//
// The LLVM Compiler Infrastructure
//
-// This file was developed by James M. Laskey and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
-// This file contains support for writing Dwarf debug info into asm files. For
-// Details on the Dwarf 3 specfication see DWARF Debugging Information Format
-// V.3 reference manual http://dwarf.freestandards.org ,
+// This file contains support for writing Dwarf debug and exception info into
+// asm files. For Details on the Dwarf 3 specfication see DWARF Debugging
+// Information Format V.3 reference manual http://dwarf.freestandards.org ,
//
-// The role of the Dwarf Writer class is to extract debug information from the
-// MachineDebugInfo object, organize it in Dwarf form and then emit it into asm
+// The role of the Dwarf Writer class is to extract information from the
+// MachineModuleInfo object, organize it in Dwarf form and then emit it into asm
// the current asm file using data and high level Dwarf directives.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_DWARFWRITER_H
#define LLVM_CODEGEN_DWARFWRITER_H
-#include "llvm/ADT/UniqueVector.h"
-
-#include <iosfwd>
-#include <string>
-
+#include "llvm/Pass.h"
+#include "llvm/Target/TargetMachine.h"
namespace llvm {
- //===--------------------------------------------------------------------===//
- // Dwarf constants as gleaned from the DWARF Debugging Information Format V.3
- // reference manual http://dwarf.freestandards.org .
- //
- enum dwarf_constants {
- DWARF_VERSION = 2,
-
- // Tags
- DW_TAG_array_type = 0x01,
- DW_TAG_class_type = 0x02,
- DW_TAG_entry_point = 0x03,
- DW_TAG_enumeration_type = 0x04,
- DW_TAG_formal_parameter = 0x05,
- DW_TAG_imported_declaration = 0x08,
- DW_TAG_label = 0x0a,
- DW_TAG_lexical_block = 0x0b,
- DW_TAG_member = 0x0d,
- DW_TAG_pointer_type = 0x0f,
- DW_TAG_reference_type = 0x10,
- DW_TAG_compile_unit = 0x11,
- DW_TAG_string_type = 0x12,
- DW_TAG_structure_type = 0x13,
- DW_TAG_subroutine_type = 0x15,
- DW_TAG_typedef = 0x16,
- DW_TAG_union_type = 0x17,
- DW_TAG_unspecified_parameters = 0x18,
- DW_TAG_variant = 0x19,
- DW_TAG_common_block = 0x1a,
- DW_TAG_common_inclusion = 0x1b,
- DW_TAG_inheritance = 0x1c,
- DW_TAG_inlined_subroutine = 0x1d,
- DW_TAG_module = 0x1e,
- DW_TAG_ptr_to_member_type = 0x1f,
- DW_TAG_set_type = 0x20,
- DW_TAG_subrange_type = 0x21,
- DW_TAG_with_stmt = 0x22,
- DW_TAG_access_declaration = 0x23,
- DW_TAG_base_type = 0x24,
- DW_TAG_catch_block = 0x25,
- DW_TAG_const_type = 0x26,
- DW_TAG_constant = 0x27,
- DW_TAG_enumerator = 0x28,
- DW_TAG_file_type = 0x29,
- DW_TAG_friend = 0x2a,
- DW_TAG_namelist = 0x2b,
- DW_TAG_namelist_item = 0x2c,
- DW_TAG_packed_type = 0x2d,
- DW_TAG_subprogram = 0x2e,
- DW_TAG_template_type_parameter = 0x2f,
- DW_TAG_template_value_parameter = 0x30,
- DW_TAG_thrown_type = 0x31,
- DW_TAG_try_block = 0x32,
- DW_TAG_variant_part = 0x33,
- DW_TAG_variable = 0x34,
- DW_TAG_volatile_type = 0x35,
- DW_TAG_dwarf_procedure = 0x36,
- DW_TAG_restrict_type = 0x37,
- DW_TAG_interface_type = 0x38,
- DW_TAG_namespace = 0x39,
- DW_TAG_imported_module = 0x3a,
- DW_TAG_unspecified_type = 0x3b,
- DW_TAG_partial_unit = 0x3c,
- DW_TAG_imported_unit = 0x3d,
