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authorKate Stone <katherine.stone@apple.com>2016-09-06 20:57:50 +0000
committerKate Stone <katherine.stone@apple.com>2016-09-06 20:57:50 +0000
commitb9c1b51e45b845debb76d8658edabca70ca56079 (patch)
treedfcb5a13ef2b014202340f47036da383eaee74aa /lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
parentd5aa73376966339caad04013510626ec2e42c760 (diff)
downloadbcm5719-llvm-b9c1b51e45b845debb76d8658edabca70ca56079.tar.gz
bcm5719-llvm-b9c1b51e45b845debb76d8658edabca70ca56079.zip
*** This commit represents a complete reformatting of the LLDB source code
*** to conform to clang-format’s LLVM style. This kind of mass change has *** two obvious implications: Firstly, merging this particular commit into a downstream fork may be a huge effort. Alternatively, it may be worth merging all changes up to this commit, performing the same reformatting operation locally, and then discarding the merge for this particular commit. The commands used to accomplish this reformatting were as follows (with current working directory as the root of the repository): find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} + find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ; The version of clang-format used was 3.9.0, and autopep8 was 1.2.4. Secondly, “blame” style tools will generally point to this commit instead of a meaningful prior commit. There are alternatives available that will attempt to look through this change and find the appropriate prior commit. YMMV. llvm-svn: 280751
Diffstat (limited to 'lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp')
-rw-r--r--lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp1151
1 files changed, 554 insertions, 597 deletions
diff --git a/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp b/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
index 72adf757627..8ea2b918902 100644
--- a/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
+++ b/lldb/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
@@ -1,4 +1,5 @@
-//===-- UnwindAssemblyInstEmulation.cpp --------------------------*- C++ -*-===//
+//===-- UnwindAssemblyInstEmulation.cpp --------------------------*- C++
+//-*-===//
//
// The LLVM Compiler Infrastructure
//
@@ -21,658 +22,614 @@
#include "lldb/Core/StreamString.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Process.h"
-#include "lldb/Target/Thread.h"
#include "lldb/Target/Target.h"
+#include "lldb/Target/Thread.h"
using namespace lldb;
using namespace lldb_private;
-
-
//-----------------------------------------------------------------------------------------------
-// UnwindAssemblyInstEmulation method definitions
+// UnwindAssemblyInstEmulation method definitions
//-----------------------------------------------------------------------------------------------
-bool
-UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly (AddressRange& range,
- Thread& thread,
- UnwindPlan& unwind_plan)
-{
- if (range.GetByteSize() > 0 &&
- range.GetBaseAddress().IsValid() &&
- m_inst_emulator_ap.get())
- {
-
- // The instruction emulation subclass setup the unwind plan for the
- // first instruction.
- m_inst_emulator_ap->CreateFunctionEntryUnwind (unwind_plan);
-
- // CreateFunctionEntryUnwind should have created the first row. If it
- // doesn't, then we are done.
- if (unwind_plan.GetRowCount() == 0)
- return false;
-
- ExecutionContext exe_ctx;
- thread.CalculateExecutionContext(exe_ctx);
- const bool prefer_file_cache = true;
- DisassemblerSP disasm_sp (Disassembler::DisassembleRange (m_arch,
- NULL,
- NULL,
- exe_ctx,
- range,
- prefer_file_cache));
-
- Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND));
-
- if (disasm_sp)
- {
-
- m_range_ptr = &range;
- m_thread_ptr = &thread;
- m_unwind_plan_ptr = &unwind_plan;
-
- const uint32_t addr_byte_size = m_arch.GetAddressByteSize();
- const bool show_address = true;
- const bool show_bytes = true;
- m_inst_emulator_ap->GetRegisterInfo (unwind_plan.GetRegisterKind(),
- unwind_plan.GetInitialCFARegister(),
- m_cfa_reg_info);
-
- m_fp_is_cfa = false;
- m_register_values.clear();
- m_pushed_regs.clear();
-
- // Initialize the CFA with a known value. In the 32 bit case
- // it will be 0x80000000, and in the 64 bit case 0x8000000000000000.
- // We use the address byte size to be safe for any future address sizes
- m_initial_sp = (1ull << ((addr_byte_size * 8) - 1));
- RegisterValue cfa_reg_value;
- cfa_reg_value.SetUInt (m_initial_sp, m_cfa_reg_info.byte_size);
- SetRegisterValue (m_cfa_reg_info, cfa_reg_value);
-
- const InstructionList &inst_list = disasm_sp->GetInstructionList ();
- const size_t num_instructions = inst_list.GetSize();
-
- if (num_instructions > 0)
- {
- Instruction *inst = inst_list.GetInstructionAtIndex (0).get();
- const lldb::addr_t base_addr = inst->GetAddress().GetFileAddress();
-
- // Map for storing the unwind plan row and the value of the registers at a given offset.
- // When we see a forward branch we add a new entry to this map with the actual unwind plan
- // row and register context for the target address of the branch as the current data have
- // to be valid for the target address of the branch too if we are in the same function.
- std::map<lldb::addr_t, std::pair<UnwindPlan::RowSP, RegisterValueMap>> saved_unwind_states;
-
- // Make a copy of the current instruction Row and save it in m_curr_row
- // so we can add updates as we process the instructions.
- UnwindPlan::RowSP last_row = unwind_plan.GetLastRow();
+bool UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly(
+ AddressRange &range, Thread &thread, UnwindPlan &unwind_plan) {
+ if (range.GetByteSize() > 0 && range.GetBaseAddress().IsValid() &&
+ m_inst_emulator_ap.get()) {
+
+ // The instruction emulation subclass setup the unwind plan for the
+ // first instruction.
+ m_inst_emulator_ap->CreateFunctionEntryUnwind(unwind_plan);
+
+ // CreateFunctionEntryUnwind should have created the first row. If it
+ // doesn't, then we are done.
