wok annotate linld/stuff/src/pipehole.awk @ rev 24564

Add some current_version
author Pascal Bellard <pascal.bellard@slitaz.org>
date Fri Feb 25 18:06:36 2022 +0000 (2022-02-25)
parents 06547d8cf241
children 8db826af003e
rev   line source
pascal@24020 1 BEGIN { hold=0; is386=0; isload=0; isiso=0; istazboot=0; wascall=0; ishimem=0; label="none"; xlabel=""; file="" }
pascal@20458 2 function isnum(n) { return match(n,/^[0-9+-]/) }
pascal@20458 3 {
pascal@20632 4 sub(/segment word public/,"segment byte public")
pascal@20634 5
pascal@22171 6 if (/^ ; $/) next
pascal@21576 7 if (/^@.*:$/ || / endp$/) afterjmp=0
pascal@21791 8 if (/^ \.386p$/) is386=1
pascal@21791 9 if (file == "" && /debug S/) { file=$3; gsub(/\"/,"",file) }
pascal@24034 10 if (/debug S/) {
pascal@24034 11 print " %PAGESIZE 255"
pascal@24034 12 print " include common.inc"
pascal@24034 13 }
pascal@21984 14 if (file == "linld.cpp") {
pascal@24013 15 if (/\[si/ || /si,/ || /,si/) sub(/si/,"di")
pascal@24013 16 else if (/\[di/ || /di,/ || /,di/) sub(/di/,"si")
pascal@21984 17 if (/add di,2/) $0=" scasw ; " $0
pascal@24013 18 if (/bx,di/ || /\[bp-2\]/) next
pascal@24013 19 sub(/\[bx\],0/,"[di],0")
pascal@24067 20 if (/ptr @exit\$qv/) {
pascal@24067 21 if (gotexit) next
pascal@24067 22 print "call_exit:"
pascal@24067 23 gotexit=1
pascal@24067 24 }
pascal@21984 25 if (islinld==1) {
pascal@24013 26 if (/,word.*/) islinld=0
pascal@21984 27 print "; " $0
pascal@24013 28 next
pascal@21984 29 }
pascal@21984 30 if (/^_main proc/) islinld=1
pascal@21984 31 if (/image\|initrd/) islinld=3
pascal@24013 32 if (islinld==3 && /bx,word ptr/) { print "; " $0; next }
pascal@21984 33 if (/fileexist\$qpxzc/) islinld=4
pascal@21984 34 if (islinld==4) {
pascal@24022 35 if (/DGROUP:_heap_top/) next
pascal@23993 36 if (/ax,-1/) {
pascal@23993 37 print " inc ax"
pascal@24013 38 print " mov ax,word ptr [di]"
pascal@23993 39 next
pascal@23993 40 }
pascal@24067 41 if (/ax,word ptr \[/) next
pascal@21984 42 }
pascal@23992 43 if (/buf_cmdline\+1/) {
pascal@23992 44 islinld=5
pascal@23996 45 print " mov bx,offset DGROUP:_buf_cmdline+1"
pascal@23996 46 sub(/offset DGROUP:_buf_cmdline\+1/,"bx")
pascal@23992 47 }
pascal@23804 48 if (islinld==5) {
pascal@23996 49 if (/bx,offset DGROUP:_buf_cmdline/) $0=" dec bx"
pascal@23993 50 if (/ax,word ptr/) next
pascal@23992 51 if (/call/) islinld=0
pascal@23804 52 }
pascal@23996 53 if (/bx,word ptr DGROUP:_cmdstr\+6/) next
pascal@23996 54 if (/_cmdstr\+6,0/) {
pascal@24013 55 print " mov bx,word ptr [si+6]"
pascal@23996 56 $0=" or bx,bx"
pascal@23996 57 }
pascal@24022 58 if (/heap_top \+1;/) islinld=6
pascal@24022 59 if (islinld==6) {
pascal@24022 60 sub(/ax/,"bx")
pascal@24022 61 if (/strcatb/) {
pascal@24022 62 print " dec bx"
pascal@24022 63 islinld=4
pascal@24022 64 }
pascal@24022 65 }
pascal@24564 66 if (/minram>>16/) islinld=7
pascal@24564 67 if (islinld==7) {
pascal@24564 68 if (/endif/) islinld=0
pascal@24564 69 if (/mov/) sub(/ax/,"cx");
pascal@24564 70 if (/;/ || /_memtop/ || /mov/) { print; next }
pascal@24564 71 if (/ax,0/) {
pascal@24564 72 print " jcxz minram_done"
pascal@24564 73 print " cmp cx,dx"
pascal@24564 74 print " ja call_exit"
pascal@24564 75 print "minram_done:"
pascal@24564 76 }
pascal@24564 77 next
pascal@24564 78 }
pascal@24564 79 if (/mincpu > cputype/) islinld=8
pascal@24564 80 if (islinld==8) {
pascal@24564 81 if (/endif/) islinld=0
pascal@24564 82 if (/jbe/) $0=" ja call_exit"
pascal@24564 83 }
pascal@21984 84 } # file == "linld.cpp"
pascal@21791 85 if (file == "himem.cpp") {
pascal@24019 86 if (/sp,bp/ || /pop bp/ || /enter/ || /leave/) next
pascal@21984 87 if (/void load_image/) ishimem=1
pascal@21791 88 if (ishimem == 1 && is386 == 0) {
pascal@21791 89 if (/si\+8\]$/ || /si\+4\]$/ || /si\+16\]$/) next
pascal@21791 90 if (/si\+6\]$/ || /si\+2\]$/ || /si\+14\]$/) sub(/mov dx,/,"les dx,d")
pascal@24013 91 if (/si\+12\],ax/ || /si\+16\],ax/ || /di\+2\],ax/ || /DGROUP:_himem_buf\+2,ax/) sub(/,ax/,",es")
pascal@23996 92 if (/dx,dword ptr \[si\+14\]/ || /DGROUP:_himem_buf,dx/) sub(/dx/,"ax")
pascal@21984 93 }
pascal@21984 94 if (ishimem == 1) {
pascal@21984 95 if (/do \{/) ishimem=2
pascal@24034 96 if (/bx,si/ || /di,ax/ || /push bp/ || /bp,sp/ || /push di/ || /push si/) next
pascal@23996 97 if (/sp,2/ || /bp\+4/) next
pascal@21984 98 }
