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Merge pull request #1382 from Sonicadvance1/LLVM-disasm

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Implements LLVM based disassembler for the debugger.
This commit is contained in:
skidau
2014-10-26 13:46:01 +11:00
parent 1078d78a6c cb10bef9a4
commit 38acd4d4bf
5 changed files with 111 additions and 3 deletions
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2
Source/Core/DolphinWX/CMakeLists.txt
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@ -178,7 +178,7 @@ if(ANDROID)
set(CPACK_PACKAGE_EXECUTABLES ${CPACK_PACKAGE_EXECUTABLES} ${DOLPHIN_EXE})
elseif(wxWidgets_FOUND)
add_executable(${DOLPHIN_EXE} ${SRCS} ${GUI_SRCS})
target_link_libraries(${DOLPHIN_EXE} ${LIBS} ${WXLIBS})
target_link_libraries(${DOLPHIN_EXE} ${LIBS} ${WXLIBS} ${LLVM_LIBRARIES})
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
include(BundleUtilities)
set(BUNDLE_PATH ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${DOLPHIN_EXE}.app)

78
Source/Core/DolphinWX/Debugger/JitWindow.cpp
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@ -7,6 +7,14 @@
#include <disasm.h> // Bochs
#include <sstream>
#if defined(HAS_LLVM)
// PowerPC.h defines PC.
// This conflicts with a function that has an argument named PC
#undef PC
#include <llvm-c/Disassembler.h>
#include <llvm-c/Target.h>
#endif
#include <wx/button.h>
#include <wx/chartype.h>
#include <wx/defs.h>
@ -33,6 +41,68 @@
#include "DolphinWX/WxUtils.h"
#include "DolphinWX/Debugger/JitWindow.h"
#if defined(HAS_LLVM)
// This class declaration should be in the header
// Due to the conflict with the PC define and the function with PC as an argument
// it has to be in this file instead.
// Once that conflict is resolved this can be moved to the header
class HostDisassemblerLLVM : public HostDisassembler
{
public:
HostDisassemblerLLVM(const std::string host_disasm);
~HostDisassemblerLLVM()
{
if (m_can_disasm)
LLVMDisasmDispose(m_llvm_context);
}
private:
bool m_can_disasm;
LLVMDisasmContextRef m_llvm_context;
std::string DisassembleHostBlock(const u8* code_start, const u32 code_size, u32* host_instructions_count) override;
};
HostDisassemblerLLVM::HostDisassemblerLLVM(const std::string host_disasm)
: m_can_disasm(false)
{
LLVMInitializeAllTargetInfos();
LLVMInitializeAllTargetMCs();
LLVMInitializeAllDisassemblers();
m_llvm_context = LLVMCreateDisasm(host_disasm.c_str(), nullptr, 0, 0, nullptr);
// Couldn't create llvm context
if (!m_llvm_context)
return;
LLVMSetDisasmOptions(m_llvm_context,
LLVMDisassembler_Option_AsmPrinterVariant |
LLVMDisassembler_Option_PrintLatency);
m_can_disasm = true;
}
std::string HostDisassemblerLLVM::DisassembleHostBlock(const u8* code_start, const u32 code_size, u32 *host_instructions_count)
{
if (!m_can_disasm)
return "(No LLVM context)";
u64 disasmPtr = (u64)code_start;
const u8 *end = code_start + code_size;
std::ostringstream x86_disasm;
while ((u8*)disasmPtr < end)
{
char inst_disasm[256];
disasmPtr += LLVMDisasmInstruction(m_llvm_context, (u8*)disasmPtr, (u64)(end - disasmPtr), (u64)disasmPtr, inst_disasm, 256);
x86_disasm << inst_disasm << std::endl;
(*host_instructions_count)++;
}
return x86_disasm.str();
}
#endif
std::string HostDisassembler::DisassembleBlock(u32* address, u32* host_instructions_count, u32* code_size)
{
if (!jit)
@ -143,8 +213,14 @@ CJitWindow::CJitWindow(wxWindow* parent, wxWindowID id, const wxPoint& pos,
sizerSplit->Fit(this);
sizerBig->Fit(this);
#ifdef _M_X86
#if defined(_M_X86) && defined(HAS_LLVM)
m_disassembler.reset(new HostDisassemblerLLVM("x86_64-none-unknown"));
#elif defined(_M_X86)
m_disassembler.reset(new HostDisassemblerX86());
#elif defined(_M_ARM_64) && defined(HAS_LLVM)
m_disassembler.reset(new HostDisassemblerLLVM("aarch64-none-unknown"));
#elif defined(_M_ARM_32) && defined(HAS_LLVM)
m_disassembler.reset(new HostDisassemblerLLVM("armv7-none-unknown"));
#else
m_disassembler.reset(new HostDisassembler());
#endif

2
Source/Core/DolphinWX/Debugger/JitWindow.h
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@ -39,7 +39,7 @@ public:
std::string DisassembleBlock(u32* address, u32* host_instructions_count, u32* code_size);
private:
virtual std::string DisassembleHostBlock(const u8* code_start, const u32 code_size, u32* host_instructions_count) { return ""; }
virtual std::string DisassembleHostBlock(const u8* code_start, const u32 code_size, u32* host_instructions_count) { return "(No disassembler)"; }
};
class HostDisassemblerX86 : public HostDisassembler