https://sourceware.org/bugzilla/show_bug.cgi?id=25750
--- Comment #11 from Fangrui Song <i at maskray dot me> --- (In reply to Nick Clifton from comment #9) > (In reply to Jian Cai from comment #8) > Hi Jian, > > > .macro foo insn1 insn2 > > \insn1 > > \insn2 > > .endm > > > > foo .section .sec1, .section .sec2 > > It occurs to me that we might be able to achieve something like this, > if we extend the macro argument syntax to include a definition of the > argument separator. For example: > > .macro foo insn1:sep, insn2:vararg > \insn1 > \insn2 > .endm > > This would tell the macro processor that insn1 takes all characters up to > (but excluding) the next comma character and that insn2 takes the rest of > the line (starting at the first non-whitespace character after the comma). > > The new syntax "<arg>:sep<char>" tells the macro processor that argument > <arg> is separated from the next argument by the <char> character, and only > by the <char> character, so that any other character (apart from line ending > characters) forms part of <arg>. > > This syntax does not exist *yet*. I am going to have a look at implementing > it, but if it is too difficult I will give up. > > What do you think - would this change provide the functionality that you > desire ? > > Cheers > Nick Hi Nick, for Jian's request, we can probably just quote the arguments .macro foo insn1 insn2 \insn1 \insn2 .endm - foo .section .sec1, .section .sec2 + foo ".section .sec1", ".section .sec2" We need to document it, though. > Comment 10 > There is one feature not documented in > https://sourceware.org/binutils/docs/as/Macro.html For a string literal > argument, gas will remove the quotes when evaluation the argument. I am a bit concerned that the :sep qualifier will not be accurate, either. do_scrub_chars() can squeeze a run of spaces or delete some spaces arbitrarily. The :sep argument will not be a sole separator as spaces/commas can be separators as well. % x86_64-linux-gnu-as a.s && objdump -s 0000 612c6220 28632064 292c65 a,b (c d),e % aarch64-linux-gnu-as a.s && objdump -s ... 0000 612c6228 63206429 2c65 a,b(c d),e -- You are receiving this mail because: You are on the CC list for the bug.
