wok-current annotate linld/stuff/src/pipehole.awk @ rev 24019

syslinux: fix build
author Pascal Bellard <pascal.bellard@slitaz.org>
date Sun Feb 28 16:32:57 2021 +0000 (2021-02-28)
parents 14ca5e18cfd9
children 42b4b9d947f3
rev   line source
pascal@24019 1 BEGIN { hold=0; is386=0; isload=0; isiso=0; istazboot=0; wascall=0; ishimem=0; label="none"; xlabel=""; file=""; retc="returnCz:\n" }
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@21984 10 if (/debug S/) print " %PAGESIZE 1000"
pascal@21984 11 if (file == "linld.cpp") {
pascal@24013 12 if (/\[si/ || /si,/ || /,si/) sub(/si/,"di")
pascal@24013 13 else if (/\[di/ || /di,/ || /,di/) sub(/di/,"si")
pascal@21984 14 if (/add di,2/) $0=" scasw ; " $0
pascal@24013 15 if (/bx,di/ || /\[bp-2\]/) next
pascal@24013 16 sub(/\[bx\],0/,"[di],0")
pascal@21984 17 if (islinld==1) {
pascal@24013 18 if (/,word.*/) islinld=0
pascal@21984 19 print "; " $0
pascal@24013 20 next
pascal@21984 21 }
pascal@21984 22 if (/^_main proc/) islinld=1
pascal@21984 23 if (/image\|initrd/) islinld=3
pascal@24013 24 if (islinld==3 && /bx,word ptr/) { print "; " $0; next }
pascal@21984 25 if (/fileexist\$qpxzc/) islinld=4
pascal@21984 26 if (islinld==4) {
pascal@23993 27 if (/ax,-1/) {
pascal@23993 28 print " inc ax"
pascal@24013 29 print " mov ax,word ptr [di]"
pascal@23993 30 next
pascal@23993 31 }
pascal@23993 32 if (/ax,word ptr/) next
pascal@21984 33 }
pascal@23992 34 if (/buf_cmdline\+1/) {
pascal@23992 35 islinld=5
pascal@23996 36 print " mov bx,offset DGROUP:_buf_cmdline+1"
pascal@23996 37 sub(/offset DGROUP:_buf_cmdline\+1/,"bx")
pascal@23992 38 }
pascal@23804 39 if (islinld==5) {
pascal@23996 40 if (/bx,offset DGROUP:_buf_cmdline/) $0=" dec bx"
pascal@23993 41 if (/ax,word ptr/) next
pascal@23992 42 if (/call/) islinld=0
pascal@23804 43 }
pascal@23996 44 if (/bx,word ptr DGROUP:_cmdstr\+6/) next
pascal@23996 45 if (/_cmdstr\+6,0/) {
pascal@24013 46 print " mov bx,word ptr [si+6]"
pascal@23996 47 $0=" or bx,bx"
pascal@23996 48 }
pascal@21984 49 } # file == "linld.cpp"
pascal@21791 50 if (file == "himem.cpp") {
pascal@24019 51 if (/sp,bp/ || /pop bp/ || /enter/ || /leave/) next
pascal@21984 52 if (/void load_image/) ishimem=1
pascal@21791 53 if (ishimem == 1 && is386 == 0) {
pascal@21791 54 if (/si\+8\]$/ || /si\+4\]$/ || /si\+16\]$/) next
pascal@21791 55 if (/si\+6\]$/ || /si\+2\]$/ || /si\+14\]$/) sub(/mov dx,/,"les dx,d")
pascal@24013 56 if (/si\+12\],ax/ || /si\+16\],ax/ || /di\+2\],ax/ || /DGROUP:_himem_buf\+2,ax/) sub(/,ax/,",es")
pascal@23996 57 if (/dx,dword ptr \[si\+14\]/ || /DGROUP:_himem_buf,dx/) sub(/dx/,"ax")
pascal@21984 58 }
pascal@21984 59 if (ishimem == 1) {
pascal@21984 60 if (/do \{/) ishimem=2
pascal@23991 61 if (/bx,si/ || /push bp/ || /bp,sp/ || /push di/ || /push si/) next
pascal@23996 62 if (/sp,2/ || /bp\+4/) next
pascal@21984 63 }
pascal@21984 64 if (ishimem == 2) {
pascal@21984 65 if (/movzx/) print " cwde"
pascal@23996 66 if (/bp-2/ || /di,ax/ || /bx,di/ || /bx,si/) next
pascal@21984 67 if (/storepage.bufv/) {
pascal@21984 68 print " inc ax"
pascal@21984 69 print " push ax"
pascal@21984 70 }
pascal@21984 71 if (/buf \+= size;/) {
pascal@21984 72 print " pop ax"
pascal@21984 73 }
pascal@23996 74 if (/i\+12/) ishimem=20
pascal@23996 75 }
pascal@23996 76 if (ishimem == 20) {
pascal@24013 77 if (/loadfail/) next
pascal@23996 78 if (/je/) {
pascal@23996 79 print " extrn jmploadfailure"
pascal@23996 80 $0=" jne short jmploadfailure"
pascal@23996 81 }
pascal@23989 82 if (/endp/) ishimem=0
pascal@21791 83 }
pascal@23992 84 if (/@memcpy_image\$qp11image_himem/) next
pascal@24013 85 if (/far last_ditch/) ishimem=3
pascal@23992 86 if (ishimem == 3) {
pascal@23996 87 sub(/DGROUP:_imgs\+4,/,"[si+4],")
pascal@24013 88 if (/bx,di/ || /di,ax/) next
pascal@23992 89 }
pascal@21791 90 } # file == "himem.cpp"
pascal@21791 91 if (file == "load.cpp") {
