diff options
| author | David S. Miller <davem@davemloft.net> | 2008-07-18 11:39:39 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-18 11:39:39 +0200 |
| commit | 49997d75152b3d23c53b0fa730599f2f74c92c65 (patch) | |
| tree | 46e93126170d02cfec9505172e545732c1b69656 /arch/mn10300/lib/__ucmpdi2.S | |
| parent | pkt_sched: Make default qdisc nonshared-multiqueue safe. (diff) | |
| parent | Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff) | |
| download | linux-49997d75152b3d23c53b0fa730599f2f74c92c65.tar.xz linux-49997d75152b3d23c53b0fa730599f2f74c92c65.zip | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
Documentation/powerpc/booting-without-of.txt
drivers/atm/Makefile
drivers/net/fs_enet/fs_enet-main.c
drivers/pci/pci-acpi.c
net/8021q/vlan.c
net/iucv/iucv.c
Diffstat (limited to 'arch/mn10300/lib/__ucmpdi2.S')
| -rw-r--r-- | arch/mn10300/lib/__ucmpdi2.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/mn10300/lib/__ucmpdi2.S b/arch/mn10300/lib/__ucmpdi2.S new file mode 100644 index 000000000000..60dcbdfe386c --- /dev/null +++ b/arch/mn10300/lib/__ucmpdi2.S @@ -0,0 +1,43 @@ +/* __ucmpdi2.S: 64-bit unsigned compare + * + * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + + .text + .p2align 4 + +############################################################################### +# +# int __ucmpdi2(unsigned long long a [D0:D1], +# unsigned long long b [(SP,12),(SP,16)]) +# +# - returns 0, 1, or 2 as a <, =, > b respectively. +# +############################################################################### + .globl __ucmpdi2 + .type __ucmpdi2,@function +__ucmpdi2: + mov (12,sp),a0 # b.lsw + mov (16,sp),a1 # b.msw + + sub a0,d0 + subc a1,d1 # may clear Z, never sets it + bne __ucmpdi2_differ # a.msw != b.msw + mov +1,d0 + rets + +__ucmpdi2_differ: + # C flag is set if LE, clear if GE + subc d0,d0 # -1 if LE, 0 if GE + add +1,d0 # 0 if LE, 1 if GE + add d0,d0 # 0 if LE, 2 if GE + rets + + .size __ucmpdi2, .-__ucmpdi2 |