wok annotate linld/stuff/src/pipehole.awk @ rev 21989

fasm: build fasmarm
author Pascal Bellard <pascal.bellard@slitaz.org>
date Tue Oct 15 18:06:41 2019 +0200 (2019-10-15)
parents 6e3d30b3031f
children fcb1de9af8f7
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@21576 6 if (/^@.*:$/ || / endp$/) afterjmp=0
pascal@21791 7 if (/^ \.386p$/) is386=1
pascal@21791 8 if (file == "" && /debug S/) { file=$3; gsub(/\"/,"",file) }
pascal@21984 9 if (/debug S/) print " %PAGESIZE 1000"
pascal@21984 10 if (file == "tazboot.cpp") {
pascal@21984 11 if (/add si,2/) $0=" lodsw ; " $0
pascal@21984 12 if (/add si,4/) { print " lodsw"; $0=" lodsw ; " $0 }
pascal@21984 13 if (/add di,2/) $0=" scasw ; " $0
pascal@21989 14 if (/int argc/) istazboot=1
pascal@21989 15 if (istazboot == 1) {
pascal@21989 16 if (/push.*i$/) $0="; " $0
pascal@21989 17 if (/word ptr/) { istazboot=0; $0="; " $0 }
pascal@21989 18 }
pascal@21984 19 } # file == "tazboot.cpp"
pascal@21984 20 if (file == "linld.cpp") {
pascal@21984 21 if (/add si,2/) $0=" lodsw ; " $0
pascal@21984 22 if (/add di,2/) $0=" scasw ; " $0
pascal@21984 23 if (/bx,offset DGROUP:s@\+26/) sub(/mov/,";mov")
pascal@21984 24 if (islinld==1) {
pascal@21984 25 print "; " $0
pascal@21984 26 if (!/word ptr/) next
pascal@21984 27 islinld=0
pascal@21984 28 sub(/,word.*/,",di ; argv")
pascal@21984 29 if (/di,di/) { print "; " $0; next }
pascal@21984 30 }
pascal@21984 31 if (/^_main proc/) islinld=1
pascal@21984 32 if (/== 0x662F/) islinld=2
pascal@21984 33 if (islinld==2) {
pascal@21984 34 if (/cpuhaslm/) islinld=0
pascal@21984 35 if (/mov/) { print "; " $0; next }
pascal@21984 36 }
pascal@21984 37 if (/image\|initrd/) islinld=3
pascal@21984 38 if (islinld==3) {
pascal@21984 39 if (/bx,word ptr/) { islinld=0; print "; " $0; next }
pascal@21984 40 }
pascal@21984 41 if (/fileexist\$qpxzc/) islinld=4
pascal@21984 42 if (islinld==4) {
pascal@21984 43 if (/ax,-1/) print " mov bx,word ptr [si]"
pascal@21984 44 if (/ax,word ptr/) $0=" xchg ax,bx"
pascal@21984 45 if (/\[si\]$/) { islinld=0; print "; " $0; next }
pascal@21984 46 }
pascal@21984 47 } # file == "linld.cpp"
pascal@21791 48 if (file == "himem.cpp") {
pascal@21984 49 if (/void load_image/) ishimem=1
pascal@21791 50 if (ishimem == 1 && is386 == 0) {
pascal@21791 51 if (/si\+8\]$/ || /si\+4\]$/ || /si\+16\]$/) next
pascal@21791 52 if (/si\+6\]$/ || /si\+2\]$/ || /si\+14\]$/) sub(/mov dx,/,"les dx,d")
pascal@21791 53 if (/si\+12\],ax/ || /si\+16\],ax/ || /bp-2\],ax/) sub(/,ax/,",es")
pascal@21984 54 }
pascal@21984 55 if (ishimem == 1) {
pascal@21984 56 if (/do \{/) ishimem=2
pascal@21984 57 if (/byte ptr DGROUP:_vcpi,0/) print " mov bx,si"
pascal@21984 58 if (/bx,si/) next
