nx_dwarf_rnglists.nx

nx_dwarf_rnglists.nx -- DWARF v5 .debug_rnglists builder. .debug_rnglists supersedes .debug_ranges (DWARF v3/v4). Stores non-contiguous PC-range sets for DIEs whose code lives in multiple discontiguous .text fragments (e.g. inlined functions, hot/cold splitting, function-section partitioning). A DIE references its range list via DW_AT_ranges with form DW_FORM_rnglistx (uleb128 index into .debug_rnglists's offset table) or DW_FORM_sec_offset. Per-CU range list layout (DWARF v5 7.28): header: length u32 version u16 = 5 address_size u8 = 8 segment_selector u8 = 0 offset_entry_count u32 offsets[count] u32 (each = file offset within rnglists of one range list relative to end of header) range lists: each = sequence of operations terminated by DW_RLE_end_of_list DW_RLE_* opcodes (subset we emit): DW_RLE_end_of_list 0x00 DW_RLE_base_addressx 0x01 (uleb idx into addr table) DW_RLE_startx_endx 0x02 (uleb startx, uleb endx) DW_RLE_startx_length 0x03 (uleb startx, uleb len) DW_RLE_offset_pair 0x04 (uleb start, uleb end -- relative to base addr) DW_RLE_base_address 0x05 (8-byte abs) DW_RLE_start_end 0x06 (8-byte start, 8-byte end) DW_RLE_start_length 0x07 (8-byte start, uleb length) Pairs with nx_dwarf_info (consumer of the offset references) + nx_dwarf_aranges (similar but for PC-to-CU lookup, not per-DIE).