mirror of
https://github.com/Ed94/raddebugger.git
synced 2026-06-13 07:32:23 -07:00
Nikita Smith
566 lines
19 KiB
C
566 lines
19 KiB
C
// Copyright (c) Epic Games Tools
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// Licensed under the MIT license (https://opensource.org/license/mit/)
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#ifndef DWARF_PARSE_H
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#define DWARF_PARSE_H
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typedef struct DW_Section
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{
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String8 name;
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String8 data;
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B32 is_dwo;
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} DW_Section;
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typedef struct DW_Input
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{
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DW_Section sec[DW_Section_Count];
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DW_Section sup[DW_Section_Count];
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} DW_Input;
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typedef struct DW_ListUnit
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{
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DW_Version version;
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U64 address_size;
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U64 segment_selector_size;
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U64 entry_size;
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String8 entries;
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} DW_ListUnit;
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typedef struct DW_ListUnitInput
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{
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U64 addr_count;
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U64 str_offset_count;
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U64 rnglist_count;
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U64 loclist_count;
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Rng1U64Array addr_ranges;
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Rng1U64Array str_offset_ranges;
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Rng1U64Array rnglist_ranges;
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Rng1U64Array loclist_ranges;
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DW_ListUnit *addrs;
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DW_ListUnit *str_offsets;
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DW_ListUnit *rnglists;
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DW_ListUnit *loclists;
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} DW_ListUnitInput;
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typedef struct DW_AbbrevTableEntry
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{
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U64 id;
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U64 off;
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} DW_AbbrevTableEntry;
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typedef struct DW_AbbrevTable DW_AbbrevTable;
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struct DW_AbbrevTable
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{
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U64 count;
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DW_AbbrevTableEntry *entries;
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};
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typedef enum DW_AbbrevKind
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{
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DW_Abbrev_Null,
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DW_Abbrev_Tag,
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DW_Abbrev_Attrib,
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DW_Abbrev_AttribSequenceEnd,
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DW_Abbrev_DIEBegin,
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DW_Abbrev_DIEEnd,
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} DW_AbbrevKind;
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typedef U32 DW_AbbrevFlags;
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enum
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{
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DW_AbbrevFlag_HasImplicitConst = (1 << 0),
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DW_AbbrevFlag_HasChildren = (1 << 1),
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};
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typedef struct DW_Abbrev
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{
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DW_AbbrevKind kind;
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U64 sub_kind;
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U64 id;
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U64 const_value;
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DW_AbbrevFlags flags;
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} DW_Abbrev;
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typedef union DW_Form
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{
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String8 addr;
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String8 block;
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String8 data;
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String8 string;
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String8 exprloc;
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B8 flag;
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S64 sdata;
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U64 udata;
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U64 sec_offset;
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U64 ref;
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U64 strp_sup;
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U64 xval;
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U64 addrx;
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U64 strx;
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U64 rnglistx;
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U64 ptr;
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U64 implicit_const;
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} DW_Form;
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typedef struct DW_Attrib
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{
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U64 info_off;
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U64 abbrev_off;
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U64 abbrev_id;
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DW_AttribKind attrib_kind;
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DW_FormKind form_kind;
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DW_Form form;
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} DW_Attrib;
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typedef struct DW_AttribNode
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{
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struct DW_AttribNode *next;
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DW_Attrib v;
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} DW_AttribNode;
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typedef struct DW_AttribList
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{
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DW_AttribNode *first;
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DW_AttribNode *last;
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U64 count;
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} DW_AttribList;
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typedef struct DW_Tag
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{
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B32 has_children;
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U64 abbrev_id;
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DW_TagKind kind;
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DW_AttribList attribs;
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U64 info_off;
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U8 v[1];
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} DW_Tag;
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typedef struct DW_TagNode
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{
