wok annotate linld/stuff/src/pipehole.awk @ rev 23808

linld: add isoboot (again)
author Pascal Bellard <pascal.bellard@slitaz.org>
date Sun May 24 16:31:14 2020 +0000 (2020-05-24)
parents d70f7cc6e3ac
children c04335df099f
rev   line source
pascal@21791 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@21984 10 if (/debug S/) print " %PAGESIZE 1000"
pascal@21984 11 if (file == "tazboot.cpp") {
pascal@21984 12 if (/add si,2/) $0=" lodsw ; " $0
pascal@21984 13 if (/add si,4/) { print " lodsw"; $0=" lodsw ; " $0 }
pascal@21984 14 if (/add di,2/) $0=" scasw ; " $0
pascal@21989 15 if (/int argc/) istazboot=1
pascal@21989 16 if (istazboot == 1) {
pascal@21989 17 if (/push.*i$/) $0="; " $0
pascal@21989 18 if (/word ptr/) { istazboot=0; $0="; " $0 }
pascal@21989 19 }
pascal@21984 20 } # file == "tazboot.cpp"
pascal@21984 21 if (file == "linld.cpp") {
pascal@21984 22 if (/add si,2/) $0=" lodsw ; " $0
pascal@21984 23 if (/add di,2/) $0=" scasw ; " $0
pascal@21984 24 if (/bx,offset DGROUP:s@\+26/) sub(/mov/,";mov")
pascal@21984 25 if (islinld==1) {
pascal@21984 26 print "; " $0
pascal@21984 27 if (!/word ptr/) next
pascal@21984 28 islinld=0
pascal@21984 29 sub(/,word.*/,",di ; argv")
pascal@21984 30 if (/di,di/) { print "; " $0; next }
pascal@21984 31 }
pascal@21984 32 if (/^_main proc/) islinld=1
pascal@21984 33 if (/== 0x662F/) islinld=2
pascal@21984 34 if (islinld==2) {
pascal@21984 35 if (/cpuhaslm/) islinld=0
pascal@21984 36 if (/mov/) { print "; " $0; next }
pascal@21984 37 }
pascal@21984 38 if (/image\|initrd/) islinld=3
pascal@21984 39 if (islinld==3) {
pascal@21984 40 if (/bx,word ptr/) { islinld=0; print "; " $0; next }
pascal@21984 41 }
pascal@21984 42 if (/fileexist\$qpxzc/) islinld=4
pascal@21984 43 if (islinld==4) {
pascal@21984 44 if (/ax,-1/) print " mov bx,word ptr [si]"
pascal@21984 45 if (/ax,word ptr/) $0=" xchg ax,bx"
pascal@21984 46 if (/\[si\]$/) { islinld=0; print "; " $0; next }
pascal@21984 47 }
pascal@23804 48 if (islinld==5) {
pascal@23808 49 if (/si/ || /word ptr/) next
pascal@23806 50 if (/buf_cmdline/) {
pascal@23806 51 print " lodsw"
pascal@23806 52 islinld=0
pascal@23806 53 }
pascal@23804 54 }
pascal@23806 55 if (/do strcatb/) islinld=5
pascal@21984 56 } # file == "linld.cpp"
pascal@21791 57 if (file == "himem.cpp") {
pascal@21984 58 if (/void load_image/) ishimem=1
pascal@21791 59 if (ishimem == 1 && is386 == 0) {
pascal@21791 60 if (/si\+8\]$/ || /si\+4\]$/ || /si\+16\]$/) next
pascal@21791 61 if (/si\+6\]$/ || /si\+2\]$/ || /si\+14\]$/) sub(/mov dx,/,"les dx,d")
pascal@21791 62 if (/si\+12\],ax/ || /si\+16\],ax/ || /bp-2\],ax/) sub(/,ax/,",es")
pascal@21984 63 }
pascal@21984 64 if (ishimem == 1) {
pascal@21984 65 if (/do \{/) ishimem=2
pascal@21984 66 if (/byte ptr DGROUP:_vcpi,0/) print " mov bx,si"
pascal@21984 67 if (/bx,si/) next
pascal@21984 68 if (/sp,6/) {
pascal@21984 69 print " push si"
pascal@21984 70 print " push si"
pascal@21984 71 next
pascal@21984 72 }
pascal@21984 73 }
pascal@21984 74 if (ishimem == 2) {
pascal@21984 75 if (/movzx/) print " cwde"
pascal@21984 76 if (/bp-6/) next
pascal@21984 77 if (/storepage.bufv/) {
pascal@21984 78 print " inc ax"
pascal@21984 79 print " push ax"
pascal@21984 80 }
pascal@21984 81 if (/buf \+= size;/) {
pascal@21984 82 print " pop ax"
pascal@21984 83 }
pascal@21984 84 if (/Read error/) ishimem=0
pascal@21791 85 }
pascal@21791 86 } # file == "himem.cpp"
pascal@21791 87 if (file == "load.cpp") {
pascal@22152 88 if (/i\+21\],513$/) isload=11
pascal@21984 89 if (isload == 12) { # LOAD.LST
pascal@21984 90 if (/cmp/) next
pascal@21984 91 if (/jb/) isload=0
pascal@21984 92 sub(/jb/,"jcxz")
pascal@21984 93 }
pascal@21984 94 if (isload == 11) { # LOAD.LST
pascal@21984 95 if (/cmp/) {
pascal@21984 96 print " mov cx,513"
pascal@22152 97 sub(/cmp /,"sub cx,")
pascal@22152 98 sub(/,513/,"")
pascal@21984 99 }
pascal@21984 100 if (/jb/) isload=12
pascal@21984 101 sub(/jb/,"ja")
pascal@21984 102 }
