wok annotate linld/stuff/src/pipehole.awk @ rev 24334

polkit: CVE-2021-4034
author Pascal Bellard <pascal.bellard@slitaz.org>
date Fri Jan 28 11:07:11 2022 +0000 (2022-01-28)
parents 6b6d14c9f7e9
children c11594098e34
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@24067 25 if (/short @1@422/ && gotexit) $0=" ja call_exit"
pascal@21984 26 if (islinld==1) {
pascal@24013 27 if (/,word.*/) islinld=0
pascal@21984 28 print "; " $0
pascal@24013 29 next
pascal@21984 30 }
pascal@21984 31 if (/^_main proc/) islinld=1
pascal@21984 32 if (/image\|initrd/) islinld=3
pascal@24013 33 if (islinld==3 && /bx,word ptr/) { print "; " $0; next }
pascal@21984 34 if (/fileexist\$qpxzc/) islinld=4
pascal@21984 35 if (islinld==4) {
pascal@24022 36 if (/DGROUP:_heap_top/) next
pascal@23993 37 if (/ax,-1/) {
pascal@23993 38 print " inc ax"
pascal@24013 39 print " mov ax,word ptr [di]"
pascal@23993 40 next
pascal@23993 41 }
pascal@24067 42 if (/ax,word ptr \[/) next
pascal@21984 43 }
pascal@23992 44 if (/buf_cmdline\+1/) {
pascal@23992 45 islinld=5
pascal@23996 46 print " mov bx,offset DGROUP:_buf_cmdline+1"
pascal@23996 47 sub(/offset DGROUP:_buf_cmdline\+1/,"bx")
pascal@23992 48 }
pascal@23804 49 if (islinld==5) {
pascal@23996 50 if (/bx,offset DGROUP:_buf_cmdline/) $0=" dec bx"
pascal@23993 51 if (/ax,word ptr/) next
pascal@23992 52 if (/call/) islinld=0
pascal@23804 53 }
pascal@23996 54 if (/bx,word ptr DGROUP:_cmdstr\+6/) next
pascal@23996 55 if (/_cmdstr\+6,0/) {
pascal@24013 56 print " mov bx,word ptr [si+6]"
pascal@23996 57 $0=" or bx,bx"
pascal@23996 58 }
pascal@24022 59 if (/heap_top \+1;/) islinld=6
pascal@24022 60 if (islinld==6) {
pascal@24022 61 sub(/ax/,"bx")
pascal@24022 62 if (/strcatb/) {
pascal@24022 63 print " dec bx"
pascal@24022 64 islinld=4
pascal@24022 65 }
pascal@24022 66 }
pascal@21984 67 } # file == "linld.cpp"
pascal@21791 68 if (file == "himem.cpp") {
pascal@24019 69 if (/sp,bp/ || /pop bp/ || /enter/ || /leave/) next
pascal@21984 70 if (/void load_image/) ishimem=1
pascal@21791 71 if (ishimem == 1 && is386 == 0) {
pascal@21791 72 if (/si\+8\]$/ || /si\+4\]$/ || /si\+16\]$/) next
pascal@21791 73 if (/si\+6\]$/ || /si\+2\]$/ || /si\+14\]$/) sub(/mov dx,/,"les dx,d")
pascal@24013 74 if (/si\+12\],ax/ || /si\+16\],ax/ || /di\+2\],ax/ || /DGROUP:_himem_buf\+2,ax/) sub(/,ax/,",es")
pascal@23996 75 if (/dx,dword ptr \[si\+14\]/ || /DGROUP:_himem_buf,dx/) sub(/dx/,"ax")
pascal@21984 76 }
pascal@21984 77 if (ishimem == 1) {
pascal@21984 78 if (/do \{/) ishimem=2
pascal@24034 79 if (/bx,si/ || /di,ax/ || /push bp/ || /bp,sp/ || /push di/ || /push si/) next
pascal@23996 80 if (/sp,2/ || /bp\+4/) next
pascal@21984 81 }
pascal@21984 82 if (ishimem == 2) {
pascal@21984 83 if (/movzx/) print " cwde"
pascal@23996 84 if (/bp-2/ || /di,ax/ || /bx,di/ || /bx,si/) next
pascal@21984 85 if (/storepage.bufv/) {
pascal@21984 86 print " inc ax"
pascal@21984 87 print " push ax"
pascal@21984 88 }
pascal@21984 89 if (/buf \+= size;/) {
pascal@21984 90 print " pop ax"
pascal@21984 91 }
pascal@23996 92 if (/i\+12/) ishimem=20
pascal@23996 93 }
pascal@23996 94 if (ishimem == 20) {
pascal@24013 95 if (/loadfail/) next
pascal@23996 96 if (/je/) {
pascal@23996 97 print " extrn jmploadfailure"
pascal@23996 98 $0=" jne short jmploadfailure"
pascal@23996 99 }
pascal@23989 100 if (/endp/) ishimem=0
pascal@21791 101 }
pascal@23992 102 if (/@memcpy_image\$qp11image_himem/) next
pascal@24013 103 if (/far last_ditch/) ishimem=3
pascal@23992 104 if (ishimem == 3) {
pascal@23996 105 sub(/DGROUP:_imgs\+4,/,"[si+4],")
pascal@24013 106 if (/bx,di/ || /di,ax/) next
pascal@23992 107 }
pascal@21791 108 } # file == "himem.cpp"
pascal@21791 109 if (file == "load.cpp") {
pascal@23996 110 if (isload != 3 && isload != 6) { # LOAD.LST
pascal@23996 111 if (/,si/ || /si,/ || /\[si/) sub(/si/,"di")
pascal@23996 112 else if (/,di/ || /di,/ || /\[di/) sub(/di/,"si")
pascal@23996 113 }
pascal@23996 114 if (/moverm\(/) isload=16
pascal@23996 115 if (isload != 16 && /bx,si/) next
pascal@23996 116 if (/@moverm/) isload=0
pascal@23992 117 if (/readrm\(m, 0x200/) isload=15
pascal@23992 118 if (isload == 15) { # LOAD.LST
pascal@23996 119 if (/bx,si/) next
pascal@23992 120 if (/call/) isload=0
pascal@23992 121 }