pascal@21984 59 if (/sp,6/) {
pascal@21984 60 print " push si"
pascal@21984 61 print " push si"
pascal@21984 62 next
pascal@21984 63 }
pascal@21984 64 }
pascal@21984 65 if (ishimem == 2) {
pascal@21984 66 if (/movzx/) print " cwde"
pascal@21984 67 if (/bp-6/) next
pascal@21984 68 if (/storepage.bufv/) {
pascal@21984 69 print " inc ax"
pascal@21984 70 print " push ax"
pascal@21984 71 }
pascal@21984 72 if (/buf \+= size;/) {
pascal@21984 73 print " pop ax"
pascal@21984 74 }
pascal@21984 75 if (/Read error/) ishimem=0
pascal@21791 76 }
pascal@21791 77 } # file == "himem.cpp"
pascal@21791 78 if (file == "load.cpp") {
pascal@21984 79 if (/word ptr \[si\+21\],513$/) isload=11
pascal@21984 80 if (isload == 12) { # LOAD.LST
pascal@21984 81 if (/cmp/) next
pascal@21984 82 if (/jb/) isload=0
pascal@21984 83 sub(/jb/,"jcxz")
pascal@21984 84 }
pascal@21984 85 if (isload == 11) { # LOAD.LST
pascal@21984 86 if (/cmp/) {
pascal@21984 87 print " mov cx,513"
pascal@21984 88 $0=" sub cx,word ptr [si+21]"
pascal@21984 89 }
pascal@21984 90 if (/jb/) isload=12
pascal@21984 91 sub(/jb/,"ja")
pascal@21984 92 }
pascal@21757 93 sub(/DGROUP:_imgs\+65534/,"[di-2]")
pascal@21791 94 if (/short @1@366$/) isload=10
pascal@21791 95 if (isload == 10) { # LOAD.LST
pascal@21791 96 if (/^ je /) next
pascal@21791 97 if (/ptr @die\$qpxzc/) {
pascal@21791 98 $0=" jne @die@"
pascal@21791 99 isload=0
pascal@21791 100 }
pascal@21791 101 }
pascal@21791 102 if (/setup_sects == 0/) isload=9
pascal@21791 103 if (isload == 9) { # LOAD.LST
pascal@21791 104 sub(/,0/,",al")
pascal@21791 105 if (/jne/) isload=0
pascal@21791 106 }
pascal@21784 107 if (/fallback\)\[1\] == 0/) isload=8
pascal@21784 108 if (isload == 8) { # LOAD.LST
pascal@21784 109 if (/load_image/) isload=0
pascal@21784 110 else next
pascal@21784 111 }
pascal@21757 112 if (/cmd_line_ptr =/ && is386 == 0) isload=7
pascal@21757 113 if (isload == 7) { # LOAD.LST
pascal@21757 114 if (/add/ || /xor/ || /extrn/ || /N_LXLSH@/ || /cl,4/) next
pascal@21791 115 if (/enable A20 if needed/) {
pascal@21791 116 print " mov word ptr [bx+si],8000h"
pascal@21757 117 isload=0
pascal@21757 118 }
pascal@21791 119 if (/,ax/) $0=" mov bx,55"
pascal@21791 120 if (/si-463/) $0=" mov bx,-463"
pascal@21791 121 if (/si-465/) $0=" mov word ptr [bx+si-2],-23745"
pascal@21757 122 if (/,dx/) {
pascal@21757 123 print " mov cl,12"
pascal@21757 124 print " shr ax,cl"
pascal@21757 125 sub(/dx/,"ax")
pascal@21757 126 }
pascal@21757 127 }
pascal@21757 128 if (/\[0\] = m-\>fallback/) isload=6
pascal@21757 129 if (isload == 6) { # LOAD.LST
pascal@21984 130 if (/si\+2/) $0=" lodsw"
pascal@21757 131 if (/les/) sub(/bx,/,"ax,")
pascal@21757 132 if (/bx\+4/ || /es:/) {
