crypto/bn/asm/x86w32.asm

   1 ;       Static Name Aliases
   2 ;
   3         TITLE   bn_mulw.c
   4         .386
   5 F_TEXT  SEGMENT  WORD USE16 PUBLIC 'CODE'
   6 F_TEXT  ENDS
   7 _DATA   SEGMENT  WORD USE16 PUBLIC 'DATA'
   8 _DATA   ENDS
   9 CONST   SEGMENT  WORD USE16 PUBLIC 'CONST'
  10 CONST   ENDS
  11 _BSS    SEGMENT  WORD USE16 PUBLIC 'BSS'
  12 _BSS    ENDS
  13 DGROUP  GROUP   CONST, _BSS, _DATA
  14         ASSUME DS: DGROUP, SS: DGROUP
  15 F_TEXT      SEGMENT
  16         ASSUME  CS: F_TEXT
  17         PUBLIC  _bn_mul_add_word
  18 _bn_mul_add_word        PROC FAR
  19 ; Line 58
  20         push    bp
  21         push    bx
  22         push    esi
  23         push    di
  24         push    ds
  25         push    es
  26         mov     bp,sp
  27 ;       w = 28
  28 ;       num = 26
  29 ;       ap = 22
  30 ;       rp = 18
  31         xor     esi,esi                 ;c=0;
  32         mov     di,WORD PTR [bp+18]     ; load r
  33         mov     ds,WORD PTR [bp+20]     ; load r
  34         mov     bx,WORD PTR [bp+22]     ; load a
  35         mov     es,WORD PTR [bp+24]     ; load a
  36         mov     ecx,DWORD PTR [bp+28]   ; load w
  37         mov     bp,WORD PTR [bp+26]     ; load num
  38         shr     bp,1    ; div count by 4 and do groups of 4
  39         shr     bp,1
  40         je      $L555
  41
  42 $L546:
  43         mov     eax,ecx
  44         mul     DWORD PTR es:[bx]       ; w* *a
  45         add     eax,DWORD PTR ds:[di]   ; + *r
  46         adc     edx,0
  47         adc     eax,esi
  48         adc     edx,0
  49         mov     DWORD PTR ds:[di],eax
  50         mov     esi,edx
  51         ;
  52         mov     eax,ecx
  53         mul     DWORD PTR es:[bx+4]     ; w* *a
  54         add     eax,DWORD PTR ds:[di+4] ; + *r
  55         adc     edx,0
  56         adc     eax,esi
  57         adc     edx,0
  58         mov     DWORD PTR ds:[di+4],eax
  59         mov     esi,edx
  60         ;
  61         mov     eax,ecx
  62         mul     DWORD PTR es:[bx+8]     ; w* *a
  63         add     eax,DWORD PTR ds:[di+8] ; + *r
  64         adc     edx,0
  65         adc     eax,esi
  66         adc     edx,0
  67         mov     DWORD PTR ds:[di+8],eax
  68         mov     esi,edx
  69         ;
  70         mov     eax,ecx
  71         mul     DWORD PTR es:[bx+12]    ; w* *a
  72         add     eax,DWORD PTR ds:[di+12]        ; + *r
  73         adc     edx,0
  74         adc     eax,esi
  75         adc     edx,0
  76         mov     DWORD PTR ds:[di+12],eax
  77         mov     esi,edx
  78         ;
  79         add     bx,16
  80         add     di,16
  81         ;
  82         dec     bp
  83         je      $L555
  84         jmp     $L546
  85 ;
  86 ;
  87 $L555:
  88         mov     bp,sp
  89         mov     bp,WORD PTR [bp+26]     ; load num
  90         and     bp,3
  91         dec     bp
  92         js      $L547
  93
  94         mov     eax,ecx
  95         mul     DWORD PTR es:[bx]       ; w* *a
  96         add     eax,DWORD PTR ds:[di]   ; + *r
  97         adc     edx,0
  98         adc     eax,esi
  99         adc     edx,0
 100         mov     DWORD PTR ds:[di],eax
 101         mov     esi,edx
 102         dec     bp
 103         js      $L547                   ; Note that we are now testing for -1
 104         ;
 105         mov     eax,ecx
 106         mul     DWORD PTR es:[bx+4]     ; w* *a
 107         add     eax,DWORD PTR ds:[di+4] ; + *r
 108         adc     edx,0
 109         adc     eax,esi
 110         adc     edx,0
 111         mov     DWORD PTR ds:[di+4],eax
 112         mov     esi,edx
 113         dec     bp
 114         js      $L547
 115         ;
 116         mov     eax,ecx
 117         mul     DWORD PTR es:[bx+8]     ; w* *a
 118         add     eax,DWORD PTR ds:[di+8] ; + *r
 119         adc     edx,0
 120         adc     eax,esi
 121         adc     edx,0
 122         mov     DWORD PTR ds:[di+8],eax
 123         mov     esi,edx
 124 $L547:
 125         mov     eax,esi
 126         mov     edx,esi
 127         shr     edx,16
 128         pop     es
 129         pop     ds
 130         pop     di
 131         pop     esi
 132         pop     bx
 133         pop     bp
 134         ret
 135         nop
 136
 137 _bn_mul_add_word        ENDP
 138         PUBLIC  _bn_mul_word
 139 _bn_mul_word    PROC FAR
 140 ; Line 76
 141         push    bp
 142         push    bx
 143         push    esi
 144         push    di
 145         push    ds
 146         push    es
 147         xor     esi,esi
 148         mov     bp,sp