pascal@22170 103 sub(/_imgs\+65534/,"_imgs-2")
pascal@22152 104 if (/m, _rm_size/) isload=10
pascal@21791 105 if (isload == 10) { # LOAD.LST
pascal@21791 106 if (/^ je /) next
pascal@21791 107 if (/ptr @die\$qpxzc/) {
pascal@21791 108 $0=" jne @die@"
pascal@21791 109 isload=0
pascal@21791 110 }
pascal@21791 111 }
pascal@21791 112 if (/setup_sects == 0/) isload=9
pascal@21791 113 if (isload == 9) { # LOAD.LST
pascal@21791 114 sub(/,0/,",al")
pascal@21791 115 if (/jne/) isload=0
pascal@21791 116 }
pascal@21784 117 if (/fallback\)\[1\] == 0/) isload=8
pascal@21784 118 if (isload == 8) { # LOAD.LST
pascal@21784 119 if (/load_image/) isload=0
pascal@21784 120 else next
pascal@21784 121 }
pascal@21757 122 if (/cmd_line_ptr =/ && is386 == 0) isload=7
pascal@21757 123 if (isload == 7) { # LOAD.LST
pascal@22181 124 if (/add/ || /xor/ || /extrn/ || /N_LXLSH@/ || /cl,4/ || /,ax/) next
pascal@22170 125 if (/enable A20 if needed/) { print nextinst; isload=0 }
pascal@22152 126 if (/i-463/) $0=" mov bx,-463"
pascal@22170 127 if (/i-465/) {
pascal@22170 128 sub(/465/,"2"); sub(/\[/,"[bx+")
pascal@22170 129 nextinst=$0; sub(/-2\],-23745/,"],8000h",nextinst)
pascal@22170 130 }
pascal@21757 131 if (/,dx/) {
pascal@21757 132 print " mov cl,12"
pascal@21757 133 print " shr ax,cl"
pascal@22181 134 print " mov bx,55"
pascal@21757 135 sub(/dx/,"ax")
pascal@21757 136 }
pascal@21757 137 }
pascal@21757 138 if (/\[0\] = m-\>fallback/) isload=6
pascal@21757 139 if (isload == 6) { # LOAD.LST
pascal@21984 140 if (/si\+2/) $0=" lodsw"
pascal@21757 141 if (/les/) sub(/bx,/,"ax,")
pascal@21757 142 if (/bx\+4/ || /es:/) {
pascal@21757 143 if (/bx\+4/) isload=0
pascal@21757 144 next
pascal@21757 145 }
pascal@21757 146 if (/si\+6/) {
pascal@21757 147 print " xchg ax,di"
pascal@21757 148 print " movsw"
pascal@21757 149 print " movsw"
pascal@21757 150 print " movsw"
pascal@21757 151 print " movsw"
pascal@21757 152 print " xchg ax,di"
pascal@21757 153 next
pascal@21757 154 }
pascal@21757 155 }
pascal@21757 156 if (/version_string = /) isload=5
pascal@21757 157 if (isload == 5) { # LOAD.LST
pascal@21757 158 sub(/ax,/,"bx,")
pascal@21757 159 if (/_version_string,/) isload=0
pascal@21757 160 if (/mov bx,ax/) next
pascal@21757 161 }
pascal@22180 162 if (/_base_himem\+2/ && is386 == 0) isload=4
pascal@22180 163 if (isload == 4) { # LOAD.LST
pascal@22180 164 if (/_base_himem\+2/) next
pascal@22180 165 if (/_base_himem$/) {
pascal@22180 166 sub(/mov dx,/,"les dx,d")
pascal@21757 167 }
pascal@21791 168 sub(/,ax/,",es")
pascal@22181 169 if (/add ax,word ptr/) $0=" add ax,cx"
pascal@22181 170 if (/i\+29\],0/) {
pascal@22181 171 sub(/,0$/,"")
pascal@22181 172 sub(/cmp /,"mov cx,")
pascal@22181 173 }
pascal@22181 174 sub(/je/,"jcxz")
pascal@22181 175 if (/@strcpy/) isload=0
pascal@21757 176 }
pascal@21754 177 if (/void load_initrd\(\)/) isload=3
pascal@21754 178 if (isload == 3) { # LOAD.LST
pascal@21754 179 if(/push di/ || /pop di/) next
pascal@21754 180 sub(/\[di/,"[bx")
pascal@21754 181 sub(/\di,/,"bx,")
pascal@21754 182 }
pascal@21750 183 if (/vid_mode = vid_mode/) isload=2
pascal@21750 184 if (isload == 2) { # LOAD.LST
pascal@21750 185 sub(/,0/,""); sub(/cmp /,"mov cx,")
pascal@21750 186 sub(/je/,"jcxz")
pascal@21750 187 if (/ax,word/) next
pascal@21750 188 sub(/,ax/,",cx")
pascal@21757 189 if (/version_string/ || /starting linux 1\.3\.73/) isload=0
pascal@21750 190 }
pascal@22677 191 if (/die\(not_kernel/ || /_rm_size=0x200/ || /heap_top = _rm_buf/) isload=1
pascal@21750 192 if (isload == 1) { # LOAD.LST
pascal@21791 193 if (/ptr .die\$qpxzc/) $0="@die@:\n" $0
pascal@21729 194 if (/mov al,byte ptr/ && is386) {
pascal@22152 195 sub(/mov al/,"movzx eax")
pascal@21729 196 }
pascal@21791 197 if (is386 == 0) {
pascal@22152 198 if (/m->size -= _rm_size/) print " cwd"
pascal@21791 199 sub(/,0$/,",dx")
pascal@21791 200 }
pascal@21729 201 if (/ax,word ptr/) next
pascal@21729 202 if (/^ call/) isload=0
pascal@21729 203 }
