| //===-- Disassembler.cpp ----------------------------------------*- C++ -*-===// | |
| // | |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | |
| // See https://llvm.org/LICENSE.txt for license information. | |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |
| // | |
| //===----------------------------------------------------------------------===// | |
| #include "lldb/Core/Disassembler.h" | |
| #include "lldb/Core/AddressRange.h" | |
| #include "lldb/Core/Debugger.h" | |
| #include "lldb/Core/EmulateInstruction.h" | |
| #include "lldb/Core/Mangled.h" | |
| #include "lldb/Core/Module.h" | |
| #include "lldb/Core/ModuleList.h" | |
| #include "lldb/Core/PluginManager.h" | |
| #include "lldb/Core/SourceManager.h" | |
| #include "lldb/Host/FileSystem.h" | |
| #include "lldb/Interpreter/OptionValue.h" | |
| #include "lldb/Interpreter/OptionValueArray.h" | |
| #include "lldb/Interpreter/OptionValueDictionary.h" | |
| #include "lldb/Interpreter/OptionValueRegex.h" | |
| #include "lldb/Interpreter/OptionValueString.h" | |
| #include "lldb/Interpreter/OptionValueUInt64.h" | |
| #include "lldb/Symbol/Function.h" | |
| #include "lldb/Symbol/Symbol.h" | |
| #include "lldb/Symbol/SymbolContext.h" | |
| #include "lldb/Target/ExecutionContext.h" | |
| #include "lldb/Target/SectionLoadList.h" | |
| #include "lldb/Target/StackFrame.h" | |
| #include "lldb/Target/Target.h" | |
| #include "lldb/Target/Thread.h" | |
| #include "lldb/Utility/DataBufferHeap.h" | |
| #include "lldb/Utility/DataExtractor.h" | |
| #include "lldb/Utility/RegularExpression.h" | |
| #include "lldb/Utility/Status.h" | |
| #include "lldb/Utility/Stream.h" | |
| #include "lldb/Utility/StreamString.h" | |
| #include "lldb/Utility/Timer.h" | |
| #include "lldb/lldb-private-enumerations.h" | |
| #include "lldb/lldb-private-interfaces.h" | |
| #include "lldb/lldb-private-types.h" | |
| #include "llvm/ADT/Triple.h" | |
| #include "llvm/Support/Compiler.h" | |
| #include <cstdint> | |
| #include <cstring> | |
| #include <utility> | |
| #include <assert.h> | |
| #define DEFAULT_DISASM_BYTE_SIZE 32 | |
| using namespace lldb; | |
| using namespace lldb_private; | |
| DisassemblerSP Disassembler::FindPlugin(const ArchSpec &arch, | |
| const char *flavor, | |
| const char *plugin_name) { | |
| static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); | |
| Timer scoped_timer(func_cat, | |
| "Disassembler::FindPlugin (arch = %s, plugin_name = %s)", | |
| arch.GetArchitectureName(), plugin_name); | |
| DisassemblerCreateInstance create_callback = nullptr; | |
| if (plugin_name) { | |
| ConstString const_plugin_name(plugin_name); | |
| create_callback = PluginManager::GetDisassemblerCreateCallbackForPluginName( | |
| const_plugin_name); | |
| if (create_callback) { | |
| DisassemblerSP disassembler_sp(create_callback(arch, flavor)); | |
| if (disassembler_sp) | |
| return disassembler_sp; | |
| } | |
| } else { | |
| for (uint32_t idx = 0; | |
| (create_callback = PluginManager::GetDisassemblerCreateCallbackAtIndex( | |
| idx)) != nullptr; | |
| ++idx) { | |
| DisassemblerSP disassembler_sp(create_callback(arch, flavor)); | |
| if (disassembler_sp) | |
| return disassembler_sp; | |
| } | |
| } | |
| return DisassemblerSP(); | |
| } | |
| DisassemblerSP Disassembler::FindPluginForTarget(const TargetSP target_sp, | |
| const ArchSpec &arch, | |
| const char *flavor, | |
| const char *plugin_name) { | |
| if (target_sp && flavor == nullptr) { | |
| // FIXME - we don't have the mechanism in place to do per-architecture | |
| // settings. But since we know that for now we only support flavors on x86 | |
| // & x86_64, | |
| if (arch.GetTriple().getArch() == llvm::Triple::x86 || | |
| arch.GetTriple().getArch() == llvm::Triple::x86_64) | |
| flavor = target_sp->GetDisassemblyFlavor(); | |
| } | |
| return FindPlugin(arch, flavor, plugin_name); | |
| } | |
| static void ResolveAddress(const ExecutionContext &exe_ctx, const Address &addr, | |
| Address &resolved_addr) { | |
| if (!addr.IsSectionOffset()) { | |
| // If we weren't passed in a section offset address range, try and resolve | |
| // it to something | |
| Target *target = exe_ctx.GetTargetPtr(); | |
| if (target) { | |
| bool is_resolved = | |
| target->GetSectionLoadList().IsEmpty() ? | |
| target->GetImages().ResolveFileAddress(addr.GetOffset(), | |
| resolved_addr) : | |
| target->GetSectionLoadList().ResolveLoadAddress(addr.GetOffset(), | |
| resolved_addr); | |
| // We weren't able to resolve the address, just treat it as a raw address | |
| if (is_resolved && resolved_addr.IsValid()) | |
| return; | |
| } | |
| } | |
| resolved_addr = addr; | |
| } | |
| size_t Disassembler::Disassemble(Debugger &debugger, const ArchSpec &arch, | |
| const char *plugin_name, const char *flavor, | |
| const ExecutionContext &exe_ctx, | |
| SymbolContextList &sc_list, | |
| uint32_t num_instructions, | |
| bool mixed_source_and_assembly, | |
| uint32_t num_mixed_context_lines, | |
| uint32_t options, Stream &strm) { | |
| size_t success_count = 0; | |
| const size_t count = sc_list.GetSize(); | |
| SymbolContext sc; | |
| AddressRange range; | |
| const uint32_t scope = | |
| eSymbolContextBlock | eSymbolContextFunction | eSymbolContextSymbol; | |
| const bool use_inline_block_range = true; | |
| for (size_t i = 0; i < count; ++i) { | |
| if (!sc_list.GetContextAtIndex(i, sc)) | |
| break; | |
| for (uint32_t range_idx = 0; | |
| sc.GetAddressRange(scope, range_idx, use_inline_block_range, range); | |
| ++range_idx) { | |
| if (Disassemble(debugger, arch, plugin_name, flavor, exe_ctx, range, | |
| num_instructions, mixed_source_and_assembly, | |
| num_mixed_context_lines, options, strm)) { | |
| ++success_count; | |
| strm.EOL(); | |
| } | |
| } | |
| } | |
| return success_count; | |
| } | |
| bool Disassembler::Disassemble( | |
| Debugger &debugger, const ArchSpec &arch, const char *plugin_name, | |
| const char *flavor, const ExecutionContext &exe_ctx, ConstString name, | |
| Module *module, uint32_t num_instructions, bool mixed_source_and_assembly, | |
| uint32_t num_mixed_context_lines, uint32_t options, Stream &strm) { | |
| // If no name is given there's nothing to disassemble. | |
| if (!name) | |
| return false; | |
| const bool include_symbols = true; | |
