From 93da8e0abfcdcc6e3cb5488a0db12373429f1377 Mon Sep 17 00:00:00 2001 From: bunnei Date: Sat, 2 Mar 2019 15:20:28 -0500 Subject: core: Move PageTable struct into Common. --- src/common/memory_hook.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 src/common/memory_hook.h (limited to 'src/common/memory_hook.h') diff --git a/src/common/memory_hook.h b/src/common/memory_hook.h new file mode 100644 index 000000000..adaa4c2c5 --- /dev/null +++ b/src/common/memory_hook.h @@ -0,0 +1,47 @@ +// 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 Common { + +/** + * 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 std::nullopt or false is returned from a function, the read/write request is passed through + * to the underlying memory region. + */ +class MemoryHook { +public: + virtual ~MemoryHook(); + + virtual std::optional IsValidAddress(VAddr addr) = 0; + + virtual std::optional Read8(VAddr addr) = 0; + virtual std::optional Read16(VAddr addr) = 0; + virtual std::optional Read32(VAddr addr) = 0; + virtual std::optional Read64(VAddr addr) = 0; + + virtual bool ReadBlock(VAddr src_addr, void* dest_buffer, std::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, std::size_t size) = 0; +}; + +using MemoryHookPointer = std::shared_ptr; +} // namespace Common -- cgit v1.2.3