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|
dnl MIPS64 mpn_divrem_1 -- Divide an mpn number by an unnormalized limb.
dnl Copyright 2003 Free Software Foundation, Inc.
dnl This file is part of the GNU MP Library.
dnl The GNU MP Library is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU Lesser General Public License as published
dnl by the Free Software Foundation; either version 2.1 of the License, or (at
dnl your option) any later version.
dnl The GNU MP Library is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
dnl License for more details.
dnl You should have received a copy of the GNU Lesser General Public License
dnl along with the GNU MP Library; see the file COPYING.LIB. If not, write
dnl to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
dnl Boston, MA 02110-1301, USA.
include(`../config.m4')
C INPUT PARAMETERS
C qp = r4
C qxn = r5
C up = r6
C n = r7
C vl = r8
C cycles/limb
C R4000: ??
C R1x000: 35
C This was generated by gcc, then the code was manually edited. Lots of things
C could be streamlined. It would probably be a good idea to merge the loops
C for normalized and unnormalized divisor, since the shifting stuff is done for
C free in parallel with other operations.
ASM_START()
PROLOGUE(mpn_divrem_1)
dsubu $sp,$sp,32
sd $28,16($sp)
lui $1,%hi(%neg(%gp_rel(__gmpn_divrem_1)))
addiu $1,$1,%lo(%neg(%gp_rel(__gmpn_divrem_1)))
daddu $gp,$1,$25
move $14,$4
move $15,$5
addu $4,$7,$15
bne $4,$0,.L176
move $13,$0
b .L490
move $2,$0
.L491:
b .L229
dli $5,-1
.L176:
sll $2,$4,3
addu $2,$2,-8
dli $3,0x8000000000000000
and $3,$8,$3
beq $3,$0,.L177
addu $14,$14,$2
beq $7,$0,.L494
dsll $2,$8,1
sll $2,$7,3
addu $2,$2,$6
ld $13,-8($2)
addu $7,$7,-1
sltu $2,$13,$8
xori $2,$2,0x1
dsll $2,$2,32
dsra $2,$2,32
dsll $2,$2,32
dsrl $2,$2,32
sd $2,0($14)
addu $14,$14,-8
dsubu $2,$0,$2
and $2,$8,$2
dsubu $13,$13,$2
dsll $2,$8,1
.L494:
beq $2,$0,.L491
dsrl $9,$8,32
dsubu $4,$0,$8
ddivu $0,$4,$9
dli $2,0xffffffff
and $12,$8,$2
mflo $5
move $11,$5
dmult $11,$9
mflo $3
nop
nop
dmult $11,$12
mflo $10
dli $2,0x100000000
dsubu $4,$4,$3
dmult $4,$2
mflo $4
sltu $3,$4,$10
beql $3,$0,.L495
dsubu $4,$4,$10
daddu $4,$4,$8
sltu $2,$4,$8
bne $2,$0,.L248
dsubu $11,$11,1
sltu $2,$4,$10
beql $2,$0,.L495
dsubu $4,$4,$10
dsubu $11,$11,1