| const bool include_inlines = true; | |
| // Find functions matching the given name. | |
| SymbolContextList sc_list; | |
| if (module) { | |
| module->FindFunctions(name, nullptr, eFunctionNameTypeAuto, include_symbols, | |
| include_inlines, sc_list); | |
| } else if (exe_ctx.GetTargetPtr()) { | |
| exe_ctx.GetTargetPtr()->GetImages().FindFunctions( | |
| name, eFunctionNameTypeAuto, include_symbols, include_inlines, sc_list); | |
| } | |
| // If no functions were found there's nothing to disassemble. | |
| if (sc_list.IsEmpty()) | |
| return false; | |
| return Disassemble(debugger, arch, plugin_name, flavor, exe_ctx, sc_list, | |
| num_instructions, mixed_source_and_assembly, | |
| num_mixed_context_lines, options, strm); | |
| } | |
| lldb::DisassemblerSP Disassembler::DisassembleRange( | |
| const ArchSpec &arch, const char *plugin_name, const char *flavor, | |
| const ExecutionContext &exe_ctx, const AddressRange &range, | |
| bool prefer_file_cache) { | |
| if (range.GetByteSize() <= 0) | |
| return {}; | |
| if (!range.GetBaseAddress().IsValid()) | |
| return {}; | |
| lldb::DisassemblerSP disasm_sp = Disassembler::FindPluginForTarget( | |
| exe_ctx.GetTargetSP(), arch, flavor, plugin_name); | |
| if (!disasm_sp) | |
| return {}; | |
| const size_t bytes_disassembled = | |
| disasm_sp->ParseInstructions(&exe_ctx, range, nullptr, prefer_file_cache); | |
| if (bytes_disassembled == 0) | |
| return {}; | |
| return disasm_sp; | |
| } | |
| lldb::DisassemblerSP | |
| Disassembler::DisassembleBytes(const ArchSpec &arch, const char *plugin_name, | |
| const char *flavor, const Address &start, | |
| const void *src, size_t src_len, | |
| uint32_t num_instructions, bool data_from_file) { | |
| if (!src) | |
| return {}; | |
| lldb::DisassemblerSP disasm_sp = | |
| Disassembler::FindPlugin(arch, flavor, plugin_name); | |
| if (!disasm_sp) | |
| return {}; | |
| DataExtractor data(src, src_len, arch.GetByteOrder(), | |
| arch.GetAddressByteSize()); | |
| (void)disasm_sp->DecodeInstructions(start, data, 0, num_instructions, false, | |
| data_from_file); | |
| return disasm_sp; | |
| } | |
| bool Disassembler::Disassemble(Debugger &debugger, const ArchSpec &arch, | |
| const char *plugin_name, const char *flavor, | |
| const ExecutionContext &exe_ctx, | |
| const AddressRange &disasm_range, | |
| uint32_t num_instructions, | |
| bool mixed_source_and_assembly, | |
| uint32_t num_mixed_context_lines, | |
| uint32_t options, Stream &strm) { | |
| if (!disasm_range.GetByteSize()) | |
| return false; | |
| lldb::DisassemblerSP disasm_sp(Disassembler::FindPluginForTarget( | |
| exe_ctx.GetTargetSP(), arch, flavor, plugin_name)); | |
| if (!disasm_sp) | |
| return false; | |
| AddressRange range; | |
| ResolveAddress(exe_ctx, disasm_range.GetBaseAddress(), | |
| range.GetBaseAddress()); | |
| range.SetByteSize(disasm_range.GetByteSize()); | |
| const bool prefer_file_cache = false; | |
| size_t bytes_disassembled = | |
| disasm_sp->ParseInstructions(&exe_ctx, range, &strm, prefer_file_cache); | |
| if (bytes_disassembled == 0) | |
| return false; | |
| return PrintInstructions(disasm_sp.get(), debugger, arch, exe_ctx, | |
| num_instructions, mixed_source_and_assembly, | |
| num_mixed_context_lines, options, strm); | |
| } | |
| bool Disassembler::Disassemble(Debugger &debugger, const ArchSpec &arch, | |
| const char *plugin_name, const char *flavor, | |
| const ExecutionContext &exe_ctx, | |
| const Address &start_address, | |
| uint32_t num_instructions, | |
| bool mixed_source_and_assembly, | |
| uint32_t num_mixed_context_lines, | |
| uint32_t options, Stream &strm) { | |
| if (num_instructions == 0) | |
| return false; | |
| lldb::DisassemblerSP disasm_sp(Disassembler::FindPluginForTarget( | |
| exe_ctx.GetTargetSP(), arch, flavor, plugin_name)); | |
| if (!disasm_sp) | |
| return false; | |
| Address addr; | |
| ResolveAddress(exe_ctx, start_address, addr); | |
| const bool prefer_file_cache = false; | |
| size_t bytes_disassembled = disasm_sp->ParseInstructions( | |
| &exe_ctx, addr, num_instructions, prefer_file_cache); | |
| if (bytes_disassembled == 0) | |
| return false; | |
| return PrintInstructions(disasm_sp.get(), debugger, arch, exe_ctx, | |
| num_instructions, mixed_source_and_assembly, | |
| num_mixed_context_lines, options, strm); | |
| } | |
| Disassembler::SourceLine | |
| Disassembler::GetFunctionDeclLineEntry(const SymbolContext &sc) { | |
| if (!sc.function) | |
| return {}; | |
| if (!sc.line_entry.IsValid()) | |
| return {}; | |
| LineEntry prologue_end_line = sc.line_entry; | |
| FileSpec func_decl_file; | |
| uint32_t func_decl_line; | |
| sc.function->GetStartLineSourceInfo(func_decl_file, func_decl_line); | |
| if (func_decl_file != prologue_end_line.file && | |
| func_decl_file != prologue_end_line.original_file) | |
| return {}; | |
| SourceLine decl_line; | |
| decl_line.file = func_decl_file; | |
| decl_line.line = func_decl_line; | |
| // TODO: Do we care about column on these entries? If so, we need to plumb | |
| // that through GetStartLineSourceInfo. | |
| decl_line.column = 0; | |
| return decl_line; | |
| } | |
| void Disassembler::AddLineToSourceLineTables( | |
| SourceLine &line, | |
| std::map<FileSpec, std::set<uint32_t>> &source_lines_seen) { | |
| if (line.IsValid()) { | |
| auto source_lines_seen_pos = source_lines_seen.find(line.file); | |
| if (source_lines_seen_pos == source_lines_seen.end()) { | |
| std::set<uint32_t> lines; | |
| lines.insert(line.line); | |
| source_lines_seen.emplace(line.file, lines); | |
| } else { | |
| source_lines_seen_pos->second.insert(line.line); | |
| } | |
| } | |
| } | |
| bool Disassembler::ElideMixedSourceAndDisassemblyLine( | |
| const ExecutionContext &exe_ctx, const SymbolContext &sc, | |
| SourceLine &line) { | |
| // TODO: should we also check target.process.thread.step-avoid-libraries ? | |
| const RegularExpression *avoid_regex = nullptr; | |
| // Skip any line #0 entries - they are implementation details | |
| if (line.line == 0) | |
| return false; | |
| ThreadSP thread_sp = exe_ctx.GetThreadSP(); | |
| if (thread_sp) { | |
| avoid_regex = thread_sp->GetSymbolsToAvoidRegexp(); | |
| } else { | |
| TargetSP target_sp = exe_ctx.GetTargetSP(); | |
| if (target_sp) { | |
