE_SETTLS. */
env->cp15.tpidr2_el0 = 0;
}
static inline abi_ulong get_sp_from_cpustate(CPUARMState *state)
{
return state->xregs[31];
}
#endif
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