--- /dev/null
+dnl AMD K7 mpn_mul_1.
+
+dnl Copyright 1999, 2000, 2001, 2002, 2005, 2008 Free Software Foundation,
+dnl Inc.
+dnl
+dnl This file is part of the GNU MP Library.
+dnl
+dnl The GNU MP Library is free software; you can redistribute it and/or
+dnl modify it under the terms of the GNU Lesser General Public License as
+dnl published by the Free Software Foundation; either version 3 of the
+dnl License, or (at your option) any later version.
+dnl
+dnl The GNU MP Library is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+dnl Lesser General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU Lesser General Public License
+dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+
+C cycles/limb
+C P5:
+C P6 model 0-8,10-12)
+C P6 model 9 (Banias)
+C P6 model 13 (Dothan)
+C P4 model 0 (Willamette)
+C P4 model 1 (?)
+C P4 model 2 (Northwood)
+C P4 model 3 (Prescott)
+C P4 model 4 (Nocona)
+C K6:
+C K7: 3.25
+C K8:
+
+C TODO
+C * Improve feed-in and wind-down code. We beat the old code for all n != 1,
+C but we might be able to do even better.
+C * The feed-in code for mul_1c is crude.
+
+ASM_START()
+ TEXT
+ ALIGN(16)
+PROLOGUE(mpn_mul_1c)
+ add $-16, %esp
+ mov %ebp, (%esp)
+ mov %ebx, 4(%esp)
+ mov %esi, 8(%esp)
+ mov %edi, 12(%esp)
+
+ mov 20(%esp), %edi
+ mov 24(%esp), %esi
+ mov 28(%esp), %ebp
+ mov 32(%esp), %ecx
+ mov %ebp, %ebx
+ shr $2, %ebp
+ mov %ebp, 28(%esp)
+ mov (%esi), %eax
+ and $3, %ebx
+ jz L(c0)
+ cmp $2, %ebx
+ mov 36(%esp), %ebx
+ jz L(c2)
+ jg L(c3)
+
+L(c1): lea -4(%edi), %edi
+ mul %ecx
+ test %ebp, %ebp
+ jnz 1f
+ add %ebx, %eax
+ mov %eax, 4(%edi)
+ mov %edx, %eax
+ adc %ebp, %eax
+ jmp L(rt)
+1: add %eax, %ebx
+ mov $0, %ebp
+ adc %edx, %ebp
+ mov 4(%esi), %eax
+ jmp L(1)
+
+L(c2): lea 4(%esi), %esi
+ mul %ecx
+ test %ebp, %ebp
+ mov %ebx, %ebp
+ jnz 2f
+ add %eax, %ebp
+ mov $0, %ebx
+ adc %edx, %ebx
+ mov (%esi), %eax
+ jmp L(cj2)
+2: add %eax, %ebp
+ mov $0, %ebx
+ adc %edx, %ebx
+ mov (%esi), %eax
+ jmp L(2)
+
+L(c3): lea 8(%esi), %esi
+ lea -12(%edi), %edi
+ mul %ecx
+ add %eax, %ebx
+ mov $0, %ebp
+ adc %edx, %ebp
+ mov -4(%esi), %eax
+ incl 28(%esp)
+ jmp L(3)
+
+L(c0): mov 36(%esp), %ebx
+ lea -4(%esi), %esi
+ lea -8(%edi), %edi
+ mul %ecx
+ mov %ebx, %ebp
+ add %eax, %ebp
+ mov $0, %ebx
+ adc %edx, %ebx
+ mov 8(%esi), %eax
+ jmp L(0)
+
+EPILOGUE()
+ ALIGN(16)
+PROLOGUE(mpn_mul_1)
+ add $-16, %esp
+ mov %ebp, (%esp)
+ mov %ebx, 4(%esp)
+ mov %esi, 8(%esp)
+ mov %edi, 12(%esp)
+
+ mov 20(%esp), %edi
+ mov 24(%esp), %esi
+ mov 28(%esp), %ebp
+ mov 32(%esp), %ecx
+ mov %ebp, %ebx
+ shr $2, %ebp
+ mov %ebp, 28(%esp)
+ mov (%esi), %eax
+ and $3, %ebx
+ jz L(b0)
+ cmp $2, %ebx
+ jz L(b2)
+ jg L(b3)
+
+L(b1): lea -4(%edi), %edi
+ mul %ecx
+ test %ebp, %ebp
+ jnz L(gt1)
+ mov %eax, 4(%edi)
+ mov %edx, %eax
+ jmp L(rt)
+L(gt1): mov %eax, %ebx
+ mov %edx, %ebp
+ mov 4(%esi), %eax
+ jmp L(1)
+
+L(b2): lea 4(%esi), %esi
+ mul %ecx
+ test %ebp, %ebp
+ mov %eax, %ebp
+ mov %edx, %ebx
+ mov (%esi), %eax
+ jnz L(2)
+ jmp L(cj2)
+
+L(b3): lea 8(%esi), %esi
+ lea -12(%edi), %edi
+ mul %ecx
+ mov %eax, %ebx
+ mov %edx, %ebp
+ mov -4(%esi), %eax
+ incl 28(%esp)
+ jmp L(3)
+
+L(b0): lea -4(%esi), %esi
+ lea -8(%edi), %edi
+ mul %ecx
+ mov %eax, %ebp
+ mov %edx, %ebx
+ mov 8(%esi), %eax
+ jmp L(0)
+
+ ALIGN(16)
+L(top): mov $0, %ebx
+ adc %edx, %ebx
+L(2): mul %ecx
+ add %eax, %ebx
+ mov %ebp, 0(%edi)
+ mov 4(%esi), %eax
+ mov $0, %ebp
+ adc %edx, %ebp
+L(1): mul %ecx
+ add %eax, %ebp
+ mov 8(%esi), %eax
+ mov %ebx, 4(%edi)
+ mov $0, %ebx
+ adc %edx, %ebx
+L(0): mov %ebp, 8(%edi)
+ mul %ecx
+ add %eax, %ebx
+ mov 12(%esi), %eax
+ lea 16(%esi), %esi
+ mov $0, %ebp
+ adc %edx, %ebp
+L(3): mov %ebx, 12(%edi)
+ mul %ecx
+ lea 16(%edi), %edi
+ add %eax, %ebp
+ decl 28(%esp)
+ mov 0(%esi), %eax
+ jnz L(top)
+
+L(end): mov $0, %ebx
+ adc %edx, %ebx
+L(cj2): mul %ecx
+ add %eax, %ebx
+ mov %ebp, (%edi)
+L(cj1): mov %ebx, 4(%edi)
+ adc $0, %edx
+ mov %edx, %eax
+
+L(rt): mov (%esp), %ebp
+ mov 4(%esp), %ebx
+ mov 8(%esp), %esi
+ mov 12(%esp), %edi
+ add $16, %esp
+ ret
+EPILOGUE()
+ASM_END()
projects / msp430-gcc.git / blobdiff