2005-12-22 03:48:16 +08:00
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//===-- llvm/CodeGen/DwarfWriter.cpp - Dwarf Framework ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by James M. Laskey and is distributed under the
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// University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for writing dwarf debug info into asm files.
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//
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//===----------------------------------------------------------------------===//
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2006-01-05 06:28:25 +08:00
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#include "llvm/CodeGen/DwarfWriter.h"
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2005-12-22 03:48:16 +08:00
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2006-01-18 01:31:53 +08:00
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#include "llvm/ADT/StringExtras.h"
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2006-01-04 21:52:30 +08:00
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#include "llvm/CodeGen/AsmPrinter.h"
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2006-01-05 06:28:25 +08:00
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#include "llvm/CodeGen/MachineDebugInfo.h"
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2006-01-04 21:52:30 +08:00
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#include "llvm/Support/CommandLine.h"
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2006-01-05 06:28:25 +08:00
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#include <iostream>
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2006-01-04 21:52:30 +08:00
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2006-01-05 06:28:25 +08:00
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using namespace llvm;
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2006-01-04 21:52:30 +08:00
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static cl::opt<bool>
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DwarfVerbose("dwarf-verbose", cl::Hidden,
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2006-01-18 01:31:53 +08:00
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cl::desc("Add comments to Dwarf directives."));
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2006-01-04 21:52:30 +08:00
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2006-01-18 01:31:53 +08:00
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//===----------------------------------------------------------------------===//
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// Dwarf abbreviations used by this emitter.
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//
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static const unsigned char AbbrevTAG_compile_unit[] = {
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DW_TAG_compile_unit, DW_CHILDREN_yes,
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DW_AT_stmt_list, DW_FORM_data4,
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DW_AT_high_pc, DW_FORM_addr,
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DW_AT_low_pc, DW_FORM_addr,
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DW_AT_producer, DW_FORM_string,
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DW_AT_language, DW_FORM_data1,
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DW_AT_name, DW_FORM_string,
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DW_AT_comp_dir, DW_FORM_string,
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0, 0
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};
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static const unsigned char AbbrevTAG_subprogram[] = {
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DW_TAG_subprogram, DW_CHILDREN_yes,
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DW_AT_sibling, DW_FORM_ref4,
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DW_AT_external, DW_FORM_flag,
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DW_AT_name, DW_FORM_string,
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DW_AT_decl_file, DW_FORM_data1,
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DW_AT_decl_line, DW_FORM_data1,
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DW_AT_prototyped, DW_FORM_flag,
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DW_AT_type, DW_FORM_ref4,
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DW_AT_low_pc, DW_FORM_addr,
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DW_AT_high_pc, DW_FORM_addr,
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DW_AT_frame_base, DW_FORM_block1,
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0, 0
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};
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static const unsigned char AbbrevTAG_formal_parameter[] = {
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DW_TAG_formal_parameter, DW_CHILDREN_no,
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DW_AT_name, DW_FORM_string,
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DW_AT_decl_file, DW_FORM_data1,
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DW_AT_decl_line, DW_FORM_data1,
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DW_AT_type, DW_FORM_ref4,
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DW_AT_location, DW_FORM_block1,
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0, 0
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};
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static const unsigned char AbbrevTAG_base_type[] = {
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DW_TAG_base_type, DW_CHILDREN_no,
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DW_AT_name, DW_FORM_string,
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DW_AT_byte_size, DW_FORM_data1,
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DW_AT_encoding, DW_FORM_data1,
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0, 0
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};
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static const unsigned char AbbrevTAG_pointer_type[] = {
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DW_TAG_pointer_type, DW_CHILDREN_no,
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DW_AT_byte_size, DW_FORM_data1,
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DW_AT_type, DW_FORM_ref4,
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0, 0
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};
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static const unsigned char AbbrevTAG_array_type[] = {
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DW_TAG_array_type, DW_CHILDREN_yes,
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DW_AT_sibling, DW_FORM_ref4,
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DW_AT_type, DW_FORM_ref4,
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0, 0
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};
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static const unsigned char AbbrevTAG_subrange_type[] = {
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DW_TAG_subrange_type, DW_CHILDREN_no,
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0, 0
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};
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static const unsigned char AbbrevTAG_variable[] = {
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DW_TAG_variable, DW_CHILDREN_no,
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DW_AT_name, DW_FORM_string,
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DW_AT_type, DW_FORM_ref4,
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DW_AT_external, DW_FORM_flag,
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DW_AT_artificial, DW_FORM_flag,
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DW_AT_declaration, DW_FORM_flag,
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0, 0
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};
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//===----------------------------------------------------------------------===//
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/// TagString - Return the string for the specified tag.
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2006-01-04 21:52:30 +08:00
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///
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2006-01-18 01:31:53 +08:00
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static const char *TagString(unsigned Tag) {
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switch(Tag) {
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case DW_TAG_array_type: return "TAG_array_type";
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case DW_TAG_class_type: return "TAG_class_type";
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case DW_TAG_entry_point: return "TAG_entry_point";
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case DW_TAG_enumeration_type: return "TAG_enumeration_type";
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case DW_TAG_formal_parameter: return "TAG_formal_parameter";
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case DW_TAG_imported_declaration: return "TAG_imported_declaration";
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case DW_TAG_label: return "TAG_label";
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case DW_TAG_lexical_block: return "TAG_lexical_block";
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case DW_TAG_member: return "TAG_member";
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case DW_TAG_pointer_type: return "TAG_pointer_type";
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case DW_TAG_reference_type: return "TAG_reference_type";
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case DW_TAG_compile_unit: return "TAG_compile_unit";
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case DW_TAG_string_type: return "TAG_string_type";
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case DW_TAG_structure_type: return "TAG_structure_type";
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case DW_TAG_subroutine_type: return "TAG_subroutine_type";
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case DW_TAG_typedef: return "TAG_typedef";
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case DW_TAG_union_type: return "TAG_union_type";
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case DW_TAG_unspecified_parameters: return "TAG_unspecified_parameters";
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case DW_TAG_variant: return "TAG_variant";
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case DW_TAG_common_block: return "TAG_common_block";
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case DW_TAG_common_inclusion: return "TAG_common_inclusion";
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case DW_TAG_inheritance: return "TAG_inheritance";
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case DW_TAG_inlined_subroutine: return "TAG_inlined_subroutine";
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case DW_TAG_module: return "TAG_module";
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case DW_TAG_ptr_to_member_type: return "TAG_ptr_to_member_type";
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case DW_TAG_set_type: return "TAG_set_type";
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case DW_TAG_subrange_type: return "TAG_subrange_type";
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case DW_TAG_with_stmt: return "TAG_with_stmt";
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case DW_TAG_access_declaration: return "TAG_access_declaration";
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case DW_TAG_base_type: return "TAG_base_type";
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case DW_TAG_catch_block: return "TAG_catch_block";
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case DW_TAG_const_type: return "TAG_const_type";
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case DW_TAG_constant: return "TAG_constant";
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case DW_TAG_enumerator: return "TAG_enumerator";
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case DW_TAG_file_type: return "TAG_file_type";
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case DW_TAG_friend: return "TAG_friend";
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case DW_TAG_namelist: return "TAG_namelist";
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case DW_TAG_namelist_item: return "TAG_namelist_item";
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case DW_TAG_packed_type: return "TAG_packed_type";
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case DW_TAG_subprogram: return "TAG_subprogram";
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case DW_TAG_template_type_parameter: return "TAG_template_type_parameter";
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case DW_TAG_template_value_parameter: return "TAG_template_value_parameter";
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case DW_TAG_thrown_type: return "TAG_thrown_type";
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case DW_TAG_try_block: return "TAG_try_block";
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case DW_TAG_variant_part: return "TAG_variant_part";
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case DW_TAG_variable: return "TAG_variable";
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case DW_TAG_volatile_type: return "TAG_volatile_type";
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case DW_TAG_dwarf_procedure: return "TAG_dwarf_procedure";
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case DW_TAG_restrict_type: return "TAG_restrict_type";
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case DW_TAG_interface_type: return "TAG_interface_type";
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case DW_TAG_namespace: return "TAG_namespace";
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case DW_TAG_imported_module: return "TAG_imported_module";
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case DW_TAG_unspecified_type: return "TAG_unspecified_type";
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case DW_TAG_partial_unit: return "TAG_partial_unit";
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case DW_TAG_imported_unit: return "TAG_imported_unit";
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case DW_TAG_condition: return "TAG_condition";
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case DW_TAG_shared_type: return "TAG_shared_type";
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case DW_TAG_lo_user: return "TAG_lo_user";
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case DW_TAG_hi_user: return "TAG_hi_user";
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2006-01-04 21:52:30 +08:00
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}
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2006-01-18 01:31:53 +08:00
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assert(0 && "Unknown Dwarf Tag");
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return "";
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}
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/// ChildrenString - Return the string for the specified children flag.
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///
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static const char *ChildrenString(unsigned Children) {
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switch(Children) {
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case DW_CHILDREN_no: return "CHILDREN_no";
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case DW_CHILDREN_yes: return "CHILDREN_yes";
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2006-01-04 21:52:30 +08:00
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}
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2006-01-18 01:31:53 +08:00
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assert(0 && "Unknown Dwarf ChildrenFlag");
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return "";
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2006-01-04 21:52:30 +08:00
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}
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2006-01-18 01:31:53 +08:00
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/// AttributeString - Return the string for the specified attribute.