| Status error; | |
| OptionValueSP value_sp = target_sp->GetDebugger().GetPropertyValue( | |
| &exe_ctx, "target.process.thread.step-avoid-regexp", false, error); | |
| if (value_sp && value_sp->GetType() == OptionValue::eTypeRegex) { | |
| OptionValueRegex *re = value_sp->GetAsRegex(); | |
| if (re) { | |
| avoid_regex = re->GetCurrentValue(); | |
| } | |
| } | |
| } | |
| } | |
| if (avoid_regex && sc.symbol != nullptr) { | |
| const char *function_name = | |
| sc.GetFunctionName(Mangled::ePreferDemangledWithoutArguments) | |
| .GetCString(); | |
| if (function_name && avoid_regex->Execute(function_name)) { | |
| // skip this source line | |
| return true; | |
| } | |
| } | |
| // don't skip this source line | |
| return false; | |
| } | |
| bool Disassembler::PrintInstructions(Disassembler *disasm_ptr, | |
| Debugger &debugger, const ArchSpec &arch, | |
| const ExecutionContext &exe_ctx, | |
| uint32_t num_instructions, | |
| bool mixed_source_and_assembly, | |
| uint32_t num_mixed_context_lines, | |
| uint32_t options, Stream &strm) { | |
| // We got some things disassembled... | |
| size_t num_instructions_found = disasm_ptr->GetInstructionList().GetSize(); | |
| if (num_instructions > 0 && num_instructions < num_instructions_found) | |
| num_instructions_found = num_instructions; | |
| const uint32_t max_opcode_byte_size = | |
| disasm_ptr->GetInstructionList().GetMaxOpcocdeByteSize(); | |
| SymbolContext sc; | |
| SymbolContext prev_sc; | |
| AddressRange current_source_line_range; | |
| const Address *pc_addr_ptr = nullptr; | |
| StackFrame *frame = exe_ctx.GetFramePtr(); | |
| TargetSP target_sp(exe_ctx.GetTargetSP()); | |
| SourceManager &source_manager = | |
| target_sp ? target_sp->GetSourceManager() : debugger.GetSourceManager(); | |
| if (frame) { | |
| pc_addr_ptr = &frame->GetFrameCodeAddress(); | |
| } | |
| const uint32_t scope = | |
| eSymbolContextLineEntry | eSymbolContextFunction | eSymbolContextSymbol; | |
| const bool use_inline_block_range = false; | |
| const FormatEntity::Entry *disassembly_format = nullptr; | |
| FormatEntity::Entry format; | |
| if (exe_ctx.HasTargetScope()) { | |
| disassembly_format = | |
| exe_ctx.GetTargetRef().GetDebugger().GetDisassemblyFormat(); | |
| } else { | |
| FormatEntity::Parse("${addr}: ", format); | |
| disassembly_format = &format; | |
| } | |
| // First pass: step through the list of instructions, find how long the | |
| // initial addresses strings are, insert padding in the second pass so the | |
| // opcodes all line up nicely. | |
| // Also build up the source line mapping if this is mixed source & assembly | |
| // mode. Calculate the source line for each assembly instruction (eliding | |
| // inlined functions which the user wants to skip). | |
| std::map<FileSpec, std::set<uint32_t>> source_lines_seen; | |
| Symbol *previous_symbol = nullptr; | |
| size_t address_text_size = 0; | |
| for (size_t i = 0; i < num_instructions_found; ++i) { | |
| Instruction *inst = | |
| disasm_ptr->GetInstructionList().GetInstructionAtIndex(i).get(); | |
| if (inst) { | |
| const Address &addr = inst->GetAddress(); | |
| ModuleSP module_sp(addr.GetModule()); | |
| if (module_sp) { | |
| const SymbolContextItem resolve_mask = eSymbolContextFunction | | |
| eSymbolContextSymbol | | |
| eSymbolContextLineEntry; | |
| uint32_t resolved_mask = | |
| module_sp->ResolveSymbolContextForAddress(addr, resolve_mask, sc); | |
| if (resolved_mask) { | |
| StreamString strmstr; | |
| Debugger::FormatDisassemblerAddress(disassembly_format, &sc, nullptr, | |
| &exe_ctx, &addr, strmstr); | |
| size_t cur_line = strmstr.GetSizeOfLastLine(); | |
| if (cur_line > address_text_size) | |
| address_text_size = cur_line; | |
| // Add entries to our "source_lines_seen" map+set which list which | |
| // sources lines occur in this disassembly session. We will print | |
| // lines of context around a source line, but we don't want to print | |
| // a source line that has a line table entry of its own - we'll leave | |
| // that source line to be printed when it actually occurs in the | |
| // disassembly. | |
| if (mixed_source_and_assembly && sc.line_entry.IsValid()) { | |
| if (sc.symbol != previous_symbol) { | |
| SourceLine decl_line = GetFunctionDeclLineEntry(sc); | |
| if (!ElideMixedSourceAndDisassemblyLine(exe_ctx, sc, decl_line)) | |
| AddLineToSourceLineTables(decl_line, source_lines_seen); | |
| } | |
| if (sc.line_entry.IsValid()) { | |
| SourceLine this_line; | |
| this_line.file = sc.line_entry.file; | |
| this_line.line = sc.line_entry.line; | |
| this_line.column = sc.line_entry.column; | |
| if (!ElideMixedSourceAndDisassemblyLine(exe_ctx, sc, this_line)) | |
| AddLineToSourceLineTables(this_line, source_lines_seen); | |
| } | |
| } | |
| } | |
| sc.Clear(false); | |
| } | |
| } | |
| } | |
| previous_symbol = nullptr; | |
| SourceLine previous_line; | |
| for (size_t i = 0; i < num_instructions_found; ++i) { | |
| Instruction *inst = | |
| disasm_ptr->GetInstructionList().GetInstructionAtIndex(i).get(); | |
| if (inst) { | |
| const Address &addr = inst->GetAddress(); | |
| const bool inst_is_at_pc = pc_addr_ptr && addr == *pc_addr_ptr; | |
| SourceLinesToDisplay source_lines_to_display; | |
| prev_sc = sc; | |
| ModuleSP module_sp(addr.GetModule()); | |
| if (module_sp) { | |
| uint32_t resolved_mask = module_sp->ResolveSymbolContextForAddress( | |
| addr, eSymbolContextEverything, sc); | |
| if (resolved_mask) { | |
| if (mixed_source_and_assembly) { | |
| // If we've started a new function (non-inlined), print all of the | |
| // source lines from the function declaration until the first line | |
| // table entry - typically the opening curly brace of the function. | |
| if (previous_symbol != sc.symbol) { | |
| // The default disassembly format puts an extra blank line | |
| // between functions - so when we're displaying the source | |
| // context for a function, we don't want to add a blank line | |
| // after the source context or we'll end up with two of them. | |
| if (previous_symbol != nullptr) | |
| source_lines_to_display.print_source_context_end_eol = false; | |
| previous_symbol = sc.symbol; | |
| if (sc.function && sc.line_entry.IsValid()) { | |
| LineEntry prologue_end_line = sc.line_entry; | |
