wok annotate linld/stuff/src/pipehole.awk @ rev 24579

linld: do not confuse memtop and topload
author Pascal Bellard <pascal.bellard@slitaz.org>
date Sun Feb 27 11:43:07 2022 +0000 (2022-02-27)
parents c11594098e34
children
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 \[/) next
pascal@21984 42 }
pascal@23992 43 if (/buf_cmdline\+1/) {
pascal@23992 44 islinld=5
pascal@23996 45 print " mov bx,offset DGROUP:_buf_cmdline+1"
pascal@23996 46 sub(/offset DGROUP:_buf_cmdline\+1/,"bx")
pascal@23992 47 }
pascal@23804 48 if (islinld==5) {
pascal@23996 49 if (/bx,offset DGROUP:_buf_cmdline/) $0=" dec bx"
pascal@23993 50 if (/ax,word ptr/) next
pascal@23992 51 if (/call/) islinld=0
pascal@23804 52 }
pascal@23996 53 if (/bx,word ptr DGROUP:_cmdstr\+6/) next
pascal@23996 54 if (/_cmdstr\+6,0/) {
pascal@24013 55 print " mov bx,word ptr [si+6]"
pascal@23996 56 $0=" or bx,bx"
pascal@23996 57 }
pascal@24022 58 if (/heap_top \+1;/) islinld=6
pascal@24022 59 if (islinld==6) {
pascal@24022 60 sub(/ax/,"bx")
pascal@24022 61 if (/strcatb/) {
pascal@24022 62 print " dec bx"
pascal@24022 63 islinld=4
pascal@24022 64 }
pascal@24022 65 }
pascal@24564 66 if (/minram>>16/) islinld=7
pascal@24564 67 if (islinld==7) {
pascal@24564 68 if (/endif/) islinld=0
pascal@24564 69 if (/mov/) sub(/ax/,"cx");
pascal@24578 70 if (/;/ || /_memtop/) print
pascal@24578 71 if (/cmdnum/) {
pascal@24578 72 print
pascal@24564 73 print " ja call_exit"
pascal@24564 74 }
pascal@24564 75 next
pascal@24564 76 }
pascal@24564 77 if (/mincpu > cputype/) islinld=8
pascal@24564 78 if (islinld==8) {
pascal@24564 79 if (/endif/) islinld=0
pascal@24564 80 if (/jbe/) $0=" ja call_exit"
pascal@24564 81 }
pascal@21984 82 } # file == "linld.cpp"
pascal@21791 83 if (file == "himem.cpp") {
pascal@24019 84 if (/sp,bp/ || /pop bp/ || /enter/ || /leave/) next
pascal@21984 85 if (/void load_image/) ishimem=1
pascal@21791 86 if (ishimem == 1 && is386 == 0) {
pascal@21791 87 if (/si\+8\]$/ || /si\+4\]$/ || /si\+16\]$/) next
pascal@21791 88 if (/si\+6\]$/ || /si\+2\]$/ || /si\+14\]$/) sub(/mov dx,/,"les dx,d")
pascal@24013 89 if (/si\+12\],ax/ || /si\+16\],ax/ || /di\+2\],ax/ || /DGROUP:_himem_buf\+2,ax/) sub(/,ax/,",es")
pascal@23996 90 if (/dx,dword ptr \[si\+14\]/ || /DGROUP:_himem_buf,dx/) sub(/dx/,"ax")
pascal@21984 91 }
pascal@21984 92 if (ishimem == 1) {
pascal@21984 93 if (/do \{/) ishimem=2
pascal@24034 94 if (/bx,si/ || /di,ax/ || /push bp/ || /bp,sp/ || /push di/ || /push si/) next
pascal@23996 95 if (/sp,2/ || /bp\+4/) next
pascal@21984 96 }
pascal@21984 97 if (ishimem == 2) {
pascal@21984 98 if (/movzx/) print " cwde"
pascal@23996 99 if (/bp-2/ || /di,ax/ || /bx,di/ || /bx,si/) next
pascal@21984 100 if (/storepage.bufv/) {
pascal@21984 101 print " inc ax"
pascal@21984 102 print " push ax"
pascal@21984 103 }
pascal@21984 104 if (/buf \+= size;/) {
pascal@21984 105 print " pop ax"
pascal@21984 106 }
pascal@23996 107 if (/i\+12/) ishimem=20
pascal@23996 108 }
pascal@23996 109 if (ishimem == 20) {
pascal@24013 110 if (/loadfail/) next
pascal@23996 111 if (/je/) {
pascal@23996 112 print " extrn jmploadfailure"
pascal@23996 113 $0=" jne short jmploadfailure"
pascal@23996 114 }
pascal@23989 115 if (/endp/) ishimem=0
pascal@21791 116 }
pascal@23992 117 if (/@memcpy_image\$qp11image_himem/) next
pascal@24013 118 if (/far last_ditch/) ishimem=3
pascal@23992 119 if (ishimem == 3) {
pascal@23996 120 sub(/DGROUP:_imgs\+4,/,"[si+4],")
pascal@24013 121 if (/bx,di/ || /di,ax/) next
pascal@23992 122 }
pascal@21791 123 } # file == "himem.cpp"
pascal@21791 124 if (file == "load.cpp") {
pascal@23996 125 if (isload != 3 && isload != 6) { # LOAD.LST
pascal@23996 126 if (/,si/ || /si,/ || /\[si/) sub(/si/,"di")
pascal@23996 127 else if (/,di/ || /di,/ || /\[di/) sub(/di/,"si")
pascal@23996 128 }
pascal@23996 129 if (/moverm\(/) isload=16
pascal@23996 130 if (isload != 16 && /bx,si/) next
pascal@23996 131 if (/@moverm/) isload=0
pascal@23992 132 if (/readrm\(m, 0x200/) isload=15
pascal@23992 133 if (isload == 15) { # LOAD.LST
pascal@23996 134 if (/bx,si/) next
pascal@23992 135 if (/call/) isload=0
pascal@23992 136 }
pascal@23989 137 if (/load_image\(/) {
pascal@23989 138 if (isload == 3) isload=13
