647 lines
17 KiB
C++
647 lines
17 KiB
C++
//===-- DWARFFormValue.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 <cassert>
|
|
#include <optional>
|
|
|
|
#include "lldb/Core/Module.h"
|
|
#include "lldb/Core/dwarf.h"
|
|
#include "lldb/Symbol/ObjectFile.h"
|
|
#include "lldb/Utility/Stream.h"
|
|
|
|
#include "DWARFDebugInfo.h"
|
|
#include "DWARFFormValue.h"
|
|
#include "DWARFUnit.h"
|
|
|
|
using namespace lldb_private;
|
|
using namespace lldb_private::dwarf;
|
|
using namespace lldb_private::plugin::dwarf;
|
|
|
|
void DWARFFormValue::Clear() {
|
|
m_unit = nullptr;
|
|
m_form = dw_form_t(0);
|
|
m_value = ValueTypeTag();
|
|
}
|
|
|
|
bool DWARFFormValue::ExtractValue(const DWARFDataExtractor &data,
|
|
lldb::offset_t *offset_ptr) {
|
|
if (m_form == DW_FORM_implicit_const)
|
|
return true;
|
|
|
|
bool indirect = false;
|
|
bool is_block = false;
|
|
m_value.data = nullptr;
|
|
uint8_t ref_addr_size;
|
|
// Read the value for the form into value and follow and DW_FORM_indirect
|
|
// instances we run into
|
|
do {
|
|
indirect = false;
|
|
switch (m_form) {
|
|
case DW_FORM_addr:
|
|
assert(m_unit);
|
|
m_value.value.uval =
|
|
data.GetMaxU64(offset_ptr, DWARFUnit::GetAddressByteSize(m_unit));
|
|
break;
|
|
case DW_FORM_block1:
|
|
m_value.value.uval = data.GetU8(offset_ptr);
|
|
is_block = true;
|
|
break;
|
|
case DW_FORM_block2:
|
|
m_value.value.uval = data.GetU16(offset_ptr);
|
|
is_block = true;
|
|
break;
|
|
case DW_FORM_block4:
|
|
m_value.value.uval = data.GetU32(offset_ptr);
|
|
is_block = true;
|
|
break;
|
|
case DW_FORM_data16:
|
|
m_value.value.uval = 16;
|
|
is_block = true;
|
|
break;
|
|
case DW_FORM_exprloc:
|
|
case DW_FORM_block:
|
|
m_value.value.uval = data.GetULEB128(offset_ptr);
|
|
is_block = true;
|
|
break;
|
|
case DW_FORM_string:
|
|
m_value.value.cstr = data.GetCStr(offset_ptr);
|
|
break;
|
|
case DW_FORM_sdata:
|
|
m_value.value.sval = data.GetSLEB128(offset_ptr);
|
|
break;
|
|
case DW_FORM_strp:
|
|
case DW_FORM_line_strp:
|
|
case DW_FORM_sec_offset:
|
|
m_value.value.uval = data.GetMaxU64(offset_ptr, 4);
|
|
break;
|
|
case DW_FORM_addrx1:
|
|
case DW_FORM_strx1:
|
|
case DW_FORM_ref1:
|
|
case DW_FORM_data1:
|
|
case DW_FORM_flag:
|
|
m_value.value.uval = data.GetU8(offset_ptr);
|
|
break;
|
|
case DW_FORM_addrx2:
|
|
case DW_FORM_strx2:
|
|
case DW_FORM_ref2:
|
|
case DW_FORM_data2:
|
|
m_value.value.uval = data.GetU16(offset_ptr);
|
|
break;
|
|
case DW_FORM_addrx3:
|
|
case DW_FORM_strx3:
|
|
m_value.value.uval = data.GetMaxU64(offset_ptr, 3);
|
|
break;
|
|
case DW_FORM_addrx4:
|
|
case DW_FORM_strx4:
|
|
case DW_FORM_ref4:
|
|
case DW_FORM_data4:
|
|
m_value.value.uval = data.GetU32(offset_ptr);
|
|
break;
|
|
case DW_FORM_data8:
|
|
case DW_FORM_ref8:
|
|
case DW_FORM_ref_sig8:
|
|
m_value.value.uval = data.GetU64(offset_ptr);
|
|
break;
|
|
case DW_FORM_addrx:
|
|
case DW_FORM_loclistx:
|
|