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2006-01-04 21:52:30 +08:00
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///
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2006-01-18 01:31:53 +08:00
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static const char *AttributeString(unsigned Attribute) {
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switch(Attribute) {
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case DW_AT_sibling: return "AT_sibling";
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case DW_AT_location: return "AT_location";
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case DW_AT_name: return "AT_name";
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case DW_AT_ordering: return "AT_ordering";
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case DW_AT_byte_size: return "AT_byte_size";
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case DW_AT_bit_offset: return "AT_bit_offset";
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case DW_AT_bit_size: return "AT_bit_size";
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case DW_AT_stmt_list: return "AT_stmt_list";
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case DW_AT_low_pc: return "AT_low_pc";
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case DW_AT_high_pc: return "AT_high_pc";
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case DW_AT_language: return "AT_language";
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case DW_AT_discr: return "AT_discr";
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case DW_AT_discr_value: return "AT_discr_value";
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case DW_AT_visibility: return "AT_visibility";
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case DW_AT_import: return "AT_import";
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case DW_AT_string_length: return "AT_string_length";
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case DW_AT_common_reference: return "AT_common_reference";
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case DW_AT_comp_dir: return "AT_comp_dir";
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case DW_AT_const_value: return "AT_const_value";
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case DW_AT_containing_type: return "AT_containing_type";
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case DW_AT_default_value: return "AT_default_value";
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case DW_AT_inline: return "AT_inline";
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case DW_AT_is_optional: return "AT_is_optional";
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case DW_AT_lower_bound: return "AT_lower_bound";
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case DW_AT_producer: return "AT_producer";
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case DW_AT_prototyped: return "AT_prototyped";
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case DW_AT_return_addr: return "AT_return_addr";
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case DW_AT_start_scope: return "AT_start_scope";
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case DW_AT_bit_stride: return "AT_bit_stride";
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case DW_AT_upper_bound: return "AT_upper_bound";
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case DW_AT_abstract_origin: return "AT_abstract_origin";
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case DW_AT_accessibility: return "AT_accessibility";
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case DW_AT_address_class: return "AT_address_class";
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case DW_AT_artificial: return "AT_artificial";
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case DW_AT_base_types: return "AT_base_types";
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case DW_AT_calling_convention: return "AT_calling_convention";
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case DW_AT_count: return "AT_count";
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case DW_AT_data_member_location: return "AT_data_member_location";
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case DW_AT_decl_column: return "AT_decl_column";
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case DW_AT_decl_file: return "AT_decl_file";
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case DW_AT_decl_line: return "AT_decl_line";
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case DW_AT_declaration: return "AT_declaration";
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case DW_AT_discr_list: return "AT_discr_list";
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case DW_AT_encoding: return "AT_encoding";
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case DW_AT_external: return "AT_external";
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case DW_AT_frame_base: return "AT_frame_base";
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case DW_AT_friend: return "AT_friend";
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case DW_AT_identifier_case: return "AT_identifier_case";
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case DW_AT_macro_info: return "AT_macro_info";
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case DW_AT_namelist_item: return "AT_namelist_item";
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case DW_AT_priority: return "AT_priority";
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case DW_AT_segment: return "AT_segment";
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case DW_AT_specification: return "AT_specification";
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case DW_AT_static_link: return "AT_static_link";
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case DW_AT_type: return "AT_type";
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case DW_AT_use_location: return "AT_use_location";
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case DW_AT_variable_parameter: return "AT_variable_parameter";
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case DW_AT_virtuality: return "AT_virtuality";
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case DW_AT_vtable_elem_location: return "AT_vtable_elem_location";
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case DW_AT_allocated: return "AT_allocated";
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case DW_AT_associated: return "AT_associated";
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case DW_AT_data_location: return "AT_data_location";
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case DW_AT_byte_stride: return "AT_byte_stride";
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case DW_AT_entry_pc: return "AT_entry_pc";
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case DW_AT_use_UTF8: return "AT_use_UTF8";
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case DW_AT_extension: return "AT_extension";
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case DW_AT_ranges: return "AT_ranges";
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case DW_AT_trampoline: return "AT_trampoline";
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case DW_AT_call_column: return "AT_call_column";
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case DW_AT_call_file: return "AT_call_file";
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case DW_AT_call_line: return "AT_call_line";
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case DW_AT_description: return "AT_description";
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case DW_AT_binary_scale: return "AT_binary_scale";
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case DW_AT_decimal_scale: return "AT_decimal_scale";
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case DW_AT_small: return "AT_small";
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case DW_AT_decimal_sign: return "AT_decimal_sign";
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|
|
case DW_AT_digit_count: return "AT_digit_count";
|
|
|
|
|
case DW_AT_picture_string: return "AT_picture_string";
|
|
|
|
|
case DW_AT_mutable: return "AT_mutable";
|
|
|
|
|
case DW_AT_threads_scaled: return "AT_threads_scaled";
|
|
|
|
|
case DW_AT_explicit: return "AT_explicit";
|
|
|
|
|
case DW_AT_object_pointer: return "AT_object_pointer";
|
|
|
|
|
case DW_AT_endianity: return "AT_endianity";
|
|
|
|
|
case DW_AT_elemental: return "AT_elemental";
|
|
|
|
|
case DW_AT_pure: return "AT_pure";
|
|
|
|
|
case DW_AT_recursive: return "AT_recursive";
|
|
|
|
|
case DW_AT_lo_user: return "AT_lo_user";
|
|
|
|
|
case DW_AT_hi_user: return "AT_hi_user";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Attribute");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// FormEncodingString - Return the string for the specified form encoding.
|
|
|
|
|
///
|
|
|
|
|
static const char *FormEncodingString(unsigned Encoding) {
|
|
|
|
|
switch(Encoding) {
|
|
|
|
|
case DW_FORM_addr: return "FORM_addr";
|
|
|
|
|
case DW_FORM_block2: return "FORM_block2";
|
|
|
|
|
case DW_FORM_block4: return "FORM_block4";
|
|
|
|
|
case DW_FORM_data2: return "FORM_data2";
|
|
|
|
|
case DW_FORM_data4: return "FORM_data4";
|
|
|
|
|
case DW_FORM_data8: return "FORM_data8";
|
|
|
|
|
case DW_FORM_string: return "FORM_string";
|
|
|
|
|
case DW_FORM_block: return "FORM_block";
|
|
|
|
|
case DW_FORM_block1: return "FORM_block1";
|
|
|
|
|
case DW_FORM_data1: return "FORM_data1";
|
|
|
|
|
case DW_FORM_flag: return "FORM_flag";
|
|
|
|
|
case DW_FORM_sdata: return "FORM_sdata";
|
|
|
|
|
case DW_FORM_strp: return "FORM_strp";
|
|
|
|
|
case DW_FORM_udata: return "FORM_udata";
|
|
|
|
|
case DW_FORM_ref_addr: return "FORM_ref_addr";
|
|
|
|
|
case DW_FORM_ref1: return "FORM_ref1";
|
|
|
|
|
case DW_FORM_ref2: return "FORM_ref2";
|
|
|
|
|
case DW_FORM_ref4: return "FORM_ref4";
|
|
|
|
|
case DW_FORM_ref8: return "FORM_ref8";
|
|
|
|
|
case DW_FORM_ref_udata: return "FORM_ref_udata";
|
|
|
|
|
case DW_FORM_indirect: return "FORM_indirect";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Form Encoding");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// OperationEncodingString - Return the string for the specified operation
|
|
|
|
|
/// encoding.
