9bf78f0866
2. Remove the now redundant 32 to 64 register mapping for mp_size_t inputs in Windows assembler
213 lines
4.0 KiB
NASM
213 lines
4.0 KiB
NASM
|
|
; x86-64 mpn_divrem_2 -- Divide an mpn number by a normalized 2-limb number.
|
|
|
|
; Copyright 2007, 2008 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
|
|
; 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
|
|
; your option) any later version.
|
|
|
|
; The GNU MP 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
|
|
|
|
; mp_limb_t mpn_divrem_2(mp_ptr, mp_size_t, mp_ptr, mp_size_t, mp_ptr)
|
|
; rax rdi rsi rdx rcx r8
|
|
; rax rcx rdx r8 r9 [rsp+40]
|
|
|
|
%include 'yasm_mac.inc'
|
|
|
|
BITS 64
|
|
TEXT
|
|
|
|
%define reg_save_list rbx, rbp, rsi, rdi, r12, r13, r14, r15
|
|
|
|
xalign 16
|
|
WIN64_GCC_PROC mpn_divrem_2, 5, frame
|
|
lea rax, [rdx+rcx*8]
|
|
mov r13, rsi
|
|
lea r12, [rax-24]
|
|
mov rbp, rdi
|
|
mov r11, [r8+8]
|
|
mov r9, [rax-8]
|
|
mov r8, [r8]
|
|
mov r10, [rax-16]
|
|
xor r15d, r15d
|
|
cmp r11, r9
|
|
ja .1
|
|
setb dl
|
|
cmp r8, r10
|
|
setbe al
|
|
or dl, al
|
|
jne .10
|
|
.1: lea rbx, [rcx+r13-3]
|
|
test rbx, rbx
|
|
js .14
|
|
mov rdx, r11
|
|
mov rax, -1
|
|
not rdx
|
|
div r11
|
|
mov rdx, r11
|
|
mov rdi, rax
|
|
imul rdx, rax
|
|
mov r14, rdx
|
|
mul r8
|
|
mov rcx, rdx
|
|
mov rdx, -1
|
|
add r14, r8
|
|
adc rdx, 0
|
|
add r14, rcx
|
|
adc rdx, 0
|
|
js .3
|
|
.2: dec rdi
|
|
sub r14, r11
|
|
sbb rdx, 0
|
|
jns .2
|
|
.3:
|
|
|
|
%ifdef NEW
|
|
|
|
lea rbp, [rbp+rbx*8]
|
|
mov rcx, rbx
|
|
mov rbx, r9
|
|
mov r9, rdi
|
|
mov r14, r10
|
|
mov rsi, r11
|
|
neg rsi
|
|
|
|
xalign 16
|
|
.4: mov rax, r9
|
|
mul rbx
|
|
add rax, r14
|
|
mov r10, rax
|
|
adc rdx, rbx
|
|
mov rdi, rdx
|
|
imul rdx, rsi
|
|
mov rax, r8
|
|
lea rbx, [rdx+r14]
|
|
mul rdi
|
|
xor r14d, r14d
|
|
cmp r13, rcx
|
|
jg .5
|
|
mov r14, [r12]
|
|
sub r12, 8
|
|
.5: sub r14, r8
|
|
sbb rbx, r11
|
|
sub r14, rax
|
|
sbb rbx, rdx
|
|
inc rdi
|
|
xor edx, edx
|
|
cmp rbx, r10
|
|
mov rax, r8
|
|
adc rdx, -1
|
|
add rdi, rdx
|
|
and rax, rdx
|
|
and rdx, r11
|
|
add r14, rax
|
|
adc rbx, rdx
|
|
cmp rbx, r11
|
|
jae .11
|
|
.6: mov [rbp], rdi
|
|
sub rbp, 8
|
|
dec rcx
|
|
jns .4
|
|
|
|
mov r10, r14
|
|
mov r9, rbx
|
|
|
|
%else
|
|
|
|
lea rbp, [rbp+rbx*8]
|
|
mov rcx, rbx
|
|
mov rax, r9
|
|
mov rsi, r10
|
|
|
|
xalign 16
|
|
.7: mov r14, rax
|
|
mul rdi
|
|
mov r9, r11
|
|
add rax, rsi
|
|
mov rbx, rax
|
|
adc rdx, r14
|
|
lea r10, [rdx+1]
|
|
mov rax, rdx
|
|
imul r9, rdx
|
|
sub rsi, r9
|
|
xor r9d, r9d
|
|
mul r8
|
|
cmp r13, rcx
|
|
jg .8
|
|
mov r9, [r12]
|
|
sub r12, 8
|
|
.8: sub r9, r8
|
|
sbb rsi, r11
|
|
sub r9, rax
|
|
sbb rsi, rdx
|
|
cmp rsi, rbx
|
|
sbb rax, rax
|
|
not rax
|
|
add r10, rax
|
|
mov rbx, r8
|
|
and rbx, rax
|
|
and rax, r11
|
|
add r9, rbx
|
|
adc rax, rsi
|
|
cmp r11, rax
|
|
jbe .12
|
|
.9: mov [rbp], r10
|
|
sub rbp, 8
|
|
mov rsi, r9
|
|
dec rcx
|
|
jns .7
|
|
|
|
mov r10, rsi
|
|
mov r9, rax
|
|
|
|
%endif
|
|
|
|
jmp .14
|
|
|
|
.10:inc r15d
|
|
sub r10, r8
|
|
sbb r9, r11
|
|
jmp .1
|
|
|
|
%ifdef NEW
|
|
|
|
.11:seta dl
|
|
cmp r14, r8
|
|
setae al
|
|
orb al, dl
|
|
je .6
|
|
inc rdi
|
|
sub r14, r8
|
|
sbb rbx, r11
|
|
jmp .6
|
|
|
|
%else
|
|
|
|
.12:jb .13
|
|
cmp r9, r8
|
|
jb .9
|
|
.13:inc r10
|
|
sub r9, r8
|
|
sbb rax, r11
|
|
jmp .9
|
|
|
|
%endif
|
|
|
|
.14:mov [r12+8], r10
|
|
mov [r12+16], r9
|
|
mov rax, r15
|
|
WIN64_GCC_END
|
|
|
|
end
|