+ if (unwind_plan.GetRowCount() == 0)
+ return false;
+
+ ExecutionContext exe_ctx;
+ thread.CalculateExecutionContext(exe_ctx);
+ const bool prefer_file_cache = true;
+ DisassemblerSP disasm_sp(Disassembler::DisassembleRange(
+ m_arch, NULL, NULL, exe_ctx, range, prefer_file_cache));
+
+ Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
+
+ if (disasm_sp) {
+
+ m_range_ptr = &range;
+ m_thread_ptr = &thread;
+ m_unwind_plan_ptr = &unwind_plan;
+
+ const uint32_t addr_byte_size = m_arch.GetAddressByteSize();
+ const bool show_address = true;
+ const bool show_bytes = true;
+ m_inst_emulator_ap->GetRegisterInfo(unwind_plan.GetRegisterKind(),
+ unwind_plan.GetInitialCFARegister(),
+ m_cfa_reg_info);
+
+ m_fp_is_cfa = false;
+ m_register_values.clear();
+ m_pushed_regs.clear();
+
+ // Initialize the CFA with a known value. In the 32 bit case
+ // it will be 0x80000000, and in the 64 bit case 0x8000000000000000.
+ // We use the address byte size to be safe for any future address sizes
+ m_initial_sp = (1ull << ((addr_byte_size * 8) - 1));
+ RegisterValue cfa_reg_value;
+ cfa_reg_value.SetUInt(m_initial_sp, m_cfa_reg_info.byte_size);
+ SetRegisterValue(m_cfa_reg_info, cfa_reg_value);
+
+ const InstructionList &inst_list = disasm_sp->GetInstructionList();
+ const size_t num_instructions = inst_list.GetSize();
+
+ if (num_instructions > 0) {
+ Instruction *inst = inst_list.GetInstructionAtIndex(0).get();
+ const lldb::addr_t base_addr = inst->GetAddress().GetFileAddress();
+
+ // Map for storing the unwind plan row and the value of the registers at
+ // a given offset.
+ // When we see a forward branch we add a new entry to this map with the
+ // actual unwind plan
+ // row and register context for the target address of the branch as the
+ // current data have
+ // to be valid for the target address of the branch too if we are in the
+ // same function.
+ std::map<lldb::addr_t, std::pair<UnwindPlan::RowSP, RegisterValueMap>>
+ saved_unwind_states;
+
+ // Make a copy of the current instruction Row and save it in m_curr_row
+ // so we can add updates as we process the instructions.
+ UnwindPlan::RowSP last_row = unwind_plan.GetLastRow();
+ UnwindPlan::Row *newrow = new UnwindPlan::Row;
+ if (last_row.get())
+ *newrow = *last_row.get();
+ m_curr_row.reset(newrow);
+
+ // Add the initial state to the save list with offset 0.
+ saved_unwind_states.insert({0, {last_row, m_register_values}});
+
+ // cache the pc register number (in whatever register numbering this
+ // UnwindPlan uses) for
+ // quick reference during instruction parsing.
+ RegisterInfo pc_reg_info;
+ m_inst_emulator_ap->GetRegisterInfo(
+ eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info);
+
+ // cache the return address register number (in whatever register
+ // numbering this UnwindPlan uses) for
+ // quick reference during instruction parsing.
+ RegisterInfo ra_reg_info;
+ m_inst_emulator_ap->GetRegisterInfo(
+ eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA, ra_reg_info);
+
+ // The architecture dependent condition code of the last processed
+ // instruction.
+ EmulateInstruction::InstructionCondition last_condition =
+ EmulateInstruction::UnconditionalCondition;
+ lldb::addr_t condition_block_start_offset = 0;
+
+ for (size_t idx = 0; idx < num_instructions; ++idx) {
+ m_curr_row_modified = false;
+ m_forward_branch_offset = 0;
+
+ inst = inst_list.GetInstructionAtIndex(idx).get();
+ if (inst) {
+ lldb::addr_t current_offset =
+ inst->GetAddress().GetFileAddress() - base_addr;
+ auto it = saved_unwind_states.upper_bound(current_offset);
+ assert(it != saved_unwind_states.begin() &&
+ "Unwind row for the function entry missing");
+ --it; // Move it to the row corresponding to the current offset
+
+ // If the offset of m_curr_row don't match with the offset we see in
+ // saved_unwind_states
+ // then we have to update m_curr_row and m_register_values based on
+ // the saved values. It
+ // is happenning after we processed an epilogue and a return to
+ // caller instruction.
+ if (it->second.first->GetOffset() != m_curr_row->GetOffset()) {
+ UnwindPlan::Row *newrow = new UnwindPlan::Row;
+ *newrow = *it->second.first;
+ m_curr_row.reset(newrow);
+ m_register_values = it->second.second;
+ }
+
+ m_inst_emulator_ap->SetInstruction(
+ inst->GetOpcode(), inst->GetAddress(), exe_ctx.GetTargetPtr());
+
+ if (last_condition !=
+ m_inst_emulator_ap->GetInstructionCondition()) {
+ if (m_inst_emulator_ap->GetInstructionCondition() !=
+ EmulateInstruction::UnconditionalCondition &&
+ saved_unwind_states.count(current_offset) == 0) {
+ // If we don't have a saved row for the current offset then save
+ // our
+ // current state because we will have to restore it after the
+ // conditional block.
+ auto new_row =
+ std::make_shared<UnwindPlan::Row>(*m_curr_row.get());
+ saved_unwind_states.insert(
+ {current_offset, {new_row, m_register_values}});
+ }
+
+ // If the last instruction was conditional with a different
+ // condition
+ // then the then current condition then restore the condition.
+ if (last_condition !=
+ EmulateInstruction::UnconditionalCondition) {
+ const auto &saved_state =
+ saved_unwind_states.at(condition_block_start_offset);
+ m_curr_row =
+ std::make_shared<UnwindPlan::Row>(*saved_state.first);
+ m_curr_row->SetOffset(current_offset);
+ m_register_values = saved_state.second;
+ bool replace_existing =
+ true; // The last instruction might already
+ // created a row for this offset and
+ // we want to overwrite it.
+ unwind_plan.InsertRow(
+ std::make_shared<UnwindPlan::Row>(*m_curr_row),
+ replace_existing);
+ }
+
+ // We are starting a new conditional block at the catual offset
+ condition_block_start_offset = current_offset;
+ }
+
+ if (log && log->GetVerbose()) {
+ StreamString strm;
+ lldb_private::FormatEntity::Entry format;
+ FormatEntity::Parse("${frame.pc}: ", format);
+ inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize(), show_address,
+ show_bytes, NULL, NULL, NULL, &format, 0);
+ log->PutCString(strm.GetData());
+ }
+
+ last_condition = m_inst_emulator_ap->GetInstructionCondition();
+
+ m_inst_emulator_ap->EvaluateInstruction(
+ eEmulateInstructionOptionIgnoreConditions);
+
+ // If the current instruction is a branch forward then save the
+ // current CFI information
+ // for the offset where we are branching.
