| /* __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 |