pascal@21984 99 if (ishimem == 2) {
pascal@21984 100 if (/movzx/) print " cwde"
pascal@23996 101 if (/bp-2/ || /di,ax/ || /bx,di/ || /bx,si/) next
pascal@21984 102 if (/storepage.bufv/) {
pascal@21984 103 print " inc ax"
pascal@21984 104 print " push ax"
pascal@21984 105 }
pascal@21984 106 if (/buf \+= size;/) {
pascal@21984 107 print " pop ax"
pascal@21984 108 }
pascal@23996 109 if (/i\+12/) ishimem=20
pascal@23996 110 }
pascal@23996 111 if (ishimem == 20) {
pascal@24013 112 if (/loadfail/) next
pascal@23996 113 if (/je/) {
pascal@23996 114 print " extrn jmploadfailure"
pascal@23996 115 $0=" jne short jmploadfailure"
pascal@23996 116 }
pascal@23989 117 if (/endp/) ishimem=0
pascal@21791 118 }
pascal@23992 119 if (/@memcpy_image\$qp11image_himem/) next
pascal@24013 120 if (/far last_ditch/) ishimem=3
pascal@23992 121 if (ishimem == 3) {
pascal@23996 122 sub(/DGROUP:_imgs\+4,/,"[si+4],")
pascal@24013 123 if (/bx,di/ || /di,ax/) next
pascal@23992 124 }
pascal@21791 125 } # file == "himem.cpp"
pascal@21791 126 if (file == "load.cpp") {
pascal@23996 127 if (isload != 3 && isload != 6) { # LOAD.LST
pascal@23996 128 if (/,si/ || /si,/ || /\[si/) sub(/si/,"di")
pascal@23996 129 else if (/,di/ || /di,/ || /\[di/) sub(/di/,"si")
pascal@23996 130 }
pascal@23996 131 if (/moverm\(/) isload=16
pascal@23996 132 if (isload != 16 && /bx,si/) next
pascal@23996 133 if (/@moverm/) isload=0
pascal@23992 134 if (/readrm\(m, 0x200/) isload=15
pascal@23992 135 if (isload == 15) { # LOAD.LST
pascal@23996 136 if (/bx,si/) next
pascal@23992 137 if (/call/) isload=0
pascal@23992 138 }
pascal@23989 139 if (/load_image\(/) {
pascal@23989 140 if (isload == 3) isload=13
pascal@23989 141 else isload=14
pascal@23989 142 }
pascal@23989 143 if (isload == 14) { # LOAD.LST
pascal@23996 144 if (/call/) $0=" jmp short load_imagez"
pascal@23989 145 if (/ret/) isload=0
pascal@23989 146 if (/pop/ || /ret/ || /push/) next
pascal@23989 147 }
pascal@23989 148 if (isload == 13) { # LOAD.LST
pascal@23991 149 if (/pop/) isload=3
pascal@23991 150 if (/push/ || /call/ || /pop/) next
pascal@23989 151 }
pascal@22152 152 if (/i\+21\],513$/) isload=11
pascal@21984 153 if (isload == 12) { # LOAD.LST
pascal@21984 154 if (/cmp/) next
pascal@21984 155 if (/jb/) isload=0
pascal@21984 156 sub(/jb/,"jcxz")
pascal@21984 157 }
pascal@21984 158 if (isload == 11) { # LOAD.LST
pascal@21984 159 if (/cmp/) {
pascal@21984 160 print " mov cx,513"
pascal@22152 161 sub(/cmp /,"sub cx,")
pascal@22152 162 sub(/,513/,"")
pascal@21984 163 }
pascal@21984 164 if (/jb/) isload=12
pascal@21984 165 sub(/jb/,"ja")
pascal@21984 166 }
pascal@22170 167 sub(/_imgs\+65534/,"_imgs-2")
pascal@21791 168 if (/setup_sects == 0/) isload=9
pascal@21791 169 if (isload == 9) { # LOAD.LST
pascal@23999 170 sub(/,0/,",al ; worst case 2k boundary (iso)")
pascal@21791 171 if (/jne/) isload=0
pascal@21791 172 }
pascal@21757 173 if (/cmd_line_ptr =/ && is386 == 0) isload=7
pascal@21757 174 if (isload == 7) { # LOAD.LST
pascal@22181 175 if (/add/ || /xor/ || /extrn/ || /N_LXLSH@/ || /cl,4/ || /,ax/) next
pascal@22170 176 if (/enable A20 if needed/) { print nextinst; isload=0 }
pascal@22152 177 if (/i-463/) $0=" mov bx,-463"
pascal@22170 178 if (/i-465/) {
pascal@22170 179 sub(/465/,"2"); sub(/\[/,"[bx+")
pascal@22170 180 nextinst=$0; sub(/-2\],-23745/,"],8000h",nextinst)
pascal@22170 181 }
pascal@21757 182 if (/,dx/) {
pascal@21757 183 print " mov cl,12"
pascal@21757 184 print " shr ax,cl"
pascal@22181 185 print " mov bx,55"
pascal@21757 186 sub(/dx/,"ax")
pascal@21757 187 }
pascal@21757 188 }
pascal@23992 189 if (/pm_low == 0/) {
pascal@23991 190 print " push di"
pascal@23996 191 print " push si"
pascal@23991 192 isload=6
pascal@23991 193 }
pascal@21757 194 if (isload == 6) { # LOAD.LST
pascal@23991 195 if (/si\+2/) {
pascal@23991 196 print " cmpsw"
pascal@23991 197 next
pascal@23991 198 }
pascal@23989 199 if (/les/) sub(/bx,/,"di,")
pascal@23991 200 if (/bx\+4/ || /es:/ || /call/ || /pop/ || /ret/) next
pascal@23989 201 if (/si\+6/) {
pascal@23989 202 print " movsw"
pascal@23989 203 print " movsw"
pascal@23989 204 print " movsw"
pascal@23989 205 print " movsw"
pascal@23996 206 print " pop si"
pascal@23991 207 print "load_imagez:"
pascal@21757 208 next
pascal@21757 209 }
pascal@21757 210 }
pascal@21757 211 if (isload == 5) { # LOAD.LST
