forked from OSchip/llvm-project
116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
//===-- dfsan_platform.h ----------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of DataFlowSanitizer.
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//
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// Platform specific information for DFSan.
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//===----------------------------------------------------------------------===//
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#ifndef DFSAN_PLATFORM_H
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#define DFSAN_PLATFORM_H
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namespace __dfsan {
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#if defined(__x86_64__)
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struct Mapping {
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static const uptr kShadowAddr = 0x10000;
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static const uptr kUnionTableAddr = 0x200000000000;
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static const uptr kAppAddr = 0x700000008000;
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static const uptr kShadowMask = ~0x700000000000;
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};
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#elif defined(__mips64)
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struct Mapping {
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static const uptr kShadowAddr = 0x10000;
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static const uptr kUnionTableAddr = 0x2000000000;
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static const uptr kAppAddr = 0xF000008000;
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static const uptr kShadowMask = ~0xF000000000;
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};
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#elif defined(__aarch64__)
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struct Mapping39 {
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static const uptr kShadowAddr = 0x10000;
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static const uptr kUnionTableAddr = 0x1000000000;
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static const uptr kAppAddr = 0x7000008000;
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static const uptr kShadowMask = ~0x7800000000;
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};
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struct Mapping42 {
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static const uptr kShadowAddr = 0x10000;
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static const uptr kUnionTableAddr = 0x8000000000;
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static const uptr kAppAddr = 0x3ff00008000;
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static const uptr kShadowMask = ~0x3c000000000;
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};
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struct Mapping48 {
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static const uptr kShadowAddr = 0x10000;
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static const uptr kUnionTableAddr = 0x8000000000;
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static const uptr kAppAddr = 0xffff00008000;
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static const uptr kShadowMask = ~0xfffff0000000;
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};
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extern int vmaSize;
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# define DFSAN_RUNTIME_VMA 1
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#else
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# error "DFSan not supported for this platform!"
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#endif
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enum MappingType {
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MAPPING_SHADOW_ADDR,
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MAPPING_UNION_TABLE_ADDR,
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MAPPING_APP_ADDR,
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MAPPING_SHADOW_MASK
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};
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template<typename Mapping, int Type>
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uptr MappingImpl(void) {
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switch (Type) {
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case MAPPING_SHADOW_ADDR: return Mapping::kShadowAddr;
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case MAPPING_UNION_TABLE_ADDR: return Mapping::kUnionTableAddr;
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case MAPPING_APP_ADDR: return Mapping::kAppAddr;
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case MAPPING_SHADOW_MASK: return Mapping::kShadowMask;
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}
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}
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template<int Type>
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uptr MappingArchImpl(void) {
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#ifdef __aarch64__
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switch (vmaSize) {
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case 39: return MappingImpl<Mapping39, Type>();
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case 42: return MappingImpl<Mapping42, Type>();
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case 48: return MappingImpl<Mapping48, Type>();
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}
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DCHECK(0);
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return 0;
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#else
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return MappingImpl<Mapping, Type>();
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#endif
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}
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ALWAYS_INLINE
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uptr ShadowAddr() {
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return MappingArchImpl<MAPPING_SHADOW_ADDR>();
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}
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ALWAYS_INLINE
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uptr UnionTableAddr() {
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return MappingArchImpl<MAPPING_UNION_TABLE_ADDR>();
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}
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ALWAYS_INLINE
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uptr AppAddr() {
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return MappingArchImpl<MAPPING_APP_ADDR>();
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}
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ALWAYS_INLINE
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uptr ShadowMask() {
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return MappingArchImpl<MAPPING_SHADOW_MASK>();
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}
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} // namespace __dfsan
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#endif
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