#include "llvm/Type.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineDebugInfo.h"
+#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Mangler.h"
+#include "llvm/Target/MRegisterInfo.h"
#include "llvm/Target/TargetMachine.h"
#include <iostream>
using namespace llvm;
+using namespace llvm::dwarf;
static cl::opt<bool>
DwarfVerbose("dwarf-verbose", cl::Hidden,
cl::desc("Add comments to Dwarf directives."));
+namespace llvm {
+
//===----------------------------------------------------------------------===//
+// Forward declarations.
+//
+class DIE;
-/// TagString - Return the string for the specified tag.
-///
-static const char *TagString(unsigned Tag) {
- switch(Tag) {
- case DW_TAG_array_type: return "TAG_array_type";
- case DW_TAG_class_type: return "TAG_class_type";
- case DW_TAG_entry_point: return "TAG_entry_point";
- case DW_TAG_enumeration_type: return "TAG_enumeration_type";
- case DW_TAG_formal_parameter: return "TAG_formal_parameter";
- case DW_TAG_imported_declaration: return "TAG_imported_declaration";
- case DW_TAG_label: return "TAG_label";
- case DW_TAG_lexical_block: return "TAG_lexical_block";
- case DW_TAG_member: return "TAG_member";
- case DW_TAG_pointer_type: return "TAG_pointer_type";
- case DW_TAG_reference_type: return "TAG_reference_type";
- case DW_TAG_compile_unit: return "TAG_compile_unit";
- case DW_TAG_string_type: return "TAG_string_type";
- case DW_TAG_structure_type: return "TAG_structure_type";
- case DW_TAG_subroutine_type: return "TAG_subroutine_type";
- case DW_TAG_typedef: return "TAG_typedef";
- case DW_TAG_union_type: return "TAG_union_type";
- case DW_TAG_unspecified_parameters: return "TAG_unspecified_parameters";
- case DW_TAG_variant: return "TAG_variant";
- case DW_TAG_common_block: return "TAG_common_block";
- case DW_TAG_common_inclusion: return "TAG_common_inclusion";
- case DW_TAG_inheritance: return "TAG_inheritance";
- case DW_TAG_inlined_subroutine: return "TAG_inlined_subroutine";
- case DW_TAG_module: return "TAG_module";
- case DW_TAG_ptr_to_member_type: return "TAG_ptr_to_member_type";
- case DW_TAG_set_type: return "TAG_set_type";
- case DW_TAG_subrange_type: return "TAG_subrange_type";
- case DW_TAG_with_stmt: return "TAG_with_stmt";
- case DW_TAG_access_declaration: return "TAG_access_declaration";
- case DW_TAG_base_type: return "TAG_base_type";
- case DW_TAG_catch_block: return "TAG_catch_block";
- case DW_TAG_const_type: return "TAG_const_type";
- case DW_TAG_constant: return "TAG_constant";
- case DW_TAG_enumerator: return "TAG_enumerator";
- case DW_TAG_file_type: return "TAG_file_type";
- case DW_TAG_friend: return "TAG_friend";
- case DW_TAG_namelist: return "TAG_namelist";
- case DW_TAG_namelist_item: return "TAG_namelist_item";
- case DW_TAG_packed_type: return "TAG_packed_type";
- case DW_TAG_subprogram: return "TAG_subprogram";
- case DW_TAG_template_type_parameter: return "TAG_template_type_parameter";
- case DW_TAG_template_value_parameter: return "TAG_template_value_parameter";
- case DW_TAG_thrown_type: return "TAG_thrown_type";
- case DW_TAG_try_block: return "TAG_try_block";
- case DW_TAG_variant_part: return "TAG_variant_part";
- case DW_TAG_variable: return "TAG_variable";
- case DW_TAG_volatile_type: return "TAG_volatile_type";
- case DW_TAG_dwarf_procedure: return "TAG_dwarf_procedure";
- case DW_TAG_restrict_type: return "TAG_restrict_type";
- case DW_TAG_interface_type: return "TAG_interface_type";
- case DW_TAG_namespace: return "TAG_namespace";
- case DW_TAG_imported_module: return "TAG_imported_module";
- case DW_TAG_unspecified_type: return "TAG_unspecified_type";
- case DW_TAG_partial_unit: return "TAG_partial_unit";
- case DW_TAG_imported_unit: return "TAG_imported_unit";
- case DW_TAG_condition: return "TAG_condition";
- case DW_TAG_shared_type: return "TAG_shared_type";
- case DW_TAG_lo_user: return "TAG_lo_user";
- case DW_TAG_hi_user: return "TAG_hi_user";
+//===----------------------------------------------------------------------===//
+// CompileUnit - This dwarf writer support class manages information associate
+// with a source file.
+class CompileUnit {
+private:
+ CompileUnitDesc *Desc; // Compile unit debug descriptor.
+ unsigned ID; // File ID for source.
+ DIE *Die; // Compile unit debug information entry.
+ std::map<std::string, DIE *> Globals; // A map of globally visible named
+ // entities for this unit.
+ std::map<DebugInfoDesc *, DIE *> DescToDieMap;
+ // Tracks the mapping of unit level
+ // debug informaton descriptors to debug
+ // information entries.
+
+public:
+ CompileUnit(CompileUnitDesc *CUD, unsigned I, DIE *D)
+ : Desc(CUD)
+ , ID(I)
+ , Die(D)
+ , Globals()
+ , DescToDieMap()
+ {}
+
+ ~CompileUnit();
+
+ // Accessors.
+ CompileUnitDesc *getDesc() const { return Desc; }
+ unsigned getID() const { return ID; }
+ DIE* getDie() const { return Die; }
+ std::map<std::string, DIE *> &getGlobals() { return Globals; }
+
+ /// hasContent - Return true if this compile unit has something to write out.
+ ///
+ bool hasContent() const;
+
+ /// AddGlobal - Add a new global entity to the compile unit.
+ ///
+ void AddGlobal(const std::string &Name, DIE *Die);
+
+ /// getDieMapSlotFor - Returns the debug information entry map slot for the
+ /// specified debug descriptor.
+ DIE *&getDieMapSlotFor(DebugInfoDesc *DD) {
+ return DescToDieMap[DD];
}
- assert(0 && "Unknown Dwarf Tag");
- return "";
-}
+};
-/// ChildrenString - Return the string for the specified children flag.
-///
-static const char *ChildrenString(unsigned Children) {
- switch(Children) {
- case DW_CHILDREN_no: return "CHILDREN_no";
- case DW_CHILDREN_yes: return "CHILDREN_yes";
- }
- assert(0 && "Unknown Dwarf ChildrenFlag");
- return "";
-}
-
-/// AttributeString - Return the string for the specified attribute.
-///
-static const char *AttributeString(unsigned Attribute) {
- switch(Attribute) {
- case DW_AT_sibling: return "AT_sibling";
- case DW_AT_location: return "AT_location";
- case DW_AT_name: return "AT_name";
- case DW_AT_ordering: return "AT_ordering";
- case DW_AT_byte_size: return "AT_byte_size";
- case DW_AT_bit_offset: return "AT_bit_offset";
- case DW_AT_bit_size: return "AT_bit_size";
- case DW_AT_stmt_list: return "AT_stmt_list";
- case DW_AT_low_pc: return "AT_low_pc";
- case DW_AT_high_pc: return "AT_high_pc";
- case DW_AT_language: return "AT_language";
- case DW_AT_discr: return "AT_discr";
- case DW_AT_discr_value: return "AT_discr_value";
- case DW_AT_visibility: return "AT_visibility";
- case DW_AT_import: return "AT_import";
- case DW_AT_string_length: return "AT_string_length";
- case DW_AT_common_reference: return "AT_common_reference";
- case DW_AT_comp_dir: return "AT_comp_dir";
- case DW_AT_const_value: return "AT_const_value";
- case DW_AT_containing_type: return "AT_containing_type";
- case DW_AT_default_value: return "AT_default_value";
- case DW_AT_inline: return "AT_inline";
- case DW_AT_is_optional: return "AT_is_optional";
- case DW_AT_lower_bound: return "AT_lower_bound";
- case DW_AT_producer: return "AT_producer";
- case DW_AT_prototyped: return "AT_prototyped";
- case DW_AT_return_addr: return "AT_return_addr";
- case DW_AT_start_scope: return "AT_start_scope";
- case DW_AT_bit_stride: return "AT_bit_stride";
- case DW_AT_upper_bound: return "AT_upper_bound";
- case DW_AT_abstract_origin: return "AT_abstract_origin";
- case DW_AT_accessibility: return "AT_accessibility";
- case DW_AT_address_class: return "AT_address_class";
- case DW_AT_artificial: return "AT_artificial";
- case DW_AT_base_types: return "AT_base_types";
- case DW_AT_calling_convention: return "AT_calling_convention";
- case DW_AT_count: return "AT_count";
- case DW_AT_data_member_location: return "AT_data_member_location";
- case DW_AT_decl_column: return "AT_decl_column";
- case DW_AT_decl_file: return "AT_decl_file";
- case DW_AT_decl_line: return "AT_decl_line";
- case DW_AT_declaration: return "AT_declaration";
- case DW_AT_discr_list: return "AT_discr_list";
- case DW_AT_encoding: return "AT_encoding";
- case DW_AT_external: return "AT_external";
- case DW_AT_frame_base: return "AT_frame_base";
- case DW_AT_friend: return "AT_friend";
- case DW_AT_identifier_case: return "AT_identifier_case";
- case DW_AT_macro_info: return "AT_macro_info";
- case DW_AT_namelist_item: return "AT_namelist_item";
- case DW_AT_priority: return "AT_priority";
- case DW_AT_segment: return "AT_segment";
- case DW_AT_specification: return "AT_specification";
- case DW_AT_static_link: return "AT_static_link";
- case DW_AT_type: return "AT_type";
- case DW_AT_use_location: return "AT_use_location";
- case DW_AT_variable_parameter: return "AT_variable_parameter";
- case DW_AT_virtuality: return "AT_virtuality";
- case DW_AT_vtable_elem_location: return "AT_vtable_elem_location";
- case DW_AT_allocated: return "AT_allocated";
- case DW_AT_associated: return "AT_associated";
- case DW_AT_data_location: return "AT_data_location";
- case DW_AT_byte_stride: return "AT_byte_stride";
- case DW_AT_entry_pc: return "AT_entry_pc";
- case DW_AT_use_UTF8: return "AT_use_UTF8";
- case DW_AT_extension: return "AT_extension";
- case DW_AT_ranges: return "AT_ranges";
- case DW_AT_trampoline: return "AT_trampoline";
- case DW_AT_call_column: return "AT_call_column";
- case DW_AT_call_file: return "AT_call_file";
- case DW_AT_call_line: return "AT_call_line";
- case DW_AT_description: return "AT_description";
- case DW_AT_binary_scale: return "AT_binary_scale";
- case DW_AT_decimal_scale: return "AT_decimal_scale";
- case DW_AT_small: return "AT_small";
- case DW_AT_decimal_sign: return "AT_decimal_sign";
- 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";
+//===----------------------------------------------------------------------===//
+// DIEAbbrevData - Dwarf abbreviation data, describes the one attribute of a
+// Dwarf abbreviation.