pascal@23989 122 if (/load_image\(/) {
pascal@23989 123 if (isload == 3) isload=13
pascal@23989 124 else isload=14
pascal@23989 125 }
pascal@23989 126 if (isload == 14) { # LOAD.LST
pascal@23996 127 if (/call/) $0=" jmp short load_imagez"
pascal@23989 128 if (/ret/) isload=0
pascal@23989 129 if (/pop/ || /ret/ || /push/) next
pascal@23989 130 }
pascal@23989 131 if (isload == 13) { # LOAD.LST
pascal@23991 132 if (/pop/) isload=3
pascal@23991 133 if (/push/ || /call/ || /pop/) next
pascal@23989 134 }
pascal@22152 135 if (/i\+21\],513$/) isload=11
pascal@21984 136 if (isload == 12) { # LOAD.LST
pascal@21984 137 if (/cmp/) next
pascal@21984 138 if (/jb/) isload=0
pascal@21984 139 sub(/jb/,"jcxz")
pascal@21984 140 }
pascal@21984 141 if (isload == 11) { # LOAD.LST
pascal@21984 142 if (/cmp/) {
pascal@21984 143 print " mov cx,513"
pascal@22152 144 sub(/cmp /,"sub cx,")
pascal@22152 145 sub(/,513/,"")
pascal@21984 146 }
pascal@21984 147 if (/jb/) isload=12
pascal@21984 148 sub(/jb/,"ja")
pascal@21984 149 }
pascal@22170 150 sub(/_imgs\+65534/,"_imgs-2")
pascal@21791 151 if (/setup_sects == 0/) isload=9
pascal@21791 152 if (isload == 9) { # LOAD.LST
pascal@23999 153 sub(/,0/,",al ; worst case 2k boundary (iso)")
pascal@21791 154 if (/jne/) isload=0
pascal@21791 155 }
pascal@21757 156 if (/cmd_line_ptr =/ && is386 == 0) isload=7
pascal@21757 157 if (isload == 7) { # LOAD.LST
pascal@22181 158 if (/add/ || /xor/ || /extrn/ || /N_LXLSH@/ || /cl,4/ || /,ax/) next
pascal@22170 159 if (/enable A20 if needed/) { print nextinst; isload=0 }
pascal@22152 160 if (/i-463/) $0=" mov bx,-463"
pascal@22170 161 if (/i-465/) {
pascal@22170 162 sub(/465/,"2"); sub(/\[/,"[bx+")
pascal@22170 163 nextinst=$0; sub(/-2\],-23745/,"],8000h",nextinst)
pascal@22170 164 }
pascal@21757 165 if (/,dx/) {
pascal@21757 166 print " mov cl,12"
pascal@21757 167 print " shr ax,cl"
pascal@22181 168 print " mov bx,55"
pascal@21757 169 sub(/dx/,"ax")
pascal@21757 170 }
pascal@21757 171 }
pascal@23992 172 if (/pm_low == 0/) {
pascal@23991 173 print " push di"
pascal@23996 174 print " push si"
pascal@23991 175 isload=6
pascal@23991 176 }
pascal@21757 177 if (isload == 6) { # LOAD.LST
pascal@23991 178 if (/si\+2/) {
pascal@23991 179 print " cmpsw"
pascal@23991 180 next
pascal@23991 181 }
pascal@23989 182 if (/les/) sub(/bx,/,"di,")
pascal@23991 183 if (/bx\+4/ || /es:/ || /call/ || /pop/ || /ret/) next
pascal@23989 184 if (/si\+6/) {
pascal@23989 185 print " movsw"
pascal@23989 186 print " movsw"
pascal@23989 187 print " movsw"
pascal@23989 188 print " movsw"
pascal@23996 189 print " pop si"
pascal@23991 190 print "load_imagez:"
pascal@21757 191 next
pascal@21757 192 }
pascal@21757 193 }
pascal@21757 194 if (isload == 5) { # LOAD.LST
pascal@21757 195 sub(/ax,/,"bx,")
pascal@23996 196 if (/@puts\$qpxzc/) isload=0
pascal@21757 197 if (/mov bx,ax/) next
pascal@23996 198 sub(/,word ptr \[di\+29\]/,",cx")
pascal@21757 199 }
pascal@23996 200 if (/_cmdnum\+14/ && is386 == 0) isload=4
pascal@22180 201 if (isload == 4) { # LOAD.LST
pascal@23996 202 if (/_cmdnum\+14/) next
pascal@23996 203 if (/_cmdnum\+12$/) {
pascal@23996 204 $0=" les dx,dword ptr [bx+12]"
pascal@21757 205 }
pascal@21791 206 sub(/,ax/,",es")
pascal@22181 207 if (/add ax,word ptr/) $0=" add ax,cx"
pascal@22181 208 if (/i\+29\],0/) {
pascal@22181 209 sub(/,0$/,"")
pascal@22181 210 sub(/cmp /,"mov cx,")
pascal@22181 211 }
pascal@22181 212 sub(/je/,"jcxz")
pascal@23996 213 if (/@strcpy/) isload=0
pascal@23992 214 if (/\+0x200/) isload=5
pascal@21757 215 }
pascal@23996 216 if (/void load_initrd\(\)/) { isload=3; isload2=0 }
pascal@21754 217 if (isload == 3) { # LOAD.LST
pascal@24015 218 if (/bx,offset DGROUP:_imgs\+28/ || /push si/) next
pascal@24015 219 if (/si,offset DGROUP:_imgs\+28/) print " push si"
pascal@23996 220 if (/cmdstr\+4,0/) {
pascal@23996 221 isload2++
pascal@23996 222 print " mov ax,word ptr DGROUP:_cmdstr+4"
pascal@23996 223 $0=" or ax,ax"
pascal@23996 224 }
pascal@23996 225 if (isload2 && /DGROUP:_cmdstr\+4/) $0=";" $0
pascal@23994 226 if (/je short @2@.*/) sub(/@2@.*/,"load_initrd_ret")
pascal@23992 227 if (/mov ax,word ptr \[si\]/) $0=" lodsw"
pascal@23991 228 if( /jmp/) {
pascal@23991 229 print "load_initrd_ret:"
pascal@23991 230 print " ret"
