mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
7f33b09c65
Linux-specific code that is required for maintaining ABI compatibility.
This doesn't contain the actual system call interface, that is split out
in order to avoid having a patch that's too big.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/nptl/pthread-offsets.h: New file.
* sysdeps/riscv/nptl/pthreaddef.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/bits/fcntl.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/bits/mman.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/dl-cache.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/flush-icache.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/riscv/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/makecontext.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/readelflib.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/register-dump.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/setcontext.S: Likewise.
* sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/swapcontext.S: Likewise.
* sysdeps/unix/sysv/linux/riscv/sys/cachectl.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/sys/procfs.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/sys/user.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/ucontext-macros.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/ucontext_i.sym: Likewise.
78 lines
2.1 KiB
ArmAsm
78 lines
2.1 KiB
ArmAsm
/* Save current context.
|
|
Copyright (C) 2009-2018 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include "ucontext-macros.h"
|
|
|
|
/* int getcontext (ucontext_t *ucp) */
|
|
|
|
.text
|
|
LEAF (__getcontext)
|
|
SAVE_INT_REG (ra, 0, a0)
|
|
SAVE_INT_REG (ra, 1, a0)
|
|
SAVE_INT_REG (sp, 2, a0)
|
|
SAVE_INT_REG (s0, 8, a0)
|
|
SAVE_INT_REG (s1, 9, a0)
|
|
SAVE_INT_REG (x0, 10, a0) /* return 0 by overwriting a0. */
|
|
SAVE_INT_REG (s2, 18, a0)
|
|
SAVE_INT_REG (s3, 19, a0)
|
|
SAVE_INT_REG (s4, 20, a0)
|
|
SAVE_INT_REG (s5, 21, a0)
|
|
SAVE_INT_REG (s6, 22, a0)
|
|
SAVE_INT_REG (s7, 23, a0)
|
|
SAVE_INT_REG (s8, 24, a0)
|
|
SAVE_INT_REG (s9, 25, a0)
|
|
SAVE_INT_REG (s10, 26, a0)
|
|
SAVE_INT_REG (s11, 27, a0)
|
|
|
|
#ifndef __riscv_float_abi_soft
|
|
frsr a1
|
|
|
|
SAVE_FP_REG (fs0, 8, a0)
|
|
SAVE_FP_REG (fs1, 9, a0)
|
|
SAVE_FP_REG (fs2, 18, a0)
|
|
SAVE_FP_REG (fs3, 19, a0)
|
|
SAVE_FP_REG (fs4, 20, a0)
|
|
SAVE_FP_REG (fs5, 21, a0)
|
|
SAVE_FP_REG (fs6, 22, a0)
|
|
SAVE_FP_REG (fs7, 23, a0)
|
|
SAVE_FP_REG (fs8, 24, a0)
|
|
SAVE_FP_REG (fs9, 25, a0)
|
|
SAVE_FP_REG (fs10, 26, a0)
|
|
SAVE_FP_REG (fs11, 27, a0)
|
|
|
|
sw a1, MCONTEXT_FSR(a0)
|
|
#endif /* __riscv_float_abi_soft */
|
|
|
|
/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
|
|
li a3, _NSIG8
|
|
add a2, a0, UCONTEXT_SIGMASK
|
|
mv a1, zero
|
|
li a0, SIG_BLOCK
|
|
|
|
li a7, SYS_ify (rt_sigprocmask)
|
|
scall
|
|
bltz a0, 99f
|
|
|
|
ret
|
|
|
|
99: j __syscall_error
|
|
|
|
PSEUDO_END (__getcontext)
|
|
|
|
weak_alias (__getcontext, getcontext)
|