qemu-patch-raspberry4/linux-user/openrisc/target_cpu.h
Peter Maydell 442a59c8dd linux-user: Enable NPTL for OpenRISC
The OpenRISC kernel ignores CLONE_SETTLS in its copy_thread()
implementation, so a cpu_set_tls() implementation is a no-op.
cpu_clone_regs() was setting the syscall return value in the
wrong register -- it is gpr[11], not gpr[2]. With these two
things fixed, we can compile with NPTL enabled.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Jia Liu <proljc@gmail.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2013-07-22 21:54:12 +03:00

39 lines
1.2 KiB
C

/*
* OpenRISC specific CPU ABI and functions for linux-user
*
* Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
*
* 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 TARGET_CPU_H
#define TARGET_CPU_H
static inline void cpu_clone_regs(CPUOpenRISCState *env, target_ulong newsp)
{
if (newsp) {
env->gpr[1] = newsp;
}
env->gpr[11] = 0;
}
static inline void cpu_set_tls(CPUOpenRISCState *env, target_ulong newtls)
{
/* Linux kernel 3.10 does not pay any attention to CLONE_SETTLS
* in copy_thread(), so QEMU need not do so either.
*/
}
#endif