pascal@23991 231 next
pascal@23991 232 }
pascal@23996 233 if (/@loadfailure/) {
pascal@23996 234 print " global jmploadfailure:near"
pascal@23996 235 print "jmploadfailure:"
pascal@23996 236 }
pascal@21754 237 sub(/\[di/,"[bx")
pascal@23992 238 sub(/di,/,"bx,")
pascal@21754 239 }
pascal@23996 240 if (/mode = vid_mode/) { isload=2; print " mov bx,offset _cmdnum" }
pascal@21750 241 if (isload == 2) { # LOAD.LST
pascal@23996 242 if (/DGROUP:_cmdnum/) { sub(/DGROUP:_cmdnum/,"[bx"); $0=$0 "]"}
pascal@21750 243 sub(/,0/,""); sub(/cmp /,"mov cx,")
pascal@21750 244 sub(/je/,"jcxz")
pascal@21750 245 if (/ax,word/) next
pascal@21750 246 sub(/,ax/,",cx")
pascal@23992 247 if (/starting linux 1\.3\.73/) isload=0
pascal@21750 248 }
pascal@23996 249 if (/_rm_size=0x200/ || /heap_top = _rm_buf/) isload=1
pascal@21750 250 if (isload == 1) { # LOAD.LST
pascal@21791 251 if (/ptr .die\$qpxzc/) $0="@die@:\n" $0
pascal@21729 252 if (/mov al,byte ptr/ && is386) {
pascal@22152 253 sub(/mov al/,"movzx eax")
pascal@21729 254 }
pascal@21791 255 if (is386 == 0) {
pascal@23999 256 if (/m->size -= _rm_size/) print " cwd ; do not trust rewind result (iso case)"
pascal@21791 257 sub(/,0$/,",dx")
pascal@21791 258 }
pascal@21729 259 if (/ax,word ptr/) next
pascal@21729 260 if (/^ call/) isload=0
pascal@21729 261 }
pascal@21791 262 } # file == "load.cpp"
pascal@21791 263 if (file == "iso9660.cpp") {
pascal@24034 264 if (swapsidi == 1) {
pascal@24034 265 if (/\[si/) sub(/\[si/,"[di")
pascal@24034 266 else (/\[di/) sub(/\[di/,"[si")
pascal@24034 267 if (/\+si/) sub(/\+si/,"+di")
pascal@24034 268 else (/\+di/) sub(/\+di/,"+si")
pascal@24034 269 if (/,si/) sub(/,si/,",di")
pascal@24034 270 else if (/,di/) sub(/,di/,",si")
pascal@24034 271 if (/si,/) sub(/si,/,"di,")
pascal@24034 272 else if (/di,/) sub(/di,/,"si,")
pascal@24034 273 }
pascal@24022 274 if (/di,offset DGROUP:_buf2k/) { si="si"; di="di" }
pascal@24022 275 if (/si,offset DGROUP:_buf2k/) { si="di"; di="si" }
pascal@24022 276 if (/leave/ || /enter/ || /bp/ || /sub sp,/) next
pascal@24022 277 if (/ptr \[.i\+8\],dx/) next
pascal@24022 278 if (/ptr \[.i\+6\],ax/) next
pascal@24022 279 if (/ptr \[.i\+6\],eax/) next
pascal@24020 280 if (/x,word ptr \[.i\+32\]/) next
pascal@24019 281 if (/add word ptr \[.i\],ax/) sub(/ax/,"cx")
pascal@24034 282 if (/ax,word ptr \[si\+18\]/) sub(/mov ax,/,"les ax,d")
pascal@24034 283 if (/ax,word ptr \[si\+20\]/) next
pascal@24034 284 if (/word ptr \[si\+25\],ax/) sub(/ax/,"es")
pascal@23996 285 sub(/di,word ptr DGROUP:_isostate\+2/,"di,word ptr [si+2]")
pascal@24034 286 if (/-257/) isiso=22
pascal@24034 287 if (isiso == 22) {
pascal@24034 288 sub(/-257/,"-257 ; clear C")
pascal@24034 289 if (/je/) {
pascal@24034 290 print " cbw"
pascal@24034 291 print " xchg ax,bx"
pascal@24034 292 print " xchg ax,dx ; .. or ."
pascal@24034 293 $0=" je returnC"
pascal@24034 294 }
pascal@24034 295 }
pascal@24022 296 if (/p = buf2k \+ 32 \+ x->curpos/) isiso=21
pascal@24020 297 if (isiso == 21) { # ISO9660.LST
pascal@24023 298 if (/ax,/) next
pascal@24034 299 if (/.i,ax/) sub(/mov/,"xchg")
pascal@24020 300 if (/# else/) isiso=0
pascal@24020 301 }
pascal@24034 302 if (/cx,.i/) {
pascal@24034 303 if (isiso == 0) {
pascal@24034 304 print " ifndef CLEAN_ISO9660"
pascal@24034 305 print " inc " di
pascal@24034 306 print " mov cx," di
pascal@24034 307 }
pascal@24022 308 isiso=20
pascal@24022 309 }
pascal@24019 310 if (isiso == 20) { # ISO9660.LST
pascal@24020 311 if (/bx,dx/) {
pascal@24020 312 isiso=12
pascal@24020 313 next
pascal@24020 314 }
pascal@24034 315 if (/add .i,ax/ || /cbw/) next
pascal@24034 316 if (/cmp/) sub(/\[/,"[bx+")
pascal@24022 317 if (/inc cx/) next
pascal@24034 318 if (/sub/) sub(/.i/,"bx")
pascal@24034 319 sub(/inc .i/,"inc bx")
pascal@24034 320 if (/al,byte ptr/) {
pascal@24034 321 next
pascal@24034 322 }
pascal@24034 323 sub(/i-1\],12603/,"i],12603")
pascal@24034 324 if (/bx\+.i\],46/) {
pascal@24034 325 print " inc " di
pascal@24034 326 print " mov cx," di
pascal@24034 327 }
pascal@24022 328 if (/i],0/) {
pascal@24034 329 print " ifndef CLEAN_ISO9660"
pascal@24034 330 print " inc " di
pascal@24034 331 print " mov cx," di
pascal@24034 332 print " endif"
pascal@24034 333 print "seteos:"
