diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/nios2/swapcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/nios2/swapcontext.S | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/sysdeps/unix/sysv/linux/nios2/swapcontext.S b/sysdeps/unix/sysv/linux/nios2/swapcontext.S deleted file mode 100644 index 488d702..0000000 --- a/sysdeps/unix/sysv/linux/nios2/swapcontext.S +++ /dev/null @@ -1,125 +0,0 @@ -/* Modify saved context. - Copyright (C) 2015-2024 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 <sysdep.h> -#include "ucontext_i.h" - -/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */ - .text -ENTRY(__swapcontext) - - /* Same as getcontext(). */ - stw r16, (UCONTEXT_MCONTEXT + 16*4)(r4) - stw r17, (UCONTEXT_MCONTEXT + 17*4)(r4) - stw r18, (UCONTEXT_MCONTEXT + 18*4)(r4) - stw r19, (UCONTEXT_MCONTEXT + 19*4)(r4) - stw r20, (UCONTEXT_MCONTEXT + 20*4)(r4) - stw r21, (UCONTEXT_MCONTEXT + 21*4)(r4) - stw r22, (UCONTEXT_MCONTEXT + 22*4)(r4) - stw ra, (UCONTEXT_MCONTEXT + 24*4)(r4) - stw fp, (UCONTEXT_MCONTEXT + 25*4)(r4) - stw gp, (UCONTEXT_MCONTEXT + 26*4)(r4) - /* Store return address at place for EA. */ - stw ra, (UCONTEXT_MCONTEXT + 28*4)(r4) - stw sp, (UCONTEXT_MCONTEXT + 29*4)(r4) - /* Store zero for return success. */ - stw zero, (UCONTEXT_MCONTEXT + 2*4)(r4) - - /* Store value "1" at uc_flags to recognize as getcontext created. */ - movi r2, 1 - stw r2, UCONTEXT_FLAGS(r4) - - /* Store MCONTEXT_VERSION at first word of mcontext_t. */ - movi r2, MCONTEXT_VERSION - stw r2, UCONTEXT_MCONTEXT(r4) - - /* Save ucp to non-argument syscall preserved register. */ - mov r10, r5 - - /* Get signal mask. */ - /* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */ - movi r7, _NSIG8 - addi r6, r4, UCONTEXT_SIGMASK - mov r5, zero - movi r4, SIG_BLOCK - movi r2, SYS_ify (rt_sigprocmask) - trap - bne r7, zero, SYSCALL_ERROR_LABEL - - - /* Same as setcontext(). */ - ldw r5, UCONTEXT_FLAGS(r10) - movi r6, 1 - bne r5, r6, .Lsigreturn - - /* Restore signal mask. */ - /* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, NULL, _NSIG8) */ - movi r7, _NSIG8 - addi r5, r10, UCONTEXT_SIGMASK - mov r6, zero - movi r4, SIG_SETMASK - movi r2, SYS_ify (rt_sigprocmask) - trap - bne r7, zero, SYSCALL_ERROR_LABEL - - /* Restore argument registers, for the makecontext() case. */ - ldw r4, (UCONTEXT_MCONTEXT + 4*4)(r10) - ldw r5, (UCONTEXT_MCONTEXT + 5*4)(r10) - ldw r6, (UCONTEXT_MCONTEXT + 6*4)(r10) - ldw r7, (UCONTEXT_MCONTEXT + 7*4)(r10) - - ldw r16, (UCONTEXT_MCONTEXT + 16*4)(r10) - ldw r17, (UCONTEXT_MCONTEXT + 17*4)(r10) - ldw r18, (UCONTEXT_MCONTEXT + 18*4)(r10) - ldw r19, (UCONTEXT_MCONTEXT + 19*4)(r10) - ldw r20, (UCONTEXT_MCONTEXT + 20*4)(r10) - ldw r21, (UCONTEXT_MCONTEXT + 21*4)(r10) - ldw r22, (UCONTEXT_MCONTEXT + 22*4)(r10) - ldw ra, (UCONTEXT_MCONTEXT + 24*4)(r10) - ldw fp, (UCONTEXT_MCONTEXT + 25*4)(r10) - ldw gp, (UCONTEXT_MCONTEXT + 26*4)(r10) - /* Load address to continue execution. */ - ldw r3, (UCONTEXT_MCONTEXT + 28*4)(r10) - ldw sp, (UCONTEXT_MCONTEXT + 29*4)(r10) - - mov r2, zero - jmp r3 - -.Lsigreturn: - addi sp, sp, -RT_SIGFRAME_SIZE - cfi_adjust_cfa_offset (RT_SIGFRAME_SIZE) - - addi r2, sp, RT_SIGFRAME_UCONTEXT - movi r3, UCONTEXT_SIZE-4 -1: - add r6, r4, r3 - ldw r5, 0(r6) - add r7, r2, r3 - addi r3, r3, -4 - stw r5, 0(r7) - bgt r3, zero, 1b - - movi r2, SYS_ify (rt_sigreturn) - trap - - addi sp, sp, RT_SIGFRAME_SIZE - cfi_adjust_cfa_offset (-RT_SIGFRAME_SIZE) - br SYSCALL_ERROR_LABEL - -PSEUDO_END (__swapcontext) -weak_alias (__swapcontext, swapcontext) |