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1 ; Copyright (C) 2017-2019 Free Software Foundation, Inc.
2 ; Contributed by Sebastian Perta.
3 ;
4 ; This file is free software; you can redistribute it and/or modify it
5 ; under the terms of the GNU General Public License as published by the
6 ; Free Software Foundation; either version 3, or (at your option) any
7 ; later version.
8 ;
9 ; This file is distributed in the hope that it will be useful, but
10 ; WITHOUT ANY WARRANTY; without even the implied warranty of
11 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 ; General Public License for more details.
13 ;
14 ; Under Section 7 of GPL version 3, you are granted additional
15 ; permissions described in the GCC Runtime Library Exception, version
16 ; 3.1, as published by the Free Software Foundation.
17 ;
18 ; You should have received a copy of the GNU General Public License and
19 ; a copy of the GCC Runtime Library Exception along with this program;
20 ; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
21 ; <http://www.gnu.org/licenses/>.
22
23
24 #include "vregs.h"
25
26 .text
27
28 START_FUNC ___smindi3
29
30 ; copy first argument/operand to the output registers
31 movw ax, [sp+4]
32 movw r8, ax
33 movw ax, [sp+6]
34 movw r10, ax
35 movw ax, [sp+8]
36 movw r12, ax
37 movw ax, [sp+10]
38 movw r14, ax
39
40 ; use 16-bit compares from the most significant words downto the least significant ones
41 movw ax, [sp+18]
42 cmpw ax, r14
43 xor1 CY, a.7 ; first compare accounts for the
44 xor1 CY, r15.7 ; sign bits of the two operands
45 bc $.L1
46 bnz $.L2
47
48 movw ax, [sp+16]
49 cmpw ax, r12
50 bc $.L1
51 bnz $.L2
52
53 movw ax, [sp+14]
54 cmpw ax, r10
55 bc $.L1
56 bnz $.L2
57
58 movw ax, [sp+12]
59 cmpw ax, r8
60 bc $.L1
61 ret
62
63 .L1:
64 ; copy second argument/operand to the output registers
65 movw ax, [sp+12]
66 movw r8, ax
67 movw ax, [sp+14]
68 movw r10, ax
69 movw ax, [sp+16]
70 movw r12, ax
71 movw ax, [sp+18]
72 movw r14, ax
73 .L2:
74 ret
75
76 END_FUNC ___smindi3