| if (!ElideMixedSourceAndDisassemblyLine(exe_ctx, sc, | |
| prologue_end_line)) { | |
| FileSpec func_decl_file; | |
| uint32_t func_decl_line; | |
| sc.function->GetStartLineSourceInfo(func_decl_file, | |
| func_decl_line); | |
| if (func_decl_file == prologue_end_line.file || | |
| func_decl_file == prologue_end_line.original_file) { | |
| // Add all the lines between the function declaration and | |
| // the first non-prologue source line to the list of lines | |
| // to print. | |
| for (uint32_t lineno = func_decl_line; | |
| lineno <= prologue_end_line.line; lineno++) { | |
| SourceLine this_line; | |
| this_line.file = func_decl_file; | |
| this_line.line = lineno; | |
| source_lines_to_display.lines.push_back(this_line); | |
| } | |
| // Mark the last line as the "current" one. Usually this | |
| // is the open curly brace. | |
| if (source_lines_to_display.lines.size() > 0) | |
| source_lines_to_display.current_source_line = | |
| source_lines_to_display.lines.size() - 1; | |
| } | |
| } | |
| } | |
| sc.GetAddressRange(scope, 0, use_inline_block_range, | |
| current_source_line_range); | |
| } | |
| // If we've left a previous source line's address range, print a | |
| // new source line | |
| if (!current_source_line_range.ContainsFileAddress(addr)) { | |
| sc.GetAddressRange(scope, 0, use_inline_block_range, | |
| current_source_line_range); | |
| if (sc != prev_sc && sc.comp_unit && sc.line_entry.IsValid()) { | |
| SourceLine this_line; | |
| this_line.file = sc.line_entry.file; | |
| this_line.line = sc.line_entry.line; | |
| if (!ElideMixedSourceAndDisassemblyLine(exe_ctx, sc, | |
| this_line)) { | |
| // Only print this source line if it is different from the | |
| // last source line we printed. There may have been inlined | |
| // functions between these lines that we elided, resulting in | |
| // the same line being printed twice in a row for a | |
| // contiguous block of assembly instructions. | |
| if (this_line != previous_line) { | |
| std::vector<uint32_t> previous_lines; | |
| for (uint32_t i = 0; | |
| i < num_mixed_context_lines && | |
| (this_line.line - num_mixed_context_lines) > 0; | |
| i++) { | |
| uint32_t line = | |
| this_line.line - num_mixed_context_lines + i; | |
| auto pos = source_lines_seen.find(this_line.file); | |
| if (pos != source_lines_seen.end()) { | |
| if (pos->second.count(line) == 1) { | |
| previous_lines.clear(); | |
| } else { | |
| previous_lines.push_back(line); | |
| } | |
| } | |
| } | |
| for (size_t i = 0; i < previous_lines.size(); i++) { | |
| SourceLine previous_line; | |
| previous_line.file = this_line.file; | |
| previous_line.line = previous_lines[i]; | |
| auto pos = source_lines_seen.find(previous_line.file); | |
| if (pos != source_lines_seen.end()) { | |
| pos->second.insert(previous_line.line); | |
| } | |
| source_lines_to_display.lines.push_back(previous_line); | |
| } | |
| source_lines_to_display.lines.push_back(this_line); | |
| source_lines_to_display.current_source_line = | |
| source_lines_to_display.lines.size() - 1; | |
| for (uint32_t i = 0; i < num_mixed_context_lines; i++) { | |
| SourceLine next_line; | |
| next_line.file = this_line.file; | |
| next_line.line = this_line.line + i + 1; | |
| auto pos = source_lines_seen.find(next_line.file); | |
| if (pos != source_lines_seen.end()) { | |
| if (pos->second.count(next_line.line) == 1) | |
| break; | |
| pos->second.insert(next_line.line); | |
| } | |
| source_lines_to_display.lines.push_back(next_line); | |
| } | |
| } | |
| previous_line = this_line; | |
| } | |
| } | |
| } | |
| } | |
| } else { | |
| sc.Clear(true); | |
| } | |
| } | |
| if (source_lines_to_display.lines.size() > 0) { | |
| strm.EOL(); | |
| for (size_t idx = 0; idx < source_lines_to_display.lines.size(); | |
| idx++) { | |
| SourceLine ln = source_lines_to_display.lines[idx]; | |
| const char *line_highlight = ""; | |
| if (inst_is_at_pc && (options & eOptionMarkPCSourceLine)) { | |
| line_highlight = "->"; | |
| } else if (idx == source_lines_to_display.current_source_line) { | |
| line_highlight = "**"; | |
| } | |
| source_manager.DisplaySourceLinesWithLineNumbers( | |
| ln.file, ln.line, ln.column, 0, 0, line_highlight, &strm); | |
| } | |
| if (source_lines_to_display.print_source_context_end_eol) | |
| strm.EOL(); | |
| } | |
| const bool show_bytes = (options & eOptionShowBytes) != 0; | |
| inst->Dump(&strm, max_opcode_byte_size, true, show_bytes, &exe_ctx, &sc, | |
| &prev_sc, nullptr, address_text_size); | |
| strm.EOL(); | |
| } else { | |
| break; | |
| } | |
| } | |
| return true; | |
| } | |
| bool Disassembler::Disassemble(Debugger &debugger, const ArchSpec &arch, | |
| const char *plugin_name, const char *flavor, | |
| const ExecutionContext &exe_ctx, | |
| uint32_t num_instructions, | |
| bool mixed_source_and_assembly, | |
| uint32_t num_mixed_context_lines, | |
| uint32_t options, Stream &strm) { | |
| AddressRange range; | |
| StackFrame *frame = exe_ctx.GetFramePtr(); | |
| if (frame) { | |
| SymbolContext sc( | |
| frame->GetSymbolContext(eSymbolContextFunction | eSymbolContextSymbol)); | |
| if (sc.function) { | |
| range = sc.function->GetAddressRange(); | |
| } else if (sc.symbol && sc.symbol->ValueIsAddress()) { | |
| range.GetBaseAddress() = sc.symbol->GetAddressRef(); | |
| range.SetByteSize(sc.symbol->GetByteSize()); | |
| } else { | |
| range.GetBaseAddress() = frame->GetFrameCodeAddress(); | |
| } | |
| if (range.GetBaseAddress().IsValid() && range.GetByteSize() == 0) | |
| range.SetByteSize(DEFAULT_DISASM_BYTE_SIZE); | |
| } | |
| return Disassemble(debugger, arch, plugin_name, flavor, exe_ctx, range, | |
| num_instructions, mixed_source_and_assembly, | |
| num_mixed_context_lines, options, strm); | |
| } | |
| Instruction::Instruction(const Address &address, AddressClass addr_class) | |
| : m_address(address), m_address_class(addr_class), m_opcode(), | |
| m_calculated_strings(false) {} | |
| Instruction::~Instruction() = default; | |
| AddressClass Instruction::GetAddressClass() { | |
| if (m_address_class == AddressClass::eInvalid) | |
| m_address_class = m_address.GetAddressClass(); | |
| return m_address_class; | |
| } | |
| void Instruction::Dump(lldb_private::Stream *s, uint32_t max_opcode_byte_size, | |