daddu $4,$4,$8
.L248:
dsubu $4,$4,$10
.L495:
ddivu $0,$4,$9
mflo $2
move $5,$2
dmult $5,$9
mflo $3
nop
nop
dmult $5,$12
mflo $10
dli $2,0x100000000
dsubu $4,$4,$3
dmult $4,$2
mflo $4
sltu $3,$4,$10
beq $3,$0,.L504
daddu $4,$4,$8
sltu $2,$4,$8
bne $2,$0,.L251
dsubu $5,$5,1
sltu $2,$4,$10
bnel $2,$0,.L251
dsubu $5,$5,1
.L251:
dli $2,0x100000000
.L504:
dmult $11,$2
mflo $2
or $5,$2,$5
.L229:
addu $7,$7,-1
bltz $7,.L257
addu $25,$15,-1
sll $2,$7,3
addu $6,$2,$6
.Loop1:
ld $11,0($6)
dmultu $13,$5
mfhi $10
daddu $10,$10,$13
nop
dmultu $10,$8
mflo $2
mfhi $9
dsubu $2,$11,$2
dsubu $3,$13,$9
sltu $9,$11,$2
dsubu $9,$3,$9
beq $9,$0,.L271
move $4,$2
dsubu $2,$4,$8
sltu $3,$4,$2
move $4,$2
beq $9,$3,.L271
daddu $10,$10,1
dsubu $4,$4,$8
daddu $10,$10,1
.L271: sltu $2,$4,$8
bne $2,$0,.L496
move $13,$4
dsubu $4,$4,$8
daddu $10,$10,1
move $13,$4
.L496: sd $10,0($14)
addu $14,$14,-8
addu $7,$7,-1
bgez $7,.Loop1
addu $6,$6,-8
.L257:
move $7,$25
bltz $7,.L490
move $2,$13
.Loop2:
dmultu $13,$5
mfhi $9
daddu $9,$9,$13
nop
dmultu $9,$8
mflo $2
mfhi $6
dsubu $2,$0,$2
dsubu $3,$13,$6
sltu $6,$0,$2
dsubu $6,$3,$6
beq $6,$0,.L295
move $4,$2
dsubu $2,$4,$8
sltu $3,$4,$2
move $4,$2
beq $6,$3,.L295
daddu $9,$9,1
dsubu $4,$4,$8
daddu $9,$9,1
.L295: sltu $2,$4,$8
bne $2,$0,.L497
move $13,$4
dsubu $4,$4,$8
daddu $9,$9,1
move $13,$4
.L497: sd $9,0($14)
addu $7,$7,-1
bgez $7,.Loop2
addu $14,$14,-8
b .L490
move $2,$13
.L177:
beq $7,$0,.L308
sll $2,$7,3
addu $2,$2,$6
ld $12,-8($2)
sltu $3,$12,$8
beq $3,$0,.L308
addu $4,$4,-1
move $13,$12
sd $0,0($14)
bne $4,$0,.L307
addu $14,$14,-8
b .L490
move $2,$13
.L492:
b .L395
dli $5,-1
.L307:
addu $7,$7,-1
.L308:
dli $5,0x38
dsrl $2,$8,56
andi $2,$2,0xff
la $3,__gmpn_clz_tab
bne $2,$0,.L321
addu $25,$15,-1
dsubu $5,$5,8
.L499:
beql $5,$0,.L498
daddu $5,$5,1
dsll $2,$5,32
dsra $2,$2,32
dsrl $2,$8,$2
andi $2,$2,0xff
beql $2,$0,.L499
dsubu $5,$5,8
.L321:
daddu $5,$5,1
.L498:
dsll $2,$5,32
dsra $2,$2,32
dsrl $2,$8,$2
dsll $2,$2,32
dsra $2,$2,32
addu $2,$2,$3
lbu $4,0($2)
dli $3,0x41
dsubu $3,$3,$4
dsubu $3,$3,$5
dsll $24,$3,32
dsra $24,$24,32
dsll $8,$8,$24
dsll $2,$8,1
beq $2,$0,.L492
dsll $13,$13,$24
dsrl $9,$8,32
dsubu $4,$0,$8
ddivu $0,$4,$9
dli $2,0xffffffff
and $12,$8,$2
mflo $5
move $11,$5
dmult $11,$9
mflo $3
nop
nop
dmult $11,$12
