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The function aarch64_print_operand (aarch64-opc.c) is responsible for converting an instruction operand into the textual representation of that operand. In some cases, a comment is included in the operand representation, though this (currently) only happens for the last operand of the instruction. In a future commit I would like to enable the new libopcodes styling for AArch64, this will allow objdump and GDB[1] to syntax highlight the disassembler output, however, having operands and comments combined in a single string like this makes such styling harder. In this commit, I propose to extend aarch64_print_operand to take a second buffer. Any comments for the instruction are written into this extra buffer. The two callers of aarch64_print_operand are then updated to pass an extra buffer, and print any resulting comment. In this commit no styling is added, that will come later. However, I have adjusted the output slightly. Before this commit some comments would be separated from the instruction operands with a tab character, while in other cases the comment was separated with two single spaces. After this commit I use a single tab character in all cases. This means a few test cases needed updated. If people would prefer me to move everyone to use the two spaces, then just let me know. Or maybe there was a good reason why we used a mix of styles, I could probably figure out a way to maintain the old output exactly if that is critical. Other than that, there should be no user visible changes after this commit. [1] GDB patches have not been merged yet, but have been posted to the GDB mailing list: https://sourceware.org/pipermail/gdb-patches/2022-June/190142.html |
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