- DW_TAG_condition = 0x3f,
- DW_TAG_shared_type = 0x40,
- DW_TAG_lo_user = 0x4080,
- DW_TAG_hi_user = 0xffff,
-
- // Children flag
- DW_CHILDREN_no = 0x00,
- DW_CHILDREN_yes = 0x01,
-
- // Attributes
- DW_AT_sibling = 0x01,
- DW_AT_location = 0x02,
- DW_AT_name = 0x03,
- DW_AT_ordering = 0x09,
- DW_AT_byte_size = 0x0b,
- DW_AT_bit_offset = 0x0c,
- DW_AT_bit_size = 0x0d,
- DW_AT_stmt_list = 0x10,
- DW_AT_low_pc = 0x11,
- DW_AT_high_pc = 0x12,
- DW_AT_language = 0x13,
- DW_AT_discr = 0x15,
- DW_AT_discr_value = 0x16,
- DW_AT_visibility = 0x17,
- DW_AT_import = 0x18,
- DW_AT_string_length = 0x19,
- DW_AT_common_reference = 0x1a,
- DW_AT_comp_dir = 0x1b,
- DW_AT_const_value = 0x1c,
- DW_AT_containing_type = 0x1d,
- DW_AT_default_value = 0x1e,
- DW_AT_inline = 0x20,
- DW_AT_is_optional = 0x21,
- DW_AT_lower_bound = 0x22,
- DW_AT_producer = 0x25,
- DW_AT_prototyped = 0x27,
- DW_AT_return_addr = 0x2a,
- DW_AT_start_scope = 0x2c,
- DW_AT_bit_stride = 0x2e,
- DW_AT_upper_bound = 0x2f,
- DW_AT_abstract_origin = 0x31,
- DW_AT_accessibility = 0x32,
- DW_AT_address_class = 0x33,
- DW_AT_artificial = 0x34,
- DW_AT_base_types = 0x35,
- DW_AT_calling_convention = 0x36,
- DW_AT_count = 0x37,
- DW_AT_data_member_location = 0x38,
- DW_AT_decl_column = 0x39,
- DW_AT_decl_file = 0x3a,
- DW_AT_decl_line = 0x3b,
- DW_AT_declaration = 0x3c,
- DW_AT_discr_list = 0x3d,
- DW_AT_encoding = 0x3e,
- DW_AT_external = 0x3f,
- DW_AT_frame_base = 0x40,
- DW_AT_friend = 0x41,
- DW_AT_identifier_case = 0x42,
- DW_AT_macro_info = 0x43,
- DW_AT_namelist_item = 0x44,
- DW_AT_priority = 0x45,
- DW_AT_segment = 0x46,
- DW_AT_specification = 0x47,
- DW_AT_static_link = 0x48,
- DW_AT_type = 0x49,
- DW_AT_use_location = 0x4a,
- DW_AT_variable_parameter = 0x4b,
- DW_AT_virtuality = 0x4c,
- DW_AT_vtable_elem_location = 0x4d,
- DW_AT_allocated = 0x4e,
- DW_AT_associated = 0x4f,
- DW_AT_data_location = 0x50,
- DW_AT_byte_stride = 0x51,
- DW_AT_entry_pc = 0x52,
- DW_AT_use_UTF8 = 0x53,
- DW_AT_extension = 0x54,
- DW_AT_ranges = 0x55,
- DW_AT_trampoline = 0x56,
- DW_AT_call_column = 0x57,
- DW_AT_call_file = 0x58,
- DW_AT_call_line = 0x59,
- DW_AT_description = 0x5a,
- DW_AT_binary_scale = 0x5b,
- DW_AT_decimal_scale = 0x5c,
- DW_AT_small = 0x5d,
- DW_AT_decimal_sign = 0x5e,
- DW_AT_digit_count = 0x5f,
- DW_AT_picture_string = 0x60,
- DW_AT_mutable = 0x61,
- DW_AT_threads_scaled = 0x62,
- DW_AT_explicit = 0x63,
- DW_AT_object_pointer = 0x64,
- DW_AT_endianity = 0x65,
- DW_AT_elemental = 0x66,
- DW_AT_pure = 0x67,
- DW_AT_recursive = 0x68,
- DW_AT_lo_user = 0x2000,
- DW_AT_hi_user = 0x3fff,
-
- // Attribute form encodings
- DW_FORM_addr = 0x01,
- DW_FORM_block2 = 0x03,
- DW_FORM_block4 = 0x04,
- DW_FORM_data2 = 0x05,
- DW_FORM_data4 = 0x06,
- DW_FORM_data8 = 0x07,
- DW_FORM_string = 0x08,
- DW_FORM_block = 0x09,
- DW_FORM_block1 = 0x0a,
- DW_FORM_data1 = 0x0b,
- DW_FORM_flag = 0x0c,
- DW_FORM_sdata = 0x0d,
- DW_FORM_strp = 0x0e,
- DW_FORM_udata = 0x0f,
- DW_FORM_ref_addr = 0x10,
- DW_FORM_ref1 = 0x11,
- DW_FORM_ref2 = 0x12,
- DW_FORM_ref4 = 0x13,
- DW_FORM_ref8 = 0x14,
- DW_FORM_ref_udata = 0x15,
- DW_FORM_indirect = 0x16,
-
- // Operation encodings
