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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 19:01:57 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 19:01:57 +0000 |
| commit | cab56836b146bc129f1ad43f0393d95a9deca63a (patch) | |
| tree | 4f4e655319bbac78fca170da05275c127429b460 /sysdeps/unix/sysv/linux/aarch64/vfork.S | |
| parent | 04ac1241a4cd004872282c2c82ec37fa33925292 (diff) | |
| parent | 82dd75a7f436a19047325d62182590c9f9e23a78 (diff) | |
Merge branch 't/tls' into refs/top-bases/t/tls-threadvar
Diffstat (limited to 'sysdeps/unix/sysv/linux/aarch64/vfork.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/aarch64/vfork.S | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/sysdeps/unix/sysv/linux/aarch64/vfork.S b/sysdeps/unix/sysv/linux/aarch64/vfork.S index 577895eeb2..9986fbddf5 100644 --- a/sysdeps/unix/sysv/linux/aarch64/vfork.S +++ b/sysdeps/unix/sysv/linux/aarch64/vfork.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1999-2016 Free Software Foundation, Inc. +/* Copyright (C) 1999-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -27,27 +27,10 @@ ENTRY (__vfork) - /* Save the TCB-cached PID away in w3, and then negate the TCB - field. But if it's zero, set it to 0x80000000 instead. See - raise.c for the logic that relies on this value. */ - mrs x2, tpidr_el0 - sub x2, x2, #PTHREAD_SIZEOF - ldr w3, [x2, #PTHREAD_PID_OFFSET] - mov w1, #0x80000000 - negs w0, w3 - csel w0, w1, w0, eq - str w0, [x2, #PTHREAD_PID_OFFSET] - mov x0, #0x4111 /* CLONE_VM | CLONE_VFORK | SIGCHLD */ mov x1, sp DO_CALL (clone, 2) - /* Restore the original value of the TCB cache of the PID, if we're - the parent. But in the child (syscall return value equals zero), - leave things as they are. */ - cbz x0, 1f - str w3, [x2, #PTHREAD_PID_OFFSET] -1: cmn x0, #4095 b.cs .Lsyscall_error RET |