|
|
|
|
|
static const char *OperationEncodingString(unsigned Encoding) {
|
|
|
|
|
switch(Encoding) {
|
|
|
|
|
case DW_OP_addr: return "OP_addr";
|
|
|
|
|
case DW_OP_deref: return "OP_deref";
|
|
|
|
|
case DW_OP_const1u: return "OP_const1u";
|
|
|
|
|
case DW_OP_const1s: return "OP_const1s";
|
|
|
|
|
case DW_OP_const2u: return "OP_const2u";
|
|
|
|
|
case DW_OP_const2s: return "OP_const2s";
|
|
|
|
|
case DW_OP_const4u: return "OP_const4u";
|
|
|
|
|
case DW_OP_const4s: return "OP_const4s";
|
|
|
|
|
case DW_OP_const8u: return "OP_const8u";
|
|
|
|
|
case DW_OP_const8s: return "OP_const8s";
|
|
|
|
|
case DW_OP_constu: return "OP_constu";
|
|
|
|
|
case DW_OP_consts: return "OP_consts";
|
|
|
|
|
case DW_OP_dup: return "OP_dup";
|
|
|
|
|
case DW_OP_drop: return "OP_drop";
|
|
|
|
|
case DW_OP_over: return "OP_over";
|
|
|
|
|
case DW_OP_pick: return "OP_pick";
|
|
|
|
|
case DW_OP_swap: return "OP_swap";
|
|
|
|
|
case DW_OP_rot: return "OP_rot";
|
|
|
|
|
case DW_OP_xderef: return "OP_xderef";
|
|
|
|
|
case DW_OP_abs: return "OP_abs";
|
|
|
|
|
case DW_OP_and: return "OP_and";
|
|
|
|
|
case DW_OP_div: return "OP_div";
|
|
|
|
|
case DW_OP_minus: return "OP_minus";
|
|
|
|
|
case DW_OP_mod: return "OP_mod";
|
|
|
|
|
case DW_OP_mul: return "OP_mul";
|
|
|
|
|
case DW_OP_neg: return "OP_neg";
|
|
|
|
|
case DW_OP_not: return "OP_not";
|
|
|
|
|
case DW_OP_or: return "OP_or";
|
|
|
|
|
case DW_OP_plus: return "OP_plus";
|
|
|
|
|
case DW_OP_plus_uconst: return "OP_plus_uconst";
|
|
|
|
|
case DW_OP_shl: return "OP_shl";
|
|
|
|
|
case DW_OP_shr: return "OP_shr";
|
|
|
|
|
case DW_OP_shra: return "OP_shra";
|
|
|
|
|
case DW_OP_xor: return "OP_xor";
|
|
|
|
|
case DW_OP_skip: return "OP_skip";
|
|
|
|
|
case DW_OP_bra: return "OP_bra";
|
|
|
|
|
case DW_OP_eq: return "OP_eq";
|
|
|
|
|
case DW_OP_ge: return "OP_ge";
|
|
|
|
|
case DW_OP_gt: return "OP_gt";
|
|
|
|
|
case DW_OP_le: return "OP_le";
|
|
|
|
|
case DW_OP_lt: return "OP_lt";
|
|
|
|
|
case DW_OP_ne: return "OP_ne";
|
|
|
|
|
case DW_OP_lit0: return "OP_lit0";
|
|
|
|
|
case DW_OP_lit1: return "OP_lit1";
|
|
|
|
|
case DW_OP_lit31: return "OP_lit31";
|
|
|
|
|
case DW_OP_reg0: return "OP_reg0";
|
|
|
|
|
case DW_OP_reg1: return "OP_reg1";
|
|
|
|
|
case DW_OP_reg31: return "OP_reg31";
|
|
|
|
|
case DW_OP_breg0: return "OP_breg0";
|
|
|
|
|
case DW_OP_breg1: return "OP_breg1";
|
|
|
|
|
case DW_OP_breg31: return "OP_breg31";
|
|
|
|
|
case DW_OP_regx: return "OP_regx";
|
|
|
|
|
case DW_OP_fbreg: return "OP_fbreg";
|
|
|
|
|
case DW_OP_bregx: return "OP_bregx";
|
|
|
|
|
case DW_OP_piece: return "OP_piece";
|
|
|
|
|
case DW_OP_deref_size: return "OP_deref_size";
|
|
|
|
|
case DW_OP_xderef_size: return "OP_xderef_size";
|
|
|
|
|
case DW_OP_nop: return "OP_nop";
|
|
|
|
|
case DW_OP_push_object_address: return "OP_push_object_address";
|
|
|
|
|
case DW_OP_call2: return "OP_call2";
|
|
|
|
|
case DW_OP_call4: return "OP_call4";
|
|
|
|
|
case DW_OP_call_ref: return "OP_call_ref";
|
|
|
|
|
case DW_OP_form_tls_address: return "OP_form_tls_address";
|
|
|
|
|
case DW_OP_call_frame_cfa: return "OP_call_frame_cfa";
|
|
|
|
|
case DW_OP_lo_user: return "OP_lo_user";
|
|
|
|
|
case DW_OP_hi_user: return "OP_hi_user";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Operation Encoding");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// AttributeEncodingString - Return the string for the specified attribute
|
|
|
|
|
/// encoding.
|
|
|
|
|
static const char *AttributeEncodingString(unsigned Encoding) {
|
|
|
|
|
switch(Encoding) {
|
|
|
|
|
case DW_ATE_address: return "ATE_address";
|
|
|
|
|
case DW_ATE_boolean: return "ATE_boolean";
|
|
|
|
|
case DW_ATE_complex_float: return "ATE_complex_float";
|
|
|
|
|
case DW_ATE_float: return "ATE_float";
|
|
|
|
|
case DW_ATE_signed: return "ATE_signed";
|
|
|
|
|
case DW_ATE_signed_char: return "ATE_signed_char";
|
|
|
|
|
case DW_ATE_unsigned: return "ATE_unsigned";
|
|
|
|
|
case DW_ATE_unsigned_char: return "ATE_unsigned_char";
|
|
|
|
|
case DW_ATE_imaginary_float: return "ATE_imaginary_float";
|
|
|
|
|
case DW_ATE_packed_decimal: return "ATE_packed_decimal";
|
|
|
|
|
case DW_ATE_numeric_string: return "ATE_numeric_string";
|
|
|
|
|
case DW_ATE_edited: return "ATE_edited";
|
|
|
|
|
case DW_ATE_signed_fixed: return "ATE_signed_fixed";
|
|
|
|
|
case DW_ATE_unsigned_fixed: return "ATE_unsigned_fixed";
|
|
|
|
|
case DW_ATE_decimal_float: return "ATE_decimal_float";
|
|
|
|
|
case DW_ATE_lo_user: return "ATE_lo_user";
|
|
|
|
|
case DW_ATE_hi_user: return "ATE_hi_user";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Attribute Encoding");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// DecimalSignString - Return the string for the specified decimal sign
|
|
|
|
|
/// attribute.
|
|
|
|
|
static const char *DecimalSignString(unsigned Sign) {
|
|
|
|
|
switch(Sign) {
|
|
|
|
|
case DW_DS_unsigned: return "DS_unsigned";
|
|
|
|
|
case DW_DS_leading_overpunch: return "DS_leading_overpunch";
|
|
|
|
|
case DW_DS_trailing_overpunch: return "DS_trailing_overpunch";
|
|
|
|
|
case DW_DS_leading_separate: return "DS_leading_separate";
|
|
|
|
|
case DW_DS_trailing_separate: return "DS_trailing_separate";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Decimal Sign Attribute");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EndianityString - Return the string for the specified endianity.
|
|
|
|
|
///
|
|
|
|
|
static const char *EndianityString(unsigned Endian) {
|
|
|
|
|
switch(Endian) {
|
|
|
|
|
case DW_END_default: return "END_default";
|
|
|
|
|
case DW_END_big: return "END_big";
|
|
|
|
|
case DW_END_little: return "END_little";
|
|
|
|
|
case DW_END_lo_user: return "END_lo_user";
|
|
|
|
|
case DW_END_hi_user: return "END_hi_user";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Endianity");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// AccessibilityString - Return the string for the specified accessibility.
|
|
|
|
|
///
|
|
|
|
|
static const char *AccessibilityString(unsigned Access) {
|
|
|
|
|
switch(Access) {
|
|
|
|
|
// Accessibility codes
|
|
|
|
|
case DW_ACCESS_public: return "ACCESS_public";
|
|
|
|
|
case DW_ACCESS_protected: return "ACCESS_protected";
|
|
|
|
|
case DW_ACCESS_private: return "ACCESS_private";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Accessibility");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// VisibilityString - Return the string for the specified visibility.
|
|
|
|
|
///
|
|
|
|
|
static const char *VisibilityString(unsigned Visibility) {
|
|
|
|
|
switch(Visibility) {
|
|
|
|
|
case DW_VIS_local: return "VIS_local";
|
|
|
|
|
case DW_VIS_exported: return "VIS_exported";
|
|
|
|
|
case DW_VIS_qualified: return "VIS_qualified";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Visibility");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// VirtualityString - Return the string for the specified virtuality.
|
|
|
|
|
///
|
|
|
|
|
static const char *VirtualityString(unsigned Virtuality) {
|
|
|
|
|
switch(Virtuality) {
|
|
|
|
|
case DW_VIRTUALITY_none: return "VIRTUALITY_none";
|
|
|
|
|
case DW_VIRTUALITY_virtual: return "VIRTUALITY_virtual";
|
|
|
|
|
case DW_VIRTUALITY_pure_virtual: return "VIRTUALITY_pure_virtual";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Virtuality");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// LanguageString - Return the string for the specified language.
|
|
|
|
|
///
|
|
|
|
|
static const char *LanguageString(unsigned Language) {
|
|
|
|
|
switch(Language) {
|
|
|
|
|
case DW_LANG_C89: return "LANG_C89";
|
|
|
|
|
case DW_LANG_C: return "LANG_C";
|
|
|
|
|
case DW_LANG_Ada83: return "LANG_Ada83";
|
|
|
|
|
case DW_LANG_C_plus_plus: return "LANG_C_plus_plus";
|
|
|
|
|
case DW_LANG_Cobol74: return "LANG_Cobol74";
|
|
|
|
|
case DW_LANG_Cobol85: return "LANG_Cobol85";
|
|
|
|
|
case DW_LANG_Fortran77: return "LANG_Fortran77";
|
|
|
|
|
case DW_LANG_Fortran90: return "LANG_Fortran90";
|
|
|
|
|
case DW_LANG_Pascal83: return "LANG_Pascal83";
|
|
|
|
|
case DW_LANG_Modula2: return "LANG_Modula2";
|
|
|
|
|
case DW_LANG_Java: return "LANG_Java";
|
|
|
|
|
case DW_LANG_C99: return "LANG_C99";
|
|
|
|
|
case DW_LANG_Ada95: return "LANG_Ada95";
|
|
|
|
|
case DW_LANG_Fortran95: return "LANG_Fortran95";
|
|
|
|
|
case DW_LANG_PLI: return "LANG_PLI";
|
|
|
|
|
case DW_LANG_ObjC: return "LANG_ObjC";
|
|
|
|
|
case DW_LANG_ObjC_plus_plus: return "LANG_ObjC_plus_plus";
|
|
|
|
|
case DW_LANG_UPC: return "LANG_UPC";
|
|
|
|
|
case DW_LANG_D: return "LANG_D";
|
|
|
|
|
case DW_LANG_lo_user: return "LANG_lo_user";
|
|
|
|
|
case DW_LANG_hi_user: return "LANG_hi_user";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Language");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// CaseString - Return the string for the specified identifier case.