pascal@23996 92 if (isload != 3 && isload != 6) { # LOAD.LST
pascal@23996 93 if (/,si/ || /si,/ || /\[si/) sub(/si/,"di")
pascal@23996 94 else if (/,di/ || /di,/ || /\[di/) sub(/di/,"si")
pascal@23996 95 }
pascal@23996 96 if (/moverm\(/) isload=16
pascal@23996 97 if (isload != 16 && /bx,si/) next
pascal@23996 98 if (/@moverm/) isload=0
pascal@23992 99 if (/readrm\(m, 0x200/) isload=15
pascal@23992 100 if (isload == 15) { # LOAD.LST
pascal@23996 101 if (/bx,si/) next
pascal@23992 102 if (/call/) isload=0
pascal@23992 103 }
pascal@23989 104 if (/load_image\(/) {
pascal@23989 105 if (isload == 3) isload=13
pascal@23989 106 else isload=14
pascal@23989 107 }
pascal@23989 108 if (isload == 14) { # LOAD.LST
pascal@23996 109 if (/call/) $0=" jmp short load_imagez"
pascal@23989 110 if (/ret/) isload=0
pascal@23989 111 if (/pop/ || /ret/ || /push/) next
pascal@23989 112 }
pascal@23989 113 if (isload == 13) { # LOAD.LST
pascal@23991 114 if (/pop/) isload=3
pascal@23991 115 if (/push/ || /call/ || /pop/) next
pascal@23989 116 }
pascal@22152 117 if (/i\+21\],513$/) isload=11
pascal@21984 118 if (isload == 12) { # LOAD.LST
pascal@21984 119 if (/cmp/) next
pascal@21984 120 if (/jb/) isload=0
pascal@21984 121 sub(/jb/,"jcxz")
pascal@21984 122 }
pascal@21984 123 if (isload == 11) { # LOAD.LST
pascal@21984 124 if (/cmp/) {
pascal@21984 125 print " mov cx,513"
pascal@22152 126 sub(/cmp /,"sub cx,")
pascal@22152 127 sub(/,513/,"")
pascal@21984 128 }
pascal@21984 129 if (/jb/) isload=12
pascal@21984 130 sub(/jb/,"ja")
pascal@21984 131 }
pascal@22170 132 sub(/_imgs\+65534/,"_imgs-2")
pascal@21791 133 if (/setup_sects == 0/) isload=9
pascal@21791 134 if (isload == 9) { # LOAD.LST
pascal@23999 135 sub(/,0/,",al ; worst case 2k boundary (iso)")
pascal@21791 136 if (/jne/) isload=0
pascal@21791 137 }
pascal@21757 138 if (/cmd_line_ptr =/ && is386 == 0) isload=7
pascal@21757 139 if (isload == 7) { # LOAD.LST
pascal@22181 140 if (/add/ || /xor/ || /extrn/ || /N_LXLSH@/ || /cl,4/ || /,ax/) next
pascal@22170 141 if (/enable A20 if needed/) { print nextinst; isload=0 }
pascal@22152 142 if (/i-463/) $0=" mov bx,-463"
pascal@22170 143 if (/i-465/) {
pascal@22170 144 sub(/465/,"2"); sub(/\[/,"[bx+")
pascal@22170 145 nextinst=$0; sub(/-2\],-23745/,"],8000h",nextinst)
pascal@22170 146 }
pascal@21757 147 if (/,dx/) {
pascal@21757 148 print " mov cl,12"
pascal@21757 149 print " shr ax,cl"
pascal@22181 150 print " mov bx,55"
pascal@21757 151 sub(/dx/,"ax")
pascal@21757 152 }
pascal@21757 153 }
pascal@23992 154 if (/pm_low == 0/) {
pascal@23991 155 print " push di"
pascal@23996 156 print " push si"
pascal@23991 157 isload=6
pascal@23991 158 }
pascal@21757 159 if (isload == 6) { # LOAD.LST
pascal@23991 160 if (/si\+2/) {
pascal@23991 161 print " cmpsw"
pascal@23991 162 next
pascal@23991 163 }
pascal@23989 164 if (/les/) sub(/bx,/,"di,")
pascal@23991 165 if (/bx\+4/ || /es:/ || /call/ || /pop/ || /ret/) next
pascal@23989 166 if (/si\+6/) {
pascal@23989 167 print " movsw"
pascal@23989 168 print " movsw"
pascal@23989 169 print " movsw"
pascal@23989 170 print " movsw"
pascal@23996 171 print " pop si"
pascal@23991 172 print "load_imagez:"
pascal@21757 173 next
pascal@21757 174 }
pascal@21757 175 }
pascal@21757 176 if (isload == 5) { # LOAD.LST
pascal@21757 177 sub(/ax,/,"bx,")
pascal@23996 178 if (/@puts\$qpxzc/) isload=0
pascal@21757 179 if (/mov bx,ax/) next
pascal@23996 180 sub(/,word ptr \[di\+29\]/,",cx")
pascal@21757 181 }
pascal@23996 182 if (/_cmdnum\+14/ && is386 == 0) isload=4
pascal@22180 183 if (isload == 4) { # LOAD.LST
pascal@23996 184 if (/_cmdnum\+14/) next
pascal@23996 185 if (/_cmdnum\+12$/) {
pascal@23996 186 $0=" les dx,dword ptr [bx+12]"
pascal@21757 187 }
pascal@21791 188 sub(/,ax/,",es")
pascal@22181 189 if (/add ax,word ptr/) $0=" add ax,cx"
pascal@22181 190 if (/i\+29\],0/) {
pascal@22181 191 sub(/,0$/,"")
