projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 8f5ca04b RM |
1 | /* Pentium __mpn_mul_1 -- Multiply a limb vector with a limb and store |
| 2 | the result in a second limb vector. | |
| 3 | ||
| 4 | Copyright (C) 1992, 1994 Free Software Foundation, Inc. | |
| 5 | ||
| 6 | This file is part of the GNU MP Library. | |
| 7 | ||
| 8 | The GNU MP Library is free software; you can redistribute it and/or modify | |
| 9 | it under the terms of the GNU Library General Public License as published by | |
| 10 | the Free Software Foundation; either version 2 of the License, or (at your | |
| 11 | option) any later version. | |
| 12 | ||
| 13 | The GNU MP Library is distributed in the hope that it will be useful, but | |
| 14 | WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
| 15 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public | |
| 16 | License for more details. | |
| 17 | ||
| 18 | You should have received a copy of the GNU Library General Public License | |
| 19 | along with the GNU MP Library; see the file COPYING.LIB. If not, write to | |
| 20 | the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 21 | ||
| 22 | /* | |
| 23 | INPUT PARAMETERS | |
| 24 | res_ptr (sp + 4) | |
| 25 | s1_ptr (sp + 8) | |
| 26 | size (sp + 12) | |
| 27 | s2_limb (sp + 16) | |
| 28 | */ | |
| 29 | ||
| 30 | #include "sysdep.h" | |
| 31 | #include "asm-syntax.h" | |
| 32 | ||
| 33 | #define res_ptr edi | |
| 34 | #define s1_ptr esi | |
| 35 | #define size ecx | |
| 36 | #define s2_limb ebp | |
| 37 | ||
| 38 | TEXT | |
| 39 | ALIGN (3) | |
| 40 | GLOBL C_SYMBOL_NAME(__mpn_mul_1) | |
| 41 | C_SYMBOL_NAME(__mpn_mul_1:) | |
| 42 | ||
| 43 | INSN1(push,l ,R(edi)) | |
| 44 | INSN1(push,l ,R(esi)) | |
| 45 | INSN1(push,l ,R(ebx)) | |
| 46 | INSN1(push,l ,R(ebp)) | |
| 47 | ||
| 48 | INSN2(mov,l ,R(res_ptr),MEM_DISP(esp,20)) | |
| 49 | INSN2(mov,l ,R(s1_ptr),MEM_DISP(esp,24)) | |
| 50 | INSN2(mov,l ,R(size),MEM_DISP(esp,28)) | |
| 51 | INSN2(mov,l ,R(s2_limb),MEM_DISP(esp,32)) | |
| 52 | ||
| 53 | INSN2(lea,l ,R(res_ptr),MEM_INDEX(res_ptr,size,4)) | |
| 54 | INSN2(lea,l ,R(s1_ptr),MEM_INDEX(s1_ptr,size,4)) | |
| 55 | INSN1(neg,l ,R(size)) | |
| 56 | INSN2(xor,l ,R(edx),R(edx)) | |
| 57 | ALIGN (3) | |
| 58 | Loop: | |
| 59 | INSN2(mov,l ,R(ebx),R(edx)) | |
| 60 | INSN2(mov,l ,R(eax),MEM_INDEX(s1_ptr,size,4)) | |
| 61 | ||
| 62 | INSN1(mul,l ,R(s2_limb)) | |
| 63 | ||
| 64 | INSN2(add,l ,R(eax),R(ebx)) | |
| 65 | ||
| 66 | INSN2(adc,l ,R(edx),$0) | |
| 67 | INSN2(mov,l ,MEM_INDEX(res_ptr,size,4),R(eax)) | |
| 68 | ||
| 69 | INSN1(inc,l ,R(size)) | |
| 70 | INSN1(jnz, ,Loop) | |
| 71 | ||
| 72 | ||
| 73 | INSN2(mov,l ,R(eax),R(edx)) | |
| 74 | INSN1(pop,l ,R(ebp)) | |
| 75 | INSN1(pop,l ,R(ebx)) | |
| 76 | INSN1(pop,l ,R(esi)) | |
| 77 | INSN1(pop,l ,R(edi)) | |
| 78 | ret |