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dumper for Dwarf

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This commit is contained in:
Nikita Smith
2025-01-08 03:26:04 -08:00
parent 543ee72f95
commit 98b9427446
14 changed files with 5800 additions and 979 deletions
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src/dwarf/dwarf_parse.h
+41 -38
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@@ -50,6 +50,7 @@ struct DW_AbbrevTable
typedef struct DW_Section DW_Section;
struct DW_Section
{
String8 name;
String8 data;
DW_Mode mode;
B32 is_dwo;
@@ -201,7 +202,6 @@ struct DW_CompRoot
U64 size;
DW_CompUnitKind kind;
DW_Version version;
DW_Ext ext;
U64 address_size;
U64 abbrev_off;
U64 info_off;
@@ -228,10 +228,6 @@ struct DW_CompRoot
U64 high_pc;
DW_AttribValue ranges_attrib_value;
U64 base_addr;
// NOTE(rjf): Line/File Info For This Comp Unit
String8Array dir_table;
DW_LineVMFileArray file_table;
};
////////////////////////////////
@@ -314,32 +310,32 @@ struct DW_TagStubList
typedef struct DW_LineVMHeader DW_LineVMHeader;
struct DW_LineVMHeader
{
U64 unit_length;
U64 unit_opl;
U16 version;
U8 address_size; // NOTE(nick): duplicates size from the compilation unit but is needed to support stripped exe that just have .debug_line and .debug_line_str.
U8 segment_selector_size;
U64 header_length;
U64 program_off;
U8 min_inst_len;
U8 max_ops_for_inst;
U8 default_is_stmt;
S8 line_base;
U8 line_range;
U8 opcode_base;
U64 num_opcode_lens;
U8 *opcode_lens;
String8Array dir_table;
DW_LineVMFileArray file_table;
U64 unit_length;
U64 unit_opl;
DW_Version version;
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.
U8 segment_selector_size;
U64 header_length;
U64 program_off;
U8 min_inst_len;
U8 max_ops_for_inst;
U8 default_is_stmt;
S8 line_base;
U8 line_range;
U8 opcode_base;
U64 num_opcode_lens;
U8 *opcode_lens;
String8Array dir_table;
DW_LineVMFileArray file_table;
};
typedef struct DW_LineVMState DW_LineVMState;
struct DW_LineVMState
{
U64 address; // NOTE(nick): Address of a machine instruction.
U32 op_index; // NOTE(nick): This is used by the VLIW instructions to indicate index of operation inside the instruction.
U64 address; // Address of a machine instruction.
U32 op_index; // This is used by the VLIW instructions to indicate index of operation inside the instruction.
// NOTE(nick): Line table doesn't contain full path to a file, instead
// Line table doesn't contain full path to a file, instead
// DWARF encodes path as two indices. First index will point into a directory
// table, and second points into a file name table.
U32 file_index;
@@ -347,10 +343,10 @@ struct DW_LineVMState
U32 line;
U32 column;
B32 is_stmt; // NOTE(nick): Indicates that "address" points to place suitable for a breakpoint.
B32 basic_block; // NOTE(nick): Indicates that the "address" is inside a basic block.
B32 is_stmt; // Indicates that "address" points to place suitable for a breakpoint.
B32 basic_block; // Indicates that the "address" is inside a basic block.
// NOTE(nick): Indicates that "address" points to place where function starts.
// Indicates that "address" points to place where function starts.
// Usually prologue is the place where compiler emits instructions to
// prepare stack for a function.