pascal@23989 139 else isload=14
pascal@23989 140 }
pascal@23989 141 if (isload == 14) { # LOAD.LST
pascal@23996 142 if (/call/) $0=" jmp short load_imagez"
pascal@23989 143 if (/ret/) isload=0
pascal@23989 144 if (/pop/ || /ret/ || /push/) next
pascal@23989 145 }
pascal@23989 146 if (isload == 13) { # LOAD.LST
pascal@23991 147 if (/pop/) isload=3
pascal@23991 148 if (/push/ || /call/ || /pop/) next
pascal@23989 149 }
pascal@22152 150 if (/i\+21\],513$/) isload=11
pascal@21984 151 if (isload == 12) { # LOAD.LST
pascal@21984 152 if (/cmp/) next
pascal@21984 153 if (/jb/) isload=0
pascal@21984 154 sub(/jb/,"jcxz")
pascal@21984 155 }
pascal@21984 156 if (isload == 11) { # LOAD.LST
pascal@21984 157 if (/cmp/) {
pascal@21984 158 print " mov cx,513"
pascal@22152 159 sub(/cmp /,"sub cx,")
pascal@22152 160 sub(/,513/,"")
pascal@21984 161 }
pascal@21984 162 if (/jb/) isload=12
pascal@21984 163 sub(/jb/,"ja")
pascal@21984 164 }
pascal@22170 165 sub(/_imgs\+65534/,"_imgs-2")
pascal@21791 166 if (/setup_sects == 0/) isload=9
pascal@21791 167 if (isload == 9) { # LOAD.LST
pascal@23999 168 sub(/,0/,",al ; worst case 2k boundary (iso)")
pascal@21791 169 if (/jne/) isload=0
pascal@21791 170 }
pascal@21757 171 if (/cmd_line_ptr =/ && is386 == 0) isload=7
pascal@21757 172 if (isload == 7) { # LOAD.LST
pascal@22181 173 if (/add/ || /xor/ || /extrn/ || /N_LXLSH@/ || /cl,4/ || /,ax/) next
pascal@22170 174 if (/enable A20 if needed/) { print nextinst; isload=0 }
pascal@22152 175 if (/i-463/) $0=" mov bx,-463"
pascal@22170 176 if (/i-465/) {
pascal@22170 177 sub(/465/,"2"); sub(/\[/,"[bx+")
pascal@22170 178 nextinst=$0; sub(/-2\],-23745/,"],8000h",nextinst)
pascal@22170 179 }
pascal@21757 180 if (/,dx/) {
pascal@21757 181 print " mov cl,12"
pascal@21757 182 print " shr ax,cl"
pascal@22181 183 print " mov bx,55"
pascal@21757 184 sub(/dx/,"ax")
pascal@21757 185 }
pascal@21757 186 }
pascal@23992 187 if (/pm_low == 0/) {
pascal@23991 188 print " push di"
pascal@23996 189 print " push si"
pascal@23991 190 isload=6
pascal@23991 191 }
pascal@21757 192 if (isload == 6) { # LOAD.LST
pascal@23991 193 if (/si\+2/) {
pascal@23991 194 print " cmpsw"
pascal@23991 195 next
pascal@23991 196 }
pascal@23989 197 if (/les/) sub(/bx,/,"di,")
pascal@23991 198 if (/bx\+4/ || /es:/ || /call/ || /pop/ || /ret/) next
pascal@23989 199 if (/si\+6/) {
pascal@23989 200 print " movsw"
pascal@23989 201 print " movsw"
pascal@23989 202 print " movsw"
pascal@23989 203 print " movsw"
pascal@23996 204 print " pop si"
pascal@23991 205 print "load_imagez:"
pascal@21757 206 next
pascal@21757 207 }
pascal@21757 208 }
pascal@21757 209 if (isload == 5) { # LOAD.LST
pascal@21757 210 sub(/ax,/,"bx,")
pascal@23996 211 if (/@puts\$qpxzc/) isload=0
pascal@21757 212 if (/mov bx,ax/) next
pascal@23996 213 sub(/,word ptr \[di\+29\]/,",cx")
pascal@21757 214 }
pascal@23996 215 if (/_cmdnum\+14/ && is386 == 0) isload=4
pascal@22180 216 if (isload == 4) { # LOAD.LST
pascal@23996 217 if (/_cmdnum\+14/) next
pascal@23996 218 if (/_cmdnum\+12$/) {
pascal@23996 219 $0=" les dx,dword ptr [bx+12]"
pascal@21757 220 }
pascal@21791 221 sub(/,ax/,",es")
pascal@22181 222 if (/add ax,word ptr/) $0=" add ax,cx"
pascal@22181 223 if (/i\+29\],0/) {
pascal@22181 224 sub(/,0$/,"")
pascal@22181 225 sub(/cmp /,"mov cx,")
pascal@22181 226 }
pascal@22181 227 sub(/je/,"jcxz")
pascal@23996 228 if (/@strcpy/) isload=0
pascal@23992 229 if (/\+0x200/) isload=5
pascal@21757 230 }
pascal@23996 231 if (/void load_initrd\(\)/) { isload=3; isload2=0 }
pascal@21754 232 if (isload == 3) { # LOAD.LST
pascal@24015 233 if (/bx,offset DGROUP:_imgs\+28/ || /push si/) next
pascal@24015 234 if (/si,offset DGROUP:_imgs\+28/) print " push si"
pascal@23996 235 if (/cmdstr\+4,0/) {
pascal@23996 236 isload2++
pascal@23996 237 print " mov ax,word ptr DGROUP:_cmdstr+4"
pascal@23996 238 $0=" or ax,ax"
pascal@23996 239 }
pascal@23996 240 if (isload2 && /DGROUP:_cmdstr\+4/) $0=";" $0
pascal@23994 241 if (/je short @2@.*/) sub(/@2@.*/,"load_initrd_ret")
pascal@23992 242 if (/mov ax,word ptr \[si\]/) $0=" lodsw"
pascal@23991 243 if( /jmp/) {
pascal@23991 244 print "load_initrd_ret:"
pascal@23991 245 print " ret"
pascal@23991 246 next