- DW_OP_addr = 0x03,
- DW_OP_deref = 0x06,
- DW_OP_const1u = 0x08,
- DW_OP_const1s = 0x09,
- DW_OP_const2u = 0x0a,
- DW_OP_const2s = 0x0b,
- DW_OP_const4u = 0x0c,
- DW_OP_const4s = 0x0d,
- DW_OP_const8u = 0x0e,
- DW_OP_const8s = 0x0f,
- DW_OP_constu = 0x10,
- DW_OP_consts = 0x11,
- DW_OP_dup = 0x12,
- DW_OP_drop = 0x13,
- DW_OP_over = 0x14,
- DW_OP_pick = 0x15,
- DW_OP_swap = 0x16,
- DW_OP_rot = 0x17,
- DW_OP_xderef = 0x18,
- DW_OP_abs = 0x19,
- DW_OP_and = 0x1a,
- DW_OP_div = 0x1b,
- DW_OP_minus = 0x1c,
- DW_OP_mod = 0x1d,
- DW_OP_mul = 0x1e,
- DW_OP_neg = 0x1f,
- DW_OP_not = 0x20,
- DW_OP_or = 0x21,
- DW_OP_plus = 0x22,
- DW_OP_plus_uconst = 0x23,
- DW_OP_shl = 0x24,
- DW_OP_shr = 0x25,
- DW_OP_shra = 0x26,
- DW_OP_xor = 0x27,
- DW_OP_skip = 0x2f,
- DW_OP_bra = 0x28,
- DW_OP_eq = 0x29,
- DW_OP_ge = 0x2a,
- DW_OP_gt = 0x2b,
- DW_OP_le = 0x2c,
- DW_OP_lt = 0x2d,
- DW_OP_ne = 0x2e,
- DW_OP_lit0 = 0x30,
- DW_OP_lit1 = 0x31,
- DW_OP_lit31 = 0x4f,
- DW_OP_reg0 = 0x50,
- DW_OP_reg1 = 0x51,
- DW_OP_reg31 = 0x6f,
- DW_OP_breg0 = 0x70,
- DW_OP_breg1 = 0x71,
- DW_OP_breg31 = 0x8f,
- DW_OP_regx = 0x90,
- DW_OP_fbreg = 0x91,
- DW_OP_bregx = 0x92,
- DW_OP_piece = 0x93,
- DW_OP_deref_size = 0x94,
- DW_OP_xderef_size = 0x95,
- DW_OP_nop = 0x96,
- DW_OP_push_object_address = 0x97,
- DW_OP_call2 = 0x98,
- DW_OP_call4 = 0x99,
- DW_OP_call_ref = 0x9a,
- DW_OP_form_tls_address = 0x9b,
- DW_OP_call_frame_cfa = 0x9c,
- DW_OP_lo_user = 0xe0,
- DW_OP_hi_user = 0xff,
-
- // Encoding attribute values
- DW_ATE_address = 0x01,
- DW_ATE_boolean = 0x02,
- DW_ATE_complex_float = 0x03,
- DW_ATE_float = 0x04,
- DW_ATE_signed = 0x05,
- DW_ATE_signed_char = 0x06,
- DW_ATE_unsigned = 0x07,
- DW_ATE_unsigned_char = 0x08,
- DW_ATE_imaginary_float = 0x09,
- DW_ATE_packed_decimal = 0x0a,
- DW_ATE_numeric_string = 0x0b,
- DW_ATE_edited = 0x0c,
- DW_ATE_signed_fixed = 0x0d,
- DW_ATE_unsigned_fixed = 0x0e,
- DW_ATE_decimal_float = 0x0f,
- DW_ATE_lo_user = 0x80,
- DW_ATE_hi_user = 0xff,
-
- // Decimal sign attribute values
- DW_DS_unsigned = 0x01,
- DW_DS_leading_overpunch = 0x02,
- DW_DS_trailing_overpunch = 0x03,
- DW_DS_leading_separate = 0x04,
- DW_DS_trailing_separate = 0x05,
-
- // Endianity attribute values
- DW_END_default = 0x00,
- DW_END_big = 0x01,
- DW_END_little = 0x02,
- DW_END_lo_user = 0x40,
- DW_END_hi_user = 0xff,
-
- // Accessibility codes
- DW_ACCESS_public = 0x01,
- DW_ACCESS_protected = 0x02,
- DW_ACCESS_private = 0x03,
+class AsmPrinter;
+class DwarfDebug;
+class DwarfException;
+class MachineModuleInfo;
+class MachineFunction;
+class MachineInstr;
+class Value;
+class Module;
+class MDNode;
+class MCAsmInfo;
+class raw_ostream;
+class Instruction;
+class DICompileUnit;
+class DISubprogram;
+class DIVariable;
- // Visibility codes
- DW_VIS_local = 0x01,
- DW_VIS_exported = 0x02,
- DW_VIS_qualified = 0x03,
-
- // Virtuality codes
- DW_VIRTUALITY_none = 0x00,
- DW_VIRTUALITY_virtual = 0x01,
- DW_VIRTUALITY_pure_virtual = 0x02,
-
- // Language names
- DW_LANG_C89 = 0x0001,
- DW_LANG_C = 0x0002,
- DW_LANG_Ada83 = 0x0003,
- DW_LANG_C_plus_plus = 0x0004,
- DW_LANG_Cobol74 = 0x0005,
- DW_LANG_Cobol85 = 0x0006,
- DW_LANG_Fortran77 = 0x0007,
