From 738f91a57da7c129d1ee85b7abbf6858f8669ee3 Mon Sep 17 00:00:00 2001 From: MerryMage Date: Sat, 27 Jan 2018 15:16:39 +0000 Subject: memory: Replace all memory hooking with Special regions --- src/core/memory_hook.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 src/core/memory_hook.h (limited to 'src/core/memory_hook.h') diff --git a/src/core/memory_hook.h b/src/core/memory_hook.h new file mode 100644 index 000000000..feebd850a --- /dev/null +++ b/src/core/memory_hook.h @@ -0,0 +1,46 @@ +// Copyright 2016 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include +#include +#include "common/common_types.h" + +namespace Memory { + +/** + * Memory hooks have two purposes: + * 1. To allow reads and writes to a region of memory to be intercepted. This is used to implement + * texture forwarding and memory breakpoints for debugging. + * 2. To allow for the implementation of MMIO devices. + * + * A hook may be mapped to multiple regions of memory. + * + * If a boost::none or false is returned from a function, the read/write request is passed through + * to the underlying memory region. + */ +class MemoryHook { +public: + virtual ~MemoryHook() = default; + + virtual boost::optional IsValidAddress(VAddr addr) = 0; + + virtual boost::optional Read8(VAddr addr) = 0; + virtual boost::optional Read16(VAddr addr) = 0; + virtual boost::optional Read32(VAddr addr) = 0; + virtual boost::optional Read64(VAddr addr) = 0; + + virtual bool ReadBlock(VAddr src_addr, void* dest_buffer, size_t size) = 0; + + virtual bool Write8(VAddr addr, u8 data) = 0; + virtual bool Write16(VAddr addr, u16 data) = 0; + virtual bool Write32(VAddr addr, u32 data) = 0; + virtual bool Write64(VAddr addr, u64 data) = 0; + + virtual bool WriteBlock(VAddr dest_addr, const void* src_buffer, size_t size) = 0; +}; + +using MemoryHookPointer = std::shared_ptr; +} // namespace Memory -- cgit v1.2.3