1/* Save current context.
2   Copyright (C) 2009-2021 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library.  If not, see
17   <https://www.gnu.org/licenses/>.  */
18
19#include "ucontext-macros.h"
20
21/* int getcontext (ucontext_t *ucp) */
22
23	.text
24LEAF (__getcontext)
25	SAVE_INT_REG (ra,   0, a0)
26	SAVE_INT_REG (ra,   1, a0)
27	SAVE_INT_REG (sp,   2, a0)
28	SAVE_INT_REG (s0,   8, a0)
29	SAVE_INT_REG (s1,   9, a0)
30	SAVE_INT_REG (x0,  10, a0)	/* return 0 by overwriting a0.  */
31	SAVE_INT_REG (s2,  18, a0)
32	SAVE_INT_REG (s3,  19, a0)
33	SAVE_INT_REG (s4,  20, a0)
34	SAVE_INT_REG (s5,  21, a0)
35	SAVE_INT_REG (s6,  22, a0)
36	SAVE_INT_REG (s7,  23, a0)
37	SAVE_INT_REG (s8,  24, a0)
38	SAVE_INT_REG (s9,  25, a0)
39	SAVE_INT_REG (s10, 26, a0)
40	SAVE_INT_REG (s11, 27, a0)
41
42#ifndef __riscv_float_abi_soft
43	frsr	a1
44
45	SAVE_FP_REG (fs0,   8, a0)
46	SAVE_FP_REG (fs1,   9, a0)
47	SAVE_FP_REG (fs2,  18, a0)
48	SAVE_FP_REG (fs3,  19, a0)
49	SAVE_FP_REG (fs4,  20, a0)
50	SAVE_FP_REG (fs5,  21, a0)
51	SAVE_FP_REG (fs6,  22, a0)
52	SAVE_FP_REG (fs7,  23, a0)
53	SAVE_FP_REG (fs8,  24, a0)
54	SAVE_FP_REG (fs9,  25, a0)
55	SAVE_FP_REG (fs10, 26, a0)
56	SAVE_FP_REG (fs11, 27, a0)
57
58	sw	a1, MCONTEXT_FSR(a0)
59#endif /* __riscv_float_abi_soft */
60
61/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
62	li	a3, _NSIG8
63	add     a2, a0, UCONTEXT_SIGMASK
64	mv	a1, zero
65	li	a0, SIG_BLOCK
66
67	li	a7, SYS_ify (rt_sigprocmask)
68	scall
69	bltz	a0, 99f
70
71	ret
72
7399:	j	__syscall_error
74
75PSEUDO_END (__getcontext)
76
77weak_alias (__getcontext, getcontext)
78