- DW_LANG_Fortran90 = 0x0008,
- DW_LANG_Pascal83 = 0x0009,
- DW_LANG_Modula2 = 0x000a,
- DW_LANG_Java = 0x000b,
- DW_LANG_C99 = 0x000c,
- DW_LANG_Ada95 = 0x000d,
- DW_LANG_Fortran95 = 0x000e,
- DW_LANG_PLI = 0x000f,
- DW_LANG_ObjC = 0x0010,
- DW_LANG_ObjC_plus_plus = 0x0011,
- DW_LANG_UPC = 0x0012,
- DW_LANG_D = 0x0013,
- DW_LANG_lo_user = 0x8000,
- DW_LANG_hi_user = 0xffff,
-
- // Identifier case codes
- DW_ID_case_sensitive = 0x00,
- DW_ID_up_case = 0x01,
- DW_ID_down_case = 0x02,
- DW_ID_case_insensitive = 0x03,
-
- // Calling convention codes
- DW_CC_normal = 0x01,
- DW_CC_program = 0x02,
- DW_CC_nocall = 0x03,
- DW_CC_lo_user = 0x40,
- DW_CC_hi_user = 0xff,
-
- // Inline codes
- DW_INL_not_inlined = 0x00,
- DW_INL_inlined = 0x01,
- DW_INL_declared_not_inlined = 0x02,
- DW_INL_declared_inlined = 0x03,
-
- // Array ordering
- DW_ORD_row_major = 0x00,
- DW_ORD_col_major = 0x01,
+//===----------------------------------------------------------------------===//
+// DwarfWriter - Emits Dwarf debug and exception handling directives.
+//
- // Discriminant descriptor values
- DW_DSC_label = 0x00,
- DW_DSC_range = 0x01,
+class DwarfWriter : public ImmutablePass {
+private:
+ /// DD - Provides the DwarfWriter debug implementation.
+ ///
+ DwarfDebug *DD;
- // Line Number Standard Opcode Encodings
- DW_LNS_copy = 0x01,
- DW_LNS_advance_pc = 0x02,
- DW_LNS_advance_line = 0x03,
- DW_LNS_set_file = 0x04,
- DW_LNS_set_column = 0x05,
- DW_LNS_negate_stmt = 0x06,
- DW_LNS_set_basic_block = 0x07,
- DW_LNS_const_add_pc = 0x08,
- DW_LNS_fixed_advance_pc = 0x09,
- DW_LNS_set_prologue_end = 0x0a,
- DW_LNS_set_epilogue_begin = 0x0b,
- DW_LNS_set_isa = 0x0c,
+ /// DE - Provides the DwarfWriter exception implementation.
+ ///
+ DwarfException *DE;
- // Line Number Extended Opcode Encodings
- DW_LNE_end_sequence = 0x01,
- DW_LNE_set_address = 0x02,
- DW_LNE_define_file = 0x03,
- DW_LNE_lo_user = 0x80,
- DW_LNE_hi_user = 0xff,
+public:
+ static char ID; // Pass identification, replacement for typeid
- // Macinfo Type Encodings
- DW_MACINFO_define = 0x01,
- DW_MACINFO_undef = 0x02,
- DW_MACINFO_start_file = 0x03,
- DW_MACINFO_end_file = 0x04,
- DW_MACINFO_vendor_ext = 0xff,
+ DwarfWriter();
+ virtual ~DwarfWriter();
- // Call frame instruction encodings
- DW_CFA_advance_loc = 0x40,
- DW_CFA_offset = 0x80,
- DW_CFA_restore = 0xc0,
- DW_CFA_set_loc = 0x01,
- DW_CFA_advance_loc1 = 0x02,
- DW_CFA_advance_loc2 = 0x03,
- DW_CFA_advance_loc4 = 0x04,
- DW_CFA_offset_extended = 0x05,
- DW_CFA_restore_extended = 0x06,
- DW_CFA_undefined = 0x07,
- DW_CFA_same_value = 0x08,
- DW_CFA_register = 0x09,
- DW_CFA_remember_state = 0x0a,
- DW_CFA_restore_state = 0x0b,
- DW_CFA_def_cfa = 0x0c,
- DW_CFA_def_cfa_register = 0x0d,
- DW_CFA_def_cfa_offset = 0x0e,
- DW_CFA_def_cfa_expression = 0x0f,
- DW_CFA_expression = 0x10,
- DW_CFA_offset_extended_sf = 0x11,
- DW_CFA_def_cfa_sf = 0x12,
- DW_CFA_def_cfa_offset_sf = 0x13,
- DW_CFA_val_offset = 0x14,
- DW_CFA_val_offset_sf = 0x15,
- DW_CFA_val_expression = 0x16,
- DW_CFA_lo_user = 0x1c,
- DW_CFA_hi_user = 0x3f
- };
-
//===--------------------------------------------------------------------===//
- // Forward declarations.