case DW_FORM_rnglistx:
|
|
case DW_FORM_strx:
|
|
case DW_FORM_udata:
|
|
case DW_FORM_ref_udata:
|
|
case DW_FORM_GNU_str_index:
|
|
case DW_FORM_GNU_addr_index:
|
|
m_value.value.uval = data.GetULEB128(offset_ptr);
|
|
break;
|
|
case DW_FORM_ref_addr:
|
|
assert(m_unit);
|
|
if (m_unit->GetVersion() <= 2)
|
|
ref_addr_size = m_unit->GetAddressByteSize();
|
|
else
|
|
ref_addr_size = 4;
|
|
m_value.value.uval = data.GetMaxU64(offset_ptr, ref_addr_size);
|
|
break;
|
|
case DW_FORM_indirect:
|
|
m_form = static_cast<dw_form_t>(data.GetULEB128(offset_ptr));
|
|
indirect = true;
|
|
break;
|
|
case DW_FORM_flag_present:
|
|
m_value.value.uval = 1;
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
} while (indirect);
|
|
|
|
if (is_block) {
|
|
m_value.data = data.PeekData(*offset_ptr, m_value.value.uval);
|
|
if (m_value.data != nullptr) {
|
|
*offset_ptr += m_value.value.uval;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
struct FormSize {
|
|
uint8_t valid:1, size:7;
|
|
};
|
|
static FormSize g_form_sizes[] = {
|
|
{0, 0}, // 0x00 unused
|
|
{0, 0}, // 0x01 DW_FORM_addr
|
|
{0, 0}, // 0x02 unused
|
|
{0, 0}, // 0x03 DW_FORM_block2
|
|
{0, 0}, // 0x04 DW_FORM_block4
|
|
{1, 2}, // 0x05 DW_FORM_data2
|
|
{1, 4}, // 0x06 DW_FORM_data4
|
|
{1, 8}, // 0x07 DW_FORM_data8
|
|
{0, 0}, // 0x08 DW_FORM_string
|
|
{0, 0}, // 0x09 DW_FORM_block
|
|
{0, 0}, // 0x0a DW_FORM_block1
|
|
{1, 1}, // 0x0b DW_FORM_data1
|
|
{1, 1}, // 0x0c DW_FORM_flag
|
|
{0, 0}, // 0x0d DW_FORM_sdata
|
|
{1, 4}, // 0x0e DW_FORM_strp
|
|
{0, 0}, // 0x0f DW_FORM_udata
|
|
{0, 0}, // 0x10 DW_FORM_ref_addr (addr size for DWARF2 and earlier, 4 bytes
|
|
// for DWARF32, 8 bytes for DWARF32 in DWARF 3 and later
|
|
{1, 1}, // 0x11 DW_FORM_ref1
|
|
{1, 2}, // 0x12 DW_FORM_ref2
|
|
{1, 4}, // 0x13 DW_FORM_ref4
|
|
{1, 8}, // 0x14 DW_FORM_ref8
|
|
{0, 0}, // 0x15 DW_FORM_ref_udata
|
|
{0, 0}, // 0x16 DW_FORM_indirect
|
|
{1, 4}, // 0x17 DW_FORM_sec_offset
|
|
{0, 0}, // 0x18 DW_FORM_exprloc
|
|
{1, 0}, // 0x19 DW_FORM_flag_present
|
|
{0, 0}, // 0x1a DW_FORM_strx (ULEB128)
|
|
{0, 0}, // 0x1b DW_FORM_addrx (ULEB128)
|
|
{1, 4}, // 0x1c DW_FORM_ref_sup4
|
|
{0, 0}, // 0x1d DW_FORM_strp_sup (4 bytes for DWARF32, 8 bytes for DWARF64)
|
|
{1, 16}, // 0x1e DW_FORM_data16
|
|
{1, 4}, // 0x1f DW_FORM_line_strp
|
|
{1, 8}, // 0x20 DW_FORM_ref_sig8
|
|
};
|
|
|
|
std::optional<uint8_t> DWARFFormValue::GetFixedSize(dw_form_t form,
|
|
const DWARFUnit *u) {
|
|
if (form <= DW_FORM_ref_sig8 && g_form_sizes[form].valid)
|
|
return static_cast<uint8_t>(g_form_sizes[form].size);
|
|
if (form == DW_FORM_addr && u)
|
|
return u->GetAddressByteSize();
|
|
return std::nullopt;
|
|
}
|
|
|
|
std::optional<uint8_t> DWARFFormValue::GetFixedSize() const {
|
|
return GetFixedSize(m_form, m_unit);
|
|
}
|
|
|
|
bool DWARFFormValue::SkipValue(const DWARFDataExtractor &debug_info_data,
|
|
lldb::offset_t *offset_ptr) const {