+class DIEAbbrevData {
+private:
+ unsigned Attribute; // Dwarf attribute code.
+ unsigned Form; // Dwarf form code.
+
+public:
+ DIEAbbrevData(unsigned A, unsigned F)
+ : Attribute(A)
+ , Form(F)
+ {}
+
+ // Accessors.
+ unsigned getAttribute() const { return Attribute; }
+ unsigned getForm() const { return Form; }
+
+ /// operator== - Used by DIEAbbrev to locate entry.
+ ///
+ bool operator==(const DIEAbbrevData &DAD) const {
+ return Attribute == DAD.Attribute && Form == DAD.Form;
}
- 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";
+
+ /// operator!= - Used by DIEAbbrev to locate entry.
+ ///
+ bool operator!=(const DIEAbbrevData &DAD) const {
+ return Attribute != DAD.Attribute || Form != DAD.Form;
}
- 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";
+
+ /// operator< - Used by DIEAbbrev to locate entry.
+ ///
+ bool operator<(const DIEAbbrevData &DAD) const {
+ return Attribute < DAD.Attribute ||
+ (Attribute == DAD.Attribute && Form < DAD.Form);
}
- 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";
+};
+
+//===----------------------------------------------------------------------===//
+// DIEAbbrev - Dwarf abbreviation, describes the organization of a debug
+// information object.
+class DIEAbbrev {
+private:
+ unsigned Tag; // Dwarf tag code.
+ unsigned ChildrenFlag; // Dwarf children flag.
+ std::vector<DIEAbbrevData> Data; // Raw data bytes for abbreviation.
+
+public:
+
+ DIEAbbrev(unsigned T, unsigned C)
+ : Tag(T)
+ , ChildrenFlag(C)
+ , Data()
+ {}
+ ~DIEAbbrev() {}
+
+ // Accessors.
+ unsigned getTag() const { return Tag; }
+ unsigned getChildrenFlag() const { return ChildrenFlag; }
+ const std::vector<DIEAbbrevData> &getData() const { return Data; }
+ void setChildrenFlag(unsigned CF) { ChildrenFlag = CF; }
+
+ /// operator== - Used by UniqueVector to locate entry.
+ ///
+ bool operator==(const DIEAbbrev &DA) const;
+
+ /// operator< - Used by UniqueVector to locate entry.
+ ///
+ bool operator<(const DIEAbbrev &DA) const;
+
+ /// AddAttribute - Adds another set of attribute information to the
+ /// abbreviation.
+ void AddAttribute(unsigned Attribute, unsigned Form) {
+ Data.push_back(DIEAbbrevData(Attribute, Form));
}
- 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";
+
+ /// AddFirstAttribute - Adds a set of attribute information to the front
+ /// of the abbreviation.
+ void AddFirstAttribute(unsigned Attribute, unsigned Form) {
+ Data.insert(Data.begin(), DIEAbbrevData(Attribute, Form));
}
- assert(0 && "Unknown Dwarf Decimal Sign Attribute");
- return "";
-}
+
+ /// Emit - Print the abbreviation using the specified Dwarf writer.
+ ///
+ void Emit(const DwarfWriter &DW) const;
+
+#ifndef NDEBUG
+ void print(std::ostream &O);
+ void dump();
+#endif
+};
-/// 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 "";
-}
+//===----------------------------------------------------------------------===//
+// DIEValue - A debug information entry value.
+//
+class DIEValue {
+public:
+ enum {
+ isInteger,
+ isString,
+ isLabel,
+ isAsIsLabel,
+ isDelta,
+ isEntry,
+ isBlock
+ };
+
+ unsigned Type; // Type of the value
+
+ DIEValue(unsigned T) : Type(T) {}
+ virtual ~DIEValue() {}
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *) { return true; }
+
+ /// EmitValue - Emit value via the Dwarf writer.
+ ///
+ virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const = 0;
+
+ /// SizeOf - Return the size of a value in bytes.
+ ///
+ virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const = 0;
+};
-/// 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 "";
-}
+//===----------------------------------------------------------------------===//
+// DWInteger - An integer value DIE.
+//
+class DIEInteger : public DIEValue {
+private:
+ uint64_t Integer;
+
+public:
+ DIEInteger(uint64_t I) : DIEValue(isInteger), Integer(I) {}
-/// 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 "";
-}
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEInteger *) { return true; }
+ static bool classof(const DIEValue *I) { return I->Type == isInteger; }
+
+ /// BestForm - Choose the best form for integer.
+ ///
+ unsigned BestForm(bool IsSigned);
-/// 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 "";
-}
+ /// EmitValue - Emit integer of appropriate size.
+ ///
+ virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+
+ /// SizeOf - Determine size of integer value in bytes.
+ ///
+ virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+};
-/// 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 "";
-}
+//===----------------------------------------------------------------------===//
+// DIEString - A string value DIE.
+//
+struct DIEString : public DIEValue {
+ const std::string String;
+
+ DIEString(const std::string &S) : DIEValue(isString), String(S) {}
-/// 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 "";
-}
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEString *) { return true; }
+ static bool classof(const DIEValue *S) { return S->Type == isString; }
+
+ /// EmitValue - Emit string value.
+ ///
+ virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+
+ /// SizeOf - Determine size of string value in bytes.
+ ///
+ virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+};
-/// 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 "";
-}
+//===----------------------------------------------------------------------===//
+// DIEDwarfLabel - A Dwarf internal label expression DIE.
+//
+struct DIEDwarfLabel : public DIEValue {
+ const DWLabel Label;
+
+ DIEDwarfLabel(const DWLabel &L) : DIEValue(isLabel), Label(L) {}
-/// 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 "";
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEDwarfLabel *) { return true; }
+ static bool classof(const DIEValue *L) { return L->Type == isLabel; }
+
+ /// EmitValue - Emit label value.
+ ///
+ virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+
+ /// SizeOf - Determine size of label value in bytes.
+ ///
+ virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+};
+
+
+//===----------------------------------------------------------------------===//
+// DIEObjectLabel - A label to an object in code or data.
+//
+struct DIEObjectLabel : public DIEValue {
+ const std::string Label;
+
+ DIEObjectLabel(const std::string &L) : DIEValue(isAsIsLabel), Label(L) {}
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEObjectLabel *) { return true; }
+ static bool classof(const DIEValue *L) { return L->Type == isAsIsLabel; }
+
+ /// EmitValue - Emit label value.
+ ///
+ virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+
+ /// SizeOf - Determine size of label value in bytes.
+ ///
+ virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+};
+
+//===----------------------------------------------------------------------===//
+// DIEDelta - A simple label difference DIE.
+//
+struct DIEDelta : public DIEValue {
+ const DWLabel LabelHi;
+ const DWLabel LabelLo;
+
+ DIEDelta(const DWLabel &Hi, const DWLabel &Lo)
+ : DIEValue(isDelta), LabelHi(Hi), LabelLo(Lo) {}
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEDelta *) { return true; }
+ static bool classof(const DIEValue *D) { return D->Type == isDelta; }
+
+ /// EmitValue - Emit delta value.
+ ///
+ virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+
+ /// SizeOf - Determine size of delta value in bytes.
+ ///
+ virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+};
+
+//===----------------------------------------------------------------------===//
+// DIEntry - A pointer to a debug information entry.
+//
+struct DIEntry : public DIEValue {
+ DIE *Entry;
+
+ DIEntry(DIE *E) : DIEValue(isEntry), Entry(E) {}
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEntry *) { return true; }
+ static bool classof(const DIEValue *E) { return E->Type == isEntry; }
+
+ /// EmitValue - Emit debug information entry offset.
+ ///
+ virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+
+ /// SizeOf - Determine size of debug information entry in bytes.
+ ///
+ virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+};
+
+//===----------------------------------------------------------------------===//
+// DIEBlock - A block of values. Primarily used for location expressions.
+//
+struct DIEBlock : public DIEValue {
+ unsigned Size; // Size in bytes excluding size header.
+ std::vector<unsigned> Forms; // Data forms.
+ std::vector<DIEValue *> Values; // Block values.
+
+ DIEBlock()
+ : DIEValue(isBlock)
+ , Size(0)
+ , Forms()
+ , Values()
+ {}
+ ~DIEBlock();
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEBlock *) { return true; }
+ static bool classof(const DIEValue *E) { return E->Type == isBlock; }
+
+ /// ComputeSize - calculate the size of the block.
+ ///
+ unsigned ComputeSize(DwarfWriter &DW);
+
+ /// BestForm - Choose the best form for data.
+ ///
+ unsigned BestForm();
+
+ /// EmitValue - Emit block data.
+ ///
+ virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+
+ /// SizeOf - Determine size of block data in bytes.
+ ///
+ virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+
+ /// AddUInt - Add an unsigned integer value.
+ ///
+ void AddUInt(unsigned Form, uint64_t Integer);
+
+ /// AddSInt - Add an signed integer value.
+ ///
+ void AddSInt(unsigned Form, int64_t Integer);
+
+ /// AddString - Add a std::string value.
+ ///
+ void AddString(unsigned Form, const std::string &String);
+
+ /// AddLabel - Add a Dwarf label value.
+ ///
+ void AddLabel(unsigned Form, const DWLabel &Label);
+
+ /// AddObjectLabel - Add a non-Dwarf label value.
+ ///
+ void AddObjectLabel(unsigned Form, const std::string &Label);
+
+ /// AddDelta - Add a label delta value.
+ ///
+ void AddDelta(unsigned Form, const DWLabel &Hi, const DWLabel &Lo);
+
+ /// AddDIEntry - Add a DIE value.
+ ///
+ void AddDIEntry(unsigned Form, DIE *Entry);
+
+};
+
+//===----------------------------------------------------------------------===//
+// DIE - A structured debug information entry. Has an abbreviation which
+// describes it's organization.
+class DIE {
+private:
+ DIEAbbrev *Abbrev; // Temporary buffer for abbreviation.
+ unsigned AbbrevID; // Decribing abbreviation ID.
+ unsigned Offset; // Offset in debug info section.
+ unsigned Size; // Size of instance + children.
+ std::vector<DIE *> Children; // Children DIEs.
+ std::vector<DIEValue *> Values; // Attributes values.
+
+public:
+ DIE(unsigned Tag);
+ ~DIE();
+
+ // Accessors.
+ unsigned getAbbrevID() const { return AbbrevID; }
+ unsigned getOffset() const { return Offset; }
+ unsigned getSize() const { return Size; }
+ const std::vector<DIE *> &getChildren() const { return Children; }
+ const std::vector<DIEValue *> &getValues() const { return Values; }
+ void setOffset(unsigned O) { Offset = O; }
+ void setSize(unsigned S) { Size = S; }
+
+ /// SiblingOffset - Return the offset of the debug information entry's
+ /// sibling.
+ unsigned SiblingOffset() const { return Offset + Size; }
+
+ /// AddSiblingOffset - Add a sibling offset field to the front of the DIE.
+ ///
+ void AddSiblingOffset();
+
+ /// AddUInt - Add an unsigned integer attribute data and value.