pascal@21757 212 sub(/ax,/,"bx,")
pascal@23996 213 if (/@puts\$qpxzc/) isload=0
pascal@21757 214 if (/mov bx,ax/) next
pascal@23996 215 sub(/,word ptr \[di\+29\]/,",cx")
pascal@21757 216 }
pascal@23996 217 if (/_cmdnum\+14/ && is386 == 0) isload=4
pascal@22180 218 if (isload == 4) { # LOAD.LST
pascal@23996 219 if (/_cmdnum\+14/) next
pascal@23996 220 if (/_cmdnum\+12$/) {
pascal@23996 221 $0=" les dx,dword ptr [bx+12]"
pascal@21757 222 }
pascal@21791 223 sub(/,ax/,",es")
pascal@22181 224 if (/add ax,word ptr/) $0=" add ax,cx"
pascal@22181 225 if (/i\+29\],0/) {
pascal@22181 226 sub(/,0$/,"")
pascal@22181 227 sub(/cmp /,"mov cx,")
pascal@22181 228 }
pascal@22181 229 sub(/je/,"jcxz")
pascal@23996 230 if (/@strcpy/) isload=0
pascal@23992 231 if (/\+0x200/) isload=5
pascal@21757 232 }
pascal@23996 233 if (/void load_initrd\(\)/) { isload=3; isload2=0 }
pascal@21754 234 if (isload == 3) { # LOAD.LST
pascal@24015 235 if (/bx,offset DGROUP:_imgs\+28/ || /push si/) next
pascal@24015 236 if (/si,offset DGROUP:_imgs\+28/) print " push si"
pascal@23996 237 if (/cmdstr\+4,0/) {
pascal@23996 238 isload2++
pascal@23996 239 print " mov ax,word ptr DGROUP:_cmdstr+4"
pascal@23996 240 $0=" or ax,ax"
pascal@23996 241 }
pascal@23996 242 if (isload2 && /DGROUP:_cmdstr\+4/) $0=";" $0
pascal@23994 243 if (/je short @2@.*/) sub(/@2@.*/,"load_initrd_ret")
pascal@23992 244 if (/mov ax,word ptr \[si\]/) $0=" lodsw"
pascal@23991 245 if( /jmp/) {
pascal@23991 246 print "load_initrd_ret:"
pascal@23991 247 print " ret"
pascal@23991 248 next
pascal@23991 249 }
pascal@23996 250 if (/@loadfailure/) {
pascal@23996 251 print " global jmploadfailure:near"
pascal@23996 252 print "jmploadfailure:"
pascal@23996 253 }
pascal@21754 254 sub(/\[di/,"[bx")
pascal@23992 255 sub(/di,/,"bx,")
pascal@21754 256 }
pascal@23996 257 if (/mode = vid_mode/) { isload=2; print " mov bx,offset _cmdnum" }
pascal@21750 258 if (isload == 2) { # LOAD.LST
pascal@23996 259 if (/DGROUP:_cmdnum/) { sub(/DGROUP:_cmdnum/,"[bx"); $0=$0 "]"}
pascal@21750 260 sub(/,0/,""); sub(/cmp /,"mov cx,")
pascal@21750 261 sub(/je/,"jcxz")
pascal@21750 262 if (/ax,word/) next
pascal@21750 263 sub(/,ax/,",cx")
pascal@23992 264 if (/starting linux 1\.3\.73/) isload=0
pascal@21750 265 }
pascal@23996 266 if (/_rm_size=0x200/ || /heap_top = _rm_buf/) isload=1
pascal@21750 267 if (isload == 1) { # LOAD.LST
pascal@21791 268 if (/ptr .die\$qpxzc/) $0="@die@:\n" $0
pascal@21729 269 if (/mov al,byte ptr/ && is386) {
pascal@22152 270 sub(/mov al/,"movzx eax")
pascal@21729 271 }
pascal@21791 272 if (is386 == 0) {
pascal@23999 273 if (/m->size -= _rm_size/) print " cwd ; do not trust rewind result (iso case)"
pascal@21791 274 sub(/,0$/,",dx")
pascal@21791 275 }
pascal@21729 276 if (/ax,word ptr/) next
pascal@21729 277 if (/^ call/) isload=0
pascal@21729 278 }
pascal@21791 279 } # file == "load.cpp"
pascal@21791 280 if (file == "iso9660.cpp") {
pascal@24034 281 if (swapsidi == 1) {
pascal@24034 282 if (/\[si/) sub(/\[si/,"[di")
pascal@24034 283 else (/\[di/) sub(/\[di/,"[si")
pascal@24034 284 if (/\+si/) sub(/\+si/,"+di")
pascal@24034 285 else (/\+di/) sub(/\+di/,"+si")
pascal@24034 286 if (/,si/) sub(/,si/,",di")
pascal@24034 287 else if (/,di/) sub(/,di/,",si")
pascal@24034 288 if (/si,/) sub(/si,/,"di,")
pascal@24034 289 else if (/di,/) sub(/di,/,"si,")
pascal@24034 290 }
pascal@24022 291 if (/di,offset DGROUP:_buf2k/) { si="si"; di="di" }
pascal@24022 292 if (/si,offset DGROUP:_buf2k/) { si="di"; di="si" }
pascal@24022 293 if (/leave/ || /enter/ || /bp/ || /sub sp,/) next
pascal@24022 294 if (/ptr \[.i\+8\],dx/) next
pascal@24022 295 if (/ptr \[.i\+6\],ax/) next
pascal@24022 296 if (/ptr \[.i\+6\],eax/) next
pascal@24020 297 if (/x,word ptr \[.i\+32\]/) next
pascal@24019 298 if (/add word ptr \[.i\],ax/) sub(/ax/,"cx")
pascal@24034 299 if (/ax,word ptr \[si\+18\]/) sub(/mov ax,/,"les ax,d")
pascal@24034 300 if (/ax,word ptr \[si\+20\]/) next
pascal@24034 301 if (/word ptr \[si\+25\],ax/) sub(/ax/,"es")
pascal@23996 302 sub(/di,word ptr DGROUP:_isostate\+2/,"di,word ptr [si+2]")
pascal@24034 303 if (/-257/) isiso=22
pascal@24034 304 if (isiso == 22) {
pascal@24034 305 sub(/-257/,"-257 ; clear C")
pascal@24034 306 if (/je/) {
pascal@24034 307 print " cbw"
pascal@24034 308 print " xchg ax,bx"
pascal@24034 309 print " xchg ax,dx ; .. or ."
