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- /*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
- * Reserved. This file contains Original Code and/or Modifications of
- * Original Code as defined in and that are subject to the Apple Public
- * Source License Version 1.1 (the "License"). You may not use this file
- * except in compliance with the License. Please obtain a copy of the
- * License at http://www.apple.com/publicsource and read it before using
- * this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /*
- * Relocation types used in the I860 implementation. Relocation entries for
- * things other than instructions use the same generic relocation as discribed
- * above and their r_type is RELOC_VANILLA. The rest of the relocation types
- * are for instructions. Since they are for instructions the r_address field
- * indicates the 32 bit instruction that the relocation is to be preformed on.
- * The fields r_pcrel and r_length are ignored for non-RELOC_VANILLA r_types
- * except RELOC_SPLIT0 as discribed below.
- */
- enum reloc_type_i860
- {
- I860_RELOC_VANILLA, /* generic relocation as discribed above */
-
- I860_RELOC_PAIR, /* Only follows a I860_RELOC_HIGH or a
- * I860_RELOC_HIGHADJ and only the r_address has any
- * meaning.
- */
- I860_RELOC_HIGH, /* The low 16 bits of the instruction contains the high
- * 16 bits of the item being refered to. This
- * relocation type must be followed by a I860_RELOC_PAIR
- * relocation type. The low 16 bits of the item being
- * refered to is stored in the r_address of the
- * I860_RELOC_PAIR entry.
- */
- I860_RELOC_LOW0, /* For all of these the low 16 bits of the instruction*/
- I860_RELOC_LOW1, /* (minus the low 0, 1, 2, 3, or 4 bits) contain the */
- I860_RELOC_LOW2, /* low 16 bits of the item being refered to. The bits*/
- I860_RELOC_LOW3, /* of the reference that are missing are 0 and the */
- I860_RELOC_LOW4, /* bits in the instruction are part of the encoding of*/
- /* instruction. The resulting low 16 bits of the item*/
- /* being refered to is sign extended to 32 bits. */
-
- I860_RELOC_SPLIT0, /* For all of these the bits 20-14 and bits 10-0 of */
- I860_RELOC_SPLIT1, /* the instruction (minus the low 0, 1 or 2 bits) */
- I860_RELOC_SPLIT2, /* contain the low 16 bits of the item to being */
- /* refered to. The bits of the reference that are */
- /* missing are 0 and the bits of the instruction are */
- /* part of the encoding of the instruction. The */
- /* resulting low 16 bits of the item being relocated */
- /* is sign extened to 32 bits. A special case of the */
- /* I860_RELOC_SPLIT0 is when r_pcrel is non-zero (for */
- /* branch displacements). In this case the 16 bits */
- /* from the instruction is a 32 bit word displacement.*/
-
- I860_RELOC_HIGHADJ, /* Same as the RELOC_HIGH except the low 16 bits and the
- * high 16 bits are added together with the low 16 bits
- * sign extened first. This means if bit 15 of the low
- * 16 bits is set the high 16 bits stored in the
- * instruction will be adjusted.
- */
- I860_RELOC_BRADDR, /* The low 26 bits of the instruction is a 32 bit
- * word displacement from the pc to the item to being
- * refered to.
- */
- I860_RELOC_SECTDIFF /* a PAIR follows with subtract symbol value */
- };
-