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| author | caiyinyu <caiyinyu@loongson.cn> | 2022-07-19 09:20:51 +0800 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-07-26 12:35:12 -0300 |
| commit | f2037efbb33ffaf033b7a601a8a592d54879341c (patch) | |
| tree | 4b615e6fa43e567db92679e209f94aedce0b77ac /sysdeps/unix/sysv/linux/loongarch/getcontext.S | |
| parent | 45955fe61844d94f7faa660eda9e515a6571e8c3 (diff) | |
| download | glibc-f2037efbb33ffaf033b7a601a8a592d54879341c.zip glibc-f2037efbb33ffaf033b7a601a8a592d54879341c.tar.gz glibc-f2037efbb33ffaf033b7a601a8a592d54879341c.tar.bz2 | |
LoongArch: Linux ABI
Diffstat (limited to 'sysdeps/unix/sysv/linux/loongarch/getcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/getcontext.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/loongarch/getcontext.S b/sysdeps/unix/sysv/linux/loongarch/getcontext.S new file mode 100644 index 0000000..43b95e9 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/getcontext.S @@ -0,0 +1,59 @@ +/* Save current context. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C 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 2.1 of the License, or (at your option) any later version. + + The GNU C 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 the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#include "ucontext-macros.h" + +/* int getcontext (ucontext_t *ucp) */ + + .text +LEAF (__getcontext) + SAVE_INT_REG (ra, 1, a0) + SAVE_INT_REG (sp, 3, a0) + SAVE_INT_REG (zero, 4, a0) /* return 0 by overwriting a0. */ + SAVE_INT_REG (x, 21, a0) + SAVE_INT_REG (fp, 22, a0) + SAVE_INT_REG (s0, 23, a0) + SAVE_INT_REG (s1, 24, a0) + SAVE_INT_REG (s2, 25, a0) + SAVE_INT_REG (s3, 26, a0) + SAVE_INT_REG (s4, 27, a0) + SAVE_INT_REG (s5, 28, a0) + SAVE_INT_REG (s6, 29, a0) + SAVE_INT_REG (s7, 30, a0) + SAVE_INT_REG (s8, 31, a0) + st.d ra, a0, MCONTEXT_PC + +/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */ + li.d a3, _NSIG8 + li.d a2, UCONTEXT_SIGMASK + add.d a2, a2, a0 + ori a1, zero,0 + li.d a0, SIG_BLOCK + + li.d a7, SYS_ify (rt_sigprocmask) + syscall 0 + blt a0, zero, 99f + + jirl $r0, $r1, 0 + +99: + b __syscall_error + +PSEUDO_END (__getcontext) + +weak_alias (__getcontext, getcontext) |