pascal@24034 310 $0=" je returnC"
pascal@24034 311 }
pascal@24034 312 }
pascal@24022 313 if (/p = buf2k \+ 32 \+ x->curpos/) isiso=21
pascal@24020 314 if (isiso == 21) { # ISO9660.LST
pascal@24023 315 if (/ax,/) next
pascal@24034 316 if (/.i,ax/) sub(/mov/,"xchg")
pascal@24020 317 if (/# else/) isiso=0
pascal@24020 318 }
pascal@24034 319 if (/cx,.i/) {
pascal@24034 320 if (isiso == 0) {
pascal@24034 321 print " ifndef CLEAN_ISO9660"
pascal@24034 322 print " inc " di
pascal@24034 323 print " mov cx," di
pascal@24034 324 }
pascal@24022 325 isiso=20
pascal@24022 326 }
pascal@24019 327 if (isiso == 20) { # ISO9660.LST
pascal@24020 328 if (/bx,dx/) {
pascal@24020 329 isiso=12
pascal@24020 330 next
pascal@24020 331 }
pascal@24034 332 if (/add .i,ax/ || /cbw/) next
pascal@24034 333 if (/cmp/) sub(/\[/,"[bx+")
pascal@24022 334 if (/inc cx/) next
pascal@24034 335 if (/sub/) sub(/.i/,"bx")
pascal@24034 336 sub(/inc .i/,"inc bx")
pascal@24034 337 if (/al,byte ptr/) {
pascal@24034 338 next
pascal@24034 339 }
pascal@24034 340 sub(/i-1\],12603/,"i],12603")
pascal@24034 341 if (/bx\+.i\],46/) {
pascal@24034 342 print " inc " di
pascal@24034 343 print " mov cx," di
pascal@24034 344 }
pascal@24022 345 if (/i],0/) {
pascal@24034 346 print " ifndef CLEAN_ISO9660"
pascal@24034 347 print " inc " di
pascal@24034 348 print " mov cx," di
pascal@24034 349 print " endif"
pascal@24034 350 print "seteos:"
pascal@24034 351 sub(/,0/,",bh ; clear C")
pascal@24034 352 sub(/mov byte ptr \[/,"and byte ptr [bx+")
pascal@24022 353 }
pascal@24034 354 if (/cx,.i/) next
pascal@24034 355 if (/\}/) {
pascal@24034 356 print " xchg ax,cx"
pascal@24034 357 }
pascal@24034 358 if (/cx,5/) $0=" lea dx,[" di "+5]"
pascal@24019 359 if (/filename = s;/) {
pascal@24019 360 isiso=0
pascal@24019 361 }
pascal@24019 362 }
pascal@23996 363 if (isiso == 19) { # ISO9660.LST
pascal@24022 364 if (/short @2@310/) $0=" jc restoreC"
pascal@24022 365 if (/si\+32/ || /ax,dx/ || /ax,di/ || /cmp ax,-1/ || /sub ax,/) next
pascal@24034 366 if (/ax,word ptr \[si\+28\]/) next
pascal@24020 367 if (/bx,offset/) sub(/bx/,"ax")
pascal@24034 368 sub(/dx,/,"bx,")
pascal@23996 369 if (/short @2@282/) sub(/je/,"jnc")
pascal@24034 370 if (/\[si\+30\],0/) $0=" ;or cl,cl"
pascal@24034 371 if (/short @2@478/) sub(/je/,"jcxz")
pascal@23996 372 if (/@strcmp\$qpxzct1/) {
pascal@23996 373 print
pascal@23996 374 print "restoreC:"
pascal@24034 375 $0=" mov byte ptr [di],dl ; c"
pascal@23996 376 isiso=1
pascal@23996 377 }
pascal@23996 378 }
pascal@23996 379 if (isiso == 18) { # ISO9660.LST
pascal@24022 380 if (/endif/) isiso=1
pascal@23996 381 }
pascal@23996 382 if (isiso == 17) { # ISO9660.LST
pascal@24034 383 if (/si\+18/) {
pascal@24022 384 print "next:"
pascal@24034 385 print " mov word ptr [si+20],bx"
pascal@23996 386 print
pascal@24022 387 isiso=0
pascal@24022 388 }
pascal@24022 389 if (/_buf2k\+167/) {
pascal@24022 390 print
pascal@24022 391 $0=""
pascal@23996 392 }
pascal@23996 393 else sub(/ax/,"bx")
pascal@23996 394 if (/,bx/) next
pascal@23996 395 if (/isoreadrootsector/) {
pascal@23996 396 print
pascal@24022 397 print " mov ax,word ptr [_buf2k+1]"
pascal@24022 398 print " xor ax,17475 ; clear C, CD"
pascal@24022 399 print "jne_returnNotC:"
pascal@24022 400 print " cmc"
pascal@24022 401 $0=" jne returnC"
pascal@23996 402 }
pascal@23996 403 }
pascal@24022 404 if (/if \(c\)/) isiso=16
pascal@23996 405 if (isiso == 16) { # ISO9660.LST
pascal@24022 406 if (/cmp/) {
pascal@24022 407 print " mov bx,word ptr [si+7]"
pascal@24022 408 print " mov ax,word ptr [si+11]"
pascal@24034 409 print " dec dx"
pascal@24022 410 print " jns next"
pascal@23996 411 }
pascal@24022 412 if (/isolseek/) isiso=1
pascal@24022 413 else if (! /;/) next
pascal@23996 414 }
pascal@23996 415 if (/found:/) isiso=15
pascal@23996 416 if (isiso != 15 && /si,offset DGROUP:_isostate/) $0=";" $0
pascal@23996 417 if (isiso == 15) { # ISO9660.LST
pascal@23996 418 if (/xor/) {
pascal@24020 419 print "returnC:"
pascal@24034 420 print " sbb dx,dx"
pascal@23996 421 print "return:"
pascal@23996 422 next
pascal@23996 423 }
pascal@24034 424 if (/i\+28\],cx/) {
pascal@24034 425 print " ifndef BASIC_ISO9660"
pascal@24034 426 print " xchg ax,dx"
pascal@24034 427 print " endif"
pascal@24034 428 next
pascal@24034 429 }
pascal@24022 430 if (/@1@422:/) next
pascal@23996 431 if (/\[di\],47/) isiso=17
pascal@23996 432 }
pascal@23989 433 if (isiso == 14) { # ISO9660.LST
pascal@24022 434 if (/ax,/ || /jge/) next
pascal@24022 435 sub(/mov/,"sub")
pascal@24022 436 sub(/,ax/,",8")
pascal@24020 437 if (/jmp/) {
pascal@24022 438 print " ;JUMPS"
pascal@24022 439 print " jb returnCXZC"
pascal@24022 440 $0=" ;NOJUMPS"
pascal@24022 441 isiso=0
pascal@24020 442 }
