Hello, I'm working on support in elfutils for the .debug_macro proposal[1].
The numerical values and semantics of DW_MACINFO_* opcodes are equivalent to their new-style DW_MACRO_* counterparts. So a decoder could transparently read in .debug_macro instead of .debug_macinfo, and serve the opcodes found there to a client, without fear that they get misinterpreted. Were it not for DW_MACINFO_vendor_ext, 0xff. This value, in new-style sections, is part of the vendor extension block, as DW_MACRO_hi_user. It could be allocated and emitted, and a client would misinterpret it as DW_MACINFO_vendor_ext, decode it, and make decisions based on this misinterpretation. I would therefore like to propose that the opcode 0xff is considered reserved, and DW_MACRO_hi_user is changed to 0xfe. Does this sound reasonable? Should I file an issue for this? [1] http://www.dwarfstd.org/ShowIssue.php?issue=110722.1 Thanks, Petr _______________________________________________ Dwarf-Discuss mailing list Dwarf-Discuss@lists.dwarfstd.org http://lists.dwarfstd.org/listinfo.cgi/dwarf-discuss-dwarfstd.org
