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7f33b09c | 1 | /* Save current context. |
04277e02 | 2 | Copyright (C) 2009-2019 Free Software Foundation, Inc. |
7f33b09c PD |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
7f33b09c PD |
18 | |
19 | #include "ucontext-macros.h" | |
20 | ||
21 | /* int getcontext (ucontext_t *ucp) */ | |
22 | ||
23 | .text | |
24 | LEAF (__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 | ||
73 | 99: j __syscall_error | |
74 | ||
75 | PSEUDO_END (__getcontext) | |
76 | ||
77 | weak_alias (__getcontext, getcontext) |