pascal@23991 247 }
pascal@23996 248 if (/@loadfailure/) {
pascal@23996 249 print " global jmploadfailure:near"
pascal@23996 250 print "jmploadfailure:"
pascal@23996 251 }
pascal@21754 252 sub(/\[di/,"[bx")
pascal@23992 253 sub(/di,/,"bx,")
pascal@21754 254 }
pascal@23996 255 if (/mode = vid_mode/) { isload=2; print " mov bx,offset _cmdnum" }
pascal@21750 256 if (isload == 2) { # LOAD.LST
pascal@23996 257 if (/DGROUP:_cmdnum/) { sub(/DGROUP:_cmdnum/,"[bx"); $0=$0 "]"}
pascal@21750 258 sub(/,0/,""); sub(/cmp /,"mov cx,")
pascal@21750 259 sub(/je/,"jcxz")
pascal@21750 260 if (/ax,word/) next
pascal@21750 261 sub(/,ax/,",cx")
pascal@23992 262 if (/starting linux 1\.3\.73/) isload=0
pascal@21750 263 }
pascal@23996 264 if (/_rm_size=0x200/ || /heap_top = _rm_buf/) isload=1
pascal@21750 265 if (isload == 1) { # LOAD.LST
pascal@21791 266 if (/ptr .die\$qpxzc/) $0="@die@:\n" $0
pascal@21729 267 if (/mov al,byte ptr/ && is386) {
pascal@22152 268 sub(/mov al/,"movzx eax")
pascal@21729 269 }
pascal@21791 270 if (is386 == 0) {
pascal@23999 271 if (/m->size -= _rm_size/) print " cwd ; do not trust rewind result (iso case)"
pascal@21791 272 sub(/,0$/,",dx")
pascal@21791 273 }
pascal@21729 274 if (/ax,word ptr/) next
pascal@21729 275 if (/^ call/) isload=0
pascal@21729 276 }
pascal@21791 277 } # file == "load.cpp"
pascal@21791 278 if (file == "iso9660.cpp") {
pascal@24034 279 if (swapsidi == 1) {
pascal@24034 280 if (/\[si/) sub(/\[si/,"[di")
pascal@24034 281 else (/\[di/) sub(/\[di/,"[si")
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 if (/,di/) sub(/,di/,",si")
pascal@24034 286 if (/si,/) sub(/si,/,"di,")
pascal@24034 287 else if (/di,/) sub(/di,/,"si,")
pascal@24034 288 }
pascal@24022 289 if (/di,offset DGROUP:_buf2k/) { si="si"; di="di" }
pascal@24022 290 if (/si,offset DGROUP:_buf2k/) { si="di"; di="si" }
pascal@24022 291 if (/leave/ || /enter/ || /bp/ || /sub sp,/) next
pascal@24022 292 if (/ptr \[.i\+8\],dx/) next
pascal@24022 293 if (/ptr \[.i\+6\],ax/) next
pascal@24022 294 if (/ptr \[.i\+6\],eax/) next
pascal@24020 295 if (/x,word ptr \[.i\+32\]/) next
pascal@24019 296 if (/add word ptr \[.i\],ax/) sub(/ax/,"cx")
pascal@24034 297 if (/ax,word ptr \[si\+18\]/) sub(/mov ax,/,"les ax,d")
pascal@24034 298 if (/ax,word ptr \[si\+20\]/) next
pascal@24034 299 if (/word ptr \[si\+25\],ax/) sub(/ax/,"es")
pascal@23996 300 sub(/di,word ptr DGROUP:_isostate\+2/,"di,word ptr [si+2]")
pascal@24034 301 if (/-257/) isiso=22
pascal@24034 302 if (isiso == 22) {
pascal@24034 303 sub(/-257/,"-257 ; clear C")
pascal@24034 304 if (/je/) {
pascal@24034 305 print " cbw"
pascal@24034 306 print " xchg ax,bx"
pascal@24034 307 print " xchg ax,dx ; .. or ."
pascal@24034 308 $0=" je returnC"
pascal@24034 309 }
pascal@24034 310 }
pascal@24022 311 if (/p = buf2k \+ 32 \+ x->curpos/) isiso=21
pascal@24020 312 if (isiso == 21) { # ISO9660.LST
pascal@24023 313 if (/ax,/) next
pascal@24034 314 if (/.i,ax/) sub(/mov/,"xchg")
pascal@24020 315 if (/# else/) isiso=0
pascal@24020 316 }
pascal@24034 317 if (/cx,.i/) {
pascal@24034 318 if (isiso == 0) {
pascal@24034 319 print " ifndef CLEAN_ISO9660"
pascal@24034 320 print " inc " di
pascal@24034 321 print " mov cx," di
pascal@24034 322 }
pascal@24022 323 isiso=20
pascal@24022 324 }
pascal@24019 325 if (isiso == 20) { # ISO9660.LST
pascal@24020 326 if (/bx,dx/) {
pascal@24020 327 isiso=12
pascal@24020 328 next
pascal@24020 329 }
pascal@24034 330 if (/add .i,ax/ || /cbw/) next
pascal@24034 331 if (/cmp/) sub(/\[/,"[bx+")
pascal@24022 332 if (/inc cx/) next
pascal@24034 333 if (/sub/) sub(/.i/,"bx")
pascal@24034 334 sub(/inc .i/,"inc bx")
pascal@24034 335 if (/al,byte ptr/) {
pascal@24034 336 next
pascal@24034 337 }
pascal@24034 338 sub(/i-1\],12603/,"i],12603")
pascal@24034 339 if (/bx\+.i\],46/) {
pascal@24034 340 print " inc " di
pascal@24034 341 print " mov cx," di
pascal@24034 342 }
pascal@24022 343 if (/i],0/) {
pascal@24034 344 print " ifndef CLEAN_ISO9660"
pascal@24034 345 print " inc " di
pascal@24034 346 print " mov cx," di
pascal@24034 347 print " endif"
pascal@24034 348 print "seteos:"
pascal@24034 349 sub(/,0/,",bh ; clear C")
pascal@24034 350 sub(/mov byte ptr \[/,"and byte ptr [bx+")
pascal@24022 351 }
