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7a3e2e877a
Hurd is expected to use the same thread ABI as Linux. Reviewed-by: Michael Jeanson <mjeanson@efficios.com>
41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/* __thread_pointer definition. hppa version.
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Copyright (C) 2021-2025 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
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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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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_THREAD_POINTER_H
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#define _SYS_THREAD_POINTER_H
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static inline void *
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__thread_pointer (void)
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{
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void *__thread_register;
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__asm__ ("mfctl %%cr27, %0" : "=r" (__thread_register));
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return __thread_register;
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}
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/* We write to cr27, clobber r26 as the input argument, and clobber
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r31 as the link register. */
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static inline void
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__set_thread_pointer(void *__thread_pointer)
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{
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asm ( "ble 0xe0(%%sr2, %%r0)\n\t"
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"copy %0, %%r26"
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: : "r" (__thread_pointer) : "r26", "r31" );
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}
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#endif /* _SYS_THREAD_POINTER_H */
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