746 lines
19 KiB
C++
746 lines
19 KiB
C++
//===-- DWARFFormValue.cpp --------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include <assert.h>
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#include "lldb/Core/Stream.h"
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#include "lldb/Core/dwarf.h"
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#include "DWARFCompileUnit.h"
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#include "DWARFFormValue.h"
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class DWARFCompileUnit;
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using namespace lldb_private;
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static uint8_t g_form_sizes_addr4[] = {
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0, // 0x00 unused
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4, // 0x01 DW_FORM_addr
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0, // 0x02 unused
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0, // 0x03 DW_FORM_block2
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0, // 0x04 DW_FORM_block4
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2, // 0x05 DW_FORM_data2
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4, // 0x06 DW_FORM_data4
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8, // 0x07 DW_FORM_data8
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0, // 0x08 DW_FORM_string
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0, // 0x09 DW_FORM_block
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0, // 0x0a DW_FORM_block1
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1, // 0x0b DW_FORM_data1
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1, // 0x0c DW_FORM_flag
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0, // 0x0d DW_FORM_sdata
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4, // 0x0e DW_FORM_strp
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0, // 0x0f DW_FORM_udata
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0, // 0x10 DW_FORM_ref_addr (addr size for DWARF2 and earlier, 4 bytes for
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// DWARF32, 8 bytes for DWARF32 in DWARF 3 and later
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1, // 0x11 DW_FORM_ref1
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2, // 0x12 DW_FORM_ref2
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4, // 0x13 DW_FORM_ref4
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8, // 0x14 DW_FORM_ref8
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0, // 0x15 DW_FORM_ref_udata
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0, // 0x16 DW_FORM_indirect
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4, // 0x17 DW_FORM_sec_offset
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0, // 0x18 DW_FORM_exprloc
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0, // 0x19 DW_FORM_flag_present
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0, // 0x1a
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0, // 0x1b
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0, // 0x1c
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0, // 0x1d
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0, // 0x1e
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0, // 0x1f
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8, // 0x20 DW_FORM_ref_sig8
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};
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static uint8_t g_form_sizes_addr8[] = {
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0, // 0x00 unused
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8, // 0x01 DW_FORM_addr
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0, // 0x02 unused
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0, // 0x03 DW_FORM_block2
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0, // 0x04 DW_FORM_block4
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2, // 0x05 DW_FORM_data2
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4, // 0x06 DW_FORM_data4
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8, // 0x07 DW_FORM_data8
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0, // 0x08 DW_FORM_string
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0, // 0x09 DW_FORM_block
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0, // 0x0a DW_FORM_block1
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1, // 0x0b DW_FORM_data1
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1, // 0x0c DW_FORM_flag
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0, // 0x0d DW_FORM_sdata
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4, // 0x0e DW_FORM_strp
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0, // 0x0f DW_FORM_udata
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0, // 0x10 DW_FORM_ref_addr (addr size for DWARF2 and earlier, 4 bytes for
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// DWARF32, 8 bytes for DWARF32 in DWARF 3 and later
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1, // 0x11 DW_FORM_ref1
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2, // 0x12 DW_FORM_ref2
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4, // 0x13 DW_FORM_ref4
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8, // 0x14 DW_FORM_ref8
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0, // 0x15 DW_FORM_ref_udata
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0, // 0x16 DW_FORM_indirect
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4, // 0x17 DW_FORM_sec_offset
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0, // 0x18 DW_FORM_exprloc
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0, // 0x19 DW_FORM_flag_present
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0, // 0x1a
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0, // 0x1b
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0, // 0x1c
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0, // 0x1d
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0, // 0x1e
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0, // 0x1f
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8, // 0x20 DW_FORM_ref_sig8
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};
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// Difference with g_form_sizes_addr8:
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// DW_FORM_strp and DW_FORM_sec_offset are 8 instead of 4
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static uint8_t g_form_sizes_addr8_dwarf64[] = {
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0, // 0x00 unused
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8, // 0x01 DW_FORM_addr
