mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-14 03:30:17 +01:00
349 lines
8.4 KiB
ArmAsm
349 lines
8.4 KiB
ArmAsm
|
/
|
||
|
|
/ ***** BEGIN LICENSE BLOCK *****
|
||
|
|
/ Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
||
|
|
/
|
||
|
|
/ The contents of this file are subject to the Mozilla Public License Version
|
||
|
|
/ 1.1 (the "License"); you may not use this file except in compliance with
|
||
|
|
/ the License. You may obtain a copy of the License at
|
||
|
|
/ http://www.mozilla.org/MPL/
|
||
|
|
/
|
||
|
|
/ Software distributed under the License is distributed on an "AS IS" basis,
|
||
|
|
/ WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||
|
|
/ for the specific language governing rights and limitations under the
|
||
|
|
/ License.
|
||
|
|
/
|
||
|
|
/ The Original Code is the Netscape security libraries.
|
||
|
|
/
|
||
|
|
/ The Initial Developer of the Original Code is
|
||
|
|
/ Netscape Communications Corporation.
|
||
|
|
/ Portions created by the Initial Developer are Copyright (C) 2001
|
||
|
|
/ the Initial Developer. All Rights Reserved.
|
||
|
|
/
|
||
|
|
/ Contributor(s):
|
||
|
|
/
|
||
|
|
/ Alternatively, the contents of this file may be used under the terms of
|
||
|
|
/ either the GNU General Public License Version 2 or later (the "GPL"), or
|
||
|
|
/ the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||
|
|
/ in which case the provisions of the GPL or the LGPL are applicable instead
|
||
|
|
/ of those above. If you wish to allow use of your version of this file only
|
||
|
|
/ under the terms of either the GPL or the LGPL, and not to allow others to
|
||
|
|
/ use your version of this file under the terms of the MPL, indicate your
|
||
|
|
/ decision by deleting the provisions above and replace them with the notice
|
||
|
|
/ and other provisions required by the GPL or the LGPL. If you do not delete
|
||
|
|
/ the provisions above, a recipient may use your version of this file under
|
||
|
|
/ the terms of any one of the MPL, the GPL or the LGPL.
|
||
|
|
/
|
||
|
|
/ ***** END LICENSE BLOCK *****
|
||
|
|
|
||
|
|
/ $Id: mpi_i86pc.s,v 1.2 2006/12/11 09:45:32 gerv%gerv.net Exp $
|
||
|
|
/
|
||
|
|
|
||
|
|
.text
|
||
|
|
|
||
|
|
/ ebp - 36: caller's esi
|
||
|
|
/ ebp - 32: caller's edi
|
||
|
|
/ ebp - 28:
|
||
|
|
/ ebp - 24:
|
||
|
|
/ ebp - 20:
|
||
|
|
/ ebp - 16:
|
||
|
|
/ ebp - 12:
|
||
|
|
/ ebp - 8:
|
||
|
|
/ ebp - 4:
|
||
|
|
/ ebp + 0: caller's ebp
|
||
|
|
/ ebp + 4: return address
|
||
|
|
/ ebp + 8: a argument
|
||
|
|
/ ebp + 12: a_len argument
|
||
|
|
/ ebp + 16: b argument
