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/* $NetBSD: reloc.h,v 1.4 1994/10/26 21:09:59 cgd 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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
*/
/*
* 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_pmax {
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_pmax
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