mflo $10
dli $2,0x100000000
dsubu $4,$4,$3
dmult $4,$2
mflo $4
sltu $3,$4,$10
beql $3,$0,.L500
dsubu $4,$4,$10
daddu $4,$4,$8
sltu $2,$4,$8
bne $2,$0,.L414
dsubu $11,$11,1
sltu $2,$4,$10
beql $2,$0,.L500
dsubu $4,$4,$10
dsubu $11,$11,1
daddu $4,$4,$8
.L414:
dsubu $4,$4,$10
.L500:
ddivu $0,$4,$9
mflo $2
move $5,$2
dmult $5,$9
mflo $3
nop
nop
dmult $5,$12
mflo $10
dli $2,0x100000000
dsubu $4,$4,$3
dmult $4,$2
mflo $4
sltu $3,$4,$10
beq $3,$0,.L505
daddu $4,$4,$8
sltu $2,$4,$8
bne $2,$0,.L417
dsubu $5,$5,1
sltu $2,$4,$10
bnel $2,$0,.L417
dsubu $5,$5,1
.L417:
dli $2,0x100000000
.L505:
dmult $11,$2
mflo $2
or $5,$2,$5
.L395:
beq $7,$0,.L422
sll $2,$7,3
addu $2,$2,$6
ld $12,-8($2)
addu $7,$7,-2
li $2,64
subu $2,$2,$24
dsrl $3,$12,$2
bltz $7,.L424
or $13,$13,$3
move $15,$2
sll $2,$7,3
addu $6,$2,$6
.Loop3:
ld $11,0($6)
dmultu $13,$5
mfhi $9
daddu $9,$9,$13
nop
dmultu $9,$8
mflo $4
mfhi $10
dsll $3,$12,$24
dsrl $2,$11,$15
or $3,$3,$2
dsubu $4,$3,$4
dsubu $2,$13,$10
sltu $10,$3,$4
dsubu $10,$2,$10
beq $10,$0,.L438
dsubu $2,$4,$8
sltu $3,$4,$2
move $4,$2
beq $10,$3,.L438
daddu $9,$9,1
dsubu $4,$4,$8
daddu $9,$9,1
.L438: sltu $2,$4,$8
bne $2,$0,.L501
move $13,$4
dsubu $4,$4,$8
daddu $9,$9,1
move $13,$4
.L501: sd $9,0($14)
addu $14,$14,-8
move $12,$11
addu $7,$7,-1
bgez $7,.Loop3
addu $6,$6,-8
.L424:
dmultu $13,$5
mfhi $7
daddu $7,$7,$13
nop
dmultu $7,$8
mflo $2
mfhi $6
dsll $3,$12,$24
dsubu $2,$3,$2
dsubu $4,$13,$6
sltu $6,$3,$2
dsubu $6,$4,$6
beq $6,$0,.L458
move $4,$2
dsubu $2,$4,$8
sltu $3,$4,$2
move $4,$2
beq $6,$3,.L458
daddu $7,$7,1
dsubu $4,$4,$8
daddu $7,$7,1
.L458:
sltu $2,$4,$8
bne $2,$0,.L502
move $13,$4
dsubu $4,$4,$8
daddu $7,$7,1
move $13,$4
.L502:
sd $7,0($14)
addu $14,$14,-8
.L422:
move $7,$25
bltz $7,.L490
dsrl $2,$13,$24
.Loop4:
dmultu $13,$5
mfhi $9
daddu $9,$9,$13
nop
dmultu $9,$8
mflo $2
mfhi $6
dsubu $2,$0,$2
dsubu $3,$13,$6
sltu $6,$0,$2
dsubu $6,$3,$6
beq $6,$0,.L481
move $4,$2
dsubu $2,$4,$8
sltu $3,$4,$2
move $4,$2
beq $6,$3,.L481
daddu $9,$9,1
dsubu $4,$4,$8
daddu $9,$9,1
.L481: sltu $2,$4,$8
bne $2,$0,.L503
move $13,$4
dsubu $4,$4,$8
daddu $9,$9,1
move $13,$4
.L503: sd $9,0($14)
addu $7,$7,-1
bgez $7,.Loop4
addu $14,$14,-8
dsrl $2,$13,$24
.L490:
ld $28,16($sp)
j $31
daddu $sp,$sp,32
EPILOGUE(mpn_divrem_1)
|