pascal@22181 192 sub(/cmp /,"mov cx,")
pascal@22181 193 }
pascal@22181 194 sub(/je/,"jcxz")
pascal@23996 195 if (/@strcpy/) isload=0
pascal@23992 196 if (/\+0x200/) isload=5
pascal@21757 197 }
pascal@23996 198 if (/void load_initrd\(\)/) { isload=3; isload2=0 }
pascal@21754 199 if (isload == 3) { # LOAD.LST
pascal@24015 200 if (/bx,offset DGROUP:_imgs\+28/ || /push si/) next
pascal@24015 201 if (/si,offset DGROUP:_imgs\+28/) print " push si"
pascal@23996 202 if (/cmdstr\+4,0/) {
pascal@23996 203 isload2++
pascal@23996 204 print " mov ax,word ptr DGROUP:_cmdstr+4"
pascal@23996 205 $0=" or ax,ax"
pascal@23996 206 }
pascal@23996 207 if (isload2 && /DGROUP:_cmdstr\+4/) $0=";" $0
pascal@23994 208 if (/je short @2@.*/) sub(/@2@.*/,"load_initrd_ret")
pascal@23992 209 if (/mov ax,word ptr \[si\]/) $0=" lodsw"
pascal@23991 210 if( /jmp/) {
pascal@23991 211 print "load_initrd_ret:"
pascal@23991 212 print " ret"
pascal@23991 213 next
pascal@23991 214 }
pascal@23996 215 if (/@loadfailure/) {
pascal@23996 216 print " global jmploadfailure:near"
pascal@23996 217 print "jmploadfailure:"
pascal@23996 218 }
pascal@21754 219 sub(/\[di/,"[bx")
pascal@23992 220 sub(/di,/,"bx,")
pascal@21754 221 }
pascal@23996 222 if (/mode = vid_mode/) { isload=2; print " mov bx,offset _cmdnum" }
pascal@21750 223 if (isload == 2) { # LOAD.LST
pascal@23996 224 if (/DGROUP:_cmdnum/) { sub(/DGROUP:_cmdnum/,"[bx"); $0=$0 "]"}
pascal@21750 225 sub(/,0/,""); sub(/cmp /,"mov cx,")
pascal@21750 226 sub(/je/,"jcxz")
pascal@21750 227 if (/ax,word/) next
pascal@21750 228 sub(/,ax/,",cx")
pascal@23992 229 if (/starting linux 1\.3\.73/) isload=0
pascal@21750 230 }
pascal@23996 231 if (/_rm_size=0x200/ || /heap_top = _rm_buf/) isload=1
pascal@21750 232 if (isload == 1) { # LOAD.LST
pascal@21791 233 if (/ptr .die\$qpxzc/) $0="@die@:\n" $0
pascal@21729 234 if (/mov al,byte ptr/ && is386) {
pascal@22152 235 sub(/mov al/,"movzx eax")
pascal@21729 236 }
pascal@21791 237 if (is386 == 0) {
pascal@23999 238 if (/m->size -= _rm_size/) print " cwd ; do not trust rewind result (iso case)"
pascal@21791 239 sub(/,0$/,",dx")
pascal@21791 240 }
pascal@21729 241 if (/ax,word ptr/) next
pascal@21729 242 if (/^ call/) isload=0
pascal@21729 243 }
pascal@21791 244 } # file == "load.cpp"
pascal@21791 245 if (file == "iso9660.cpp") {
pascal@24019 246 if (/ptr \[si\+8\],/) { si="si"; di="di" }
pascal@24019 247 if (/ptr \[di\+8\],/) { si="di"; di="si" }
pascal@24019 248 if (/leave/ || /enter/) next
pascal@24019 249 if (/ptr \[.i\+10\],dx/) next
pascal@24019 250 if (/ptr \[.i\+8\],ax/) next
pascal@24019 251 if (/ptr \[.i\+8\],eax/) next
pascal@24019 252 if (/cx,word ptr \[.i\+32\]/) next
pascal@24019 253 if (/add word ptr \[.i\],ax/) sub(/ax/,"cx")
pascal@23996 254 if (/ax,word ptr \[si\+24\]/) sub(/mov ax,/,"les ax,d")
pascal@23996 255 if (/ax,word ptr \[si\+26\]/) next
pascal@23996 256 if (/word ptr \[si\+29\],ax/) sub(/ax/,"es")
pascal@23996 257 if (/\[si\],-1/) $0=" not word ptr [si]"
pascal@23996 258 sub(/di,word ptr DGROUP:_isostate\+2/,"di,word ptr [si+2]")
pascal@24019 259 if (/s = p \+ 1;/ && !/ ;/) isiso=20
pascal@24019 260 if (isiso == 20) { # ISO9660.LST
pascal@24019 261 if (/al,byte ptr/) $0=" ;inc ax"
pascal@24019 262 sub(/\[si-1\]/,"[si]")
pascal@24019 263 if (/p != .\./) print " inc " di " ; see ;inc ax"
pascal@24019 264 if (/i],0/) sub(/,0/,",ah")
pascal@24019 265 if (/filename = s;/) {
pascal@24019 266 print " stc"
pascal@24019 267 isiso=0
pascal@24019 268 }
pascal@24019 269 }
pascal@23996 270 if (isiso == 19) { # ISO9660.LST
pascal@23996 271 if (/short @2@282/) $0=" jc restoreC"
pascal@23996 272 if (/bp-2/ || /si\+34/ || /ax,dx/ || /cmp ax,-1/) next
pascal@23996 273 sub(/dx,/,"bx,")
pascal@23996 274 if (/short @2@282/) sub(/je/,"jnc")
pascal@23996 275 if (/\[si\+37\],0/) sub(/,0/,",ch")
pascal@23996 276 if (/@strcmp\$qpxzct1/) {
pascal@23996 277 print