pascal@24034 352 if (/cx,.i/) next
pascal@24034 353 if (/\}/) {
pascal@24034 354 print " xchg ax,cx"
pascal@24034 355 }
pascal@24034 356 if (/cx,5/) $0=" lea dx,[" di "+5]"
pascal@24019 357 if (/filename = s;/) {
pascal@24019 358 isiso=0
pascal@24019 359 }
pascal@24019 360 }
pascal@23996 361 if (isiso == 19) { # ISO9660.LST
pascal@24022 362 if (/short @2@310/) $0=" jc restoreC"
pascal@24022 363 if (/si\+32/ || /ax,dx/ || /ax,di/ || /cmp ax,-1/ || /sub ax,/) next
pascal@24034 364 if (/ax,word ptr \[si\+28\]/) next
pascal@24020 365 if (/bx,offset/) sub(/bx/,"ax")
pascal@24034 366 sub(/dx,/,"bx,")
pascal@23996 367 if (/short @2@282/) sub(/je/,"jnc")
pascal@24034 368 if (/\[si\+30\],0/) $0=" ;or cl,cl"
pascal@24034 369 if (/short @2@478/) sub(/je/,"jcxz")
pascal@23996 370 if (/@strcmp\$qpxzct1/) {
pascal@23996 371 print
pascal@23996 372 print "restoreC:"
pascal@24034 373 $0=" mov byte ptr [di],dl ; c"
pascal@23996 374 isiso=1
pascal@23996 375 }
pascal@23996 376 }
pascal@23996 377 if (isiso == 18) { # ISO9660.LST
pascal@24022 378 if (/endif/) isiso=1
pascal@23996 379 }
pascal@23996 380 if (isiso == 17) { # ISO9660.LST
pascal@24034 381 if (/si\+18/) {
pascal@24022 382 print "next:"
pascal@24034 383 print " mov word ptr [si+20],bx"
pascal@23996 384 print
pascal@24022 385 isiso=0
pascal@24022 386 }
pascal@24022 387 if (/_buf2k\+167/) {
pascal@24022 388 print
pascal@24022 389 $0=""
pascal@23996 390 }
pascal@23996 391 else sub(/ax/,"bx")
pascal@23996 392 if (/,bx/) next
pascal@23996 393 if (/isoreadrootsector/) {
pascal@23996 394 print
pascal@24022 395 print " mov ax,word ptr [_buf2k+1]"
pascal@24022 396 print " xor ax,17475 ; clear C, CD"
pascal@24022 397 print "jne_returnNotC:"
pascal@24022 398 print " cmc"
pascal@24022 399 $0=" jne returnC"
pascal@23996 400 }
pascal@23996 401 }
pascal@24022 402 if (/if \(c\)/) isiso=16
pascal@23996 403 if (isiso == 16) { # ISO9660.LST
pascal@24022 404 if (/cmp/) {
pascal@24022 405 print " mov bx,word ptr [si+7]"
pascal@24022 406 print " mov ax,word ptr [si+11]"
pascal@24034 407 print " dec dx"
pascal@24022 408 print " jns next"
pascal@23996 409 }
pascal@24022 410 if (/isolseek/) isiso=1
pascal@24022 411 else if (! /;/) next
pascal@23996 412 }
pascal@23996 413 if (/found:/) isiso=15
pascal@23996 414 if (isiso != 15 && /si,offset DGROUP:_isostate/) $0=";" $0
pascal@23996 415 if (isiso == 15) { # ISO9660.LST
pascal@23996 416 if (/xor/) {
pascal@24020 417 print "returnC:"
pascal@24034 418 print " sbb dx,dx"
pascal@23996 419 print "return:"
pascal@23996 420 next
pascal@23996 421 }
pascal@24034 422 if (/i\+28\],cx/) {
pascal@24034 423 print " ifndef BASIC_ISO9660"
pascal@24034 424 print " xchg ax,dx"
pascal@24034 425 print " endif"
pascal@24034 426 next
pascal@24034 427 }
pascal@24022 428 if (/@1@422:/) next
pascal@23996 429 if (/\[di\],47/) isiso=17
pascal@23996 430 }
pascal@23989 431 if (isiso == 14) { # ISO9660.LST
pascal@24022 432 if (/ax,/ || /jge/) next
pascal@24022 433 sub(/mov/,"sub")
pascal@24022 434 sub(/,ax/,",8")
pascal@24020 435 if (/jmp/) {
pascal@24022 436 print " ;JUMPS"
pascal@24022 437 print " jb returnCXZC"
pascal@24022 438 $0=" ;NOJUMPS"
pascal@24022 439 isiso=0
pascal@24020 440 }
pascal@23989 441 }
pascal@24022 442 if (/p = buf2k \+ 34/) isiso=13
pascal@23988 443 if (isiso == 13) { # ISO9660.LST
pascal@24034 444 #if (/cbw/) $0=" ;cbw"
pascal@24019 445 if (/i,.i/) $0=" xchg ax,bx"
pascal@24022 446 if (/i,ax/) $0=" xchg ax," di
pascal@24034 447 if (/i,70/ || /ptr \[.i\+32\]/) next
pascal@24022 448 if (/register len/) {
pascal@24022 449 isiso=12
pascal@24022 450 }
pascal@23988 451 }
pascal@23870 452 if (isiso == 12) { # ISO9660.LST
pascal@24019 453 if (/.i\+2/) sub(/al/,"bl")
pascal@23996 454 if (/cbw/) next
pascal@24034 455 if (/dx,ax/) next
pascal@23870 456 if (/bx,dx/) next
pascal@23870 457 sub(/i,dx/,"i,bx")
pascal@24020 458 sub(/cx,/,"dx,")
pascal@24034 459 if (/bx\+.i\],0/) {
pascal@24034 460 sub(/,0/,",bh")
pascal@24034 461 }
pascal@24034 462 if (/jmp/) {
pascal@24034 463 print
pascal@24034 464 $0=" endif"
pascal@24034 465 }
pascal@24034 466 if (/jne/) {
pascal@24034 467 print " ifdef BASIC_ISO9660"
pascal@24034 468 print " lea cx,[" di "+5]"
pascal@24034 469 print " je seteos"
