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574 lines
14 KiB
ArmAsm
574 lines
14 KiB
ArmAsm
#
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# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is the Netscape security libraries.
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#
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# The Initial Developer of the Original Code is
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# Netscape Communications Corporation.
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# Portions created by the Initial Developer are Copyright (C) 2000
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either the GNU General Public License Version 2 or later (the "GPL"), or
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# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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# $Id: mpi_x86_os2.s,v 1.1 2009/06/04 23:53:42 julien.pierre.boogz%sun.com Exp $
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#
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.data
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.align 4
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#
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# -1 means to call _s_mpi_is_sse to determine if we support sse
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# instructions.
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# 0 means to use x86 instructions
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# 1 means to use sse2 instructions
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.type is_sse,@object
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.size is_sse,4
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is_sse: .long -1
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#
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# sigh, handle the difference between -fPIC and not PIC
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# default to pic, since this file seems to be exclusively
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# linux right now (solaris uses mpi_i86pc.s and windows uses
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# mpi_x86_asm.c)
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#
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#.ifndef NO_PIC
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#.macro GET var,reg
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# movl \var@GOTOFF(%ebx),\reg
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#.endm
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#.macro PUT reg,var
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# movl \reg,\var@GOTOFF(%ebx)
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#.endm
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#.else
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.macro GET var,reg
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movl \var,\reg
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.endm
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.macro PUT reg,var
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movl \reg,\var
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.endm
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#.endif
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.text
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# ebp - 36: caller's esi
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# ebp - 32: caller's edi
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# ebp - 28:
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# ebp - 24:
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# ebp - 20:
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# ebp - 16:
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# ebp - 12:
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# ebp - 8:
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# ebp - 4:
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# ebp + 0: caller's ebp
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# ebp + 4: return address
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# ebp + 8: a argument
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# ebp + 12: a_len argument
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# ebp + 16: b argument
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# ebp + 20: c argument
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# registers:
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# eax:
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# ebx: carry
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# ecx: a_len
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# edx:
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# esi: a ptr
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# edi: c ptr
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.globl _s_mpv_mul_d
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.type _s_mpv_mul_d,@function
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_s_mpv_mul_d:
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GET is_sse,%eax
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cmp $0,%eax
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je _s_mpv_mul_d_x86
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jg _s_mpv_mul_d_sse2
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call _s_mpi_is_sse2
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PUT %eax,is_sse
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cmp $0,%eax
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jg _s_mpv_mul_d_sse2
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_s_mpv_mul_d_x86:
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push %ebp
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mov %esp,%ebp
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sub $28,%esp
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push %edi
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push %esi
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push %ebx
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movl $0,%ebx # carry = 0
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mov 12(%ebp),%ecx # ecx = a_len
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mov 20(%ebp),%edi
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cmp $0,%ecx
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je 2f # jmp if a_len == 0
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mov 8(%ebp),%esi # esi = a
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cld
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1:
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lodsl # eax = [ds:esi]; esi += 4
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mov 16(%ebp),%edx # edx = b
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mull %edx # edx:eax = Phi:Plo = a_i * b
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add %ebx,%eax # add carry (%ebx) to edx:eax
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adc $0,%edx
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mov %edx,%ebx # high half of product becomes next carry
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stosl # [es:edi] = ax; edi += 4;
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dec %ecx # --a_len
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jnz 1b # jmp if a_len != 0
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2:
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mov %ebx,0(%edi) # *c = carry
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pop %ebx
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pop %esi
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pop %edi
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leave
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ret
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nop
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_s_mpv_mul_d_sse2:
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push %ebp
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mov %esp,%ebp
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push %edi
