181 lines
3.7 KiB
ArmAsm
181 lines
3.7 KiB
ArmAsm
|
/* Copyright (C) 2008-2022 Free Software Foundation, Inc.
|
||
|
|
Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
|
||
|
|
on behalf of Synopsys Inc.
|
||
|
|
|
||
|
|
This file is part of GCC.
|
||
|
|
|
||
|
|
GCC 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.
|
||
|
|
|
||
|
|
GCC 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/>. */
|
||
|
|
|
||
|
|
/* XMAC schedule: directly back-to-back multiplies stall; the third
|
||
|
|
instruction after a multiply stalls unless it is also a multiply. */
|
||
|
|
#include "arc-ieee-754.h"
|
||
|
|
|
||
|
|
#if 0 /* DEBUG */
|
||
|
|
.global __mulsf3
|
||
|
|
FUNC(__mulsf3)
|
||
|
|
.balign 4
|
||
|
|
__mulsf3:
|
||
|
|
push_s blink
|
||
|
|
push_s r1
|
||
|
|
bl.d __mulsf3_c
|
||
|
|
push_s r0
|
||
|
|
ld_s r1,[sp,4]
|
||
|
|
st_s r0,[sp,4]
|
||
|
|
bl.d __mulsf3_asm
|
||
|
|
pop_s r0
|
||
|
|
pop_s r1
|
||
|
|
pop_s blink
|
||
|
|
cmp r0,r1
|
||
|
|
jeq_s [blink]
|
||
|
|
and r12,r0,r1
|
||
|
|
bic.f 0,0x7f800000,r12
|
||
|
|
bne 0f
|
||
|
|
bmsk.f 0,r0,22
|
||
|
|
bmsk.ne.f r1,r1,22
|
||
|
|
jne_s [blink] ; both NaN -> OK
|
||
|
|
0: bl abort
|
||
|
|
ENDFUNC(__mulsf3)
|
||
|
|
#define __mulsf3 __mulsf3_asm
|
||
|
|
#endif /* DEBUG */
|
||
|
|
|
||
|
|
.balign 4
|
||
|
|
.global __mulsf3
|
||
|
|
FUNC(__mulsf3)
|
||
|
|
__mulsf3:
|
||
|
|
ld.as r9,[pcl,79]; [pcl,((.L7f800000-.+2)/4)]
|
||
|
|
bmsk r4,r1,22
|
||
|
|
bset r2,r0,23
|
||
|
|
asl_s r2,r2,8
|
||
|
|
bset r3,r4,23
|
||
|
|
MPYHU r6,r2,r3
|
||
|
|
and r11,r0,r9
|
||
|
|
breq r11,0,.Ldenorm_dbl0
|
||
|
|
mpyu r7,r2,r3
|
||
|
|
breq r11,r9,.Linf_nan_dbl0
|
||
|
|
and r12,r1,r9
|
||
|
|
asl.f 0,r6,8
|
||
|
|
breq r12,0,.Ldenorm_dbl1
|
||
|
|
.Lpast_denorm:
|
||
|
|
xor_s r0,r0,r1
|
||
|
|
.Lpast_denorm_dbl1:
|
||
|
|
add.pl r6,r6,r6
|
||
|
|
bclr.pl r6,r6,23
|
||
|
|
add.pl.f r7,r7,r7
|
||
|
|
ld.as r4,[pcl,64]; [pcl,((.L7fffffff-.+2)/4)]
|
||
|
|
add.cs r6,r6,1
|
||
|
|
lsr.f 0,r6,1
|
||
|
|
breq r12,r9,.Linf_nan_dbl1
|
||
|
|
add_s r12,r12,r11
|
||
|
|
adc.f 0,r7,r4
|
||
|
|
add_s r12,r12, \
|
||
|
|
-0x3f800000
|
||
|
|
adc.f r8,r6,r12
|
||
|
|
bic r0,r0,r4
|
||
|
|
