| /* 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 <tcb-offsets.h> |
| #include <structsem.h> |
| #include <lowlevellock.h> |
| #include "lowlevel-atomic.h" |
| |
| |
| #if VALUE != 0 |
| # error "code needs to be rewritten for VALUE != 0" |
| #endif |
| |
| .text |
| |
| .globl sem_timedwait |
| .type sem_timedwait,@function |
| .align 5 |
| cfi_startproc |
| sem_timedwait: |
| .LSTARTCODE: |
| #ifdef SHARED |
| cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect, |
| DW.ref.__gcc_personality_v0) |
| cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART) |
| #else |
| cfi_personality(DW_EH_PE_absptr, __gcc_personality_v0) |
| cfi_lsda(DW_EH_PE_absptr, .LexceptSTART) |
| #endif |
| mov.l @r4, r0 |
| 2: |
| tst r0, r0 |
| bt 1f |
| mov r0, r3 |
| mov r0, r6 |
| add #-1, r3 |
| CMPXCHG (r6, @r4, r3, r2) |
| bf/s 2b |
| mov r2, r0 |
| rts |
| mov #0, r0 |
| |
| 1: |
| /* Check whether the timeout value is valid. */ |
| mov.l r8, @-r15 |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (r8, 0) |
| mov.l r9, @-r15 |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (r9, 0) |
| mov.l r10, @-r15 |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (r10, 0) |
| mov.l r12, @-r15 |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (r12, 0) |
| sts.l pr, @-r15 |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (pr, 0) |
| add #-8, r15 |
| cfi_adjust_cfa_offset (8) |
| |
| mov r4, r8 |
| mov r5, r9 |
| |
| /* Check for invalid nanosecond field. */ |
| mov.l @(4,r9), r0 |
| mov.l .L1g, r1 |
| cmp/hs r1, r0 |
| bt/s .Lerrno_exit |
| mov #EINVAL, r10 |
| INC (@(NWAITERS,r8),r2) |
| |
| 7: |
| /* Compute relative timeout. */ |
| mov r15, r4 |
| mov #0, r5 |
| mov #__NR_gettimeofday, r3 |
| trapa #0x12 |
| SYSCALL_INST_PAD |
| |
| mov.l @(4,r15), r0 |
| mov.w .L1k, r1 |
| dmulu.l r0, r1 /* Milli seconds to nano seconds. */ |
| mov.l @r9, r2 |
| mov.l @(4,r9), r3 |
| mov.l @r15, r0 |
| sts macl, r1 |
| sub r0, r2 |
| clrt |
| subc r1, r3 |
| bf 5f |
| mov.l .L1g, r1 |
| add r1, r3 |
| add #-1, r2 |
| 5: |
| cmp/pz r2 |
| bf/s 6f /* Time is already up. */ |
| mov #ETIMEDOUT, r0 |
| |
| /* Store relative timeout. */ |
| mov.l r2, @r15 |
| mov.l r3, @(4,r15) |
| |
| .LcleanupSTART: |
| mov.l .Lenable0, r1 |
| bsrf r1 |
| nop |
| .Lenable0b: |
| mov r0, r10 |
| |
| mov r8, r4 |
| #if FUTEX_WAIT == 0 |
| mov.l @(PRIVATE,r8), r5 |
| #else |
| mov.l @(PRIVATE,r8), r5 |
| mov #FUTEX_WAIT, r0 |
| or r0, r5 |
| #endif |
| mov #0, r6 |
| mov r15, r7 |
| mov #SYS_futex, r3 |
| extu.b r3, r3 |
| trapa #0x14 |
| SYSCALL_INST_PAD |
| |
| mov.l .Ldisable0, r1 |
| mov r10, r4 |
| bsrf r1 |
| mov r0, r10 |
| .Ldisable0b: |
| mov r10, r0 |
| .LcleanupEND: |
| |
