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69 lines
2.8 KiB
C
69 lines
2.8 KiB
C
/*
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* Copyright (c) 2010 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#ifndef _MACHO_ARM64_RELOC_H_
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#define _MACHO_ARM64_RELOC_H_
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/*
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* Relocation types used in the arm64 implementation.
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*/
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enum reloc_type_arm64
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{
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ARM64_RELOC_UNSIGNED, // for pointers
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ARM64_RELOC_SUBTRACTOR, // must be followed by a ARM64_RELOC_UNSIGNED
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ARM64_RELOC_BRANCH26, // a B/BL instruction with 26-bit displacement
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ARM64_RELOC_PAGE21, // pc-rel distance to page of target
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ARM64_RELOC_PAGEOFF12, // offset within page, scaled by r_length
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ARM64_RELOC_GOT_LOAD_PAGE21, // pc-rel distance to page of GOT slot
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ARM64_RELOC_GOT_LOAD_PAGEOFF12, // offset within page of GOT slot,
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// scaled by r_length
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ARM64_RELOC_POINTER_TO_GOT, // for pointers to GOT slots
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ARM64_RELOC_TLVP_LOAD_PAGE21, // pc-rel distance to page of TLVP slot
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ARM64_RELOC_TLVP_LOAD_PAGEOFF12, // offset within page of TLVP slot,
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// scaled by r_length
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ARM64_RELOC_ADDEND, // must be followed by PAGE21 or PAGEOFF12
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// An arm64e authenticated pointer.
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//
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// Represents a pointer to a symbol (like ARM64_RELOC_UNSIGNED).
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// Additionally, the resulting pointer is signed. The signature is
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// specified in the target location: the addend is restricted to the lower
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// 32 bits (instead of the full 64 bits for ARM64_RELOC_UNSIGNED):
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//
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// |63|62|61-51|50-49| 48 |47 - 32|31 - 0|
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// | 1| 0| 0 | key | addr | discriminator | addend |
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//
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// The key is one of:
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// IA: 00 IB: 01
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// DA: 10 DB: 11
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//
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// The discriminator field is used as extra signature diversification.
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//
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// The addr field indicates whether the target address should be blended
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// into the discriminator.
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//
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ARM64_RELOC_AUTHENTICATED_POINTER,
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};
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#endif /* #ifndef _MACHO_ARM64_RELOC_H_ */
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