| bool show_address, bool show_bytes, | |
| const ExecutionContext *exe_ctx, | |
| const SymbolContext *sym_ctx, | |
| const SymbolContext *prev_sym_ctx, | |
| const FormatEntity::Entry *disassembly_addr_format, | |
| size_t max_address_text_size) { | |
| size_t opcode_column_width = 7; | |
| const size_t operand_column_width = 25; | |
| CalculateMnemonicOperandsAndCommentIfNeeded(exe_ctx); | |
| StreamString ss; | |
| if (show_address) { | |
| Debugger::FormatDisassemblerAddress(disassembly_addr_format, sym_ctx, | |
| prev_sym_ctx, exe_ctx, &m_address, ss); | |
| ss.FillLastLineToColumn(max_address_text_size, ' '); | |
| } | |
| if (show_bytes) { | |
| if (m_opcode.GetType() == Opcode::eTypeBytes) { | |
| // x86_64 and i386 are the only ones that use bytes right now so pad out | |
| // the byte dump to be able to always show 15 bytes (3 chars each) plus a | |
| // space | |
| if (max_opcode_byte_size > 0) | |
| m_opcode.Dump(&ss, max_opcode_byte_size * 3 + 1); | |
| else | |
| m_opcode.Dump(&ss, 15 * 3 + 1); | |
| } else { | |
| // Else, we have ARM or MIPS which can show up to a uint32_t 0x00000000 | |
| // (10 spaces) plus two for padding... | |
| if (max_opcode_byte_size > 0) | |
| m_opcode.Dump(&ss, max_opcode_byte_size * 3 + 1); | |
| else | |
| m_opcode.Dump(&ss, 12); | |
| } | |
| } | |
| const size_t opcode_pos = ss.GetSizeOfLastLine(); | |
| // The default opcode size of 7 characters is plenty for most architectures | |
| // but some like arm can pull out the occasional vqrshrun.s16. We won't get | |
| // consistent column spacing in these cases, unfortunately. | |
| if (m_opcode_name.length() >= opcode_column_width) { | |
| opcode_column_width = m_opcode_name.length() + 1; | |
| } | |
| ss.PutCString(m_opcode_name); | |
| ss.FillLastLineToColumn(opcode_pos + opcode_column_width, ' '); | |
| ss.PutCString(m_mnemonics); | |
| if (!m_comment.empty()) { | |
| ss.FillLastLineToColumn( | |
| opcode_pos + opcode_column_width + operand_column_width, ' '); | |
| ss.PutCString(" ; "); | |
| ss.PutCString(m_comment); | |
| } | |
| s->PutCString(ss.GetString()); | |
| } | |
| bool Instruction::DumpEmulation(const ArchSpec &arch) { | |
| std::unique_ptr<EmulateInstruction> insn_emulator_up( | |
| EmulateInstruction::FindPlugin(arch, eInstructionTypeAny, nullptr)); | |
| if (insn_emulator_up) { | |
| insn_emulator_up->SetInstruction(GetOpcode(), GetAddress(), nullptr); | |
| return insn_emulator_up->EvaluateInstruction(0); | |
| } | |
| return false; | |
| } | |
| bool Instruction::CanSetBreakpoint () { | |
| return !HasDelaySlot(); | |
| } | |
| bool Instruction::HasDelaySlot() { | |
| // Default is false. | |
| return false; | |
| } | |
| OptionValueSP Instruction::ReadArray(FILE *in_file, Stream *out_stream, | |
| OptionValue::Type data_type) { | |
| bool done = false; | |
| char buffer[1024]; | |
| auto option_value_sp = std::make_shared<OptionValueArray>(1u << data_type); | |
| int idx = 0; | |
| while (!done) { | |
| if (!fgets(buffer, 1023, in_file)) { | |
| out_stream->Printf( | |
| "Instruction::ReadArray: Error reading file (fgets).\n"); | |
| option_value_sp.reset(); | |
| return option_value_sp; | |
| } | |
| std::string line(buffer); | |
| size_t len = line.size(); | |
| if (line[len - 1] == '\n') { | |
| line[len - 1] = '\0'; | |
| line.resize(len - 1); | |
| } | |
| if ((line.size() == 1) && line[0] == ']') { | |
| done = true; | |
| line.clear(); | |
| } | |
| if (!line.empty()) { | |
| std::string value; | |
| static RegularExpression g_reg_exp( | |
| llvm::StringRef("^[ \t]*([^ \t]+)[ \t]*$")); | |
| llvm::SmallVector<llvm::StringRef, 2> matches; | |
| if (g_reg_exp.Execute(line, &matches)) | |
| value = matches[1].str(); | |
| else | |
| value = line; | |
| OptionValueSP data_value_sp; | |
| switch (data_type) { | |
| case OptionValue::eTypeUInt64: | |
| data_value_sp = std::make_shared<OptionValueUInt64>(0, 0); | |
| data_value_sp->SetValueFromString(value); | |
| break; | |
| // Other types can be added later as needed. | |
| default: | |
| data_value_sp = std::make_shared<OptionValueString>(value.c_str(), ""); | |
| break; | |
| } | |
| option_value_sp->GetAsArray()->InsertValue(idx, data_value_sp); | |
| ++idx; | |
| } | |
| } | |
| return option_value_sp; | |
| } | |
| OptionValueSP Instruction::ReadDictionary(FILE *in_file, Stream *out_stream) { | |
| bool done = false; | |
| char buffer[1024]; | |
| auto option_value_sp = std::make_shared<OptionValueDictionary>(); | |
| static ConstString encoding_key("data_encoding"); | |
| OptionValue::Type data_type = OptionValue::eTypeInvalid; | |
| while (!done) { | |
| // Read the next line in the file | |
| if (!fgets(buffer, 1023, in_file)) { | |
| out_stream->Printf( | |
| "Instruction::ReadDictionary: Error reading file (fgets).\n"); | |
| option_value_sp.reset(); | |
| return option_value_sp; | |
| } | |
| // Check to see if the line contains the end-of-dictionary marker ("}") | |
| std::string line(buffer); | |
| size_t len = line.size(); | |
| if (line[len - 1] == '\n') { | |
| line[len - 1] = '\0'; | |
| line.resize(len - 1); | |
| } | |
| if ((line.size() == 1) && (line[0] == '}')) { | |
| done = true; | |
| line.clear(); | |
| } | |
| // Try to find a key-value pair in the current line and add it to the | |
| // dictionary. | |
| if (!line.empty()) { | |
| static RegularExpression g_reg_exp(llvm::StringRef( | |
| "^[ \t]*([a-zA-Z_][a-zA-Z0-9_]*)[ \t]*=[ \t]*(.*)[ \t]*$")); | |
| llvm::SmallVector<llvm::StringRef, 3> matches; | |
| bool reg_exp_success = g_reg_exp.Execute(line, &matches); | |
| std::string key; | |
| std::string value; | |
| if (reg_exp_success) { | |
| key = matches[1].str(); | |
| value = matches[2].str(); | |
| } else { | |
| out_stream->Printf("Instruction::ReadDictionary: Failure executing " | |
| "regular expression.\n"); | |
| option_value_sp.reset(); | |
| return option_value_sp; | |
| } | |
| ConstString const_key(key.c_str()); | |
| // Check value to see if it's the start of an array or dictionary. | |
| lldb::OptionValueSP value_sp; | |
| assert(value.empty() == false); | |
| assert(key.empty() == false); | |
| if (value[0] == '{') { | |
| assert(value.size() == 1); | |
| // value is a dictionary | |
| value_sp = ReadDictionary(in_file, out_stream); | |
