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* as.h (flag_mri): Declare/define. * as.c (show_usage): Mention -M and its synonym --mri. (parse_args): Add 'M' to std_shortopts. Add "mri" to std_longopts. Set flag_mri if -M is seen. (main): Call parse_args before input_scrub_begin. Call expr_begin. * app.c (do_scrub_begin): Don't set lex for '"' or '\'' in MRI mode. Do set lex for ';', '*', and '!' in MRI mode. (do_scrub_next_char): Remove MRI ifdef in LEX_IS_WHITESPACE case. In MRI mode, keep spaces between labels and colons. Remove MRI ifndef around LEX_IS_ONECHAR_QUOTE case. In MRI mode, don't use '!' or '*' as comment characters even if they are in comment_chars. * read.h (lex_type): No longer const. * read.c: Include libiberty.h. (lex_type): No longer const. (read_begin): In MRI mode, set lex_type of '?' to 3. (potable): Add dc, dc.b, dc.d, dc.l, dc.s, dc.w, dc.x, ds, ds.b, ds.l, ds.w, and xdef. (read_a_source_file): Change LABELS_WITHOUT_COLON ifdef to check for MRI mode at runtime rather than compile time. Handle the EQU pseudo-op in MRI mode. Remove bogus MRI ifdef around done_pseudo. Change NO_PSEUDO_DOT ifdef to also take effect for MRI mode at runtime. (cons): In MRI mode, always call parse_mri_cons rather than TC_PARSE_CONS_EXPRESSION. (parse_mri_cons): Always compile, not just when MRI is defined. Call TC_PARSE_CONS_EXPRESSION, not expression, when the input is not a string constant. Handle A and E modifiers. (float_cons): Accept :xxxx, where the x's are hex digits. * expr.h (operatorT): Add O_eq, O_ne, O_lt, O_le, O_ge, O_gt. (expr_begin): Declare. * expr.c (integer_constant): In MRI mode, if the base was not specified, look for a suffix on the number to set the base. (mri_char_constant): New static function. (operand): Remove MRI ifdef. In MRI mode, do various things: Pass 0 as the base when calling integer_constant if there was no prefix. Check for a hex constant suffix if when a leading '0' is seen. Don't accept 0x or 0b as a prefix. Check for E'chars' and A'chars'. Handle MRI character constants. Treat '"' as the unary bitwise not operator. Treat $ as the program counter, or as the prefix for a hex constant. Treat % as the prefix for a binary constant and @ as the prefix for an octal constant. Treat : as the prefix for a hex constant. (op_encoding): Set '"' to O_bit_not, '<' to O_lt, and '>' to O_gt. (op_rank): No longer const. Change rank values. (expr_begin): New function. (operator): New static function. (expr): Use operator. Don't bother to mention the operator in warnings. Remove bogus #if 0 code. Handle new operatorT values. * atof-generic.c (atof_generic): In MRI mode, accept underscores around the exponent in floating point numbers. * symbols.h (symbols_case_sensitive): Declare. * symbols.c (symbols_case_sensitive): New global variable. (symbol_create): Check symbols_case_sensitive. (symbol_find_base): Likewise. (resolve_symbol_value): Handle new operatorT values. (print_expr_1): Likewise. (S_IS_LOCAL): In MRI mode, names beginning with two '?' characters are local.