pascal@23989 443 }
pascal@24022 444 if (/p = buf2k \+ 34/) isiso=13
pascal@23988 445 if (isiso == 13) { # ISO9660.LST
pascal@24034 446 #if (/cbw/) $0=" ;cbw"
pascal@24019 447 if (/i,.i/) $0=" xchg ax,bx"
pascal@24022 448 if (/i,ax/) $0=" xchg ax," di
pascal@24034 449 if (/i,70/ || /ptr \[.i\+32\]/) next
pascal@24022 450 if (/register len/) {
pascal@24022 451 isiso=12
pascal@24022 452 }
pascal@23988 453 }
pascal@23870 454 if (isiso == 12) { # ISO9660.LST
pascal@24019 455 if (/.i\+2/) sub(/al/,"bl")
pascal@23996 456 if (/cbw/) next
pascal@24034 457 if (/dx,ax/) next
pascal@23870 458 if (/bx,dx/) next
pascal@23870 459 sub(/i,dx/,"i,bx")
pascal@24020 460 sub(/cx,/,"dx,")
pascal@24034 461 if (/bx\+.i\],0/) {
pascal@24034 462 sub(/,0/,",bh")
pascal@24034 463 }
pascal@24034 464 if (/jmp/) {
pascal@24034 465 print
pascal@24034 466 $0=" endif"
pascal@24034 467 }
pascal@24034 468 if (/jne/) {
pascal@24034 469 print " ifdef BASIC_ISO9660"
pascal@24034 470 print " lea cx,[" di "+5]"
pascal@24034 471 print " je seteos"
pascal@24034 472 print " else"
pascal@24034 473 }
pascal@24020 474 if (/while/) isiso=120
pascal@24020 475 }
pascal@24020 476 if (isiso == 120) { # ISO9660.LST
pascal@24034 477 sub(/ax/,"cx")
pascal@24034 478 if (/cmp cx,/) $0=" cmp " di ",cx"
pascal@24022 479 sub(/jae/,"jb")
pascal@24020 480 if (/endif/) isiso=0
pascal@23870 481 }
pascal@23863 482 if (/curpos >= SECT/) isiso=10
pascal@23863 483 if (isiso == 10) { # ISO9660.LST
pascal@24022 484 if (/,2048/) {
pascal@24022 485 print " xor cx,cx"
pascal@23863 486 sub(/cmp /,"mov bx,")
pascal@23863 487 sub(/i.*/,"i]")
pascal@23863 488 print
pascal@23863 489 $0=" cmp bh,2048/256"
pascal@23863 490 }
pascal@24022 491 if (/DGROUP:_buf2k\[bx\],0/) $0=" cmp word ptr [bx+" di "],cx"
pascal@24022 492 sub(/,0/,",cx")
pascal@24022 493 if (/\[.i\],cx/) isiso=14
pascal@24022 494 else if (/mov/) next
pascal@23863 495 }
pascal@21791 496 if (/<< SECTORBITS/) isiso=9
pascal@21791 497 if (isiso == 9) { # ISO9660.LST
pascal@24022 498 if (/dx,/) next
pascal@21791 499 sub(/mov ax,/,"les ax,d")
pascal@21791 500 if (/^ call/) {
pascal@21791 501 print " extrn N_LXLSH@ES:near"
pascal@21791 502 sub(/N_LXLSH@/,"N_LXLSH@ES")
pascal@21791 503 isiso=0
pascal@21791 504 }
pascal@21791 505 }
pascal@21791 506 if (/filesize =/) isiso=8
pascal@21791 507 if (isiso == 8) { # ISO9660.LST
pascal@24034 508 if (/ax,/ || /cbw/) next
pascal@21791 509 sub(/mov dx,/,"les dx,d")
pascal@24020 510 sub(/\],ax/,"],es")
pascal@24020 511 sub(/cx,/,"dx,")
pascal@24034 512 if (/DGROUP:s@\+/) {
pascal@24034 513 print
pascal@24034 514 next
pascal@24034 515 }
pascal@24034 516 if (/i\+33]/) {
pascal@24034 517 print " ifdef ROCKRIDGE"
pascal@24034 518 print " ifdef BASIC_ISO9660"
pascal@24034 519 print " add " di ",32"
pascal@24034 520 print " mov ax,[" di "]"
pascal@24034 521 print " else"
pascal@24034 522 print " mov ax,[" di "+32]"
pascal@24034 523 print " endif"
pascal@24034 524 print " mov bl,ah"
pascal@24034 525 print " mov bh,0"
pascal@24034 526 print " else"
pascal@24034 527 print " mov al,[" di "+33]"
pascal@24034 528 print " cbw"
pascal@24034 529 $0=" endif"
pascal@24034 530 }
pascal@24034 531 if (/sub/) {
pascal@24034 532 print " ifdef ROCKRIDGE"
pascal@24034 533 print " sub dx,bx"
pascal@24034 534 print " else"
pascal@24034 535 print
pascal@24034 536 $0=" endif"
pascal@24034 537 isiso=0
pascal@24034 538 }
pascal@21791 539 }
pascal@21754 540 if (/entrysize =/) isiso=5
pascal@21754 541 if (isiso == 5) { # ISO9660.LST
pascal@21754 542 if (/ax,ax/) next
pascal@24022 543 if (/word ptr \[.i\+3.\],ax/) next
pascal@21754 544 sub(/ax/,"cx")
pascal@21754 545 sub(/je/,"jcxz")
pascal@23996 546 if (/jcxz/) {
pascal@23996 547 hold=0
pascal@23996 548 print s
pascal@24022 549 print " stc"
pascal@24022 550 print "returnCXZC:"
pascal@24022 551 sub(/@1@1../,"returnC")
pascal@23996 552 print
pascal@24022 553 if (is386) $0=" mov dword ptr [" si "+6],eax"
pascal@24019 554 else {
pascal@24022 555 print " mov word ptr [" si "+8],dx"
pascal@24022 556 $0=" mov word ptr [" si "+6],ax"
pascal@24019 557 }
pascal@23996 558 }
pascal@21754 559 if (/return/) isiso=0
pascal@21754 560 }
pascal@21754 561 if (/do s\+\+; while/) isiso=3
pascal@23996 562 if (isiso == 3) { # ISO9660.LST
pascal@24022 563 if (/do \{/) print "while1:"
pascal@21754 564 sub(/cmp byte ptr \[.i\]/,"sub al")
pascal@21754 565 if (/inc /) { r=$2; print; next }
pascal@21754 566 if (/al,0/) print " mov al,[" r "]"
pascal@24034 567 if (/word ptr \[si\],-1/) $0=" not word ptr [si] ; zero'd in BSS"
pascal@24034 568 sub(/al,32/,"ax,32")
pascal@24034 569 if (/byte ptr \[si\+30\],al/) $0=" xchg ax,cx"
pascal@24020 570 if (/al,byte ptr \[/) next
pascal@21754 571 if (/byte ptr \[.*\],0/) next