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DW_Tag tag;
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struct DW_TagNode *sibling;
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struct DW_TagNode *first_child;
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struct DW_TagNode *last_child;
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} DW_TagNode;
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typedef struct DW_Loc
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{
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Rng1U64 range;
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String8 expr;
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} DW_Loc;
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typedef struct DW_LocNode
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{
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DW_Loc v;
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struct DW_LocNode *next;
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} DW_LocNode;
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typedef struct DW_LocList
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{
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U64 count;
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DW_LocNode *first;
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DW_LocNode *last;
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} DW_LocList;
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typedef struct DW_CompUnit
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{
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B32 relaxed;
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DW_Ext ext;
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DW_CompUnitKind kind;
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DW_Version version;
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DW_Format format;
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U64 address_size;
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U64 abbrev_off;
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Rng1U64 info_range;
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U64 first_tag_info_off;
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DW_AbbrevTable abbrev_table;
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String8 abbrev_data;
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DW_ListUnit *addr_lu;
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DW_ListUnit *str_offsets_lu;
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DW_ListUnit *rnglists_lu;
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DW_ListUnit *loclists_lu;
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U64 low_pc;
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U64 dwo_id;
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DW_Tag tag;
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HashTable *tag_ht;
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} DW_CompUnit;
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typedef struct DW_TagTree
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{
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DW_TagNode *root;
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U64 tag_count;
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} DW_TagTree;
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typedef struct DW_LineFile
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{
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String8 file_name;
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U64 dir_idx;
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U64 modify_time;
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U64 file_size;
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U128 md5_digest;
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String8 source;
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} DW_LineFile;
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typedef struct DW_LineVMFileNode
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{
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struct DW_LineVMFileNode *next;
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DW_LineFile file;
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} DW_LineVMFileNode;
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typedef struct DW_LineVMFileList
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{
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U64 node_count;
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DW_LineVMFileNode *first;
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DW_LineVMFileNode *last;
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} DW_LineVMFileList;
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typedef struct DW_LineVMFileArray
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{
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U64 count;
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DW_LineFile *v;
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} DW_LineVMFileArray;
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typedef struct DW_LineVMHeader
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{
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Rng1U64 unit_range;
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DW_Version version;
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U8 address_size; // Duplicates size from the compilation unit but is needed to support stripped exe that just have .debug_line and .debug_line_str.
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U8 segment_selector_size;
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U64 header_length;
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U8 min_inst_len;
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U8 max_ops_for_inst;
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U8 default_is_stmt;
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S8 line_base;
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U8 line_range;
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U8 opcode_base;
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U64 num_opcode_lens;
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U8 *opcode_lens;
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DW_LineVMFileArray dir_table;
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DW_LineVMFileArray file_table;
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} DW_LineVMHeader;
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typedef struct DW_LineVMState
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{
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U64 address; // Address of a machine instruction.
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U32 op_index; // This is used by the VLIW instructions to indicate index of operation inside the instruction.
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// Line table doesn't contain full path to a file, instead
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// DWARF encodes path as two indices. First index will point into a directory
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// table, and second points into a file name table.
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U32 file_index;
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U32 line;
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U32 column;
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B32 is_stmt; // Indicates that "address" points to place suitable for a breakpoint.
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B32 basic_block; // Indicates that the "address" is inside a basic block.
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// Indicates that "address" points to place where function starts.
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// Usually prologue is the place where compiler emits instructions to
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// prepare stack for a function.
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B32 prologue_end;
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B32 epilogue_begin; // Indicates that "address" points to section where function exits and unwinds stack.
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U64 isa; // Instruction set that is used.
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U64 discriminator; // Arbitrary id that indicates to which block these instructions belong.
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B32 end_sequence; // Indicates that "address" points to the first instruction in the instruction block that follows.
