Re: RFC/RFA: Improve definition of ASM_OUTPUT_MEASURED_SIZE

[Zack Weinberg <zack@codesourcery.com>]

On Thu, Jul 25, 2002 at 06:53:39PM -0700, Richard Henderson wrote:
> On Thu, Jul 25, 2002 at 05:20:49PM -0700, Zack Weinberg wrote:
> > It seems to me that any assembler with a
> > .size directive ought to be modern enough to accept the expression
> > ".-foo".
> 
> I don't think this is actually true.  Better try this
> on Solaris, Irix, and SCO.

Robert Lipe has reported it works on SCO.

On Solaris,

$ cat test.s
        .section ".text"
        .global foo
        .type    foo,#function
foo:
        retl
        sll     %o0, 1, %o0
        .size    foo, .-foo
$ /usr/ccs/bin/as -V test.s
as: Sun WorkShop 6 99/08/18
$ nm test.o
[Index]   Value      Size    Type  Bind  Other Shndx   Name
[1]     |         0|       0|SECT |LOCL |0    |2      |
[2]     |         0|       8|FUNC |GLOB |0    |2      |foo
$ uname -a
SunOS chili 5.8 Generic_108528-10 sun4u sparc SUNW,Ultra-5_10

2.8 is recent, yes, but the datestamp on that assembler is quite old.
(I no longer remember how to find out what patches have been applied
to a specific file.)

I have no access to IRIX.

> I'd be willing to go the other way and always use the intermediate
> symbol though.

I'd be willing to do that if we have to, but if we can make .-sym
work on all or even most of these systems I think that's a cleaner
solution.

zw