62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
|
/*
|
||
|
|
* ARM AArch64 thread support for bsd-user.
|
||
|
|
*
|
||
|
|
* Copyright (c) 2015 Stacey D. Son <sson at FreeBSD>
|
||
|
|
*
|
||
|
|
* 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_ARCH_THREAD_H
|
||
|
|
#define TARGET_ARCH_THREAD_H
|
||
|
|
|
||
|
|
/* Compare to arm64/arm64/vm_machdep.c cpu_set_upcall_kse() */
|
||
|
|
static inline void target_thread_set_upcall(CPUARMState *regs, abi_ulong entry,
|
||
|
|
abi_ulong arg, abi_ulong stack_base, abi_ulong stack_size)
|
||
|
|
{
|
||
|
|
abi_ulong sp;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Make sure the stack is properly aligned.
|
||
|
|
* arm64/include/param.h (STACKLIGN() macro)
|
||
|
|
*/
|
||
|
|
sp = ROUND_DOWN(stack_base + stack_size, 16);
|
||
|
|
|
||
|
|
/* sp = stack base */
|
||
|
|
regs->xregs[31] = sp;
|
||
|
|
/* pc = start function entry */
|
||
|
|
regs->pc = entry;
|
||
|
|
/* r0 = arg */
|
||
|
|
regs->xregs[0] = arg;
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void target_thread_init(struct target_pt_regs *regs,
|
||
|
|
struct image_info *infop)
|
||
|
|
{
|
||
|
|
abi_long stack = infop->start_stack;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Make sure the stack is properly aligned.
|
||
|
|
* arm64/include/param.h (STACKLIGN() macro)
|
||
|
|
*/
|
||
|
|
|
||
|
|
memset(regs, 0, sizeof(*regs));
|
||
|
|
regs->regs[0] = infop->start_stack;
|
||
|
|
regs->pc = infop->entry;
|
||
|
|
regs->sp = ROUND_DOWN(stack, 16);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* TARGET_ARCH_THREAD_H */
|