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0, // 0x02 unused
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0, // 0x03 DW_FORM_block2
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0, // 0x04 DW_FORM_block4
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2, // 0x05 DW_FORM_data2
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4, // 0x06 DW_FORM_data4
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8, // 0x07 DW_FORM_data8
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0, // 0x08 DW_FORM_string
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0, // 0x09 DW_FORM_block
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0, // 0x0a DW_FORM_block1
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1, // 0x0b DW_FORM_data1
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1, // 0x0c DW_FORM_flag
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0, // 0x0d DW_FORM_sdata
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8, // 0x0e DW_FORM_strp
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0, // 0x0f DW_FORM_udata
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0, // 0x10 DW_FORM_ref_addr (addr size for DWARF2 and earlier, 4 bytes for
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// DWARF32, 8 bytes for DWARF32 in DWARF 3 and later
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1, // 0x11 DW_FORM_ref1
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2, // 0x12 DW_FORM_ref2
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4, // 0x13 DW_FORM_ref4
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8, // 0x14 DW_FORM_ref8
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0, // 0x15 DW_FORM_ref_udata
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0, // 0x16 DW_FORM_indirect
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8, // 0x17 DW_FORM_sec_offset
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0, // 0x18 DW_FORM_exprloc
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0, // 0x19 DW_FORM_flag_present
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0, // 0x1a
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0, // 0x1b
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0, // 0x1c
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0, // 0x1d
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0, // 0x1e
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0, // 0x1f
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8, // 0x20 DW_FORM_ref_sig8
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};
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DWARFFormValue::FixedFormSizes
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DWARFFormValue::GetFixedFormSizesForAddressSize(uint8_t addr_size,
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bool is_dwarf64) {
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if (!is_dwarf64) {
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switch (addr_size) {
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case 4:
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return FixedFormSizes(g_form_sizes_addr4, sizeof(g_form_sizes_addr4));
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case 8:
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return FixedFormSizes(g_form_sizes_addr8, sizeof(g_form_sizes_addr8));
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}
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} else {
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if (addr_size == 8)
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return FixedFormSizes(g_form_sizes_addr8_dwarf64,
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sizeof(g_form_sizes_addr8_dwarf64));
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// is_dwarf64 && addr_size == 4 : no provider does this.
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}
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return FixedFormSizes();
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}
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DWARFFormValue::DWARFFormValue() : m_cu(NULL), m_form(0), m_value() {}
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DWARFFormValue::DWARFFormValue(const DWARFCompileUnit *cu, dw_form_t form)
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: m_cu(cu), m_form(form), m_value() {}
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void DWARFFormValue::Clear() {
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m_cu = nullptr;
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m_form = 0;
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memset(&m_value, 0, sizeof(m_value));
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}
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bool DWARFFormValue::ExtractValue(const DWARFDataExtractor &data,
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lldb::offset_t *offset_ptr) {
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bool indirect = false;
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bool is_block = false;
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m_value.data = NULL;
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uint8_t ref_addr_size;
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// Read the value for the form into value and follow and DW_FORM_indirect
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// instances we run into
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do {
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indirect = false;
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switch (m_form) {
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case DW_FORM_addr:
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assert(m_cu);
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m_value.value.uval = data.GetMaxU64(
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offset_ptr, DWARFCompileUnit::GetAddressByteSize(m_cu));
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break;
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case DW_FORM_block2:
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m_value.value.uval = data.GetU16(offset_ptr);
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is_block = true;
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break;
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case DW_FORM_block4:
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m_value.value.uval = data.GetU32(offset_ptr);
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is_block = true;
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break;
