https://sourceware.org/bugzilla/show_bug.cgi?id=20364
Nick Clifton <nickc at redhat dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2016-08-02 CC| |nickc at redhat dot com Assignee|unassigned at sourceware dot org |nickc at redhat dot com Ever confirmed|0 |1 --- Comment #1 from Nick Clifton <nickc at redhat dot com> --- Created attachment 9419 --> https://sourceware.org/bugzilla/attachment.cgi?id=9419&action=edit Proposed patch Hi Paul, This is a subtle one. What is happening is that ".align <num>" in a code section (like .text or .vectors) will use the default NOP value to fill in the space. But ".align <num>, <fill>" will use the provided fill value. This matters because the AArch64 backend knows that NOP is an instruction, but it does not know about <fill> and it assumes that it is a *data* value, not an *instruction*. So it changes the mapping state to MAP_DATA, creates a mapping symbol ($d) indicate the change of state, and creates a new fragment to contain the data. All of this means that when the macro parser tries to evaluate the .if statement it finds that dot is one fragment and the symbol is in another fragment. Since fragments can grow or shrink the distance between them cannot be computed reliably (at the time that the .if expressions is evaluated) and so the assembler issues its error message. I have uploaded a small patch which I think will fix the problem. It tells the AArch64 backend not to assume that alignment directives in code sections contain data. Instead it should assume that they contain instructions, and so not change the mapping state. This causes a subtle problem with regard to literal pools, but the patch takes care of that. Please give the patch a try and let me know how you get on. Cheers Nick -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils