From: Frank van Maarseveen <frankvm@frankvm.com>
To: linuxppc-dev@ozlabs.org
Subject: bug in arch/ppc/kernel/misc.S: __ashrdi3?
Date: Fri, 15 Jul 2005 18:01:15 +0200 [thread overview]
Message-ID: <20050715160115.GA22990@janus> (raw)
I don't really grok the code but an operand seems to be missing and the
assembler makes something out of it I don't trust:
_GLOBAL(__ashrdi3)
...
rlwinm r8,r7,0,32 # t3 = (count < 32) ? 32 : 0
Trying it out:
$ cat a.c
void f(void)
{
__asm("rlwinm 8,7,0,32");
}
$ ppc_4xx-gcc -O2 -c a.c
$ ppc-linux-objdump -S a.o
a.o: file format elf32-powerpc
Disassembly of section .text:
00000000 <f>:
f():
0: 54 e8 06 b4 rlwinm r8,r7,0,26,26
4: 4e 80 00 20 blr
--
Frank
next reply other threads:[~2005-07-15 16:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-15 16:01 Frank van Maarseveen [this message]
2005-07-15 18:22 ` bug in arch/ppc/kernel/misc.S: __ashrdi3? Andreas Schwab
2005-07-16 17:39 ` Benjamin Herrenschmidt
2005-07-16 18:02 ` Andreas Schwab
2005-07-16 18:24 ` Benjamin Herrenschmidt
2005-07-18 12:14 ` Gabriel Paubert
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