+ if (m_forward_branch_offset != 0 &&
+ range.ContainsFileAddress(inst->GetAddress().GetFileAddress() +
+ m_forward_branch_offset)) {
+ auto newrow =
+ std::make_shared<UnwindPlan::Row>(*m_curr_row.get());
+ newrow->SetOffset(current_offset + m_forward_branch_offset);
+ saved_unwind_states.insert(
+ {current_offset + m_forward_branch_offset,
+ {newrow, m_register_values}});
+ unwind_plan.InsertRow(newrow);
+ }
+
+ // Were there any changes to the CFI while evaluating this
+ // instruction?
+ if (m_curr_row_modified) {
+ // Save the modified row if we don't already have a CFI row in the
+ // currennt address
+ if (saved_unwind_states.count(
+ current_offset + inst->GetOpcode().GetByteSize()) == 0) {
+ m_curr_row->SetOffset(current_offset +
+ inst->GetOpcode().GetByteSize());
+ unwind_plan.InsertRow(m_curr_row);
+ saved_unwind_states.insert(
+ {current_offset + inst->GetOpcode().GetByteSize(),
+ {m_curr_row, m_register_values}});
+
+ // Allocate a new Row for m_curr_row, copy the current state
+ // into it
UnwindPlan::Row *newrow = new UnwindPlan::Row;
- if (last_row.get())
- *newrow = *last_row.get();
+ *newrow = *m_curr_row.get();
m_curr_row.reset(newrow);
-
- // Add the initial state to the save list with offset 0.
- saved_unwind_states.insert({0, {last_row, m_register_values}});
-
- // cache the pc register number (in whatever register numbering this UnwindPlan uses) for
- // quick reference during instruction parsing.
- RegisterInfo pc_reg_info;
- m_inst_emulator_ap->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info);
-
- // cache the return address register number (in whatever register numbering this UnwindPlan uses) for
- // quick reference during instruction parsing.
- RegisterInfo ra_reg_info;
- m_inst_emulator_ap->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA, ra_reg_info);
-
- // The architecture dependent condition code of the last processed instruction.
- EmulateInstruction::InstructionCondition last_condition = EmulateInstruction::UnconditionalCondition;
- lldb::addr_t condition_block_start_offset = 0;
-
- for (size_t idx=0; idx<num_instructions; ++idx)
- {
- m_curr_row_modified = false;
- m_forward_branch_offset = 0;
-
- inst = inst_list.GetInstructionAtIndex (idx).get();
- if (inst)
- {
- lldb::addr_t current_offset = inst->GetAddress().GetFileAddress() - base_addr;
- auto it = saved_unwind_states.upper_bound(current_offset);
- assert(it != saved_unwind_states.begin() && "Unwind row for the function entry missing");
- --it; // Move it to the row corresponding to the current offset
-
- // If the offset of m_curr_row don't match with the offset we see in saved_unwind_states
- // then we have to update m_curr_row and m_register_values based on the saved values. It
- // is happenning after we processed an epilogue and a return to caller instruction.
- if (it->second.first->GetOffset() != m_curr_row->GetOffset())
- {
- UnwindPlan::Row *newrow = new UnwindPlan::Row;
- *newrow = *it->second.first;
- m_curr_row.reset(newrow);
- m_register_values = it->second.second;
- }
-
- m_inst_emulator_ap->SetInstruction (inst->GetOpcode(),
- inst->GetAddress(),
- exe_ctx.GetTargetPtr());
-
- if (last_condition != m_inst_emulator_ap->GetInstructionCondition())
- {
- if (m_inst_emulator_ap->GetInstructionCondition() != EmulateInstruction::UnconditionalCondition &&
- saved_unwind_states.count(current_offset) == 0)
- {
- // If we don't have a saved row for the current offset then save our
- // current state because we will have to restore it after the
- // conditional block.
- auto new_row = std::make_shared<UnwindPlan::Row>(*m_curr_row.get());
- saved_unwind_states.insert({current_offset, {new_row, m_register_values}});
- }
-
- // If the last instruction was conditional with a different condition
- // then the then current condition then restore the condition.
- if (last_condition != EmulateInstruction::UnconditionalCondition)
- {
- const auto& saved_state = saved_unwind_states.at(condition_block_start_offset);
- m_curr_row = std::make_shared<UnwindPlan::Row>(*saved_state.first);
- m_curr_row->SetOffset(current_offset);
- m_register_values = saved_state.second;
- bool replace_existing = true; // The last instruction might already
- // created a row for this offset and
- // we want to overwrite it.
- unwind_plan.InsertRow(std::make_shared<UnwindPlan::Row>(*m_curr_row), replace_existing);
- }
-
- // We are starting a new conditional block at the catual offset
- condition_block_start_offset = current_offset;
- }
-
- if (log && log->GetVerbose ())
- {
- StreamString strm;
- lldb_private::FormatEntity::Entry format;
- FormatEntity::Parse("${frame.pc}: ", format);
- inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize (), show_address, show_bytes, NULL, NULL, NULL, &format, 0);
- log->PutCString (strm.GetData());
- }
-
- last_condition = m_inst_emulator_ap->GetInstructionCondition();
-
- m_inst_emulator_ap->EvaluateInstruction (eEmulateInstructionOptionIgnoreConditions);
-
- // If the current instruction is a branch forward then save the current CFI information
- // for the offset where we are branching.
- if (m_forward_branch_offset != 0 && range.ContainsFileAddress(inst->GetAddress().GetFileAddress() + m_forward_branch_offset))
- {
- auto newrow = std::make_shared<UnwindPlan::Row>(*m_curr_row.get());
- newrow->SetOffset(current_offset + m_forward_branch_offset);
- saved_unwind_states.insert({current_offset + m_forward_branch_offset, {newrow, m_register_values}});
- unwind_plan.InsertRow(newrow);
- }
-
- // Were there any changes to the CFI while evaluating this instruction?