pascal@21791 204 } # file == "load.cpp"
pascal@21791 205 if (file == "iso9660.cpp") {
pascal@21791 206 if (/<< SECTORBITS/) isiso=9
pascal@21791 207 if (isiso == 9) { # ISO9660.LST
pascal@21791 208 if (/dx,/) next
pascal@21791 209 sub(/mov ax,/,"les ax,d")
pascal@21791 210 if (/^ call/) {
pascal@21791 211 print " extrn N_LXLSH@ES:near"
pascal@21791 212 sub(/N_LXLSH@/,"N_LXLSH@ES")
pascal@21791 213 isiso=0
pascal@21791 214 }
pascal@21791 215 }
pascal@21791 216 if (/filesize =/) isiso=8
pascal@21791 217 if (isiso == 8) { # ISO9660.LST
pascal@21791 218 if (/ax,/) next
pascal@21791 219 sub(/mov dx,/,"les dx,d")
pascal@21791 220 sub(/,ax/,",es")
pascal@21791 221 if (/filemod/) isiso=0
pascal@21791 222 }
pascal@21754 223 if (/CD001/) isiso=7
pascal@21754 224 if (isiso == 7) { # ISO9660.LST
pascal@21754 225 sub(/mov ax,-1/,"dec ax")
pascal@21754 226 if (/jmp/) isiso=0
pascal@21754 227 }
pascal@21754 228 if (/int len =/) isiso=6
pascal@21754 229 if (isiso == 6) { # ISO9660.LST
pascal@21754 230 if (/dx,ax/) next
pascal@21754 231 sub(/ax/,"dx")
pascal@21754 232 sub(/cx,di/,"bx,di")
pascal@21754 233 sub(/cx,dx/,"bx,ax")
pascal@21754 234 sub(/di,dx/,"di,ax")
pascal@21754 235 if (/while/) isiso=2
pascal@21754 236 }
pascal@21754 237 if (/entrysize =/) isiso=5
pascal@21754 238 if (isiso == 5) { # ISO9660.LST
pascal@21754 239 if (/ax,ax/) next
pascal@21754 240 sub(/ax/,"cx")
pascal@21754 241 sub(/je/,"jcxz")
pascal@21754 242 if (/return/) isiso=0
pascal@21754 243 }
pascal@21735 244 if (/x->curdirsize == 0xFFFF/) isiso=4
pascal@21735 245 if (isiso == 4) { # ISO9660.LST
pascal@21754 246 sub(/DGROUP:_isostate\+18/,"[si+18]")
pascal@21754 247 sub(/DGROUP:_isostate\+20/,"[si+20]")
pascal@21747 248 if (/goto restarted/) isiso=0
pascal@21735 249 }
pascal@21791 250 } # file == "iso9660.cpp"
pascal@21791 251 if (file == "iso9660.cpp" || file == "tazboot.cpp") {
pascal@21754 252 if (/do s\+\+; while/) isiso=3
pascal@21801 253 if (/for \(p = s; \*s && \*s \!=/) isiso=3 # tazboot/main
pascal@21750 254 if (isiso == 3) { # ISO9660.LST, TAZBOOT.LST
pascal@21754 255 sub(/cmp byte ptr \[.i\]/,"sub al")
pascal@21754 256 if (/mov byte ptr \[bp-5\],al/) $0=" push ax"
pascal@21754 257 if (/mov al,byte ptr \[bp-5\]/) $0=" pop ax"
pascal@21754 258 if (/inc /) { r=$2; print; next }
pascal@21754 259 if (/al,0/) print " mov al,[" r "]"
pascal@21754 260 if (/al,byte ptr/) sub(/mov/,"xchg")
pascal@21754 261 if (/byte ptr \[.*\],0/) next
pascal@21791 262 if (/jmp/) {
pascal@21791 263 print " mov bx,si"
pascal@21791 264 $0=" db 0A8h ; test al,xx instead of " $0
pascal@21791 265 }
pascal@21754 266 if (/word ptr \[bp-4\]/) next
pascal@21754 267 if (/\) s\+\+;/ || /\],-1/) isiso=0
pascal@21735 268 }
pascal@21791 269 } # file == "iso9660.cpp" || file == "tazboot.cpp"
pascal@21791 270 if (file == "iso9660.cpp") {
pascal@21735 271 if (/endname = NULL/) isiso=2
pascal@21735 272 if (isiso == 2) { # ISO9660.LST
pascal@21735 273 if (/mov bx,cx/) next
pascal@21735 274 gsub(/cx/,"bx")
pascal@21754 275 sub(/DGROUP:_isostate\+35/,"[si+35]")
pascal@21735 276 }
pascal@21735 277 if (/const char \*n = name/) isiso=1
pascal@21735 278 if (isiso == 1) { # ISO9660.LST
pascal@21735 279 if ((/mov word ptr \[si\+32\],ax/ ) ||
pascal@21754 280 (/mov ax,word ptr \[si\+2\]/) ||
pascal@21735 281 (/bx,word ptr \[si\+32\]/) || (/ax,dx/)) next
pascal@21729 282 if (/dx,/) sub(/dx/,"ax")
pascal@21754 283 if ((/sub ax,word ptr \[si\+2\]/) ||
pascal@21754 284 (/\[si\+16\]/) || (/ax,di/)) sub(/ax/,"bx")
pascal@21754 285 if (/add word ptr \[si\+32\],ax/) $0=" add bx,word ptr [si+16]"
pascal@21735 286 if (/al,/ || /,al/) sub(/al/,"cl")
pascal@21754 287 if (/cmp byte ptr \[si\+34\],0/) $0=" or cl,cl"
pascal@21735 288 if (/jne @@0$/) next
pascal@21735 289 if (/jmp @3@58$/) $0=" je @3@58"
pascal@21754 290 sub(/mov ax,-1/,"dec ax")
pascal@21754 291 }
pascal@21791 292 } # file == "iso9660.cpp"
pascal@21754 293 if (/endp/) { xlabel = ""; goto2=0 }