|
|
|
|
|
///
|
|
|
|
|
static const char *CaseString(unsigned Case) {
|
|
|
|
|
switch(Case) {
|
|
|
|
|
case DW_ID_case_sensitive: return "ID_case_sensitive";
|
|
|
|
|
case DW_ID_up_case: return "ID_up_case";
|
|
|
|
|
case DW_ID_down_case: return "ID_down_case";
|
|
|
|
|
case DW_ID_case_insensitive: return "ID_case_insensitive";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Identifier Case");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// ConventionString - Return the string for the specified calling convention.
|
|
|
|
|
///
|
|
|
|
|
static const char *ConventionString(unsigned Convention) {
|
|
|
|
|
switch(Convention) {
|
|
|
|
|
case DW_CC_normal: return "CC_normal";
|
|
|
|
|
case DW_CC_program: return "CC_program";
|
|
|
|
|
case DW_CC_nocall: return "CC_nocall";
|
|
|
|
|
case DW_CC_lo_user: return "CC_lo_user";
|
|
|
|
|
case DW_CC_hi_user: return "CC_hi_user";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Calling Convention");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// InlineCodeString - Return the string for the specified inline code.
|
|
|
|
|
///
|
|
|
|
|
static const char *InlineCodeString(unsigned Code) {
|
|
|
|
|
switch(Code) {
|
|
|
|
|
case DW_INL_not_inlined: return "INL_not_inlined";
|
|
|
|
|
case DW_INL_inlined: return "INL_inlined";
|
|
|
|
|
case DW_INL_declared_not_inlined: return "INL_declared_not_inlined";
|
|
|
|
|
case DW_INL_declared_inlined: return "INL_declared_inlined";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Inline Code");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// ArrayOrderString - Return the string for the specified array order.
|
|
|
|
|
///
|
|
|
|
|
static const char *ArrayOrderString(unsigned Order) {
|
|
|
|
|
switch(Order) {
|
|
|
|
|
case DW_ORD_row_major: return "ORD_row_major";
|
|
|
|
|
case DW_ORD_col_major: return "ORD_col_major";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Array Order");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// DiscriminantString - Return the string for the specified discriminant
|
|
|
|
|
/// descriptor.
|
|
|
|
|
static const char *DiscriminantString(unsigned Discriminant) {
|
|
|
|
|
switch(Discriminant) {
|
|
|
|
|
case DW_DSC_label: return "DSC_label";
|
|
|
|
|
case DW_DSC_range: return "DSC_range";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Discriminant Descriptor");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// LNStandardString - Return the string for the specified line number standard.
|
|
|
|
|
///
|
|
|
|
|
static const char *LNStandardString(unsigned Standard) {
|
|
|
|
|
switch(Standard) {
|
|
|
|
|
case DW_LNS_copy: return "LNS_copy";
|
|
|
|
|
case DW_LNS_advance_pc: return "LNS_advance_pc";
|
|
|
|
|
case DW_LNS_advance_line: return "LNS_advance_line";
|
|
|
|
|
case DW_LNS_set_file: return "LNS_set_file";
|
|
|
|
|
case DW_LNS_set_column: return "LNS_set_column";
|
|
|
|
|
case DW_LNS_negate_stmt: return "LNS_negate_stmt";
|
|
|
|
|
case DW_LNS_set_basic_block: return "LNS_set_basic_block";
|
|
|
|
|
case DW_LNS_const_add_pc: return "LNS_const_add_pc";
|
|
|
|
|
case DW_LNS_fixed_advance_pc: return "LNS_fixed_advance_pc";
|
|
|
|
|
case DW_LNS_set_prologue_end: return "LNS_set_prologue_end";
|
|
|
|
|
case DW_LNS_set_epilogue_begin: return "LNS_set_epilogue_begin";
|
|
|
|
|
case DW_LNS_set_isa: return "LNS_set_isa";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Line Number Standard");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// LNExtendedString - Return the string for the specified line number extended
|
|
|
|
|
/// opcode encodings.
|
|
|
|
|
static const char *LNExtendedString(unsigned Encoding) {
|
|
|
|
|
switch(Encoding) {
|
|
|
|
|
// Line Number Extended Opcode Encodings
|
|
|
|
|
case DW_LNE_end_sequence: return "LNE_end_sequence";
|
|
|
|
|
case DW_LNE_set_address: return "LNE_set_address";
|
|
|
|
|
case DW_LNE_define_file: return "LNE_define_file";
|
|
|
|
|
case DW_LNE_lo_user: return "LNE_lo_user";
|
|
|
|
|
case DW_LNE_hi_user: return "LNE_hi_user";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Line Number Extended Opcode Encoding");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// MacinfoString - Return the string for the specified macinfo type encodings.
|
|
|
|
|
///
|
|
|
|
|
static const char *MacinfoString(unsigned Encoding) {
|
|
|
|
|
switch(Encoding) {
|
|
|
|
|
// Macinfo Type Encodings
|
|
|
|
|
case DW_MACINFO_define: return "MACINFO_define";
|
|
|
|
|
case DW_MACINFO_undef: return "MACINFO_undef";
|
|
|
|
|
case DW_MACINFO_start_file: return "MACINFO_start_file";
|
|
|
|
|
case DW_MACINFO_end_file: return "MACINFO_end_file";
|
|
|
|
|
case DW_MACINFO_vendor_ext: return "MACINFO_vendor_ext";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Macinfo Type Encodings");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// CallFrameString - Return the string for the specified call frame instruction
|
|
|
|
|
/// encodings.
|
|
|
|
|
static const char *CallFrameString(unsigned Encoding) {
|
|
|
|
|
switch(Encoding) {
|
|
|
|
|
case DW_CFA_advance_loc: return "CFA_advance_loc";
|
|
|
|
|
case DW_CFA_offset: return "CFA_offset";
|
|
|
|
|
case DW_CFA_restore: return "CFA_restore";
|
|
|
|
|
case DW_CFA_set_loc: return "CFA_set_loc";
|
|
|
|
|
case DW_CFA_advance_loc1: return "CFA_advance_loc1";
|
|
|
|
|
case DW_CFA_advance_loc2: return "CFA_advance_loc2";
|
|
|
|
|
case DW_CFA_advance_loc4: return "CFA_advance_loc4";
|
|
|
|
|
case DW_CFA_offset_extended: return "CFA_offset_extended";
|
|
|
|
|
case DW_CFA_restore_extended: return "CFA_restore_extended";
|
|
|
|
|
case DW_CFA_undefined: return "CFA_undefined";
|
|
|
|
|
case DW_CFA_same_value: return "CFA_same_value";
|
|
|
|
|
case DW_CFA_register: return "CFA_register";
|
|
|
|
|
case DW_CFA_remember_state: return "CFA_remember_state";
|
|
|
|
|
case DW_CFA_restore_state: return "CFA_restore_state";
|
|
|
|
|
case DW_CFA_def_cfa: return "CFA_def_cfa";
|
|
|
|
|
case DW_CFA_def_cfa_register: return "CFA_def_cfa_register";
|
|
|
|
|
case DW_CFA_def_cfa_offset: return "CFA_def_cfa_offset";
|
|
|
|
|
case DW_CFA_def_cfa_expression: return "CFA_def_cfa_expression";
|
|
|
|
|
case DW_CFA_expression: return "CFA_expression";
|
|
|
|
|
case DW_CFA_offset_extended_sf: return "CFA_offset_extended_sf";
|
|
|
|
|
case DW_CFA_def_cfa_sf: return "CFA_def_cfa_sf";
|
|
|
|
|
case DW_CFA_def_cfa_offset_sf: return "CFA_def_cfa_offset_sf";
|
|
|
|
|
case DW_CFA_val_offset: return "CFA_val_offset";
|
|
|
|
|
case DW_CFA_val_offset_sf: return "CFA_val_offset_sf";
|
|
|
|
|
case DW_CFA_val_expression: return "CFA_val_expression";
|
|
|
|
|
case DW_CFA_lo_user: return "CFA_lo_user";
|
|
|
|
|
case DW_CFA_hi_user: return "CFA_hi_user";
|
|
|
|
|
}
|
|
|
|
|
assert(0 && "Unknown Dwarf Call Frame Instruction Encodings");
|
|
|
|
|
return "";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
|
|
/// EmitValue - Emit integer of appropriate size.
|
|
|
|
|
///
|
|
|
|
|
void DIEInteger::EmitValue(const DwarfWriter &DW, unsigned Form) const {
|
|
|
|
|
switch (Form) {
|
|
|
|
|
case DW_FORM_data1: DW.EmitByte(Value); break;
|
|
|
|
|
case DW_FORM_data2: DW.EmitShort(Value); break;
|
|
|
|
|
case DW_FORM_data4: DW.EmitLong(Value); break;
|
|
|
|
|
default: assert(0 && "DIE Value form not supported yet"); break;
|
2006-01-04 21:52:30 +08:00
|
|
|
}
|
2006-01-18 01:31:53 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// SizeOf - Determine size of integer value in bytes.