pascal@24034 470 print " else"
pascal@24034 471 }
pascal@24020 472 if (/while/) isiso=120
pascal@24020 473 }
pascal@24020 474 if (isiso == 120) { # ISO9660.LST
pascal@24034 475 sub(/ax/,"cx")
pascal@24034 476 if (/cmp cx,/) $0=" cmp " di ",cx"
pascal@24022 477 sub(/jae/,"jb")
pascal@24020 478 if (/endif/) isiso=0
pascal@23870 479 }
pascal@23863 480 if (/curpos >= SECT/) isiso=10
pascal@23863 481 if (isiso == 10) { # ISO9660.LST
pascal@24022 482 if (/,2048/) {
pascal@24022 483 print " xor cx,cx"
pascal@23863 484 sub(/cmp /,"mov bx,")
pascal@23863 485 sub(/i.*/,"i]")
pascal@23863 486 print
pascal@23863 487 $0=" cmp bh,2048/256"
pascal@23863 488 }
pascal@24022 489 if (/DGROUP:_buf2k\[bx\],0/) $0=" cmp word ptr [bx+" di "],cx"
pascal@24022 490 sub(/,0/,",cx")
pascal@24022 491 if (/\[.i\],cx/) isiso=14
pascal@24022 492 else if (/mov/) next
pascal@23863 493 }
pascal@21791 494 if (/<< SECTORBITS/) isiso=9
pascal@21791 495 if (isiso == 9) { # ISO9660.LST
pascal@24022 496 if (/dx,/) next
pascal@21791 497 sub(/mov ax,/,"les ax,d")
pascal@21791 498 if (/^ call/) {
pascal@21791 499 print " extrn N_LXLSH@ES:near"
pascal@21791 500 sub(/N_LXLSH@/,"N_LXLSH@ES")
pascal@21791 501 isiso=0
pascal@21791 502 }
pascal@21791 503 }
pascal@21791 504 if (/filesize =/) isiso=8
pascal@21791 505 if (isiso == 8) { # ISO9660.LST
pascal@24034 506 if (/ax,/ || /cbw/) next
pascal@21791 507 sub(/mov dx,/,"les dx,d")
pascal@24020 508 sub(/\],ax/,"],es")
pascal@24020 509 sub(/cx,/,"dx,")
pascal@24034 510 if (/DGROUP:s@\+/) {
pascal@24034 511 print
pascal@24034 512 next
pascal@24034 513 }
pascal@24034 514 if (/i\+33]/) {
pascal@24034 515 print " ifdef ROCKRIDGE"
pascal@24034 516 print " ifdef BASIC_ISO9660"
pascal@24034 517 print " add " di ",32"
pascal@24034 518 print " mov ax,[" di "]"
pascal@24034 519 print " else"
pascal@24034 520 print " mov ax,[" di "+32]"
pascal@24034 521 print " endif"
pascal@24034 522 print " mov bl,ah"
pascal@24034 523 print " mov bh,0"
pascal@24034 524 print " else"
pascal@24034 525 print " mov al,[" di "+33]"
pascal@24034 526 print " cbw"
pascal@24034 527 $0=" endif"
pascal@24034 528 }
pascal@24034 529 if (/sub/) {
pascal@24034 530 print " ifdef ROCKRIDGE"
pascal@24034 531 print " sub dx,bx"
pascal@24034 532 print " else"
pascal@24034 533 print
pascal@24034 534 $0=" endif"
pascal@24034 535 isiso=0
pascal@24034 536 }
pascal@21791 537 }
pascal@21754 538 if (/entrysize =/) isiso=5
pascal@21754 539 if (isiso == 5) { # ISO9660.LST
pascal@21754 540 if (/ax,ax/) next
pascal@24022 541 if (/word ptr \[.i\+3.\],ax/) next
pascal@21754 542 sub(/ax/,"cx")
pascal@21754 543 sub(/je/,"jcxz")
pascal@23996 544 if (/jcxz/) {
pascal@23996 545 hold=0
pascal@23996 546 print s
pascal@24022 547 print " stc"
pascal@24022 548 print "returnCXZC:"
pascal@24022 549 sub(/@1@1../,"returnC")
pascal@23996 550 print
pascal@24022 551 if (is386) $0=" mov dword ptr [" si "+6],eax"
pascal@24019 552 else {
pascal@24022 553 print " mov word ptr [" si "+8],dx"
pascal@24022 554 $0=" mov word ptr [" si "+6],ax"
pascal@24019 555 }
pascal@23996 556 }
pascal@21754 557 if (/return/) isiso=0
pascal@21754 558 }
pascal@21754 559 if (/do s\+\+; while/) isiso=3
pascal@23996 560 if (isiso == 3) { # ISO9660.LST
pascal@24022 561 if (/do \{/) print "while1:"
pascal@21754 562 sub(/cmp byte ptr \[.i\]/,"sub al")
pascal@21754 563 if (/inc /) { r=$2; print; next }
pascal@21754 564 if (/al,0/) print " mov al,[" r "]"
pascal@24034 565 if (/word ptr \[si\],-1/) $0=" not word ptr [si] ; zero'd in BSS"
pascal@24034 566 sub(/al,32/,"ax,32")
pascal@24034 567 if (/byte ptr \[si\+30\],al/) $0=" xchg ax,cx"
pascal@24020 568 if (/al,byte ptr \[/) next
pascal@21754 569 if (/byte ptr \[.*\],0/) next
pascal@24022 570 if (/byte ptr \[si\+31\],al/) next
pascal@23996 571 }
pascal@24034 572 if (/ptr .isoreaddir/) {
pascal@24034 573 print " ifdef ISOHOOK"
pascal@24034 574 print " push cx"
pascal@24034 575 print
pascal@24034 576 print " pop cx"
pascal@24034 577 print " else"
pascal@24034 578 print
pascal@24034 579 $0=" endif"
pascal@24034 580 isiso=1
pascal@24034 581 }
pascal@23996 582 if (isiso == 1) { # ISO9660.LST
pascal@24034 583 if (/xor/) {
pascal@24034 584 $0=" xor cl,32"
pascal@24034 585 isiso=18