pascal@24034 334 sub(/,0/,",bh ; clear C")
pascal@24034 335 sub(/mov byte ptr \[/,"and byte ptr [bx+")
pascal@24022 336 }
pascal@24034 337 if (/cx,.i/) next
pascal@24034 338 if (/\}/) {
pascal@24034 339 print " xchg ax,cx"
pascal@24034 340 }
pascal@24034 341 if (/cx,5/) $0=" lea dx,[" di "+5]"
pascal@24019 342 if (/filename = s;/) {
pascal@24019 343 isiso=0
pascal@24019 344 }
pascal@24019 345 }
pascal@23996 346 if (isiso == 19) { # ISO9660.LST
pascal@24022 347 if (/short @2@310/) $0=" jc restoreC"
pascal@24022 348 if (/si\+32/ || /ax,dx/ || /ax,di/ || /cmp ax,-1/ || /sub ax,/) next
pascal@24034 349 if (/ax,word ptr \[si\+28\]/) next
pascal@24020 350 if (/bx,offset/) sub(/bx/,"ax")
pascal@24034 351 sub(/dx,/,"bx,")
pascal@23996 352 if (/short @2@282/) sub(/je/,"jnc")
pascal@24034 353 if (/\[si\+30\],0/) $0=" ;or cl,cl"
pascal@24034 354 if (/short @2@478/) sub(/je/,"jcxz")
pascal@23996 355 if (/@strcmp\$qpxzct1/) {
pascal@23996 356 print
pascal@23996 357 print "restoreC:"
pascal@24034 358 $0=" mov byte ptr [di],dl ; c"
pascal@23996 359 isiso=1
pascal@23996 360 }
pascal@23996 361 }
pascal@23996 362 if (isiso == 18) { # ISO9660.LST
pascal@24022 363 if (/endif/) isiso=1
pascal@23996 364 }
pascal@23996 365 if (isiso == 17) { # ISO9660.LST
pascal@24034 366 if (/si\+18/) {
pascal@24022 367 print "next:"
pascal@24034 368 print " mov word ptr [si+20],bx"
pascal@23996 369 print
pascal@24022 370 isiso=0
pascal@24022 371 }
pascal@24022 372 if (/_buf2k\+167/) {
pascal@24022 373 print
pascal@24022 374 $0=""
pascal@23996 375 }
pascal@23996 376 else sub(/ax/,"bx")
pascal@23996 377 if (/,bx/) next
pascal@23996 378 if (/isoreadrootsector/) {
pascal@23996 379 print
pascal@24022 380 print " mov ax,word ptr [_buf2k+1]"
pascal@24022 381 print " xor ax,17475 ; clear C, CD"
pascal@24022 382 print "jne_returnNotC:"
pascal@24022 383 print " cmc"
pascal@24022 384 $0=" jne returnC"
pascal@23996 385 }
pascal@23996 386 }
pascal@24022 387 if (/if \(c\)/) isiso=16
pascal@23996 388 if (isiso == 16) { # ISO9660.LST
pascal@24022 389 if (/cmp/) {
pascal@24022 390 print " mov bx,word ptr [si+7]"
pascal@24022 391 print " mov ax,word ptr [si+11]"
pascal@24034 392 print " dec dx"
pascal@24022 393 print " jns next"
pascal@23996 394 }
pascal@24022 395 if (/isolseek/) isiso=1
pascal@24022 396 else if (! /;/) next
pascal@23996 397 }
pascal@23996 398 if (/found:/) isiso=15
pascal@23996 399 if (isiso != 15 && /si,offset DGROUP:_isostate/) $0=";" $0
pascal@23996 400 if (isiso == 15) { # ISO9660.LST
pascal@23996 401 if (/xor/) {
pascal@24020 402 print "returnC:"
pascal@24034 403 print " sbb dx,dx"
pascal@23996 404 print "return:"
pascal@23996 405 next
pascal@23996 406 }
pascal@24034 407 if (/i\+28\],cx/) {
pascal@24034 408 print " ifndef BASIC_ISO9660"
pascal@24034 409 print " xchg ax,dx"
pascal@24034 410 print " endif"
pascal@24034 411 next
pascal@24034 412 }
pascal@24022 413 if (/@1@422:/) next
pascal@23996 414 if (/\[di\],47/) isiso=17
pascal@23996 415 }
pascal@23989 416 if (isiso == 14) { # ISO9660.LST
pascal@24022 417 if (/ax,/ || /jge/) next
pascal@24022 418 sub(/mov/,"sub")
pascal@24022 419 sub(/,ax/,",8")
pascal@24020 420 if (/jmp/) {
pascal@24022 421 print " ;JUMPS"
pascal@24022 422 print " jb returnCXZC"
pascal@24022 423 $0=" ;NOJUMPS"
pascal@24022 424 isiso=0
pascal@24020 425 }
pascal@23989 426 }
pascal@24022 427 if (/p = buf2k \+ 34/) isiso=13
pascal@23988 428 if (isiso == 13) { # ISO9660.LST
pascal@24034 429 #if (/cbw/) $0=" ;cbw"
pascal@24019 430 if (/i,.i/) $0=" xchg ax,bx"
pascal@24022 431 if (/i,ax/) $0=" xchg ax," di
pascal@24034 432 if (/i,70/ || /ptr \[.i\+32\]/) next
pascal@24022 433 if (/register len/) {
pascal@24022 434 isiso=12
pascal@24022 435 }
pascal@23988 436 }
pascal@23870 437 if (isiso == 12) { # ISO9660.LST
pascal@24019 438 if (/.i\+2/) sub(/al/,"bl")
pascal@23996 439 if (/cbw/) next
pascal@24034 440 if (/dx,ax/) next
pascal@23870 441 if (/bx,dx/) next
pascal@23870 442 sub(/i,dx/,"i,bx")
pascal@24020 443 sub(/cx,/,"dx,")
pascal@24034 444 if (/bx\+.i\],0/) {
pascal@24034 445 sub(/,0/,",bh")
pascal@24034 446 }
pascal@24034 447 if (/jmp/) {
pascal@24034 448 print
pascal@24034 449 $0=" endif"
pascal@24034 450 }
pascal@24034 451 if (/jne/) {
pascal@24034 452 print " ifdef BASIC_ISO9660"