+ // Main entry points.
//
- class AsmPrinter;
- class DIE;
- class DwarfWriter;
- class DWContext;
- class MachineDebugInfo;
- class MachineFunction;
- class Module;
- class Type;
- //===--------------------------------------------------------------------===//
- // DWLabel - Labels are used to track locations in the assembler file.
- // Labels appear in the form <prefix>debug_<Tag><Number>, where the tag is a
- // category of label (Ex. location) and number is a value unique in that
- // category.
- class DWLabel {
- public:
- const char *Tag; // Label category tag. Should always be
- // a staticly declared C string.
- unsigned Number; // Unique number.
-
- DWLabel(const char *T, unsigned N) : Tag(T), Number(N) {}
- };
-
- //===--------------------------------------------------------------------===//
- // 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;
- }
-
- /// operator!= - Used by DIEAbbrev to locate entry.
- ///
- bool operator!=(const DIEAbbrevData &DAD) const {
- return Attribute != DAD.Attribute || Form != DAD.Form;
- }
-
- /// operator< - Used by DIEAbbrev to locate entry.
- ///
- bool operator<(const DIEAbbrevData &DAD) const {
- return Attribute < DAD.Attribute ||
- (Attribute == DAD.Attribute && Form < DAD.Form);
- }
- };
-
- //===--------------------------------------------------------------------===//
- // 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; }
-
- /// 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));
- }
-
- /// 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
- };
-
- //===--------------------------------------------------------------------===//
- // DIEValue - A debug information entry value.
- //
- class DIEValue {
- public:
- enum {
- isInteger,
- isString,
- isLabel,
- isAsIsLabel,
- isDelta,
- isEntry
- };
-
- 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;
- };
-
- //===--------------------------------------------------------------------===//
- // DWInteger - An integer value DIE.
- //
- class DIEInteger : public DIEValue {
- private:
- int Integer;
-
- public:
- DIEInteger(int I) : DIEValue(isInteger), Integer(I) {}
-
- // Implement isa/cast/dyncast.
- static bool classof(const DIEInteger *) { return true; }
- static bool classof(const DIEValue *I) { return I->Type == isInteger; }
-
- /// 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;
- };
-
- //===--------------------------------------------------------------------===//
- // DIEString - A string value DIE.
- //
- struct DIEString : public DIEValue {
- const std::string String;
-
- DIEString(const std::string &S) : DIEValue(isString), String(S) {}
-
- // 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;
- };
-
- //===--------------------------------------------------------------------===//
- // DIEDwarfLabel - A Dwarf internal label expression DIE.
- //
- struct DIEDwarfLabel : public DIEValue {
- const DWLabel Label;
-
- DIEDwarfLabel(const DWLabel &L) : DIEValue(isLabel), Label(L) {}
-
- // 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;
- };
+ /// BeginModule - Emit all Dwarf sections that should come prior to the
+ /// content.
+ void BeginModule(Module *M, MachineModuleInfo *MMI, raw_ostream &OS,
+ AsmPrinter *A, const MCAsmInfo *T);
- //===--------------------------------------------------------------------===//
- // 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 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;
- };
+ /// EndModule - Emit all Dwarf sections that should come after the content.
+ ///
+ void EndModule();
- //===--------------------------------------------------------------------===//
- // 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.
- DWContext *Context; // Context for types and values.
- std::vector<DIE *> Children; // Children DIEs.
- std::vector<DIEValue *> Values; // Attributes values.
-
- public:
- DIE(unsigned Tag, unsigned ChildrenFlag);
- ~DIE();
-
- // Accessors
- unsigned getAbbrevID() const { return AbbrevID; }
- unsigned getOffset() const { return Offset; }
- unsigned getSize() const { return Size; }
- DWContext *getContext() const { return Context; }
- 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; }
- void setContext(DWContext *C) { Context = C; }
-
- /// SiblingOffset - Return the offset of the debug information entry's
- /// sibling.