|
||
|
|
/ ebp + 20: c argument
|
||
|
|
/ registers:
|
||
|
|
/ eax:
|
||
|
|
/ ebx: carry
|
||
|
|
/ ecx: a_len
|
||
|
|
/ edx:
|
||
|
|
/ esi: a ptr
|
||
|
|
/ edi: c ptr
|
||
|
|
.globl s_mpv_mul_d
|
||
|
|
.type s_mpv_mul_d,@function
|
||
|
|
s_mpv_mul_d:
|
||
|
|
push %ebp
|
||
|
|
mov %esp,%ebp
|
||
|
|
sub $28,%esp
|
||
|
|
push %edi
|
||
|
|
push %esi
|
||
|
|
push %ebx
|
||
|
|
movl $0,%ebx / carry = 0
|
||
|
|
mov 12(%ebp),%ecx / ecx = a_len
|
||
|
|
mov 20(%ebp),%edi
|
||
|
|
cmp $0,%ecx
|
||
|
|
je L2 / jmp if a_len == 0
|
||
|
|
mov 8(%ebp),%esi / esi = a
|
||
|
|
cld
|
||
|
|
L1:
|
||
|
|
lodsl / eax = [ds:esi]; esi += 4
|
||
|
|
mov 16(%ebp),%edx / edx = b
|
||
|
|
mull %edx / edx:eax = Phi:Plo = a_i * b
|
||
|
|
|
||
|
|
add %ebx,%eax / add carry (%ebx) to edx:eax
|
||
|
|
adc $0,%edx
|
||
|
|
mov %edx,%ebx / high half of product becomes next carry
|
||
|
|
|
||
|
|
stosl / [es:edi] = ax; edi += 4;
|
||
|
|
dec %ecx / --a_len
|
||
|
|
jnz L1 / jmp if a_len != 0
|
||
|
|
L2:
|
||
|
|
mov %ebx,0(%edi) / *c = carry
|
||
|
|
pop %ebx
|
||
|
|
pop %esi
|
||
|
|
pop %edi
|
||
|
|
leave
|
||
|
|
ret
|
||
|
|
nop
|
||
|
|
|
||
|
|
/ ebp - 36: caller's esi
|
||
|
|
/ ebp - 32: caller's edi
|
||
|
|
/ ebp - 28:
|
||
|
|
/ ebp - 24:
|
||
|
|
/ ebp - 20:
|
||
|
|
/ ebp - 16:
|
||
|
|
/ ebp - 12:
|
||
|
|
/ ebp - 8:
|
||
|
|
/ ebp - 4:
|
||
|
|
/ ebp + 0: caller's ebp
|
||
|
|
/ ebp + 4: return address
|
||
|
|
/ ebp + 8: a argument
|
||
|
|
/ ebp + 12: a_len argument
|
||
|
|
/ ebp + 16: b argument
|
||
|
|
/ ebp + 20: c argument
|
||
|
|
/ registers:
|
||
|
|
/ eax:
|
||
|
|
/ ebx: carry
|
||
|
|
/ ecx: a_len
|
||
|
|
/ edx:
|
||
|
|
/ esi: a ptr
|
||
|
|
/ edi: c ptr
|
||
|
|
.globl s_mpv_mul_d_add
|
||
|
|
.type s_mpv_mul_d_add,@function
|
||
|
|
s_mpv_mul_d_add:
|
||
|
|
push %ebp
|
||
|
|
mov %esp,%ebp
|
||
|
|
sub $28,%esp
|
||
|
|
push %edi
|
||
|
|
push %esi
|
||
|
|
push %ebx
|
||
|
|
movl $0,%ebx / carry = 0
|
||
|
|
mov 12(%ebp),%ecx / ecx = a_len
|
||
|
|
mov 20(%ebp),%edi
|
||
|
|
cmp $0,%ecx
|
||
|
|
je L4 / jmp if a_len == 0
|
||
|
|
mov 8(%ebp),%esi / esi = a
|
||
|
|
cld
|
||
|
|
L3:
|
||
|
|
lodsl / eax = [ds:esi]; esi += 4
|
||
|
|
mov 16(%ebp),%edx / edx = b
|
||
|
|
mull %edx / edx:eax = Phi:Plo = a_i * b
|
||
|
|
|
||
|
|
add %ebx,%eax / add carry (%ebx) to edx:eax
|
||
|
|
adc $0,%edx
|
||
|
|
mov 0(%edi),%ebx / add in current word from *c
|
||
|
|
add %ebx,%eax
|
||
|
|
adc $0,%edx
|
||
|
|
mov %edx,%ebx / high half of product becomes next carry
|
||
|
|
|
||
|
|
stosl / [es:edi] = ax; edi += 4;
|
||
|
|