pascal@24034 453 print " lea cx,[" di "+5]"
pascal@24034 454 print " je seteos"
pascal@24034 455 print " else"
pascal@24034 456 }
pascal@24020 457 if (/while/) isiso=120
pascal@24020 458 }
pascal@24020 459 if (isiso == 120) { # ISO9660.LST
pascal@24034 460 sub(/ax/,"cx")
pascal@24034 461 if (/cmp cx,/) $0=" cmp " di ",cx"
pascal@24022 462 sub(/jae/,"jb")
pascal@24020 463 if (/endif/) isiso=0
pascal@23870 464 }
pascal@23863 465 if (/curpos >= SECT/) isiso=10
pascal@23863 466 if (isiso == 10) { # ISO9660.LST
pascal@24022 467 if (/,2048/) {
pascal@24022 468 print " xor cx,cx"
pascal@23863 469 sub(/cmp /,"mov bx,")
pascal@23863 470 sub(/i.*/,"i]")
pascal@23863 471 print
pascal@23863 472 $0=" cmp bh,2048/256"
pascal@23863 473 }
pascal@24022 474 if (/DGROUP:_buf2k\[bx\],0/) $0=" cmp word ptr [bx+" di "],cx"
pascal@24022 475 sub(/,0/,",cx")
pascal@24022 476 if (/\[.i\],cx/) isiso=14
pascal@24022 477 else if (/mov/) next
pascal@23863 478 }
pascal@21791 479 if (/<< SECTORBITS/) isiso=9
pascal@21791 480 if (isiso == 9) { # ISO9660.LST
pascal@24022 481 if (/dx,/) next
pascal@21791 482 sub(/mov ax,/,"les ax,d")
pascal@21791 483 if (/^ call/) {
pascal@21791 484 print " extrn N_LXLSH@ES:near"
pascal@21791 485 sub(/N_LXLSH@/,"N_LXLSH@ES")
pascal@21791 486 isiso=0
pascal@21791 487 }
pascal@21791 488 }
pascal@21791 489 if (/filesize =/) isiso=8
pascal@21791 490 if (isiso == 8) { # ISO9660.LST
pascal@24034 491 if (/ax,/ || /cbw/) next
pascal@21791 492 sub(/mov dx,/,"les dx,d")
pascal@24020 493 sub(/\],ax/,"],es")
pascal@24020 494 sub(/cx,/,"dx,")
pascal@24034 495 if (/DGROUP:s@\+/) {
pascal@24034 496 print
pascal@24034 497 next
pascal@24034 498 }
pascal@24034 499 if (/i\+33]/) {
pascal@24034 500 print " ifdef ROCKRIDGE"
pascal@24034 501 print " ifdef BASIC_ISO9660"
pascal@24034 502 print " add " di ",32"
pascal@24034 503 print " mov ax,[" di "]"
pascal@24034 504 print " else"
pascal@24034 505 print " mov ax,[" di "+32]"
pascal@24034 506 print " endif"
pascal@24034 507 print " mov bl,ah"
pascal@24034 508 print " mov bh,0"
pascal@24034 509 print " else"
pascal@24034 510 print " mov al,[" di "+33]"
pascal@24034 511 print " cbw"
pascal@24034 512 $0=" endif"
pascal@24034 513 }
pascal@24034 514 if (/sub/) {
pascal@24034 515 print " ifdef ROCKRIDGE"
pascal@24034 516 print " sub dx,bx"
pascal@24034 517 print " else"
pascal@24034 518 print
pascal@24034 519 $0=" endif"
pascal@24034 520 isiso=0
pascal@24034 521 }
pascal@21791 522 }
pascal@21754 523 if (/entrysize =/) isiso=5
pascal@21754 524 if (isiso == 5) { # ISO9660.LST
pascal@21754 525 if (/ax,ax/) next
pascal@24022 526 if (/word ptr \[.i\+3.\],ax/) next
pascal@21754 527 sub(/ax/,"cx")
pascal@21754 528 sub(/je/,"jcxz")
pascal@23996 529 if (/jcxz/) {
pascal@23996 530 hold=0
pascal@23996 531 print s
pascal@24022 532 print " stc"
pascal@24022 533 print "returnCXZC:"
pascal@24022 534 sub(/@1@1../,"returnC")
pascal@23996 535 print
pascal@24022 536 if (is386) $0=" mov dword ptr [" si "+6],eax"
pascal@24019 537 else {
pascal@24022 538 print " mov word ptr [" si "+8],dx"
pascal@24022 539 $0=" mov word ptr [" si "+6],ax"
pascal@24019 540 }
pascal@23996 541 }
pascal@21754 542 if (/return/) isiso=0
pascal@21754 543 }
pascal@21754 544 if (/do s\+\+; while/) isiso=3
pascal@23996 545 if (isiso == 3) { # ISO9660.LST
pascal@24022 546 if (/do \{/) print "while1:"
pascal@21754 547 sub(/cmp byte ptr \[.i\]/,"sub al")
pascal@21754 548 if (/inc /) { r=$2; print; next }
pascal@21754 549 if (/al,0/) print " mov al,[" r "]"
pascal@24034 550 if (/word ptr \[si\],-1/) $0=" not word ptr [si] ; zero'd in BSS"
pascal@24034 551 sub(/al,32/,"ax,32")
pascal@24034 552 if (/byte ptr \[si\+30\],al/) $0=" xchg ax,cx"
pascal@24020 553 if (/al,byte ptr \[/) next
pascal@21754 554 if (/byte ptr \[.*\],0/) next
pascal@24022 555 if (/byte ptr \[si\+31\],al/) next
pascal@23996 556 }
pascal@24034 557 if (/ptr .isoreaddir/) {
pascal@24034 558 print " ifdef ISOHOOK"
pascal@24034 559 print " push cx"
pascal@24034 560 print
pascal@24034 561 print " pop cx"
pascal@24034 562 print " else"
pascal@24034 563 print
pascal@24034 564 $0=" endif"
pascal@24034 565 isiso=1
pascal@24034 566 }
pascal@23996 567 if (isiso == 1) { # ISO9660.LST
pascal@24034 568 if (/xor/) {