pascal@23996 278 print "restoreC:"
pascal@23996 279 $0=" mov byte ptr [di],cl ; c"
pascal@23996 280 isiso=1
pascal@23996 281 }
pascal@23996 282 }
pascal@23996 283 if (/ax,-8/) { isiso=18; next }
pascal@23996 284 if (isiso == 18) { # ISO9660.LST
pascal@23996 285 if (/ax,ax/) { isiso=0;next }
pascal@23996 286 sub(/mov/,"sub")
pascal@23996 287 sub(/,ax/,",8")
pascal@23996 288 }
pascal@23996 289 if (isiso == 17) { # ISO9660.LST
pascal@23996 290 if (/inc di/) $0="; " $0
pascal@23996 291 if (/_isostate\+205/) {
pascal@23996 292 print
pascal@23996 293 $0=" jmp setdirofsnsz"
pascal@23996 294 }
pascal@23996 295 else sub(/ax/,"bx")
pascal@23996 296 if (/si\+24/) isiso=0
pascal@23996 297 if (/,bx/) next
pascal@23996 298 if (/isoreadrootsector/) {
pascal@23996 299 print
pascal@23999 300 print " xor word ptr [si+39],17475 ; clear C"
pascal@23999 301 $0=" jne returnNotC"
pascal@23996 302 }
pascal@23996 303 }
pascal@23996 304 if (/cpytodirpage.x->dirpage/) isiso=16
pascal@23996 305 if (isiso == 16) { # ISO9660.LST
pascal@23996 306 if (/filesize2dirsize/) {
pascal@23996 307 print " mov bx,word ptr [si+9]"
pascal@23996 308 print " mov ax,word ptr [si+13]"
pascal@23996 309 print "setdirofsnsz:"
pascal@23996 310 print " mov word ptr [si+26],bx"
pascal@23996 311 }
pascal@23996 312 if (/ax,/ || /si\+13/ || /si\+26/) next
pascal@23996 313 if (/si\+24/) isiso=1
pascal@23996 314 }
pascal@23996 315 if (/found:/) isiso=15
pascal@23996 316 if (isiso != 15 && /si,offset DGROUP:_isostate/) $0=";" $0
pascal@23996 317 if (isiso == 15) { # ISO9660.LST
pascal@23996 318 if (/xor/) {
pascal@23996 319 print "returnNotC:"
pascal@23996 320 print " cmc"
pascal@24019 321 print retc "returnC:"
pascal@23996 322 print " sbb ax,ax"
pascal@23996 323 print "return:"
pascal@23996 324 next
pascal@23996 325 }
pascal@23996 326 if (/@1@422:/ || /bp$/ || /bp,sp/ || /sp,2/) next
pascal@23996 327 if (/\[di\],47/) isiso=17
pascal@23996 328 }
pascal@23996 329 if (/short @1@142/) { isiso=14; next }
pascal@23989 330 if (isiso == 14) { # ISO9660.LST
pascal@23996 331 if (/ax,-1/) next
pascal@24019 332 if (/jmp/) $0=" jb returnCz"
pascal@23989 333 }
pascal@23988 334 if (/p = x->buffer \+ 34/) isiso=13
pascal@23988 335 if (isiso == 13) { # ISO9660.LST
pascal@24019 336 if (/i,.i/) $0=" xchg ax,bx"
pascal@24019 337 if (/i,ax/) $0=" lea " di ",[bx+" si "+72]"
pascal@24019 338 if (/i,72/ || /word ptr \[.i\+32\]/) next
pascal@24019 339 if (/register len/) isiso=12
pascal@23988 340 }
pascal@23870 341 if (isiso == 12) { # ISO9660.LST
pascal@24019 342 if (/.i\+2/) sub(/al/,"bl")
pascal@23996 343 if (/cbw/) next
pascal@23996 344 sub(/dx,ax/,"bh,0")
pascal@23870 345 if (/bx,dx/) next
pascal@23870 346 sub(/i,dx/,"i,bx")
pascal@24019 347 if (/bx\+.i\],0/) sub(/,0/,",bh")
pascal@24019 348 if (/jmp/) {
pascal@24019 349 $0=retc " jmp returnC"
pascal@24019 350 retc=""
pascal@24019 351 }
pascal@23870 352 if (/while/) isiso=0
pascal@23870 353 }
pascal@23863 354 if (/curpos >= SECT/) isiso=10
pascal@23863 355 if (isiso == 10) { # ISO9660.LST
pascal@23863 356 if (/cmp/) {
pascal@23863 357 sub(/cmp /,"mov bx,")
pascal@23863 358 sub(/i.*/,"i]")
pascal@23863 359 print
pascal@23863 360 $0=" cmp bh,2048/256"
pascal@23863 361 }
pascal@23863 362 if (/mov/) {
pascal@23863 363 isiso=0
pascal@23863 364 next
pascal@23863 365 }
pascal@23863 366 }
pascal@21791 367 if (/<< SECTORBITS/) isiso=9
pascal@21791 368 if (isiso == 9) { # ISO9660.LST
pascal@23996 369 if (/dx,/) next
pascal@21791 370 sub(/mov ax,/,"les ax,d")
pascal@21791 371 if (/^ call/) {
pascal@21791 372 print " extrn N_LXLSH@ES:near"
pascal@21791 373 sub(/N_LXLSH@/,"N_LXLSH@ES")
pascal@21791 374 isiso=0
pascal@21791 375 }
pascal@21791 376 }
pascal@21791 377 if (/filesize =/) isiso=8
pascal@21791 378 if (isiso == 8) { # ISO9660.LST
pascal@21791 379 if (/ax,/) next
pascal@21791 380 sub(/mov dx,/,"les dx,d")
pascal@21791 381 sub(/,ax/,",es")
