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/* Pentium __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
the result from a second limb vector.
Copyright (C) 1992-2024 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,
see <https://www.gnu.org/licenses/>. */
#include "sysdep.h"
#include "asm-syntax.h"
#define PARMS 4+16 /* space for 4 saved regs */
#define RES PARMS
#define S1 RES+4
#define SIZE S1+4
#define S2LIMB SIZE+4
#define res_ptr edi
#define s1_ptr esi
#define size ecx
#define s2_limb ebx
.text
ENTRY (__mpn_submul_1)
pushl %res_ptr
cfi_adjust_cfa_offset (4)
pushl %s1_ptr
cfi_adjust_cfa_offset (4)
pushl %ebp
cfi_adjust_cfa_offset (4)
pushl %s2_limb
cfi_adjust_cfa_offset (4)
movl RES(%esp), %res_ptr
cfi_rel_offset (res_ptr, 12)
movl S1(%esp), %s1_ptr
cfi_rel_offset (s1_ptr, 8)
movl SIZE(%esp), %size
movl S2LIMB(%esp), %s2_limb
cfi_rel_offset (s2_limb, 0)
leal (%res_ptr,%size,4), %res_ptr
leal (%s1_ptr,%size,4), %s1_ptr
negl %size
xorl %ebp, %ebp
cfi_rel_offset (ebp, 4)
ALIGN (3)
L(oop): adcl $0, %ebp
movl (%s1_ptr,%size,4), %eax
mull %s2_limb
addl %ebp, %eax
movl (%res_ptr,%size,4), %ebp
adcl $0, %edx
subl %eax, %ebp
movl %ebp, (%res_ptr,%size,4)
incl %size
movl %edx, %ebp
jnz L(oop)
adcl $0, %ebp
movl %ebp, %eax
popl %s2_limb
cfi_adjust_cfa_offset (-4)
cfi_restore (s2_limb)
popl %ebp
cfi_adjust_cfa_offset (-4)
cfi_restore (ebp)
popl %s1_ptr
cfi_adjust_cfa_offset (-4)
cfi_restore (s1_ptr)
popl %res_ptr
cfi_adjust_cfa_offset (-4)
cfi_restore (res_ptr)
ret
#undef size
END (__mpn_submul_1)
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