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push %esi
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psubq %mm2,%mm2 # carry = 0
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mov 12(%ebp),%ecx # ecx = a_len
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movd 16(%ebp),%mm1 # mm1 = b
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mov 20(%ebp),%edi
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cmp $0,%ecx
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je 6f # jmp if a_len == 0
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mov 8(%ebp),%esi # esi = a
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cld
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5:
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movd 0(%esi),%mm0 # mm0 = *a++
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add $4,%esi
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pmuludq %mm1,%mm0 # mm0 = b * *a++
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paddq %mm0,%mm2 # add the carry
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movd %mm2,0(%edi) # store the 32bit result
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add $4,%edi
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psrlq $32, %mm2 # save the carry
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dec %ecx # --a_len
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jnz 5b # jmp if a_len != 0
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6:
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movd %mm2,0(%edi) # *c = carry
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emms
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pop %esi
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pop %edi
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leave
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ret
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nop
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# ebp - 36: caller's esi
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# ebp - 32: caller's edi
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# ebp - 28:
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# ebp - 24:
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# ebp - 20:
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# ebp - 16:
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# ebp - 12:
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# ebp - 8:
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# ebp - 4:
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# ebp + 0: caller's ebp
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# ebp + 4: return address
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# ebp + 8: a argument
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# ebp + 12: a_len argument
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# ebp + 16: b argument
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# ebp + 20: c argument
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# registers:
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# eax:
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# ebx: carry
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# ecx: a_len
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# edx:
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# esi: a ptr
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# edi: c ptr
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.globl _s_mpv_mul_d_add
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.type _s_mpv_mul_d_add,@function
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_s_mpv_mul_d_add:
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GET is_sse,%eax
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cmp $0,%eax
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je _s_mpv_mul_d_add_x86
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jg _s_mpv_mul_d_add_sse2
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call _s_mpi_is_sse2
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PUT %eax,is_sse
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cmp $0,%eax
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jg _s_mpv_mul_d_add_sse2
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_s_mpv_mul_d_add_x86:
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push %ebp
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mov %esp,%ebp
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sub $28,%esp
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push %edi
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push %esi
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push %ebx
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movl $0,%ebx # carry = 0
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mov 12(%ebp),%ecx # ecx = a_len
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mov 20(%ebp),%edi
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cmp $0,%ecx
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je 11f # jmp if a_len == 0
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mov 8(%ebp),%esi # esi = a
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cld
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10:
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lodsl # eax = [ds:esi]; esi += 4
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mov 16(%ebp),%edx # edx = b
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mull %edx # edx:eax = Phi:Plo = a_i * b
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add %ebx,%eax # add carry (%ebx) to edx:eax
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adc $0,%edx
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mov 0(%edi),%ebx # add in current word from *c
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add %ebx,%eax
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adc $0,%edx
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mov %edx,%ebx # high half of product becomes next carry
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stosl # [es:edi] = ax; edi += 4;
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dec %ecx # --a_len
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jnz 10b # jmp if a_len != 0
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11:
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mov %ebx,0(%edi) # *c = carry
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pop %ebx
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pop %esi
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pop %edi
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leave
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ret
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nop
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_s_mpv_mul_d_add_sse2:
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push %ebp
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mov %esp,%ebp
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push %edi
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push %esi
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psubq %mm2,%mm2 # carry = 0
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mov 12(%ebp),%ecx # ecx = a_len
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movd 16(%ebp),%mm1 # mm1 = b
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mov 20(%ebp),%edi
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cmp $0,%ecx
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je 16f # jmp if a_len == 0
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mov 8(%ebp),%esi # esi = a
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cld
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15:
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movd 0(%esi),%mm0 # mm0 = *a++
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add $4,%esi
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pmuludq %mm1,%mm0 # mm0 = b * *a++
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paddq %mm0,%mm2 # add the carry
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movd 0(%edi),%mm0
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paddq %mm0,%mm2 # add the carry