|
|
|
|
|
///
|
|
|
|
|
unsigned DIEInteger::SizeOf(const DwarfWriter &DW, unsigned Form) const {
|
|
|
|
|
switch (Form) {
|
|
|
|
|
case DW_FORM_data1: return sizeof(int8_t);
|
|
|
|
|
case DW_FORM_data2: return sizeof(int16_t);
|
|
|
|
|
case DW_FORM_data4: return sizeof(int32_t);
|
|
|
|
|
default: assert(0 && "DIE Value form not supported yet"); break;
|
|
|
|
|
}
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
|
|
/// EmitValue - Emit string value.
|
|
|
|
|
///
|
|
|
|
|
void DIEString::EmitValue(const DwarfWriter &DW, unsigned Form) const {
|
|
|
|
|
DW.EmitString(Value);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// SizeOf - Determine size of string value in bytes.
|
|
|
|
|
///
|
|
|
|
|
unsigned DIEString::SizeOf(const DwarfWriter &DW, unsigned Form) const {
|
|
|
|
|
return Value.size() + sizeof(int8_t);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
|
|
/// EmitValue - Emit label value.
|
|
|
|
|
///
|
|
|
|
|
void DIELabel::EmitValue(const DwarfWriter &DW, unsigned Form) const {
|
|
|
|
|
DW.EmitLabelReference(Value);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// SizeOf - Determine size of label value in bytes.
|
|
|
|
|
///
|
|
|
|
|
unsigned DIELabel::SizeOf(const DwarfWriter &DW, unsigned Form) const {
|
|
|
|
|
return DW.getAddressSize();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
|
|
/// EmitValue - Emit delta value.
|
|
|
|
|
///
|
|
|
|
|
void DIEDelta::EmitValue(const DwarfWriter &DW, unsigned Form) const {
|
|
|
|
|
DW.EmitDifference(Value1, Value2);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// SizeOf - Determine size of delta value in bytes.
|
|
|
|
|
///
|
|
|
|
|
unsigned DIEDelta::SizeOf(const DwarfWriter &DW, unsigned Form) const {
|
|
|
|
|
return DW.getAddressSize();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
|
|
/// PrintHex - Print a value as a hexidecimal value.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::PrintHex(int Value) const {
|
|
|
|
|
O << "0x" << std::hex << Value << std::dec;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EOL - Print a newline character to asm stream. If a comment is present
|
|
|
|
|
/// then it will be printed first. Comments should not contain '\n'.
|
|
|
|
|
void DwarfWriter::EOL(const std::string &Comment) const {
|
2006-01-04 21:52:30 +08:00
|
|
|
if (DwarfVerbose) {
|
|
|
|
|
O << "\t"
|
2006-01-05 06:28:25 +08:00
|
|
|
<< Asm->CommentString
|
2006-01-04 21:52:30 +08:00
|
|
|
<< " "
|
2006-01-18 01:31:53 +08:00
|
|
|
<< Comment;
|
2006-01-04 21:52:30 +08:00
|
|
|
}
|
|
|
|
|
O << "\n";
|
|
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
/// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
|
|
|
|
|
/// unsigned leb128 value.
|
|
|
|
|
void DwarfWriter::EmitULEB128Bytes(unsigned Value) const {
|
|
|
|
|
if (hasLEB128) {
|
|
|
|
|
O << "\t.uleb128\t"
|
|
|
|
|
<< Value;
|
|
|
|
|
} else {
|
|
|
|
|
O << Asm->Data8bitsDirective;
|
|
|
|
|
PrintULEB128(Value);
|
|
|
|
|
}
|
2006-01-05 06:28:25 +08:00
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
/// EmitSLEB128Bytes - Emit an assembler byte data directive to compose a
|
|
|
|
|
/// signed leb128 value.
|
|
|
|
|
void DwarfWriter::EmitSLEB128Bytes(int Value) const {
|
|
|
|
|
if (hasLEB128) {
|
|
|
|
|
O << "\t.sleb128\t"
|
|
|
|
|
<< Value;
|
|
|
|
|
} else {
|
|
|
|
|
O << Asm->Data8bitsDirective;
|
|
|
|
|
PrintSLEB128(Value);
|
|
|
|
|
}
|
2006-01-05 06:28:25 +08:00
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
/// PrintULEB128 - Print a series of hexidecimal values (separated by commas)
|
2006-01-05 06:28:25 +08:00
|
|
|
/// representing an unsigned leb128 value.
|
2006-01-18 01:31:53 +08:00
|
|
|
void DwarfWriter::PrintULEB128(unsigned Value) const {
|
2006-01-05 06:28:25 +08:00
|
|
|
do {
|
|
|
|
|
unsigned Byte = Value & 0x7f;
|
|
|
|
|
Value >>= 7;
|
|
|
|
|
if (Value) Byte |= 0x80;
|
2006-01-18 01:31:53 +08:00
|
|
|
PrintHex(Byte);
|
2006-01-05 06:28:25 +08:00
|
|
|
if (Value) O << ", ";
|
|
|
|
|
} while (Value);
|
|
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
/// SizeULEB128 - Compute the number of bytes required for an unsigned leb128
|
|
|
|
|
/// value.
|
|
|
|
|
unsigned DwarfWriter::SizeULEB128(unsigned Value) {
|
|
|
|
|
unsigned Size = 0;
|
|
|
|
|
do {
|
|
|
|
|
Value >>= 7;
|
|
|
|
|
Size += sizeof(int8_t);
|
|
|
|
|
} while (Value);
|
|
|
|
|
return Size;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
|
2006-01-05 06:28:25 +08:00
|
|
|
/// representing a signed leb128 value.
|
2006-01-18 01:31:53 +08:00
|
|
|
void DwarfWriter::PrintSLEB128(int Value) const {
|
2006-01-05 06:28:25 +08:00
|
|
|
int Sign = Value >> (8 * sizeof(Value) - 1);
|
|
|
|
|
bool IsMore;
|
2006-01-04 21:52:30 +08:00
|
|
|
|
2006-01-05 06:28:25 +08:00
|
|
|
do {
|
|
|
|
|
unsigned Byte = Value & 0x7f;
|
|
|
|
|
Value >>= 7;
|
|
|
|
|
IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
|
|
|
|
|
if (IsMore) Byte |= 0x80;
|
2006-01-18 01:31:53 +08:00
|
|
|
PrintHex(Byte);
|
2006-01-05 06:28:25 +08:00
|
|
|
if (IsMore) O << ", ";
|
|
|
|
|
} while (IsMore);
|
|
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
/// SizeSLEB128 - Compute the number of bytes required for a signed leb128
|
|
|
|
|
/// value.
|
|
|
|
|
unsigned DwarfWriter::SizeSLEB128(int Value) {
|
|
|
|
|
unsigned Size = 0;
|
|
|
|
|
int Sign = Value >> (8 * sizeof(Value) - 1);
|
|
|
|
|
bool IsMore;
|
|
|
|
|
|
|
|
|
|
do {
|
|
|
|
|
unsigned Byte = Value & 0x7f;
|
|
|
|
|
Value >>= 7;
|
|
|
|
|
IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
|
|
|
|
|
Size += sizeof(int8_t);
|
|
|
|
|
} while (IsMore);
|
|
|
|
|
return Size;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EmitByte - Emit a byte directive and value.
|
2006-01-05 06:28:25 +08:00
|
|
|
///
|
2006-01-18 01:31:53 +08:00
|
|
|
void DwarfWriter::EmitByte(int Value) const {
|
|
|
|
|
O << Asm->Data8bitsDirective;
|
|
|
|
|
PrintHex(Value);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EmitShort - Emit a short directive and value.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::EmitShort(int Value) const {
|
|
|
|
|
O << Asm->Data16bitsDirective;
|
|
|
|
|
PrintHex(Value);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EmitLong - Emit a long directive and value.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::EmitLong(int Value) const {
|
|
|
|
|
O << Asm->Data32bitsDirective;
|
|
|
|
|
PrintHex(Value);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EmitString - Emit a string with quotes and a null terminator.
|
|
|
|
|
/// Special characters are emitted properly. (Eg. '\t')
|
|
|
|
|
void DwarfWriter::EmitString(const std::string &String) const {
|
|
|
|
|
O << Asm->AsciiDirective
|
|
|
|
|
<< "\"";
|
|
|
|
|
for (unsigned i = 0, N = String.size(); i < N; i++) {
|
|
|
|
|
unsigned char C = String[i];
|
|
|
|
|
|
|
|
|
|
if (!isascii(C) || iscntrl(C)) {
|
|
|
|
|
switch(C) {
|
|
|
|
|
case '\b': O << "\\b"; break;
|
|
|
|
|
case '\f': O << "\\f"; break;
|
|
|
|
|
case '\n': O << "\\n"; break;
|
|
|
|
|
case '\r': O << "\\r"; break;
|
|
|
|
|
case '\t': O << "\\t"; break;
|
|
|
|
|
default:
|
|
|
|
|
O << '\\';
|
|
|
|
|
O << char('0' + (C >> 6));
|
|
|
|
|
O << char('0' + (C >> 3));
|
|
|
|
|
O << char('0' + (C >> 0));
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
} else if (C == '\"') {
|
|
|
|
|
O << "\\\"";
|
|
|
|
|
} else if (C == '\'') {
|
|
|
|
|
O << "\\\'";
|
|
|
|
|
} else {
|
|
|
|
|
O << C;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
O << "\\0\"";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// PrintLabelName - Print label name in form used by Dwarf writer.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::PrintLabelName(const char *Tag, unsigned Number) const {
|
2006-01-05 06:28:25 +08:00
|
|
|
O << Asm->PrivateGlobalPrefix
|
|
|
|
|
<< "debug_"
|
|
|
|
|
<< Tag
|
2006-01-18 01:31:53 +08:00
|
|
|
<< Number;
|
2006-01-05 06:28:25 +08:00
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
/// EmitLabel - Emit location label for internal use by Dwarf.