pascal@24034 569 $0=" xor cl,32"
pascal@24034 570 isiso=18
pascal@24034 571 }
pascal@23996 572 if (/n = name;/) {
pascal@23996 573 isiso=19
pascal@24034 574 print " xchg dl,byte ptr [di] ; c"
pascal@21791 575 }
pascal@24022 576 sub(/jne/,"jnc")
pascal@24022 577 if (/short @2@450/) $0=" jc returnC"
pascal@24022 578 if (/je/) $0=" jc while1"
pascal@24022 579 if (/short @2@562/) sub(/@2@562/,"jne_returnNotC")
pascal@24022 580 if (/jmp/) $0=" jmp jne_returnNotC"
pascal@23996 581 if (/ax,word ptr \[si\+4\]/) $0=" xchg ax,bx ; " $0
pascal@24022 582 if (/\[di\],al/ || /al,byte ptr/) next
pascal@24022 583 if (/@2@338/) next
pascal@23996 584 if (/ax,-1/) next
pascal@23996 585 if (/inc di/ || /@@0/) next
pascal@24022 586 if (/@2@142$/) print " inc di"
pascal@21735 587 }
pascal@24022 588 if (/i\+34\]/) next
pascal@24034 589 if (/di,offset DGROUP:_isostate/) {
pascal@24034 590 sub(/mov/,";mov")
pascal@24034 591 sub(/di,/,"si,")
pascal@24034 592 swapsidi=1
pascal@24034 593 }
pascal@24034 594 if (/^ ret/) swapsidi=0
pascal@21791 595 } # file == "iso9660.cpp"
pascal@21729 596 if (wascall) {
pascal@21729 597 if (rcall != "") {
pascal@21729 598 if (/,ax$/) print " mov " rcall ",ax"
pascal@21729 599 else print " xchg ax," rcall
pascal@21729 600 wascall=0
pascal@21729 601 }
pascal@21729 602 else if (/^ mov .i,ax$/) {
pascal@21729 603 split($2,y,",")
pascal@21729 604 rcall=y[1]
pascal@21729 605 next
pascal@21729 606 }
pascal@21729 607 else wascall=0
pascal@21729 608 }
pascal@21729 609 if (/^ call /) { wascall=1; rcall="" }
pascal@20458 610 if (hold == 0) {
pascal@20458 611 s=$0
pascal@20534 612 if (/^ mov .[ix],bx$/ || /^ mov .[ix],.i$/) {
pascal@20543 613 r=$2; kept=0
pascal@20458 614 hold=1; split($2,regs,","); next
pascal@20458 615 }
pascal@21729 616 if (/^ inc e?.[ixhl]/ || /^ dec e?.[ixhl]/) {
pascal@20458 617 hold=2; r=$2; next
pascal@20458 618 }
pascal@20458 619 if (/^ mov [abcds][ix],/ && ! /,.s/) {
pascal@20458 620 hold=3; split($2,regs,","); next
pascal@20458 621 }
pascal@20458 622 if (/^ movzx eax,ax$/) { hold=4; next }
pascal@20544 623 if (/^ cmp word ptr/ || /^ cmp [bcd]x,/) {
pascal@20543 624 split($0,regs,",")
pascal@20543 625 if (isnum(regs[2]) && regs[2] != 0 &&
pascal@20543 626 (regs[2] % 256) == 0) {
pascal@20549 627 hold=5; next
pascal@20543 628 }
pascal@20543 629 }
pascal@20630 630 if (/^ mov ax,cs$/) { hold=6; kept=0; next }
pascal@20630 631 if (/^ mov cl,4$/) { hold=7; next }
pascal@20630 632 if (/^ cmp word ptr DGROUP:.*,0$/) {
pascal@20630 633 hold=8; split($2,regs,","); next
pascal@20630 634 }
pascal@20634 635 if (/^ cbw/) { hold=11; kept=0; next }
pascal@20634 636 if (/^ add [abcds][ix],2$/) {
pascal@20634 637 split($2,regs,","); hold=12; next
pascal@20634 638 }
pascal@20634 639 if (/^ sub [abcds][ix],2$/) {
pascal@20634 640 split($2,regs,","); hold=13; next
pascal@20634 641 }
pascal@21569 642 if (/^ push dx$/) {
pascal@21569 643 hold=14; next;
pascal@21569 644 }
pascal@20458 645 }
pascal@20458 646 else if (hold == 1) {
pascal@20543 647 if (/^ ;/) { line[kept++]=$0; next }
pascal@20458 648 hold=0; split($2,args,","); op=""
pascal@20458 649 if ($1 == "add") op="+"
pascal@20458 650 if ($1 == "sub") op="-"
pascal@20751 651 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 652 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20543 653 if (op != "" && regs[1] == args[1]) {
pascal@20543 654 if (isnum(args[2])) {
pascal@20630 655 for (i = kept++; i > 0; i--) line[i] = line[i-1]
pascal@20630 656 line[0] = "\tlea\t" regs[1] ",[" regs[2] op args[2] "]"
pascal@22288 657 sub(/\+-/,"-",line[0])
pascal@20630 658 hold=10; next
pascal@20543 659 }
pascal@20543 660 line[kept++]=$0
pascal@20543 661 hold=1
pascal@20458 662 next
pascal@20458 663 }
pascal@20520 664 if (/^ pop [ds]i/ && regs[2] ~ /^[ds]i$/) {
pascal@20520 665 print " xchg " r
pascal@20520 666 }
pascal@20543 667 else print s
pascal@20543 668 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20458 669 }
pascal@20458 670 else if (hold == 2) {
pascal@21729 671 split($0,args,",")
pascal@21729 672 if (/^ mov / && r == args[2]) { print s; s=$0; next }
pascal@21729 673 split($2,args,",")
pascal@21729 674 hold=0; print s
pascal@20458 675 if ($1 == "or" && r == args[1] && r == args[2]) next # don't clear C ...