- if (m_curr_row_modified)
- {
- // Save the modified row if we don't already have a CFI row in the currennt address
- if (saved_unwind_states.count(current_offset + inst->GetOpcode().GetByteSize()) == 0)
- {
- m_curr_row->SetOffset (current_offset + inst->GetOpcode().GetByteSize());
- unwind_plan.InsertRow (m_curr_row);
- saved_unwind_states.insert({current_offset + inst->GetOpcode().GetByteSize(), {m_curr_row, m_register_values}});
-
- // Allocate a new Row for m_curr_row, copy the current state into it
- UnwindPlan::Row *newrow = new UnwindPlan::Row;
- *newrow = *m_curr_row.get();
- m_curr_row.reset(newrow);
- }
- }
- }
- }
+ }
}
+ }
}
-
- if (log && log->GetVerbose ())
- {
- StreamString strm;
- lldb::addr_t base_addr = range.GetBaseAddress().GetLoadAddress(thread.CalculateTarget().get());
- strm.Printf ("Resulting unwind rows for [0x%" PRIx64 " - 0x%" PRIx64 "):", base_addr, base_addr + range.GetByteSize());
- unwind_plan.Dump(strm, &thread, base_addr);
- log->PutCString (strm.GetData());
- }
- return unwind_plan.GetRowCount() > 0;
+ }
+ }
+
+ if (log && log->GetVerbose()) {
+ StreamString strm;
+ lldb::addr_t base_addr =
+ range.GetBaseAddress().GetLoadAddress(thread.CalculateTarget().get());
+ strm.Printf("Resulting unwind rows for [0x%" PRIx64 " - 0x%" PRIx64 "):",
+ base_addr, base_addr + range.GetByteSize());
+ unwind_plan.Dump(strm, &thread, base_addr);
+ log->PutCString(strm.GetData());
}
- return false;
+ return unwind_plan.GetRowCount() > 0;
+ }
+ return false;
}
-bool
-UnwindAssemblyInstEmulation::AugmentUnwindPlanFromCallSite (AddressRange& func,
- Thread& thread,
- UnwindPlan& unwind_plan)
-{
- return false;
+bool UnwindAssemblyInstEmulation::AugmentUnwindPlanFromCallSite(
+ AddressRange &func, Thread &thread, UnwindPlan &unwind_plan) {
+ return false;
}
-bool
-UnwindAssemblyInstEmulation::GetFastUnwindPlan (AddressRange& func,
- Thread& thread,
- UnwindPlan &unwind_plan)
-{
- return false;
+bool UnwindAssemblyInstEmulation::GetFastUnwindPlan(AddressRange &func,
+ Thread &thread,
+ UnwindPlan &unwind_plan) {
+ return false;
}
-bool
-UnwindAssemblyInstEmulation::FirstNonPrologueInsn (AddressRange& func,
- const ExecutionContext &exe_ctx,
- Address& first_non_prologue_insn)
-{
- return false;
+bool UnwindAssemblyInstEmulation::FirstNonPrologueInsn(
+ AddressRange &func, const ExecutionContext &exe_ctx,
+ Address &first_non_prologue_insn) {
+ return false;
}
UnwindAssembly *
-UnwindAssemblyInstEmulation::CreateInstance (const ArchSpec &arch)
-{
- std::unique_ptr<EmulateInstruction> inst_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypePrologueEpilogue, NULL));
- // Make sure that all prologue instructions are handled
- if (inst_emulator_ap.get())
- return new UnwindAssemblyInstEmulation (arch, inst_emulator_ap.release());
- return NULL;
+UnwindAssemblyInstEmulation::CreateInstance(const ArchSpec &arch) {
+ std::unique_ptr<EmulateInstruction> inst_emulator_ap(
+ EmulateInstruction::FindPlugin(arch, eInstructionTypePrologueEpilogue,
+ NULL));
+ // Make sure that all prologue instructions are handled
+ if (inst_emulator_ap.get())
+ return new UnwindAssemblyInstEmulation(arch, inst_emulator_ap.release());
+ return NULL;
}
-
//------------------------------------------------------------------
// PluginInterface protocol in UnwindAssemblyParser_x86
//------------------------------------------------------------------
-ConstString
-UnwindAssemblyInstEmulation::GetPluginName()
-{
- return GetPluginNameStatic();
+ConstString UnwindAssemblyInstEmulation::GetPluginName() {
+ return GetPluginNameStatic();
}
-uint32_t
-UnwindAssemblyInstEmulation::GetPluginVersion()
-{
- return 1;
-}
+uint32_t UnwindAssemblyInstEmulation::GetPluginVersion() { return 1; }
-void
-UnwindAssemblyInstEmulation::Initialize()
-{
- PluginManager::RegisterPlugin (GetPluginNameStatic(),
- GetPluginDescriptionStatic(),
- CreateInstance);
+void UnwindAssemblyInstEmulation::Initialize() {
+ PluginManager::RegisterPlugin(GetPluginNameStatic(),
+ GetPluginDescriptionStatic(), CreateInstance);
}
-void
-UnwindAssemblyInstEmulation::Terminate()
-{
- PluginManager::UnregisterPlugin (CreateInstance);
+void UnwindAssemblyInstEmulation::Terminate() {
+ PluginManager::UnregisterPlugin(CreateInstance);
}
-
-ConstString
-UnwindAssemblyInstEmulation::GetPluginNameStatic()
-{
- static ConstString g_name("inst-emulation");
- return g_name;
+ConstString UnwindAssemblyInstEmulation::GetPluginNameStatic() {
+ static ConstString g_name("inst-emulation");
+ return g_name;
}
-const char *
-UnwindAssemblyInstEmulation::GetPluginDescriptionStatic()
-{
- return "Instruction emulation based unwind information.";
+const char *UnwindAssemblyInstEmulation::GetPluginDescriptionStatic() {
+ return "Instruction emulation based unwind information.";
}
-
-uint64_t
-UnwindAssemblyInstEmulation::MakeRegisterKindValuePair (const RegisterInfo &reg_info)
-{
- lldb::RegisterKind reg_kind;
- uint32_t reg_num;
- if (EmulateInstruction::GetBestRegisterKindAndNumber (&reg_info, reg_kind, reg_num))
- return (uint64_t)reg_kind << 24 | reg_num;
- return 0ull;
+uint64_t UnwindAssemblyInstEmulation::MakeRegisterKindValuePair(
+ const RegisterInfo &reg_info) {
+ lldb::RegisterKind reg_kind;
+ uint32_t reg_num;
+ if (EmulateInstruction::GetBestRegisterKindAndNumber(&reg_info, reg_kind,
+ reg_num))
+ return (uint64_t)reg_kind << 24 | reg_num;
+ return 0ull;
}
-void
-UnwindAssemblyInstEmulation::SetRegisterValue (const RegisterInfo &reg_info, const RegisterValue &reg_value)
-{
- m_register_values[MakeRegisterKindValuePair (reg_info)] = reg_value;
+void UnwindAssemblyInstEmulation::SetRegisterValue(
+ const RegisterInfo &reg_info, const RegisterValue &reg_value) {
+ m_register_values[MakeRegisterKindValuePair(reg_info)] = reg_value;
}
-bool
-UnwindAssemblyInstEmulation::GetRegisterValue (const RegisterInfo &reg_info, RegisterValue &reg_value)
-{
- const uint64_t reg_id = MakeRegisterKindValuePair (reg_info);
- RegisterValueMap::const_iterator pos = m_register_values.find(reg_id);
- if (pos != m_register_values.end())
- {
- reg_value = pos->second;
- return true; // We had a real value that comes from an opcode that wrote
- // to it...