pascal@24022 572 if (/byte ptr \[si\+31\],al/) next
pascal@23996 573 }
pascal@24034 574 if (/ptr .isoreaddir/) {
pascal@24034 575 print " ifdef ISOHOOK"
pascal@24034 576 print " push cx"
pascal@24034 577 print
pascal@24034 578 print " pop cx"
pascal@24034 579 print " else"
pascal@24034 580 print
pascal@24034 581 $0=" endif"
pascal@24034 582 isiso=1
pascal@24034 583 }
pascal@23996 584 if (isiso == 1) { # ISO9660.LST
pascal@24034 585 if (/xor/) {
pascal@24034 586 $0=" xor cl,32"
pascal@24034 587 isiso=18
pascal@24034 588 }
pascal@23996 589 if (/n = name;/) {
pascal@23996 590 isiso=19
pascal@24034 591 print " xchg dl,byte ptr [di] ; c"
pascal@21791 592 }
pascal@24022 593 sub(/jne/,"jnc")
pascal@24022 594 if (/short @2@450/) $0=" jc returnC"
pascal@24022 595 if (/je/) $0=" jc while1"
pascal@24022 596 if (/short @2@562/) sub(/@2@562/,"jne_returnNotC")
pascal@24022 597 if (/jmp/) $0=" jmp jne_returnNotC"
pascal@23996 598 if (/ax,word ptr \[si\+4\]/) $0=" xchg ax,bx ; " $0
pascal@24022 599 if (/\[di\],al/ || /al,byte ptr/) next
pascal@24022 600 if (/@2@338/) next
pascal@23996 601 if (/ax,-1/) next
pascal@23996 602 if (/inc di/ || /@@0/) next
pascal@24022 603 if (/@2@142$/) print " inc di"
pascal@21735 604 }
pascal@24022 605 if (/i\+34\]/) next
pascal@24034 606 if (/di,offset DGROUP:_isostate/) {
pascal@24034 607 sub(/mov/,";mov")
pascal@24034 608 sub(/di,/,"si,")
pascal@24034 609 swapsidi=1
pascal@24034 610 }
pascal@24034 611 if (/^ ret/) swapsidi=0
pascal@21791 612 } # file == "iso9660.cpp"
pascal@21729 613 if (wascall) {
pascal@21729 614 if (rcall != "") {
pascal@21729 615 if (/,ax$/) print " mov " rcall ",ax"
pascal@21729 616 else print " xchg ax," rcall
pascal@21729 617 wascall=0
pascal@21729 618 }
pascal@21729 619 else if (/^ mov .i,ax$/) {
pascal@21729 620 split($2,y,",")
pascal@21729 621 rcall=y[1]
pascal@21729 622 next
pascal@21729 623 }
pascal@21729 624 else wascall=0
pascal@21729 625 }
pascal@21729 626 if (/^ call /) { wascall=1; rcall="" }
pascal@20458 627 if (hold == 0) {
pascal@20458 628 s=$0
pascal@20534 629 if (/^ mov .[ix],bx$/ || /^ mov .[ix],.i$/) {
pascal@20543 630 r=$2; kept=0
pascal@20458 631 hold=1; split($2,regs,","); next
pascal@20458 632 }
pascal@21729 633 if (/^ inc e?.[ixhl]/ || /^ dec e?.[ixhl]/) {
pascal@20458 634 hold=2; r=$2; next
pascal@20458 635 }
pascal@20458 636 if (/^ mov [abcds][ix],/ && ! /,.s/) {
pascal@20458 637 hold=3; split($2,regs,","); next
pascal@20458 638 }
pascal@20458 639 if (/^ movzx eax,ax$/) { hold=4; next }
pascal@20544 640 if (/^ cmp word ptr/ || /^ cmp [bcd]x,/) {
pascal@20543 641 split($0,regs,",")
pascal@20543 642 if (isnum(regs[2]) && regs[2] != 0 &&
pascal@20543 643 (regs[2] % 256) == 0) {
pascal@20549 644 hold=5; next
pascal@20543 645 }
pascal@20543 646 }
pascal@20630 647 if (/^ mov ax,cs$/) { hold=6; kept=0; next }
pascal@20630 648 if (/^ mov cl,4$/) { hold=7; next }
pascal@20630 649 if (/^ cmp word ptr DGROUP:.*,0$/) {
pascal@20630 650 hold=8; split($2,regs,","); next
pascal@20630 651 }
pascal@20634 652 if (/^ cbw/) { hold=11; kept=0; next }
pascal@20634 653 if (/^ add [abcds][ix],2$/) {
pascal@20634 654 split($2,regs,","); hold=12; next
pascal@20634 655 }
pascal@20634 656 if (/^ sub [abcds][ix],2$/) {
pascal@20634 657 split($2,regs,","); hold=13; next
pascal@20634 658 }
pascal@21569 659 if (/^ push dx$/) {
pascal@21569 660 hold=14; next;
pascal@21569 661 }
pascal@20458 662 }
pascal@20458 663 else if (hold == 1) {
pascal@20543 664 if (/^ ;/) { line[kept++]=$0; next }
pascal@20458 665 hold=0; split($2,args,","); op=""
pascal@20458 666 if ($1 == "add") op="+"
pascal@20458 667 if ($1 == "sub") op="-"
pascal@20751 668 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 669 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20543 670 if (op != "" && regs[1] == args[1]) {
pascal@20543 671 if (isnum(args[2])) {
pascal@20630 672 for (i = kept++; i > 0; i--) line[i] = line[i-1]
pascal@20630 673 line[0] = "\tlea\t" regs[1] ",[" regs[2] op args[2] "]"
pascal@22288 674 sub(/\+-/,"-",line[0])
pascal@20630 675 hold=10; next
pascal@20543 676 }
pascal@20543 677 line[kept++]=$0
pascal@20543 678 hold=1
pascal@20458 679 next
pascal@20458 680 }
pascal@20520 681 if (/^ pop [ds]i/ && regs[2] ~ /^[ds]i$/) {
pascal@20520 682 print " xchg " r
pascal@20520 683 }
pascal@20543 684 else print s
pascal@20543 685 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20458 686 }
pascal@20458 687 else if (hold == 2) {
pascal@21729 688 split($0,args,",")
pascal@21729 689 if (/^ mov / && r == args[2]) { print s; s=$0; next }
pascal@21729 690 split($2,args,",")
pascal@21729 691 hold=0; print s
pascal@20458 692 if ($1 == "or" && r == args[1] && r == args[2]) next # don't clear C ...
