Annotation of OpenXM_contrib/gmp/mpn/x86/pentium4/sse2/mul_1.asm, Revision 1.1.1.1
1.1 ohara 1: dnl Intel Pentium-4 mpn_mul_1 -- Multiply a limb vector with a limb and store
2: dnl the result in a second limb vector.
3:
4: dnl Copyright 2001, 2002 Free Software Foundation, Inc.
5: dnl
6: dnl This file is part of the GNU MP Library.
7: dnl
8: dnl The GNU MP Library is free software; you can redistribute it and/or
9: dnl modify it under the terms of the GNU Lesser General Public License as
10: dnl published by the Free Software Foundation; either version 2.1 of the
11: dnl License, or (at your option) any later version.
12: dnl
13: dnl The GNU MP Library is distributed in the hope that it will be useful,
14: dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
15: dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16: dnl Lesser General Public License for more details.
17: dnl
18: dnl You should have received a copy of the GNU Lesser General Public
19: dnl License along with the GNU MP Library; see the file COPYING.LIB. If
20: dnl not, write to the Free Software Foundation, Inc., 59 Temple Place -
21: dnl Suite 330, Boston, MA 02111-1307, USA.
22:
23: include(`../config.m4')
24:
25:
26: C P4: 4 cycles/limb
27:
28:
29: C mp_limb_t mpn_mul_1 (mp_ptr dst, mp_srcptr src, mp_size_t size,
30: C mp_limb_t multiplier);
31: C mp_limb_t mpn_mul_1c (mp_ptr dst, mp_srcptr src, mp_size_t size,
32: C mp_limb_t multiplier, mp_limb_t carry);
33: C
34: C Only the carry limb propagation is on the dependent chain, hence 4 c/l.
35:
36: defframe(PARAM_CARRY, 20)
37: defframe(PARAM_MULTIPLIER,16)
38: defframe(PARAM_SIZE, 12)
39: defframe(PARAM_SRC, 8)
40: defframe(PARAM_DST, 4)
41:
42: TEXT
43: ALIGN(16)
44: PROLOGUE(mpn_mul_1c)
45: deflit(`FRAME',0)
46: movd PARAM_CARRY, %mm0
47: jmp L(start_1c)
48: EPILOGUE()
49:
50: PROLOGUE(mpn_mul_1)
51: deflit(`FRAME',0)
52: pxor %mm0, %mm0
53: L(start_1c):
54: movl PARAM_SRC, %eax
55: movd PARAM_MULTIPLIER, %mm7
56: movl PARAM_DST, %edx
57: movl PARAM_SIZE, %ecx
58:
59: L(top):
60: C eax src, incrementing
61: C ebx
62: C ecx counter, size iterations
63: C edx dst, incrementing
64: C
65: C mm0 carry limb
66: C mm7 multiplier
67:
68: movd (%eax), %mm1
69: addl $4, %eax
70: pmuludq %mm7, %mm1
71:
72: paddq %mm1, %mm0
73: movd %mm0, (%edx)
74: addl $4, %edx
75:
76: psrlq $32, %mm0
77:
78: subl $1, %ecx
79: jnz L(top)
80:
81:
82: movd %mm0, %eax
83: emms
84: ret
85:
86: EPILOGUE()
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