| if (!value_sp) { | |
| option_value_sp.reset(); | |
| return option_value_sp; | |
| } | |
| } else if (value[0] == '[') { | |
| assert(value.size() == 1); | |
| // value is an array | |
| value_sp = ReadArray(in_file, out_stream, data_type); | |
| if (!value_sp) { | |
| option_value_sp.reset(); | |
| return option_value_sp; | |
| } | |
| // We've used the data_type to read an array; re-set the type to | |
| // Invalid | |
| data_type = OptionValue::eTypeInvalid; | |
| } else if ((value[0] == '0') && (value[1] == 'x')) { | |
| value_sp = std::make_shared<OptionValueUInt64>(0, 0); | |
| value_sp->SetValueFromString(value); | |
| } else { | |
| size_t len = value.size(); | |
| if ((value[0] == '"') && (value[len - 1] == '"')) | |
| value = value.substr(1, len - 2); | |
| value_sp = std::make_shared<OptionValueString>(value.c_str(), ""); | |
| } | |
| if (const_key == encoding_key) { | |
| // A 'data_encoding=..." is NOT a normal key-value pair; it is meta-data | |
| // indicating the | |
| // data type of an upcoming array (usually the next bit of data to be | |
| // read in). | |
| if (strcmp(value.c_str(), "uint32_t") == 0) | |
| data_type = OptionValue::eTypeUInt64; | |
| } else | |
| option_value_sp->GetAsDictionary()->SetValueForKey(const_key, value_sp, | |
| false); | |
| } | |
| } | |
| return option_value_sp; | |
| } | |
| bool Instruction::TestEmulation(Stream *out_stream, const char *file_name) { | |
| if (!out_stream) | |
| return false; | |
| if (!file_name) { | |
| out_stream->Printf("Instruction::TestEmulation: Missing file_name."); | |
| return false; | |
| } | |
| FILE *test_file = FileSystem::Instance().Fopen(file_name, "r"); | |
| if (!test_file) { | |
| out_stream->Printf( | |
| "Instruction::TestEmulation: Attempt to open test file failed."); | |
| return false; | |
| } | |
| char buffer[256]; | |
| if (!fgets(buffer, 255, test_file)) { | |
| out_stream->Printf( | |
| "Instruction::TestEmulation: Error reading first line of test file.\n"); | |
| fclose(test_file); | |
| return false; | |
| } | |
| if (strncmp(buffer, "InstructionEmulationState={", 27) != 0) { | |
| out_stream->Printf("Instructin::TestEmulation: Test file does not contain " | |
| "emulation state dictionary\n"); | |
| fclose(test_file); | |
| return false; | |
| } | |
| // Read all the test information from the test file into an | |
| // OptionValueDictionary. | |
| OptionValueSP data_dictionary_sp(ReadDictionary(test_file, out_stream)); | |
| if (!data_dictionary_sp) { | |
| out_stream->Printf( | |
| "Instruction::TestEmulation: Error reading Dictionary Object.\n"); | |
| fclose(test_file); | |
| return false; | |
| } | |
| fclose(test_file); | |
| OptionValueDictionary *data_dictionary = | |
| data_dictionary_sp->GetAsDictionary(); | |
| static ConstString description_key("assembly_string"); | |
| static ConstString triple_key("triple"); | |
| OptionValueSP value_sp = data_dictionary->GetValueForKey(description_key); | |
| if (!value_sp) { | |
| out_stream->Printf("Instruction::TestEmulation: Test file does not " | |
| "contain description string.\n"); | |
| return false; | |
| } | |
| SetDescription(value_sp->GetStringValue()); | |
| value_sp = data_dictionary->GetValueForKey(triple_key); | |
| if (!value_sp) { | |
| out_stream->Printf( | |
| "Instruction::TestEmulation: Test file does not contain triple.\n"); | |
| return false; | |
| } | |
| ArchSpec arch; | |
| arch.SetTriple(llvm::Triple(value_sp->GetStringValue())); | |
| bool success = false; | |
| std::unique_ptr<EmulateInstruction> insn_emulator_up( | |
| EmulateInstruction::FindPlugin(arch, eInstructionTypeAny, nullptr)); | |
| if (insn_emulator_up) | |
| success = | |
| insn_emulator_up->TestEmulation(out_stream, arch, data_dictionary); | |
| if (success) | |
| out_stream->Printf("Emulation test succeeded."); | |
| else | |
| out_stream->Printf("Emulation test failed."); | |
| return success; | |
| } | |
| bool Instruction::Emulate( | |
| const ArchSpec &arch, uint32_t evaluate_options, void *baton, | |
| EmulateInstruction::ReadMemoryCallback read_mem_callback, | |
| EmulateInstruction::WriteMemoryCallback write_mem_callback, | |
| EmulateInstruction::ReadRegisterCallback read_reg_callback, | |
| EmulateInstruction::WriteRegisterCallback write_reg_callback) { | |
| std::unique_ptr<EmulateInstruction> insn_emulator_up( | |
| EmulateInstruction::FindPlugin(arch, eInstructionTypeAny, nullptr)); | |
| if (insn_emulator_up) { | |
| insn_emulator_up->SetBaton(baton); | |
| insn_emulator_up->SetCallbacks(read_mem_callback, write_mem_callback, | |
| read_reg_callback, write_reg_callback); | |
| insn_emulator_up->SetInstruction(GetOpcode(), GetAddress(), nullptr); | |
| return insn_emulator_up->EvaluateInstruction(evaluate_options); | |
| } | |
| return false; | |
| } | |
| uint32_t Instruction::GetData(DataExtractor &data) { | |
| return m_opcode.GetData(data); | |
| } | |
| InstructionList::InstructionList() : m_instructions() {} | |
| InstructionList::~InstructionList() = default; | |
| size_t InstructionList::GetSize() const { return m_instructions.size(); } | |
| uint32_t InstructionList::GetMaxOpcocdeByteSize() const { | |
| uint32_t max_inst_size = 0; | |
| collection::const_iterator pos, end; | |
| for (pos = m_instructions.begin(), end = m_instructions.end(); pos != end; | |
| ++pos) { | |
| uint32_t inst_size = (*pos)->GetOpcode().GetByteSize(); | |
| if (max_inst_size < inst_size) | |
| max_inst_size = inst_size; | |
| } | |
| return max_inst_size; | |
| } | |
| InstructionSP InstructionList::GetInstructionAtIndex(size_t idx) const { | |
| InstructionSP inst_sp; | |
| if (idx < m_instructions.size()) | |
| inst_sp = m_instructions[idx]; | |
| return inst_sp; | |
| } | |
| void InstructionList::Dump(Stream *s, bool show_address, bool show_bytes, | |
| const ExecutionContext *exe_ctx) { | |
| const uint32_t max_opcode_byte_size = GetMaxOpcocdeByteSize(); | |
| collection::const_iterator pos, begin, end; | |
| const FormatEntity::Entry *disassembly_format = nullptr; | |
| FormatEntity::Entry format; | |
| if (exe_ctx && exe_ctx->HasTargetScope()) { | |
| disassembly_format = | |
| exe_ctx->GetTargetRef().GetDebugger().GetDisassemblyFormat(); | |
| } else { | |
| FormatEntity::Parse("${addr}: ", format); | |
