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38 lines
1.5 KiB
ArmAsm
38 lines
1.5 KiB
ArmAsm
/* Copyright (C) 2010-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <tcb-offsets.h>
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#define SAVE_PID \
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bsrl __m68k_read_tp@PLTPC ; /* Get the thread pointer. */ \
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movel %a0, %a1 ; /* Save TP for RESTORE_PID. */ \
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movel PID_OFFSET(%a1), %d0 ; /* Get the PID. */ \
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movel %d0, %d1 ; /* Save PID for RESTORE_PID. */ \
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negl %d0 ; /* Negate the PID. */ \
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bne 1f ; /* If it was zero... */ \
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movel #0x80000000, %d0 ; /* use 0x80000000 instead. */ \
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1: movel %d0, PID_OFFSET(%a1) ; /* Store the temporary PID. */
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#define RESTORE_PID \
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tstl %d0 ; \
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beq 1f ; /* If we are the parent... */ \
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movel %d1, PID_OFFSET(%a1) ; /* Restore the PID. */ \
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1:
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#include <sysdeps/unix/sysv/linux/m68k/vfork.S>
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