|
2006-01-05 06:28:25 +08:00
|
|
|
///
|
2006-01-18 01:31:53 +08:00
|
|
|
void DwarfWriter::EmitLabel(const char *Tag, unsigned Number) const {
|
|
|
|
|
PrintLabelName(Tag, Number);
|
2006-01-05 06:28:25 +08:00
|
|
|
O << ":\n";
|
|
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
/// EmitLabelReference - Emit a reference to a label.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::EmitLabelReference(const char *Tag, unsigned Number) const {
|
|
|
|
|
if (AddressSize == 4)
|
|
|
|
|
O << Asm->Data32bitsDirective;
|
|
|
|
|
else
|
|
|
|
|
O << Asm->Data64bitsDirective;
|
|
|
|
|
|
|
|
|
|
PrintLabelName(Tag, Number);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EmitDifference - Emit an label difference as sizeof(pointer) value. Some
|
|
|
|
|
/// assemblers do not accept absolute expressions with data directives, so there
|
|
|
|
|
/// is an option (needsSet) to use an intermediary 'set' expression.
|
|
|
|
|
void DwarfWriter::EmitDifference(const char *Tag1, unsigned Number1,
|
|
|
|
|
const char *Tag2, unsigned Number2) const {
|
|
|
|
|
if (needsSet) {
|
|
|
|
|
static unsigned SetCounter = 0;
|
|
|
|
|
O << "\t.set\t";
|
|
|
|
|
PrintLabelName("set", SetCounter);
|
|
|
|
|
O << ",";
|
|
|
|
|
PrintLabelName(Tag1, Number1);
|
|
|
|
|
O << "-";
|
|
|
|
|
PrintLabelName(Tag2, Number2);
|
|
|
|
|
O << "\n";
|
|
|
|
|
|
|
|
|
|
if (AddressSize == sizeof(int32_t))
|
|
|
|
|
O << Asm->Data32bitsDirective;
|
|
|
|
|
else
|
|
|
|
|
O << Asm->Data64bitsDirective;
|
|
|
|
|
|
|
|
|
|
PrintLabelName("set", SetCounter);
|
|
|
|
|
|
|
|
|
|
SetCounter++;
|
|
|
|
|
} else {
|
|
|
|
|
if (AddressSize == sizeof(int32_t))
|
|
|
|
|
O << Asm->Data32bitsDirective;
|
|
|
|
|
else
|
|
|
|
|
O << Asm->Data64bitsDirective;
|
|
|
|
|
|
|
|
|
|
PrintLabelName(Tag1, Number1);
|
|
|
|
|
O << "-";
|
|
|
|
|
PrintLabelName(Tag2, Number2);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// NewDIE - Construct a new structured debug information entry.
|
|
|
|
|
///
|
|
|
|
|
DIE *DwarfWriter::NewDIE(const unsigned char *AbbrevData) {
|
|
|
|
|
// Get the abbreviation ID.
|
|
|
|
|
unsigned AbbrevID = Abbreviations.insert(DIEAbbrev(AbbrevData));
|
|
|
|
|
// Allocate new new structured DIE.
|
|
|
|
|
DIE *Die = new DIE(AbbrevID);
|
|
|
|
|
// Return structured DIE.
|
|
|
|
|
return Die;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// NewCompileUnit - Create new compile unit information.
|
|
|
|
|
///
|
|
|
|
|
DIE *DwarfWriter::NewCompileUnit(const std::string &Directory,
|
|
|
|
|
const std::string &SourceName) {
|
|
|
|
|
DIE *Die = NewDIE(AbbrevTAG_compile_unit);
|
|
|
|
|
// FIXME - use the correct line set.
|
|
|
|
|
Die->AddValue(DWLabel("line", 0));
|
|
|
|
|
Die->AddValue(DWLabel("text_end", 0));
|
|
|
|
|
Die->AddValue(DWLabel("text_begin", 0));
|
|
|
|
|
// FIXME - The producer needs to be in this form, but should come from
|
|
|
|
|
// an appropriate source.
|
|
|
|
|
Die->AddValue("llvm 3.4.x (LLVM Research Group)");
|
|
|
|
|
Die->AddValue(DW_LANG_C89);
|
|
|
|
|
Die->AddValue(SourceName);
|
|
|
|
|
Die->AddValue(Directory);
|
|
|
|
|
|
|
|
|
|
return Die;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EmitInitial - Emit initial Dwarf declarations. This is necessary for cc
|
|
|
|
|
/// tools to recognize the object file contains Dwarf information.
|
2006-01-05 06:28:25 +08:00
|
|
|
///
|
|
|
|
|
void DwarfWriter::EmitInitial() const {
|
2006-01-18 01:31:53 +08:00
|
|
|
// Dwarf sections base addresses.
|
2006-01-04 21:52:30 +08:00
|
|
|
Asm->SwitchSection(DwarfAbbrevSection, 0);
|
|
|
|
|
EmitLabel("abbrev", 0);
|
|
|
|
|
Asm->SwitchSection(DwarfInfoSection, 0);
|
|
|
|
|
EmitLabel("info", 0);
|
|
|
|
|
Asm->SwitchSection(DwarfLineSection, 0);
|
|
|
|
|
EmitLabel("line", 0);
|
2006-01-18 01:31:53 +08:00
|
|
|
|
|
|
|
|
// Standard sections base addresses.
|
|
|
|
|
Asm->SwitchSection(TextSection, 0);
|
|
|
|
|
EmitLabel("text_begin", 0);
|
|
|
|
|
Asm->SwitchSection(DataSection, 0);
|
|
|
|
|
EmitLabel("data_begin", 0);
|
2006-01-04 21:52:30 +08:00
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
/// EmitDIE - Recusively Emits a debug information entry.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::EmitDIE(DIE *Die) const {
|
|
|
|
|
// Get the abbreviation for this DIE.
|
|
|
|
|
unsigned AbbrevID = Die->getAbbrevID();
|
|
|
|
|
const DIEAbbrev &Abbrev = Abbreviations[AbbrevID];
|
|
|
|
|
|
|
|
|
|
// Emit the code (index) for the abbreviation.
|
|
|
|
|
EmitULEB128Bytes(AbbrevID);
|
|
|
|
|
EOL(std::string("Abbrev [" +
|
|
|
|
|
utostr(AbbrevID) +
|
|
|
|
|
TagString(Abbrev.getTag())) +
|
|
|
|
|
" ");
|
|
|
|
|
|
|
|
|
|
const std::vector<DIEValue *> &Values = Die->getValues();
|
|
|
|
|
|
|
|
|
|
// Emit the DIE attribute values.
|
|
|
|
|
for (unsigned i = 0, N = Values.size(); i < N; i++) {
|
|
|
|
|
unsigned Attr = Abbrev.getAttribute(i);
|
|
|
|
|
unsigned Form = Abbrev.getForm(i);
|
|
|
|
|
assert(Form && "Too many attributes for DIE (check abbreviation)");
|
|
|
|
|
|
|
|
|
|
switch (Attr) {
|
|
|
|
|
case DW_AT_sibling: {
|
|
|
|
|
EmitLong(Die->SiblingOffset());
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
default: {
|
|
|
|
|
// Emit an attribute using the defined form.
|
|
|
|
|
Values[i]->EmitValue(*this, Form);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
EOL(AttributeString(Attr));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Emit the DIE children if any.
|
|
|
|
|
if (Abbrev.getChildrenFlag() == DW_CHILDREN_yes) {
|
|
|
|
|
const std::vector<DIE *> &Children = Die->getChildren();
|
|
|
|
|
|
|
|
|
|
for (unsigned j = 0, M = Children.size(); j < M; j++) {
|
|
|
|
|
// FIXME - handle sibling offsets.
|
|
|
|
|
// FIXME - handle all DIE types.
|
|
|
|
|
EmitDIE(Children[j]);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
EmitByte(0); EOL("End Of Children Mark");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// SizeAndOffsetDie - Compute the size and offset of a DIE.
|
|
|
|
|
///
|
|
|
|
|
unsigned DwarfWriter::SizeAndOffsetDie(DIE *Die, unsigned Offset) const {
|
|
|
|
|
// Get the abbreviation for this DIE.
|
|
|
|
|
unsigned AbbrevID = Die->getAbbrevID();
|
|
|
|
|
const DIEAbbrev &Abbrev = Abbreviations[AbbrevID];
|
|
|
|
|
|
|
|
|
|
// Set DIE offset
|
|
|
|
|
Die->setOffset(Offset);
|
|
|
|
|
|
|
|
|
|
// Start the size with the size of abbreviation code.
