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https://github.com/patchzyy/wiicompiled
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patchzyy
49 lines
2.1 KiB
C++
49 lines
2.1 KiB
C++
#pragma once
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#include <atomic>
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#include <cstdint>
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namespace RecompMod {
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// Diagnostic-only, read by fatal reporters (unmapped access, executable-write, CPU dumps).
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// Defined here as `inline thread_local` with a constant initializer, not `extern thread_local`
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// in the .cpp: every indirect dispatch scopes this, so an out-of-line ctor/dtor would cost two
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// un-inlinable calls plus a register spill each for three instructions of work.
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inline thread_local uint32_t g_currentTranslatedExecutionAddress = 0;
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class ScopedTranslatedExecutionAddress {
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public:
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explicit ScopedTranslatedExecutionAddress(uint32_t address) noexcept
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: previous_(g_currentTranslatedExecutionAddress) {
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// Address 0 means "nothing new to report" - the enclosing scope's value
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// stays visible, and the unconditional restore below keeps nesting exact.
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if (address != 0) {
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g_currentTranslatedExecutionAddress = address;
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}
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}
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~ScopedTranslatedExecutionAddress() noexcept {
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g_currentTranslatedExecutionAddress = previous_;
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}
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ScopedTranslatedExecutionAddress(const ScopedTranslatedExecutionAddress&) = delete;
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ScopedTranslatedExecutionAddress& operator=(const ScopedTranslatedExecutionAddress&) = delete;
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private:
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uint32_t previous_ = 0;
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};
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inline constexpr uint32_t kExecutableWriteGuardPageShift = 12;
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inline constexpr uint32_t kExecutableWriteGuardPageCount = 1u << (32 - kExecutableWriteGuardPageShift);
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inline constexpr uint32_t kExecutableWriteGuardCoarsePageShift = 20;
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inline constexpr uint32_t kExecutableWriteGuardCoarsePageCount = 1u << (32 - kExecutableWriteGuardCoarsePageShift);
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inline constexpr uint32_t kExecutableWriteGuardMidPageShift = 16;
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inline constexpr uint32_t kExecutableWriteGuardMidPageCount = 1u << (32 - kExecutableWriteGuardMidPageShift);
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extern std::atomic<bool> g_executableWriteGuardEnabled;
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extern std::atomic<uint8_t> g_executableWriteGuardPages[kExecutableWriteGuardPageCount];
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extern std::atomic<uint8_t> g_executableWriteGuardCoarsePages[kExecutableWriteGuardCoarsePageCount];
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extern std::atomic<uint8_t> g_executableWriteGuardMidPages[kExecutableWriteGuardMidPageCount];
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} // namespace RecompMod
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