- unsigned SiblingOffset() const { return Offset + Size; }
-
- /// AddInt - Add a simple integer attribute data and value.
- ///
- void AddInt(unsigned Attribute, unsigned Form,
- int Integer, bool IsSigned = false);
-
- /// 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);
-
- /// 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);
- };
+ /// BeginFunction - Gather pre-function debug information. Assumes being
+ /// emitted immediately after the function entry point.
+ void BeginFunction(const MachineFunction *MF);
- //===--------------------------------------------------------------------===//
- /// DWContext - Name context for types and values.
+ /// EndFunction - Gather and emit post-function debug information.
///
- class DWContext {
- private:
- DwarfWriter &DW; // DwarfWriter for global information.
- DWContext *Parent; // Next context level searched.
- DIE *Owner; // Owning debug information entry.
- std::map<const Type *, DIE*> Types; // Named types in context.
- std::map<std::string, DIE*> Variables;// Named variables in context.
-
- public:
- DWContext(DwarfWriter &D, DWContext *P, DIE *O)
- : DW(D)
- , Parent(P)
- , Owner(O)
- , Types()
- , Variables()
- {
- Owner->setContext(this);
- }
- ~DWContext() {}
-
- /// NewBasicType - Creates a new basic type, if necessary, then adds to the
- /// context and owner.
- DIE *NewBasicType(const Type *Ty, unsigned Size, unsigned Align);
-
- /// NewVariable - Creates a basic variable, if necessary, then adds to the
- /// context and owner.
- DIE *NewGlobalVariable(const std::string &Name,
- const std::string &MangledName,
- DIE *Type);
- };
-
- //===--------------------------------------------------------------------===//
- // DwarfWriter - Emits Dwarf debug and exception handling directives.
- //
- class DwarfWriter {
- protected:
-
- //===------------------------------------------------------------------===//
- // Core attributes used by the Dwarf writer.
- //
-
- //
- /// O - Stream to .s file.
- ///
- std::ostream &O;
-
- /// Asm - Target of Dwarf emission.
- ///
- AsmPrinter *Asm;
-
- /// DebugInfo - Collected debug information.
- ///
- MachineDebugInfo *DebugInfo;
-
- /// didInitial - Flag to indicate if initial emission has been done.
- ///
- bool didInitial;
-
- //===------------------------------------------------------------------===//
- // Attributes used to construct specific Dwarf sections.
- //
-
- /// CompileUnits - All the compile units involved in this build. The index
- /// of each entry in this vector corresponds to the sources in DebugInfo.
- std::vector<DIE *> CompileUnits;
+ void EndFunction(const MachineFunction *MF);
- /// Abbreviations - A UniqueVector of TAG structure abbreviations.
- ///
- UniqueVector<DIEAbbrev> Abbreviations;
-
- /// GlobalTypes - A map of globally visible named types.
- ///
- std::map<std::string, DIE *> GlobalTypes;
-
- /// GlobalEntities - A map of globally visible named entities.
- ///
- std::map<std::string, DIE *> GlobalEntities;
-
- /// StringPool - A UniqueVector of strings used by indirect references.
- ///
- UniqueVector<std::string> StringPool;
-
- //===------------------------------------------------------------------===//
- // Properties to be set by the derived class ctor, used to configure the
- // Dwarf writer.
- //
-
- /// AddressSize - Size of addresses used in file.
- ///
- unsigned AddressSize;
+ /// RecordSourceLine - Register a source line with debug info. Returns a
+ /// unique label ID used to generate a label and provide correspondence to
+ /// the source line list.
+ unsigned RecordSourceLine(unsigned Line, unsigned Col, MDNode *Scope);
- /// hasLEB128 - True if target asm supports leb128 directives.
- ///
- bool hasLEB128; /// Defaults to false.
-
- /// hasDotLoc - True if target asm supports .loc directives.
- ///
- bool hasDotLoc; /// Defaults to false.
-
- /// hasDotFile - True if target asm supports .file directives.
- ///
- bool hasDotFile; /// Defaults to false.
-
- /// needsSet - True if target asm can't compute addresses on data
- /// directives.
- bool needsSet; /// Defaults to false.
-
- /// DwarfAbbrevSection - Section directive for Dwarf abbrev.
- ///
- const char *DwarfAbbrevSection; /// Defaults to ".debug_abbrev".
+ /// getRecordSourceLineCount - Count source lines.
+ unsigned getRecordSourceLineCount();
- /// DwarfInfoSection - Section directive for Dwarf info.
- ///
- const char *DwarfInfoSection; /// Defaults to ".debug_info".