pascal@24034 586 }
pascal@23996 587 if (/n = name;/) {
pascal@23996 588 isiso=19
pascal@24034 589 print " xchg dl,byte ptr [di] ; c"
pascal@21791 590 }
pascal@24022 591 sub(/jne/,"jnc")
pascal@24022 592 if (/short @2@450/) $0=" jc returnC"
pascal@24022 593 if (/je/) $0=" jc while1"
pascal@24022 594 if (/short @2@562/) sub(/@2@562/,"jne_returnNotC")
pascal@24022 595 if (/jmp/) $0=" jmp jne_returnNotC"
pascal@23996 596 if (/ax,word ptr \[si\+4\]/) $0=" xchg ax,bx ; " $0
pascal@24022 597 if (/\[di\],al/ || /al,byte ptr/) next
pascal@24022 598 if (/@2@338/) next
pascal@23996 599 if (/ax,-1/) next
pascal@23996 600 if (/inc di/ || /@@0/) next
pascal@24022 601 if (/@2@142$/) print " inc di"
pascal@21735 602 }
pascal@24022 603 if (/i\+34\]/) next
pascal@24034 604 if (/di,offset DGROUP:_isostate/) {
pascal@24034 605 sub(/mov/,";mov")
pascal@24034 606 sub(/di,/,"si,")
pascal@24034 607 swapsidi=1
pascal@24034 608 }
pascal@24034 609 if (/^ ret/) swapsidi=0
pascal@21791 610 } # file == "iso9660.cpp"
pascal@21729 611 if (wascall) {
pascal@21729 612 if (rcall != "") {
pascal@21729 613 if (/,ax$/) print " mov " rcall ",ax"
pascal@21729 614 else print " xchg ax," rcall
pascal@21729 615 wascall=0
pascal@21729 616 }
pascal@21729 617 else if (/^ mov .i,ax$/) {
pascal@21729 618 split($2,y,",")
pascal@21729 619 rcall=y[1]
pascal@21729 620 next
pascal@21729 621 }
pascal@21729 622 else wascall=0
pascal@21729 623 }
pascal@21729 624 if (/^ call /) { wascall=1; rcall="" }
pascal@20458 625 if (hold == 0) {
pascal@20458 626 s=$0
pascal@20534 627 if (/^ mov .[ix],bx$/ || /^ mov .[ix],.i$/) {
pascal@20543 628 r=$2; kept=0
pascal@20458 629 hold=1; split($2,regs,","); next
pascal@20458 630 }
pascal@21729 631 if (/^ inc e?.[ixhl]/ || /^ dec e?.[ixhl]/) {
pascal@20458 632 hold=2; r=$2; next
pascal@20458 633 }
pascal@20458 634 if (/^ mov [abcds][ix],/ && ! /,.s/) {
pascal@20458 635 hold=3; split($2,regs,","); next
pascal@20458 636 }
pascal@20458 637 if (/^ movzx eax,ax$/) { hold=4; next }
pascal@20544 638 if (/^ cmp word ptr/ || /^ cmp [bcd]x,/) {
pascal@20543 639 split($0,regs,",")
pascal@20543 640 if (isnum(regs[2]) && regs[2] != 0 &&
pascal@20543 641 (regs[2] % 256) == 0) {
pascal@20549 642 hold=5; next
pascal@20543 643 }
pascal@20543 644 }
pascal@20630 645 if (/^ mov ax,cs$/) { hold=6; kept=0; next }
pascal@20630 646 if (/^ mov cl,4$/) { hold=7; next }
pascal@20630 647 if (/^ cmp word ptr DGROUP:.*,0$/) {
pascal@20630 648 hold=8; split($2,regs,","); next
pascal@20630 649 }
pascal@20634 650 if (/^ cbw/) { hold=11; kept=0; next }
pascal@20634 651 if (/^ add [abcds][ix],2$/) {
pascal@20634 652 split($2,regs,","); hold=12; next
pascal@20634 653 }
pascal@20634 654 if (/^ sub [abcds][ix],2$/) {
pascal@20634 655 split($2,regs,","); hold=13; next
pascal@20634 656 }
pascal@21569 657 if (/^ push dx$/) {
pascal@21569 658 hold=14; next;
pascal@21569 659 }
pascal@20458 660 }
pascal@20458 661 else if (hold == 1) {
pascal@20543 662 if (/^ ;/) { line[kept++]=$0; next }
pascal@20458 663 hold=0; split($2,args,","); op=""
pascal@20458 664 if ($1 == "add") op="+"
pascal@20458 665 if ($1 == "sub") op="-"
pascal@20751 666 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 667 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20543 668 if (op != "" && regs[1] == args[1]) {
pascal@20543 669 if (isnum(args[2])) {
pascal@20630 670 for (i = kept++; i > 0; i--) line[i] = line[i-1]
pascal@20630 671 line[0] = "\tlea\t" regs[1] ",[" regs[2] op args[2] "]"
pascal@22288 672 sub(/\+-/,"-",line[0])
pascal@20630 673 hold=10; next
pascal@20543 674 }
pascal@20543 675 line[kept++]=$0
pascal@20543 676 hold=1
pascal@20458 677 next
pascal@20458 678 }
pascal@20520 679 if (/^ pop [ds]i/ && regs[2] ~ /^[ds]i$/) {
pascal@20520 680 print " xchg " r
pascal@20520 681 }
pascal@20543 682 else print s
pascal@20543 683 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20458 684 }
pascal@20458 685 else if (hold == 2) {
pascal@21729 686 split($0,args,",")
pascal@21729 687 if (/^ mov / && r == args[2]) { print s; s=$0; next }
pascal@21729 688 split($2,args,",")
pascal@21729 689 hold=0; print s
pascal@20458 690 if ($1 == "or" && r == args[1] && r == args[2]) next # don't clear C ...
