| 1 | /* i80386 __mpn_mul_1 -- Multiply a limb vector with a limb and store |
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| 2 | the result in a second limb vector. |
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| 3 | Copyright (C) 1992-2022 Free Software Foundation, Inc. |
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| 4 | This file is part of the GNU MP Library. |
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| 5 | |
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| 6 | The GNU MP Library is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU Lesser General Public License as published by |
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| 8 | the Free Software Foundation; either version 2.1 of the License, or (at your |
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| 9 | option) any later version. |
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| 10 | |
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| 11 | The GNU MP Library is distributed in the hope that it will be useful, but |
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| 12 | WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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| 13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
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| 14 | License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU Lesser General Public License |
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| 17 | along with the GNU MP Library; see the file COPYING.LIB. If not, |
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| 18 | see <https://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #include <sysdep.h> |
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| 21 | #include "asm-syntax.h" |
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| 22 | |
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| 23 | #define PARMS 4+16 /* space for 4 saved regs */ |
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| 24 | #define RES PARMS |
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| 25 | #define S1 RES+4 |
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| 26 | #define SIZE S1+4 |
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| 27 | #define S2LIMB SIZE+4 |
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| 28 | |
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| 29 | #define res_ptr edi |
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| 30 | #define s1_ptr esi |
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| 31 | #define size ecx |
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| 32 | #define s2_limb ebx |
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| 33 | |
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| 34 | .text |
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| 35 | ENTRY (__mpn_mul_1) |
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| 36 | |
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| 37 | pushl %res_ptr |
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| 38 | cfi_adjust_cfa_offset (4) |
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| 39 | pushl %s1_ptr |
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| 40 | cfi_adjust_cfa_offset (4) |
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| 41 | pushl %ebp |
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| 42 | cfi_adjust_cfa_offset (4) |
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| 43 | pushl %s2_limb |
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| 44 | cfi_adjust_cfa_offset (4) |
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| 45 | |
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| 46 | movl RES(%esp), %res_ptr |
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| 47 | cfi_rel_offset (res_ptr, 12) |
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| 48 | movl S1(%esp), %s1_ptr |
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| 49 | cfi_rel_offset (s1_ptr, 8) |
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| 50 | movl SIZE(%esp), %size |
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| 51 | movl S2LIMB(%esp), %s2_limb |
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| 52 | cfi_rel_offset (s2_limb, 0) |
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| 53 | leal (%res_ptr,%size,4), %res_ptr |
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| 54 | leal (%s1_ptr,%size,4), %s1_ptr |
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| 55 | negl %size |
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| 56 | xorl %ebp, %ebp |
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| 57 | cfi_rel_offset (ebp, 4) |
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| 58 | ALIGN (3) |
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| 59 | L(oop): |
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| 60 | movl (%s1_ptr,%size,4), %eax |
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| 61 | mull %s2_limb |
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| 62 | addl %ebp, %eax |
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| 63 | movl %eax, (%res_ptr,%size,4) |
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| 64 | adcl $0, %edx |
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| 65 | movl %edx, %ebp |
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| 66 | |
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| 67 | incl %size |
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| 68 | jnz L(oop) |
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| 69 | movl %ebp, %eax |
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| 70 | |
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| 71 | popl %s2_limb |
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| 72 | cfi_adjust_cfa_offset (-4) |
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| 73 | cfi_restore (s2_limb) |
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| 74 | popl %ebp |
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| 75 | cfi_adjust_cfa_offset (-4) |
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| 76 | cfi_restore (ebp) |
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| 77 | popl %s1_ptr |
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| 78 | cfi_adjust_cfa_offset (-4) |
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| 79 | cfi_restore (s1_ptr) |
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| 80 | popl %res_ptr |
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| 81 | cfi_adjust_cfa_offset (-4) |
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| 82 | cfi_restore (res_ptr) |
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| 83 | |
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| 84 | ret |
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| 85 | #undef size |
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| 86 | END (__mpn_mul_1) |
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| 87 | |
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