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case DW_FORM_data2:
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m_value.value.uval = data.GetU16(offset_ptr);
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break;
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case DW_FORM_data4:
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m_value.value.uval = data.GetU32(offset_ptr);
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break;
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case DW_FORM_data8:
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m_value.value.uval = data.GetU64(offset_ptr);
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break;
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case DW_FORM_string:
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m_value.value.cstr = data.GetCStr(offset_ptr);
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break;
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case DW_FORM_exprloc:
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case DW_FORM_block:
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m_value.value.uval = data.GetULEB128(offset_ptr);
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is_block = true;
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break;
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case DW_FORM_block1:
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m_value.value.uval = data.GetU8(offset_ptr);
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is_block = true;
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break;
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case DW_FORM_data1:
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m_value.value.uval = data.GetU8(offset_ptr);
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break;
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case DW_FORM_flag:
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m_value.value.uval = data.GetU8(offset_ptr);
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break;
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case DW_FORM_sdata:
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m_value.value.sval = data.GetSLEB128(offset_ptr);
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break;
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case DW_FORM_strp:
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assert(m_cu);
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m_value.value.uval =
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data.GetMaxU64(offset_ptr, DWARFCompileUnit::IsDWARF64(m_cu) ? 8 : 4);
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break;
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// case DW_FORM_APPLE_db_str:
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case DW_FORM_udata:
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m_value.value.uval = data.GetULEB128(offset_ptr);
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break;
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case DW_FORM_ref_addr:
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assert(m_cu);
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ref_addr_size = 4;
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if (m_cu->GetVersion() <= 2)
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ref_addr_size = m_cu->GetAddressByteSize();
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else
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ref_addr_size = m_cu->IsDWARF64() ? 8 : 4;
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m_value.value.uval = data.GetMaxU64(offset_ptr, ref_addr_size);
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break;
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case DW_FORM_ref1:
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m_value.value.uval = data.GetU8(offset_ptr);
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break;
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case DW_FORM_ref2:
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m_value.value.uval = data.GetU16(offset_ptr);
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break;
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case DW_FORM_ref4:
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m_value.value.uval = data.GetU32(offset_ptr);
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break;
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case DW_FORM_ref8:
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m_value.value.uval = data.GetU64(offset_ptr);
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break;
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case DW_FORM_ref_udata:
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m_value.value.uval = data.GetULEB128(offset_ptr);
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break;
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case DW_FORM_indirect:
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m_form = data.GetULEB128(offset_ptr);
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indirect = true;
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break;
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case DW_FORM_sec_offset:
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assert(m_cu);
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m_value.value.uval =
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data.GetMaxU64(offset_ptr, DWARFCompileUnit::IsDWARF64(m_cu) ? 8 : 4);
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break;
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case DW_FORM_flag_present:
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m_value.value.uval = 1;
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break;
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case DW_FORM_ref_sig8:
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m_value.value.uval = data.GetU64(offset_ptr);
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break;
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case DW_FORM_GNU_str_index:
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m_value.value.uval = data.GetULEB128(offset_ptr);
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break;
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case DW_FORM_GNU_addr_index:
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m_value.value.uval = data.GetULEB128(offset_ptr);
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break;
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default:
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return false;