pascal@20458 691 }
pascal@20458 692 else if (hold == 3) {
pascal@20458 693 hold=0
pascal@21576 694 if (/^ call / && regs[2] == "ax") s=" xchg ax," regs[1]
pascal@20542 695 if (/^ add [abcds][ix],/) {
pascal@20458 696 split($2,regs2,",")
pascal@20458 697 if (regs[1] == regs2[1] && (regs2[2] == "offset" || isnum(regs2[2]))) {
pascal@20549 698 t=$0; sub(/mov/,$1,s); sub(/add/,"mov",t)
pascal@20458 699 print t; print s; next
pascal@20458 700 }
pascal@20458 701 }
pascal@20458 702 print s
pascal@20458 703 }
pascal@20458 704 else if (hold == 4) {
pascal@20458 705 hold=0
pascal@20458 706 if (/^ push eax$/) {
pascal@20458 707 print " push 0"; print " push ax"; next
pascal@20458 708 } else { print s }
pascal@20458 709 }
pascal@20543 710 else if (hold == 5) {
pascal@20543 711 hold=0
pascal@20543 712 if ($1 == "jae" || $1 == "jb") {
pascal@20544 713 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 714 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20543 715 s = s "/256"
pascal@20543 716 }
pascal@20543 717 print s
pascal@20543 718 }
pascal@20630 719 else if (hold == 6) {
pascal@20630 720 if (($1 == "and" || $1 == "add") && $2 ~ /^ax,/) {
pascal@20630 721 line[kept++]=$0
pascal@20630 722 next
pascal@20630 723 }
pascal@20630 724 p=$0
pascal@20630 725 if (/^ movzx eax,ax$/) {
pascal@20630 726 s=" mov eax,cs"; p=""
pascal@20630 727 }
pascal@20630 728 print s
pascal@20630 729 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20630 730 if (p != "") print p
pascal@20630 731 hold=0; next
pascal@20630 732 }
pascal@20630 733 else if (hold == 7) {
pascal@20458 734 hold=0
pascal@20520 735 if (/^ call near ptr N_LXURSH@$/) {
pascal@20520 736 print " extrn N_LXURSH@4:near"
pascal@20520 737 print " call near ptr N_LXURSH@4"
pascal@20520 738 next
pascal@20520 739 }
pascal@20528 740 if (/^ call near ptr N_LXLSH@$/) {
pascal@20528 741 print " extrn N_LXLSH@4:near"
pascal@20528 742 print " call near ptr N_LXLSH@4"
pascal@20528 743 next
pascal@20528 744 }
pascal@20520 745 print s
pascal@20458 746 }
pascal@20630 747 else if (hold == 8) {
pascal@20630 748 if ($1 == "je" || $1 == "jne") { p=$0; hold=9; next }
pascal@20630 749 hold=0
pascal@20630 750 print s
pascal@20630 751 }
pascal@20630 752 else if (hold == 9) {
pascal@20630 753 hold=0; split($2,args,",")
pascal@20630 754 if (/^ mov ax,/ && args[2] == regs[1]) {
pascal@20630 755 print; print " or ax,ax"; print p; next
pascal@20630 756 }
pascal@20630 757 print s; print p;
pascal@20630 758 }
pascal@20630 759 else if (hold == 10) {
pascal@20751 760 split($2,args,","); op=""
pascal@20751 761 if ($1 == "add") op="+"
pascal@20751 762 if ($1 == "sub") op="-"
pascal@20751 763 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 764 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20751 765 if (op != "" && isnum(args[2])) {
pascal@20751 766 split(line[0],reg,",")
pascal@20751 767 if (substr(reg[1],length(reg[1])-1,2) == args[1]) {
pascal@20751 768 line[0] = substr(line[0],1,length(line[0])-1) op args[2] "]"
pascal@20751 769 next
pascal@20751 770 }
pascal@20751 771 }
pascal@20630 772 hold=0
pascal@20630 773 if (/^ mov [sd]i,ax$/) {
pascal@20630 774 split($2,args,",")
pascal@20630 775 for (i = 0; i < kept; i++) {
pascal@20630 776 sub(/ax/,args[1],line[i]); print line[i]
pascal@20630 777 }
pascal@20630 778 next
pascal@20630 779 }
pascal@20630 780 for (i = 0; i < kept; i++) print line[i]
pascal@20630 781 }
pascal@20634 782 else if (hold == 11) {
pascal@20634 783 if (/^ inc ax$/ || /^ dec ax$/) {
pascal@20634 784 line[kept++]=$0; next
pascal@20634 785 }
pascal@20634 786 split($2,args,",")
pascal@20634 787 if (/^ mov cl,/) {
pascal@20634 788 split($2,args,",")
pascal@20634 789 if (args[2] >= 8) {
pascal@20634 790 line[kept++]=$0; next
pascal@20634 791 }
pascal@20634 792 }
pascal@20634 793 if (!/^ shl ax,/ || (args[2] != "cl" && args[2] < 8)) {
pascal@20634 794 print " cbw "
pascal@20634 795 }
pascal@20634 796 for (i = 0; i < kept; i++) print line[i]
pascal@20634 797 hold=kept=0
pascal@20634 798 }
pascal@20634 799 else if (hold == 12) {
pascal@20634 800 hold=0
pascal@20634 801 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 802 print " inc " regs[1]
pascal@20634 803 print " inc " regs[1]
pascal@20634 804 }
pascal@20634 805 else print " add " regs[1] ",2"
pascal@20634 806 }
pascal@20634 807 else if (hold == 13) {
pascal@20634 808 hold=0
pascal@20634 809 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 810 print " dec " regs[1]
pascal@20634 811 print " dec " regs[1]
pascal@20634 812 }
pascal@20634 813 else print " sub " regs[1] ",2"
pascal@20634 814 }
pascal@21569 815 else if (hold == 14) {
pascal@21569 816 if (/^ push ax$/) { hold++; next; }
pascal@21569 817 print " push dx";
pascal@21569 818 hold=0;
pascal@21569 819 }
pascal@21569 820 else if (hold == 15) {
pascal@21569 821 if (/^ pop eax$/) { hold++; next; }
pascal@21569 822 print " push dx";
pascal@21569 823 print " push ax";
pascal@21569 824 hold=0;
pascal@21569 825 }
pascal@21569 826 else if (hold == 16) {
pascal@21569 827 hold=0;
pascal@21569 828 if (/^ shr eax,16$/) { print " xchg ax,dx"; next; }
pascal@21569 829 print " push dx";