+ ///
+ void AddUInt(unsigned Attribute, unsigned Form, uint64_t Integer);
+
+ /// AddSInt - Add an signed integer attribute data and value.
+ ///
+ void AddSInt(unsigned Attribute, unsigned Form, int64_t Integer);
+
+ /// AddString - Add a std::string attribute data and value.
+ ///
+ void AddString(unsigned Attribute, unsigned Form,
+ const std::string &String);
+
+ /// AddLabel - Add a Dwarf label attribute data and value.
+ ///
+ void AddLabel(unsigned Attribute, unsigned Form, const DWLabel &Label);
+
+ /// AddObjectLabel - Add a non-Dwarf label attribute data and value.
+ ///
+ void AddObjectLabel(unsigned Attribute, unsigned Form,
+ const std::string &Label);
+
+ /// AddDelta - Add a label delta attribute data and value.
+ ///
+ void AddDelta(unsigned Attribute, unsigned Form,
+ const DWLabel &Hi, const DWLabel &Lo);
+
+ /// AddDIEntry - Add a DIE attribute data and value.
+ ///
+ void AddDIEntry(unsigned Attribute, unsigned Form, DIE *Entry);
+
+ /// AddBlock - Add block data.
+ ///
+ void AddBlock(unsigned Attribute, unsigned Form, DIEBlock *Block);
+
+ /// Complete - Indicate that all attributes have been added and
+ /// ready to get an abbreviation ID.
+ ///
+ void Complete(DwarfWriter &DW);
+
+ /// AddChild - Add a child to the DIE.
+ void AddChild(DIE *Child);
+};
+
+} // End of namespace llvm
+
+//===----------------------------------------------------------------------===//
+
+CompileUnit::~CompileUnit() {
+ delete Die;
}
-/// 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 "";
+/// hasContent - Return true if this compile unit has something to write out.
+///
+bool CompileUnit::hasContent() const {
+ return !Die->getChildren().empty();
}
-/// MacinfoString - Return the string for the specified macinfo type encodings.
+/// AddGlobal - Add a new global entity to the compile unit.
///
-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 "";
+void CompileUnit::AddGlobal(const std::string &Name, DIE *Die) {
+ Globals[Name] = Die;
}
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
+/// BestForm - Choose the best form for integer.
+///
+unsigned DIEInteger::BestForm(bool IsSigned) {
+ if (IsSigned) {
+ if ((char)Integer == (signed)Integer) return DW_FORM_data1;
+ if ((short)Integer == (signed)Integer) return DW_FORM_data2;
+ if ((int)Integer == (signed)Integer) return DW_FORM_data4;
+ } else {
+ if ((unsigned char)Integer == Integer) return DW_FORM_data1;
+ if ((unsigned short)Integer == Integer) return DW_FORM_data2;
+ if ((unsigned int)Integer == Integer) return DW_FORM_data4;
+ }
+ return DW_FORM_data8;
+}
+
/// EmitValue - Emit integer of appropriate size.
///
void DIEInteger::EmitValue(const DwarfWriter &DW, unsigned Form) const {
switch (Form) {
case DW_FORM_flag: // Fall thru
- case DW_FORM_data1: DW.EmitByte(Integer); break;
- case DW_FORM_data2: DW.EmitShort(Integer); break;
- case DW_FORM_data4: DW.EmitLong(Integer); break;
+ case DW_FORM_ref1: // Fall thru
+ case DW_FORM_data1: DW.EmitInt8(Integer); break;
+ case DW_FORM_ref2: // Fall thru
+ case DW_FORM_data2: DW.EmitInt16(Integer); break;
+ case DW_FORM_ref4: // Fall thru
+ case DW_FORM_data4: DW.EmitInt32(Integer); break;
+ case DW_FORM_ref8: // Fall thru
+ case DW_FORM_data8: DW.EmitInt64(Integer); break;
case DW_FORM_udata: DW.EmitULEB128Bytes(Integer); break;
case DW_FORM_sdata: DW.EmitSLEB128Bytes(Integer); break;
default: assert(0 && "DIE Value form not supported yet"); break;
unsigned DIEInteger::SizeOf(const DwarfWriter &DW, unsigned Form) const {
switch (Form) {
case DW_FORM_flag: // Fall thru
+ case DW_FORM_ref1: // Fall thru
case DW_FORM_data1: return sizeof(int8_t);
+ case DW_FORM_ref2: // Fall thru
case DW_FORM_data2: return sizeof(int16_t);
+ case DW_FORM_ref4: // Fall thru
case DW_FORM_data4: return sizeof(int32_t);
+ case DW_FORM_ref8: // Fall thru
+ case DW_FORM_data8: return sizeof(int64_t);
case DW_FORM_udata: return DW.SizeULEB128(Integer);
case DW_FORM_sdata: return DW.SizeSLEB128(Integer);
default: assert(0 && "DIE Value form not supported yet"); break;
/// EmitValue - Emit label value.
///
void DIEObjectLabel::EmitValue(const DwarfWriter &DW, unsigned Form) const {
- DW.EmitByte(sizeof(int8_t) + DW.getAddressSize());
- DW.EOL("DW_FORM_block1 length");
-
- DW.EmitByte(DW_OP_addr);
- DW.EOL("DW_OP_addr");
-
DW.EmitReference(Label);
}
/// SizeOf - Determine size of label value in bytes.
///
unsigned DIEObjectLabel::SizeOf(const DwarfWriter &DW, unsigned Form) const {
- return sizeof(int8_t) + sizeof(int8_t) + DW.getAddressSize();
+ return DW.getAddressSize();
}
//===----------------------------------------------------------------------===//
}
//===----------------------------------------------------------------------===//
-/// EmitValue - Emit extry offset.
+/// EmitValue - Emit debug information entry offset.
///
void DIEntry::EmitValue(const DwarfWriter &DW, unsigned Form) const {
- DW.EmitLong(Entry->getOffset());
+ DW.EmitInt32(Entry->getOffset());
}
-/// SizeOf - Determine size of label value in bytes.
+/// SizeOf - Determine size of debug information entry value in bytes.
///
unsigned DIEntry::SizeOf(const DwarfWriter &DW, unsigned Form) const {
return sizeof(int32_t);
//===----------------------------------------------------------------------===//
-DIE::DIE(unsigned Tag, unsigned ChildrenFlag)
-: Abbrev(new DIEAbbrev(Tag, ChildrenFlag))
+DIEBlock::~DIEBlock() {
+ for (unsigned i = 0, N = Values.size(); i < N; ++i) {
+ delete Values[i];
+ }
+}
+
+/// ComputeSize - calculate the size of the block.
+///
+unsigned DIEBlock::ComputeSize(DwarfWriter &DW) {
+ Size = 0;
+ for (unsigned i = 0, N = Values.size(); i < N; ++i) {
+ Size += Values[i]->SizeOf(DW, Forms[i]);
+ }
+ return Size;
+}
+
+/// BestForm - Choose the best form for data.
+///
+unsigned DIEBlock::BestForm() {
+ if ((unsigned char)Size == Size) return DW_FORM_block1;
+ if ((unsigned short)Size == Size) return DW_FORM_block2;
+ if ((unsigned int)Size == Size) return DW_FORM_block4;
+ return DW_FORM_block;
+}
+
+/// EmitValue - Emit block data.
+///
+void DIEBlock::EmitValue(const DwarfWriter &DW, unsigned Form) const {
+ switch (Form) {
+ case DW_FORM_block1: DW.EmitInt8(Size); break;
+ case DW_FORM_block2: DW.EmitInt16(Size); break;
+ case DW_FORM_block4: DW.EmitInt32(Size); break;
+ case DW_FORM_block: DW.EmitULEB128Bytes(Size); break;
+ default: assert(0 && "Improper form for block"); break;
+ }
+ for (unsigned i = 0, N = Values.size(); i < N; ++i) {
+ DW.EOL("");
+ Values[i]->EmitValue(DW, Forms[i]);
+ }
+}
+
+/// SizeOf - Determine size of block data in bytes.
+///
+unsigned DIEBlock::SizeOf(const DwarfWriter &DW, unsigned Form) const {
+ switch (Form) {
+ case DW_FORM_block1: return Size + sizeof(int8_t);
+ case DW_FORM_block2: return Size + sizeof(int16_t);
+ case DW_FORM_block4: return Size + sizeof(int32_t);
+ case DW_FORM_block: return Size + DW.SizeULEB128(Size);
+ default: assert(0 && "Improper form for block"); break;
+ }
+ return 0;
+}
+
+/// AddUInt - Add an unsigned integer value.
+///
+void DIEBlock::AddUInt(unsigned Form, uint64_t Integer) {
+ DIEInteger *DI = new DIEInteger(Integer);
+ Values.push_back(DI);
+ if (Form == 0) Form = DI->BestForm(false);
+ Forms.push_back(Form);
+}
+
+/// AddSInt - Add an signed integer value.
+///
+void DIEBlock::AddSInt(unsigned Form, int64_t Integer) {
+ DIEInteger *DI = new DIEInteger(Integer);
+ Values.push_back(DI);
+ if (Form == 0) Form = DI->BestForm(true);
+ Forms.push_back(Form);
+}
+
+/// AddString - Add a std::string value.
+///
+void DIEBlock::AddString(unsigned Form, const std::string &String) {
+ Values.push_back(new DIEString(String));
+ Forms.push_back(Form);
+}
+
+/// AddLabel - Add a Dwarf label value.
+///
+void DIEBlock::AddLabel(unsigned Form, const DWLabel &Label) {
+ Values.push_back(new DIEDwarfLabel(Label));
+ Forms.push_back(Form);
+}
+
+/// AddObjectLabel - Add a non-Dwarf label value.
+///
+void DIEBlock::AddObjectLabel(unsigned Form, const std::string &Label) {
+ Values.push_back(new DIEObjectLabel(Label));
+ Forms.push_back(Form);
+}
+
+/// AddDelta - Add a label delta value.
+///
+void DIEBlock::AddDelta(unsigned Form, const DWLabel &Hi, const DWLabel &Lo) {
+ Values.push_back(new DIEDelta(Hi, Lo));
+ Forms.push_back(Form);
+}
+
+/// AddDIEntry - Add a DIE value.
+///
+void DIEBlock::AddDIEntry(unsigned Form, DIE *Entry) {
+ Values.push_back(new DIEntry(Entry));
+ Forms.push_back(Form);
+}
+
+//===----------------------------------------------------------------------===//
+
+DIE::DIE(unsigned Tag)
+: Abbrev(new DIEAbbrev(Tag, DW_CHILDREN_no))
, AbbrevID(0)
, Offset(0)
, Size(0)
-, Context(NULL)
, Children()
, Values()
{}
for (unsigned j = 0, M = Values.size(); j < M; ++j) {
delete Values[j];
}
-
- if (Context) delete Context;
}
-/// AddInt - Add a simple integer attribute data and value.