pascal@21757 133 if (/bx\+4/) isload=0
pascal@21757 134 next
pascal@21757 135 }
pascal@21757 136 if (/si\+6/) {
pascal@21757 137 print " xchg ax,di"
pascal@21757 138 print " movsw"
pascal@21757 139 print " movsw"
pascal@21757 140 print " movsw"
pascal@21757 141 print " movsw"
pascal@21757 142 print " xchg ax,di"
pascal@21757 143 next
pascal@21757 144 }
pascal@21757 145 }
pascal@21757 146 if (/version_string = /) isload=5
pascal@21757 147 if (isload == 5) { # LOAD.LST
pascal@21757 148 sub(/ax,/,"bx,")
pascal@21757 149 if (/_version_string,/) isload=0
pascal@21757 150 if (/mov bx,ax/) next
pascal@21757 151 }
pascal@21757 152 if (/topseg\(\)>>12/) isload=4
pascal@21757 153 if (isload == 4 && is386 == 0) { # LOAD.LST
pascal@21757 154 if (/push/ || /pop/) next
pascal@21757 155 if (/ax,cs/) {
pascal@21757 156 sub(/ax,cs/,"bx,cs")
pascal@21757 157 }
pascal@21757 158 if (/dx,dx/) next
pascal@21757 159 sub(/ax,dx/,"ax,bx")
pascal@21784 160 if (/call/) {
pascal@21784 161 print " cmp ax,0fffh"
pascal@21784 162 print " jae @sys@ok"
pascal@21784 163 print " mov ax,0fffh"
pascal@21784 164 print "@sys@ok:"
pascal@21784 165 isload=400
pascal@21784 166 }
pascal@21757 167 }
pascal@21791 168 if (isload == 400) {
pascal@21791 169 if (/call/) {
pascal@21791 170 print " extrn N_LXLSH@4:near"
pascal@21791 171 sub(/N_LXLSH@/,"N_LXLSH@4")
pascal@21791 172 }
pascal@21757 173 sub(/,0/,",dh")
pascal@21791 174 if (/_base_himem\+2/ || /pop/ || /push/) next
pascal@21791 175 if (/_base_himem$/) {
pascal@21791 176 sub(/mov dx,/,"les dx,d")
pascal@21791 177 isload++
pascal@21791 178 }
pascal@21791 179 }
pascal@21791 180 if (isload == 401) {
pascal@21791 181 sub(/,ax/,",es")
pascal@21791 182 if (/load_image/) isload=0
pascal@21757 183 }
pascal@21757 184 if (isload == 4 && is386) { # LOAD.LST
pascal@21757 185 sub(/dx,cs/,"edx,cs")
pascal@21757 186 sub(/eax/,"edx")
pascal@21784 187 if (/shl/) {
pascal@21784 188 print " mov ax,0fffh"
pascal@21784 189 print " cmp dx,ax"
pascal@21784 190 print " jae @sys@ok"
pascal@21784 191 print " xchg ax,dx"
pascal@21784 192 print "@sys@ok:"
pascal@21784 193 }
pascal@21757 194 sub(/ax,9/,"dx,9")
pascal@21758 195 if (/,0$/) sub(/,0/,",dh")
pascal@21757 196 if (/movzx/) next
pascal@21757 197 if (/fallback = base_himem/) { isload=0 }
pascal@21757 198 }
pascal@21754 199 if (/void load_initrd\(\)/) isload=3
pascal@21754 200 if (isload == 3) { # LOAD.LST
pascal@21754 201 if(/push di/ || /pop di/) next
pascal@21754 202 sub(/\[di/,"[bx")
pascal@21754 203 sub(/\di,/,"bx,")
pascal@21754 204 }
pascal@21750 205 if (/vid_mode = vid_mode/) isload=2
pascal@21750 206 if (isload == 2) { # LOAD.LST
pascal@21750 207 sub(/,0/,""); sub(/cmp /,"mov cx,")
pascal@21750 208 sub(/je/,"jcxz")
