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-rw-r--r--src/core/hle/shared_page.cpp80
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diff --git a/src/core/hle/shared_page.cpp b/src/core/hle/shared_page.cpp
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+++ b/src/core/hle/shared_page.cpp
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+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/common_types.h"
+#include "common/log.h"
+
+#include "core/core.h"
+#include "core/mem_map.h"
+#include "core/hle/config_mem.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+namespace SharedPage {
+
+// helper macro to properly align structure members.
+// Calling INSERT_PADDING_BYTES will add a new member variable with a name like "pad121",
+// depending on the current source line to make sure variable names are unique.
+#define INSERT_PADDING_BYTES_HELPER1(x, y) x ## y
+#define INSERT_PADDING_BYTES_HELPER2(x, y) INSERT_PADDING_BYTES_HELPER1(x, y)
+#define INSERT_PADDING_BYTES(num_words) u8 INSERT_PADDING_BYTES_HELPER2(pad, __LINE__)[(num_words)]
+
+// see http://3dbrew.org/wiki/Configuration_Memory#Shared_Memory_Page_For_ARM11_Processes
+
+#pragma pack(1)
+struct DateTime {
+ u64 date_time; // 0x0
+ u64 update_tick; // 0x8
+ INSERT_PADDING_BYTES(0x20 - 0x10); // 0x10
+};
+
+struct SharedPageDef {
+ // most of these names are taken from the 3dbrew page linked above.
+ u32 date_time_selector; // 0x0
+ u8 running_hw; // 0x4
+ u8 mcu_hw_info; // 0x5: don't know what the acronyms mean
+ INSERT_PADDING_BYTES(0x20 - 0x6); // 0x6
+ DateTime date_time_0; // 0x20
+ DateTime date_time_1; // 0x40
+ u8 wifi_macaddr[6]; // 0x60
+ u8 wifi_unknown1; // 0x66: 3dbrew says these are "Likely wifi hardware related"
+ u8 wifi_unknown2; // 0x67
+ INSERT_PADDING_BYTES(0x80 - 0x68); // 0x68
+ float sliderstate_3d; // 0x80
+ u8 ledstate_3d; // 0x84
+ INSERT_PADDING_BYTES(0xA0 - 0x85); // 0x85
+ u64 menu_title_id; // 0xA0
+ u64 active_menu_title_id; // 0xA8
+ INSERT_PADDING_BYTES(0x1000 - 0xB0); // 0xB0
+};
+#pragma pack()
+
+static_assert(sizeof(DateTime) == 0x20, "Datetime size is wrong");
+static_assert(sizeof(SharedPageDef) == Memory::SHARED_PAGE_SIZE, "Shared page structure size is wrong");
+
+static SharedPageDef shared_page;
+
+template <typename T>
+inline void Read(T &var, const u32 addr) {
+ u32 offset = addr - Memory::SHARED_PAGE_VADDR;
+ var = *(reinterpret_cast<T*>(((uintptr_t)&shared_page) + offset));
+}
+
+// Explicitly instantiate template functions because we aren't defining this in the header:
+template void Read<u64>(u64 &var, const u32 addr);
+template void Read<u32>(u32 &var, const u32 addr);
+template void Read<u16>(u16 &var, const u32 addr);
+template void Read<u8>(u8 &var, const u32 addr);
+
+void Set3DSlider(float amount) {
+ shared_page.sliderstate_3d = amount;
+ shared_page.ledstate_3d = (amount == 0.0f); // off when non-zero
+}
+
+void Init() {
+ shared_page.running_hw = 0x1; // product
+ Set3DSlider(0.0f);
+}
+
+} // namespace