- }
- // We are making up a value that is recognizable...
- reg_value.SetUInt(reg_id, reg_info.byte_size);
- return false;
+bool UnwindAssemblyInstEmulation::GetRegisterValue(const RegisterInfo &reg_info,
+ RegisterValue &reg_value) {
+ const uint64_t reg_id = MakeRegisterKindValuePair(reg_info);
+ RegisterValueMap::const_iterator pos = m_register_values.find(reg_id);
+ if (pos != m_register_values.end()) {
+ reg_value = pos->second;
+ return true; // We had a real value that comes from an opcode that wrote
+ // to it...
+ }
+ // We are making up a value that is recognizable...
+ reg_value.SetUInt(reg_id, reg_info.byte_size);
+ return false;
}
-
-size_t
-UnwindAssemblyInstEmulation::ReadMemory (EmulateInstruction *instruction,
- void *baton,
- const EmulateInstruction::Context &context,
- lldb::addr_t addr,
- void *dst,
- size_t dst_len)
-{
- Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND));
-
- if (log && log->GetVerbose ())
- {
- StreamString strm;
- strm.Printf ("UnwindAssemblyInstEmulation::ReadMemory (addr = 0x%16.16" PRIx64 ", dst = %p, dst_len = %" PRIu64 ", context = ",
- addr,
- dst,
- (uint64_t)dst_len);
- context.Dump(strm, instruction);
- log->PutCString (strm.GetData ());
- }
- memset (dst, 0, dst_len);
- return dst_len;
+size_t UnwindAssemblyInstEmulation::ReadMemory(
+ EmulateInstruction *instruction, void *baton,
+ const EmulateInstruction::Context &context, lldb::addr_t addr, void *dst,
+ size_t dst_len) {
+ Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
+
+ if (log && log->GetVerbose()) {
+ StreamString strm;
+ strm.Printf(
+ "UnwindAssemblyInstEmulation::ReadMemory (addr = 0x%16.16" PRIx64
+ ", dst = %p, dst_len = %" PRIu64 ", context = ",
+ addr, dst, (uint64_t)dst_len);
+ context.Dump(strm, instruction);
+ log->PutCString(strm.GetData());
+ }
+ memset(dst, 0, dst_len);
+ return dst_len;
}
-size_t
-UnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction,
- void *baton,
- const EmulateInstruction::Context &context,
- lldb::addr_t addr,
- const void *dst,
- size_t dst_len)
-{
- if (baton && dst && dst_len)
- return ((UnwindAssemblyInstEmulation *)baton)->WriteMemory (instruction, context, addr, dst, dst_len);
- return 0;
+size_t UnwindAssemblyInstEmulation::WriteMemory(
+ EmulateInstruction *instruction, void *baton,
+ const EmulateInstruction::Context &context, lldb::addr_t addr,
+ const void *dst, size_t dst_len) {
+ if (baton && dst && dst_len)
+ return ((UnwindAssemblyInstEmulation *)baton)
+ ->WriteMemory(instruction, context, addr, dst, dst_len);
+ return 0;
}
-size_t
-UnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction,
- const EmulateInstruction::Context &context,
- lldb::addr_t addr,
- const void *dst,
- size_t dst_len)
-{
- DataExtractor data (dst,
- dst_len,
- instruction->GetArchitecture ().GetByteOrder(),
- instruction->GetArchitecture ().GetAddressByteSize());
-
- Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND));
-
- if (log && log->GetVerbose ())
- {
- StreamString strm;
-
- strm.PutCString ("UnwindAssemblyInstEmulation::WriteMemory (");
- data.Dump(&strm, 0, eFormatBytes, 1, dst_len, UINT32_MAX, addr, 0, 0);
- strm.PutCString (", context = ");
- context.Dump(strm, instruction);
- log->PutCString (strm.GetData());
- }
-
- const bool cant_replace = false;
-
- switch (context.type)
- {
- default:
- case EmulateInstruction::eContextInvalid:
- case EmulateInstruction::eContextReadOpcode:
- case EmulateInstruction::eContextImmediate:
- case EmulateInstruction::eContextAdjustBaseRegister:
- case EmulateInstruction::eContextRegisterPlusOffset:
- case EmulateInstruction::eContextAdjustPC:
- case EmulateInstruction::eContextRegisterStore:
- case EmulateInstruction::eContextRegisterLoad:
- case EmulateInstruction::eContextRelativeBranchImmediate:
- case EmulateInstruction::eContextAbsoluteBranchRegister:
- case EmulateInstruction::eContextSupervisorCall:
- case EmulateInstruction::eContextTableBranchReadMemory:
- case EmulateInstruction::eContextWriteRegisterRandomBits:
- case EmulateInstruction::eContextWriteMemoryRandomBits:
- case EmulateInstruction::eContextArithmetic:
- case EmulateInstruction::eContextAdvancePC:
- case EmulateInstruction::eContextReturnFromException:
- case EmulateInstruction::eContextPopRegisterOffStack:
- case EmulateInstruction::eContextAdjustStackPointer:
- break;
-
- case EmulateInstruction::eContextPushRegisterOnStack:
- {
- uint32_t reg_num = LLDB_INVALID_REGNUM;
- uint32_t generic_regnum = LLDB_INVALID_REGNUM;
- if (context.info_type == EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset)
- {
- const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind();
- reg_num = context.info.RegisterToRegisterPlusOffset.data_reg.kinds[unwind_reg_kind];
- generic_regnum = context.info.RegisterToRegisterPlusOffset.data_reg.kinds[eRegisterKindGeneric];
- }
- else
- assert (!"unhandled case, add code to handle this!");
-
- if (reg_num != LLDB_INVALID_REGNUM && generic_regnum != LLDB_REGNUM_GENERIC_SP)