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break;
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}
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} while (indirect);
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if (is_block) {
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m_value.data = data.PeekData(*offset_ptr, m_value.value.uval);
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if (m_value.data != NULL) {
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*offset_ptr += m_value.value.uval;
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}
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}
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return true;
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}
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bool DWARFFormValue::SkipValue(const DWARFDataExtractor &debug_info_data,
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lldb::offset_t *offset_ptr) const {
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return DWARFFormValue::SkipValue(m_form, debug_info_data, offset_ptr, m_cu);
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}
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bool DWARFFormValue::SkipValue(dw_form_t form,
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const DWARFDataExtractor &debug_info_data,
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lldb::offset_t *offset_ptr,
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const DWARFCompileUnit *cu) {
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uint8_t ref_addr_size;
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switch (form) {
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// Blocks if inlined data that have a length field and the data bytes
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// inlined in the .debug_info
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case DW_FORM_exprloc:
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case DW_FORM_block: {
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dw_uleb128_t size = debug_info_data.GetULEB128(offset_ptr);
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*offset_ptr += size;
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}
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return true;
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case DW_FORM_block1: {
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dw_uleb128_t size = debug_info_data.GetU8(offset_ptr);
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*offset_ptr += size;
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}
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return true;
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case DW_FORM_block2: {
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dw_uleb128_t size = debug_info_data.GetU16(offset_ptr);
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*offset_ptr += size;
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}
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return true;
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case DW_FORM_block4: {
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dw_uleb128_t size = debug_info_data.GetU32(offset_ptr);
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*offset_ptr += size;
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}
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return true;
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// Inlined NULL terminated C-strings
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case DW_FORM_string:
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debug_info_data.GetCStr(offset_ptr);
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return true;
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// Compile unit address sized values
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case DW_FORM_addr:
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*offset_ptr += DWARFCompileUnit::GetAddressByteSize(cu);
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return true;
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case DW_FORM_ref_addr:
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ref_addr_size = 4;
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assert(cu); // CU must be valid for DW_FORM_ref_addr objects or we will get
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// this wrong
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if (cu->GetVersion() <= 2)
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ref_addr_size = cu->GetAddressByteSize();
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else
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ref_addr_size = cu->IsDWARF64() ? 8 : 4;
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*offset_ptr += ref_addr_size;
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return true;
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// 0 bytes values (implied from DW_FORM)
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case DW_FORM_flag_present:
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return true;
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// 1 byte values
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case DW_FORM_data1:
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case DW_FORM_flag:
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case DW_FORM_ref1:
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*offset_ptr += 1;
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return true;
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// 2 byte values
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case DW_FORM_data2:
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case DW_FORM_ref2:
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*offset_ptr += 2;
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return true;
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// 32 bit for DWARF 32, 64 for DWARF 64
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case DW_FORM_sec_offset:
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case DW_FORM_strp:
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assert(cu);
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*offset_ptr += (cu->IsDWARF64() ? 8 : 4);
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return true;
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// 4 byte values
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case DW_FORM_data4:
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case DW_FORM_ref4:
