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/*
* Alpha specific CPU ABI and functions for linux-user
*
* Copyright (c) 2007 Jocelyn Mayer
*
* 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 ALPHA_TARGET_CPU_H
#define ALPHA_TARGET_CPU_H
static inline void cpu_clone_regs_child(CPUAlphaState *env, target_ulong newsp,
unsigned flags)
{
if (newsp) {
env->ir[IR_SP] = newsp;
}
env->ir[IR_V0] = 0;
env->ir[IR_A3] = 0;
env->ir[IR_A4] = 1; /* OSF/1 secondary return: child */
}
static inline void cpu_clone_regs_parent(CPUAlphaState *env, unsigned flags)
{
/*
* OSF/1 secondary return: parent
* Note that the kernel does not do this if SETTLS, because the
* settls argument register is still live after copy_thread.
*/
if (!(flags & CLONE_SETTLS)) {
env->ir[IR_A4] = 0;
}
}
static inline void cpu_set_tls(CPUAlphaState *env, target_ulong newtls)
{
env->unique = newtls;
}
static inline abi_ulong get_sp_from_cpustate(CPUAlphaState *state)
{
return state->ir[IR_SP];
}
#endif
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