pascal@21791 382 if (/filemod/) isiso=0
pascal@21791 383 }
pascal@21754 384 if (/entrysize =/) isiso=5
pascal@21754 385 if (isiso == 5) { # ISO9660.LST
pascal@21754 386 if (/ax,ax/) next
pascal@24019 387 if (/word ptr \[.i\+32\],ax/) next
pascal@21754 388 sub(/ax/,"cx")
pascal@21754 389 sub(/je/,"jcxz")
pascal@23996 390 if (/jcxz/) {
pascal@23996 391 hold=0
pascal@23996 392 print s
pascal@24019 393 sub(/@1@114/,"returnNotC")
pascal@23996 394 print
pascal@24019 395 if (is386) $0=" mov dword ptr [" si "+8],eax"
pascal@24019 396 else {
pascal@24019 397 print " mov word ptr [" si "+10],dx"
pascal@24019 398 $0=" mov word ptr [" si "+8],ax"
pascal@24019 399 }
pascal@23996 400 }
pascal@21754 401 if (/return/) isiso=0
pascal@21754 402 }
pascal@21754 403 if (/do s\+\+; while/) isiso=3
pascal@23996 404 if (isiso == 3) { # ISO9660.LST
pascal@21754 405 sub(/cmp byte ptr \[.i\]/,"sub al")
pascal@21754 406 if (/inc /) { r=$2; print; next }
pascal@21754 407 if (/al,0/) print " mov al,[" r "]"
pascal@23996 408 if (/al,byte ptr/) next
pascal@21754 409 if (/byte ptr \[.*\],0/) next
pascal@23996 410 }
pascal@23996 411 if (/ptr .isoreaddir/) isiso=1
pascal@23996 412 if (isiso == 1) { # ISO9660.LST
pascal@23996 413 if (/n = name;/) {
pascal@23996 414 isiso=19
pascal@23996 415 print " xchg ax,cx"
pascal@23996 416 print " xchg cl,byte ptr [di] ; c"
pascal@21791 417 }
pascal@23996 418 if (/short @2@366/) sub(/jne/,"jnc")
pascal@23996 419 if (/short @2@282/) sub(/je/,"jc")
pascal@23996 420 if (/short @2@562/) sub(/@2@562/,"returnNotC")
pascal@23996 421 if (/short @2@534/) { print; $0=" inc cx" }
pascal@23996 422 if (/ax,word ptr \[si\+4\]/) $0=" xchg ax,bx ; " $0
pascal@23996 423 if (/\[di\],al/) next
pascal@23996 424 if (/@2@310/) next
pascal@23996 425 if (/ax,-1/) next
pascal@23996 426 if (/inc di/ || /@@0/) next
pascal@23996 427 if (/@2@142$/) { print " inc di"; sub(/jmp/,"loop") }
pascal@21735 428 }
pascal@23996 429 if (/i\+36\]/) next
pascal@23999 430 sub(/di,offset DGROUP:_isostate/,"di,si")
pascal@21791 431 } # file == "iso9660.cpp"
pascal@21729 432 if (wascall) {
pascal@21729 433 if (rcall != "") {
pascal@21729 434 if (/,ax$/) print " mov " rcall ",ax"
pascal@21729 435 else print " xchg ax," rcall
pascal@21729 436 wascall=0
pascal@21729 437 }
pascal@21729 438 else if (/^ mov .i,ax$/) {
pascal@21729 439 split($2,y,",")
pascal@21729 440 rcall=y[1]
pascal@21729 441 next
pascal@21729 442 }
pascal@21729 443 else wascall=0
pascal@21729 444 }
pascal@21729 445 if (/^ call /) { wascall=1; rcall="" }
pascal@20458 446 if (hold == 0) {
pascal@20458 447 s=$0
pascal@20534 448 if (/^ mov .[ix],bx$/ || /^ mov .[ix],.i$/) {
pascal@20543 449 r=$2; kept=0
pascal@20458 450 hold=1; split($2,regs,","); next
pascal@20458 451 }
pascal@21729 452 if (/^ inc e?.[ixhl]/ || /^ dec e?.[ixhl]/) {
pascal@20458 453 hold=2; r=$2; next
pascal@20458 454 }
pascal@20458 455 if (/^ mov [abcds][ix],/ && ! /,.s/) {
pascal@20458 456 hold=3; split($2,regs,","); next
pascal@20458 457 }
pascal@20458 458 if (/^ movzx eax,ax$/) { hold=4; next }
pascal@20544 459 if (/^ cmp word ptr/ || /^ cmp [bcd]x,/) {
pascal@20543 460 split($0,regs,",")
pascal@20543 461 if (isnum(regs[2]) && regs[2] != 0 &&
pascal@20543 462 (regs[2] % 256) == 0) {
pascal@20549 463 hold=5; next
pascal@20543 464 }
pascal@20543 465 }
pascal@20630 466 if (/^ mov ax,cs$/) { hold=6; kept=0; next }
pascal@20630 467 if (/^ mov cl,4$/) { hold=7; next }
pascal@20630 468 if (/^ cmp word ptr DGROUP:.*,0$/) {
pascal@20630 469 hold=8; split($2,regs,","); next
pascal@20630 470 }
pascal@20634 471 if (/^ cbw/) { hold=11; kept=0; next }
pascal@20634 472 if (/^ add [abcds][ix],2$/) {
pascal@20634 473 split($2,regs,","); hold=12; next
pascal@20634 474 }
pascal@20634 475 if (/^ sub [abcds][ix],2$/) {
pascal@20634 476 split($2,regs,","); hold=13; next
pascal@20634 477 }
pascal@21569 478 if (/^ push dx$/) {
