mpir/mpn/x86_64w/divrem_euclidean_qr_1.asm

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; x86-64 mpn_divrem_euclidean_qr_1 -- mpn by limb division.
; Copyright 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
; Copyright Brian Gladman 2010 (Conversion to yasm format)
; This file is part of the GNU MP Library.
; The GNU MP Library is free software; you can redistribute it and/or modify
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; it under the terms of the GNU Lesser General Public License as published
; by the Free Software Foundation; either version 3 of the License, or (at
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; your option) any later version.
; The GNU MP Library is distributed in the hope that it will be useful, but
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; 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.
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; You should have received a copy of the GNU Lesser General Public License
; mp_limb_t mpn_divrem_euclidean_qr_1(mp_ptr, mp_size_t, mp_ptr, mp_size_t, mp_limb_t)
; mp_limb_t mpn_preinv_divrem_1(mp_ptr, mp_size_t, mp_ptr, mp_size_t, mp_limb_t, mp_limb_t, int)
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%include 'yasm_mac.inc'
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BITS 64
TEXT
%define reg_save_list rbx, rbp, rsi, rdi, r12, r13
%define SPECIAL_CODE_FOR_NORMALIZED_DIVISOR
xalign 16
WIN64_GCC_PROC mpn_divrem_euclidean_qr_1, 5, frame
xor eax, eax
mov r12, rsi
mov rbx, rcx
add rcx, rsi
mov rsi, rdx
je .17
lea rdi, [rdi+rcx*8-8]
xor ebp, ebp
%ifdef SPECIAL_CODE_FOR_NORMALIZED_DIVISOR
test r8, r8
jns .6
test rbx, rbx
je .1
mov rbp, [rsi+rbx*8-8]
dec rbx
mov rax, rbp
sub rbp, r8
cmovb rbp, rax
sbb eax, eax
inc eax
mov [rdi], rax
lea rdi, [rdi-8]
.1: mov rdx, r8
mov rax, -1
not rdx
div r8
mov r9, rax
mov rax, rbp
jmp .4
xalign 16
.2: mov r10, [rsi+rbx*8]
lea rbp, [rax+1]
mul r9
add rax, r10
adc rdx, rbp
mov rbp, rax
mov r13, rdx
imul rdx, r8
sub r10, rdx
mov rax, r8
add rax, r10
cmp r10, rbp
cmovb rax, r10
adc r13, -1
cmp rax, r8
jae .5
.3: mov [rdi], r13
sub rdi, 8
.4: dec rbx
jns .2
xor ecx, ecx
jmp .14
.5: sub rax, r8
inc r13
jmp .3
%endif
.6: test rbx, rbx
je .7
mov rax, [rsi+rbx*8-8]
cmp rax, r8
jae .7
mov [rdi], rbp
mov rbp, rax
lea rdi, [rdi-8]
je .17
dec rbx
.7: bsr rcx, r8
not ecx
sal r8, cl
sal rbp, cl
mov rdx, r8
mov rax, -1
not rdx
div r8
test rbx, rbx
mov r9, rax
mov rax, rbp
je .14
mov rbp, [rsi+rbx*8-8]
shr rax, cl
shld rax, rbp, cl
sub rbx, 2
js .10
xalign 16
.8: nop
mov r10, [rsi+rbx*8]
lea r11, [rax+1]
shld rbp, r10, cl
mul r9
add rax, rbp
adc rdx, r11
mov r11, rax