-///
-void DIE::AddInt(unsigned Attribute, unsigned Form,
- int Integer, bool IsSigned) {
- if (Form == 0) {
- if (IsSigned) {
- if ((char)Integer == Integer) Form = DW_FORM_data1;
- else if ((short)Integer == Integer) Form = DW_FORM_data2;
- else Form = DW_FORM_data4;
- } else {
- if ((unsigned char)Integer == Integer) Form = DW_FORM_data1;
- else if ((unsigned short)Integer == Integer) Form = DW_FORM_data2;
- else Form = DW_FORM_data4;
- }
- }
+/// AddSiblingOffset - Add a sibling offset field to the front of the DIE.
+///
+void DIE::AddSiblingOffset() {
+ DIEInteger *DI = new DIEInteger(0);
+ Values.insert(Values.begin(), DI);
+ Abbrev->AddFirstAttribute(DW_AT_sibling, DW_FORM_ref4);
+}
+
+/// AddUInt - Add an unsigned integer attribute data and value.
+///
+void DIE::AddUInt(unsigned Attribute, unsigned Form, uint64_t Integer) {
+ DIEInteger *DI = new DIEInteger(Integer);
+ Values.push_back(DI);
+ if (!Form) Form = DI->BestForm(false);
+ Abbrev->AddAttribute(Attribute, Form);
+}
+
+/// AddSInt - Add an signed integer attribute data and value.
+///
+void DIE::AddSInt(unsigned Attribute, unsigned Form, int64_t Integer) {
+ DIEInteger *DI = new DIEInteger(Integer);
+ Values.push_back(DI);
+ if (!Form) Form = DI->BestForm(true);
Abbrev->AddAttribute(Attribute, Form);
- Values.push_back(new DIEInteger(Integer));
}
/// AddString - Add a std::string attribute data and value.
///
void DIE::AddString(unsigned Attribute, unsigned Form,
const std::string &String) {
- Abbrev->AddAttribute(Attribute, Form);
Values.push_back(new DIEString(String));
+ Abbrev->AddAttribute(Attribute, Form);
}
/// AddLabel - Add a Dwarf label attribute data and value.
///
void DIE::AddLabel(unsigned Attribute, unsigned Form,
const DWLabel &Label) {
- Abbrev->AddAttribute(Attribute, Form);
Values.push_back(new DIEDwarfLabel(Label));
+ Abbrev->AddAttribute(Attribute, Form);
}
/// AddObjectLabel - Add an non-Dwarf label attribute data and value.
///
void DIE::AddObjectLabel(unsigned Attribute, unsigned Form,
const std::string &Label) {
- Abbrev->AddAttribute(Attribute, Form);
Values.push_back(new DIEObjectLabel(Label));
+ Abbrev->AddAttribute(Attribute, Form);
}
/// AddDelta - Add a label delta attribute data and value.
///
void DIE::AddDelta(unsigned Attribute, unsigned Form,
const DWLabel &Hi, const DWLabel &Lo) {
- Abbrev->AddAttribute(Attribute, Form);
Values.push_back(new DIEDelta(Hi, Lo));
+ Abbrev->AddAttribute(Attribute, Form);
}
/// AddDIEntry - Add a DIE attribute data and value.
///
-void DIE::AddDIEntry(unsigned Attribute,
- unsigned Form, DIE *Entry) {
- Abbrev->AddAttribute(Attribute, Form);
+void DIE::AddDIEntry(unsigned Attribute, unsigned Form, DIE *Entry) {
Values.push_back(new DIEntry(Entry));
+ Abbrev->AddAttribute(Attribute, Form);
+}
+
+/// AddBlock - Add block data.
+///
+void DIE::AddBlock(unsigned Attribute, unsigned Form, DIEBlock *Block) {
+ assert(Block->Size && "Block size has not been computed");
+ Values.push_back(Block);
+ if (!Form) Form = Block->BestForm();
+ Abbrev->AddAttribute(Attribute, Form);
}
/// Complete - Indicate that all attributes have been added and ready to get an
/// AddChild - Add a child to the DIE.
///
void DIE::AddChild(DIE *Child) {
+ assert(Abbrev && "Adding children without an abbreviation");
+ Abbrev->setChildrenFlag(DW_CHILDREN_yes);
Children.push_back(Child);
}
//===----------------------------------------------------------------------===//
-/// NewBasicType - Creates a new basic type if necessary, then adds to the
-/// context and owner.
-DIE *DWContext::NewBasicType(const Type *Ty, unsigned Size, unsigned Align) {
- DIE *TypeDie = Types[Ty];
-
- // If first occurance of type.
- if (!TypeDie) {
- const char *Name;
- unsigned Encoding = 0;
-
- switch (Ty->getTypeID()) {
- case Type::UByteTyID:
- Name = "unsigned char";
- Encoding = DW_ATE_unsigned_char;
- break;
- case Type::SByteTyID:
- Name = "char";
- Encoding = DW_ATE_signed_char;
- break;
- case Type::UShortTyID:
- Name = "unsigned short";
- Encoding = DW_ATE_unsigned;
- break;
- case Type::ShortTyID:
- Name = "short";
- Encoding = DW_ATE_signed;
- break;
- case Type::UIntTyID:
- Name = "unsigned int";
- Encoding = DW_ATE_unsigned;
- break;
- case Type::IntTyID:
- Name = "int";
- Encoding = DW_ATE_signed;
- break;
- case Type::ULongTyID:
- Name = "unsigned long long";
- Encoding = DW_ATE_unsigned;
- break;
- case Type::LongTyID:
- Name = "long long";
- Encoding = DW_ATE_signed;
- break;
- case Type::FloatTyID:
- Name = "float";
- Encoding = DW_ATE_float;
- break;
- case Type::DoubleTyID:
- Name = "float";
- Encoding = DW_ATE_float;
- break;
- default:
- // FIXME - handle more complex types.
- Name = "unknown";
- Encoding = DW_ATE_address;
- break;
- }
-
- // construct the type DIE.
- TypeDie = new DIE(DW_TAG_base_type, DW_CHILDREN_no);
- TypeDie->AddString(DW_AT_name, DW_FORM_string, Name);
- TypeDie->AddInt (DW_AT_byte_size, DW_FORM_data1, Size);
- TypeDie->AddInt (DW_AT_encoding, DW_FORM_data1, Encoding);
- TypeDie->Complete(DW);
-
- // Add to context owner.
- Owner->AddChild(TypeDie);
-
- // Add to map.
- Types[Ty] = TypeDie;
- }
-
- return TypeDie;
-}
-
-/// NewGlobalVariable - Creates a global variable, if necessary, then adds in
-/// the context and owner.
-DIE *DWContext::NewGlobalVariable(const std::string &Name,
- const std::string &MangledName,
- DIE *Type) {
- DIE *VariableDie = Variables[MangledName];
-
- // If first occurance of variable.
- if (!VariableDie) {
- // FIXME - need source file name line number.
- VariableDie = new DIE(DW_TAG_variable, DW_CHILDREN_no);
- VariableDie->AddString (DW_AT_name, DW_FORM_string, Name);
- VariableDie->AddInt (DW_AT_decl_file, 0, 0);
- VariableDie->AddInt (DW_AT_decl_line, 0, 0);
- VariableDie->AddDIEntry (DW_AT_type, DW_FORM_ref4, Type);
- VariableDie->AddInt (DW_AT_external, DW_FORM_flag, 1);
- // FIXME - needs to be a proper expression.
- VariableDie->AddObjectLabel(DW_AT_location, DW_FORM_block1, MangledName);
- VariableDie->Complete(DW);
-
- // Add to context owner.
- Owner->AddChild(VariableDie);
-
- // Add to map.
- Variables[MangledName] = VariableDie;
- }
-
- return VariableDie;
-}
+/// DWContext
//===----------------------------------------------------------------------===//
/// 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 {
- if (DwarfVerbose) {
+ if (DwarfVerbose && !Comment.empty()) {
O << "\t"
<< Asm->CommentString
<< " "
O << "\n";
}
+/// EmitAlign - Print a align directive.
+///
+void DwarfWriter::EmitAlign(unsigned Alignment) const {
+ O << Asm->AlignDirective << Alignment << "\n";
+}
+
/// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
/// unsigned leb128 value.
void DwarfWriter::EmitULEB128Bytes(unsigned Value) const {
return Size;
}
-/// EmitByte - Emit a byte directive and value.
+/// EmitInt8 - Emit a byte directive and value.
///
-void DwarfWriter::EmitByte(int Value) const {
+void DwarfWriter::EmitInt8(int Value) const {
O << Asm->Data8bitsDirective;
- PrintHex(Value);
+ PrintHex(Value & 0xFF);
}
-/// EmitShort - Emit a short directive and value.
+/// EmitInt16 - Emit a short directive and value.
///
-void DwarfWriter::EmitShort(int Value) const {
+void DwarfWriter::EmitInt16(int Value) const {
O << Asm->Data16bitsDirective;
- PrintHex(Value);
+ PrintHex(Value & 0xFFFF);
}
-/// EmitLong - Emit a long directive and value.
+/// EmitInt32 - Emit a long directive and value.
///
-void DwarfWriter::EmitLong(int Value) const {
+void DwarfWriter::EmitInt32(int Value) const {
O << Asm->Data32bitsDirective;
PrintHex(Value);
}
+/// EmitInt64 - Emit a long long directive and value.
+///
+void DwarfWriter::EmitInt64(uint64_t Value) const {
+ if (Asm->Data64bitsDirective) {
+ O << Asm->Data64bitsDirective << "0x" << std::hex << Value << std::dec;
+ } else {
+ const TargetData &TD = Asm->TM.getTargetData();
+
+ if (TD.isBigEndian()) {
+ EmitInt32(unsigned(Value >> 32)); O << "\n";
+ EmitInt32(unsigned(Value));
+ } else {
+ EmitInt32(unsigned(Value)); O << "\n";
+ EmitInt32(unsigned(Value >> 32));
+ }
+ }
+}
+
/// 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 {
void DwarfWriter::PrintLabelName(const char *Tag, unsigned Number) const {
O << Asm->PrivateGlobalPrefix
<< "debug_"
- << Tag
- << Number;
+ << Tag;
+ if (Number) O << Number;
}
/// EmitLabel - Emit location label for internal use by Dwarf.
return DWLabel("string", StringID);
}
-/// NewGlobalType - Make the type visible globally using the given name.
+/// AddSourceLine - Add location information to specified debug information
+/// entry.
+void DwarfWriter::AddSourceLine(DIE *Die, CompileUnitDesc *File, unsigned Line) {
+ if (File && Line) {
+ CompileUnit *FileUnit = FindCompileUnit(File);
+ unsigned FileID = FileUnit->getID();
+ Die->AddUInt(DW_AT_decl_file, 0, FileID);
+ Die->AddUInt(DW_AT_decl_line, 0, Line);
+ }
+}
+
+/// AddAddress - Add an address attribute to a die based on the location
+/// provided.
