summaryrefslogtreecommitdiff
path: root/libgcc/config/rl78/umindi3.S
blob: 2bbc5e022e9c74806091172a2dc9bd0631873736 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
;   Copyright (C) 2017-2019 Free Software Foundation, Inc.
;   Contributed by Sebastian Perta.
; 
; This file 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 3, or (at your option) any
; later version.
; 
; This file is distributed in the hope that it will be useful, but
; WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
; General Public License for more details.
; 
; Under Section 7 of GPL version 3, you are granted additional
; permissions described in the GCC Runtime Library Exception, version
; 3.1, as published by the Free Software Foundation.
;
; You should have received a copy of the GNU General Public License and
; a copy of the GCC Runtime Library Exception along with this program;
; see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
; <http://www.gnu.org/licenses/>.


#include "vregs.h"

    .text

START_FUNC ___umindi3

    ; copy first argument/operand to the output registers
    movw   ax, [sp+4]
    movw   r8, ax
    movw   ax, [sp+6]
    movw   r10, ax
    movw   ax, [sp+8]
    movw   r12, ax
    movw   ax, [sp+10]
    movw   r14, ax

    ; use 16-bit compares from the most significant words downto the least significant ones
    movw   ax, [sp+18]
    cmpw   ax, r14
    bc     $.L1
    bnz    $.L2

    movw   ax, [sp+16]
    cmpw   ax, r12
    bc     $.L1
    bnz    $.L2

    movw   ax, [sp+14]
    cmpw   ax, r10
    bc     $.L1
    bnz    $.L2

    movw   ax, [sp+12]
    cmpw   ax, r8
    bc     $.L1
    ret

.L1:
    ; copy second argument/operand to the output registers
    movw   ax, [sp+12]
    movw   r8, ax
    movw   ax, [sp+14]
    movw   r10, ax
    movw   ax, [sp+16]
    movw   r12, ax
    movw   ax, [sp+18]
    movw   r14, ax
.L2:
    ret

END_FUNC ___umindi3