|
|
|
|
|
Offset += SizeULEB128(AbbrevID);
|
|
|
|
|
|
|
|
|
|
const std::vector<DIEValue *> &Values = Die->getValues();
|
|
|
|
|
|
|
|
|
|
// Emit the DIE attribute values.
|
|
|
|
|
for (unsigned i = 0, N = Values.size(); i < N; i++) {
|
|
|
|
|
// Size attribute value.
|
|
|
|
|
Offset += Values[i]->SizeOf(*this, Abbrev.getForm(i));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Emit the DIE children if any.
|
|
|
|
|
if (Abbrev.getChildrenFlag() == DW_CHILDREN_yes) {
|
|
|
|
|
const std::vector<DIE *> &Children = Die->getChildren();
|
|
|
|
|
|
|
|
|
|
for (unsigned j = 0, M = Children.size(); j < M; j++) {
|
|
|
|
|
// FIXME - handle sibling offsets.
|
|
|
|
|
// FIXME - handle all DIE types.
|
|
|
|
|
Offset = SizeAndOffsetDie(Children[j], Offset);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// End of children marker.
|
|
|
|
|
Offset += sizeof(int8_t);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Die->setSize(Offset - Die->getOffset());
|
|
|
|
|
return Offset;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// SizeAndOffsets - Compute the size and offset of all the DIEs.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::SizeAndOffsets() {
|
|
|
|
|
// Compute size of debug unit header
|
|
|
|
|
unsigned Offset = sizeof(int32_t) + // Length of Compilation Unit Info
|
|
|
|
|
sizeof(int16_t) + // DWARF version number
|
|
|
|
|
sizeof(int32_t) + // Offset Into Abbrev. Section
|
|
|
|
|
sizeof(int8_t); // Pointer Size (in bytes)
|
|
|
|
|
|
|
|
|
|
// Process each compile unit.
|
|
|
|
|
for (unsigned i = 0, N = CompileUnits.size(); i < N; i++) {
|
|
|
|
|
Offset = SizeAndOffsetDie(CompileUnits[i], Offset);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EmitDebugInfo - Emit the debug info section.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::EmitDebugInfo() const {
|
|
|
|
|
// Start debug info section.
|
|
|
|
|
Asm->SwitchSection(DwarfInfoSection, 0);
|
|
|
|
|
|
|
|
|
|
// Get the number of compile units.
|
|
|
|
|
unsigned N = CompileUnits.size();
|
|
|
|
|
|
|
|
|
|
// If there are any compile units.
|
|
|
|
|
if (N) {
|
|
|
|
|
// Emit the compile units header.
|
|
|
|
|
|
|
|
|
|
// Emit size of content not including length itself
|
|
|
|
|
unsigned ContentSize = CompileUnits[N - 1]->SiblingOffset();
|
|
|
|
|
EmitLong(ContentSize - sizeof(int32_t));
|
|
|
|
|
EOL("Length of Compilation Unit Info");
|
|
|
|
|
|
|
|
|
|
EmitShort(DWARF_VERSION); EOL("DWARF version number");
|
|
|
|
|
|
|
|
|
|
EmitLabelReference("abbrev", 0); EOL("Offset Into Abbrev. Section");
|
|
|
|
|
|
|
|
|
|
EmitByte(AddressSize); EOL("Address Size (in bytes)");
|
|
|
|
|
|
|
|
|
|
// Process each compile unit.
|
|
|
|
|
for (unsigned i = 0; i < N; i++) {
|
|
|
|
|
EmitDIE(CompileUnits[i]);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EmitAbbreviations - Emit the abbreviation section.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::EmitAbbreviations() const {
|
|
|
|
|
// Start the debug abbrev section.
|
|
|
|
|
Asm->SwitchSection(DwarfAbbrevSection, 0);
|
|
|
|
|
|
|
|
|
|
// For each abbrevation.
|
|
|
|
|
for (unsigned AbbrevID = 1, NAID = Abbreviations.size();
|
|
|
|
|
AbbrevID <= NAID; AbbrevID++) {
|
|
|
|
|
// Get abbreviation data
|
|
|
|
|
const DIEAbbrev &Abbrev = Abbreviations[AbbrevID];
|
|
|
|
|
|
|
|
|
|
// Emit the abbrevations code (base 1 index.)
|
|
|
|
|
EmitULEB128Bytes(AbbrevID); EOL("Abbreviation Code");
|
|
|
|
|
|
|
|
|
|
// Emit its Dwarf tag type.
|
|
|
|
|
EmitULEB128Bytes(Abbrev.getTag());
|
|
|
|
|
EOL(TagString(Abbrev.getTag()));
|
|
|
|
|
|
|
|
|
|
// Emit whether it has children DIEs.
|
|
|
|
|
EmitULEB128Bytes(Abbrev.getChildrenFlag());
|
|
|
|
|
EOL(ChildrenString(Abbrev.getChildrenFlag()));
|
|
|
|
|
|
|
|
|
|
// For each attribute description.
|
|
|
|
|
for (unsigned i = 0; ; i++) {
|
|
|
|
|
unsigned Attr = Abbrev.getAttribute(i);
|
|
|
|
|
unsigned Form = Abbrev.getForm(i);
|
|
|
|
|
|
|
|
|
|
// Attributes are null terminated.
|
|
|
|
|
if (!Attr) break;
|
|
|
|
|
|
|
|
|
|
// Emit attribute type.
|
|
|
|
|
EmitULEB128Bytes(Attr);
|
|
|
|
|
EOL(AttributeString(Attr));
|
|
|
|
|
|
|
|
|
|
// Emit form type.
|
|
|
|
|
EmitULEB128Bytes(Form);
|
|
|
|
|
EOL(FormEncodingString(Form));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Mark end of abbreviation.
|
|
|
|
|
EmitULEB128Bytes(0); EOL("EOM(1)");
|
|
|
|
|
EmitULEB128Bytes(0); EOL("EOM(2)");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EmitDebugLines - Emit source line information.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::EmitDebugLines() const {
|
|
|
|
|
// Minimum line delta, thus ranging from -10..(255-10).
|
|
|
|
|
const int MinLineDelta = -(DW_LNS_fixed_advance_pc + 1);
|
|
|
|
|
// Maximum line delta, thus ranging from -10..(255-10).
|
|
|
|
|
const int MaxLineDelta = 255 + MinLineDelta;
|
|
|
|
|
|
|
|
|
|
// Start the dwarf line section.
|
|
|
|
|
Asm->SwitchSection(DwarfLineSection, 0);
|
|
|
|
|
|
|
|
|
|
// Construct the section header.
|
|
|
|
|
|
|
|
|
|
EmitDifference("line_end", 0, "line_begin", 0);
|
|
|
|
|
EOL("Length of Source Line Info");
|
|
|
|
|
EmitLabel("line_begin", 0);
|
|
|
|
|
|
|
|
|
|
EmitShort(DWARF_VERSION); EOL("DWARF version number");
|
|
|
|
|
|
|
|
|
|
EmitDifference("line_prolog_end", 0, "line_prolog_begin", 0);
|
|
|
|
|
EOL("Prolog Length");
|
|
|
|
|
EmitLabel("line_prolog_begin", 0);
|
|
|
|
|
|
|
|
|
|
EmitByte(1); EOL("Minimum Instruction Length");
|
|
|
|
|
|
|
|
|
|
EmitByte(1); EOL("Default is_stmt_start flag");
|
|
|
|
|
|
|
|
|
|
EmitByte(MinLineDelta); EOL("Line Base Value (Special Opcodes)");
|
|
|
|
|
|
|
|
|
|
EmitByte(MaxLineDelta); EOL("Line Range Value (Special Opcodes)");
|
|
|
|
|
|
|
|
|
|
EmitByte(-MinLineDelta); EOL("Special Opcode Base");
|
|
|
|
|
|
|
|
|
|
// Line number standard opcode encodings argument count
|
|
|
|
|
EmitByte(0); EOL("DW_LNS_copy arg count");
|
|
|
|
|
EmitByte(1); EOL("DW_LNS_advance_pc arg count");
|
|
|
|
|
EmitByte(1); EOL("DW_LNS_advance_line arg count");
|
|
|
|
|
EmitByte(1); EOL("DW_LNS_set_file arg count");
|
|
|
|
|
EmitByte(1); EOL("DW_LNS_set_column arg count");
|
|
|
|
|
EmitByte(0); EOL("DW_LNS_negate_stmt arg count");
|
|
|
|
|
EmitByte(0); EOL("DW_LNS_set_basic_block arg count");
|
|
|
|
|
EmitByte(0); EOL("DW_LNS_const_add_pc arg count");
|
|
|
|
|
EmitByte(1); EOL("DW_LNS_fixed_advance_pc arg count");
|
|
|
|
|
|
|
|
|
|
const UniqueVector<std::string> &Directories = DebugInfo->getDirectories();
|
|
|
|
|
const UniqueVector<SourceFileInfo> &SourceFiles = DebugInfo->getSourceFiles();
|
|
|
|
|
|
|
|
|
|
// Emit directories.
|
|
|
|
|
for (unsigned DirectoryID = 1, NDID = Directories.size();
|
|
|
|
|
DirectoryID <= NDID; DirectoryID++) {
|
|
|
|
|
EmitString(Directories[DirectoryID]); EOL("Directory");
|
|
|
|
|
}
|
|
|
|
|
EmitByte(0); EOL("End of directories");
|
|
|
|
|
|
|
|
|
|
// Emit files.