- {
- if (m_pushed_regs.find (reg_num) == m_pushed_regs.end())
- {
- m_pushed_regs[reg_num] = addr;
- const int32_t offset = addr - m_initial_sp;
- m_curr_row->SetRegisterLocationToAtCFAPlusOffset (reg_num, offset, cant_replace);
- m_curr_row_modified = true;
- }
- }
- }
- break;
-
+size_t UnwindAssemblyInstEmulation::WriteMemory(
+ EmulateInstruction *instruction, const EmulateInstruction::Context &context,
+ lldb::addr_t addr, const void *dst, size_t dst_len) {
+ DataExtractor data(dst, dst_len,
+ instruction->GetArchitecture().GetByteOrder(),
+ instruction->GetArchitecture().GetAddressByteSize());
+
+ Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
+
+ if (log && log->GetVerbose()) {
+ StreamString strm;
+
+ strm.PutCString("UnwindAssemblyInstEmulation::WriteMemory (");
+ data.Dump(&strm, 0, eFormatBytes, 1, dst_len, UINT32_MAX, addr, 0, 0);
+ strm.PutCString(", context = ");
+ context.Dump(strm, instruction);
+ log->PutCString(strm.GetData());
+ }
+
+ const bool cant_replace = false;
+
+ switch (context.type) {
+ default:
+ case EmulateInstruction::eContextInvalid:
+ case EmulateInstruction::eContextReadOpcode:
+ case EmulateInstruction::eContextImmediate:
+ case EmulateInstruction::eContextAdjustBaseRegister:
+ case EmulateInstruction::eContextRegisterPlusOffset:
+ case EmulateInstruction::eContextAdjustPC:
+ case EmulateInstruction::eContextRegisterStore:
+ case EmulateInstruction::eContextRegisterLoad:
+ case EmulateInstruction::eContextRelativeBranchImmediate:
+ case EmulateInstruction::eContextAbsoluteBranchRegister:
+ case EmulateInstruction::eContextSupervisorCall:
+ case EmulateInstruction::eContextTableBranchReadMemory:
+ case EmulateInstruction::eContextWriteRegisterRandomBits:
+ case EmulateInstruction::eContextWriteMemoryRandomBits:
+ case EmulateInstruction::eContextArithmetic:
+ case EmulateInstruction::eContextAdvancePC:
+ case EmulateInstruction::eContextReturnFromException:
+ case EmulateInstruction::eContextPopRegisterOffStack:
+ case EmulateInstruction::eContextAdjustStackPointer:
+ break;
+
+ case EmulateInstruction::eContextPushRegisterOnStack: {
+ uint32_t reg_num = LLDB_INVALID_REGNUM;
+ uint32_t generic_regnum = LLDB_INVALID_REGNUM;
+ if (context.info_type ==
+ EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset) {
+ const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind();
+ reg_num = context.info.RegisterToRegisterPlusOffset.data_reg
+ .kinds[unwind_reg_kind];
+ generic_regnum = context.info.RegisterToRegisterPlusOffset.data_reg
+ .kinds[eRegisterKindGeneric];
+ } else
+ assert(!"unhandled case, add code to handle this!");
+
+ if (reg_num != LLDB_INVALID_REGNUM &&
+ generic_regnum != LLDB_REGNUM_GENERIC_SP) {
+ if (m_pushed_regs.find(reg_num) == m_pushed_regs.end()) {
+ m_pushed_regs[reg_num] = addr;
+ const int32_t offset = addr - m_initial_sp;
+ m_curr_row->SetRegisterLocationToAtCFAPlusOffset(reg_num, offset,
+ cant_replace);
+ m_curr_row_modified = true;
+ }
}
+ } break;
+ }
- return dst_len;
+ return dst_len;
}
-bool
-UnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction,
- void *baton,
- const RegisterInfo *reg_info,
- RegisterValue &reg_value)
-{
-
- if (baton && reg_info)
- return ((UnwindAssemblyInstEmulation *)baton)->ReadRegister (instruction, reg_info, reg_value);
- return false;
+bool UnwindAssemblyInstEmulation::ReadRegister(EmulateInstruction *instruction,
+ void *baton,
+ const RegisterInfo *reg_info,
+ RegisterValue &reg_value) {
+
+ if (baton && reg_info)
+ return ((UnwindAssemblyInstEmulation *)baton)
+ ->ReadRegister(instruction, reg_info, reg_value);
+ return false;
}
-bool
-UnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction,
- const RegisterInfo *reg_info,
- RegisterValue &reg_value)
-{
- bool synthetic = GetRegisterValue (*reg_info, reg_value);
-
- Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND));
-
- if (log && log->GetVerbose ())
- {
-
- StreamString strm;
- strm.Printf ("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => synthetic_value = %i, value = ", reg_info->name, synthetic);
- reg_value.Dump(&strm, reg_info, false, false, eFormatDefault);
- log->PutCString(strm.GetData());
- }
- return true;
+bool UnwindAssemblyInstEmulation::ReadRegister(EmulateInstruction *instruction,
+ const RegisterInfo *reg_info,
+ RegisterValue &reg_value) {
+ bool synthetic = GetRegisterValue(*reg_info, reg_value);
+
+ Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
+
+ if (log && log->GetVerbose()) {
+
+ StreamString strm;
+ strm.Printf("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => "
+ "synthetic_value = %i, value = ",
+ reg_info->name, synthetic);
+ reg_value.Dump(&strm, reg_info, false, false, eFormatDefault);
+ log->PutCString(strm.GetData());
+ }
+ return true;
}
-bool
-UnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction,
- void *baton,
- const EmulateInstruction::Context &context,