pascal@20458 676 }
pascal@20458 677 else if (hold == 3) {
pascal@20458 678 hold=0
pascal@21576 679 if (/^ call / && regs[2] == "ax") s=" xchg ax," regs[1]
pascal@20542 680 if (/^ add [abcds][ix],/) {
pascal@20458 681 split($2,regs2,",")
pascal@20458 682 if (regs[1] == regs2[1] && (regs2[2] == "offset" || isnum(regs2[2]))) {
pascal@20549 683 t=$0; sub(/mov/,$1,s); sub(/add/,"mov",t)
pascal@20458 684 print t; print s; next
pascal@20458 685 }
pascal@20458 686 }
pascal@20458 687 print s
pascal@20458 688 }
pascal@20458 689 else if (hold == 4) {
pascal@20458 690 hold=0
pascal@20458 691 if (/^ push eax$/) {
pascal@20458 692 print " push 0"; print " push ax"; next
pascal@20458 693 } else { print s }
pascal@20458 694 }
pascal@20543 695 else if (hold == 5) {
pascal@20543 696 hold=0
pascal@20543 697 if ($1 == "jae" || $1 == "jb") {
pascal@20544 698 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 699 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20543 700 s = s "/256"
pascal@20543 701 }
pascal@20543 702 print s
pascal@20543 703 }
pascal@20630 704 else if (hold == 6) {
pascal@20630 705 if (($1 == "and" || $1 == "add") && $2 ~ /^ax,/) {
pascal@20630 706 line[kept++]=$0
pascal@20630 707 next
pascal@20630 708 }
pascal@20630 709 p=$0
pascal@20630 710 if (/^ movzx eax,ax$/) {
pascal@20630 711 s=" mov eax,cs"; p=""
pascal@20630 712 }
pascal@20630 713 print s
pascal@20630 714 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20630 715 if (p != "") print p
pascal@20630 716 hold=0; next
pascal@20630 717 }
pascal@20630 718 else if (hold == 7) {
pascal@20458 719 hold=0
pascal@20520 720 if (/^ call near ptr N_LXURSH@$/) {
pascal@20520 721 print " extrn N_LXURSH@4:near"
pascal@20520 722 print " call near ptr N_LXURSH@4"
pascal@20520 723 next
pascal@20520 724 }
pascal@20528 725 if (/^ call near ptr N_LXLSH@$/) {
pascal@20528 726 print " extrn N_LXLSH@4:near"
pascal@20528 727 print " call near ptr N_LXLSH@4"
pascal@20528 728 next
pascal@20528 729 }
pascal@20520 730 print s
pascal@20458 731 }
pascal@20630 732 else if (hold == 8) {
pascal@20630 733 if ($1 == "je" || $1 == "jne") { p=$0; hold=9; next }
pascal@20630 734 hold=0
pascal@20630 735 print s
pascal@20630 736 }
pascal@20630 737 else if (hold == 9) {
pascal@20630 738 hold=0; split($2,args,",")
pascal@20630 739 if (/^ mov ax,/ && args[2] == regs[1]) {
pascal@20630 740 print; print " or ax,ax"; print p; next
pascal@20630 741 }
pascal@20630 742 print s; print p;
pascal@20630 743 }
pascal@20630 744 else if (hold == 10) {
pascal@20751 745 split($2,args,","); op=""
pascal@20751 746 if ($1 == "add") op="+"
pascal@20751 747 if ($1 == "sub") op="-"
pascal@20751 748 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 749 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20751 750 if (op != "" && isnum(args[2])) {
pascal@20751 751 split(line[0],reg,",")
pascal@20751 752 if (substr(reg[1],length(reg[1])-1,2) == args[1]) {
pascal@20751 753 line[0] = substr(line[0],1,length(line[0])-1) op args[2] "]"
pascal@20751 754 next
pascal@20751 755 }
pascal@20751 756 }
pascal@20630 757 hold=0
pascal@20630 758 if (/^ mov [sd]i,ax$/) {
pascal@20630 759 split($2,args,",")
pascal@20630 760 for (i = 0; i < kept; i++) {
pascal@20630 761 sub(/ax/,args[1],line[i]); print line[i]
pascal@20630 762 }
pascal@20630 763 next
pascal@20630 764 }
pascal@20630 765 for (i = 0; i < kept; i++) print line[i]
pascal@20630 766 }
pascal@20634 767 else if (hold == 11) {
pascal@20634 768 if (/^ inc ax$/ || /^ dec ax$/) {
pascal@20634 769 line[kept++]=$0; next
pascal@20634 770 }
pascal@20634 771 split($2,args,",")
pascal@20634 772 if (/^ mov cl,/) {
pascal@20634 773 split($2,args,",")
pascal@20634 774 if (args[2] >= 8) {
pascal@20634 775 line[kept++]=$0; next
pascal@20634 776 }
pascal@20634 777 }
pascal@20634 778 if (!/^ shl ax,/ || (args[2] != "cl" && args[2] < 8)) {
pascal@20634 779 print " cbw "
pascal@20634 780 }
pascal@20634 781 for (i = 0; i < kept; i++) print line[i]
pascal@20634 782 hold=kept=0
pascal@20634 783 }
pascal@20634 784 else if (hold == 12) {
pascal@20634 785 hold=0
pascal@20634 786 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 787 print " inc " regs[1]
pascal@20634 788 print " inc " regs[1]
pascal@20634 789 }
pascal@20634 790 else print " add " regs[1] ",2"
pascal@20634 791 }
pascal@20634 792 else if (hold == 13) {
pascal@20634 793 hold=0
pascal@20634 794 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 795 print " dec " regs[1]
pascal@20634 796 print " dec " regs[1]
pascal@20634 797 }
pascal@20634 798 else print " sub " regs[1] ",2"
pascal@20634 799 }
pascal@21569 800 else if (hold == 14) {
pascal@21569 801 if (/^ push ax$/) { hold++; next; }
pascal@21569 802 print " push dx";
pascal@21569 803 hold=0;
pascal@21569 804 }
pascal@21569 805 else if (hold == 15) {
pascal@21569 806 if (/^ pop eax$/) { hold++; next; }
pascal@21569 807 print " push dx";
pascal@21569 808 print " push ax";
pascal@21569 809 hold=0;
pascal@21569 810 }
pascal@21569 811 else if (hold == 16) {
pascal@21569 812 hold=0;
pascal@21569 813 if (/^ shr eax,16$/) { print " xchg ax,dx"; next; }
pascal@21569 814 print " push dx";