dec %ecx / --a_len
|
||
|
|
jnz L3 / jmp if a_len != 0
|
||
|
|
L4:
|
||
|
|
mov %ebx,0(%edi) / *c = carry
|
||
|
|
pop %ebx
|
||
|
|
pop %esi
|
||
|
|
pop %edi
|
||
|
|
leave
|
||
|
|
ret
|
||
|
|
nop
|
||
|
|
|
||
|
|
/ ebp - 36: caller's esi
|
||
|
|
/ ebp - 32: caller's edi
|
||
|
|
/ ebp - 28:
|
||
|
|
/ ebp - 24:
|
||
|
|
/ ebp - 20:
|
||
|
|
/ ebp - 16:
|
||
|
|
/ ebp - 12:
|
||
|
|
/ ebp - 8:
|
||
|
|
/ ebp - 4:
|
||
|
|
/ ebp + 0: caller's ebp
|
||
|
|
/ ebp + 4: return address
|
||
|
|
/ ebp + 8: a argument
|
||
|
|
/ ebp + 12: a_len argument
|
||
|
|
/ ebp + 16: b argument
|
||
|
|
/ ebp + 20: c argument
|
||
|
|
/ registers:
|
||
|
|
/ eax:
|
||
|
|
/ ebx: carry
|
||
|
|
/ ecx: a_len
|
||
|
|
/ edx:
|
||
|
|
/ esi: a ptr
|
||
|
|
/ edi: c ptr
|
||
|
|
.globl s_mpv_mul_d_add_prop
|
||
|
|
.type s_mpv_mul_d_add_prop,@function
|
||
|
|
s_mpv_mul_d_add_prop:
|
||
|
|
push %ebp
|
||
|
|
mov %esp,%ebp
|
||
|
|
sub $28,%esp
|
||
|
|
push %edi
|
||
|
|
push %esi
|
||
|
|
push %ebx
|
||
|
|
movl $0,%ebx / carry = 0
|
||
|
|
mov 12(%ebp),%ecx / ecx = a_len
|
||
|
|
mov 20(%ebp),%edi
|
||
|
|
cmp $0,%ecx
|
||
|
|
je L6 / jmp if a_len == 0
|
||
|
|
cld
|
||
|
|
mov 8(%ebp),%esi / esi = a
|
||
|
|
L5:
|
||
|
|
lodsl / eax = [ds:esi]; esi += 4
|
||
|
|
mov 16(%ebp),%edx / edx = b
|
||
|
|
mull %edx / edx:eax = Phi:Plo = a_i * b
|
||
|
|
|
||
|
|
add %ebx,%eax / add carry (%ebx) to edx:eax
|
||
|
|
adc $0,%edx
|
||
|
|
mov 0(%edi),%ebx / add in current word from *c
|
||
|
|
add %ebx,%eax
|
||
|
|
adc $0,%edx
|
||
|
|
mov %edx,%ebx / high half of product becomes next carry
|
||
|
|
|
||
|
|
stosl / [es:edi] = ax; edi += 4;
|
||
|
|
dec %ecx / --a_len
|
||
|
|
jnz L5 / jmp if a_len != 0
|
||
|
|
L6:
|
||
|
|
cmp $0,%ebx / is carry zero?
|
||
|
|
jz L8
|
||
|
|
mov 0(%edi),%eax / add in current word from *c
|
||
|
|
add %ebx,%eax
|
||
|
|
stosl / [es:edi] = ax; edi += 4;
|
||
|
|
jnc L8
|
||
|
|
L7:
|
||
|
|
mov 0(%edi),%eax / add in current word from *c
|
||
|
|
adc $0,%eax
|
||
|
|
stosl / [es:edi] = ax; edi += 4;
|
||
|
|
jc L7
|
||
|
|
L8:
|
||
|
|
pop %ebx
|
||
|
|
pop %esi
|
||
|
|
pop %edi
|
||
|
|
leave
|
||
|
|
ret
|
||
|
|
nop
|
||
|
|
|
||
|
|
/ ebp - 20: caller's esi
|
||
|
|
/ ebp - 16: caller's edi
|
||
|
|
/ ebp - 12:
|
||
|
|
/ ebp - 8: carry
|
||
|
|
/ ebp - 4: a_len local
|
||
|
|
/ ebp + 0: caller's ebp
|
||
|
|
/ ebp + 4: return address
|
||
|
|
/ ebp + 8: pa argument
|
||
|
|
/ ebp + 12: a_len argument
|
||
|
|
/ ebp + 16: ps argument
|
||
|
|
/ ebp + 20:
|
||
|
|
/ registers:
|
||
|
|
/ eax:
|
||
|
|
/ ebx: carry
|
||
|
|
/ ecx: a_len
|