B32 prologue_end;
@@ -421,16 +417,23 @@ struct DW_PubStringsTable
////////////////////////////////
//~ rjf: Basic Helpers
internal U64 dw_hash_from_string(String8 string);
internal DW_AttribClass dw_pick_attrib_value_class(DW_Version ver, DW_Ext ext, DW_Language lang, DW_AttribKind attrib, DW_FormKind form_kind);
internal U64 dw_hash_from_string(String8 string);
////////////////////////////////
//~ Specific Based Range Helpers
internal U64 dw_based_range_read_length(void *base, Rng1U64 range, U64 offset, U64 *out_value);
internal U64 dw_based_range_read_abbrev_tag(void *base, Rng1U64 range, U64 offset, DW_Abbrev *out_abbrev);
internal U64 dw_based_range_read_abbrev_attrib_info(void *base, Rng1U64 range, U64 offset, DW_Abbrev *out_abbrev);
internal U64 dw_based_range_read_attrib_form_value(void *base, Rng1U64 range, U64 offset, DW_Mode mode, U64 address_size, DW_FormKind form_kind, U64 implicit_const, DW_AttribValue *form_value_out);
#define dw_based_range_read_struct(base, range, offset, out) dw_based_range_read(base, range, offset, sizeof(*out), out)
internal U64 dw_based_range_read(void *base, Rng1U64 range, U64 offset, U64 size, void *out);
internal String8 dw_based_range_read_string(void *base, Rng1U64 range, U64 offset);
internal void* dw_based_range_ptr(void *base, Rng1U64 range, U64 offset);
internal void* dw_based_range_ptr_size(void *base, Rng1U64 range, U64 offset, U64 size);
internal U64 dw_based_range_read_uleb128(void *base, Rng1U64 range, U64 offset, U64 *out_value);
internal U64 dw_based_range_read_sleb128(void *base, Rng1U64 range, U64 offset, S64 *out_value);
internal U64 dw_based_range_read_length(void *base, Rng1U64 range, U64 offset, U64 *out_value);
internal U64 dw_based_range_read_abbrev_tag(void *base, Rng1U64 range, U64 offset, DW_Abbrev *out_abbrev);
internal U64 dw_based_range_read_abbrev_attrib_info(void *base, Rng1U64 range, U64 offset, DW_Abbrev *out_abbrev);
internal U64 dw_based_range_read_attrib_form_value(void *base, Rng1U64 range, U64 offset, DW_Mode mode, U64 address_size, DW_FormKind form_kind, U64 implicit_const, DW_AttribValue *form_value_out);
internal DW_Mode dw_mode_from_sec(DW_SectionArray *sections, DW_SectionKind kind);
internal B32 dw_sec_is_present(DW_SectionArray *sections, DW_SectionKind kind);
@@ -473,8 +476,8 @@ internal Rng1U64List dw_range_list_from_high_low_pc_and_ranges_a
////////////////////////////////
//~ rjf: Tag Parsing
internal DW_AttribListParseResult dw_parse_attrib_list_from_info_abbrev_offsets(Arena *arena, DW_SectionArray *sections, DW_Version ver, DW_Ext ext, DW_Language lang, U64 address_size, U64 info_off, U64 abbrev_off);
internal DW_Tag* dw_tag_from_info_offset(Arena *arena, DW_SectionArray *sections, DW_AbbrevTable abbrev_table, DW_Version ver, DW_Ext ext, DW_Language lang, U64 address_size, U64 info_offset);
internal DW_AttribListParseResult dw_parse_attrib_list_from_info_abbrev_offsets(Arena *arena, DW_SectionArray *sections, DW_Version ver, DW_Ext ext, DW_Language lang, U64 address_size, U64 info_off, U64 abbrev_off, B32 relaxed);
internal DW_Tag* dw_tag_from_info_offset(Arena *arena, DW_SectionArray *sections, DW_AbbrevTable abbrev_table, DW_Version ver, DW_Ext ext, DW_Language lang, U64 address_size, U64 info_offset, B32 relaxed);
internal DW_TagStub dw_stub_from_tag(DW_SectionArray *sections, DW_AttribValueResolveParams resolve_params, DW_Tag *tag);
//- rjf: line info
@@ -484,8 +487,8 @@ internal void dw_line_vm_advance(DW_LineVMState *state, U64 advance, U64 min_ins
internal DW_LineSeqNode* dw_push_line_seq(Arena* arena, DW_LineTableParseResult *parsed_tbl);
internal DW_LineNode* dw_push_line(Arena *arena, DW_LineTableParseResult *tbl, DW_LineVMState *vm_state, B32 start_of_sequence);
internal DW_LineTableParseResult dw_parsed_line_table_from_comp_root(Arena *arena, DW_SectionArray *sections, DW_CompRoot *root);
internal U64 dw_read_line_file(void *line_base, Rng1U64 line_rng, U64 line_off, DW_Mode mode, DW_SectionArray *sections, DW_CompRoot *unit, U8 address_size, U64 format_count, Rng1U64 *formats, DW_LineFile *line_file_out);
internal U64 dw_read_line_vm_header(Arena *arena, void *line_base, Rng1U64 line_rng, U64 line_off, DW_Mode mode, DW_SectionArray *sections, DW_CompRoot *unit, DW_LineVMHeader *header_out);
internal U64 dw_read_line_file(void *line_base, Rng1U64 line_rng, U64 line_off, DW_Mode mode, DW_SectionArray *sections, DW_AttribValueResolveParams resolve_params, U8 address_size, U64 format_count, Rng1U64 *formats, DW_LineFile *line_file_out);
internal U64 dw_read_line_vm_header(Arena *arena, void *line_base, Rng1U64 line_rng, U64 line_off, DW_Mode mode, DW_SectionArray *sections, DW_AttribValueResolveParams resolve_params, String8 compile_dir, String8 unit_name, DW_LineVMHeader *header_out);
#endif // DWARF_PARSE_H