| tst r0, r0 |
| bt 9f |
| cmp/eq #-EWOULDBLOCK, r0 |
| bf 3f |
| 9: |
| mov.l @r8, r0 |
| 8: |
| tst r0, r0 |
| bt 7b |
| |
| mov r0, r3 |
| mov r0, r4 |
| add #-1, r3 |
| CMPXCHG (r4, @r8, r3, r2) |
| bf/s 8b |
| mov r2, r0 |
| |
| DEC (@(NWAITERS,r8), r2) |
| mov #0, r0 |
| |
| 10: |
| cfi_remember_state |
| add #8, r15 |
| cfi_adjust_cfa_offset (-8) |
| lds.l @r15+, pr |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (pr) |
| mov.l @r15+, r12 |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (r12) |
| mov.l @r15+, r10 |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (r10) |
| mov.l @r15+, r9 |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (r9) |
| mov.l @r15+, r8 |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (r8) |
| rts |
| nop |
| cfi_restore_state |
| |
| 3: |
| neg r0, r0 |
| 6: |
| mov r0, r10 |
| DEC (@(NWAITERS,r8), r2) |
| .Lerrno_exit: |
| mova .Lgot2, r0 |
| mov.l .Lgot2, r12 |
| add r0, r12 |
| |
| mov.l .Lerrno2, r0 |
| stc gbr, r1 |
| mov.l @(r0, r12), r0 |
| bra .Lexit |
| add r1, r0 |
| .align 2 |
| .Lerrno2: |
| .long errno@GOTTPOFF |
| .Lexit: |
| mov.l r10, @r0 |
| bra 10b |
| mov #-1, r0 |
| |
| .L1k: |
| .word 1000 |
| .align 2 |
| .L1g: |
| .long 1000000000 |
| .Lgot2: |
| .long _GLOBAL_OFFSET_TABLE_ |
| .Lenable0: |
| .long __pthread_enable_asynccancel-.Lenable0b |
| .Ldisable0: |
| .long __pthread_disable_asynccancel-.Ldisable0b |
| .size sem_timedwait,.-sem_timedwait |
| |
| .type sem_wait_cleanup,@function |
| sem_wait_cleanup: |
| DEC (@(NWAITERS,r8), r2) |
| .LcallUR: |
| mov.l .Lresume, r1 |
| #ifdef PIC |
| add r12, r1 |
| #endif |
| jsr @r1 |
| nop |
| sleep |
| |
| .align 2 |
| .Lresume: |
| #ifdef PIC |
| .long _Unwind_Resume@GOTOFF |
| #else |
| .long _Unwind_Resume |
| #endif |
| .LENDCODE: |
| cfi_endproc |
| .size sem_wait_cleanup,.-sem_wait_cleanup |
| |
| |
| .section .gcc_except_table,"a",@progbits |
| .LexceptSTART: |
| .byte DW_EH_PE_omit ! @LPStart format (omit) |
| .byte DW_EH_PE_omit ! @TType format (omit) |
| .byte DW_EH_PE_uleb128 ! call-site format |
| .uleb128 .Lcstend-.Lcstbegin |
| .Lcstbegin: |
| .uleb128 .LcleanupSTART-.LSTARTCODE |
| .uleb128 .LcleanupEND-.LcleanupSTART |
| .uleb128 sem_wait_cleanup-.LSTARTCODE |
| .uleb128 0 |
| .uleb128 .LcallUR-.LSTARTCODE |
| .uleb128 .LENDCODE-.LcallUR |
| .uleb128 0 |
| .uleb128 0 |
| .Lcstend: |
| |
| #ifdef SHARED |
| .hidden DW.ref.__gcc_personality_v0 |
| .weak DW.ref.__gcc_personality_v0 |
| .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits |
| .align 4 |
| .type DW.ref.__gcc_personality_v0, @object |
| .size DW.ref.__gcc_personality_v0, 4 |
| DW.ref.__gcc_personality_v0: |
| .long __gcc_personality_v0 |
| #endif |