pascal@21569 479 hold=14; next;
pascal@21569 480 }
pascal@20458 481 }
pascal@20458 482 else if (hold == 1) {
pascal@20543 483 if (/^ ;/) { line[kept++]=$0; next }
pascal@20458 484 hold=0; split($2,args,","); op=""
pascal@20458 485 if ($1 == "add") op="+"
pascal@20458 486 if ($1 == "sub") op="-"
pascal@20751 487 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 488 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20543 489 if (op != "" && regs[1] == args[1]) {
pascal@20543 490 if (isnum(args[2])) {
pascal@20630 491 for (i = kept++; i > 0; i--) line[i] = line[i-1]
pascal@20630 492 line[0] = "\tlea\t" regs[1] ",[" regs[2] op args[2] "]"
pascal@22288 493 sub(/\+-/,"-",line[0])
pascal@20630 494 hold=10; next
pascal@20543 495 }
pascal@20543 496 line[kept++]=$0
pascal@20543 497 hold=1
pascal@20458 498 next
pascal@20458 499 }
pascal@20520 500 if (/^ pop [ds]i/ && regs[2] ~ /^[ds]i$/) {
pascal@20520 501 print " xchg " r
pascal@20520 502 }
pascal@20543 503 else print s
pascal@20543 504 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20458 505 }
pascal@20458 506 else if (hold == 2) {
pascal@21729 507 split($0,args,",")
pascal@21729 508 if (/^ mov / && r == args[2]) { print s; s=$0; next }
pascal@21729 509 split($2,args,",")
pascal@21729 510 hold=0; print s
pascal@20458 511 if ($1 == "or" && r == args[1] && r == args[2]) next # don't clear C ...
pascal@20458 512 }
pascal@20458 513 else if (hold == 3) {
pascal@20458 514 hold=0
pascal@21576 515 if (/^ call / && regs[2] == "ax") s=" xchg ax," regs[1]
pascal@20542 516 if (/^ add [abcds][ix],/) {
pascal@20458 517 split($2,regs2,",")
pascal@20458 518 if (regs[1] == regs2[1] && (regs2[2] == "offset" || isnum(regs2[2]))) {
pascal@20549 519 t=$0; sub(/mov/,$1,s); sub(/add/,"mov",t)
pascal@20458 520 print t; print s; next
pascal@20458 521 }
pascal@20458 522 }
pascal@20458 523 print s
pascal@20458 524 }
pascal@20458 525 else if (hold == 4) {
pascal@20458 526 hold=0
pascal@20458 527 if (/^ push eax$/) {
pascal@20458 528 print " push 0"; print " push ax"; next
pascal@20458 529 } else { print s }
pascal@20458 530 }
pascal@20543 531 else if (hold == 5) {
pascal@20543 532 hold=0
pascal@20543 533 if ($1 == "jae" || $1 == "jb") {
pascal@20544 534 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 535 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20543 536 s = s "/256"
pascal@20543 537 }
pascal@20543 538 print s
pascal@20543 539 }
pascal@20630 540 else if (hold == 6) {
pascal@20630 541 if (($1 == "and" || $1 == "add") && $2 ~ /^ax,/) {
pascal@20630 542 line[kept++]=$0
pascal@20630 543 next
pascal@20630 544 }
pascal@20630 545 p=$0
pascal@20630 546 if (/^ movzx eax,ax$/) {
pascal@20630 547 s=" mov eax,cs"; p=""
pascal@20630 548 }
pascal@20630 549 print s
pascal@20630 550 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20630 551 if (p != "") print p
pascal@20630 552 hold=0; next
pascal@20630 553 }
pascal@20630 554 else if (hold == 7) {
pascal@20458 555 hold=0
pascal@20520 556 if (/^ call near ptr N_LXURSH@$/) {
pascal@20520 557 print " extrn N_LXURSH@4:near"
pascal@20520 558 print " call near ptr N_LXURSH@4"
pascal@20520 559 next
pascal@20520 560 }
pascal@20528 561 if (/^ call near ptr N_LXLSH@$/) {
pascal@20528 562 print " extrn N_LXLSH@4:near"
pascal@20528 563 print " call near ptr N_LXLSH@4"
pascal@20528 564 next
pascal@20528 565 }
pascal@20520 566 print s
pascal@20458 567 }
pascal@20630 568 else if (hold == 8) {
pascal@20630 569 if ($1 == "je" || $1 == "jne") { p=$0; hold=9; next }
pascal@20630 570 hold=0
pascal@20630 571 print s
pascal@20630 572 }
pascal@20630 573 else if (hold == 9) {
pascal@20630 574 hold=0; split($2,args,",")
pascal@20630 575 if (/^ mov ax,/ && args[2] == regs[1]) {
pascal@20630 576 print; print " or ax,ax"; print p; next
pascal@20630 577 }
pascal@20630 578 print s; print p;
pascal@20630 579 }
pascal@20630 580 else if (hold == 10) {