|
|
return DWARFFormValue::SkipValue(m_form, debug_info_data, offset_ptr, m_unit);
|
|
}
|
|
|
|
bool DWARFFormValue::SkipValue(dw_form_t form,
|
|
const DWARFDataExtractor &debug_info_data,
|
|
lldb::offset_t *offset_ptr,
|
|
const DWARFUnit *unit) {
|
|
uint8_t ref_addr_size;
|
|
switch (form) {
|
|
// Blocks if inlined data that have a length field and the data bytes inlined
|
|
// in the .debug_info
|
|
case DW_FORM_exprloc:
|
|
case DW_FORM_block: {
|
|
uint64_t size = debug_info_data.GetULEB128(offset_ptr);
|
|
*offset_ptr += size;
|
|
}
|
|
return true;
|
|
case DW_FORM_block1: {
|
|
uint8_t size = debug_info_data.GetU8(offset_ptr);
|
|
*offset_ptr += size;
|
|
}
|
|
return true;
|
|
case DW_FORM_block2: {
|
|
uint16_t size = debug_info_data.GetU16(offset_ptr);
|
|
*offset_ptr += size;
|
|
}
|
|
return true;
|
|
case DW_FORM_block4: {
|
|
uint32_t size = debug_info_data.GetU32(offset_ptr);
|
|
*offset_ptr += size;
|
|
}
|
|
return true;
|
|
|
|
// Inlined NULL terminated C-strings
|
|
case DW_FORM_string:
|
|
debug_info_data.GetCStr(offset_ptr);
|
|
return true;
|
|
|
|
// Compile unit address sized values
|
|
case DW_FORM_addr:
|
|
*offset_ptr += DWARFUnit::GetAddressByteSize(unit);
|
|
return true;
|
|
|
|
case DW_FORM_ref_addr:
|
|
ref_addr_size = 4;
|
|
assert(unit); // Unit must be valid for DW_FORM_ref_addr objects or we will
|
|
// get this wrong
|
|
if (unit->GetVersion() <= 2)
|
|
ref_addr_size = unit->GetAddressByteSize();
|
|
else
|
|
ref_addr_size = 4;
|
|
*offset_ptr += ref_addr_size;
|
|
return true;
|
|
|
|
// 0 bytes values (implied from DW_FORM)
|
|
case DW_FORM_flag_present:
|
|
case DW_FORM_implicit_const:
|
|
return true;
|
|
|
|
// 1 byte values
|
|
case DW_FORM_addrx1:
|
|
case DW_FORM_data1:
|
|
case DW_FORM_flag:
|
|
case DW_FORM_ref1:
|
|
case DW_FORM_strx1:
|
|
*offset_ptr += 1;
|
|
return true;
|
|
|
|
// 2 byte values
|
|
case DW_FORM_addrx2:
|
|
case DW_FORM_data2:
|
|
case DW_FORM_ref2:
|
|
case DW_FORM_strx2:
|
|
*offset_ptr += 2;
|
|
return true;
|
|
|
|
// 3 byte values
|
|
case DW_FORM_addrx3:
|
|
case DW_FORM_strx3:
|
|
*offset_ptr += 3;
|
|
return true;
|
|
|
|
// 32 bit for DWARF 32, 64 for DWARF 64
|
|
case DW_FORM_sec_offset:
|
|
case DW_FORM_strp:
|
|
case DW_FORM_line_strp:
|
|
*offset_ptr += 4;
|
|
return true;
|
|
|
|
// 4 byte values
|
|
case DW_FORM_addrx4:
|
|
case DW_FORM_data4:
|
|
case DW_FORM_ref4:
|
|
case DW_FORM_strx4:
|
|
*offset_ptr += 4;
|
|
return true;
|
|
|
|
// 8 byte values
|
|
case DW_FORM_data8:
|
|
case DW_FORM_ref8:
|
|
case DW_FORM_ref_sig8:
|
|
*offset_ptr += 8;
|
|
return true;
|
|
|
|
// signed or unsigned LEB 128 values
|
|
case DW_FORM_addrx:
|
|
case DW_FORM_loclistx:
|
|
case DW_FORM_rnglistx:
|
|
case DW_FORM_sdata:
|
|
case DW_FORM_udata:
|
|
case DW_FORM_ref_udata:
|
|
case DW_FORM_GNU_addr_index:
|
|
case DW_FORM_GNU_str_index:
|
|
case DW_FORM_strx:
|
|
debug_info_data.Skip_LEB128(offset_ptr);