pascal@21750 209 if (/ax,word/) next
pascal@21750 210 sub(/,ax/,",cx")
pascal@21757 211 if (/version_string/ || /starting linux 1\.3\.73/) isload=0
pascal@21750 212 }
pascal@21791 213 if (/Not a kernel/ || /_rm_size=0x200/ || /heap_top = _rm_buf/) isload=1
pascal@21750 214 if (isload == 1) { # LOAD.LST
pascal@21791 215 if (/ptr .die\$qpxzc/) $0="@die@:\n" $0
pascal@21729 216 if (/mov al,byte ptr/ && is386) {
pascal@21729 217 print " movzx eax,byte ptr [si]"
pascal@21729 218 next
pascal@21729 219 }
pascal@21791 220 if (is386 == 0) {
pascal@21791 221 if (/di-5\],ax/) print " cwd"
pascal@21791 222 sub(/,0$/,",dx")
pascal@21791 223 }
pascal@21729 224 if (/ax,word ptr/) next
pascal@21729 225 if (/^ call/) isload=0
pascal@21729 226 }
pascal@21791 227 } # file == "load.cpp"
pascal@21791 228 if (file == "iso9660.cpp") {
pascal@21791 229 if (/<< SECTORBITS/) isiso=9
pascal@21791 230 if (isiso == 9) { # ISO9660.LST
pascal@21791 231 if (/dx,/) next
pascal@21791 232 sub(/mov ax,/,"les ax,d")
pascal@21791 233 if (/^ call/) {
pascal@21791 234 print " extrn N_LXLSH@ES:near"
pascal@21791 235 sub(/N_LXLSH@/,"N_LXLSH@ES")
pascal@21791 236 isiso=0
pascal@21791 237 }
pascal@21791 238 }
pascal@21791 239 if (/filesize =/) isiso=8
pascal@21791 240 if (isiso == 8) { # ISO9660.LST
pascal@21791 241 if (/ax,/) next
pascal@21791 242 sub(/mov dx,/,"les dx,d")
pascal@21791 243 sub(/,ax/,",es")
pascal@21791 244 if (/filemod/) isiso=0
pascal@21791 245 }
pascal@21754 246 if (/CD001/) isiso=7
pascal@21754 247 if (isiso == 7) { # ISO9660.LST
pascal@21754 248 sub(/mov ax,-1/,"dec ax")
pascal@21754 249 if (/jmp/) isiso=0
pascal@21754 250 }
pascal@21754 251 if (/int len =/) isiso=6
pascal@21754 252 if (isiso == 6) { # ISO9660.LST
pascal@21754 253 if (/dx,ax/) next
pascal@21754 254 sub(/ax/,"dx")
pascal@21754 255 sub(/cx,di/,"bx,di")
pascal@21754 256 sub(/cx,dx/,"bx,ax")
pascal@21754 257 sub(/di,dx/,"di,ax")
pascal@21754 258 if (/while/) isiso=2
pascal@21754 259 }
pascal@21754 260 if (/entrysize =/) isiso=5
pascal@21754 261 if (isiso == 5) { # ISO9660.LST
pascal@21754 262 if (/ax,ax/) next
pascal@21754 263 sub(/ax/,"cx")
pascal@21754 264 sub(/je/,"jcxz")
pascal@21754 265 if (/return/) isiso=0
pascal@21754 266 }
pascal@21735 267 if (/x->curdirsize == 0xFFFF/) isiso=4
pascal@21735 268 if (isiso == 4) { # ISO9660.LST
pascal@21754 269 sub(/DGROUP:_isostate\+18/,"[si+18]")
pascal@21754 270 sub(/DGROUP:_isostate\+20/,"[si+20]")
pascal@21747 271 if (/goto restarted/) isiso=0
pascal@21735 272 }
pascal@21791 273 } # file == "iso9660.cpp"
pascal@21791 274 if (file == "iso9660.cpp" || file == "tazboot.cpp") {
pascal@21754 275 if (/do s\+\+; while/) isiso=3
pascal@21801 276 if (/for \(p = s; \*s && \*s \!=/) isiso=3 # tazboot/main