pascal@21801 294 if (/isoopen\(s\+7\)/ && xlabel == "") goto2=1 # tazboot/bootiso
pascal@21801 295 if (/_vid_mode,ax/ && xlabel == "") goto2=1 # tazboot/main
pascal@21801 296 if (/_initrd_name,si/ && xlabel == "") goto2=1 # tazboot/main
pascal@21801 297 if (/_base_himem\+2,/ && xlabel == "@") goto2=1 # tazboot/bootiso tazboot/main
pascal@21801 298 if (/DGROUP:_skip_alloc/ && xlabel == "@") goto2=1 # tazboot/bootiso tazboot/main
pascal@21754 299 if (/puts\(cmdline\)/ && xlabel == "@@") goto2=1
pascal@21754 300 if (goto2 == 1 && /jmp/) { # TAZBOOT.LST && LINLD.LST
pascal@21754 301 print $NF xlabel "@:"
pascal@21754 302 label=$NF
pascal@21754 303 }
pascal@21754 304 if (goto2 > 0 && label == $NF) {
pascal@21754 305 $0=$0 xlabel
pascal@21754 306 if (goto2++ == 1) xlabel=xlabel "@"
pascal@21754 307 }
pascal@21801 308 if (file == "tazboot.cpp" && /close\(x/) isotazboot=16
pascal@21801 309 if (isotazboot == 160) { # TAZBOOT.LST
pascal@21801 310 $0="; " $0
pascal@21801 311 if (/ret/) isotazboot=0
pascal@21801 312 }
pascal@21801 313 if (isotazboot == 16) { # TAZBOOT.LST
pascal@21801 314 if (/@.@/) {
pascal@21801 315 isotazboot=160
pascal@21801 316 next
pascal@21801 317 }
pascal@21801 318 }
pascal@21801 319 if (file == "tazboot.cpp" && /jne @@2/) isotazboot=15
pascal@21801 320 if (isotazboot == 15) { # TAZBOOT.LST
pascal@21801 321 if (/@.@/) {
pascal@21801 322 print " pop di"
pascal@21801 323 print " pop si"
pascal@21801 324 print " mov sp,bp"
pascal@21801 325 print " pop bp"
pascal@21801 326 print " ret"
pascal@21801 327 next
pascal@21801 328 }
pascal@21801 329 if (/skip_alloc/) isotazboot=0
pascal@21801 330 }
pascal@21791 331 if (/if\(\*s>=/) isotazboot=14
pascal@21791 332 if (isotazboot == 14) { # LINLD.LST
pascal@21791 333 if (/jmp/) {
pascal@21791 334 $0=" db 0A9h ; test ax,xxxx instead of " $0
pascal@21791 335 isotazboot=0
pascal@21791 336 }
pascal@21791 337 }
pascal@21801 338 if (file == "tazboot.cpp" && /; s \+= 4/) isotazboot=13 # tazboot/main
pascal@21791 339 if (isotazboot == 13) { # TAZBOOT.LST
pascal@21791 340 if (/si,4/) $0=" lea bx,[si+4]"
pascal@21791 341 if (/bx,si/) next
pascal@21791 342 if (/DGROUP:_topmem/ || /set_iso/) isotazboot=0
pascal@21791 343 }
pascal@21801 344 if (file == "tazboot.cpp" && /case 0x652F:/) isotazboot=12 # tazboot/main
pascal@21791 345 if (isotazboot == 12) { # TAZBOOT.LST
pascal@21791 346 sub(/si,word/,"bx,word")
pascal@21791 347 if (/short/) isotazboot=0
pascal@21791 348 }
pascal@21801 349 if (/return load_kernel/) isotazboot=11 # tazboot/isokernel
pascal@21791 350 if (isotazboot == 11) { # TAZBOOT.LST
pascal@21791 351 sub(/call/,"jmp")
pascal@21791 352 if (/ret/ || /pop/) next
pascal@21791 353 if (/endp/) isotazboot=0
pascal@21791 354 }
pascal@21801 355 if (/cmdline=s\+=3/ || /magic \!= 0/ || /&root_dev =/) { isotazboot=10; j="" } # ,tazboot/bootiso,tazboot/main
pascal@21754 356 if (isotazboot == 10) { # TAZBOOT.LST && LINLD.LST
pascal@21754 357 if (/je/ || /jne/) { j=$1; next }
pascal@21754 358 if (/jmp/) {
pascal@21754 359 if (j=="jne") sub(/jmp/,"je")
pascal@21754 360 else if (j=="je") sub(/jmp/,"jne")
pascal@21754 361 isotazboot=0
pascal@21754 362 }
pascal@21754 363 }
pascal@21801 364 if (/static const unsigned long initrddesc = 18L/) isotazboot=9 # tazboot/bootiso
pascal@21754 365 if (isotazboot == 9) { # TAZBOOT.LST
pascal@21754 366 if (/,0/) {
pascal@21754 367 split($4,y,",")
pascal@21754 368 print " mov bx,offset " y[1]
pascal@21801 369 sub(/DGROUP:.*,/,"[bx],")
pascal@21754 370 }
pascal@21801 371 if (/mov/ && $3 == y[1]) next
pascal@21801 372 if (/je/) next
pascal@21801 373 if (/jmp/) sub(/jmp/,"jne")
pascal@21801 374 sub(/ax,offset/,"bx,offset")
pascal@21801 375 if (/bx,ax/) { isotazboot=0; next }
pascal@21729 376 }
pascal@21801 377 if (/isoopen\(s\+7\) != -1/) isotazboot=8 # tazboot/bootiso
pascal@21750 378 if (isotazboot == 8) { # TAZBOOT.LST
pascal@21801 379 sub(/\[bx/,"[si")
pascal@21801 380 if (/bx,si/) next
pascal@21750 381 if (/magic/) isotazboot=0