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} DW_LineVMState;
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typedef struct DW_Line
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{
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U64 file_index;
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U32 line;
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U32 column;
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U64 address;
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} DW_Line;
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typedef struct DW_LineNode
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{
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struct DW_LineNode *next;
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DW_Line v;
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} DW_LineNode;
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typedef struct DW_LineSeqNode
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{
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struct DW_LineSeqNode *next;
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U64 count;
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DW_LineNode *first;
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DW_LineNode *last;
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} DW_LineSeqNode;
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typedef struct DW_LineTableParseResult
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{
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DW_LineVMHeader vm_header;
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U64 seq_count;
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DW_LineSeqNode *first_seq;
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DW_LineSeqNode *last_seq;
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} DW_LineTableParseResult;
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////////////////////////////////
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// .debug_pubnames and .debug_pubtypes
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typedef struct DW_PubStringsBucket
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{
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struct DW_PubStringsBucket *next;
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String8 string;
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U64 info_off;
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U64 cu_info_off;
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} DW_PubStringsBucket;
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typedef struct DW_PubStringsTable
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{
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U64 size;
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DW_PubStringsBucket **buckets;
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} DW_PubStringsTable;
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typedef struct DW_Reference
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{
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DW_CompUnit *cu;
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U64 info_off;
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} DW_Reference;
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////////////////////////////////
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//~ Expression
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typedef union DW_ExprOperand
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{
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U8 u8;
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U16 u16;
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U32 u32;
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U64 u64;
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S8 s8;
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S16 s16;
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S32 s32;
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S64 s64;
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String8 block;
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} DW_ExprOperand;
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typedef struct DW_ExprInst
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{
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DW_ExprOp opcode;
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DW_ExprOperand *operands;
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U64 size;
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struct DW_ExprInst *next;
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struct DW_ExprInst *prev;
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} DW_ExprInst;
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typedef struct DW_Expr
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{
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U64 count;
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DW_ExprInst *first;
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DW_ExprInst *last;
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} DW_Expr;
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////////////////////////////////
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// .debug_frame
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typedef enum
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{
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DW_DescriptorEntryType_Null,
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DW_DescriptorEntryType_CIE,
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DW_DescriptorEntryType_FDE
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} DW_DescriptorEntryType;
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typedef struct DW_DescriptorEntry
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{
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DW_DescriptorEntryType type;
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DW_Format format;
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Rng1U64 entry_range;
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} DW_DescriptorEntry;
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typedef struct DW_CIE
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{
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String8 insts;
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String8 aug_string;
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String8 aug_data;
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U64 code_align_factor;
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S64 data_align_factor;
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U64 ret_addr_reg;
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DW_Format format;
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U8 version;
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U8 address_size;
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U8 segment_selector_size;
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} DW_CIE;
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typedef struct DW_FDE
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{
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DW_Format format;
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U64 cie_pointer;
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Rng1U64 pc_range;
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String8 insts;
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} DW_FDE;
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typedef union DW_CFA_Operand
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{
