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https://github.com/dolphin-emu/dolphin.git
synced 2025-07-22 22:00:39 -06:00
HLE: Differentiate Address hooks from Symbol hooks
GeckoCodes require address hooks which don't correspond to any symbol in the symbol table. The hooks get deleted when repatching the game because they did not persist across calls to HLE::PatchFunctions.
This commit is contained in:
@ -2,6 +2,9 @@
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <map>
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#include "Common/CommonTypes.h"
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#include "Core/ConfigManager.h"
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@ -33,11 +36,12 @@ struct SPatch
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{
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char m_szPatchName[128];
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TPatchFunction PatchFunction;
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int type;
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int flags;
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HookType type;
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HookFlag flags;
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};
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static const SPatch OSPatches[] = {
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// Placeholder, OSPatches[0] is the "non-existent function" index
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{"FAKE_TO_SKIP_0", HLE_Misc::UnimplementedFunction, HLE_HOOK_REPLACE, HLE_TYPE_GENERIC},
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{"PanicAlert", HLE_Misc::HLEPanicAlert, HLE_HOOK_REPLACE, HLE_TYPE_DEBUG},
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@ -60,9 +64,10 @@ static const SPatch OSPatches[] = {
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{"___blank", HLE_OS::HLE_GeneralDebugPrint, HLE_HOOK_REPLACE, HLE_TYPE_DEBUG},
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{"__write_console", HLE_OS::HLE_write_console, HLE_HOOK_REPLACE,
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HLE_TYPE_DEBUG}, // used by sysmenu (+more?)
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{"GeckoCodehandler", HLE_Misc::GeckoCodeHandlerICacheFlush, HLE_HOOK_START, HLE_TYPE_GENERIC},
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{"GeckoCodehandler", HLE_Misc::GeckoCodeHandlerICacheFlush, HLE_HOOK_START, HLE_TYPE_FIXED},
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{"GeckoHandlerReturnTrampoline", HLE_Misc::GeckoReturnTrampoline, HLE_HOOK_REPLACE,
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HLE_TYPE_GENERIC},
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HLE_TYPE_FIXED},
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};
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static const SPatch OSBreakPoints[] = {
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@ -71,11 +76,12 @@ static const SPatch OSBreakPoints[] = {
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void Patch(u32 addr, const char* hle_func_name)
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{
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for (u32 i = 0; i < sizeof(OSPatches) / sizeof(SPatch); i++)
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for (u32 i = 1; i < ArraySize(OSPatches); ++i)
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{
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if (!strcmp(OSPatches[i].m_szPatchName, hle_func_name))
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{
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s_original_instructions[addr] = i;
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PowerPC::ppcState.iCache.Invalidate(addr);
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return;
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}
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}
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@ -83,15 +89,33 @@ void Patch(u32 addr, const char* hle_func_name)
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void PatchFunctions()
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{
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s_original_instructions.clear();
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for (u32 i = 0; i < sizeof(OSPatches) / sizeof(SPatch); i++)
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// Remove all hooks that aren't fixed address hooks
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for (auto i = s_original_instructions.begin(); i != s_original_instructions.end();)
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{
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if (OSPatches[i->second].flags != HLE_TYPE_FIXED)
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{
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PowerPC::ppcState.iCache.Invalidate(i->first);
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i = s_original_instructions.erase(i);
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}
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else
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{
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++i;
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}
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}
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for (u32 i = 1; i < ArraySize(OSPatches); ++i)
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{
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// Fixed hooks don't map to symbols
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if (OSPatches[i].flags == HLE_TYPE_FIXED)
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continue;
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Symbol* symbol = g_symbolDB.GetSymbolFromName(OSPatches[i].m_szPatchName);
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if (symbol)
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{
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for (u32 addr = symbol->address; addr < symbol->address + symbol->size; addr += 4)
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{
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s_original_instructions[addr] = i;
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PowerPC::ppcState.iCache.Invalidate(addr);
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}
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INFO_LOG(OSHLE, "Patching %s %08x", OSPatches[i].m_szPatchName, symbol->address);
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}
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@ -99,7 +123,7 @@ void PatchFunctions()
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if (SConfig::GetInstance().bEnableDebugging)
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{
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for (size_t i = 1; i < sizeof(OSBreakPoints) / sizeof(SPatch); i++)
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for (size_t i = 1; i < ArraySize(OSBreakPoints); ++i)
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{
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Symbol* symbol = g_symbolDB.GetSymbolFromName(OSPatches[i].m_szPatchName);
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if (symbol)
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@ -113,10 +137,15 @@ void PatchFunctions()
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// CBreakPoints::AddBreakPoint(0x8000D3D0, false);
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}
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void Clear()
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{
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s_original_instructions.clear();
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}
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void Execute(u32 _CurrentPC, u32 _Instruction)
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{
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unsigned int FunctionIndex = _Instruction & 0xFFFFF;
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if ((FunctionIndex > 0) && (FunctionIndex < (sizeof(OSPatches) / sizeof(SPatch))))
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if (FunctionIndex > 0 && FunctionIndex < ArraySize(OSPatches))
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{
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OSPatches[FunctionIndex].PatchFunction();
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}
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@ -154,15 +183,40 @@ bool IsEnabled(int flags)
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return true;
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}
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u32 UnPatch(const std::string& patchName)
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u32 UnPatch(const std::string& patch_name)
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{
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Symbol* symbol = g_symbolDB.GetSymbolFromName(patchName);
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auto* patch = std::find_if(std::begin(OSPatches), std::end(OSPatches), [&](const SPatch& patch) {
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return patch_name == patch.m_szPatchName;
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});
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if (patch == std::end(OSPatches))
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return 0;
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if (symbol)
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if (patch->type == HLE_TYPE_FIXED)
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{
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u32 patch_idx = static_cast<u32>(patch - OSPatches);
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u32 addr = 0;
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// Reverse search by OSPatch key instead of address
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for (auto i = s_original_instructions.begin(); i != s_original_instructions.end();)
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{
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if (i->second == patch_idx)
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{
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addr = i->first;
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PowerPC::ppcState.iCache.Invalidate(i->first);
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i = s_original_instructions.erase(i);
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}
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else
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{
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++i;
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}
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}
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return addr;
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}
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if (Symbol* symbol = g_symbolDB.GetSymbolFromName(patch_name))
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{
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for (u32 addr = symbol->address; addr < symbol->address + symbol->size; addr += 4)
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{
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s_original_instructions[addr] = 0;
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s_original_instructions.erase(addr);
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PowerPC::ppcState.iCache.Invalidate(addr);
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}
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return symbol->address;
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@ -171,4 +225,18 @@ u32 UnPatch(const std::string& patchName)
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return 0;
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}
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bool UnPatch(u32 addr, const std::string& name)
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{
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auto itr = s_original_instructions.find(addr);
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if (itr == s_original_instructions.end())
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return false;
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if (!name.empty() && name != OSPatches[itr->second].m_szPatchName)
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return false;
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s_original_instructions.erase(itr);
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PowerPC::ppcState.iCache.Invalidate(addr);
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return true;
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}
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} // end of namespace HLE
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