projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 28f540f4 RM |
1 | /* i80386 __mpn_submul_1 -- Multiply a limb vector with a limb and subtract |
| 2 | the result from a second limb vector. | |
| 6d7e8eda | 3 | Copyright (C) 1992-2023 Free Software Foundation, Inc. |
| 5929563f | 4 | This file is part of the GNU MP Library. |
| 28f540f4 | 5 | |
| 5929563f | 6 | The GNU MP Library is free software; you can redistribute it and/or modify |
| 6d84f89a AJ |
7 | it under the terms of the GNU Lesser General Public License as published by |
| 8 | the Free Software Foundation; either version 2.1 of the License, or (at your | |
| 5929563f | 9 | option) any later version. |
| 28f540f4 | 10 | |
| 5929563f UD |
11 | The GNU MP Library is distributed in the hope that it will be useful, but |
| 12 | WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
| 6d84f89a | 13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| 5929563f | 14 | License for more details. |
| 28f540f4 | 15 | |
| 6d84f89a | 16 | You should have received a copy of the GNU Lesser General Public License |
| 59ba27a6 | 17 | along with the GNU MP Library; see the file COPYING.LIB. If not, |
| 5a82c748 | 18 | see <https://www.gnu.org/licenses/>. */ |
| 28f540f4 | 19 | |
| 28f540f4 RM |
20 | #include "sysdep.h" |
| 21 | #include "asm-syntax.h" | |
| 3f02f778 | 22 | |
| 2366713d | 23 | #define PARMS 4+16 /* space for 4 saved regs */ |
| 3f02f778 | 24 | #define RES PARMS |
| 2366713d JM |
25 | #define S1 RES+4 |
| 26 | #define SIZE S1+4 | |
| 3f02f778 | 27 | #define S2LIMB SIZE+4 |
| 28f540f4 RM |
28 | |
| 29 | #define res_ptr edi | |
| 30 | #define s1_ptr esi | |
| ce37fa88 | 31 | #define sizeP ecx |
| f9e7bbce | 32 | #define s2_limb ebx |
| 28f540f4 | 33 | |
| ae828bc6 | 34 | .text |
| 2366713d | 35 | ENTRY (__mpn_submul_1) |
| 28f540f4 | 36 | |
| 43c81906 | 37 | pushl %edi |
| 1ad9da69 | 38 | cfi_adjust_cfa_offset (4) |
| 43c81906 | 39 | pushl %esi |
| 1ad9da69 | 40 | cfi_adjust_cfa_offset (4) |
| 43c81906 | 41 | pushl %ebp |
| 1ad9da69 | 42 | cfi_adjust_cfa_offset (4) |
| f9e7bbce | 43 | pushl %ebx |
| 1ad9da69 | 44 | cfi_adjust_cfa_offset (4) |
| fee732e5 UD |
45 | cfi_rel_offset (edi, 12) |
| 46 | cfi_rel_offset (esi, 8) | |
| 47 | cfi_rel_offset (ebp, 4) | |
| 48 | cfi_rel_offset (ebx, 0) | |
| 28f540f4 | 49 | |
| 43c81906 GM |
50 | movl RES(%esp), %res_ptr |
| 51 | movl S1(%esp), %s1_ptr | |
| 52 | movl SIZE(%esp), %sizeP | |
| 53 | movl S2LIMB(%esp), %s2_limb | |
| 43c81906 GM |
54 | leal (%res_ptr,%sizeP,4), %res_ptr |
| 55 | leal (%s1_ptr,%sizeP,4), %s1_ptr | |
| 56 | negl %sizeP | |
| f9e7bbce | 57 | xorl %ebp, %ebp |
| 28f540f4 | 58 | ALIGN (3) |
| 5929563f | 59 | L(oop): |
| 43c81906 GM |
60 | movl (%s1_ptr,%sizeP,4), %eax |
| 61 | mull %s2_limb | |
| f9e7bbce | 62 | addl %ebp, %eax |
| 43c81906 GM |
63 | adcl $0, %edx |
| 64 | subl %eax, (%res_ptr,%sizeP,4) | |
| 65 | adcl $0, %edx | |
| f9e7bbce | 66 | movl %edx, %ebp |
| 28f540f4 | 67 | |
| 43c81906 GM |
68 | incl %sizeP |
| 69 | jnz L(oop) | |
| f9e7bbce | 70 | movl %ebp, %eax |
| 28f540f4 | 71 | |
| 43c81906 | 72 | popl %ebx |
| 1ad9da69 UD |
73 | cfi_adjust_cfa_offset (-4) |
| 74 | cfi_restore (ebx) | |
| f9e7bbce | 75 | popl %ebp |
| 1ad9da69 UD |
76 | cfi_adjust_cfa_offset (-4) |
| 77 | cfi_restore (ebp) | |
| 43c81906 | 78 | popl %esi |
| 1ad9da69 UD |
79 | cfi_adjust_cfa_offset (-4) |
| 80 | cfi_restore (esi) | |
| 43c81906 | 81 | popl %edi |
| 1ad9da69 UD |
82 | cfi_adjust_cfa_offset (-4) |
| 83 | cfi_restore (edi) | |
| 3f02f778 | 84 | |
| 28f540f4 | 85 | ret |
| 2366713d | 86 | END (__mpn_submul_1) |