|
|
|
|
|
for (unsigned SourceID = 1, NSID = SourceFiles.size();
|
|
|
|
|
SourceID <= NSID; SourceID++) {
|
|
|
|
|
const SourceFileInfo &SourceFile = SourceFiles[SourceID];
|
|
|
|
|
EmitString(SourceFile.getName()); EOL("Source");
|
|
|
|
|
EmitULEB128Bytes(SourceFile.getDirectoryID()); EOL("Directory #");
|
|
|
|
|
EmitULEB128Bytes(0); EOL("Mod date");
|
|
|
|
|
EmitULEB128Bytes(0); EOL("File size");
|
|
|
|
|
}
|
|
|
|
|
EmitByte(0); EOL("End of files");
|
|
|
|
|
|
|
|
|
|
EmitLabel("line_prolog_end", 0);
|
|
|
|
|
|
|
|
|
|
// Emit line information
|
|
|
|
|
const std::vector<SourceLineInfo *> &LineInfos = DebugInfo->getSourceLines();
|
|
|
|
|
|
|
|
|
|
// Dwarf assumes we start with first line of first source file.
|
|
|
|
|
unsigned Source = 1;
|
|
|
|
|
unsigned Line = 1;
|
|
|
|
|
|
|
|
|
|
// Construct rows of the address, source, line, column matrix.
|
|
|
|
|
for (unsigned i = 0, N = LineInfos.size(); i < N; i++) {
|
|
|
|
|
SourceLineInfo *LineInfo = LineInfos[i];
|
|
|
|
|
|
|
|
|
|
// Define the line address.
|
|
|
|
|
EmitByte(0); EOL("Extended Op");
|
|
|
|
|
EmitByte(4 + 1); EOL("Op size");
|
|
|
|
|
EmitByte(DW_LNE_set_address); EOL("DW_LNE_set_address");
|
|
|
|
|
EmitLabelReference("loc", i + 1); EOL("Location label");
|
|
|
|
|
|
|
|
|
|
// If change of source, then switch to the new source.
|
|
|
|
|
if (Source != LineInfo->getSourceID()) {
|
|
|
|
|
Source = LineInfo->getSourceID();
|
|
|
|
|
EmitByte(DW_LNS_set_file); EOL("DW_LNS_set_file");
|
|
|
|
|
EmitULEB128Bytes(0); EOL("New Source");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// If change of line.
|
|
|
|
|
if (Line != LineInfo->getLine()) {
|
|
|
|
|
// Determine offset.
|
|
|
|
|
int Offset = LineInfo->getLine() - Line;
|
|
|
|
|
int Delta = Offset - MinLineDelta;
|
|
|
|
|
|
|
|
|
|
// Update line.
|
|
|
|
|
Line = LineInfo->getLine();
|
|
|
|
|
|
|
|
|
|
// If delta is small enough and in range...
|
|
|
|
|
if (Delta >= 0 && Delta < (MaxLineDelta - 1)) {
|
|
|
|
|
// ... then use fast opcode.
|
|
|
|
|
EmitByte(Delta - MinLineDelta); EOL("Line Delta");
|
|
|
|
|
} else {
|
|
|
|
|
// ... otherwise use long hand.
|
|
|
|
|
EmitByte(DW_LNS_advance_line); EOL("DW_LNS_advance_line");
|
|
|
|
|
EmitSLEB128Bytes(Offset); EOL("Line Offset");
|
|
|
|
|
EmitByte(DW_LNS_copy); EOL("DW_LNS_copy");
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
// Copy the previous row (different address or source)
|
|
|
|
|
EmitByte(DW_LNS_copy); EOL("DW_LNS_copy");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Mark end of matrix.
|
|
|
|
|
EmitByte(0); EOL("DW_LNE_end_sequence");
|
|
|
|
|
EmitULEB128Bytes(1); O << "\n";
|
|
|
|
|
EmitByte(1); O << "\n";
|
|
|
|
|
|
|
|
|
|
EmitLabel("line_end", 0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// ShouldEmitDwarf - Determine if Dwarf declarations should be made.
|
2006-01-05 06:28:25 +08:00
|
|
|
///
|
|
|
|
|
bool DwarfWriter::ShouldEmitDwarf() {
|
|
|
|
|
// Check if debug info is present.
|
|
|
|
|
if (!DebugInfo || !DebugInfo->hasInfo()) return false;
|
|
|
|
|
|
|
|
|
|
// Make sure initial declarations are made.
|
|
|
|
|
if (!didInitial) {
|
|
|
|
|
EmitInitial();
|
|
|
|
|
didInitial = true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Okay to emit.
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
// Main enties.
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
DwarfWriter::DwarfWriter(std::ostream &o, AsmPrinter *ap)
|
|
|
|
|
: O(o)
|
|
|
|
|
, Asm(ap)
|
|
|
|
|
, DebugInfo(NULL)
|
|
|
|
|
, didInitial(false)
|
|
|
|
|
, CompileUnits()
|
|
|
|
|
, Abbreviations()
|
|
|
|
|
, AddressSize(sizeof(int32_t))
|
|
|
|
|
, hasLEB128(false)
|
|
|
|
|
, hasDotLoc(false)
|
|
|
|
|
, hasDotFile(false)
|
|
|
|
|
, needsSet(false)
|
|
|
|
|
, DwarfAbbrevSection(".debug_abbrev")
|
|
|
|
|
, DwarfInfoSection(".debug_info")
|
|
|
|
|
, DwarfLineSection(".debug_line")
|
|
|
|
|
, TextSection(".text")
|
|
|
|
|
, DataSection(".data")
|
|
|
|
|
{}
|
|
|
|
|
DwarfWriter::~DwarfWriter() {
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// BeginModule - Emit all Dwarf sections that should come prior to the content.
|
2006-01-05 06:28:25 +08:00
|
|
|
///
|
|
|
|
|
void DwarfWriter::BeginModule() {
|
|
|
|
|
if (!ShouldEmitDwarf()) return;
|
2006-01-18 01:31:53 +08:00
|
|
|
EOL("Dwarf Begin Module");
|
2006-01-05 06:28:25 +08:00
|
|
|
}
|
|
|
|
|
|
2006-01-18 01:31:53 +08:00
|
|
|
/// EndModule - Emit all Dwarf sections that should come after the content.
|
2006-01-04 21:52:30 +08:00
|
|
|
///
|
|
|
|
|
void DwarfWriter::EndModule() {
|
2006-01-05 06:28:25 +08:00
|
|
|
if (!ShouldEmitDwarf()) return;
|
2006-01-18 01:31:53 +08:00
|
|
|
EOL("Dwarf End Module");
|
|
|
|
|
|
|
|
|
|
// Standard sections final addresses.
|
|
|
|
|
EmitLabel("text_end", 0);
|
|
|
|
|
EmitLabel("data_end", 0);
|
|
|
|
|
|
|
|
|
|
// Get directory and source information.
|
|
|
|
|
const UniqueVector<std::string> &Directories = DebugInfo->getDirectories();
|
|
|
|
|
const UniqueVector<SourceFileInfo> &SourceFiles = DebugInfo->getSourceFiles();
|
|
|
|
|
|
|
|
|
|
// Construct compile unit DIEs for each source.
|
|
|
|
|
for (unsigned SourceID = 1, NSID = SourceFiles.size();
|
|
|
|
|
SourceID <= NSID; SourceID++) {
|
|
|
|
|
const SourceFileInfo &SourceFile = SourceFiles[SourceID];
|
|
|
|
|
const std::string &Directory = Directories[SourceFile.getDirectoryID()];
|
|
|
|
|
const std::string &SourceName = SourceFile.getName();
|
|
|
|
|
DIE *CompileUnit = NewCompileUnit(Directory, SourceName);
|
|
|
|
|
CompileUnits.push_back(CompileUnit);
|
2006-01-04 21:52:30 +08:00
|
|
|
}
|
2006-01-18 01:31:53 +08:00
|
|
|
|
|
|
|
|
// Compute DIE offsets and sizes.
|
|
|
|
|
SizeAndOffsets();
|
|
|
|
|
|
|
|
|
|
// Emit all the DIEs into a debug info section
|
|
|
|
|
EmitDebugInfo();
|
|
|
|
|
|
|
|
|
|
// Corresponding abbreviations into a abbrev section.
|
|
|
|
|
EmitAbbreviations();
|
|
|
|
|
|
|
|
|
|
// Emit source line correspondence into a debug line section.
|
|
|
|
|
EmitDebugLines();
|
2006-01-04 21:52:30 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// BeginFunction - Emit pre-function debug information.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::BeginFunction() {
|
2006-01-05 06:28:25 +08:00
|
|
|
if (!ShouldEmitDwarf()) return;
|
2006-01-18 01:31:53 +08:00
|
|
|
EOL("Dwarf Begin Function");
|
2006-01-04 21:52:30 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// EndFunction - Emit post-function debug information.
|
|
|
|
|
///
|
|
|
|
|
void DwarfWriter::EndFunction() {
|
2006-01-05 06:28:25 +08:00
|
|
|
if (!ShouldEmitDwarf()) return;
|
2006-01-18 01:31:53 +08:00
|
|
|
EOL("Dwarf End Function");
|
2006-01-04 21:52:30 +08:00
|
|
|
}
|