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U64 u64;
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S64 s64;
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String8 block;
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} DW_CFA_Operand;
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typedef enum
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{
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DW_CFA_ParseErrorCode_NewInst,
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DW_CFA_ParseErrorCode_End,
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DW_CFA_ParseErrorCode_OutOfData
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} DW_CFA_ParseErrorCode;
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typedef struct DW_CFA_Inst
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{
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DW_CFA_Opcode opcode;
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DW_CFA_Operand operands[DW_CFA_OperandMax];
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} DW_CFA_Inst;
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typedef struct DW_CFA_InstNode
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{
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DW_CFA_Inst v;
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struct DW_CFA_InstNode *next;
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} DW_CFA_InstNode;
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typedef struct DW_CFA_InstList
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{
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U64 count;
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DW_CFA_InstNode *first;
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DW_CFA_InstNode *last;
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} DW_CFA_InstList;
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#define DW_DECODE_PTR(name) U64 name(String8 data, void *ud, U64 *ptr_out)
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typedef DW_DECODE_PTR(DW_DecodePtr);
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#define DW_CIE_FROM_OFFSET_FUNC(name) DW_CIE * name(void *ud, U64 offset)
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typedef DW_CIE_FROM_OFFSET_FUNC(DW_CIEFromOffsetFunc);
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// hasher
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internal U64 dw_hash_from_string(String8 string);
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// deserial helpers
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internal U64 str8_deserial_read_dwarf_packed_size(String8 string, U64 off, U64 *size_out);
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internal U64 str8_deserial_read_dwarf_uint (String8 string, U64 off, DW_Format format, U64 *uint_out);
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internal U64 str8_deserial_read_uleb128 (String8 string, U64 off, U64 *value_out);
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internal U64 str8_deserial_read_sleb128 (String8 string, U64 off, S64 *value_out);
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internal U64 str8_deserial_read_uleb128_array(Arena *arena, String8 string, U64 off, U64 count, U64 **arr_out);
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internal U64 str8_deserial_read_sleb128_array(Arena *arena, String8 string, U64 off, U64 count, S64 **arr_out);
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internal Rng1U64List dw_unit_ranges_from_data(Arena *arena, String8 data);
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// list units
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internal U64 dw_read_list_unit_header_addr (String8 unit_data, DW_ListUnit *lu_out);
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internal U64 dw_read_list_unit_header_str_offsets(String8 unit_data, DW_ListUnit *lu_out);
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internal U64 dw_read_list_unit_header_list (String8 unit_data, DW_ListUnit *lu_out);
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internal DW_ListUnitInput dw_list_unit_input_from_input(Arena *arena, DW_Input *input);
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internal U64 dw_offset_from_list_unit(DW_ListUnit *lu, U64 index);
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internal U64 dw_addr_from_list_unit (DW_ListUnit *lu, U64 index);
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// abbrev table
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internal U64 dw_read_abbrev_tag (String8 data, U64 offset, DW_Abbrev *out_abbrev);
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internal U64 dw_read_abbrev_attrib(String8 data, U64 offset, DW_Abbrev *out_abbrev);
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internal DW_AbbrevTable dw_make_abbrev_table(Arena *arena, String8 abbrev_data, U64 start_abbrev_off);
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internal U64 dw_abbrev_offset_from_abbrev_id(DW_AbbrevTable table, U64 abbrev_id);
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// form and tag
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internal U64 dw_read_form(String8 data, U64 off, DW_Version version, DW_Format unit_format, U64 address_size, DW_FormKind form_kind, U64 implicit_const, DW_Form *form_out);
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internal U64 dw_read_tag (Arena *arena, String8 tag_data, U64 tag_off, U64 tag_base, DW_AbbrevTable abbrev_table, String8 abbrev_data, DW_Version version, DW_Format unit_format, U64 address_size, DW_Tag *tag_out);
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internal U64 dw_read_tag_cu(Arena *arena, DW_Input *input, DW_CompUnit *cu, U64 info_off, DW_Tag *tag_out);
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// attrib interp
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internal U64 dw_interp_sec_offset(DW_FormKind form_kind, DW_Form form);
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internal String8 dw_interp_exprloc (DW_FormKind form_kind, DW_Form form);
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internal U128 dw_interp_const_u128(DW_FormKind form_kind, DW_Form form);
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internal U64 dw_interp_const_u64 (DW_FormKind form_kind, DW_Form form);
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internal U32 dw_interp_const_u32 (DW_FormKind form_kind, DW_Form form);
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internal S64 dw_interp_const_s64 (DW_FormKind form_kind, DW_Form form);
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internal S32 dw_interp_const_s32 (DW_FormKind form_kind, DW_Form form);
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internal B32 dw_interp_flag (DW_FormKind form_kind, DW_Form form);
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internal U64 dw_interp_address (U64 address_size, U64 base_addr, DW_ListUnit *addr_xlist, DW_FormKind form_kind, DW_Form form);
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internal String8 dw_interp_block (DW_Input *input, DW_CompUnit *cu, DW_FormKind form_kind, DW_Form form);
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internal String8 dw_interp_string (DW_Input *input, DW_Format unit_format, DW_ListUnit *str_offsets, DW_FormKind form_kind, DW_Form form);
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internal String8 dw_interp_line_ptr (DW_Input *input, DW_FormKind form_kind, DW_Form form);
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internal DW_LineFile * dw_interp_file (DW_LineVMHeader *line_vm, DW_FormKind form_kind, DW_Form form);