-
- /// DwarfLineSection - Section directive for Dwarf info.
- ///
- const char *DwarfLineSection; /// Defaults to ".debug_line".
-
- /// DwarfFrameSection - Section directive for Dwarf info.
- ///
- const char *DwarfFrameSection; /// Defaults to ".debug_frame".
-
- /// DwarfPubNamesSection - Section directive for Dwarf info.
- ///
- const char *DwarfPubNamesSection; /// Defaults to ".debug_pubnames".
-
- /// DwarfPubTypesSection - Section directive for Dwarf info.
- ///
- const char *DwarfPubTypesSection; /// Defaults to ".debug_pubtypes".
-
- /// DwarfStrSection - Section directive for Dwarf info.
- ///
- const char *DwarfStrSection; /// Defaults to ".debug_str".
-
- /// DwarfLocSection - Section directive for Dwarf info.
- ///
- const char *DwarfLocSection; /// Defaults to ".debug_loc".
-
- /// DwarfARangesSection - Section directive for Dwarf info.
- ///
- const char *DwarfARangesSection; /// Defaults to ".debug_aranges".
-
- /// DwarfRangesSection - Section directive for Dwarf info.
- ///
- const char *DwarfRangesSection; /// Defaults to ".debug_ranges".
-
- /// DwarfMacInfoSection - Section directive for Dwarf info.
- ///
- const char *DwarfMacInfoSection; /// Defaults to ".debug_macinfo".
-
- /// TextSection - Section directive for standard text.
- ///
- const char *TextSection; /// Defaults to ".text".
-
- /// DataSection - Section directive for standard data.
- ///
- const char *DataSection; /// Defaults to ".data".
-
- //===------------------------------------------------------------------===//
- // Emission and print routines
- //
-
-public:
- /// getAddressSize - Return the size of a target address in bytes.
- ///
- unsigned getAddressSize() const { return AddressSize; }
-
- /// PrintHex - Print a value as a hexidecimal value.
- ///
- void PrintHex(int Value) const;
-
- /// 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 EOL(const std::string &Comment) const;
-
- /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
- /// unsigned leb128 value.
- void EmitULEB128Bytes(unsigned Value) const;
-
- /// EmitSLEB128Bytes - print an assembler byte data directive to compose a
- /// signed leb128 value.
- void EmitSLEB128Bytes(int Value) const;
-
- /// PrintULEB128 - Print a series of hexidecimal values (separated by
- /// commas) representing an unsigned leb128 value.
- void PrintULEB128(unsigned Value) const;
-
- /// SizeULEB128 - Compute the number of bytes required for an unsigned
- /// leb128 value.
- static unsigned SizeULEB128(unsigned Value);
-
- /// PrintSLEB128 - Print a series of hexidecimal values (separated by
- /// commas) representing a signed leb128 value.
- void PrintSLEB128(int Value) const;
-
- /// SizeSLEB128 - Compute the number of bytes required for a signed leb128
- /// value.
- static unsigned SizeSLEB128(int Value);
-
- /// EmitByte - Emit a byte directive and value.
- ///
- void EmitByte(int Value) const;
-
- /// EmitShort - Emit a short directive and value.
- ///
- void EmitShort(int Value) const;
-
- /// EmitLong - Emit a long directive and value.
- ///
- void EmitLong(int Value) const;
-
- /// EmitString - Emit a string with quotes and a null terminator.
- /// Special characters are emitted properly. (Eg. '\t')
- void EmitString(const std::string &String) const;
-
- /// PrintLabelName - Print label name in form used by Dwarf writer.
- ///
- void PrintLabelName(DWLabel Label) const {
- PrintLabelName(Label.Tag, Label.Number);
- }
- void PrintLabelName(const char *Tag, unsigned Number) const;
-
- /// EmitLabel - Emit location label for internal use by Dwarf.
- ///
- void EmitLabel(DWLabel Label) const {
- EmitLabel(Label.Tag, Label.Number);
- }
- void EmitLabel(const char *Tag, unsigned Number) const;
-
- /// EmitReference - Emit a reference to a label.
- ///
- void EmitReference(DWLabel Label) const {
- EmitReference(Label.Tag, Label.Number);
- }
- void EmitReference(const char *Tag, unsigned Number) const;
- void EmitReference(const std::string &Name) const;
-
- /// EmitDifference - Emit the difference between two labels. Some
- /// assemblers do not behave with absolute expressions with data directives,
- /// so there is an option (needsSet) to use an intermediary set expression.
- void EmitDifference(DWLabel LabelHi, DWLabel LabelLo) const {
- EmitDifference(LabelHi.Tag, LabelHi.Number, LabelLo.Tag, LabelLo.Number);
- }
- void EmitDifference(const char *TagHi, unsigned NumberHi,
- const char *TagLo, unsigned NumberLo) const;
-
- /// NewAbbreviation - Add the abbreviation to the Abbreviation vector.