+void DwarfWriter::AddAddress(DIE *Die, unsigned Attribute,
+ MachineLocation &Location) {
+ DIEBlock *Block = new DIEBlock();
+ if (Location.isRegister()) {
+ Block->AddUInt(DW_FORM_data1, DW_OP_reg0 + Location.getRegister());
+ } else {
+ Block->AddUInt(DW_FORM_data1, DW_OP_breg0 + Location.getRegister());
+ Block->AddUInt(DW_FORM_sdata, Location.getOffset());
+ }
+ Block->ComputeSize(*this);
+ Die->AddBlock(Attribute, 0, Block);
+}
+
+/// getDieMapSlotFor - Returns the debug information entry map slot for the
+/// specified debug descriptor.
+DIE *&DwarfWriter::getDieMapSlotFor(DebugInfoDesc *DD) {
+ return DescToDieMap[DD];
+}
+
+/// NewType - Create a new type DIE.
+///
+DIE *DwarfWriter::NewType(DIE *Context, TypeDesc *TyDesc, CompileUnit *Unit) {
+ if (!TyDesc) {
+ // FIXME - Hack for missing types
+ DIE *Die = new DIE(DW_TAG_base_type);
+ Die->AddUInt(DW_AT_byte_size, 0, 4);
+ Die->AddUInt(DW_AT_encoding, DW_FORM_data1, DW_ATE_signed);
+ Unit->getDie()->AddChild(Die);
+ return Die;
+ }
+
+ // FIXME - Should handle other contexts that compile units.
+
+ // Check for pre-existence.
+ DIE *&Slot = Unit->getDieMapSlotFor(TyDesc);
+ if (Slot) return Slot;
+
+ // Get core information.
+ const std::string &Name = TyDesc->getName();
+ uint64_t Size = TyDesc->getSize() >> 3;
+
+ DIE *Ty = NULL;
+
+ if (BasicTypeDesc *BasicTy = dyn_cast<BasicTypeDesc>(TyDesc)) {
+ // Fundamental types like int, float, bool
+ Slot = Ty = new DIE(DW_TAG_base_type);
+ unsigned Encoding = BasicTy->getEncoding();
+ Ty->AddUInt (DW_AT_encoding, DW_FORM_data1, Encoding);
+ } else if (DerivedTypeDesc *DerivedTy = dyn_cast<DerivedTypeDesc>(TyDesc)) {
+ // Create specific DIE.
+ Slot = Ty = new DIE(DerivedTy->getTag());
+
+ // Map to main type, void will not have a type.
+ if (TypeDesc *FromTy = DerivedTy->getFromType()) {
+ Ty->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, FromTy, Unit));
+ }
+ } else if (CompositeTypeDesc *CompTy = dyn_cast<CompositeTypeDesc>(TyDesc)) {
+ // Create specific DIE.
+ Slot = Ty = new DIE(CompTy->getTag());
+ std::vector<DebugInfoDesc *> &Elements = CompTy->getElements();
+
+ switch (CompTy->getTag()) {
+ case DW_TAG_array_type: {
+ // Add element type.
+ if (TypeDesc *FromTy = CompTy->getFromType()) {
+ Ty->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, FromTy, Unit));
+ }
+ // Don't emit size attribute.
+ Size = 0;
+
+ // Construct an anonymous type for index type.
+ DIE *IndexTy = new DIE(DW_TAG_base_type);
+ IndexTy->AddUInt(DW_AT_byte_size, 0, 4);
+ IndexTy->AddUInt(DW_AT_encoding, DW_FORM_data1, DW_ATE_signed);
+ // Add to context.
+ Context->AddChild(IndexTy);
+
+ // Add subranges to array type.
+ for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
+ SubrangeDesc *SRD = cast<SubrangeDesc>(Elements[i]);
+ int64_t Lo = SRD->getLo();
+ int64_t Hi = SRD->getHi();
+ DIE *Subrange = new DIE(DW_TAG_subrange_type);
+
+ // If a range is available.
+ if (Lo != Hi) {
+ Subrange->AddDIEntry(DW_AT_type, DW_FORM_ref4, IndexTy);
+ // Only add low if non-zero.
+ if (Lo) Subrange->AddSInt(DW_AT_lower_bound, 0, Lo);
+ Subrange->AddSInt(DW_AT_upper_bound, 0, Hi);
+ }
+ Ty->AddChild(Subrange);
+ }
+
+ break;
+ }
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type: {
+ // FIXME - this is just the basics.
+ // Add elements to structure type.
+ for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
+ DerivedTypeDesc *MemberDesc = cast<DerivedTypeDesc>(Elements[i]);
+
+ // Extract the basic information.
+ const std::string &Name = MemberDesc->getName();
+ TypeDesc *MemTy = MemberDesc->getFromType();
+ uint64_t Size = MemberDesc->getSize();
+ uint64_t Align = MemberDesc->getAlign();
+ uint64_t Offset = MemberDesc->getOffset();
+
+ // Construct member debug information entry.
+ DIE *Member = new DIE(DW_TAG_member);
+
+ // Add name if not "".
+ if (!Name.empty()) Member->AddString(DW_AT_name, DW_FORM_string, Name);
+ // Add location if available.
+ AddSourceLine(Member, MemberDesc->getFile(), MemberDesc->getLine());
+
+ // Most of the time the field info is the same as the members.
+ uint64_t FieldSize = Size;
+ uint64_t FieldAlign = Align;
+ uint64_t FieldOffset = Offset;
+
+ if (TypeDesc *FromTy = MemberDesc->getFromType()) {
+ Member->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, FromTy, Unit));
+ FieldSize = FromTy->getSize();
+ FieldAlign = FromTy->getSize();
+ }
+
+ // Unless we have a bit field.
+ if (FieldSize != Size) {
+ // Construct the alignment mask.
+ uint64_t AlignMask = ~(FieldAlign - 1);
+ // Determine the high bit + 1 of the declared size.
+ uint64_t HiMark = (Offset + FieldSize) & AlignMask;
+ // Work backwards to determine the base offset of the field.
+ FieldOffset = HiMark - FieldSize;
+ // Now normalize offset to the field.
+ Offset -= FieldOffset;
+
+ // Maybe we need to work from the other.
+ const TargetData &TD = Asm->TM.getTargetData();
+ if (TD.isLittleEndian()) Offset = FieldSize - (Offset + Size);
+
+ Member->AddUInt(DW_AT_byte_size, 0, FieldSize >> 3);
+ Member->AddUInt(DW_AT_bit_size, 0, Size);
+ Member->AddUInt(DW_AT_bit_offset, 0, Offset);
+ }
+
+ // Add computation for offset.
+ DIEBlock *Block = new DIEBlock();
+ Block->AddUInt(DW_FORM_data1, DW_OP_plus_uconst);
+ Block->AddUInt(DW_FORM_udata, FieldOffset >> 3);
+ Block->ComputeSize(*this);
+ Member->AddBlock(DW_AT_data_member_location, 0, Block);
+
+ Ty->AddChild(Member);
+ }
+ break;
+ }
+ case DW_TAG_enumeration_type: {
+ // Add enumerators to enumeration type.
+ for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
+ EnumeratorDesc *ED = cast<EnumeratorDesc>(Elements[i]);
+ const std::string &Name = ED->getName();
+ int64_t Value = ED->getValue();
+ DIE *Enumerator = new DIE(DW_TAG_enumerator);
+ Enumerator->AddString(DW_AT_name, DW_FORM_string, Name);
+ Enumerator->AddSInt(DW_AT_const_value, DW_FORM_sdata, Value);
+ Ty->AddChild(Enumerator);
+ }
+
+ break;
+ }
+ default: break;
+ }
+ }
+
+ assert(Ty && "Type not supported yet");
+
+ // Add size if non-zero (derived types don't have a size.)
+ if (Size) Ty->AddUInt(DW_AT_byte_size, 0, Size);
+ // Add name if not anonymous or intermediate type.
+ if (!Name.empty()) Ty->AddString(DW_AT_name, DW_FORM_string, Name);
+ // Add source line info if available.
+ AddSourceLine(Ty, TyDesc->getFile(), TyDesc->getLine());
+
+ // Add to context owner.
+ Context->AddChild(Ty);
+
+ return Slot;
+}
+
+/// NewCompileUnit - Create new compile unit and it's debug information entry.
///
-void DwarfWriter::NewGlobalType(const std::string &Name, DIE *Type) {
- assert(!GlobalTypes[Name] && "Duplicate global type");
- GlobalTypes[Name] = Type;
+CompileUnit *DwarfWriter::NewCompileUnit(CompileUnitDesc *UnitDesc,
+ unsigned ID) {
+ // Construct debug information entry.
+ DIE *Die = new DIE(DW_TAG_compile_unit);
+ Die->AddLabel (DW_AT_stmt_list, DW_FORM_data4, DWLabel("line", 0));
+ Die->AddLabel (DW_AT_high_pc, DW_FORM_addr, DWLabel("text_end", 0));
+ Die->AddLabel (DW_AT_low_pc, DW_FORM_addr, DWLabel("text_begin", 0));
+ Die->AddString(DW_AT_producer, DW_FORM_string, UnitDesc->getProducer());
+ Die->AddUInt (DW_AT_language, DW_FORM_data1, UnitDesc->getLanguage());
+ Die->AddString(DW_AT_name, DW_FORM_string, UnitDesc->getFileName());
+ Die->AddString(DW_AT_comp_dir, DW_FORM_string, UnitDesc->getDirectory());
+
+ // Add debug information entry to descriptor map.
+ DIE *&Slot = getDieMapSlotFor(UnitDesc);
+ Slot = Die;
+
+ // Construct compile unit.
+ CompileUnit *Unit = new CompileUnit(UnitDesc, ID, Die);
+
+ // Add Unit to compile unit map.
+ DescToUnitMap[UnitDesc] = Unit;
+
+ return Unit;
}
-/// NewGlobalEntity - Make the entity visible globally using the given name.
+/// FindCompileUnit - Get the compile unit for the given descriptor.
///
-void DwarfWriter::NewGlobalEntity(const std::string &Name, DIE *Entity) {
- assert(!GlobalEntities[Name] && "Duplicate global variable or function");
- GlobalEntities[Name] = Entity;
+CompileUnit *DwarfWriter::FindCompileUnit(CompileUnitDesc *UnitDesc) {
+ CompileUnit *Unit = DescToUnitMap[UnitDesc];
+ assert(Unit && "Missing compile unit.");
+ return Unit;
}
-/// NewGlobalVariable - Add a new global variable DIE to the context.
+/// NewGlobalVariable - Add a new global variable DIE.
///
-void DwarfWriter::NewGlobalVariable(DWContext *Context,
- const std::string &Name,
- const std::string &MangledName,
- const Type *Ty,
- unsigned Size, unsigned Align) {
- // Get the DIE type for the global.
- DIE *Type = Context->NewBasicType(Ty, Size, Align);
- DIE *Variable = Context->NewGlobalVariable(Name, MangledName, Type);
- NewGlobalEntity(Name, Variable);
+DIE *DwarfWriter::NewGlobalVariable(GlobalVariableDesc *GVD) {
+ // Get the compile unit context.
+ CompileUnitDesc *UnitDesc = static_cast<CompileUnitDesc *>(GVD->getContext());
+ CompileUnit *Unit = FindCompileUnit(UnitDesc);
+
+ // Check for pre-existence.
+ DIE *&Slot = Unit->getDieMapSlotFor(GVD);
+ if (Slot) return Slot;
+
+ // Get the global variable itself.
