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