pascal@21750 382 }
pascal@21801 383 if (/isoopen\(\"bzImage\"\)/) isotazboot=7 # tazboot/bootiso
pascal@21750 384 if (isotazboot == 7) { # TAZBOOT.LST
pascal@21791 385 if (/inc/ || /,al/) next
pascal@21791 386 if (/al,byte/) sub (/mov al,/,"inc ")
pascal@21750 387 if (/isokernel/) isotazboot=0
pascal@21750 388 }
pascal@21801 389 if (/if \(c\) s\+\+;/) isotazboot=6 # tazboot/main
pascal@21750 390 if (isotazboot == 6) { # TAZBOOT.LST
pascal@21750 391 if (/cmp/) {
pascal@21750 392 $0=" cmp al,0"
pascal@21750 393 isotazboot=0
pascal@21750 394 }
pascal@21750 395 }
pascal@21801 396 if (/static void next_chunk/) isotazboot=5 # tazboot/next_chunk
pascal@21791 397 if (isotazboot == 501) {
pascal@21791 398 if (/ret/) {
pascal@21791 399 print "@1@86:"
pascal@21791 400 isotazboot=0
pascal@21791 401 }
pascal@21791 402 }
pascal@21754 403 if (isotazboot == 5 || isotazboot == 500) { # TAZBOOT.LST
pascal@21750 404 if (/cx,ax/) $0=" xchg ax,bx"
pascal@21754 405 if (/ax,word ptr \[si\+28\]/ && isotazboot == 500) next
pascal@21750 406 if (/bx,cx/) next
pascal@21754 407 if (/push/ || /pop/ || /bp,sp/ || /si,/) next
pascal@21754 408 sub(/\[si/,"[di")
pascal@21754 409 if (/initrd_info/) isotazboot=500
pascal@21791 410 if (/bx\+6\]/) next
pascal@21791 411 if (/bx\+4\]/) sub(/mov dx,/,"les dx,d")
pascal@21791 412 sub(/di\+24\],ax/,"di+24],es")
pascal@21791 413 sub(/call/,"jmp")
pascal@21791 414 if (/ret/ || /pop/ || /^@1@86:/) next
pascal@21791 415 if (/_isostate\+14/) next
pascal@21791 416 if (/_isostate\+12/) {
pascal@21791 417 sub(/mov ax,/,"les ax,d")
pascal@21791 418 print
pascal@21791 419 print " mov dx,es"
pascal@21791 420 next
pascal@21791 421 }
pascal@21791 422 if (/ax,-4/) isotazboot++
pascal@21750 423 }
pascal@21801 424 if (/0x7FF0/) isotazboot=4 # tazboot/bootiso
pascal@21750 425 if (isotazboot == 4) { # TAZBOOT.LST
pascal@21750 426 if (/ax,word ptr/) {
pascal@21750 427 print " mov ax,32752"
pascal@21754 428 print " cwd"
pascal@21750 429 sub(/mov/,"sub")
pascal@21750 430 }
pascal@21750 431 if (/bx,/ || /cx,/ || /dx,/) next
pascal@21754 432 sub(/,0/,",dx")
pascal@21754 433 sub(/,bx/,",dx")
pascal@21750 434 sub(/,cx/,",ax")
pascal@21754 435 if (/@addinitrd\$qv/) isotazboot=0
pascal@21750 436 }
pascal@21801 437 if (/c = x->filename/) isotazboot=3 # tazboot/bootiso
pascal@21750 438 if (isotazboot == 3) { # TAZBOOT.LST
pascal@21750 439 if (/ax,/) $0=" xchg ax,bx"
pascal@21750 440 if (/\]$/) next
pascal@21750 441 if (/@strcpy\$qpxzct1/) isotazboot=0
pascal@21750 442 }
pascal@21801 443 if (/base_himem = memtop/) isotazboot=2 # tazboot/bootiso
pascal@21750 444 if (isotazboot == 2) { # TAZBOOT.LST
pascal@21801 445 if (/word ptr \[si\+2\],0/) {
pascal@21754 446 print s; hold=0
pascal@21801 447 print " mov bx,word ptr [si+2]"
pascal@21752 448 $0=" or bx,bx"
pascal@21752 449 }
pascal@21752 450 if (/\[bp-4\],ax/) sub(/ax/,"bx")
pascal@21801 451 if (/ax,word ptr \[si\+2\]/ || /bx,ax/) next
pascal@21791 452 if (/_base_himem\+2,dx/) {
pascal@21791 453 print " mov bx,offset DGROUP:_base_himem+2"
pascal@21791 454 }
pascal@21791 455 sub(/DGROUP:_base_himem,/,"[bx-2],")
pascal@21791 456 sub(/DGROUP:_base_himem\+2,/,"[bx],")
pascal@21791 457 sub(/DGROUP:_base_himem\+3,/,"[bx+1],")
pascal@21750 458 if (/@strcmp\$qpxzct1/) isotazboot=0
pascal@21750 459 }
pascal@21801 460 if (/static void addinitrd/) isotazboot=100 # tazboot/addinitrd
pascal@21751 461 if (isotazboot == 100) { # TAZBOOT.LST
pascal@21751 462 if (/cx,ax/) {
pascal@21754 463 print " mov si,offset _isostate+8"
pascal@21757 464 print " push ds"
pascal@21757 465 print " pop es"
pascal@21754 466 print " xchg ax,di"
pascal@21751 467 print " movsw"
pascal@21751 468 print " movsw"
pascal@21751 469 print " movsw"
pascal@21751 470 print " movsw"
pascal@21754 471 $0=" xchg ax,di"
pascal@21751 472 }
pascal@21751 473 if (/mov/ && !/si/ && !/cl/) next
pascal@21754 474 if (/void load_initrds/) isotazboot=101
pascal@21751 475 }