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internal DW_Reference dw_interp_ref (DW_Input *input, DW_CompUnit *cu, DW_FormKind form_kind, DW_Form form);
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internal DW_LocList dw_interp_loclist (Arena *arena, DW_Input *input, DW_CompUnit *cu, DW_FormKind form_kind, DW_Form form);
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internal Rng1U64List dw_interp_rnglist (Arena *arena, DW_Input *input, DW_CompUnit *cu, DW_FormKind form_kind, DW_Form form);
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internal String8 dw_exprloc_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal U128 dw_const_u128_from_attrib(DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal U64 dw_const_u64_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal U32 dw_const_u32_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal S64 dw_const_s64_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal S32 dw_const_s32_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal B32 dw_flag_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal U64 dw_address_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal String8 dw_block_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal String8 dw_string_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal String8 dw_line_ptr_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal DW_LineFile * dw_file_from_attrib (DW_CompUnit *cu, DW_LineVMHeader *line_vm, DW_Attrib *attrib);
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internal DW_Reference dw_ref_from_attrib (DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal DW_LocList dw_loclist_from_attrib (Arena *arena, DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal Rng1U64List dw_rnglist_from_attrib (Arena *arena, DW_Input *input, DW_CompUnit *cu, DW_Attrib *attrib);
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internal String8 dw_exprloc_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal U128 dw_const_u128_from_tag_attrib_kind(DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal U64 dw_const_u64_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal U32 dw_const_u32_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal B32 dw_flag_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal U64 dw_address_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal String8 dw_block_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal String8 dw_string_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal String8 dw_line_ptr_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal String8 dw_line_ptr_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal DW_LineFile * dw_file_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_LineVMHeader *line_vm, DW_Tag tag, DW_AttribKind kind);
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internal DW_Reference dw_ref_from_tag_attrib_kind (DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal DW_LocList dw_loclist_from_tag_attrib_kind (Arena *arena, DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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internal Rng1U64List dw_rnglist_from_tag_attrib_kind (Arena *arena, DW_Input *input, DW_CompUnit *cu, DW_Tag tag, DW_AttribKind kind);
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// compile unit
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internal DW_CompUnit dw_cu_from_info_off(Arena *arena, DW_Input *input, DW_ListUnitInput lu_input, U64 offset, B32 relaxed);
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internal DW_TagTree dw_tag_tree_from_cu(Arena *arena, DW_Input *input, DW_CompUnit *cu);
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internal HashTable * dw_make_tag_hash_table(Arena *arena, DW_TagTree tag_tree);
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internal DW_TagNode * dw_tag_node_from_info_off(DW_CompUnit *cu, U64 info_off);
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// line info
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internal U64 dw_read_line_file(String8 line_data, U64 line_off, DW_Input *input, DW_Version unit_version, DW_Format unit_format, DW_Ext ext, U64 address_size, DW_ListUnit *str_offsets, U64 enc_count, U64 *enc_arr, DW_LineFile *line_file_out);
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internal U64 dw_read_line_vm_header(Arena *arena, String8 line_data, U64 line_off, DW_Input *input, String8 cu_dir, String8 cu_name, U8 cu_address_size, DW_ListUnit *cu_str_offsets, DW_LineVMHeader *header_out);
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internal void dw_line_vm_reset(DW_LineVMState *state, B32 default_is_stmt);
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internal void dw_line_vm_advance(DW_LineVMState *state, U64 advance, U64 min_inst_len, U64 max_ops_for_inst);
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internal DW_LineSeqNode * dw_push_line_seq(Arena* arena, DW_LineTableParseResult *parsed_tbl);
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internal DW_LineNode * dw_push_line(Arena *arena, DW_LineTableParseResult *tbl, DW_LineVMState *vm_state, B32 start_of_sequence);
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internal String8 dw_path_from_file(Arena *arena, DW_LineVMHeader *vm, DW_LineFile *file);
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internal String8 dw_path_from_file_idx(Arena *arena, DW_LineVMHeader *vm, U64 file_idx);
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internal DW_LineTableParseResult dw_parsed_line_table_from_data(Arena *arena, String8 unit_data, DW_Input *input, String8 cu_dir, String8 cu_name, U8 cu_address_size, DW_ListUnit *cu_str_offsets);
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// helper for .debug_pubtypes and .debug_pubnames
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internal DW_PubStringsTable dw_v4_pub_strings_table_from_section_kind(Arena *arena, DW_Input *input, DW_SectionKind section_kind);
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// expression
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internal DW_Expr dw_expr_from_data(Arena *arena, DW_Format format, U64 addr_size, String8 data);
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// debug frame
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internal void dw_cfa_inst_list_push_node(DW_CFA_InstList *list, DW_CFA_InstNode *n);
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internal DW_CFA_InstNode * dw_cfa_inst_list_push(Arena *arena, DW_CFA_InstList *list, DW_CFA_Inst v);
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internal U64 dw_read_debug_frame_ptr(String8 data, DW_CIE *cie, U64 *ptr_out);
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internal U64 dw_parse_descriptor_entry_header(String8 data, U64 off, DW_DescriptorEntry *desc_out);
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internal B32 dw_parse_cie(String8 data, DW_Format format, Arch arch, DW_CIE *cie_out);
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internal B32 dw_parse_fde(String8 data, DW_Format format, DW_CIEFromOffsetFunc *cie_from_offset_func, void *cie_from_offset_ud, DW_FDE *fde_out);
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internal DW_CFA_ParseErrorCode dw_parse_cfa_inst(String8 data, U64 code_align_factor, S64 data_align_factor, DW_DecodePtr *decode_ptr_func, void *decode_ptr_ud, U64 *bytes_read_out, DW_CFA_Inst *inst_out);
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internal DW_CFA_InstList dw_parse_cfa_inst_list(Arena *arena, String8 data, U64 code_align_factor, S64 data_align_factor, DW_DecodePtr *decode_ptr_func, void *decode_ptr_ud);
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#endif // DWARF_PARSE_H
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