+ GlobalVariable *GV = GVD->getGlobalVariable();
+ // Generate the mangled name.
+ std::string MangledName = Asm->Mang->getValueName(GV);
+
+ // Gather the details (simplify add attribute code.)
+ const std::string &Name = GVD->getName();
+
+ // Get the global's type.
+ DIE *Type = NewType(Unit->getDie(), GVD->getType(), Unit);
+
+ // Create the globale variable DIE.
+ DIE *VariableDie = new DIE(DW_TAG_variable);
+ VariableDie->AddString (DW_AT_name, DW_FORM_string, Name);
+ VariableDie->AddDIEntry (DW_AT_type, DW_FORM_ref4, Type);
+ VariableDie->AddUInt (DW_AT_external, DW_FORM_flag, 1);
+
+ // Add source line info if available.
+ AddSourceLine(VariableDie, UnitDesc, GVD->getLine());
+
+ // Add address.
+ DIEBlock *Block = new DIEBlock();
+ Block->AddUInt(DW_FORM_data1, DW_OP_addr);
+ Block->AddObjectLabel(DW_FORM_udata, MangledName);
+ Block->ComputeSize(*this);
+ VariableDie->AddBlock(DW_AT_location, 0, Block);
+
+ // Add to map.
+ Slot = VariableDie;
+
+ // Add to context owner.
+ Unit->getDie()->AddChild(VariableDie);
+
+ // Expose as global.
+ // FIXME - need to check external flag.
+ Unit->AddGlobal(Name, VariableDie);
+
+ return VariableDie;
}
-/// NewCompileUnit - Create new compile unit information.
+/// NewSubprogram - Add a new subprogram DIE.
///
-DIE *DwarfWriter::NewCompileUnit(const CompileUnitWrapper &CompileUnit) {
- DIE *Unit = new DIE(DW_TAG_compile_unit, DW_CHILDREN_yes);
- // FIXME - use the correct line set.
- Unit->AddLabel (DW_AT_stmt_list, DW_FORM_data4, DWLabel("line", 0));
- Unit->AddLabel (DW_AT_high_pc, DW_FORM_addr, DWLabel("text_end", 0));
- Unit->AddLabel (DW_AT_low_pc, DW_FORM_addr, DWLabel("text_begin", 0));
- Unit->AddString(DW_AT_producer, DW_FORM_string, CompileUnit.getProducer());
- Unit->AddInt (DW_AT_language, DW_FORM_data1, CompileUnit.getLanguage());
- Unit->AddString(DW_AT_name, DW_FORM_string, CompileUnit.getFileName());
- Unit->AddString(DW_AT_comp_dir, DW_FORM_string, CompileUnit.getDirectory());
- Unit->Complete(*this);
+DIE *DwarfWriter::NewSubprogram(SubprogramDesc *SPD) {
+ // Get the compile unit context.
+ CompileUnitDesc *UnitDesc = static_cast<CompileUnitDesc *>(SPD->getContext());
+ CompileUnit *Unit = FindCompileUnit(UnitDesc);
+
+ // Check for pre-existence.
+ DIE *&Slot = Unit->getDieMapSlotFor(SPD);
+ if (Slot) return Slot;
- return Unit;
+ // Gather the details (simplify add attribute code.)
+ const std::string &Name = SPD->getName();
+ DIE *Type = NewType(Unit->getDie(), SPD->getType(), Unit);
+ unsigned IsExternal = SPD->isStatic() ? 0 : 1;
+
+ DIE *SubprogramDie = new DIE(DW_TAG_subprogram);
+ SubprogramDie->AddString (DW_AT_name, DW_FORM_string, Name);
+ SubprogramDie->AddDIEntry (DW_AT_type, DW_FORM_ref4, Type);
+ SubprogramDie->AddUInt (DW_AT_external, DW_FORM_flag, IsExternal);
+
+ // Add source line info if available.
+ AddSourceLine(SubprogramDie, UnitDesc, SPD->getLine());
+
+ // Add to map.
+ Slot = SubprogramDie;
+
+ // Add to context owner.
+ Unit->getDie()->AddChild(SubprogramDie);
+
+ // Expose as global.
+ Unit->AddGlobal(Name, SubprogramDie);
+
+ return SubprogramDie;
+}
+
+/// NewScopeVariable - Create a new scope variable.
+///
+DIE *DwarfWriter::NewScopeVariable(DebugVariable *DV, CompileUnit *Unit) {
+ // Get the descriptor.
+ VariableDesc *VD = DV->getDesc();
+
+ // Translate tag to proper Dwarf tag. The result variable is dropped for now.
+ unsigned Tag;
+ switch (VD->getTag()) {
+ case DW_TAG_return_variable: return NULL;
+ case DW_TAG_arg_variable: Tag = DW_TAG_formal_parameter; break;
+ case DW_TAG_auto_variable: // fall thru
+ default: Tag = DW_TAG_variable; break;
+ }
+
+ // Define variable debug information entry.
+ DIE *VariableDie = new DIE(Tag);
+ VariableDie->AddString(DW_AT_name, DW_FORM_string, VD->getName());
+
+ // Add source line info if available.
+ AddSourceLine(VariableDie, VD->getFile(), VD->getLine());
+
+ // Add variable type.
+ DIE *Type = NewType(Unit->getDie(), VD->getType(), Unit);
+ VariableDie->AddDIEntry(DW_AT_type, DW_FORM_ref4, Type);
+
+ // Add variable address.
+ MachineLocation Location;
+ Asm->TM.getRegisterInfo()->getLocation(*MF, DV->getFrameIndex(), Location);
+ AddAddress(VariableDie, DW_AT_location, Location);
+
+ return VariableDie;
+}
+
+/// ConstructScope - Construct the components of a scope.
+///
+void DwarfWriter::ConstructScope(DebugScope *ParentScope,
+ DIE *ParentDie, CompileUnit *Unit) {
+ // Add variables to scope.
+ std::vector<DebugVariable *> &Variables = ParentScope->getVariables();
+ for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
+ DIE *VariableDie = NewScopeVariable(Variables[i], Unit);
+ if (VariableDie) ParentDie->AddChild(VariableDie);
+ }
+
+ // Add nested scopes.
+ std::vector<DebugScope *> &Scopes = ParentScope->getScopes();
+ for (unsigned j = 0, M = Scopes.size(); j < M; ++j) {
+ // Define the Scope debug information entry.
+ DebugScope *Scope = Scopes[j];
+ // FIXME - Ignore inlined functions for the time being.
+ if (Scope->getParent()) continue;
+
+ DIE *ScopeDie = new DIE(DW_TAG_lexical_block);
+
+ // Add the scope bounds.
+ if (unsigned StartID = Scope->getStartLabelID()) {
+ ScopeDie->AddLabel(DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("loc", StartID));
+ } else {
+ ScopeDie->AddLabel(DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("func_begin", SubprogramCount));
+ }
+ if (unsigned EndID = Scope->getEndLabelID()) {
+ ScopeDie->AddLabel(DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("loc", EndID));
+ } else {
+ ScopeDie->AddLabel(DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("func_end", SubprogramCount));
+ }
+
+ // Add the scope contents.
+ ConstructScope(Scope, ScopeDie, Unit);
+ ParentDie->AddChild(ScopeDie);
+ }
+}
+
+/// ConstructRootScope - Construct the scope for the subprogram.
+///
+void DwarfWriter::ConstructRootScope(DebugScope *RootScope) {
+ // Exit if there is no root scope.
+ if (!RootScope) return;
+
+ // Get the subprogram debug information entry.
+ SubprogramDesc *SPD = cast<SubprogramDesc>(RootScope->getDesc());
+
+ // Get the compile unit context.
+ CompileUnitDesc *UnitDesc = static_cast<CompileUnitDesc *>(SPD->getContext());
+ CompileUnit *Unit = FindCompileUnit(UnitDesc);
+
+ // Get the subprogram die.
+ DIE *SPDie = Unit->getDieMapSlotFor(SPD);
+ assert(SPDie && "Missing subprogram descriptor");
+
+ // Add the function bounds.
+ SPDie->AddLabel(DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("func_begin", SubprogramCount));
+ SPDie->AddLabel(DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("func_end", SubprogramCount));
+ MachineLocation Location(Asm->TM.getRegisterInfo()->getFrameRegister(*MF));
+ AddAddress(SPDie, DW_AT_frame_base, Location);
+
+ ConstructScope(RootScope, SPDie, Unit);
}
/// EmitInitial - Emit initial Dwarf declarations. This is necessary for cc
///
void DwarfWriter::EmitInitial() const {
// Dwarf sections base addresses.
- Asm->SwitchSection(DwarfAbbrevSection, 0);
- EmitLabel("abbrev", 0);
+ Asm->SwitchSection(DwarfFrameSection, 0);
+ EmitLabel("section_frame", 0);
Asm->SwitchSection(DwarfInfoSection, 0);
+ EmitLabel("section_info", 0);
EmitLabel("info", 0);
+ Asm->SwitchSection(DwarfAbbrevSection, 0);
+ EmitLabel("section_abbrev", 0);
+ EmitLabel("abbrev", 0);
+ Asm->SwitchSection(DwarfARangesSection, 0);
+ EmitLabel("section_aranges", 0);
+ Asm->SwitchSection(DwarfMacInfoSection, 0);
+ EmitLabel("section_macinfo", 0);
Asm->SwitchSection(DwarfLineSection, 0);
+ EmitLabel("section_line", 0);
EmitLabel("line", 0);
-
- // Standard sections base addresses.
+ Asm->SwitchSection(DwarfLocSection, 0);
+ EmitLabel("section_loc", 0);
+ Asm->SwitchSection(DwarfPubNamesSection, 0);
+ EmitLabel("section_pubnames", 0);
+ Asm->SwitchSection(DwarfStrSection, 0);
+ EmitLabel("section_str", 0);
+ Asm->SwitchSection(DwarfRangesSection, 0);
+ EmitLabel("section_ranges", 0);
+
Asm->SwitchSection(TextSection, 0);
EmitLabel("text_begin", 0);
Asm->SwitchSection(DataSection, 0);
// Get the abbreviation for this DIE.
unsigned AbbrevID = Die->getAbbrevID();
const DIEAbbrev &Abbrev = Abbreviations[AbbrevID];
+
+ O << "\n";
// Emit the code (index) for the abbreviation.
EmitULEB128Bytes(AbbrevID);
EOL(std::string("Abbrev [" +
utostr(AbbrevID) +
- "] " +
- TagString(Abbrev.getTag())) +
- " ");
+ "] 0x" + utohexstr(Die->getOffset()) +
+ ":0x" + utohexstr(Die->getSize()) + " " +
+ TagString(Abbrev.getTag())));
const std::vector<DIEValue *> &Values = Die->getValues();
const std::vector<DIEAbbrevData> &AbbrevData = Abbrev.getData();
switch (Attr) {
case DW_AT_sibling: {
- EmitLong(Die->SiblingOffset());
+ EmitInt32(Die->SiblingOffset());
break;
}
default: {
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");
+ EmitInt8(0); EOL("End Of Children Mark");
}
}
/// SizeAndOffsetDie - Compute the size and offset of a DIE.