- const RegisterInfo *reg_info,
- const RegisterValue &reg_value)
-{
- if (baton && reg_info)
- return ((UnwindAssemblyInstEmulation *)baton)->WriteRegister (instruction, context, reg_info, reg_value);
- return false;
+bool UnwindAssemblyInstEmulation::WriteRegister(
+ EmulateInstruction *instruction, void *baton,
+ const EmulateInstruction::Context &context, const RegisterInfo *reg_info,
+ const RegisterValue &reg_value) {
+ if (baton && reg_info)
+ return ((UnwindAssemblyInstEmulation *)baton)
+ ->WriteRegister(instruction, context, reg_info, reg_value);
+ return false;
}
-bool
-UnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction,
- const EmulateInstruction::Context &context,
- const RegisterInfo *reg_info,
- const RegisterValue &reg_value)
-{
- Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND));
-
- if (log && log->GetVerbose ())
- {
-
- StreamString strm;
- strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name);
- reg_value.Dump(&strm, reg_info, false, false, eFormatDefault);
- strm.PutCString (", context = ");
- context.Dump(strm, instruction);
- log->PutCString(strm.GetData());
+bool UnwindAssemblyInstEmulation::WriteRegister(
+ EmulateInstruction *instruction, const EmulateInstruction::Context &context,
+ const RegisterInfo *reg_info, const RegisterValue &reg_value) {
+ Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
+
+ if (log && log->GetVerbose()) {
+
+ StreamString strm;
+ strm.Printf(
+ "UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ",
+ reg_info->name);
+ reg_value.Dump(&strm, reg_info, false, false, eFormatDefault);
+ strm.PutCString(", context = ");
+ context.Dump(strm, instruction);
+ log->PutCString(strm.GetData());
+ }
+
+ SetRegisterValue(*reg_info, reg_value);
+
+ switch (context.type) {
+ case EmulateInstruction::eContextInvalid:
+ case EmulateInstruction::eContextReadOpcode:
+ case EmulateInstruction::eContextImmediate:
+ case EmulateInstruction::eContextAdjustBaseRegister:
+ case EmulateInstruction::eContextRegisterPlusOffset:
+ case EmulateInstruction::eContextAdjustPC:
+ case EmulateInstruction::eContextRegisterStore:
+ case EmulateInstruction::eContextSupervisorCall:
+ case EmulateInstruction::eContextTableBranchReadMemory:
+ case EmulateInstruction::eContextWriteRegisterRandomBits:
+ case EmulateInstruction::eContextWriteMemoryRandomBits:
+ case EmulateInstruction::eContextAdvancePC:
+ case EmulateInstruction::eContextReturnFromException:
+ case EmulateInstruction::eContextPushRegisterOnStack:
+ case EmulateInstruction::eContextRegisterLoad:
+ // {
+ // const uint32_t reg_num =
+ // reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
+ // if (reg_num != LLDB_INVALID_REGNUM)
+ // {
+ // const bool can_replace_only_if_unspecified = true;
+ //
+ // m_curr_row.SetRegisterLocationToUndefined (reg_num,
+ // can_replace_only_if_unspecified,
+ // can_replace_only_if_unspecified);
+ // m_curr_row_modified = true;
+ // }
+ // }
+ break;
+
+ case EmulateInstruction::eContextArithmetic: {
+ // If we adjusted the current frame pointer by a constant then adjust the
+ // CFA offset
+ // with the same amount.
+ lldb::RegisterKind kind = m_unwind_plan_ptr->GetRegisterKind();
+ if (m_fp_is_cfa && reg_info->kinds[kind] == m_cfa_reg_info.kinds[kind] &&
+ context.info_type == EmulateInstruction::eInfoTypeRegisterPlusOffset &&
+ context.info.RegisterPlusOffset.reg.kinds[kind] ==
+ m_cfa_reg_info.kinds[kind]) {
+ const int64_t offset = context.info.RegisterPlusOffset.signed_offset;
+ m_curr_row->GetCFAValue().IncOffset(-1 * offset);
+ m_curr_row_modified = true;
}
-
- SetRegisterValue (*reg_info, reg_value);
-
- switch (context.type)
- {
- case EmulateInstruction::eContextInvalid:
- case EmulateInstruction::eContextReadOpcode:
- case EmulateInstruction::eContextImmediate:
- case EmulateInstruction::eContextAdjustBaseRegister:
- case EmulateInstruction::eContextRegisterPlusOffset:
- case EmulateInstruction::eContextAdjustPC:
- case EmulateInstruction::eContextRegisterStore:
- case EmulateInstruction::eContextSupervisorCall:
- case EmulateInstruction::eContextTableBranchReadMemory:
- case EmulateInstruction::eContextWriteRegisterRandomBits:
- case EmulateInstruction::eContextWriteMemoryRandomBits:
- case EmulateInstruction::eContextAdvancePC:
- case EmulateInstruction::eContextReturnFromException:
- case EmulateInstruction::eContextPushRegisterOnStack:
- case EmulateInstruction::eContextRegisterLoad:
-// {
-// const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
-// if (reg_num != LLDB_INVALID_REGNUM)
-// {
-// const bool can_replace_only_if_unspecified = true;
-//
-// m_curr_row.SetRegisterLocationToUndefined (reg_num,
-// can_replace_only_if_unspecified,
-// can_replace_only_if_unspecified);
-// m_curr_row_modified = true;
-// }
-// }
- break;
-
- case EmulateInstruction::eContextArithmetic:
- {
- // If we adjusted the current frame pointer by a constant then adjust the CFA offset
- // with the same amount.
