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//===-- SBInstructionList.cpp ---------------------------------------------===//
//
// 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/API/SBInstructionList.h"
#include "lldb/API/SBAddress.h"
#include "lldb/API/SBFile.h"
#include "lldb/API/SBInstruction.h"
#include "lldb/API/SBStream.h"
#include "lldb/Core/Disassembler.h"
#include "lldb/Core/Module.h"
#include "lldb/Host/StreamFile.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Utility/Instrumentation.h"
#include "lldb/Utility/Stream.h"
using namespace lldb;
using namespace lldb_private;
SBInstructionList::SBInstructionList() { LLDB_INSTRUMENT_VA(this); }
SBInstructionList::SBInstructionList(const SBInstructionList &rhs)
: m_opaque_sp(rhs.m_opaque_sp) {
LLDB_INSTRUMENT_VA(this, rhs);
}
const SBInstructionList &SBInstructionList::
operator=(const SBInstructionList &rhs) {
LLDB_INSTRUMENT_VA(this, rhs);
if (this != &rhs)
m_opaque_sp = rhs.m_opaque_sp;
return *this;
}
SBInstructionList::~SBInstructionList() = default;
bool SBInstructionList::IsValid() const {
LLDB_INSTRUMENT_VA(this);
return this->operator bool();
}
SBInstructionList::operator bool() const {
LLDB_INSTRUMENT_VA(this);
return m_opaque_sp.get() != nullptr;
}
size_t SBInstructionList::GetSize() {
LLDB_INSTRUMENT_VA(this);
if (m_opaque_sp)
return m_opaque_sp->GetInstructionList().GetSize();
return 0;
}
SBInstruction SBInstructionList::GetInstructionAtIndex(uint32_t idx) {
LLDB_INSTRUMENT_VA(this, idx);
SBInstruction inst;
if (m_opaque_sp && idx < m_opaque_sp->GetInstructionList().GetSize())
inst.SetOpaque(
m_opaque_sp,
m_opaque_sp->GetInstructionList().GetInstructionAtIndex(idx));
return inst;
}
size_t SBInstructionList::GetInstructionsCount(const SBAddress &start,
const SBAddress &end,
bool canSetBreakpoint) {
LLDB_INSTRUMENT_VA(this, start, end, canSetBreakpoint);
size_t num_instructions = GetSize();
size_t i = 0;
SBAddress addr;
size_t lower_index = 0;
size_t upper_index = 0;
size_t instructions_to_skip = 0;
for (i = 0; i < num_instructions; ++i) {
addr = GetInstructionAtIndex(i).GetAddress();
if (start == addr)
lower_index = i;
if (end == addr)
upper_index = i;
}
if (canSetBreakpoint)
for (i = lower_index; i <= upper_index; ++i) {
SBInstruction insn = GetInstructionAtIndex(i);
if (!insn.CanSetBreakpoint())
++instructions_to_skip;
}
return upper_index - lower_index - instructions_to_skip;
}
void SBInstructionList::Clear() {
LLDB_INSTRUMENT_VA(this);
m_opaque_sp.reset();
}
void SBInstructionList::AppendInstruction(SBInstruction insn) {
LLDB_INSTRUMENT_VA(this, insn);
}
void SBInstructionList::SetDisassembler(const lldb::DisassemblerSP &opaque_sp) {
m_opaque_sp = opaque_sp;
}
void SBInstructionList::Print(FILE *out) {
LLDB_INSTRUMENT_VA(this, out);
if (out == nullptr)
return;
StreamFile stream(out, false);
GetDescription(stream);
}
void SBInstructionList::Print(SBFile out) {
LLDB_INSTRUMENT_VA(this, out);
if (!out.IsValid())
return;
StreamFile stream(out.m_opaque_sp);
GetDescription(stream);
}
void SBInstructionList::Print(FileSP out_sp) {
LLDB_INSTRUMENT_VA(this, out_sp);
if (!out_sp || !out_sp->IsValid())
return;
StreamFile stream(out_sp);
GetDescription(stream);
}
bool SBInstructionList::GetDescription(lldb::SBStream &stream) {
LLDB_INSTRUMENT_VA(this, stream);
return GetDescription(stream.ref());
}
bool SBInstructionList::GetDescription(Stream &sref) {
if (m_opaque_sp) {
size_t num_instructions = GetSize();
if (num_instructions) {
// Call the ref() to make sure a stream is created if one deesn't exist
// already inside description...
const uint32_t max_opcode_byte_size =
m_opaque_sp->GetInstructionList().GetMaxOpcocdeByteSize();
FormatEntity::Entry format;
FormatEntity::Parse("${addr}: ", format);
SymbolContext sc;
SymbolContext prev_sc;
// Expected address of the next instruction. Used to print an empty line
// for non-contiguous blocks of insns.
std::optional<Address> next_addr;
for (size_t i = 0; i < num_instructions; ++i) {
Instruction *inst =
m_opaque_sp->GetInstructionList().GetInstructionAtIndex(i).get();
if (inst == nullptr)
break;
const Address &addr = inst->GetAddress();
prev_sc = sc;
ModuleSP module_sp(addr.GetModule());
if (module_sp) {
module_sp->ResolveSymbolContextForAddress(
addr, eSymbolContextEverything, sc);
}
if (next_addr && *next_addr != addr)
sref.EOL();
inst->Dump(&sref, max_opcode_byte_size, true, false,
/*show_control_flow_kind=*/false, nullptr, &sc, &prev_sc,
&format, 0);
sref.EOL();
next_addr = addr;
next_addr->Slide(inst->GetOpcode().GetByteSize());
}
return true;
}
}
return false;
}
bool SBInstructionList::DumpEmulationForAllInstructions(const char *triple) {
LLDB_INSTRUMENT_VA(this, triple);
if (m_opaque_sp) {
size_t len = GetSize();
for (size_t i = 0; i < len; ++i) {
if (!GetInstructionAtIndex((uint32_t)i).DumpEmulation(triple))
return false;
}
}
return true;
}
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