| /* Save current context. |
| Copyright (C) 2015-2018 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 <sysdep.h> |
| #include "ucontext_i.h" |
| |
| /* int getcontext (ucontext_t *ucp) |
| |
| Returns 0 on success -1 and errno on failure. |
| */ |
| .text |
| ENTRY(__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) |
| |
| /* 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 |
| |
| mov r2, zero |
| ret |
| |
| PSEUDO_END(__getcontext) |
| weak_alias(__getcontext, getcontext) |