pascal@20458 693 }
pascal@20458 694 else if (hold == 3) {
pascal@20458 695 hold=0
pascal@21576 696 if (/^ call / && regs[2] == "ax") s=" xchg ax," regs[1]
pascal@20542 697 if (/^ add [abcds][ix],/) {
pascal@20458 698 split($2,regs2,",")
pascal@20458 699 if (regs[1] == regs2[1] && (regs2[2] == "offset" || isnum(regs2[2]))) {
pascal@20549 700 t=$0; sub(/mov/,$1,s); sub(/add/,"mov",t)
pascal@20458 701 print t; print s; next
pascal@20458 702 }
pascal@20458 703 }
pascal@20458 704 print s
pascal@20458 705 }
pascal@20458 706 else if (hold == 4) {
pascal@20458 707 hold=0
pascal@20458 708 if (/^ push eax$/) {
pascal@20458 709 print " push 0"; print " push ax"; next
pascal@20458 710 } else { print s }
pascal@20458 711 }
pascal@20543 712 else if (hold == 5) {
pascal@20543 713 hold=0
pascal@20543 714 if ($1 == "jae" || $1 == "jb") {
pascal@20544 715 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 716 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20543 717 s = s "/256"
pascal@20543 718 }
pascal@20543 719 print s
pascal@20543 720 }
pascal@20630 721 else if (hold == 6) {
pascal@20630 722 if (($1 == "and" || $1 == "add") && $2 ~ /^ax,/) {
pascal@20630 723 line[kept++]=$0
pascal@20630 724 next
pascal@20630 725 }
pascal@20630 726 p=$0
pascal@20630 727 if (/^ movzx eax,ax$/) {
pascal@20630 728 s=" mov eax,cs"; p=""
pascal@20630 729 }
pascal@20630 730 print s
pascal@20630 731 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20630 732 if (p != "") print p
pascal@20630 733 hold=0; next
pascal@20630 734 }
pascal@20630 735 else if (hold == 7) {
pascal@20458 736 hold=0
pascal@20520 737 if (/^ call near ptr N_LXURSH@$/) {
pascal@20520 738 print " extrn N_LXURSH@4:near"
pascal@20520 739 print " call near ptr N_LXURSH@4"
pascal@20520 740 next
pascal@20520 741 }
pascal@20528 742 if (/^ call near ptr N_LXLSH@$/) {
pascal@20528 743 print " extrn N_LXLSH@4:near"
pascal@20528 744 print " call near ptr N_LXLSH@4"
pascal@20528 745 next
pascal@20528 746 }
pascal@20520 747 print s
pascal@20458 748 }
pascal@20630 749 else if (hold == 8) {
pascal@20630 750 if ($1 == "je" || $1 == "jne") { p=$0; hold=9; next }
pascal@20630 751 hold=0
pascal@20630 752 print s
pascal@20630 753 }
pascal@20630 754 else if (hold == 9) {
pascal@20630 755 hold=0; split($2,args,",")
pascal@20630 756 if (/^ mov ax,/ && args[2] == regs[1]) {
pascal@20630 757 print; print " or ax,ax"; print p; next
pascal@20630 758 }
pascal@20630 759 print s; print p;
pascal@20630 760 }
pascal@20630 761 else if (hold == 10) {
pascal@20751 762 split($2,args,","); op=""
pascal@20751 763 if ($1 == "add") op="+"
pascal@20751 764 if ($1 == "sub") op="-"
pascal@20751 765 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 766 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20751 767 if (op != "" && isnum(args[2])) {
pascal@20751 768 split(line[0],reg,",")
pascal@20751 769 if (substr(reg[1],length(reg[1])-1,2) == args[1]) {
pascal@20751 770 line[0] = substr(line[0],1,length(line[0])-1) op args[2] "]"
pascal@20751 771 next
pascal@20751 772 }
pascal@20751 773 }
pascal@20630 774 hold=0
pascal@20630 775 if (/^ mov [sd]i,ax$/) {
pascal@20630 776 split($2,args,",")
pascal@20630 777 for (i = 0; i < kept; i++) {
pascal@20630 778 sub(/ax/,args[1],line[i]); print line[i]
pascal@20630 779 }
pascal@20630 780 next
pascal@20630 781 }
pascal@20630 782 for (i = 0; i < kept; i++) print line[i]
pascal@20630 783 }
pascal@20634 784 else if (hold == 11) {
pascal@20634 785 if (/^ inc ax$/ || /^ dec ax$/) {
pascal@20634 786 line[kept++]=$0; next
pascal@20634 787 }
pascal@20634 788 split($2,args,",")
pascal@20634 789 if (/^ mov cl,/) {
pascal@20634 790 split($2,args,",")
pascal@20634 791 if (args[2] >= 8) {
pascal@20634 792 line[kept++]=$0; next
pascal@20634 793 }
pascal@20634 794 }
pascal@20634 795 if (!/^ shl ax,/ || (args[2] != "cl" && args[2] < 8)) {
pascal@20634 796 print " cbw "
pascal@20634 797 }
pascal@20634 798 for (i = 0; i < kept; i++) print line[i]
pascal@20634 799 hold=kept=0
pascal@20634 800 }
pascal@20634 801 else if (hold == 12) {
pascal@20634 802 hold=0
pascal@20634 803 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 804 print " inc " regs[1]
pascal@20634 805 print " inc " regs[1]
pascal@20634 806 }
pascal@20634 807 else print " add " regs[1] ",2"
pascal@20634 808 }
pascal@20634 809 else if (hold == 13) {
pascal@20634 810 hold=0
pascal@20634 811 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 812 print " dec " regs[1]
pascal@20634 813 print " dec " regs[1]
pascal@20634 814 }
pascal@20634 815 else print " sub " regs[1] ",2"
pascal@20634 816 }
pascal@21569 817 else if (hold == 14) {
pascal@21569 818 if (/^ push ax$/) { hold++; next; }
pascal@21569 819 print " push dx";
pascal@21569 820 hold=0;
pascal@21569 821 }
pascal@21569 822 else if (hold == 15) {
pascal@21569 823 if (/^ pop eax$/) { hold++; next; }
pascal@21569 824 print " push dx";
pascal@21569 825 print " push ax";
pascal@21569 826 hold=0;
pascal@21569 827 }
pascal@21569 828 else if (hold == 16) {
pascal@21569 829 hold=0;
pascal@21569 830 if (/^ shr eax,16$/) { print " xchg ax,dx"; next; }
pascal@21569 831 print " push dx";