| disassembly_format = &format; | |
| } | |
| for (begin = m_instructions.begin(), end = m_instructions.end(), pos = begin; | |
| pos != end; ++pos) { | |
| if (pos != begin) | |
| s->EOL(); | |
| (*pos)->Dump(s, max_opcode_byte_size, show_address, show_bytes, exe_ctx, | |
| nullptr, nullptr, disassembly_format, 0); | |
| } | |
| } | |
| void InstructionList::Clear() { m_instructions.clear(); } | |
| void InstructionList::Append(lldb::InstructionSP &inst_sp) { | |
| if (inst_sp) | |
| m_instructions.push_back(inst_sp); | |
| } | |
| uint32_t | |
| InstructionList::GetIndexOfNextBranchInstruction(uint32_t start, | |
| Target &target, | |
| bool ignore_calls) const { | |
| size_t num_instructions = m_instructions.size(); | |
| uint32_t next_branch = UINT32_MAX; | |
| size_t i; | |
| for (i = start; i < num_instructions; i++) { | |
| if (m_instructions[i]->DoesBranch()) { | |
| if (ignore_calls && m_instructions[i]->IsCall()) | |
| continue; | |
| next_branch = i; | |
| break; | |
| } | |
| } | |
| // Hexagon needs the first instruction of the packet with the branch. Go | |
| // backwards until we find an instruction marked end-of-packet, or until we | |
| // hit start. | |
| if (target.GetArchitecture().GetTriple().getArch() == llvm::Triple::hexagon) { | |
| // If we didn't find a branch, find the last packet start. | |
| if (next_branch == UINT32_MAX) { | |
| i = num_instructions - 1; | |
| } | |
| while (i > start) { | |
| --i; | |
| Status error; | |
| uint32_t inst_bytes; | |
| bool prefer_file_cache = false; // Read from process if process is running | |
| lldb::addr_t load_addr = LLDB_INVALID_ADDRESS; | |
| target.ReadMemory(m_instructions[i]->GetAddress(), prefer_file_cache, | |
| &inst_bytes, sizeof(inst_bytes), error, &load_addr); | |
| // If we have an error reading memory, return start | |
| if (!error.Success()) | |
| return start; | |
| // check if this is the last instruction in a packet bits 15:14 will be | |
| // 11b or 00b for a duplex | |
| if (((inst_bytes & 0xC000) == 0xC000) || | |
| ((inst_bytes & 0xC000) == 0x0000)) { | |
| // instruction after this should be the start of next packet | |
| next_branch = i + 1; | |
| break; | |
| } | |
| } | |
| if (next_branch == UINT32_MAX) { | |
| // We couldn't find the previous packet, so return start | |
| next_branch = start; | |
| } | |
| } | |
| return next_branch; | |
| } | |
| uint32_t | |
| InstructionList::GetIndexOfInstructionAtAddress(const Address &address) { | |
| size_t num_instructions = m_instructions.size(); | |
| uint32_t index = UINT32_MAX; | |
| for (size_t i = 0; i < num_instructions; i++) { | |
| if (m_instructions[i]->GetAddress() == address) { | |
| index = i; | |
| break; | |
| } | |
| } | |
| return index; | |
| } | |
| uint32_t | |
| InstructionList::GetIndexOfInstructionAtLoadAddress(lldb::addr_t load_addr, | |
| Target &target) { | |
| Address address; | |
| address.SetLoadAddress(load_addr, &target); | |
| return GetIndexOfInstructionAtAddress(address); | |
| } | |
| size_t Disassembler::ParseInstructions(const ExecutionContext *exe_ctx, | |
| const AddressRange &range, | |
| Stream *error_strm_ptr, | |
| bool prefer_file_cache) { | |
| if (exe_ctx) { | |
| Target *target = exe_ctx->GetTargetPtr(); | |
| const addr_t byte_size = range.GetByteSize(); | |
| if (target == nullptr || byte_size == 0 || | |
| !range.GetBaseAddress().IsValid()) | |
| return 0; | |
| auto data_sp = std::make_shared<DataBufferHeap>(byte_size, '\0'); | |
| Status error; | |
| lldb::addr_t load_addr = LLDB_INVALID_ADDRESS; | |
| const size_t bytes_read = target->ReadMemory( | |
| range.GetBaseAddress(), prefer_file_cache, data_sp->GetBytes(), | |
| data_sp->GetByteSize(), error, &load_addr); | |
| if (bytes_read > 0) { | |
| if (bytes_read != data_sp->GetByteSize()) | |
| data_sp->SetByteSize(bytes_read); | |
| DataExtractor data(data_sp, m_arch.GetByteOrder(), | |
| m_arch.GetAddressByteSize()); | |
| const bool data_from_file = load_addr == LLDB_INVALID_ADDRESS; | |
| return DecodeInstructions(range.GetBaseAddress(), data, 0, UINT32_MAX, | |
| false, data_from_file); | |
| } else if (error_strm_ptr) { | |
| const char *error_cstr = error.AsCString(); | |
| if (error_cstr) { | |
| error_strm_ptr->Printf("error: %s\n", error_cstr); | |
| } | |
| } | |
| } else if (error_strm_ptr) { | |
| error_strm_ptr->PutCString("error: invalid execution context\n"); | |
| } | |
| return 0; | |
| } | |
| size_t Disassembler::ParseInstructions(const ExecutionContext *exe_ctx, | |
| const Address &start, | |
| uint32_t num_instructions, | |
| bool prefer_file_cache) { | |
| m_instruction_list.Clear(); | |
| if (exe_ctx == nullptr || num_instructions == 0 || !start.IsValid()) | |
| return 0; | |
| Target *target = exe_ctx->GetTargetPtr(); | |
| // Calculate the max buffer size we will need in order to disassemble | |
| const addr_t byte_size = num_instructions * m_arch.GetMaximumOpcodeByteSize(); | |
| if (target == nullptr || byte_size == 0) | |
| return 0; | |
| DataBufferHeap *heap_buffer = new DataBufferHeap(byte_size, '\0'); | |
| DataBufferSP data_sp(heap_buffer); | |
| Status error; | |
| lldb::addr_t load_addr = LLDB_INVALID_ADDRESS; | |
| const size_t bytes_read = | |
| target->ReadMemory(start, prefer_file_cache, heap_buffer->GetBytes(), | |
| byte_size, error, &load_addr); | |
| const bool data_from_file = load_addr == LLDB_INVALID_ADDRESS; | |
| if (bytes_read == 0) | |
| return 0; | |
| DataExtractor data(data_sp, m_arch.GetByteOrder(), | |
| m_arch.GetAddressByteSize()); | |
| const bool append_instructions = true; | |
| DecodeInstructions(start, data, 0, num_instructions, append_instructions, | |
| data_from_file); | |
| return m_instruction_list.GetSize(); | |
| } | |
| // Disassembler copy constructor | |
| Disassembler::Disassembler(const ArchSpec &arch, const char *flavor) | |
| : m_arch(arch), m_instruction_list(), m_base_addr(LLDB_INVALID_ADDRESS), | |
| m_flavor() { | |
| if (flavor == nullptr) | |
| m_flavor.assign("default"); | |
| else | |
| m_flavor.assign(flavor); | |
| // If this is an arm variant that can only include thumb (T16, T32) | |
| // instructions, force the arch triple to be "thumbv.." instead of "armv..." | |
| if (arch.IsAlwaysThumbInstructions()) { | |
