84 lines
3.5 KiB
D
84 lines
3.5 KiB
D
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/*
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* Copyright (c) 2019 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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* The contents of this file constitute Original Code as defined in and
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* are subject to the Apple Public Source License Version 1.1 (the
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* "License"). You may not use this file except in compliance with the
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* License. Please obtain a copy of the License at
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* http://www.apple.com/publicsource and read it before using this file.
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*
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* This 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 OR NON-INFRINGEMENT. Please see the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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enum ptrauth_key {
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ptrauth_key_asia = 0,
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ptrauth_key_asib = 1,
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ptrauth_key_asda = 2,
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ptrauth_key_asdb = 3,
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/* A process-independent key which can be used to sign code pointers.
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Signing and authenticating with this key is a no-op in processes
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which disable ABI pointer authentication. */
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ptrauth_key_process_independent_code = ptrauth_key_asia,
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/* A process-specific key which can be used to sign code pointers.
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Signing and authenticating with this key is enforced even in processes
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which disable ABI pointer authentication. */
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ptrauth_key_process_dependent_code = ptrauth_key_asib,
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/* A process-independent key which can be used to sign data pointers.
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Signing and authenticating with this key is a no-op in processes
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which disable ABI pointer authentication. */
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ptrauth_key_process_independent_data = ptrauth_key_asda,
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/* A process-specific key which can be used to sign data pointers.
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Signing and authenticating with this key is a no-op in processes
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which disable ABI pointer authentication. */
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ptrauth_key_process_dependent_data = ptrauth_key_asdb,
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/* The key used to sign C function pointers.
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The extra data is always 0. */
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ptrauth_key_function_pointer = ptrauth_key_process_independent_code,
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/* The key used to sign return addresses on the stack.
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The extra data is based on the storage address of the return address.
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On ARM64, that is always the storage address of the return address plus 8
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(or, in other words, the value of the stack pointer on function entry) */
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ptrauth_key_return_address = ptrauth_key_process_dependent_code,
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/* The key used to sign frame pointers on the stack.
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The extra data is based on the storage address of the frame pointer.
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On ARM64, that is always the storage address of the frame pointer plus 16
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(or, in other words, the value of the stack pointer on function entry) */
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ptrauth_key_frame_pointer = ptrauth_key_process_dependent_data,
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/* The key used to sign block function pointers, including:
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invocation functions,
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block object copy functions,
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block object destroy functions,
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__block variable copy functions, and
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__block variable destroy functions.
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The extra data is always the address at which the function pointer
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is stored.
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Note that block object pointers themselves (i.e. the direct
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representations of values of block-pointer type) are not signed. */
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ptrauth_key_block_function = ptrauth_key_asia,
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/* The key used to sign C++ v-table pointers.
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The extra data is always 0. */
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ptrauth_key_cxx_vtable_pointer = ptrauth_key_asda
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};
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