| /* Pentium __mpn_add_n -- Add two limb vectors of the same length > 0 and store |
| sum in a third limb vector. |
| Copyright (C) 1992,94,95,96,97,98,2000,2005 Free Software Foundation, Inc. |
| 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 2.1 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 |
| along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| MA 02111-1307, USA. */ |
| |
| #include "sysdep.h" |
| #include "asm-syntax.h" |
| #include "bp-sym.h" |
| #include "bp-asm.h" |
| |
| #define PARMS LINKAGE+16 /* space for 4 saved regs */ |
| #define RES PARMS |
| #define S1 RES+PTR_SIZE |
| #define S2 S1+PTR_SIZE |
| #define SIZE S2+PTR_SIZE |
| |
| .text |
| ENTRY (BP_SYM (__mpn_add_n)) |
| ENTER |
| |
| pushl %edi |
| cfi_adjust_cfa_offset (4) |
| pushl %esi |
| cfi_adjust_cfa_offset (4) |
| pushl %ebp |
| cfi_adjust_cfa_offset (4) |
| pushl %ebx |
| cfi_adjust_cfa_offset (4) |
| |
| movl RES(%esp),%edi |
| cfi_rel_offset (edi, 12) |
| movl S1(%esp),%esi |
| cfi_rel_offset (esi, 8) |
| movl S2(%esp),%ebx |
| cfi_rel_offset (ebx, 0) |
| movl SIZE(%esp),%ecx |
| #if __BOUNDED_POINTERS__ |
| shll $2, %ecx /* convert limbs to bytes */ |
| CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ecx) |
| CHECK_BOUNDS_BOTH_WIDE (%esi, S1(%esp), %ecx) |
| CHECK_BOUNDS_BOTH_WIDE (%ebx, S2(%esp), %ecx) |
| shrl $2, %ecx |
| #endif |
| movl (%ebx),%ebp |
| cfi_rel_offset (ebp, 4) |
| |
| decl %ecx |
| movl %ecx,%edx |
| shrl $3,%ecx |
| andl $7,%edx |
| testl %ecx,%ecx /* zero carry flag */ |
| jz L(end) |
| pushl %edx |
| cfi_adjust_cfa_offset (4) |
| |
| ALIGN (3) |
| L(oop): movl 28(%edi),%eax /* fetch destination cache line */ |
| leal 32(%edi),%edi |
| |
| L(1): movl (%esi),%eax |
| movl 4(%esi),%edx |
| adcl %ebp,%eax |
| movl 4(%ebx),%ebp |
| adcl %ebp,%edx |
| movl 8(%ebx),%ebp |
| movl %eax,-32(%edi) |
| movl %edx,-28(%edi) |
| |
| L(2): movl 8(%esi),%eax |
| movl 12(%esi),%edx |
| adcl %ebp,%eax |
| movl 12(%ebx),%ebp |
| adcl %ebp,%edx |
| movl 16(%ebx),%ebp |
| movl %eax,-24(%edi) |
| movl %edx,-20(%edi) |
| |
| L(3): movl 16(%esi),%eax |
| movl 20(%esi),%edx |
| adcl %ebp,%eax |
| movl 20(%ebx),%ebp |
| adcl %ebp,%edx |
| movl 24(%ebx),%ebp |
| movl %eax,-16(%edi) |
| movl %edx,-12(%edi) |
| |
| L(4): movl 24(%esi),%eax |
| movl 28(%esi),%edx |
| adcl %ebp,%eax |
| movl 28(%ebx),%ebp |
| adcl %ebp,%edx |
| movl 32(%ebx),%ebp |
| movl %eax,-8(%edi) |
| movl %edx,-4(%edi) |
| |
| leal 32(%esi),%esi |
| leal 32(%ebx),%ebx |
| decl %ecx |
| jnz L(oop) |
| |
| popl %edx |
| cfi_adjust_cfa_offset (-4) |
| L(end): |
| decl %edx /* test %edx w/o clobbering carry */ |
| js L(end2) |
| incl %edx |
| L(oop2): |
| leal 4(%edi),%edi |
| movl (%esi),%eax |
| adcl %ebp,%eax |
| movl 4(%ebx),%ebp |
| movl %eax,-4(%edi) |
| leal 4(%esi),%esi |
| leal 4(%ebx),%ebx |
| decl %edx |
| jnz L(oop2) |
| L(end2): |
| movl (%esi),%eax |
| adcl %ebp,%eax |
| movl %eax,(%edi) |
| |
| sbbl %eax,%eax |
| negl %eax |
| |
| popl %ebx |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (ebx) |
| popl %ebp |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (ebp) |
| popl %esi |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (esi) |
| popl %edi |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (edi) |
| |
| LEAVE |
| ret |
| END (BP_SYM (__mpn_add_n)) |
