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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -58,4 +58,5 @@ ipch/ | |
| # Visual Studio profiler | ||
| *.psess | ||
| *.vsp | ||
| *.vspx | ||
| *.vspx | ||
| *.opendb | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,4 +1,4 @@ | ||
| #include "StdAfx.h" | ||
| #include "stdafx.h" | ||
| #include "AnimationFile.h" | ||
| #include <fstream> | ||
| #include <iostream> | ||
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14 changes: 12 additions & 2 deletions
14
SA2ModLoader/LandTableInfo.cpp → libmodutils/LandTableInfo.cpp
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| #include "stdafx.h" | ||
| #include "Trampoline.h" | ||
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| #include <Windows.h> | ||
| #include <exception> | ||
| #include <ninja.h> // for typedefs | ||
| #include <ModLoader/MemAccess.h> | ||
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| /// <summary> | ||
| /// Initializes a new <see cref="Trampoline" />, allowing you to replace functions and still call the original code. | ||
| /// </summary> | ||
| /// <param name="start">Start offset (address of function).</param> | ||
| /// <param name="end">End offset.</param> | ||
| /// <param name="func">Your detour function.</param> | ||
| Trampoline::Trampoline(size_t start, size_t end, DetourFunction func) : | ||
| target(nullptr), detour(nullptr), codeData(nullptr), originalSize(0), codeSize(0) | ||
| { | ||
| if (start > end) | ||
| throw std::exception("Start address cannot exceed end address."); | ||
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| if (end - start < 5) | ||
| throw std::exception("Length cannot be less than 5 bytes."); | ||
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| target = (void*)start; | ||
| detour = func; | ||
| originalSize = end - start; | ||
| codeSize = originalSize + 5; | ||
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| // Copy original instructions | ||
| codeData = VirtualAlloc(nullptr, codeSize, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE); | ||
| if (codeData == nullptr) | ||
| throw std::exception("VirtualAlloc failure"); | ||
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| // ReadProcessMemory maybe? | ||
| memcpy(codeData, target, originalSize); | ||
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| // Append jump (terribly) | ||
| WriteJump((&((Uint8*)codeData)[originalSize]), (void*)end); | ||
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| // NOP | ||
| std::vector<Uint8> nop(originalSize, 0x90); | ||
| WriteData(target, nop.data(), nop.size()); | ||
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| // Jump | ||
| WriteJump(target, func); | ||
| } | ||
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| Trampoline::~Trampoline() | ||
| { | ||
| if (codeData) | ||
| VirtualFree(codeData, codeSize, MEM_DECOMMIT); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| #pragma once | ||
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| #include <vector> | ||
| #include <windef.h> | ||
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| typedef void(*DetourFunction)(void); | ||
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| // TODO: Better documentation | ||
| // TODO: Clearer member names | ||
| // TODO: Code restoration | ||
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| class Trampoline | ||
| { | ||
| private: | ||
| void* target; | ||
| DetourFunction detour; | ||
| LPVOID codeData; | ||
| size_t originalSize; | ||
| size_t codeSize; | ||
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| public: | ||
| /// <summary> | ||
| /// Initializes a new <see cref="Trampoline" />, allowing you to replace functions and still call the original code. | ||
| /// </summary> | ||
| /// <param name="start">Start offset (address of function).</param> | ||
| /// <param name="end">End offset.</param> | ||
| /// <param name="func">Your detour function.</param> | ||
| Trampoline(size_t start, size_t end, DetourFunction func); | ||
| ~Trampoline(); | ||
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| // Pointer to original code. | ||
| LPVOID Target() const | ||
| { | ||
| return codeData; | ||
| } | ||
| // Pointer to your detour. | ||
| void* Detour() const | ||
| { | ||
| return detour; | ||
| } | ||
| // Original data size. | ||
| size_t OriginalSize() const | ||
| { | ||
| return originalSize; | ||
| } | ||
| // Size of Target including appended jump to remaining original code. | ||
| size_t CodeSize() const | ||
| { | ||
| return codeSize; | ||
| } | ||
| }; |
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