|
|
return true;
|
|
|
|
case DW_FORM_indirect: {
|
|
auto indirect_form =
|
|
static_cast<dw_form_t>(debug_info_data.GetULEB128(offset_ptr));
|
|
return DWARFFormValue::SkipValue(indirect_form, debug_info_data,
|
|
offset_ptr, unit);
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void DWARFFormValue::Dump(Stream &s) const {
|
|
uint64_t uvalue = Unsigned();
|
|
bool unit_relative_offset = false;
|
|
|
|
switch (m_form) {
|
|
case DW_FORM_addr:
|
|
DumpAddress(s.AsRawOstream(), uvalue, sizeof(uint64_t));
|
|
break;
|
|
case DW_FORM_flag:
|
|
case DW_FORM_data1:
|
|
s.PutHex8(uvalue);
|
|
break;
|
|
case DW_FORM_data2:
|
|
s.PutHex16(uvalue);
|
|
break;
|
|
case DW_FORM_sec_offset:
|
|
case DW_FORM_data4:
|
|
s.PutHex32(uvalue);
|
|
break;
|
|
case DW_FORM_ref_sig8:
|
|
case DW_FORM_data8:
|
|
s.PutHex64(uvalue);
|
|
break;
|
|
case DW_FORM_string:
|
|
s.QuotedCString(AsCString());
|
|
break;
|
|
case DW_FORM_exprloc:
|
|
case DW_FORM_block:
|
|
case DW_FORM_block1:
|
|
case DW_FORM_block2:
|
|
case DW_FORM_block4:
|
|
if (uvalue > 0) {
|
|
switch (m_form) {
|
|
case DW_FORM_exprloc:
|
|
case DW_FORM_block:
|
|
s.Printf("<0x%" PRIx64 "> ", uvalue);
|
|
break;
|
|
case DW_FORM_block1:
|
|
s.Printf("<0x%2.2x> ", (uint8_t)uvalue);
|
|
break;
|
|
case DW_FORM_block2:
|
|
s.Printf("<0x%4.4x> ", (uint16_t)uvalue);
|
|
break;
|
|
case DW_FORM_block4:
|
|
s.Printf("<0x%8.8x> ", (uint32_t)uvalue);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
const uint8_t *data_ptr = m_value.data;
|
|
if (data_ptr) {
|
|
const uint8_t *end_data_ptr =
|
|
data_ptr + uvalue; // uvalue contains size of block
|
|
while (data_ptr < end_data_ptr) {
|
|
s.Printf("%2.2x ", *data_ptr);
|
|
++data_ptr;
|
|
}
|
|
} else
|
|
s.PutCString("NULL");
|
|
}
|
|
break;
|
|
|
|
case DW_FORM_sdata:
|
|
s.PutSLEB128(uvalue);
|
|
break;
|
|
case DW_FORM_udata:
|
|
s.PutULEB128(uvalue);
|
|
break;
|
|
case DW_FORM_strp:
|
|
case DW_FORM_line_strp: {
|
|
const char *dbg_str = AsCString();
|
|
if (dbg_str) {
|
|
s.QuotedCString(dbg_str);
|
|
} else {
|
|
s.PutHex32(uvalue);
|
|
}
|
|
} break;
|
|
|
|
case DW_FORM_ref_addr: {
|
|
assert(m_unit); // Unit must be valid for DW_FORM_ref_addr objects or we
|
|
// will get this wrong
|
|
if (m_unit->GetVersion() <= 2)
|
|
DumpAddress(s.AsRawOstream(), uvalue, sizeof(uint64_t) * 2);
|
|
else
|
|
DumpAddress(s.AsRawOstream(), uvalue,
|
|
4 * 2); // 4 for DWARF32, 8 for DWARF64, but we don't
|
|
// support DWARF64 yet
|
|
break;
|
|
}
|
|
case DW_FORM_ref1:
|
|
unit_relative_offset = true;
|
|
break;
|
|
case DW_FORM_ref2:
|
|
unit_relative_offset = true;
|
|
break;
|
|
case DW_FORM_ref4:
|
|
unit_relative_offset = true;
|
|
break;
|
|
case DW_FORM_ref8:
|
|
unit_relative_offset = true;
|
|
break;
|
|
case DW_FORM_ref_udata:
|
|
unit_relative_offset = true;
|
|
break;
|
|
|
|
// All DW_FORM_indirect attributes should be resolved prior to calling this
