qemu/linux-user/hppa/target_cpu.h
Richard Henderson 07a6ecf48f linux-user: Introduce cpu_clone_regs_parent
We will need a target-specific hook for adjusting registers
in the parent during clone.  Add an empty inline function for
each target, and invoke it from the proper places.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191106113318.10226-11-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:43:25 +01:00

49 lines
1.4 KiB
C

/*
* HPPA specific CPU ABI and functions for linux-user
*
* Copyright (c) 2016 Richard Henderson
*
* 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 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 HPPA_TARGET_CPU_H
#define HPPA_TARGET_CPU_H
static inline void cpu_clone_regs_child(CPUHPPAState *env, target_ulong newsp,
unsigned flags)
{
if (newsp) {
env->gr[30] = newsp;
}
/* Indicate child in return value. */
env->gr[28] = 0;
/* Return from the syscall. */
env->iaoq_f = env->gr[31];
env->iaoq_b = env->gr[31] + 4;
}
static inline void cpu_clone_regs_parent(CPUHPPAState *env, unsigned flags)
{
}
static inline void cpu_set_tls(CPUHPPAState *env, target_ulong newtls)
{
env->cr[27] = newtls;
}
static inline abi_ulong get_sp_from_cpustate(CPUHPPAState *state)
{
return state->gr[30];
}
#endif