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*offset_ptr += 4;
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return true;
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// 8 byte values
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case DW_FORM_data8:
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case DW_FORM_ref8:
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case DW_FORM_ref_sig8:
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*offset_ptr += 8;
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return true;
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// signed or unsigned LEB 128 values
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case DW_FORM_sdata:
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case DW_FORM_udata:
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case DW_FORM_ref_udata:
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case DW_FORM_GNU_addr_index:
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case DW_FORM_GNU_str_index:
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debug_info_data.Skip_LEB128(offset_ptr);
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return true;
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case DW_FORM_indirect: {
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dw_form_t indirect_form = debug_info_data.GetULEB128(offset_ptr);
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return DWARFFormValue::SkipValue(indirect_form, debug_info_data, offset_ptr,
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cu);
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}
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default:
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break;
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}
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return false;
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}
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void DWARFFormValue::Dump(Stream &s) const {
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uint64_t uvalue = Unsigned();
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bool cu_relative_offset = false;
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bool verbose = s.GetVerbose();
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switch (m_form) {
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case DW_FORM_addr:
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s.Address(uvalue, sizeof(uint64_t));
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break;
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case DW_FORM_flag:
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case DW_FORM_data1:
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s.PutHex8(uvalue);
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break;
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case DW_FORM_data2:
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s.PutHex16(uvalue);
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break;
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case DW_FORM_sec_offset:
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case DW_FORM_data4:
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s.PutHex32(uvalue);
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break;
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case DW_FORM_ref_sig8:
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case DW_FORM_data8:
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s.PutHex64(uvalue);
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break;
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case DW_FORM_string:
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s.QuotedCString(AsCString());
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break;
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case DW_FORM_exprloc:
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case DW_FORM_block:
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case DW_FORM_block1:
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case DW_FORM_block2:
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case DW_FORM_block4:
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if (uvalue > 0) {
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switch (m_form) {
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case DW_FORM_exprloc:
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case DW_FORM_block:
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s.Printf("<0x%" PRIx64 "> ", uvalue);
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break;
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case DW_FORM_block1:
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s.Printf("<0x%2.2x> ", (uint8_t)uvalue);
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break;
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case DW_FORM_block2:
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s.Printf("<0x%4.4x> ", (uint16_t)uvalue);
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break;
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case DW_FORM_block4:
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s.Printf("<0x%8.8x> ", (uint32_t)uvalue);
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break;
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default:
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break;
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}
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const uint8_t *data_ptr = m_value.data;
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if (data_ptr) {
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const uint8_t *end_data_ptr =
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data_ptr + uvalue; // uvalue contains size of block
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while (data_ptr < end_data_ptr) {
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s.Printf("%2.2x ", *data_ptr);
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++data_ptr;
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}
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} else
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s.PutCString("NULL");
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}
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break;
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case DW_FORM_sdata:
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s.PutSLEB128(uvalue);
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break;
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case DW_FORM_udata:
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s.PutULEB128(uvalue);
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break;
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case DW_FORM_strp: {
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const char *dbg_str = AsCString();
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if (dbg_str) {
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if (verbose)
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s.Printf(" .debug_str[0x%8.8x] = ", (uint32_t)uvalue);
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s.QuotedCString(dbg_str);
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} else {
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s.PutHex32(uvalue);
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}
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} break;
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|
|
|
case DW_FORM_ref_addr: {
|
|
assert(m_cu); // CU must be valid for DW_FORM_ref_addr objects or we will
|
|
// get this wrong
|
|
if (m_cu->GetVersion() <= 2)
|
|
s.Address(uvalue, sizeof(uint64_t) * 2);
|
|
else
|
|
s.Address(uvalue, 4 * 2); // 4 for DWARF32, 8 for DWARF64, but we don't
|
|
// support DWARF64 yet
|
|
break;
|
|
}
|
|
case DW_FORM_ref1:
|
|
cu_relative_offset = true;
|
|
if (verbose)
|
|
s.Printf("cu + 0x%2.2x", (uint8_t)uvalue);
|
|
break;
|
|
case DW_FORM_ref2:
|
|
cu_relative_offset = true;
|
|
if (verbose)
|
|
s.Printf("cu + 0x%4.4x", (uint16_t)uvalue);
|
|
break;
|
|
case DW_FORM_ref4:
|
|
cu_relative_offset = true;
|
|
if (verbose)
|
|
s.Printf("cu + 0x%4.4x", (uint32_t)uvalue);
|
|
break;
|
|
case DW_FORM_ref8:
|
|
cu_relative_offset = true;
|
|
if (verbose)
|
|
s.Printf("cu + 0x%8.8" PRIx64, uvalue);
|
|
break;
|
|
case DW_FORM_ref_udata:
|
|
cu_relative_offset = true;
|
|
if (verbose)
|
|
s.Printf("cu + 0x%" PRIx64, uvalue);
|
|
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 (cu_relative_offset) {
|
|
assert(m_cu); // CU must be valid for DW_FORM_ref forms that are compile
|
|
// unit relative or we will get this wrong
|
|
if (verbose)
|
|
s.PutCString(" => ");
|
|
|
|
s.Printf("{0x%8.8" PRIx64 "}", uvalue + m_cu->GetOffset());
|
|
}
|
|
}
|
|
|
|
const char *DWARFFormValue::AsCString() const {
|
|
SymbolFileDWARF *symbol_file = m_cu->GetSymbolFileDWARF();
|
|
|
|
if (m_form == DW_FORM_string) {
|
|
return m_value.value.cstr;
|
|
} else if (m_form == DW_FORM_strp) {
|
|
if (!symbol_file)
|
|
return nullptr;
|
|
|
|
return symbol_file->get_debug_str_data().PeekCStr(m_value.value.uval);
|
|
} else if (m_form == DW_FORM_GNU_str_index) {
|
|
if (!symbol_file)
|
|
return nullptr;
|
|
|
|
uint32_t index_size = m_cu->IsDWARF64() ? 8 : 4;
|
|
lldb::offset_t offset = m_value.value.uval * index_size;
|
|
dw_offset_t str_offset =
|
|
symbol_file->get_debug_str_offsets_data().GetMaxU64(&offset,
|
|
index_size);
|
|
return symbol_file->get_debug_str_data().PeekCStr(str_offset);
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
dw_addr_t DWARFFormValue::Address() const {
|
|
SymbolFileDWARF *symbol_file = m_cu->GetSymbolFileDWARF();
|
|
|
|
if (m_form == DW_FORM_addr)
|
|
return Unsigned();
|
|
|
|
assert(m_cu);
|
|
assert(m_form == DW_FORM_GNU_addr_index);
|
|
|
|
if (!symbol_file)
|
|
return 0;
|
|
|
|
uint32_t index_size = m_cu->GetAddressByteSize();
|
|
dw_offset_t addr_base = m_cu->GetAddrBase();
|
|
lldb::offset_t offset = addr_base + m_value.value.uval * index_size;
|
|
return symbol_file->get_debug_addr_data().GetMaxU64(&offset, index_size);
|
|
}
|
|
|
|
uint64_t DWARFFormValue::Reference() const {
|
|
uint64_t die_offset = 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_cu); // CU must be valid for DW_FORM_ref forms that are compile
|
|
// unit relative or we will get this wrong
|
|
die_offset += m_cu->GetOffset();
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return die_offset;
|
|
}
|
|
|
|
uint64_t DWARFFormValue::Reference(dw_offset_t base_offset) const {
|
|
uint64_t die_offset = 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:
|
|
die_offset += base_offset;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return die_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;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
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;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
int DWARFFormValue::Compare(const DWARFFormValue &a_value,
|
|
const DWARFFormValue &b_value) {
|
|
dw_form_t a_form = a_value.Form();
|
|
dw_form_t b_form = b_value.Form();
|
|
if (a_form < b_form)
|
|
return -1;
|
|
if (a_form > b_form)
|
|
return 1;
|
|
switch (a_form) {
|
|
case DW_FORM_addr:
|
|
case DW_FORM_flag:
|
|
case DW_FORM_data1:
|
|
case DW_FORM_data2:
|
|
case DW_FORM_data4:
|
|
case DW_FORM_data8:
|
|
case DW_FORM_udata:
|
|
case DW_FORM_ref_addr:
|
|
case DW_FORM_sec_offset:
|
|
case DW_FORM_flag_present:
|
|
case DW_FORM_ref_sig8:
|
|
case DW_FORM_GNU_addr_index: {
|
|
uint64_t a = a_value.Unsigned();
|
|
uint64_t b = b_value.Unsigned();
|
|
if (a < b)
|
|
return -1;
|
|
if (a > b)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
case DW_FORM_sdata: {
|
|
int64_t a = a_value.Signed();
|
|
int64_t b = b_value.Signed();
|
|
if (a < b)
|
|
return -1;
|
|
if (a > b)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
case DW_FORM_string:
|
|
case DW_FORM_strp:
|
|
case DW_FORM_GNU_str_index: {
|
|
const char *a_string = a_value.AsCString();
|
|
const char *b_string = b_value.AsCString();
|
|
if (a_string == b_string)
|
|
return 0;
|
|
else if (a_string && b_string)
|
|
return strcmp(a_string, b_string);
|
|
else if (a_string == NULL)
|
|
return -1; // A string is NULL, and B is valid
|
|
else
|
|
return 1; // A string valid, and B is NULL
|
|
}
|
|
|
|
case DW_FORM_block:
|
|
case DW_FORM_block1:
|
|
case DW_FORM_block2:
|
|
case DW_FORM_block4:
|
|
case DW_FORM_exprloc: {
|
|
uint64_t a_len = a_value.Unsigned();
|
|
uint64_t b_len = b_value.Unsigned();
|
|
if (a_len < b_len)
|
|
return -1;
|
|
if (a_len > b_len)
|
|
return 1;
|
|
// The block lengths are the same
|
|
return memcmp(a_value.BlockData(), b_value.BlockData(), a_value.Unsigned());
|
|
} break;
|
|
|
|
case DW_FORM_ref1:
|
|
case DW_FORM_ref2:
|
|
case DW_FORM_ref4:
|
|
case DW_FORM_ref8:
|
|
case DW_FORM_ref_udata: {
|
|
uint64_t a = a_value.Reference();
|
|
uint64_t b = b_value.Reference();
|
|
if (a < b)
|
|
return -1;
|
|
if (a > b)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
case DW_FORM_indirect:
|
|
assert(!"This shouldn't happen after the form has been extracted...");
|
|
break;
|
|
|
|
default:
|
|
assert(!"Unhandled DW_FORM");
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|