pascal@21754 476 if (isotazboot == 101 || isotazboot == 102) { # TAZBOOT.LST
pascal@21754 477 sub(/\[si/,"[di"); sub(/si,/,"di,"); sub(/si$/,"di")
pascal@21754 478 sub(/DGROUP:_imgs\+38$/,"[di+38-32]")
pascal@21754 479 sub(/DGROUP:_imgs\+40$/,"[di+40-32]")
pascal@21754 480 if (/isofd/) isotazboot=102
pascal@21754 481 if (/push/ && isotazboot == 102) next
pascal@21754 482 if (/pop/ && isotazboot == 102) next
pascal@21754 483 if (/load_initrd/) isotazboot=101
pascal@21754 484 if (/isokernel/) isotazboot=103
pascal@21754 485 }
pascal@21754 486 if (isotazboot > 102) { # TAZBOOT.LST
pascal@21754 487 if (/push/ || /pop/) next
pascal@21754 488 sub(/\[si/,"[bx")
pascal@21750 489 sub(/si,/,"bx,")
pascal@21750 490 if (/static void bootiso/) isotazboot=0
pascal@21750 491 }
pascal@21729 492 if (wascall) {
pascal@21729 493 if (rcall != "") {
pascal@21729 494 if (/,ax$/) print " mov " rcall ",ax"
pascal@21729 495 else print " xchg ax," rcall
pascal@21729 496 wascall=0
pascal@21729 497 }
pascal@21729 498 else if (/^ mov .i,ax$/) {
pascal@21729 499 split($2,y,",")
pascal@21729 500 rcall=y[1]
pascal@21729 501 next
pascal@21729 502 }
pascal@21729 503 else wascall=0
pascal@21729 504 }
pascal@21729 505 if (/^ call /) { wascall=1; rcall="" }
pascal@20458 506 if (hold == 0) {
pascal@20458 507 s=$0
pascal@20534 508 if (/^ mov .[ix],bx$/ || /^ mov .[ix],.i$/) {
pascal@20543 509 r=$2; kept=0
pascal@20458 510 hold=1; split($2,regs,","); next
pascal@20458 511 }
pascal@21729 512 if (/^ inc e?.[ixhl]/ || /^ dec e?.[ixhl]/) {
pascal@20458 513 hold=2; r=$2; next
pascal@20458 514 }
pascal@20458 515 if (/^ mov [abcds][ix],/ && ! /,.s/) {
pascal@20458 516 hold=3; split($2,regs,","); next
pascal@20458 517 }
pascal@20458 518 if (/^ movzx eax,ax$/) { hold=4; next }
pascal@20544 519 if (/^ cmp word ptr/ || /^ cmp [bcd]x,/) {
pascal@20543 520 split($0,regs,",")
pascal@20543 521 if (isnum(regs[2]) && regs[2] != 0 &&
pascal@20543 522 (regs[2] % 256) == 0) {
pascal@20549 523 hold=5; next
pascal@20543 524 }
pascal@20543 525 }
pascal@20630 526 if (/^ mov ax,cs$/) { hold=6; kept=0; next }
pascal@20630 527 if (/^ mov cl,4$/) { hold=7; next }
pascal@20630 528 if (/^ cmp word ptr DGROUP:.*,0$/) {
pascal@20630 529 hold=8; split($2,regs,","); next
pascal@20630 530 }
pascal@20634 531 if (/^ cbw/) { hold=11; kept=0; next }
pascal@20634 532 if (/^ add [abcds][ix],2$/) {
pascal@20634 533 split($2,regs,","); hold=12; next
pascal@20634 534 }
pascal@20634 535 if (/^ sub [abcds][ix],2$/) {
pascal@20634 536 split($2,regs,","); hold=13; next
pascal@20634 537 }
pascal@21569 538 if (/^ push dx$/) {
pascal@21569 539 hold=14; next;
pascal@21569 540 }
pascal@20458 541 }
pascal@20458 542 else if (hold == 1) {
pascal@20543 543 if (/^ ;/) { line[kept++]=$0; next }
pascal@20458 544 hold=0; split($2,args,","); op=""
pascal@20458 545 if ($1 == "add") op="+"
pascal@20458 546 if ($1 == "sub") op="-"
pascal@20751 547 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 548 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20543 549 if (op != "" && regs[1] == args[1]) {
pascal@20543 550 if (isnum(args[2])) {
pascal@20630 551 for (i = kept++; i > 0; i--) line[i] = line[i-1]
pascal@20630 552 line[0] = "\tlea\t" regs[1] ",[" regs[2] op args[2] "]"
pascal@22288 553 sub(/\+-/,"-",line[0])
pascal@20630 554 hold=10; next
pascal@20543 555 }
pascal@20543 556 line[kept++]=$0
pascal@20543 557 hold=1
pascal@20458 558 next
pascal@20458 559 }
pascal@20520 560 if (/^ pop [ds]i/ && regs[2] ~ /^[ds]i$/) {
pascal@20520 561 print " xchg " r
pascal@20520 562 }
pascal@20543 563 else print s
pascal@20543 564 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20458 565 }
pascal@20458 566 else if (hold == 2) {
pascal@21729 567 split($0,args,",")
pascal@21729 568 if (/^ mov / && r == args[2]) { print s; s=$0; next }
pascal@21729 569 split($2,args,",")
pascal@21729 570 hold=0; print s
pascal@20458 571 if ($1 == "or" && r == args[1] && r == args[2]) next # don't clear C ...
