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
75
|
/* Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include "div_libc.h"
/* 32-bit signed int divide. This is not a normal C function. Argument
registers are t10 and t11, the result goes in t12. Only t12 and AT may
be clobbered.
The FPU can handle all input values except zero. Whee! */
#ifndef EXTEND
#define EXTEND(S,D) sextl S, D
#endif
.text
.align 4
.globl __divl
.type __divl, @function
.usepv __divl, no
cfi_startproc
cfi_return_column (RA)
__divl:
lda sp, -FRAME(sp)
cfi_def_cfa_offset (FRAME)
CALL_MCOUNT
stt $f0, 0(sp)
stt $f1, 8(sp)
beq Y, DIVBYZERO
cfi_rel_offset ($f0, 0)
cfi_rel_offset ($f1, 8)
EXTEND (X, RV)
EXTEND (Y, AT)
stq RV, 16(sp)
stq AT, 24(sp)
ldt $f0, 16(sp)
ldt $f1, 24(sp)
cvtqt $f0, $f0
cvtqt $f1, $f1
divt/c $f0, $f1, $f0
cvttq/c $f0, $f0
stt $f0, 16(sp)
ldt $f0, 0(sp)
ldt $f1, 8(sp)
ldl RV, 16(sp)
lda sp, FRAME(sp)
cfi_restore ($f0)
cfi_restore ($f1)
cfi_def_cfa_offset (0)
ret $31, (RA), 1
cfi_endproc
.size __divl, .-__divl
DO_DIVBYZERO
|