pascal@20751 581 split($2,args,","); op=""
pascal@20751 582 if ($1 == "add") op="+"
pascal@20751 583 if ($1 == "sub") op="-"
pascal@20751 584 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 585 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20751 586 if (op != "" && isnum(args[2])) {
pascal@20751 587 split(line[0],reg,",")
pascal@20751 588 if (substr(reg[1],length(reg[1])-1,2) == args[1]) {
pascal@20751 589 line[0] = substr(line[0],1,length(line[0])-1) op args[2] "]"
pascal@20751 590 next
pascal@20751 591 }
pascal@20751 592 }
pascal@20630 593 hold=0
pascal@20630 594 if (/^ mov [sd]i,ax$/) {
pascal@20630 595 split($2,args,",")
pascal@20630 596 for (i = 0; i < kept; i++) {
pascal@20630 597 sub(/ax/,args[1],line[i]); print line[i]
pascal@20630 598 }
pascal@20630 599 next
pascal@20630 600 }
pascal@20630 601 for (i = 0; i < kept; i++) print line[i]
pascal@20630 602 }
pascal@20634 603 else if (hold == 11) {
pascal@20634 604 if (/^ inc ax$/ || /^ dec ax$/) {
pascal@20634 605 line[kept++]=$0; next
pascal@20634 606 }
pascal@20634 607 split($2,args,",")
pascal@20634 608 if (/^ mov cl,/) {
pascal@20634 609 split($2,args,",")
pascal@20634 610 if (args[2] >= 8) {
pascal@20634 611 line[kept++]=$0; next
pascal@20634 612 }
pascal@20634 613 }
pascal@20634 614 if (!/^ shl ax,/ || (args[2] != "cl" && args[2] < 8)) {
pascal@20634 615 print " cbw "
pascal@20634 616 }
pascal@20634 617 for (i = 0; i < kept; i++) print line[i]
pascal@20634 618 hold=kept=0
pascal@20634 619 }
pascal@20634 620 else if (hold == 12) {
pascal@20634 621 hold=0
pascal@20634 622 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 623 print " inc " regs[1]
pascal@20634 624 print " inc " regs[1]
pascal@20634 625 }
pascal@20634 626 else print " add " regs[1] ",2"
pascal@20634 627 }
pascal@20634 628 else if (hold == 13) {
pascal@20634 629 hold=0
pascal@20634 630 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 631 print " dec " regs[1]
pascal@20634 632 print " dec " regs[1]
pascal@20634 633 }
pascal@20634 634 else print " sub " regs[1] ",2"
pascal@20634 635 }
pascal@21569 636 else if (hold == 14) {
pascal@21569 637 if (/^ push ax$/) { hold++; next; }
pascal@21569 638 print " push dx";
pascal@21569 639 hold=0;
pascal@21569 640 }
pascal@21569 641 else if (hold == 15) {
pascal@21569 642 if (/^ pop eax$/) { hold++; next; }
pascal@21569 643 print " push dx";
pascal@21569 644 print " push ax";
pascal@21569 645 hold=0;
pascal@21569 646 }
pascal@21569 647 else if (hold == 16) {
pascal@21569 648 hold=0;
pascal@21569 649 if (/^ shr eax,16$/) { print " xchg ax,dx"; next; }
pascal@21569 650 print " push dx";
pascal@21569 651 print " push ax";
pascal@21569 652 print " pop eax";
pascal@21569 653 }
pascal@21569 654 else if (hold == 17) {
pascal@21569 655 hold=0;
pascal@21569 656 if (/^ cmp ax,-1$/) { print " inc ax"; next; }
pascal@21569 657 }
pascal@21576 658 if (/^ call near ptr @fileexist\$/ || # return boolean :
pascal@21576 659 /^ call near ptr @isoreaddir\$/ || # 0=true, -1=false
pascal@21628 660 /^ call near ptr @isoreset\$/ ||
pascal@21628 661 /^ call near ptr @isoopen\$/ ||
pascal@21628 662 /^ call near ptr @isoreadsector\$/ ||
pascal@21628 663 /^ call near ptr @strhead\$/ ||
pascal@23984 664 /^ call near ptr @strcmp\$/ ||
pascal@21576 665 /^ call near ptr @argstr\$/ ||
pascal@21576 666 /^ call near ptr @argnum\$/) { print; hold=17; next; }
pascal@20458 667 s=$0
pascal@20458 668 # These optimisation may break ZF or CF
pascal@20485 669 if (/^ sub sp,2$/) { print " push ax"; next }
pascal@20485 670 if (/^ sub sp,4$/) { print " push ax"; print " push ax"; next }
pascal@20485 671 if (/^ add sp,4$/) { print " pop cx"; print " pop cx"; next }
pascal@20458 672 if (/^ mov d*word ptr .*,0$/ || /^ mov dword ptr .*,large 0$/) {
pascal@20458 673 sub(/mov/,"and",s); print s; next # slower
pascal@20458 674 }
pascal@20458 675 if (/^ mov d*word ptr .*,-1$/ || /^ mov dword ptr .*,large -1$/) {