|
|
// function
|
|
case DW_FORM_indirect:
|
|
s.PutCString("DW_FORM_indirect");
|
|
break;
|
|
case DW_FORM_flag_present:
|
|
break;
|
|
default:
|
|
s.Printf("DW_FORM(0x%4.4x)", m_form);
|
|
break;
|
|
}
|
|
|
|
if (unit_relative_offset) {
|
|
assert(m_unit); // Unit must be valid for DW_FORM_ref forms that are compile
|
|
// unit relative or we will get this wrong
|
|
s.Printf("{0x%8.8" PRIx64 "}", uvalue + m_unit->GetOffset());
|
|
}
|
|
}
|
|
|
|
const char *DWARFFormValue::AsCString() const {
|
|
DWARFContext &context = m_unit->GetSymbolFileDWARF().GetDWARFContext();
|
|
|
|
if (m_form == DW_FORM_string)
|
|
return m_value.value.cstr;
|
|
if (m_form == DW_FORM_strp)
|
|
return context.getOrLoadStrData().PeekCStr(m_value.value.uval);
|
|
|
|
if (m_form == DW_FORM_GNU_str_index || m_form == DW_FORM_strx ||
|
|
m_form == DW_FORM_strx1 || m_form == DW_FORM_strx2 ||
|
|
m_form == DW_FORM_strx3 || m_form == DW_FORM_strx4) {
|
|
|
|
std::optional<uint64_t> offset =
|
|
m_unit->GetStringOffsetSectionItem(m_value.value.uval);
|
|
if (!offset)
|
|
return nullptr;
|
|
return context.getOrLoadStrData().PeekCStr(*offset);
|
|
}
|
|
|
|
if (m_form == DW_FORM_line_strp)
|
|
return context.getOrLoadLineStrData().PeekCStr(m_value.value.uval);
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
dw_addr_t DWARFFormValue::Address() const {
|
|
SymbolFileDWARF &symbol_file = m_unit->GetSymbolFileDWARF();
|
|
|
|
if (m_form == DW_FORM_addr)
|
|
return Unsigned();
|
|
|
|
assert(m_unit);
|
|
assert(m_form == DW_FORM_GNU_addr_index || m_form == DW_FORM_addrx ||
|
|
m_form == DW_FORM_addrx1 || m_form == DW_FORM_addrx2 ||
|
|
m_form == DW_FORM_addrx3 || m_form == DW_FORM_addrx4);
|
|
|
|
uint32_t index_size = m_unit->GetAddressByteSize();
|
|
dw_offset_t addr_base = m_unit->GetAddrBase();
|
|
lldb::offset_t offset = addr_base + m_value.value.uval * index_size;
|
|
return symbol_file.GetDWARFContext().getOrLoadAddrData().GetMaxU64(
|
|
&offset, index_size);
|
|
}
|
|
|
|
std::pair<DWARFUnit *, uint64_t>
|
|
DWARFFormValue::ReferencedUnitAndOffset() const {
|
|
uint64_t value = m_value.value.uval;
|
|
switch (m_form) {
|
|
case DW_FORM_ref1:
|
|
case DW_FORM_ref2:
|
|
case DW_FORM_ref4:
|
|
case DW_FORM_ref8:
|
|
case DW_FORM_ref_udata:
|
|
assert(m_unit); // Unit must be valid for DW_FORM_ref forms that are compile
|
|
// unit relative or we will get this wrong
|
|
value += m_unit->GetOffset();
|
|
if (!m_unit->ContainsDIEOffset(value)) {
|
|
m_unit->GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
|
|
"DW_FORM_ref* DIE reference {0:x16} is outside of its CU", value);
|
|
return {nullptr, 0};
|
|
}
|
|
return {const_cast<DWARFUnit *>(m_unit), value};
|
|
|
|
case DW_FORM_ref_addr: {
|
|
DWARFUnit *ref_cu =
|
|
m_unit->GetSymbolFileDWARF().DebugInfo().GetUnitContainingDIEOffset(
|
|
DIERef::Section::DebugInfo, value);
|
|
if (!ref_cu) {
|
|
