1 /*
2  *  RISC-V thread support
3  *
4  *  Copyright (c) 2019 Mark Corbin
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License as published by
8  *  the Free Software Foundation; either version 2 of the License, or
9  *  (at your option) any later version.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #ifndef TARGET_ARCH_THREAD_H
21 #define TARGET_ARCH_THREAD_H
22 
23 /* Compare with cpu_set_upcall() in riscv/riscv/vm_machdep.c */
24 static inline void target_thread_set_upcall(CPURISCVState *regs,
25     abi_ulong entry, abi_ulong arg, abi_ulong stack_base,
26     abi_ulong stack_size)
27 {
28     abi_ulong sp;
29 
30     sp = ROUND_DOWN(stack_base + stack_size, 16);
31 
32     regs->gpr[xSP] = sp;
33     regs->pc = entry;
34     regs->gpr[xA0] = arg;
35 }
36 
37 /* Compare with exec_setregs() in riscv/riscv/machdep.c */
38 static inline void target_thread_init(struct target_pt_regs *regs,
39     struct image_info *infop)
40 {
41     regs->sepc = infop->entry;
42     regs->regs[xRA] = infop->entry;
43     regs->regs[xA0] = infop->start_stack;
44     regs->regs[xSP] = ROUND_DOWN(infop->start_stack, 16);
45 }
46 
47 #endif /* TARGET_ARCH_THREAD_H */
48