+2020-06-04 Stephen Casner <casner@acm.org>
+
+ Extend pdp11-aout symbol table format to accommodate .stab
+ symbols and implement correct handling of them.
+
+ * pdp11.c (pdp11_external_nlist): Repurposed e_unused to e_desc.
+ (N_STAB, is_stab): Needed new function is_stab to disambiguate
+ normal vs. .stab symbol table type values, replacing N_STAB mask.
+ (translate_from_native_sym_flags): Determine correct section for
+ different .stab types.
+ (translate_to_native_sym_flags): Leave .stab types intact.
+ (translate_symbol_table): Error if symbol indicates overlay;
+ store desc field from .stab symbols.
+ (write_syms): Output desc field with symbol.
+ (aout_link_check_ar_symbols): Skip .stab symbols.
+ (aout_link_add_symbols): Correctly distinguish .stab symbols.
+ (aout_link_write_other_symbol): Write 0 for desk and ovly fields.
+ (aout_link_write_symbols): Write 0 for desk and ovly fields;
+ correctly distinguish .stab symbols and select calculate their
+ section and value; and copy desc and ovly fields from input symbol
+ to output symbol.
+
+2020-06-04 Stephen Casner <casner@acm.org>
+
+ * aoutx.h (translate_symbol_table): Comment had external and
+ internal swapped.
+ * pdp11.c (translate_symbol_table): Likewise.
+