pascal@21569 832 print " push ax";
pascal@21569 833 print " pop eax";
pascal@21569 834 }
pascal@21569 835 else if (hold == 17) {
pascal@21569 836 hold=0;
pascal@21569 837 if (/^ cmp ax,-1$/) { print " inc ax"; next; }
pascal@21569 838 }
pascal@21576 839 if (/^ call near ptr @fileexist\$/ || # return boolean :
pascal@21576 840 /^ call near ptr @isoreaddir\$/ || # 0=true, -1=false
pascal@21628 841 /^ call near ptr @isoreset\$/ ||
pascal@21628 842 /^ call near ptr @isoopen\$/ ||
pascal@21628 843 /^ call near ptr @isoreadsector\$/ ||
pascal@21628 844 /^ call near ptr @strhead\$/ ||
pascal@23984 845 /^ call near ptr @strcmp\$/ ||
pascal@21576 846 /^ call near ptr @argstr\$/ ||
pascal@21576 847 /^ call near ptr @argnum\$/) { print; hold=17; next; }
pascal@20458 848 s=$0
pascal@20458 849 # These optimisation may break ZF or CF
pascal@20485 850 if (/^ sub sp,2$/) { print " push ax"; next }
pascal@20485 851 if (/^ sub sp,4$/) { print " push ax"; print " push ax"; next }
pascal@20485 852 if (/^ add sp,4$/) { print " pop cx"; print " pop cx"; next }
pascal@20458 853 if (/^ mov d*word ptr .*,0$/ || /^ mov dword ptr .*,large 0$/) {
pascal@20458 854 sub(/mov/,"and",s); print s; next # slower
pascal@20458 855 }
pascal@20458 856 if (/^ mov d*word ptr .*,-1$/ || /^ mov dword ptr .*,large -1$/) {
pascal@20458 857 sub(/mov/,"or",s); print s; next # slower
pascal@20458 858 }
pascal@20458 859 if (/^ or .*,0$/ || /^ and .*,-1$/) next
pascal@20458 860 if (/^ or [abcd]x,/) {
pascal@20458 861 split($2,args,",")
pascal@20458 862 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 863 print " or " substr(args[1],1,1) "l," args[2]; next
pascal@20458 864 }
pascal@20458 865 }
pascal@20458 866 if (/^ and [abcd]x,/) {
pascal@20458 867 split($2,args,",")
pascal@20459 868 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 869 print " and " substr(args[1],1,1) "l," args[2]; next
pascal@20458 870 }
pascal@20458 871 }
pascal@20458 872 if (/^ or e[abcd]x,/) {
pascal@20458 873 split($2,args,",")
pascal@20458 874 if (args[2] == "large") { args[2] = $3 }
pascal@20458 875 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 876 print " or " substr(args[1],2,1) "l," args[2]; next
pascal@20458 877 }
pascal@20458 878 }
pascal@20458 879 if (/^ and e[abcd]x,/) {
pascal@20458 880 split($2,args,",")
pascal@20458 881 if (args[2] == "large") { args[2] = $3 }
pascal@20459 882 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 883 print " and " substr(args[1],2,1) "l," args[2]; next
pascal@20458 884 }
pascal@20458 885 }
pascal@20458 886 if (/^ or e[abcds][ix],/) {
pascal@20458 887 split($2,args,",")
pascal@20458 888 if (args[2] == "large") { args[2] = $3 }
pascal@20458 889 if (isnum(args[2]) && args[2] >= 0 && args[2] < 65536) {
pascal@20458 890 print " or " substr(args[1],2) "," args[2]; next
pascal@20458 891 }
pascal@20458 892 }
pascal@20458 893 if (/^ and e[abcds][ix],/) {
pascal@20458 894 split($2,args,",")
pascal@20458 895 if (args[2] == "large") { args[2] = $3 }
pascal@20459 896 if (isnum(args[2]) && args[2] >= -65536 && args[2] < 0) {
pascal@20458 897 print " and " substr(args[1],2) "," args[2]; next
pascal@20458 898 }
pascal@20458 899 }
pascal@20543 900 if (/^ add word ptr/ || /^ sub word ptr/ ||
pascal@20544 901 /^ add [bcd]x,/ || /^ sub [bcd]x,/) {
pascal@20542 902 split($0,args,",")
pascal@20542 903 if (isnum(args[2]) && (args[2] % 256 == 0)) {
pascal@20544 904 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 905 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20542 906 print s "/256"; next
pascal@20542 907 }
pascal@20542 908 }
pascal@20546 909 if (/^ add dword ptr/ || /^ sub dword ptr/) {
pascal@20458 910 split($0,args,",")
pascal@20543 911 if (args[2] == "large") { args[2] = $3 }
pascal@20458 912 if (isnum(args[2])) {
pascal@20546 913 if (args[2] % 16777216 == 0) {
pascal@20546 914 sub(/dword/,"byte",s)
pascal@20543 915 sub(/\],/,"+3],",s) || sub(/,/,"+3,",s)
pascal@20458 916 print s "/16777216"; next
pascal@20458 917 }
pascal@20458 918 if (args[2] % 65536 == 0) {
pascal@20546 919 sub(/dword/,"word",s)
pascal@20543 920 sub(/\],/,"+2],",s) || sub(/,/,"+2,",s)
pascal@20458 921 print s "/65536"; next
pascal@20458 922 }
pascal@20458 923 }
pascal@20458 924 }
pascal@20458 925 if (/^ mov e.x,/) {
pascal@20458 926 split($2,args,",")
pascal@20458 927 r=args[1]
pascal@20458 928 if (args[2] == "large") { args[2] = $3 }
pascal@20458 929 if (isnum(args[2]) && args[2] % 65536 == args[2]) {
pascal@20458 930 if (args[2] % 256 == args[2] || args[2] % 256 == 0) {
pascal@20458 931 print " xor " r "," r
pascal@20458 932 if (args[2] == 0) next
pascal@20458 933 x=" mov " substr(r,2,1)
pascal@20458 934 if (args[2] % 256 == 0) {
pascal@20458 935 print x "h," args[2] "/256"
pascal@20458 936 }
pascal@20458 937 else { print x "l," args[2] }
pascal@20458 938 next
pascal@20458 939 }
pascal@20458 940 }
pascal@20458 941 }
pascal@21576 942 if (afterjmp) print ";" $0
pascal@21576 943 else print
pascal@24022 944 if (/^ jmp / || /boot_kernel\(\);/ ||
pascal@23992 945 /^ call near ptr @die\$qpxzc/ ||
pascal@23992 946 /^ call near ptr @exit\$qv/) afterjmp=1
pascal@20458 947 }