///
-unsigned DwarfWriter::SizeAndOffsetDie(DIE *Die, unsigned Offset) const {
+unsigned DwarfWriter::SizeAndOffsetDie(DIE *Die, unsigned Offset, bool Last) {
+ // Get the children.
+ const std::vector<DIE *> &Children = Die->getChildren();
+
+ // If not last sibling and has children then add sibling offset attribute.
+ if (!Last && !Children.empty()) Die->AddSiblingOffset();
+
+ // Record the abbreviation.
+ Die->Complete(*this);
+
// Get the abbreviation for this DIE.
unsigned AbbrevID = Die->getAbbrevID();
const DIEAbbrev &Abbrev = Abbreviations[AbbrevID];
}
// Emit the DIE children if any.
- if (Abbrev.getChildrenFlag() == DW_CHILDREN_yes) {
- const std::vector<DIE *> &Children = Die->getChildren();
+ if (!Children.empty()) {
+ assert(Abbrev.getChildrenFlag() == DW_CHILDREN_yes &&
+ "Children flag not set");
for (unsigned j = 0, M = Children.size(); j < M; ++j) {
- // FIXME - handle sibling offsets.
- // FIXME - handle all DIE types.
- Offset = SizeAndOffsetDie(Children[j], Offset);
+ Offset = SizeAndOffsetDie(Children[j], Offset, (j + 1) == M);
}
// End of children marker.
/// 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);
+ CompileUnit *Unit = CompileUnits[i];
+ if (Unit->hasContent()) {
+ // Compute size of compile 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)
+ SizeAndOffsetDie(Unit->getDie(), Offset, (i + 1) == N);
+ }
}
}
// 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) {
- EmitLabel("info_begin", 0);
-
- // 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");
+ // Process each compile unit.
+ for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
+ CompileUnit *Unit = CompileUnits[i];
- EmitShort(DWARF_VERSION); EOL("DWARF version number");
-
- EmitReference("abbrev_begin", 0); EOL("Offset Into Abbrev. Section");
-
- EmitByte(AddressSize); EOL("Address Size (in bytes)");
+ if (Unit->hasContent()) {
+ DIE *Die = Unit->getDie();
+ // Emit the compile units header.
+ EmitLabel("info_begin", Unit->getID());
+ // Emit size of content not including length itself
+ unsigned ContentSize = Die->getSize() +
+ sizeof(int16_t) + // DWARF version number
+ sizeof(int32_t) + // Offset Into Abbrev. Section
+ sizeof(int8_t); // Pointer Size (in bytes)
+
+ EmitInt32(ContentSize); EOL("Length of Compilation Unit Info");
+ EmitInt16(DWARF_VERSION); EOL("DWARF version number");
+ EmitReference("abbrev_begin", 0); EOL("Offset Into Abbrev. Section");
+ EmitInt8(AddressSize); EOL("Address Size (in bytes)");
- // Process each compile unit.
- for (unsigned i = 0; i < N; ++i) {
- EmitDIE(CompileUnits[i]);
+ EmitDIE(Die);
+ EmitLabel("info_end", Unit->getID());
}
- EmitLabel("info_end", 0);
+ O << "\n";
}
}
// Emit the abbreviations data.
Abbrev.Emit(*this);
+
+ O << "\n";
}
EmitLabel("abbrev_end", 0);
+
+ O << "\n";
}
}
EOL("Length of Source Line Info");
EmitLabel("line_begin", 0);
- EmitShort(DWARF_VERSION); EOL("DWARF version number");
+ EmitInt16(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");
+ EmitInt8(1); EOL("Minimum Instruction Length");
- EmitByte(1); EOL("Default is_stmt_start flag");
+ EmitInt8(1); EOL("Default is_stmt_start flag");
- EmitByte(MinLineDelta); EOL("Line Base Value (Special Opcodes)");
+ EmitInt8(MinLineDelta); EOL("Line Base Value (Special Opcodes)");
- EmitByte(MaxLineDelta); EOL("Line Range Value (Special Opcodes)");
+ EmitInt8(MaxLineDelta); EOL("Line Range Value (Special Opcodes)");
- EmitByte(-MinLineDelta); EOL("Special Opcode Base");
+ EmitInt8(-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");
+ EmitInt8(0); EOL("DW_LNS_copy arg count");
+ EmitInt8(1); EOL("DW_LNS_advance_pc arg count");
+ EmitInt8(1); EOL("DW_LNS_advance_line arg count");
+ EmitInt8(1); EOL("DW_LNS_set_file arg count");
+ EmitInt8(1); EOL("DW_LNS_set_column arg count");
+ EmitInt8(0); EOL("DW_LNS_negate_stmt arg count");
+ EmitInt8(0); EOL("DW_LNS_set_basic_block arg count");
+ EmitInt8(0); EOL("DW_LNS_const_add_pc arg count");
+ EmitInt8(1); EOL("DW_LNS_fixed_advance_pc arg count");
const UniqueVector<std::string> &Directories = DebugInfo->getDirectories();
const UniqueVector<SourceFileInfo> &SourceFiles = DebugInfo->getSourceFiles();
DirectoryID <= NDID; ++DirectoryID) {
EmitString(Directories[DirectoryID]); EOL("Directory");
}
- EmitByte(0); EOL("End of directories");
+ EmitInt8(0); EOL("End of directories");
// Emit files.
for (unsigned SourceID = 1, NSID = SourceFiles.size();
EmitULEB128Bytes(0); EOL("Mod date");
EmitULEB128Bytes(0); EOL("File size");
}
- EmitByte(0); EOL("End of files");
+ EmitInt8(0); EOL("End of files");
EmitLabel("line_prolog_end", 0);
// Construct rows of the address, source, line, column matrix.
for (unsigned i = 0, N = LineInfos.size(); i < N; ++i) {
SourceLineInfo *LineInfo = LineInfos[i];
+
+ if (DwarfVerbose) {
+ unsigned SourceID = LineInfo->getSourceID();
+ const SourceFileInfo &SourceFile = SourceFiles[SourceID];
+ unsigned DirectoryID = SourceFile.getDirectoryID();
+ O << "\t"
+ << Asm->CommentString << " "
+ << Directories[DirectoryID]
+ << SourceFile.getName() << ":"
+ << LineInfo->getLine() << "\n";
+ }
// 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");
- EmitReference("loc", i + 1); EOL("Location label");
+ EmitInt8(0); EOL("Extended Op");
+ EmitInt8(4 + 1); EOL("Op size");
+ EmitInt8(DW_LNE_set_address); EOL("DW_LNE_set_address");
+ EmitReference("loc", LineInfo->getLabelID()); 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");
+ EmitInt8(DW_LNS_set_file); EOL("DW_LNS_set_file");
+ EmitULEB128Bytes(Source); EOL("New Source");
}
// If change of line.
// If delta is small enough and in range...
if (Delta >= 0 && Delta < (MaxLineDelta - 1)) {
// ... then use fast opcode.
- EmitByte(Delta - MinLineDelta); EOL("Line Delta");
+ EmitInt8(Delta - MinLineDelta); EOL("Line Delta");
} else {
// ... otherwise use long hand.
- EmitByte(DW_LNS_advance_line); EOL("DW_LNS_advance_line");
+ EmitInt8(DW_LNS_advance_line); EOL("DW_LNS_advance_line");
EmitSLEB128Bytes(Offset); EOL("Line Offset");
- EmitByte(DW_LNS_copy); EOL("DW_LNS_copy");
+ EmitInt8(DW_LNS_copy); EOL("DW_LNS_copy");
}
} else {
// Copy the previous row (different address or source)
- EmitByte(DW_LNS_copy); EOL("DW_LNS_copy");
+ EmitInt8(DW_LNS_copy); EOL("DW_LNS_copy");
}
}
+ // Define last address.
+ EmitInt8(0); EOL("Extended Op");
+ EmitInt8(4 + 1); EOL("Op size");
+ EmitInt8(DW_LNE_set_address); EOL("DW_LNE_set_address");
+ EmitReference("text_end", 0); EOL("Location label");
+
// Mark end of matrix.
- EmitByte(0); EOL("DW_LNE_end_sequence");
+ EmitInt8(0); EOL("DW_LNE_end_sequence");
EmitULEB128Bytes(1); O << "\n";
- EmitByte(1); O << "\n";
+ EmitInt8(1); O << "\n";
EmitLabel("line_end", 0);
+
+ O << "\n";
}
/// EmitDebugFrame - Emit visible names into a debug frame section.
///
void DwarfWriter::EmitDebugFrame() {
- // FIXME - Should be per frame
+ // Start the dwarf pubnames section.
+ Asm->SwitchSection(DwarfFrameSection, 0);
+
+ EmitDifference("frame_common_end", 0,
+ "frame_common_begin", 0);
+ EOL("Length of Common Information Entry");
+
+ EmitLabel("frame_common_begin", 0);
+ EmitInt32(DW_CIE_ID); EOL("CIE Identifier Tag");
+ EmitInt8(DW_CIE_VERSION); EOL("CIE Version");
+ EmitString(""); EOL("CIE Augmentation");
+ EmitULEB128Bytes(1); EOL("CIE Code Alignment Factor");
+ // FIXME - needs to change based on stack direction.
+ EmitSLEB128Bytes(-sizeof(int32_t)); EOL("CIE Data Alignment Factor");
+ // FIXME - hard coded for PPC (LR).
+ EmitInt8(0x41); EOL("CIE RA Column Hardcoded (PPC LR)");
+ // FIXME - hard coded for PPC 0(SP).
+ EmitULEB128Bytes(DW_CFA_def_cfa); EOL("DW_CFA_def_cfa");
+ EmitULEB128Bytes(1); EOL("PPC Register SP");
+ EmitULEB128Bytes(0); EOL("PPC offset 0 as in 0(SP)");
+ EmitAlign(2);
+ EmitLabel("frame_common_end", 0);
+
+ O << "\n";
}
/// EmitDebugPubNames - Emit visible names into a debug pubnames section.
///
void DwarfWriter::EmitDebugPubNames() {
- // Check to see if it is worth the effort.
- if (!GlobalEntities.empty()) {
- // Start the dwarf pubnames section.
- Asm->SwitchSection(DwarfPubNamesSection, 0);
+ // Start the dwarf pubnames section.
+ Asm->SwitchSection(DwarfPubNamesSection, 0);
- EmitDifference("pubnames_end", 0, "pubnames_begin", 0);
- EOL("Length of Public Names Info");
-
- EmitLabel("pubnames_begin", 0);
-
- EmitShort(DWARF_VERSION); EOL("DWARF Version");
+ // Process each compile unit.
