[400] in Pthreads mailing list archive
nop needed in delay slot for SPARC.
daemon@ATHENA.MIT.EDU (John Basrai)
Wed Aug 28 15:11:20 1996
Date: Wed, 28 Aug 96 11:47:27 PDT
From: John Basrai <jbasrai@Unify.Com>
To: pthreads@MIT.EDU
FYI: syscall.S needs a nop in a delay slot after a retl. Probably
harmless but just thought I'd let you know.
syscall.S -> ./config/../machdep/syscall-sparc-sunos4.S
_machdep_sys_fork:;
mov SYS_fork, %g1;
ta 0;
bcs 1b;
nop;
tst %o1
bne,a __fork_parent
mov %g0, %o0
__fork_parent:;
retl
nop <- nop needed here to avoid error "label in delay slot"
/* POSIX-compliant getpgrp() takes no arguments. The SunOS syscall wants
one, and gives the POSIXy result if that argument is zero. */
.globl _getpgrp
_getpgrp: <-- here is the label.
mov SYS_getpgrp, %g1 <-- this will get executed as
delay slot (harmless)
--
John Basrai
Unify Corporation
---------
The sad part is...
I'm really a very good tailor -- Elim Garak "Deep Space Nine"
