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//===------------------------ tysan_platform.h ----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of TypeSanitizer.
//
// Platform specific information for TySan.
//===----------------------------------------------------------------------===//
#ifndef TYSAN_PLATFORM_H
#define TYSAN_PLATFORM_H
namespace __tysan {
#if defined(__x86_64__) || SANITIZER_APPLE
struct Mapping {
static const uptr kShadowAddr = 0x010000000000ull;
static const uptr kAppAddr = 0x550000000000ull;
static const uptr kAppMemMsk = ~0x780000000000ull;
static const uptr kPtrShift = 3;
};
#elif defined(__aarch64__)
struct Mapping39 {
static const uptr kShadowAddr = 0x0800000000ull;
static const uptr kAppAddr = 0x5500000000ull;
static const uptr kAppMemMsk = ~0x7800000000ull;
static const uptr kPtrShift = 3;
};
struct Mapping42 {
static const uptr kShadowAddr = 0x10000000000ull;
static const uptr kAppAddr = 0x2aa00000000ull;
static const uptr kAppMemMsk = ~0x3c000000000ull;
static const uptr kPtrShift = 3;
};
struct Mapping48 {
static const uptr kShadowAddr = 0x0002000000000ull;
static const uptr kAppAddr = 0x0aaaa00000000ull;
static const uptr kAppMemMsk = ~0x0fff800000000ull;
static const uptr kPtrShift = 3;
};
#define TYSAN_RUNTIME_VMA 1
#else
#error "TySan not supported for this platform!"
#endif
#if TYSAN_RUNTIME_VMA
extern int vmaSize;
#endif
enum MappingType {
MAPPING_SHADOW_ADDR,
MAPPING_APP_ADDR,
MAPPING_APP_MASK,
MAPPING_PTR_SHIFT
};
template <typename Mapping, int Type> uptr MappingImpl(void) {
switch (Type) {
case MAPPING_SHADOW_ADDR:
return Mapping::kShadowAddr;
case MAPPING_APP_ADDR:
return Mapping::kAppAddr;
case MAPPING_APP_MASK:
return Mapping::kAppMemMsk;
case MAPPING_PTR_SHIFT:
return Mapping::kPtrShift;
}
}
template <int Type> uptr MappingArchImpl(void) {
#if defined(__aarch64__) && !SANITIZER_APPLE
switch (vmaSize) {
case 39:
return MappingImpl<Mapping39, Type>();
case 42:
return MappingImpl<Mapping42, Type>();
case 48:
return MappingImpl<Mapping48, Type>();
}
DCHECK(0);
return 0;
#else
return MappingImpl<Mapping, Type>();
#endif
}
ALWAYS_INLINE
uptr ShadowAddr() { return MappingArchImpl<MAPPING_SHADOW_ADDR>(); }
ALWAYS_INLINE
uptr AppAddr() { return MappingArchImpl<MAPPING_APP_ADDR>(); }
ALWAYS_INLINE
uptr AppMask() { return MappingArchImpl<MAPPING_APP_MASK>(); }
ALWAYS_INLINE
uptr PtrShift() { return MappingArchImpl<MAPPING_PTR_SHIFT>(); }
} // namespace __tysan
#endif
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