||
|
|
/ edx:
|
||
|
|
/ esi: a ptr
|
||
|
|
/ edi: c ptr
|
||
|
|
|
||
|
|
.globl s_mpv_sqr_add_prop
|
||
|
|
.type s_mpv_sqr_add_prop,@function
|
||
|
|
s_mpv_sqr_add_prop:
|
||
|
|
push %ebp
|
||
|
|
mov %esp,%ebp
|
||
|
|
sub $12,%esp
|
||
|
|
push %edi
|
||
|
|
push %esi
|
||
|
|
push %ebx
|
||
|
|
movl $0,%ebx / carry = 0
|
||
|
|
mov 12(%ebp),%ecx / a_len
|
||
|
|
mov 16(%ebp),%edi / edi = ps
|
||
|
|
cmp $0,%ecx
|
||
|
|
je L11 / jump if a_len == 0
|
||
|
|
cld
|
||
|
|
mov 8(%ebp),%esi / esi = pa
|
||
|
|
L10:
|
||
|
|
lodsl / %eax = [ds:si]; si += 4;
|
||
|
|
mull %eax
|
||
|
|
|
||
|
|
add %ebx,%eax / add "carry"
|
||
|
|
adc $0,%edx
|
||
|
|
mov 0(%edi),%ebx
|
||
|
|
add %ebx,%eax / add low word from result
|
||
|
|
mov 4(%edi),%ebx
|
||
|
|
stosl / [es:di] = %eax; di += 4;
|
||
|
|
adc %ebx,%edx / add high word from result
|
||
|
|
movl $0,%ebx
|
||
|
|
mov %edx,%eax
|
||
|
|
adc $0,%ebx
|
||
|
|
stosl / [es:di] = %eax; di += 4;
|
||
|
|
dec %ecx / --a_len
|
||
|
|
jnz L10 / jmp if a_len != 0
|
||
|
|
L11:
|
||
|
|
cmp $0,%ebx / is carry zero?
|
||
|
|
jz L14
|
||
|
|
mov 0(%edi),%eax / add in current word from *c
|
||
|
|
add %ebx,%eax
|
||
|
|
stosl / [es:edi] = ax; edi += 4;
|
||
|
|
jnc L14
|
||
|
|
L12:
|
||
|
|
mov 0(%edi),%eax / add in current word from *c
|
||
|
|
adc $0,%eax
|
||
|
|
stosl / [es:edi] = ax; edi += 4;
|
||
|
|
jc L12
|
||
|
|
L14:
|
||
|
|
pop %ebx
|
||
|
|
pop %esi
|
||
|
|
pop %edi
|
||
|
|
leave
|
||
|
|
ret
|
||
|
|
nop
|
||
|
|
|
||
|
|
/
|
||
|
|
/ Divide 64-bit (Nhi,Nlo) by 32-bit divisor, which must be normalized
|
||
|
|
/ so its high bit is 1. This code is from NSPR.
|
||
|
|
/
|
||
|
|
/ mp_err s_mpv_div_2dx1d(mp_digit Nhi, mp_digit Nlo, mp_digit divisor,
|
||
|
|
/ mp_digit *qp, mp_digit *rp)
|
||
|
|
|
||
|
|
/ esp + 0: Caller's ebx
|
||
|
|
/ esp + 4: return address
|
||
|
|
/ esp + 8: Nhi argument
|
||
|
|
/ esp + 12: Nlo argument
|
||
|
|
/ esp + 16: divisor argument
|
||
|
|
/ esp + 20: qp argument
|
||
|
|
/ esp + 24: rp argument
|
||
|
|
/ registers:
|
||
|
|
/ eax:
|
||
|
|
/ ebx: carry
|
||
|
|
/ ecx: a_len
|
||
|
|
/ edx:
|
||
|
|
/ esi: a ptr
|
||
|
|
/ edi: c ptr
|
||
|
|
/
|
||
|
|
|
||
|
|
.globl s_mpv_div_2dx1d
|
||
|
|
.type s_mpv_div_2dx1d,@function
|
||
|
|
s_mpv_div_2dx1d:
|
||
|
|
push %ebx
|
||
|
|
mov 8(%esp),%edx
|
||
|
|
mov 12(%esp),%eax
|
||
|
|
mov 16(%esp),%ebx
|
||
|
|
div %ebx
|
||
|
|
mov 20(%esp),%ebx
|
||
|
|
mov %eax,0(%ebx)
|
||
|
|
mov 24(%esp),%ebx
|
||
|
|
mov %edx,0(%ebx)
|
||
|
|
xor %eax,%eax / return zero
|
||
|
|
pop %ebx
|
||
|
|
ret
|
||
|
|
nop
|
||
|
|
|