pascal@21569 830 print " push ax";
pascal@21569 831 print " pop eax";
pascal@21569 832 }
pascal@21569 833 else if (hold == 17) {
pascal@21569 834 hold=0;
pascal@21569 835 if (/^ cmp ax,-1$/) { print " inc ax"; next; }
pascal@21569 836 }
pascal@21576 837 if (/^ call near ptr @fileexist\$/ || # return boolean :
pascal@21576 838 /^ call near ptr @isoreaddir\$/ || # 0=true, -1=false
pascal@21628 839 /^ call near ptr @isoreset\$/ ||
pascal@21628 840 /^ call near ptr @isoopen\$/ ||
pascal@21628 841 /^ call near ptr @isoreadsector\$/ ||
pascal@21628 842 /^ call near ptr @strhead\$/ ||
pascal@23984 843 /^ call near ptr @strcmp\$/ ||
pascal@21576 844 /^ call near ptr @argstr\$/ ||
pascal@21576 845 /^ call near ptr @argnum\$/) { print; hold=17; next; }
pascal@20458 846 s=$0
pascal@20458 847 # These optimisation may break ZF or CF
pascal@20485 848 if (/^ sub sp,2$/) { print " push ax"; next }
pascal@20485 849 if (/^ sub sp,4$/) { print " push ax"; print " push ax"; next }
pascal@20485 850 if (/^ add sp,4$/) { print " pop cx"; print " pop cx"; next }
pascal@20458 851 if (/^ mov d*word ptr .*,0$/ || /^ mov dword ptr .*,large 0$/) {
pascal@20458 852 sub(/mov/,"and",s); print s; next # slower
pascal@20458 853 }
pascal@20458 854 if (/^ mov d*word ptr .*,-1$/ || /^ mov dword ptr .*,large -1$/) {
pascal@20458 855 sub(/mov/,"or",s); print s; next # slower
pascal@20458 856 }
pascal@20458 857 if (/^ or .*,0$/ || /^ and .*,-1$/) next
pascal@20458 858 if (/^ or [abcd]x,/) {
pascal@20458 859 split($2,args,",")
pascal@20458 860 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 861 print " or " substr(args[1],1,1) "l," args[2]; next
pascal@20458 862 }
pascal@20458 863 }
pascal@20458 864 if (/^ and [abcd]x,/) {
pascal@20458 865 split($2,args,",")
pascal@20459 866 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 867 print " and " substr(args[1],1,1) "l," args[2]; next
pascal@20458 868 }
pascal@20458 869 }
pascal@20458 870 if (/^ or e[abcd]x,/) {
pascal@20458 871 split($2,args,",")
pascal@20458 872 if (args[2] == "large") { args[2] = $3 }
pascal@20458 873 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 874 print " or " substr(args[1],2,1) "l," args[2]; next
pascal@20458 875 }
pascal@20458 876 }
pascal@20458 877 if (/^ and e[abcd]x,/) {
pascal@20458 878 split($2,args,",")
pascal@20458 879 if (args[2] == "large") { args[2] = $3 }
pascal@20459 880 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 881 print " and " substr(args[1],2,1) "l," args[2]; next
pascal@20458 882 }
pascal@20458 883 }
pascal@20458 884 if (/^ or e[abcds][ix],/) {
pascal@20458 885 split($2,args,",")
pascal@20458 886 if (args[2] == "large") { args[2] = $3 }
pascal@20458 887 if (isnum(args[2]) && args[2] >= 0 && args[2] < 65536) {
pascal@20458 888 print " or " substr(args[1],2) "," args[2]; next
pascal@20458 889 }
pascal@20458 890 }
pascal@20458 891 if (/^ and e[abcds][ix],/) {
pascal@20458 892 split($2,args,",")
pascal@20458 893 if (args[2] == "large") { args[2] = $3 }
pascal@20459 894 if (isnum(args[2]) && args[2] >= -65536 && args[2] < 0) {
pascal@20458 895 print " and " substr(args[1],2) "," args[2]; next
pascal@20458 896 }
pascal@20458 897 }
pascal@20543 898 if (/^ add word ptr/ || /^ sub word ptr/ ||
pascal@20544 899 /^ add [bcd]x,/ || /^ sub [bcd]x,/) {
pascal@20542 900 split($0,args,",")
pascal@20542 901 if (isnum(args[2]) && (args[2] % 256 == 0)) {
pascal@20544 902 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 903 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20542 904 print s "/256"; next
pascal@20542 905 }
pascal@20542 906 }
pascal@20546 907 if (/^ add dword ptr/ || /^ sub dword ptr/) {
pascal@20458 908 split($0,args,",")
pascal@20543 909 if (args[2] == "large") { args[2] = $3 }
pascal@20458 910 if (isnum(args[2])) {
pascal@20546 911 if (args[2] % 16777216 == 0) {
pascal@20546 912 sub(/dword/,"byte",s)
pascal@20543 913 sub(/\],/,"+3],",s) || sub(/,/,"+3,",s)
pascal@20458 914 print s "/16777216"; next
pascal@20458 915 }
pascal@20458 916 if (args[2] % 65536 == 0) {
pascal@20546 917 sub(/dword/,"word",s)
pascal@20543 918 sub(/\],/,"+2],",s) || sub(/,/,"+2,",s)
pascal@20458 919 print s "/65536"; next
pascal@20458 920 }
pascal@20458 921 }
pascal@20458 922 }
pascal@20458 923 if (/^ mov e.x,/) {
pascal@20458 924 split($2,args,",")
pascal@20458 925 r=args[1]
pascal@20458 926 if (args[2] == "large") { args[2] = $3 }
pascal@20458 927 if (isnum(args[2]) && args[2] % 65536 == args[2]) {
pascal@20458 928 if (args[2] % 256 == args[2] || args[2] % 256 == 0) {
pascal@20458 929 print " xor " r "," r
pascal@20458 930 if (args[2] == 0) next
pascal@20458 931 x=" mov " substr(r,2,1)
pascal@20458 932 if (args[2] % 256 == 0) {
pascal@20458 933 print x "h," args[2] "/256"
pascal@20458 934 }
pascal@20458 935 else { print x "l," args[2] }
pascal@20458 936 next
pascal@20458 937 }
pascal@20458 938 }
pascal@20458 939 }
pascal@21576 940 if (afterjmp) print ";" $0
pascal@21576 941 else print
pascal@24022 942 if (/^ jmp / || /boot_kernel\(\);/ ||
pascal@23992 943 /^ call near ptr @die\$qpxzc/ ||
pascal@23992 944 /^ call near ptr @exit\$qv/) afterjmp=1
pascal@20458 945 }