| std::string thumb_arch_name(arch.GetTriple().getArchName().str()); | |
| // Replace "arm" with "thumb" so we get all thumb variants correct | |
| if (thumb_arch_name.size() > 3) { | |
| thumb_arch_name.erase(0, 3); | |
| thumb_arch_name.insert(0, "thumb"); | |
| } | |
| m_arch.SetTriple(thumb_arch_name.c_str()); | |
| } | |
| } | |
| Disassembler::~Disassembler() = default; | |
| InstructionList &Disassembler::GetInstructionList() { | |
| return m_instruction_list; | |
| } | |
| const InstructionList &Disassembler::GetInstructionList() const { | |
| return m_instruction_list; | |
| } | |
| // Class PseudoInstruction | |
| PseudoInstruction::PseudoInstruction() | |
| : Instruction(Address(), AddressClass::eUnknown), m_description() {} | |
| PseudoInstruction::~PseudoInstruction() = default; | |
| bool PseudoInstruction::DoesBranch() { | |
| // This is NOT a valid question for a pseudo instruction. | |
| return false; | |
| } | |
| bool PseudoInstruction::HasDelaySlot() { | |
| // This is NOT a valid question for a pseudo instruction. | |
| return false; | |
| } | |
| size_t PseudoInstruction::Decode(const lldb_private::Disassembler &disassembler, | |
| const lldb_private::DataExtractor &data, | |
| lldb::offset_t data_offset) { | |
| return m_opcode.GetByteSize(); | |
| } | |
| void PseudoInstruction::SetOpcode(size_t opcode_size, void *opcode_data) { | |
| if (!opcode_data) | |
| return; | |
| switch (opcode_size) { | |
| case 8: { | |
| uint8_t value8 = *((uint8_t *)opcode_data); | |
| m_opcode.SetOpcode8(value8, eByteOrderInvalid); | |
| break; | |
| } | |
| case 16: { | |
| uint16_t value16 = *((uint16_t *)opcode_data); | |
| m_opcode.SetOpcode16(value16, eByteOrderInvalid); | |
| break; | |
| } | |
| case 32: { | |
| uint32_t value32 = *((uint32_t *)opcode_data); | |
| m_opcode.SetOpcode32(value32, eByteOrderInvalid); | |
| break; | |
| } | |
| case 64: { | |
| uint64_t value64 = *((uint64_t *)opcode_data); | |
| m_opcode.SetOpcode64(value64, eByteOrderInvalid); | |
| break; | |
| } | |
| default: | |
| break; | |
| } | |
| } | |
| void PseudoInstruction::SetDescription(llvm::StringRef description) { | |
| m_description = description; | |
| } | |
| Instruction::Operand Instruction::Operand::BuildRegister(ConstString &r) { | |
| Operand ret; | |
| ret.m_type = Type::Register; | |
| ret.m_register = r; | |
| return ret; | |
| } | |
| Instruction::Operand Instruction::Operand::BuildImmediate(lldb::addr_t imm, | |
| bool neg) { | |
| Operand ret; | |
| ret.m_type = Type::Immediate; | |
| ret.m_immediate = imm; | |
| ret.m_negative = neg; | |
| return ret; | |
| } | |
| Instruction::Operand Instruction::Operand::BuildImmediate(int64_t imm) { | |
| Operand ret; | |
| ret.m_type = Type::Immediate; | |
| if (imm < 0) { | |
| ret.m_immediate = -imm; | |
| ret.m_negative = true; | |
| } else { | |
| ret.m_immediate = imm; | |
| ret.m_negative = false; | |
| } | |
| return ret; | |
| } | |
| Instruction::Operand | |
| Instruction::Operand::BuildDereference(const Operand &ref) { | |
| Operand ret; | |
| ret.m_type = Type::Dereference; | |
| ret.m_children = {ref}; | |
| return ret; | |
| } | |
| Instruction::Operand Instruction::Operand::BuildSum(const Operand &lhs, | |
| const Operand &rhs) { | |
| Operand ret; | |
| ret.m_type = Type::Sum; | |
| ret.m_children = {lhs, rhs}; | |
| return ret; | |
| } | |
| Instruction::Operand Instruction::Operand::BuildProduct(const Operand &lhs, | |
| const Operand &rhs) { | |
| Operand ret; | |
| ret.m_type = Type::Product; | |
| ret.m_children = {lhs, rhs}; | |
| return ret; | |
| } | |
| std::function<bool(const Instruction::Operand &)> | |
| lldb_private::OperandMatchers::MatchBinaryOp( | |
| std::function<bool(const Instruction::Operand &)> base, | |
| std::function<bool(const Instruction::Operand &)> left, | |
| std::function<bool(const Instruction::Operand &)> right) { | |
| return [base, left, right](const Instruction::Operand &op) -> bool { | |
| return (base(op) && op.m_children.size() == 2 && | |
| ((left(op.m_children[0]) && right(op.m_children[1])) || | |
| (left(op.m_children[1]) && right(op.m_children[0])))); | |
| }; | |
| } | |
| std::function<bool(const Instruction::Operand &)> | |
| lldb_private::OperandMatchers::MatchUnaryOp( | |
| std::function<bool(const Instruction::Operand &)> base, | |
| std::function<bool(const Instruction::Operand &)> child) { | |
| return [base, child](const Instruction::Operand &op) -> bool { | |
| return (base(op) && op.m_children.size() == 1 && child(op.m_children[0])); | |
| }; | |
| } | |
| std::function<bool(const Instruction::Operand &)> | |
| lldb_private::OperandMatchers::MatchRegOp(const RegisterInfo &info) { | |
| return [&info](const Instruction::Operand &op) { | |
| return (op.m_type == Instruction::Operand::Type::Register && | |
| (op.m_register == ConstString(info.name) || | |
| op.m_register == ConstString(info.alt_name))); | |
| }; | |
| } | |
| std::function<bool(const Instruction::Operand &)> | |
| lldb_private::OperandMatchers::FetchRegOp(ConstString ®) { | |
| return [®](const Instruction::Operand &op) { | |
| if (op.m_type != Instruction::Operand::Type::Register) { | |
| return false; | |
| } | |
| reg = op.m_register; | |
| return true; | |
| }; | |
| } | |
| std::function<bool(const Instruction::Operand &)> | |
| lldb_private::OperandMatchers::MatchImmOp(int64_t imm) { | |
| return [imm](const Instruction::Operand &op) { | |
| return (op.m_type == Instruction::Operand::Type::Immediate && | |
| ((op.m_negative && op.m_immediate == (uint64_t)-imm) || | |
| (!op.m_negative && op.m_immediate == (uint64_t)imm))); | |
| }; | |
| } | |
| std::function<bool(const Instruction::Operand &)> | |
| lldb_private::OperandMatchers::FetchImmOp(int64_t &imm) { | |
| return [&imm](const Instruction::Operand &op) { | |
| if (op.m_type != Instruction::Operand::Type::Immediate) { | |
| return false; | |
| } | |
| if (op.m_negative) { | |
| imm = -((int64_t)op.m_immediate); | |
| } else { | |
| imm = ((int64_t)op.m_immediate); | |
| } | |
| return true; | |
| }; | |
| } | |
| std::function<bool(const Instruction::Operand &)> | |
| lldb_private::OperandMatchers::MatchOpType(Instruction::Operand::Type type) { | |
| return [type](const Instruction::Operand &op) { return op.m_type == type; }; | |
| } |