/*      $NetBSD: reloc.h,v 1.10 2020/07/26 08:08:41 simonb Exp $        */

/*-
* Copyright (c) 1992, 1993
*      The Regents of the University of California.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*      @(#)reloc.h     8.1 (Berkeley) 6/10/93
*
* from: Header: reloc.h,v 1.6 92/06/20 09:59:37 torek Exp
*/

#ifndef __MIPS_RELOC_H__
#define __MIPS_RELOC_H__
/*
* MIPS relocation types.
*/
enum reloc_type {
       MIPS_RELOC_32,          /* 32-bit absolute */
       MIPS_RELOC_JMP,         /* 26-bit absolute << 2 | high 4 bits of pc */
       MIPS_RELOC_WDISP16,     /* 16-bit signed pc-relative << 2 */
       MIPS_RELOC_HI16,        /* 16-bit absolute << 16 */
       MIPS_RELOC_HI16_S,      /* 16-bit absolute << 16 (+1 if needed) */
       MIPS_RELOC_LO16         /* 16-bit absolute */
};

/*
* MIPS relocation info.
*
* Symbol-relative relocation is done by:
*      1. start with the value r_addend,
*      2. locate the appropriate symbol and if defined, add symbol value,
*      3. if pc relative, subtract pc,
*      4. if the reloc_type is MIPS_RELOC_HI16_S and the result bit 15 is set,
*              add 0x00010000,
*      5. shift down 2 or 16 if necessary.
* The resulting value is then to be stuffed into the appropriate bits
* in the object (the low 16, or the low 26 bits).
*/
struct reloc_info_mips {
       u_long  r_address;      /* relocation addr (offset in segment) */
       u_int   r_index:24,     /* segment (r_extern==0) or symbol index */
               r_extern:1,     /* if set, r_index is symbol index */
               :2;             /* unused */
       enum reloc_type r_type:5; /* relocation type, from above */
       long    r_addend;       /* value to add to symbol value */
};

#define relocation_info reloc_info_mips
#endif /* __MIPS_RELOC_H__ */