Blame sysdeps/hppa/bits/setjmp.h

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/* Copyright (C) 2000-2018 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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   <http://www.gnu.org/licenses/>.  */
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/* Define the machine-dependent type `jmp_buf'.  HPPA version.  */
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#ifndef _BITS_SETJMP_H
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#define _BITS_SETJMP_H	1
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#if !defined _SETJMP_H && !defined _PTHREAD_H
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# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
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#endif
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#ifndef	_ASM
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/* The entire jump buffer must be 168 bytes long and laid
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   out in exactly as follows for ABI consistency.
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   * 20 x 32-bit gprs, with 8-bytes of padding, arranged so:
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     - r3 (callee saves)
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     - 4 bytes of padding.
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     - r4-r18 (callee saves)
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     - r19 (PIC register)
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     - r27 (static link register)
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     - r30 (stcack pointer)
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     - r2 (return pointer)
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     - 4 bytes of padding.
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   * 10 x 64-bit fprs in this order:
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     - fr12-fr21 (callee saves)
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   Note: We have 8 bytes of free space for future uses.  */
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typedef union __jmp_buf_internal_tag
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  {
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    struct
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      {
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	int __r3;
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	int __pad0;
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	int __r4_r18[15];
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	int __r19;
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	int __r27;
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	int __sp;
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	int __rp;
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	int __pad1;
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	double __fr12_fr21[10];
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      } __jmp_buf;
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    /* Legacy definition. Ensures double alignment for fpsrs.  */
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    double __align[21];
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  } __jmp_buf[1];
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#endif
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#endif	/* bits/setjmp.h */