pascal@20458 572 }
pascal@20458 573 else if (hold == 3) {
pascal@20458 574 hold=0
pascal@21576 575 if (/^ call / && regs[2] == "ax") s=" xchg ax," regs[1]
pascal@20542 576 if (/^ add [abcds][ix],/) {
pascal@20458 577 split($2,regs2,",")
pascal@20458 578 if (regs[1] == regs2[1] && (regs2[2] == "offset" || isnum(regs2[2]))) {
pascal@20549 579 t=$0; sub(/mov/,$1,s); sub(/add/,"mov",t)
pascal@20458 580 print t; print s; next
pascal@20458 581 }
pascal@20458 582 }
pascal@20458 583 print s
pascal@20458 584 }
pascal@20458 585 else if (hold == 4) {
pascal@20458 586 hold=0
pascal@20458 587 if (/^ push eax$/) {
pascal@20458 588 print " push 0"; print " push ax"; next
pascal@20458 589 } else { print s }
pascal@20458 590 }
pascal@20543 591 else if (hold == 5) {
pascal@20543 592 hold=0
pascal@20543 593 if ($1 == "jae" || $1 == "jb") {
pascal@20544 594 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 595 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20543 596 s = s "/256"
pascal@20543 597 }
pascal@20543 598 print s
pascal@20543 599 }
pascal@20630 600 else if (hold == 6) {
pascal@20630 601 if (($1 == "and" || $1 == "add") && $2 ~ /^ax,/) {
pascal@20630 602 line[kept++]=$0
pascal@20630 603 next
pascal@20630 604 }
pascal@20630 605 p=$0
pascal@20630 606 if (/^ movzx eax,ax$/) {
pascal@20630 607 s=" mov eax,cs"; p=""
pascal@20630 608 }
pascal@20630 609 print s
pascal@20630 610 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20630 611 if (p != "") print p
pascal@20630 612 hold=0; next
pascal@20630 613 }
pascal@20630 614 else if (hold == 7) {
pascal@20458 615 hold=0
pascal@20520 616 if (/^ call near ptr N_LXURSH@$/) {
pascal@20520 617 print " extrn N_LXURSH@4:near"
pascal@20520 618 print " call near ptr N_LXURSH@4"
pascal@20520 619 next
pascal@20520 620 }
pascal@20528 621 if (/^ call near ptr N_LXLSH@$/) {
pascal@20528 622 print " extrn N_LXLSH@4:near"
pascal@20528 623 print " call near ptr N_LXLSH@4"
pascal@20528 624 next
pascal@20528 625 }
pascal@20520 626 print s
pascal@20458 627 }
pascal@20630 628 else if (hold == 8) {
pascal@20630 629 if ($1 == "je" || $1 == "jne") { p=$0; hold=9; next }
pascal@20630 630 hold=0
pascal@20630 631 print s
pascal@20630 632 }
pascal@20630 633 else if (hold == 9) {
pascal@20630 634 hold=0; split($2,args,",")
pascal@20630 635 if (/^ mov ax,/ && args[2] == regs[1]) {
pascal@20630 636 print; print " or ax,ax"; print p; next
pascal@20630 637 }
pascal@20630 638 print s; print p;
pascal@20630 639 }
pascal@20630 640 else if (hold == 10) {
pascal@20751 641 split($2,args,","); op=""
pascal@20751 642 if ($1 == "add") op="+"
pascal@20751 643 if ($1 == "sub") op="-"
pascal@20751 644 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 645 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20751 646 if (op != "" && isnum(args[2])) {
pascal@20751 647 split(line[0],reg,",")
pascal@20751 648 if (substr(reg[1],length(reg[1])-1,2) == args[1]) {
pascal@20751 649 line[0] = substr(line[0],1,length(line[0])-1) op args[2] "]"
pascal@20751 650 next
pascal@20751 651 }
pascal@20751 652 }
pascal@20630 653 hold=0
pascal@20630 654 if (/^ mov [sd]i,ax$/) {
pascal@20630 655 split($2,args,",")
pascal@20630 656 for (i = 0; i < kept; i++) {
pascal@20630 657 sub(/ax/,args[1],line[i]); print line[i]
pascal@20630 658 }
pascal@20630 659 next
pascal@20630 660 }
pascal@20630 661 for (i = 0; i < kept; i++) print line[i]
pascal@20630 662 }
pascal@20634 663 else if (hold == 11) {
pascal@20634 664 if (/^ inc ax$/ || /^ dec ax$/) {
pascal@20634 665 line[kept++]=$0; next
pascal@20634 666 }
pascal@20634 667 split($2,args,",")
pascal@20634 668 if (/^ mov cl,/) {
pascal@20634 669 split($2,args,",")
pascal@20634 670 if (args[2] >= 8) {
pascal@20634 671 line[kept++]=$0; next
pascal@20634 672 }
pascal@20634 673 }
pascal@20634 674 if (!/^ shl ax,/ || (args[2] != "cl" && args[2] < 8)) {
pascal@20634 675 print " cbw "
pascal@20634 676 }
pascal@20634 677 for (i = 0; i < kept; i++) print line[i]
pascal@20634 678 hold=kept=0
pascal@20634 679 }
pascal@20634 680 else if (hold == 12) {
pascal@20634 681 hold=0
pascal@20634 682 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 683 print " inc " regs[1]
pascal@20634 684 print " inc " regs[1]
pascal@20634 685 }
pascal@20634 686 else print " add " regs[1] ",2"
pascal@20634 687 }
pascal@20634 688 else if (hold == 13) {
pascal@20634 689 hold=0
pascal@20634 690 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 691 print " dec " regs[1]
pascal@20634 692 print " dec " regs[1]
pascal@20634 693 }
pascal@20634 694 else print " sub " regs[1] ",2"
pascal@20634 695 }
pascal@21569 696 else if (hold == 14) {
pascal@21569 697 if (/^ push ax$/) { hold++; next; }
pascal@21569 698 print " push dx";
pascal@21569 699 hold=0;
pascal@21569 700 }
pascal@21569 701 else if (hold == 15) {
pascal@21569 702 if (/^ pop eax$/) { hold++; next; }
pascal@21569 703 print " push dx";
pascal@21569 704 print " push ax";
pascal@21569 705 hold=0;
pascal@21569 706 }
pascal@21569 707 else if (hold == 16) {
pascal@21569 708 hold=0;
pascal@21569 709 if (/^ shr eax,16$/) { print " xchg ax,dx"; next; }
