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arc: Construct disassembler options dynamically

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The idea of this change is simple: Populate a data structure, namely
"disasm_option_and_arg_t" from "include/dis-asm.h", to encompass the
disassembly options and their possible arguments.

This will make it easier to manage or extend those options by adapting
entries in a data structure, "arc_options".  There will be lesser need
to hard-code the options in the code itself.  Moreover, ARC GDB will
use this population function, "disassembler_options_arc ()", to enable
the "set disassembler-option" for ARC targets.  The gdb change will be
in a separate patch though.

The changes in this patch can be divided into:

1) Introduction of "disassembler_options_arc ()" that will return a
"disasm_option_and_arg_t" structure representing the disassembly
options and their likely arguments.

2) New data type "arc_options_arg_t" and new data "arc_options".
These are the internals for keeping track of options and arguments
entries that can easily be extended.

3) To print the options, the "print_arc_disassembler_options ()" has
been adjusted to use this dynamically built structure instead of having
them hard-coded inside.

To see this in effect, one can look into the output of:
$ ./binutils/objdump --help
  ...
  The following ARC specific disassembler options are...
  ...

include/ChangeLog:

	* dis-asm.h (disassembler_options_arc): New prototype.

opcodes/ChangeLog:

	* arc-dis.c (arc_option_arg_t): New enumeration.
	(arc_options): New variable.
	(disassembler_options_arc): New function.
	(print_arc_disassembler_options): Reimplement in terms of
	"disassembler_options_arc".
This commit is contained in:
Shahab Vahedi
2021-06-02 15:30:16 +03:00
committed by Claudiu Zissulescu
parent f2d4211150
commit 8f46711443
4 changed files with 166 additions and 27 deletions
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1
include/dis-asm.h
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@ -315,6 +315,7 @@ extern void disassemble_init_powerpc (struct disassemble_info *);
extern void disassemble_init_s390 (struct disassemble_info *);
extern void disassemble_init_wasm32 (struct disassemble_info *);
extern void disassemble_init_nds32 (struct disassemble_info *);
extern const disasm_options_and_args_t *disassembler_options_arc (void);
extern const disasm_options_and_args_t *disassembler_options_arm (void);
extern const disasm_options_and_args_t *disassembler_options_mips (void);
extern const disasm_options_and_args_t *disassembler_options_powerpc (void);