 149         mov     di,WORD PTR [bp+18]     ; r
 150         mov     ds,WORD PTR [bp+20]
 151         mov     bx,WORD PTR [bp+22]     ; a
 152         mov     es,WORD PTR [bp+24]
 153         mov     ecx,DWORD PTR [bp+28]   ; w
 154         mov     bp,WORD PTR [bp+26]     ; num
 155
 156 $FC743:
 157         mov     eax,ecx
 158         mul     DWORD PTR es:[bx]
 159         add     eax,esi
 160         adc     edx,0
 161         mov     DWORD PTR ds:[di],eax
 162         mov     esi,edx
 163         dec     bp
 164         je      $L764
 165         ;
 166         mov     eax,ecx
 167         mul     DWORD PTR es:[bx+4]
 168         add     eax,esi
 169         adc     edx,0
 170         mov     DWORD PTR ds:[di+4],eax
 171         mov     esi,edx
 172         dec     bp
 173         je      $L764
 174         ;
 175         mov     eax,ecx
 176         mul     DWORD PTR es:[bx+8]
 177         add     eax,esi
 178         adc     edx,0
 179         mov     DWORD PTR ds:[di+8],eax
 180         mov     esi,edx
 181         dec     bp
 182         je      $L764
 183         ;
 184         mov     eax,ecx
 185         mul     DWORD PTR es:[bx+12]
 186         add     eax,esi
 187         adc     edx,0
 188         mov     DWORD PTR ds:[di+12],eax
 189         mov     esi,edx
 190         dec     bp
 191         je      $L764
 192         ;
 193         add     bx,16
 194         add     di,16
 195         jmp     $FC743
 196         nop
 197 $L764:
 198         mov     eax,esi
 199         mov     edx,esi
 200         shr     edx,16
 201         pop     es
 202         pop     ds
 203         pop     di
 204         pop     esi
 205         pop     bx
 206         pop     bp
 207         ret
 208         nop
 209 _bn_mul_word    ENDP
 210         PUBLIC  _bn_sqr_words
 211 _bn_sqr_words   PROC FAR
 212 ; Line 92
 213         push    bp
 214         push    bx
 215         push    si
 216         push    di
 217         push    ds
 218         push    es
 219         mov     bp,sp
 220         mov     si,WORD PTR [bp+16]
 221         mov     ds,WORD PTR [bp+18]
 222         mov     di,WORD PTR [bp+20]
 223         mov     es,WORD PTR [bp+22]
 224         mov     bx,WORD PTR [bp+24]
 225
 226         mov     bp,bx   ; save a memory lookup later
 227         shr     bx,1    ; div count by 4 and do groups of 4
 228         shr     bx,1
 229         je      $L666
 230
 231 $L765:
 232         mov     eax,DWORD PTR es:[di]
 233         mul     eax
 234         mov     DWORD PTR ds:[si],eax
 235         mov     DWORD PTR ds:[si+4],edx
 236         ;
 237         mov     eax,DWORD PTR es:[di+4]
 238         mul     eax
 239         mov     DWORD PTR ds:[si+8],eax
 240         mov     DWORD PTR ds:[si+12],edx
 241         ;
 242         mov     eax,DWORD PTR es:[di+8]
 243         mul     eax
 244         mov     DWORD PTR ds:[si+16],eax
 245         mov     DWORD PTR ds:[si+20],edx
 246         ;
 247         mov     eax,DWORD PTR es:[di+12]
 248         mul     eax
 249         mov     DWORD PTR ds:[si+24],eax
 250         mov     DWORD PTR ds:[si+28],edx
 251         ;
 252         add     di,16
 253         add     si,32
 254         dec     bx
 255         je      $L666
 256         jmp     $L765
 257 $L666:
 258         and     bp,3
 259         dec     bp      ; The copied value of bx (num)
 260         js      $L645
 261         ;
 262         mov     eax,DWORD PTR es:[di]
 263         mul     eax
 264         mov     DWORD PTR ds:[si],eax
 265         mov     DWORD PTR ds:[si+4],edx
 266         dec     bp
 267         js      $L645
 268         ;
 269         mov     eax,DWORD PTR es:[di+4]
 270         mul     eax
 271         mov     DWORD PTR ds:[si+8],eax
 272         mov     DWORD PTR ds:[si+12],edx
 273         dec     bp
 274         js      $L645
 275         ;
 276         mov     eax,DWORD PTR es:[di+8]
 277         mul     eax
 278         mov     DWORD PTR ds:[si+16],eax
 279         mov     DWORD PTR ds:[si+20],edx
 280 $L645:
 281         pop     es
 282         pop     ds
 283         pop     di
 284         pop     si
 285         pop     bx
 286         pop     bp
 287         ret
 288
 289 _bn_sqr_words   ENDP
 290         PUBLIC  _bn_div64
 291 _bn_div64       PROC FAR
 292         push    bp
 293         mov     bp,sp
 294         mov     edx, DWORD PTR [bp+6]
 295         mov     eax, DWORD PTR [bp+10]
 296         div     DWORD PTR [bp+14]
 297         mov     edx,eax
 298         shr     edx,16
 299         pop     bp
 300         ret
 301 _bn_div64       ENDP
 302 F_TEXT  ENDS
 303 END