mov r13, rdx
imul rdx, r8
sub rbp, rdx
mov rax, r8
add rax, rbp
cmp rbp, r11
cmovb rax, rbp
adc r13, -1
cmp rax, r8
jae .12
.9: mov [rdi], r13
sub rdi, 8
dec rbx
mov rbp, r10
jns .8
.10:lea r11, [rax+1]
sal rbp, cl
mul r9
add rax, rbp
adc rdx, r11
mov r11, rax
mov r13, rdx
imul rdx, r8
sub rbp, rdx
mov rax, r8
add rax, rbp
cmp rbp, r11
cmovb rax, rbp
adc r13, -1
cmp rax, r8
jae .13
.11:mov [rdi], r13
sub rdi, 8
jmp .14
.12:sub rax, r8
inc r13
jmp .9
.13:sub rax, r8
inc r13
jmp .11
.14:mov rbp, r8
neg rbp
jmp .16
xalign 16
.15:lea r11, [rax+1]
mul r9
add rdx, r11
mov r11, rax
mov r13, rdx
imul rdx, rbp
mov rax, r8
add rax, rdx
cmp rdx, r11
cmovb rax, rdx
adc r13, -1
mov [rdi], r13
sub rdi, 8
.16:dec r12
jns .15
shr rax, cl
.17:
WIN64_GCC_END
xalign 16
WIN64_GCC_PROC mpn_preinv_divrem_1, 7, frame
xor eax, eax
mov r12, rsi
mov rbx, rcx
add rcx, rsi
mov rsi, rdx
lea rdi, [rdi+rcx*8-8]
test r8, r8
js .3
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mov cl, [rsp+stack_use+0x38]
shl r8, cl
jmp .7
%ifdef SPECIAL_CODE_FOR_NORMALIZED_DIVISOR
xalign 16
.1: mov r10, [rsi+rbx*8]
lea rbp, [rax+1]
mul r9
add rax, r10
adc rdx, rbp
mov rbp, rax
mov r13, rdx
imul rdx, r8
sub r10, rdx
mov rax, r8
add rax, r10
cmp r10, rbp
cmovb rax, r10
adc r13, -1
cmp rax, r8
jae .4
.2: mov [rdi], r13
sub rdi, 8
.3: dec rbx
jns .1
xor ecx, ecx
jmp .14
.4: sub rax, r8
inc r13
jmp .2
%endif
.5: test rbx, rbx
je .6
mov rax, [rsi+rbx*8-8]
cmp rax, r8
jae .6
mov [rdi], rbp
mov rbp, rax
lea rdi, [rdi-8]
je .17
dec rbx
.6: bsr rcx, r8
not ecx
sal r8, cl
sal rbp, cl
mov rdx, r8
mov rax, -1
not rdx
div r8
test rbx, rbx
mov r9, rax
mov rax, rbp
je .14
.7: mov rbp, [rsi+rbx*8-8]
shr rax, cl
shld rax, rbp, cl
sub rbx, 2
js .10
xalign 16
.8: nop
mov r10, [rsi+rbx*8]
lea r11, [rax+1]
shld rbp, r10, cl
mul r9
add rax, rbp
adc rdx, r11
mov r11, rax
mov r13, rdx
imul rdx, r8
sub rbp, rdx
mov rax, r8
add rax, rbp
cmp rbp, r11
cmovb rax, rbp
adc r13, -1
cmp rax, r8
jae .12
.9: mov [rdi], r13
sub rdi, 8
dec rbx
mov rbp, r10
jns .8
.10:lea r11, [rax+1]
sal rbp, cl
mul r9
add rax, rbp
adc rdx, r11
mov r11, rax
mov r13, rdx
imul rdx, r8
sub rbp, rdx
mov rax, r8
add rax, rbp
cmp rbp, r11
cmovb rax, rbp
adc r13, -1
cmp rax, r8
jae .13
.11:mov [rdi], r13
sub rdi, 8
jmp .14
.12:sub rax, r8
inc r13
jmp .9
.13:sub rax, r8
inc r13
jmp .11
.14:mov rbp, r8
neg rbp
jmp .16
xalign 16
.15:lea r11, [rax+1]
mul r9
add rdx, r11
mov r11, rax
mov r13, rdx
imul rdx, rbp
mov rax, r8
add rax, rdx
cmp rdx, r11
cmovb rax, rdx
adc r13, -1
mov [rdi], r13
sub rdi, 8
.16:dec r12
jns .15
shr rax, cl
.17:
WIN64_GCC_END
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end