alpha/sigsuspend.S failure due to cfi mismatches

[Mike Frysinger <vapier at gentoo dot org>]

i first noticed this with newer versions of tools and glibc-2.5 ... poking 
through cvs, i saw alpha/sysdep-cancel.h was updated to address cfi issues, 
but even with that patch, there's still some trouble.

testing with:
 - binutils-2.17
 - gcc-4.1.2
 - glibc-2.6

i hit this build error:
alphaev68-unknown-linux-gnu-gcc ../sysdeps/unix/sysv/linux/alpha/sigsuspend.S -c  -I../include -I/var/tmp/portage/sys-libs/glibc-2.6/work/build-default-alphaev68-unknown-linux-gnu-nptl/signal -I/var/tmp/portage/sys-libs/glibc-2.6/work/build-default-alphaev68-unknown-linux-gnu-nptl -I../nptl/sysdeps/alpha/elf -I../sysdeps/alpha/elf -I../sysdeps/unix/sysv/linux/alpha/fpu -I../sysdeps/alpha/fpu -I../nptl/sysdeps/unix/sysv/linux/alpha -I../sysdeps/unix/sysv/linux/alpha -I../sysdeps/unix/sysv/linux/wordsize-64 -I../sysdeps/ieee754/ldbl-64-128 -I../sysdeps/ieee754/ldbl-opt -I../nptl/sysdeps/unix/sysv/linux -I../nptl/sysdeps/pthread -I../sysdeps/pthread -I../sysdeps/unix/sysv/linux -I../sysdeps/gnu -I../sysdeps/unix/common -I../sysdeps/unix/mman -I../sysdeps/unix/inet -I../nptl/sysdeps/unix/sysv -I../sysdeps/unix/sysv -I../sysdeps/unix/alpha -I../nptl/sysdeps/unix -I../sysdeps/unix -I../sysdeps/posix -I../nptl/sysdeps/alpha -I../sysdeps/alpha -I../sysdeps/wordsize-64 -I../sysdeps/ieee754/ldbl-128 -I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32 -I../sysdeps/alpha/soft-fp -I../sysdeps/ieee754 -I../sysdeps/generic/elf -I../sysdeps/generic -I../nptl  -I.. -I../libio -I. -nostdinc -isystem /usr/lib/gcc/alphaev68-unknown-linux-gnu/4.1.2/include -isystem /usr/include -D_LIBC_REENTRANT -include ../include/libc-symbols.h        -DASSEMBLER   -Wa,--noexecstack  -o /var/tmp/portage/sys-libs/glibc-2.6/work/build-default-alphaev68-unknown-linux-gnu-nptl/signal/sigsuspend.o -MD -MP -MF /var/tmp/portage/sys-libs/glibc-2.6/work/build-default-alphaev68-unknown-linux-gnu-nptl/signal/sigsuspend.o.dt -MT /var/tmp/portage/sys-libs/glibc-2.6/work/build-default-alphaev68-unknown-linux-gnu-nptl/signal/sigsuspend.o
../sysdeps/unix/sysv/linux/alpha/sigsuspend.S: Assembler messages:
../sysdeps/unix/sysv/linux/alpha/sigsuspend.S:41: Error: previous CFI entry 
not closed (missing .cfi_endproc)
../sysdeps/unix/sysv/linux/alpha/sigsuspend.S:43: Error: .cfi_endproc without 
corresponding .cfi_startproc
make: *** 
[/var/tmp/portage/sys-libs/glibc-2.6/work/build-default-alphaev68-unknown-linux-gnu-nptl/signal/sigsuspend.o] 
Error 1

looking at the .s output, you can see:
.cfi_startproc
__sigsuspend:
...
$pseudo_ret:
.subsection 2
.cfi_startproc
...

which is pretty much how the alpha sysdep-cancel.h header looks like for the 
PSEUDO() macro ...
-mike

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