- ///
- unsigned NewAbbreviation(DIEAbbrev *Abbrev);
-
- /// NewString - Add a string to the constant pool and returns a label.
- ///
- DWLabel NewString(const std::string &String);
-
- /// NewGlobalType - Make the type visible globally using the given name.
- ///
- void NewGlobalType(const std::string &Name, DIE *Type);
-
- /// NewGlobalEntity - Make the entity visible globally using the given name.
- ///
- void NewGlobalEntity(const std::string &Name, DIE *Entity);
-
- /// NewGlobalVariable - Add a new global variable DIE to the context.
- ///
- void NewGlobalVariable(DWContext *Context,
- const std::string &Name,
- const std::string &MangledName,
- const Type *Ty,
- unsigned Size, unsigned Align);
-
-private:
- /// NewCompileUnit - Create new compile unit information.
- ///
- DIE *NewCompileUnit(const std::string &Directory,
- const std::string &SourceName);
-
- /// EmitInitial - Emit initial Dwarf declarations.
- ///
- void EmitInitial() const;
-
- /// EmitDIE - Recusively Emits a debug information entry.
- ///
- void EmitDIE(DIE *Die) const;
-
- /// SizeAndOffsetDie - Compute the size and offset of a DIE.
- ///
- unsigned SizeAndOffsetDie(DIE *Die, unsigned Offset) const;
-
- /// SizeAndOffsets - Compute the size and offset of all the DIEs.
- ///
- void SizeAndOffsets();
-
- /// EmitDebugInfo - Emit the debug info section.
- ///
- void EmitDebugInfo() const;
-
- /// EmitAbbreviations - Emit the abbreviation section.
- ///
- void EmitAbbreviations() const;
-
- /// EmitDebugLines - Emit source line information.
- ///
- void EmitDebugLines() const;
-
- /// EmitDebugFrame - Emit info into a debug frame section.
- ///
- void EmitDebugFrame();
-
- /// EmitDebugPubNames - Emit info into a debug pubnames section.
- ///
- void EmitDebugPubNames();
-
- /// EmitDebugPubTypes - Emit info into a debug pubtypes section.
- ///
- void EmitDebugPubTypes();
-
- /// EmitDebugStr - Emit info into a debug str section.
- ///
- void EmitDebugStr();
-
- /// EmitDebugLoc - Emit info into a debug loc section.
- ///
- void EmitDebugLoc();
-
- /// EmitDebugARanges - Emit info into a debug aranges section.
- ///
- void EmitDebugARanges();
-
- /// EmitDebugRanges - Emit info into a debug ranges section.
- ///
- void EmitDebugRanges();
-
- /// EmitDebugMacInfo - Emit info into a debug macinfo section.
- ///
- void EmitDebugMacInfo();
-
- /// ConstructCompileUnitDIEs - Create a compile unit DIE for each source and
- /// header file.
- void ConstructCompileUnitDIEs();
-
- /// ConstructGlobalDIEs - Create DIEs for each of the externally visible global
- /// variables.
- void ConstructGlobalDIEs(Module &M);
-
- /// ShouldEmitDwarf - Returns true if Dwarf declarations should be made.
- /// When called it also checks to see if debug info is newly available. if
- /// so the initial Dwarf headers are emitted.
- bool ShouldEmitDwarf();
-
- public:
-
- DwarfWriter(std::ostream &OS, AsmPrinter *A);
- virtual ~DwarfWriter();
-
- /// SetDebugInfo - Set DebugInfo when it's known that pass manager has
- /// created it. Set by the target AsmPrinter.
- void SetDebugInfo(MachineDebugInfo *DI) { DebugInfo = DI; }
+ /// ShouldEmitDwarfDebug - Returns true if Dwarf debugging declarations should
+ /// be emitted.
+ bool ShouldEmitDwarfDebug() const;
- //===------------------------------------------------------------------===//
- // Main entry points.
- //
-
- /// BeginModule - Emit all Dwarf sections that should come prior to the
- /// content.
- void BeginModule(Module &M);
-
- /// EndModule - Emit all Dwarf sections that should come after the content.
- ///
- void EndModule(Module &M);
-
- /// BeginFunction - Gather pre-function debug information.
- ///
- void BeginFunction(MachineFunction &MF);
-
- /// EndFunction - Gather and emit post-function debug information.
- ///
- void EndFunction(MachineFunction &MF);
- };
+ void BeginScope(const MachineInstr *MI, unsigned Label);
+ void EndScope(const MachineInstr *MI);
+};
} // end llvm namespace
projects / oota-llvm.git / blobdiff