mirror of git://sourceware.org/git/glibc.git
38 lines
1.7 KiB
ArmAsm
38 lines
1.7 KiB
ArmAsm
/* Copyright (C) 2005-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 License as
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published by the Free Software Foundation; either version 2.1 of the
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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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/* Save the PID value. */
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#define SAVE_PID \
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mrs x2, tpidr_el0; \
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sub x2, x2, #PTHREAD_SIZEOF; \
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ldr w3, [x2, #PTHREAD_PID_OFFSET]; \
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cmp w3, #0; \
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mov w0, #0x80000000; \
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csneg w0, w0, w3, eq; \
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str w0, [x2, #PTHREAD_PID_OFFSET]
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/* Restore the old PID value in the parent. */
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#define RESTORE_PID \
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cbz x0, 1f; /* If we are the parent... */ \
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str w3, [x2, #PTHREAD_PID_OFFSET]; /* restore the saved PID. */ \
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1:
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#include "../vfork.S"
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