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movd %mm2,0(%edi) # store the 32bit result
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add $4,%edi
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psrlq $32, %mm2 # save the carry
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dec %ecx # --a_len
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jnz 15b # jmp if a_len != 0
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16:
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movd %mm2,0(%edi) # *c = carry
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emms
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pop %esi
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pop %edi
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leave
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ret
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nop
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# ebp - 8: caller's esi
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# ebp - 4: caller's edi
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# ebp + 0: caller's ebp
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# ebp + 4: return address
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# ebp + 8: a argument
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# ebp + 12: a_len argument
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# ebp + 16: b argument
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# ebp + 20: c argument
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# registers:
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# eax:
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# ebx: carry
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# ecx: a_len
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# edx:
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# esi: a ptr
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# edi: c ptr
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.globl _s_mpv_mul_d_add_prop
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.type _s_mpv_mul_d_add_prop,@function
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_s_mpv_mul_d_add_prop:
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GET is_sse,%eax
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cmp $0,%eax
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je _s_mpv_mul_d_add_prop_x86
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jg _s_mpv_mul_d_add_prop_sse2
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call _s_mpi_is_sse2
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PUT %eax,is_sse
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cmp $0,%eax
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jg _s_mpv_mul_d_add_prop_sse2
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_s_mpv_mul_d_add_prop_x86:
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push %ebp
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mov %esp,%ebp
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sub $28,%esp
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push %edi
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push %esi
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push %ebx
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movl $0,%ebx # carry = 0
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mov 12(%ebp),%ecx # ecx = a_len
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mov 20(%ebp),%edi
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cmp $0,%ecx
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je 21f # jmp if a_len == 0
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cld
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mov 8(%ebp),%esi # esi = a
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20:
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lodsl # eax = [ds:esi]; esi += 4
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mov 16(%ebp),%edx # edx = b
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mull %edx # edx:eax = Phi:Plo = a_i * b
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add %ebx,%eax # add carry (%ebx) to edx:eax
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adc $0,%edx
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mov 0(%edi),%ebx # add in current word from *c
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add %ebx,%eax
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adc $0,%edx
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mov %edx,%ebx # high half of product becomes next carry
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stosl # [es:edi] = ax; edi += 4;
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dec %ecx # --a_len
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jnz 20b # jmp if a_len != 0
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21:
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cmp $0,%ebx # is carry zero?
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jz 23f
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mov 0(%edi),%eax # add in current word from *c
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add %ebx,%eax
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stosl # [es:edi] = ax; edi += 4;
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jnc 23f
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22:
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mov 0(%edi),%eax # add in current word from *c
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adc $0,%eax
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stosl # [es:edi] = ax; edi += 4;
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jc 22b
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23:
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pop %ebx
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pop %esi
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pop %edi
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leave
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ret
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nop
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_s_mpv_mul_d_add_prop_sse2:
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push %ebp
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mov %esp,%ebp
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push %edi
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push %esi
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push %ebx
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psubq %mm2,%mm2 # carry = 0
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mov 12(%ebp),%ecx # ecx = a_len
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movd 16(%ebp),%mm1 # mm1 = b
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mov 20(%ebp),%edi
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cmp $0,%ecx
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je 26f # jmp if a_len == 0
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mov 8(%ebp),%esi # esi = a
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cld
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25:
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movd 0(%esi),%mm0 # mm0 = *a++
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movd 0(%edi),%mm3 # fetch the sum
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add $4,%esi
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pmuludq %mm1,%mm0 # mm0 = b * *a++
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paddq %mm0,%mm2 # add the carry
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paddq %mm3,%mm2 # add *c++
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movd %mm2,0(%edi) # store the 32bit result
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add $4,%edi
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psrlq $32, %mm2 # save the carry
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dec %ecx # --a_len
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jnz 25b # jmp if a_len != 0
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26:
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movd %mm2,%ebx
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cmp $0,%ebx # is carry zero?