m_unit->GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
|
|
"DW_FORM_ref_addr DIE reference {0:x16} has no matching CU", value);
|
|
return {nullptr, 0};
|
|
}
|
|
return {ref_cu, value};
|
|
}
|
|
|
|
case DW_FORM_ref_sig8: {
|
|
DWARFTypeUnit *tu =
|
|
m_unit->GetSymbolFileDWARF().DebugInfo().GetTypeUnitForHash(value);
|
|
if (!tu)
|
|
return {nullptr, 0};
|
|
return {tu, tu->GetTypeOffset()};
|
|
}
|
|
|
|
default:
|
|
return {nullptr, 0};
|
|
}
|
|
}
|
|
|
|
DWARFDIE DWARFFormValue::Reference() const {
|
|
auto [unit, offset] = ReferencedUnitAndOffset();
|
|
return unit ? unit->GetDIE(offset) : DWARFDIE();
|
|
}
|
|
|
|
uint64_t DWARFFormValue::Reference(dw_offset_t base_offset) const {
|
|
uint64_t value = m_value.value.uval;
|
|
switch (m_form) {
|
|
case DW_FORM_ref1:
|
|
case DW_FORM_ref2:
|
|
case DW_FORM_ref4:
|
|
case DW_FORM_ref8:
|
|
case DW_FORM_ref_udata:
|
|
return value + base_offset;
|
|
|
|
case DW_FORM_ref_addr:
|
|
case DW_FORM_ref_sig8:
|
|
case DW_FORM_GNU_ref_alt:
|
|
return value;
|
|
|
|
default:
|
|
return DW_INVALID_OFFSET;
|
|
}
|
|
}
|
|
|
|
const uint8_t *DWARFFormValue::BlockData() const { return m_value.data; }
|
|
|
|
bool DWARFFormValue::IsBlockForm(const dw_form_t form) {
|
|
switch (form) {
|
|
case DW_FORM_exprloc:
|
|
case DW_FORM_block:
|
|
case DW_FORM_block1:
|
|
case DW_FORM_block2:
|
|
case DW_FORM_block4:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
llvm_unreachable("All cases handled above!");
|
|
}
|
|
|
|
bool DWARFFormValue::IsDataForm(const dw_form_t form) {
|
|
switch (form) {
|
|
case DW_FORM_sdata:
|
|
case DW_FORM_udata:
|
|
case DW_FORM_data1:
|
|
case DW_FORM_data2:
|
|
case DW_FORM_data4:
|
|
case DW_FORM_data8:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
llvm_unreachable("All cases handled above!");
|
|
}
|
|
|
|
bool DWARFFormValue::FormIsSupported(dw_form_t form) {
|
|
switch (form) {
|
|
case DW_FORM_addr:
|
|
case DW_FORM_addrx:
|
|
case DW_FORM_loclistx:
|
|
case DW_FORM_rnglistx:
|
|
case DW_FORM_block2:
|
|
case DW_FORM_block4:
|
|
case DW_FORM_data2:
|
|
case DW_FORM_data4:
|
|
case DW_FORM_data8:
|
|
case DW_FORM_string:
|
|
case DW_FORM_block:
|
|
case DW_FORM_block1:
|
|
case DW_FORM_data1:
|
|
case DW_FORM_flag:
|
|
case DW_FORM_sdata:
|
|
case DW_FORM_strp:
|
|
case DW_FORM_line_strp:
|
|
case DW_FORM_strx:
|
|
case DW_FORM_strx1:
|
|
case DW_FORM_strx2:
|
|
case DW_FORM_strx3:
|
|
case DW_FORM_strx4:
|
|
case DW_FORM_udata:
|
|
case DW_FORM_ref_addr:
|
|
case DW_FORM_ref1:
|
|
case DW_FORM_ref2:
|
|
case DW_FORM_ref4:
|
|
case DW_FORM_ref8:
|
|
case DW_FORM_ref_udata:
|
|
case DW_FORM_indirect:
|
|
case DW_FORM_sec_offset:
|
|
case DW_FORM_exprloc:
|
|
case DW_FORM_flag_present:
|
|
case DW_FORM_ref_sig8:
|
|
case DW_FORM_GNU_str_index:
|
|
case DW_FORM_GNU_addr_index:
|
|
case DW_FORM_implicit_const:
|
|
return true;
|
|
default:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|