| /* Copyright (C) 2003-2014 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 <shlib-compat.h> |
| #include <pthread-errnos.h> |
| #include <structsem.h> |
| #include <lowlevellock.h> |
| #include "lowlevel-atomic.h" |
| |
| |
| .text |
| |
| .globl __new_sem_post |
| .type __new_sem_post,@function |
| .align 5 |
| cfi_startproc |
| __new_sem_post: |
| mov.l @(VALUE,r4), r2 |
| 0: |
| mov.l .Lmax, r1 |
| cmp/eq r1, r2 |
| bt/s 3f |
| mov r2, r3 |
| mov r3, r5 |
| add #1, r5 |
| CMPXCHG (r3, @(VALUE,r4), r5, r2) |
| bf 0b |
| mov.l @(NWAITERS,r4), r2 |
| tst r2, r2 |
| bt 2f |
| mov #FUTEX_WAKE, r5 |
| mov.l @(PRIVATE,r4), r1 |
| or r1, r5 |
| mov #1, r6 |
| mov #0, r7 |
| mov #SYS_futex, r3 |
| extu.b r3, r3 |
| trapa #0x14 |
| SYSCALL_INST_PAD |
| |
| cmp/pz r0 |
| bf 1f |
| 2: |
| rts |
| mov #0, r0 |
| |
| 1: |
| bra 4f |
| mov #EINVAL, r2 |
| |
| 3: |
| mov #EOVERFLOW, r2 |
| 4: |
| mov.l r12, @-r15 |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (r12, 0) |
| mov.l r8, @-r15 |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (r8, 0) |
| sts.l pr, @-r15 |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (pr, 0) |
| mova .Lgot3, r0 |
| mov.l .Lgot3, r12 |
| add r0, r12 |
| |
| mov.l .Lerrno3, r0 |
| stc gbr, r1 |
| mov.l @(r0, r12), r0 |
| bra .Lexit |
| add r1, r0 |
| .align 2 |
| .Lerrno3: |
| .long errno@GOTTPOFF |
| .Lexit: |
| mov.l r2, @r0 |
| lds.l @r15+, pr |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (pr) |
| mov.l @r15+, r8 |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (r8) |
| mov.l @r15+, r12 |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (r12) |
| rts |
| mov #-1, r0 |
| cfi_endproc |
| |
| .align 2 |
| .Lmax: |
| .long SEM_VALUE_MAX |
| .Lgot3: |
| .long _GLOBAL_OFFSET_TABLE_ |
| .size __new_sem_post,.-__new_sem_post |
| versioned_symbol(libpthread, __new_sem_post, sem_post, GLIBC_2_1) |
