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Re: DWARF2 bugs debug/10000 to debug/10005
Richard Henderson wrote:
> Labels that are not actively involved with control flow will have
> no fixed anchor, and will float about somewhat randomly. This can't
> be helped without severely pessimizing code generation.
I see, and a compile-time option that does just that may not be
worth the trouble either. Actually, the DWARF2 format isn't exactly
cooperating by allowing labels to have only one location.
Anyway, I think I have a work-around for this: by placing macros
that expand (in an __asm__ __volatile__) to something like
1:
.section .my_labels,"",@progbits
.long 1b
.string "label_name"
.byte 0
.text
I should be able to build labels with the semantics I need. Of
course, they'd only work in text sections (or any sections that
I explicitly make them work in), but at least I'll get an error
from gas if I try to use them anywhere else.
Thanks,
- Werner
--
_________________________________________________________________________
/ Werner Almesberger, Buenos Aires, Argentina werner at almesberger dot net /
/_http://www.almesberger.net/____________________________________________/