diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/m68k/nptl/vfork.S')
-rw-r--r-- | ports/sysdeps/unix/sysv/linux/m68k/nptl/vfork.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/m68k/nptl/vfork.S b/ports/sysdeps/unix/sysv/linux/m68k/nptl/vfork.S new file mode 100644 index 0000000000..d8c307d2fb --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/m68k/nptl/vfork.S @@ -0,0 +1,37 @@ +/* Copyright (C) 2010 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010. + + 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 <tcb-offsets.h> + +#define SAVE_PID \ + bsrl __m68k_read_tp@PLTPC ; /* Get the thread pointer. */ \ + movel %a0, %a1 ; /* Save TP for RESTORE_PID. */ \ + movel PID_OFFSET(%a1), %d0 ; /* Get the PID. */ \ + movel %d0, %d1 ; /* Save PID for RESTORE_PID. */ \ + negl %d0 ; /* Negate the PID. */ \ + bne 1f ; /* If it was zero... */ \ + movel #0x80000000, %d0 ; /* use 0x80000000 instead. */ \ +1: movel %d0, PID_OFFSET(%a1) ; /* Store the temporary PID. */ + +#define RESTORE_PID \ + tstl %d0 ; \ + beq 1f ; /* If we are the parent... */ \ + movel %d1, PID_OFFSET(%a1) ; /* Restore the PID. */ \ +1: + +#include <sysdeps/unix/sysv/linux/m68k/vfork.S> |