pascal@20458 676 sub(/mov/,"or",s); print s; next # slower
pascal@20458 677 }
pascal@20458 678 if (/^ or .*,0$/ || /^ and .*,-1$/) next
pascal@20458 679 if (/^ or [abcd]x,/) {
pascal@20458 680 split($2,args,",")
pascal@20458 681 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 682 print " or " substr(args[1],1,1) "l," args[2]; next
pascal@20458 683 }
pascal@20458 684 }
pascal@20458 685 if (/^ and [abcd]x,/) {
pascal@20458 686 split($2,args,",")
pascal@20459 687 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 688 print " and " substr(args[1],1,1) "l," args[2]; next
pascal@20458 689 }
pascal@20458 690 }
pascal@20458 691 if (/^ or e[abcd]x,/) {
pascal@20458 692 split($2,args,",")
pascal@20458 693 if (args[2] == "large") { args[2] = $3 }
pascal@20458 694 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 695 print " or " substr(args[1],2,1) "l," args[2]; next
pascal@20458 696 }
pascal@20458 697 }
pascal@20458 698 if (/^ and e[abcd]x,/) {
pascal@20458 699 split($2,args,",")
pascal@20458 700 if (args[2] == "large") { args[2] = $3 }
pascal@20459 701 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 702 print " and " substr(args[1],2,1) "l," args[2]; next
pascal@20458 703 }
pascal@20458 704 }
pascal@20458 705 if (/^ or e[abcds][ix],/) {
pascal@20458 706 split($2,args,",")
pascal@20458 707 if (args[2] == "large") { args[2] = $3 }
pascal@20458 708 if (isnum(args[2]) && args[2] >= 0 && args[2] < 65536) {
pascal@20458 709 print " or " substr(args[1],2) "," args[2]; next
pascal@20458 710 }
pascal@20458 711 }
pascal@20458 712 if (/^ and e[abcds][ix],/) {
pascal@20458 713 split($2,args,",")
pascal@20458 714 if (args[2] == "large") { args[2] = $3 }
pascal@20459 715 if (isnum(args[2]) && args[2] >= -65536 && args[2] < 0) {
pascal@20458 716 print " and " substr(args[1],2) "," args[2]; next
pascal@20458 717 }
pascal@20458 718 }
pascal@20543 719 if (/^ add word ptr/ || /^ sub word ptr/ ||
pascal@20544 720 /^ add [bcd]x,/ || /^ sub [bcd]x,/) {
pascal@20542 721 split($0,args,",")
pascal@20542 722 if (isnum(args[2]) && (args[2] % 256 == 0)) {
pascal@20544 723 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 724 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20542 725 print s "/256"; next
pascal@20542 726 }
pascal@20542 727 }
pascal@20546 728 if (/^ add dword ptr/ || /^ sub dword ptr/) {
pascal@20458 729 split($0,args,",")
pascal@20543 730 if (args[2] == "large") { args[2] = $3 }
pascal@20458 731 if (isnum(args[2])) {
pascal@20546 732 if (args[2] % 16777216 == 0) {
pascal@20546 733 sub(/dword/,"byte",s)
pascal@20543 734 sub(/\],/,"+3],",s) || sub(/,/,"+3,",s)
pascal@20458 735 print s "/16777216"; next
pascal@20458 736 }
pascal@20458 737 if (args[2] % 65536 == 0) {
pascal@20546 738 sub(/dword/,"word",s)
pascal@20543 739 sub(/\],/,"+2],",s) || sub(/,/,"+2,",s)
pascal@20458 740 print s "/65536"; next
pascal@20458 741 }
pascal@20458 742 }
pascal@20458 743 }
pascal@20458 744 if (/^ mov e.x,/) {
pascal@20458 745 split($2,args,",")
pascal@20458 746 r=args[1]
pascal@20458 747 if (args[2] == "large") { args[2] = $3 }
pascal@20458 748 if (isnum(args[2]) && args[2] % 65536 == args[2]) {
pascal@20458 749 if (args[2] % 256 == args[2] || args[2] % 256 == 0) {
pascal@20458 750 print " xor " r "," r
pascal@20458 751 if (args[2] == 0) next
pascal@20458 752 x=" mov " substr(r,2,1)
pascal@20458 753 if (args[2] % 256 == 0) {
pascal@20458 754 print x "h," args[2] "/256"
pascal@20458 755 }
pascal@20458 756 else { print x "l," args[2] }
pascal@20458 757 next
pascal@20458 758 }
pascal@20458 759 }
pascal@20458 760 }
pascal@21576 761 if (afterjmp) print ";" $0
pascal@21576 762 else print
pascal@21754 763 if (/^ jmp / || /^ call near ptr _boot_kernel/ ||
pascal@23992 764 /^ call near ptr @die\$qpxzc/ ||
pascal@23992 765 /^ call near ptr @exit\$qv/) afterjmp=1
pascal@20458 766 }