pascal@21569 815 print " push ax";
pascal@21569 816 print " pop eax";
pascal@21569 817 }
pascal@21569 818 else if (hold == 17) {
pascal@21569 819 hold=0;
pascal@21569 820 if (/^ cmp ax,-1$/) { print " inc ax"; next; }
pascal@21569 821 }
pascal@21576 822 if (/^ call near ptr @fileexist\$/ || # return boolean :
pascal@21576 823 /^ call near ptr @isoreaddir\$/ || # 0=true, -1=false
pascal@21628 824 /^ call near ptr @isoreset\$/ ||
pascal@21628 825 /^ call near ptr @isoopen\$/ ||
pascal@21628 826 /^ call near ptr @isoreadsector\$/ ||
pascal@21628 827 /^ call near ptr @strhead\$/ ||
pascal@23984 828 /^ call near ptr @strcmp\$/ ||
pascal@21576 829 /^ call near ptr @argstr\$/ ||
pascal@21576 830 /^ call near ptr @argnum\$/) { print; hold=17; next; }
pascal@20458 831 s=$0
pascal@20458 832 # These optimisation may break ZF or CF
pascal@20485 833 if (/^ sub sp,2$/) { print " push ax"; next }
pascal@20485 834 if (/^ sub sp,4$/) { print " push ax"; print " push ax"; next }
pascal@20485 835 if (/^ add sp,4$/) { print " pop cx"; print " pop cx"; next }
pascal@20458 836 if (/^ mov d*word ptr .*,0$/ || /^ mov dword ptr .*,large 0$/) {
pascal@20458 837 sub(/mov/,"and",s); print s; next # slower
pascal@20458 838 }
pascal@20458 839 if (/^ mov d*word ptr .*,-1$/ || /^ mov dword ptr .*,large -1$/) {
pascal@20458 840 sub(/mov/,"or",s); print s; next # slower
pascal@20458 841 }
pascal@20458 842 if (/^ or .*,0$/ || /^ and .*,-1$/) next
pascal@20458 843 if (/^ or [abcd]x,/) {
pascal@20458 844 split($2,args,",")
pascal@20458 845 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 846 print " or " substr(args[1],1,1) "l," args[2]; next
pascal@20458 847 }
pascal@20458 848 }
pascal@20458 849 if (/^ and [abcd]x,/) {
pascal@20458 850 split($2,args,",")
pascal@20459 851 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 852 print " and " substr(args[1],1,1) "l," args[2]; next
pascal@20458 853 }
pascal@20458 854 }
pascal@20458 855 if (/^ or e[abcd]x,/) {
pascal@20458 856 split($2,args,",")
pascal@20458 857 if (args[2] == "large") { args[2] = $3 }
pascal@20458 858 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 859 print " or " substr(args[1],2,1) "l," args[2]; next
pascal@20458 860 }
pascal@20458 861 }
pascal@20458 862 if (/^ and e[abcd]x,/) {
pascal@20458 863 split($2,args,",")
pascal@20458 864 if (args[2] == "large") { args[2] = $3 }
pascal@20459 865 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 866 print " and " substr(args[1],2,1) "l," args[2]; next
pascal@20458 867 }
pascal@20458 868 }
pascal@20458 869 if (/^ or e[abcds][ix],/) {
pascal@20458 870 split($2,args,",")
pascal@20458 871 if (args[2] == "large") { args[2] = $3 }
pascal@20458 872 if (isnum(args[2]) && args[2] >= 0 && args[2] < 65536) {
pascal@20458 873 print " or " substr(args[1],2) "," args[2]; next
pascal@20458 874 }
pascal@20458 875 }
pascal@20458 876 if (/^ and e[abcds][ix],/) {
pascal@20458 877 split($2,args,",")
pascal@20458 878 if (args[2] == "large") { args[2] = $3 }
pascal@20459 879 if (isnum(args[2]) && args[2] >= -65536 && args[2] < 0) {
pascal@20458 880 print " and " substr(args[1],2) "," args[2]; next
pascal@20458 881 }
pascal@20458 882 }
pascal@20543 883 if (/^ add word ptr/ || /^ sub word ptr/ ||
pascal@20544 884 /^ add [bcd]x,/ || /^ sub [bcd]x,/) {
pascal@20542 885 split($0,args,",")
pascal@20542 886 if (isnum(args[2]) && (args[2] % 256 == 0)) {
pascal@20544 887 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 888 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20542 889 print s "/256"; next
pascal@20542 890 }
pascal@20542 891 }
pascal@20546 892 if (/^ add dword ptr/ || /^ sub dword ptr/) {
pascal@20458 893 split($0,args,",")
pascal@20543 894 if (args[2] == "large") { args[2] = $3 }
pascal@20458 895 if (isnum(args[2])) {
pascal@20546 896 if (args[2] % 16777216 == 0) {
pascal@20546 897 sub(/dword/,"byte",s)
pascal@20543 898 sub(/\],/,"+3],",s) || sub(/,/,"+3,",s)
pascal@20458 899 print s "/16777216"; next
pascal@20458 900 }
pascal@20458 901 if (args[2] % 65536 == 0) {
pascal@20546 902 sub(/dword/,"word",s)
pascal@20543 903 sub(/\],/,"+2],",s) || sub(/,/,"+2,",s)
pascal@20458 904 print s "/65536"; next
pascal@20458 905 }
pascal@20458 906 }
pascal@20458 907 }
pascal@20458 908 if (/^ mov e.x,/) {
pascal@20458 909 split($2,args,",")
pascal@20458 910 r=args[1]
pascal@20458 911 if (args[2] == "large") { args[2] = $3 }
pascal@20458 912 if (isnum(args[2]) && args[2] % 65536 == args[2]) {
pascal@20458 913 if (args[2] % 256 == args[2] || args[2] % 256 == 0) {
pascal@20458 914 print " xor " r "," r
pascal@20458 915 if (args[2] == 0) next
pascal@20458 916 x=" mov " substr(r,2,1)
pascal@20458 917 if (args[2] % 256 == 0) {
pascal@20458 918 print x "h," args[2] "/256"
pascal@20458 919 }
pascal@20458 920 else { print x "l," args[2] }
pascal@20458 921 next
pascal@20458 922 }
pascal@20458 923 }
pascal@20458 924 }
pascal@21576 925 if (afterjmp) print ";" $0
pascal@21576 926 else print
pascal@24022 927 if (/^ jmp / || /boot_kernel\(\);/ ||
pascal@23992 928 /^ call near ptr @die\$qpxzc/ ||
pascal@23992 929 /^ call near ptr @exit\$qv/) afterjmp=1
pascal@20458 930 }