- lldb::RegisterKind kind = m_unwind_plan_ptr->GetRegisterKind();
- if (m_fp_is_cfa && reg_info->kinds[kind] == m_cfa_reg_info.kinds[kind] &&
- context.info_type == EmulateInstruction::eInfoTypeRegisterPlusOffset &&
- context.info.RegisterPlusOffset.reg.kinds[kind] == m_cfa_reg_info.kinds[kind])
- {
- const int64_t offset = context.info.RegisterPlusOffset.signed_offset;
- m_curr_row->GetCFAValue().IncOffset(-1 * offset);
- m_curr_row_modified = true;
- }
- }
- break;
-
- case EmulateInstruction::eContextAbsoluteBranchRegister:
- case EmulateInstruction::eContextRelativeBranchImmediate:
- {
- if (context.info_type == EmulateInstruction::eInfoTypeISAAndImmediate &&
- context.info.ISAAndImmediate.unsigned_data32 > 0)
- {
- m_forward_branch_offset = context.info.ISAAndImmediateSigned.signed_data32;
- }
- else if (context.info_type == EmulateInstruction::eInfoTypeISAAndImmediateSigned &&
- context.info.ISAAndImmediateSigned.signed_data32 > 0)
- {
- m_forward_branch_offset = context.info.ISAAndImmediate.unsigned_data32;
- }
- else if (context.info_type == EmulateInstruction::eInfoTypeImmediate &&
- context.info.unsigned_immediate > 0)
- {
- m_forward_branch_offset = context.info.unsigned_immediate;
- }
- else if (context.info_type == EmulateInstruction::eInfoTypeImmediateSigned &&
- context.info.signed_immediate > 0)
- {
- m_forward_branch_offset = context.info.signed_immediate;
- }
- }
- break;
-
- case EmulateInstruction::eContextPopRegisterOffStack:
- {
- const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
- const uint32_t generic_regnum = reg_info->kinds[eRegisterKindGeneric];
- if (reg_num != LLDB_INVALID_REGNUM && generic_regnum != LLDB_REGNUM_GENERIC_SP)
- {
- switch (context.info_type)
- {
- case EmulateInstruction::eInfoTypeAddress:
- if (m_pushed_regs.find(reg_num) != m_pushed_regs.end() &&
- context.info.address == m_pushed_regs[reg_num])
- {
- m_curr_row->SetRegisterLocationToSame(reg_num,
- false /*must_replace*/);
- m_curr_row_modified = true;
- }
- break;
- case EmulateInstruction::eInfoTypeISA:
- assert((generic_regnum == LLDB_REGNUM_GENERIC_PC ||
- generic_regnum == LLDB_REGNUM_GENERIC_FLAGS) &&
- "eInfoTypeISA used for poping a register other the the PC/FLAGS");
- if (generic_regnum != LLDB_REGNUM_GENERIC_FLAGS)
- {
- m_curr_row->SetRegisterLocationToSame(reg_num,
- false /*must_replace*/);
- m_curr_row_modified = true;
- }
- break;
- default:
- assert(false && "unhandled case, add code to handle this!");
- break;
- }
- }
- }
- break;
-
- case EmulateInstruction::eContextSetFramePointer:
- if (!m_fp_is_cfa)
- {
- m_fp_is_cfa = true;
- m_cfa_reg_info = *reg_info;
- const uint32_t cfa_reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
- assert (cfa_reg_num != LLDB_INVALID_REGNUM);
- m_curr_row->GetCFAValue().SetIsRegisterPlusOffset(cfa_reg_num, m_initial_sp -
- reg_value.GetAsUInt64());
- m_curr_row_modified = true;
- }
- break;
-
- case EmulateInstruction::eContextAdjustStackPointer:
- // If we have created a frame using the frame pointer, don't follow
- // subsequent adjustments to the stack pointer.
- if (!m_fp_is_cfa)
- {
- m_curr_row->GetCFAValue().SetIsRegisterPlusOffset(
- m_curr_row->GetCFAValue().GetRegisterNumber(),
- m_initial_sp - reg_value.GetAsUInt64());
- m_curr_row_modified = true;
- }
- break;
+ } break;
+
+ case EmulateInstruction::eContextAbsoluteBranchRegister:
+ case EmulateInstruction::eContextRelativeBranchImmediate: {
+ if (context.info_type == EmulateInstruction::eInfoTypeISAAndImmediate &&
+ context.info.ISAAndImmediate.unsigned_data32 > 0) {
+ m_forward_branch_offset =
+ context.info.ISAAndImmediateSigned.signed_data32;
+ } else if (context.info_type ==
+ EmulateInstruction::eInfoTypeISAAndImmediateSigned &&
+ context.info.ISAAndImmediateSigned.signed_data32 > 0) {
+ m_forward_branch_offset = context.info.ISAAndImmediate.unsigned_data32;
+ } else if (context.info_type == EmulateInstruction::eInfoTypeImmediate &&
+ context.info.unsigned_immediate > 0) {
+ m_forward_branch_offset = context.info.unsigned_immediate;
+ } else if (context.info_type ==
+ EmulateInstruction::eInfoTypeImmediateSigned &&
+ context.info.signed_immediate > 0) {
+ m_forward_branch_offset = context.info.signed_immediate;
+ }
+ } break;
+
+ case EmulateInstruction::eContextPopRegisterOffStack: {
+ const uint32_t reg_num =
+ reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
+ const uint32_t generic_regnum = reg_info->kinds[eRegisterKindGeneric];
+ if (reg_num != LLDB_INVALID_REGNUM &&
+ generic_regnum != LLDB_REGNUM_GENERIC_SP) {
+ switch (context.info_type) {
+ case EmulateInstruction::eInfoTypeAddress:
+ if (m_pushed_regs.find(reg_num) != m_pushed_regs.end() &&
+ context.info.address == m_pushed_regs[reg_num]) {
+ m_curr_row->SetRegisterLocationToSame(reg_num,
+ false /*must_replace*/);
+ m_curr_row_modified = true;
+ }
+ break;
+ case EmulateInstruction::eInfoTypeISA:
+ assert(
+ (generic_regnum == LLDB_REGNUM_GENERIC_PC ||
+ generic_regnum == LLDB_REGNUM_GENERIC_FLAGS) &&
+ "eInfoTypeISA used for poping a register other the the PC/FLAGS");
+ if (generic_regnum != LLDB_REGNUM_GENERIC_FLAGS) {
+ m_curr_row->SetRegisterLocationToSame(reg_num,
+ false /*must_replace*/);
+ m_curr_row_modified = true;
+ }
+ break;
+ default:
+ assert(false && "unhandled case, add code to handle this!");
+ break;
+ }
+ }
+ } break;
+
+ case EmulateInstruction::eContextSetFramePointer:
+ if (!m_fp_is_cfa) {
+ m_fp_is_cfa = true;
+ m_cfa_reg_info = *reg_info;
+ const uint32_t cfa_reg_num =
+ reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
+ assert(cfa_reg_num != LLDB_INVALID_REGNUM);
+ m_curr_row->GetCFAValue().SetIsRegisterPlusOffset(
+ cfa_reg_num, m_initial_sp - reg_value.GetAsUInt64());
+ m_curr_row_modified = true;
+ }
+ break;
+
+ case EmulateInstruction::eContextAdjustStackPointer:
+ // If we have created a frame using the frame pointer, don't follow
+ // subsequent adjustments to the stack pointer.
+ if (!m_fp_is_cfa) {
+ m_curr_row->GetCFAValue().SetIsRegisterPlusOffset(
+ m_curr_row->GetCFAValue().GetRegisterNumber(),
+ m_initial_sp - reg_value.GetAsUInt64());
+ m_curr_row_modified = true;
}
- return true;
+ break;
+ }
+ return true;
}
-
-
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