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jz 28f
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mov 0(%edi),%eax
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add %ebx, %eax
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stosl
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jnc 28f
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27:
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mov 0(%edi),%eax # add in current word from *c
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adc $0,%eax
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stosl # [es:edi] = ax; edi += 4;
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jc 27b
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28:
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emms
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pop %ebx
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pop %esi
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pop %edi
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leave
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ret
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nop
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# ebp - 20: caller's esi
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# ebp - 16: caller's edi
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# ebp - 12:
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# ebp - 8: carry
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# ebp - 4: a_len local
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# ebp + 0: caller's ebp
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# ebp + 4: return address
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# ebp + 8: pa argument
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# ebp + 12: a_len argument
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# ebp + 16: ps argument
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# ebp + 20:
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# registers:
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# eax:
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# ebx: carry
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# ecx: a_len
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# edx:
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# esi: a ptr
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# edi: c ptr
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.globl _s_mpv_sqr_add_prop
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.type _s_mpv_sqr_add_prop,@function
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_s_mpv_sqr_add_prop:
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GET is_sse,%eax
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cmp $0,%eax
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je _s_mpv_sqr_add_prop_x86
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jg _s_mpv_sqr_add_prop_sse2
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call _s_mpi_is_sse2
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PUT %eax,is_sse
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cmp $0,%eax
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jg _s_mpv_sqr_add_prop_sse2
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_s_mpv_sqr_add_prop_x86:
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push %ebp
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mov %esp,%ebp
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sub $12,%esp
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push %edi
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push %esi
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push %ebx
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movl $0,%ebx # carry = 0
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mov 12(%ebp),%ecx # a_len
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mov 16(%ebp),%edi # edi = ps
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cmp $0,%ecx
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je 31f # jump if a_len == 0
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cld
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mov 8(%ebp),%esi # esi = pa
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30:
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lodsl # %eax = [ds:si]; si += 4;
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mull %eax
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add %ebx,%eax # add "carry"
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adc $0,%edx
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mov 0(%edi),%ebx
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add %ebx,%eax # add low word from result
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mov 4(%edi),%ebx
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stosl # [es:di] = %eax; di += 4;
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adc %ebx,%edx # add high word from result
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movl $0,%ebx
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mov %edx,%eax
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adc $0,%ebx
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stosl # [es:di] = %eax; di += 4;
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dec %ecx # --a_len
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jnz 30b # jmp if a_len != 0
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31:
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cmp $0,%ebx # is carry zero?
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jz 34f
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mov 0(%edi),%eax # add in current word from *c
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add %ebx,%eax
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stosl # [es:edi] = ax; edi += 4;
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jnc 34f
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32:
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mov 0(%edi),%eax # add in current word from *c
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adc $0,%eax
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stosl # [es:edi] = ax; edi += 4;
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jc 32b
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34:
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pop %ebx
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pop %esi
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pop %edi
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leave
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ret
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nop
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_s_mpv_sqr_add_prop_sse2:
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push %ebp
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mov %esp,%ebp
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push %edi
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push %esi
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push %ebx
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psubq %mm2,%mm2 # carry = 0
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mov 12(%ebp),%ecx # ecx = a_len
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mov 16(%ebp),%edi
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cmp $0,%ecx
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je 36f # jmp if a_len == 0
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mov 8(%ebp),%esi # esi = a
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cld
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35:
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movd 0(%esi),%mm0 # mm0 = *a
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movd 0(%edi),%mm3 # fetch the sum
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add $4,%esi
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pmuludq %mm0,%mm0 # mm0 = sqr(a)
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paddq %mm0,%mm2 # add the carry
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paddq %mm3,%mm2 # add the low word
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movd 4(%edi),%mm3
|
|
movd %mm2,0(%edi) # store the 32bit result
|
|
psrlq $32, %mm2
|
|
paddq %mm3,%mm2 # add the high word
|
|
movd %mm2,4(%edi) # store the 32bit result
|
|
psrlq $32, %mm2 # save the carry.
|
|
add $8,%edi
|
|
dec %ecx # --a_len
|
|
jnz 35b # jmp if a_len != 0
|
|
36:
|
|
movd %mm2,%ebx
|
|
cmp $0,%ebx # is carry zero?
|
|
jz 38f
|
|
mov 0(%edi),%eax
|
|
add %ebx, %eax
|
|
stosl
|
|
jnc 38f
|
|
37:
|
|
mov 0(%edi),%eax # add in current word from *c
|
|
adc $0,%eax
|
|
stosl # [es:edi] = ax; edi += 4;
|
|
jc 37b
|
|
38:
|
|
emms
|
|
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
|
|
|