pascal@21569 710 print " push dx";
pascal@21569 711 print " push ax";
pascal@21569 712 print " pop eax";
pascal@21569 713 }
pascal@21569 714 else if (hold == 17) {
pascal@21569 715 hold=0;
pascal@21569 716 if (/^ cmp ax,-1$/) { print " inc ax"; next; }
pascal@21569 717 }
pascal@21576 718 if (/^ call near ptr @fileexist\$/ || # return boolean :
pascal@21576 719 /^ call near ptr @isoreaddir\$/ || # 0=true, -1=false
pascal@21628 720 /^ call near ptr @isoreset\$/ ||
pascal@21628 721 /^ call near ptr @isoopen\$/ ||
pascal@21628 722 /^ call near ptr @isoreadsector\$/ ||
pascal@21628 723 /^ call near ptr @strhead\$/ ||
pascal@21576 724 /^ call near ptr @argstr\$/ ||
pascal@21576 725 /^ call near ptr @argnum\$/) { print; hold=17; next; }
pascal@20458 726 s=$0
pascal@20458 727 # These optimisation may break ZF or CF
pascal@20485 728 if (/^ sub sp,2$/) { print " push ax"; next }
pascal@20485 729 if (/^ sub sp,4$/) { print " push ax"; print " push ax"; next }
pascal@20485 730 if (/^ add sp,4$/) { print " pop cx"; print " pop cx"; next }
pascal@20458 731 if (/^ mov d*word ptr .*,0$/ || /^ mov dword ptr .*,large 0$/) {
pascal@20458 732 sub(/mov/,"and",s); print s; next # slower
pascal@20458 733 }
pascal@20458 734 if (/^ mov d*word ptr .*,-1$/ || /^ mov dword ptr .*,large -1$/) {
pascal@20458 735 sub(/mov/,"or",s); print s; next # slower
pascal@20458 736 }
pascal@20458 737 if (/^ or .*,0$/ || /^ and .*,-1$/) next
pascal@20458 738 if (/^ or [abcd]x,/) {
pascal@20458 739 split($2,args,",")
pascal@20458 740 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 741 print " or " substr(args[1],1,1) "l," args[2]; next
pascal@20458 742 }
pascal@20458 743 }
pascal@20458 744 if (/^ and [abcd]x,/) {
pascal@20458 745 split($2,args,",")
pascal@20459 746 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 747 print " and " substr(args[1],1,1) "l," args[2]; next
pascal@20458 748 }
pascal@20458 749 }
pascal@20458 750 if (/^ or e[abcd]x,/) {
pascal@20458 751 split($2,args,",")
pascal@20458 752 if (args[2] == "large") { args[2] = $3 }
pascal@20458 753 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 754 print " or " substr(args[1],2,1) "l," args[2]; next
pascal@20458 755 }
pascal@20458 756 }
pascal@20458 757 if (/^ and e[abcd]x,/) {
pascal@20458 758 split($2,args,",")
pascal@20458 759 if (args[2] == "large") { args[2] = $3 }
pascal@20459 760 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 761 print " and " substr(args[1],2,1) "l," args[2]; next
pascal@20458 762 }
pascal@20458 763 }
pascal@20458 764 if (/^ or e[abcds][ix],/) {
pascal@20458 765 split($2,args,",")
pascal@20458 766 if (args[2] == "large") { args[2] = $3 }
pascal@20458 767 if (isnum(args[2]) && args[2] >= 0 && args[2] < 65536) {
pascal@20458 768 print " or " substr(args[1],2) "," args[2]; next
pascal@20458 769 }
pascal@20458 770 }
pascal@20458 771 if (/^ and e[abcds][ix],/) {
pascal@20458 772 split($2,args,",")
pascal@20458 773 if (args[2] == "large") { args[2] = $3 }
pascal@20459 774 if (isnum(args[2]) && args[2] >= -65536 && args[2] < 0) {
pascal@20458 775 print " and " substr(args[1],2) "," args[2]; next
pascal@20458 776 }
pascal@20458 777 }
pascal@20543 778 if (/^ add word ptr/ || /^ sub word ptr/ ||
pascal@20544 779 /^ add [bcd]x,/ || /^ sub [bcd]x,/) {
pascal@20542 780 split($0,args,",")
pascal@20542 781 if (isnum(args[2]) && (args[2] % 256 == 0)) {
pascal@20544 782 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 783 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20542 784 print s "/256"; next
pascal@20542 785 }
pascal@20542 786 }
pascal@20546 787 if (/^ add dword ptr/ || /^ sub dword ptr/) {
pascal@20458 788 split($0,args,",")
pascal@20543 789 if (args[2] == "large") { args[2] = $3 }
pascal@20458 790 if (isnum(args[2])) {
pascal@20546 791 if (args[2] % 16777216 == 0) {
pascal@20546 792 sub(/dword/,"byte",s)
pascal@20543 793 sub(/\],/,"+3],",s) || sub(/,/,"+3,",s)
pascal@20458 794 print s "/16777216"; next
pascal@20458 795 }
pascal@20458 796 if (args[2] % 65536 == 0) {
pascal@20546 797 sub(/dword/,"word",s)
pascal@20543 798 sub(/\],/,"+2],",s) || sub(/,/,"+2,",s)
pascal@20458 799 print s "/65536"; next
pascal@20458 800 }
pascal@20458 801 }
pascal@20458 802 }
pascal@20458 803 if (/^ mov e.x,/) {
pascal@20458 804 split($2,args,",")
pascal@20458 805 r=args[1]
pascal@20458 806 if (args[2] == "large") { args[2] = $3 }
pascal@20458 807 if (isnum(args[2]) && args[2] % 65536 == args[2]) {
pascal@20458 808 if (args[2] % 256 == args[2] || args[2] % 256 == 0) {
pascal@20458 809 print " xor " r "," r
pascal@20458 810 if (args[2] == 0) next
pascal@20458 811 x=" mov " substr(r,2,1)
pascal@20458 812 if (args[2] % 256 == 0) {
pascal@20458 813 print x "h," args[2] "/256"
pascal@20458 814 }
pascal@20458 815 else { print x "l," args[2] }
pascal@20458 816 next
pascal@20458 817 }
pascal@20458 818 }
pascal@20458 819 }
pascal@21576 820 if (afterjmp) print ";" $0
pascal@21576 821 else print
pascal@21754 822 if (/^ jmp / || /^ call near ptr _boot_kernel/ ||
pascal@21754 823 /^ call near ptr @die$qpxzc/) afterjmp=1
pascal@20458 824 }