+ for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
+ CompileUnit *Unit = CompileUnits[i];
- EmitReference("info_begin", 0); EOL("Offset of Compilation Unit Info");
+ if (Unit->hasContent()) {
+ EmitDifference("pubnames_end", Unit->getID(),
+ "pubnames_begin", Unit->getID());
+ EOL("Length of Public Names Info");
+
+ EmitLabel("pubnames_begin", Unit->getID());
+
+ EmitInt16(DWARF_VERSION); EOL("DWARF Version");
+
+ EmitReference("info_begin", Unit->getID());
+ EOL("Offset of Compilation Unit Info");
- EmitDifference("info_end", 0, "info_begin", 0);
- EOL("Compilation Unit Length");
-
- for (std::map<std::string, DIE *>::iterator GI = GlobalEntities.begin(),
- GE = GlobalEntities.end();
- GI != GE; ++GI) {
- const std::string &Name = GI->first;
- DIE * Entity = GI->second;
+ EmitDifference("info_end", Unit->getID(), "info_begin", Unit->getID());
+ EOL("Compilation Unit Length");
- EmitLong(Entity->getOffset()); EOL("DIE offset");
- EmitString(Name); EOL("External Name");
+ std::map<std::string, DIE *> &Globals = Unit->getGlobals();
+ for (std::map<std::string, DIE *>::iterator GI = Globals.begin(),
+ GE = Globals.end();
+ GI != GE; ++GI) {
+ const std::string &Name = GI->first;
+ DIE * Entity = GI->second;
+
+ EmitInt32(Entity->getOffset()); EOL("DIE offset");
+ EmitString(Name); EOL("External Name");
+ }
+
+ EmitInt32(0); EOL("End Mark");
+ EmitLabel("pubnames_end", Unit->getID());
+
+ O << "\n";
}
-
- EmitLong(0); EOL("End Mark");
- EmitLabel("pubnames_end", 0);
- }
-}
-
-/// EmitDebugPubTypes - Emit visible names into a debug pubtypes section.
-///
-void DwarfWriter::EmitDebugPubTypes() {
- // Check to see if it is worth the effort.
- if (!GlobalTypes.empty()) {
- // Start the dwarf pubtypes section.
- Asm->SwitchSection(DwarfPubTypesSection, 0);
}
}
// Start the dwarf str section.
Asm->SwitchSection(DwarfStrSection, 0);
- // For each of strings in teh string pool.
+ // For each of strings in the string pool.
for (unsigned StringID = 1, N = StringPool.size();
StringID <= N; ++StringID) {
// Emit a label for reference from debug information entries.
const std::string &String = StringPool[StringID];
EmitString(String); O << "\n";
}
+
+ O << "\n";
}
}
void DwarfWriter::EmitDebugLoc() {
// Start the dwarf loc section.
Asm->SwitchSection(DwarfLocSection, 0);
+
+ O << "\n";
}
/// EmitDebugARanges - Emit visible names into a debug aranges section.
Asm->SwitchSection(DwarfARangesSection, 0);
// FIXME - Mock up
+#if 0
+ // Process each compile unit.
+ for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
+ CompileUnit *Unit = CompileUnits[i];
+
+ if (Unit->hasContent()) {
+ // Don't include size of length
+ EmitInt32(0x1c); EOL("Length of Address Ranges Info");
+
+ EmitInt16(DWARF_VERSION); EOL("Dwarf Version");
+
+ EmitReference("info_begin", Unit->getID());
+ EOL("Offset of Compilation Unit Info");
- // Don't include size of length
- EmitLong(0x1c); EOL("Length of Address Ranges Info");
-
- EmitShort(DWARF_VERSION); EOL("Dwarf Version");
-
- EmitReference("info_begin", 0); EOL("Offset of Compilation Unit Info");
-
- EmitByte(AddressSize); EOL("Size of Address");
+ EmitInt8(AddressSize); EOL("Size of Address");
- EmitByte(0); EOL("Size of Segment Descriptor");
+ EmitInt8(0); EOL("Size of Segment Descriptor");
- EmitShort(0); EOL("Pad (1)");
- EmitShort(0); EOL("Pad (2)");
+ EmitInt16(0); EOL("Pad (1)");
+ EmitInt16(0); EOL("Pad (2)");
- // Range 1
- EmitReference("text_begin", 0); EOL("Address");
- EmitDifference("text_end", 0, "text_begin", 0); EOL("Length");
+ // Range 1
+ EmitReference("text_begin", 0); EOL("Address");
+ EmitDifference("text_end", 0, "text_begin", 0); EOL("Length");
- EmitLong(0); EOL("EOM (1)");
- EmitLong(0); EOL("EOM (2)");
+ EmitInt32(0); EOL("EOM (1)");
+ EmitInt32(0); EOL("EOM (2)");
+
+ O << "\n";
+ }
+ }
+#endif
}
/// EmitDebugRanges - Emit visible names into a debug ranges section.
void DwarfWriter::EmitDebugRanges() {
// Start the dwarf ranges section.
Asm->SwitchSection(DwarfRangesSection, 0);
+
+ O << "\n";
}
/// EmitDebugMacInfo - Emit visible names into a debug macinfo section.
void DwarfWriter::EmitDebugMacInfo() {
// Start the dwarf macinfo section.
Asm->SwitchSection(DwarfMacInfoSection, 0);
+
+ O << "\n";
}
/// ConstructCompileUnitDIEs - Create a compile unit DIE for each source and
/// header file.
void DwarfWriter::ConstructCompileUnitDIEs() {
- const UniqueVector<CompileUnitWrapper> CUW = DebugInfo->getCompileUnits();
+ const UniqueVector<CompileUnitDesc *> CUW = DebugInfo->getCompileUnits();
for (unsigned i = 1, N = CUW.size(); i <= N; ++i) {
- const CompileUnitWrapper &CompileUnit = CUW[i];
- DIE *Unit = NewCompileUnit(CompileUnit);
- DWContext *Context = new DWContext(*this, NULL, Unit);
+ CompileUnit *Unit = NewCompileUnit(CUW[i], i);
CompileUnits.push_back(Unit);
}
}
/// ConstructGlobalDIEs - Create DIEs for each of the externally visible global
/// variables.
-void DwarfWriter::ConstructGlobalDIEs(Module &M) {
- const TargetData &TD = Asm->TM.getTargetData();
-
- std::vector<GlobalWrapper> GlobalVariables = DebugInfo->getGlobalVariables(M);
+void DwarfWriter::ConstructGlobalDIEs() {
+ std::vector<GlobalVariableDesc *> GlobalVariables =
+ DebugInfo->getAnchoredDescriptors<GlobalVariableDesc>(*M);
for (unsigned i = 0, N = GlobalVariables.size(); i < N; ++i) {
- GlobalWrapper &GW = GlobalVariables[i];
- GlobalVariable *GV = GW.getGlobalVariable();
-
- if (!GV->hasInitializer()) continue; // External global require no code
-
- // FIXME - Use global info type information when available.
- std::string Name = Asm->Mang->getValueName(GV);
- Constant *C = GV->getInitializer();
- const Type *Ty = C->getType();
- unsigned Size = TD.getTypeSize(Ty);
- unsigned Align = TD.getTypeAlignmentShift(Ty);
-
- if (C->isNullValue() && /* FIXME: Verify correct */
- (GV->hasInternalLinkage() || GV->hasWeakLinkage() ||
- GV->hasLinkOnceLinkage())) {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
- }
-
- /// FIXME - Get correct compile unit context.
- assert(CompileUnits.size() && "No compile units");
- DWContext *Context = CompileUnits[0]->getContext();
-
- /// Create new global.
- NewGlobalVariable(Context, GV->getName(), Name, Ty, Size, Align);
+ GlobalVariableDesc *GVD = GlobalVariables[i];
+ NewGlobalVariable(GVD);
}
}
+/// ConstructSubprogramDIEs - Create DIEs for each of the externally visible
+/// subprograms.
+void DwarfWriter::ConstructSubprogramDIEs() {
+ std::vector<SubprogramDesc *> Subprograms =
+ DebugInfo->getAnchoredDescriptors<SubprogramDesc>(*M);
+
+ for (unsigned i = 0, N = Subprograms.size(); i < N; ++i) {
+ SubprogramDesc *SPD = Subprograms[i];
+ NewSubprogram(SPD);
+ }
+}
/// ShouldEmitDwarf - Determine if Dwarf declarations should be made.
///
// Make sure initial declarations are made.
if (!didInitial) {
EmitInitial();
+
+ // Create all the compile unit DIEs.
+ ConstructCompileUnitDIEs();
+
+ // Create DIEs for each of the externally visible global variables.
+ ConstructGlobalDIEs();
+
+ // Create DIEs for each of the externally visible subprograms.
+ ConstructSubprogramDIEs();
+
didInitial = true;
}
DwarfWriter::DwarfWriter(std::ostream &OS, AsmPrinter *A)
: O(OS)
, Asm(A)
+, M(NULL)
+, MF(NULL)
, DebugInfo(NULL)
, didInitial(false)
+, SubprogramCount(0)
, CompileUnits()
, Abbreviations()
-, GlobalTypes()
-, GlobalEntities()
, StringPool()
+, DescToUnitMap()
+, DescToDieMap()
+, TypeToDieMap()
, AddressSize(sizeof(int32_t))
, hasLEB128(false)
, hasDotLoc(false)
/// BeginModule - Emit all Dwarf sections that should come prior to the content.
///
-void DwarfWriter::BeginModule(Module &M) {
+void DwarfWriter::BeginModule(Module *M) {
+ this->M = M;
+
if (!ShouldEmitDwarf()) return;
EOL("Dwarf Begin Module");
}
/// EndModule - Emit all Dwarf sections that should come after the content.
///
-void DwarfWriter::EndModule(Module &M) {
+void DwarfWriter::EndModule() {
if (!ShouldEmitDwarf()) return;
EOL("Dwarf End Module");
Asm->SwitchSection(DataSection, 0);
EmitLabel("data_end", 0);
- // Create all the compile unit DIEs.
- ConstructCompileUnitDIEs();
-
- // Create DIEs for each of the externally visible global variables.
- ConstructGlobalDIEs(M);
-
// Compute DIE offsets and sizes.
SizeAndOffsets();
// Emit info into a debug pubnames section.
EmitDebugPubNames();
- // Emit info into a debug pubtypes section.
- EmitDebugPubTypes();
-
// Emit info into a debug str section.
EmitDebugStr();
/// BeginFunction - Gather pre-function debug information.
///
-void DwarfWriter::BeginFunction(MachineFunction &MF) {
+void DwarfWriter::BeginFunction(MachineFunction *MF) {
+ this->MF = MF;
+
if (!ShouldEmitDwarf()) return;
EOL("Dwarf Begin Function");
+
+ // Define begin label for subprogram.
+ Asm->SwitchSection(TextSection, 0);
+ EmitLabel("func_begin", ++SubprogramCount);
}
+
/// EndFunction - Gather and emit post-function debug information.
///
-void DwarfWriter::EndFunction(MachineFunction &MF) {
+void DwarfWriter::EndFunction() {
if (!ShouldEmitDwarf()) return;
EOL("Dwarf End Function");
+
+ // Define end label for subprogram.
+ Asm->SwitchSection(TextSection, 0);
+ EmitLabel("func_end", SubprogramCount);
+
+ // Construct scopes for subprogram.
+ ConstructRootScope(DebugInfo->getRootScope());
+ DebugInfo->ClearScopes();
}
projects / oota-llvm.git / blobdiff