tst.pl r8,r9
|
||
|
|
min r3,r8,r9
|
||
|
|
jpnz.d [blink]
|
||
|
|
add.pnz r0,r0,r3
|
||
|
|
; infinity or denormal number
|
||
|
|
add.ne.f r3,r3,r3
|
||
|
|
bpnz .Linfinity
|
||
|
|
asr_s r3,r3,23+1
|
||
|
|
bset r6,r6,23
|
||
|
|
sub_s r3,r3,1
|
||
|
|
neg_s r2,r3
|
||
|
|
brhi r2,24,.Lret_r0 ; right shift shift > 24 -> return +-0
|
||
|
|
lsr r2,r6,r2
|
||
|
|
asl r9,r6,r3
|
||
|
|
lsr.f 0,r2,1
|
||
|
|
tst r7,r7
|
||
|
|
add_s r0,r0,r2
|
||
|
|
bset.ne r9,r9,0
|
||
|
|
adc.f 0,r9,r4
|
||
|
|
j_s.d [blink]
|
||
|
|
add.cs r0,r0,1
|
||
|
|
.Linfinity:
|
||
|
|
j_s.d [blink]
|
||
|
|
add_s r0,r0,r9
|
||
|
|
|
||
|
|
.Lret_r0: j_s [blink]
|
||
|
|
|
||
|
|
.balign 4
|
||
|
|
.Linf_nan_dbl0:
|
||
|
|
sub_s r2,r1,1 ; inf/nan * 0 -> nan; inf * nan -> nan (use |r2| >= inf)
|
||
|
|
bic.f 0,r9,r2
|
||
|
|
xor_s r0,r0,r1
|
||
|
|
bclr_s r1,r1,31
|
||
|
|
xor_s r0,r0,r1
|
||
|
|
jne_s [blink]
|
||
|
|
.Lretnan:
|
||
|
|
j_s.d [blink]
|
||
|
|
mov r0,-1
|
||
|
|
.Ldenorm_dbl0_inf_nan_dbl1:
|
||
|
|
bmsk.f 0,r0,30
|
||
|
|
beq_s .Lretnan
|
||
|
|
xor_s r0,r0,r1
|
||
|
|
.Linf_nan_dbl1:
|
||
|
|
xor_s r1,r1,r0
|
||
|
|
bclr_s r1,r1,31
|
||
|
|
j_s.d [blink]
|
||
|
|
xor_s r0,r0,r1
|
||
|
|
|
||
|
|
.balign 4
|
||
|
|
.Ldenorm_dbl0:
|
||
|
|
bclr_s r2,r2,31
|
||
|
|
norm.f r4,r2
|
||
|
|
and r12,r1,r9
|
||
|
|
add_s r2,r2,r2
|
||
|
|
asl r2,r2,r4
|
||
|
|
asl r4,r4,23
|
||
|
|
MPYHU r6,r2,r3
|
||
|
|
breq r12,r9,.Ldenorm_dbl0_inf_nan_dbl1
|
||
|
|
sub.ne.f r12,r12,r4
|
||
|
|
mpyu r7,r2,r3
|
||
|
|
bhi.d .Lpast_denorm
|
||
|
|
asl.f 0,r6,8
|
||
|
|
xor_s r0,r0,r1
|
||
|
|
bmsk r1,r0,30
|
||
|
|
j_s.d [blink]
|
||
|
|
bic_l r0,r0,r1
|
||
|
|
|
||
|
|
.balign 4
|
||
|
|
.Ldenorm_dbl1:
|
||
|
|
norm.f r3,r4
|
||
|
|
xor_s r0,r0,r1
|
||
|
|
sub_s r3,r3,7
|
||
|
|
asl r4,r4,r3
|
||
|
|
sub_s r3,r3,1
|
||
|
|
asl_s r3,r3,23
|
||
|
|
MPYHU r6,r2,r4
|
||
|
|
sub.ne.f r11,r11,r3
|
||
|
|
bmsk r8,r0,30
|
||
|
|
mpyu r7,r2,r4
|
||
|
|
bhi.d .Lpast_denorm_dbl1
|
||
|
|
asl.f 0,r6,8
|
||
|
|
j_s.d [blink]
|
||
|
|
bic r0,r0,r8
|
||
|
|
|
||
|
|
.balign 4
|
||
|
|
.L7f800000:
|
||
|
|
.long 0x7f800000
|
||
|
|
.L7fffffff:
|
||
|
|
.long 0x7fffffff
|
||
|
|
ENDFUNC(__mulsf3)
|