pascal@21750 277 if (isiso == 3) { # ISO9660.LST, TAZBOOT.LST
pascal@21754 278 sub(/cmp byte ptr \[.i\]/,"sub al")
pascal@21754 279 if (/mov byte ptr \[bp-5\],al/) $0=" push ax"
pascal@21754 280 if (/mov al,byte ptr \[bp-5\]/) $0=" pop ax"
pascal@21754 281 if (/inc /) { r=$2; print; next }
pascal@21754 282 if (/al,0/) print " mov al,[" r "]"
pascal@21754 283 if (/al,byte ptr/) sub(/mov/,"xchg")
pascal@21754 284 if (/byte ptr \[.*\],0/) next
pascal@21791 285 if (/jmp/) {
pascal@21791 286 print " mov bx,si"
pascal@21791 287 $0=" db 0A8h ; test al,xx instead of " $0
pascal@21791 288 }
pascal@21754 289 if (/word ptr \[bp-4\]/) next
pascal@21754 290 if (/\) s\+\+;/ || /\],-1/) isiso=0
pascal@21735 291 }
pascal@21791 292 } # file == "iso9660.cpp" || file == "tazboot.cpp"
pascal@21791 293 if (file == "iso9660.cpp") {
pascal@21735 294 if (/endname = NULL/) isiso=2
pascal@21735 295 if (isiso == 2) { # ISO9660.LST
pascal@21735 296 if (/mov bx,cx/) next
pascal@21735 297 gsub(/cx/,"bx")
pascal@21754 298 sub(/DGROUP:_isostate\+35/,"[si+35]")
pascal@21735 299 }
pascal@21735 300 if (/const char \*n = name/) isiso=1
pascal@21735 301 if (isiso == 1) { # ISO9660.LST
pascal@21735 302 if ((/mov word ptr \[si\+32\],ax/ ) ||
pascal@21754 303 (/mov ax,word ptr \[si\+2\]/) ||
pascal@21735 304 (/bx,word ptr \[si\+32\]/) || (/ax,dx/)) next
pascal@21729 305 if (/dx,/) sub(/dx/,"ax")
pascal@21754 306 if ((/sub ax,word ptr \[si\+2\]/) ||
pascal@21754 307 (/\[si\+16\]/) || (/ax,di/)) sub(/ax/,"bx")
pascal@21754 308 if (/add word ptr \[si\+32\],ax/) $0=" add bx,word ptr [si+16]"
pascal@21735 309 if (/al,/ || /,al/) sub(/al/,"cl")
pascal@21754 310 if (/cmp byte ptr \[si\+34\],0/) $0=" or cl,cl"
pascal@21735 311 if (/jne @@0$/) next
pascal@21735 312 if (/jmp @3@58$/) $0=" je @3@58"
pascal@21754 313 sub(/mov ax,-1/,"dec ax")
pascal@21754 314 }
pascal@21791 315 } # file == "iso9660.cpp"
pascal@21754 316 if (/endp/) { xlabel = ""; goto2=0 }
pascal@21801 317 if (/isoopen\(s\+7\)/ && xlabel == "") goto2=1 # tazboot/bootiso
pascal@21801 318 if (/_vid_mode,ax/ && xlabel == "") goto2=1 # tazboot/main
pascal@21801 319 if (/_initrd_name,si/ && xlabel == "") goto2=1 # tazboot/main
pascal@21801 320 if (/_base_himem\+2,/ && xlabel == "@") goto2=1 # tazboot/bootiso tazboot/main
pascal@21801 321 if (/DGROUP:_skip_alloc/ && xlabel == "@") goto2=1 # tazboot/bootiso tazboot/main
pascal@21754 322 if (/puts\(cmdline\)/ && xlabel == "@@") goto2=1
pascal@21754 323 if (goto2 == 1 && /jmp/) { # TAZBOOT.LST && LINLD.LST
pascal@21754 324 print $NF xlabel "@:"
pascal@21754 325 label=$NF
pascal@21754 326 }
pascal@21754 327 if (goto2 > 0 && label == $NF) {
pascal@21754 328 $0=$0 xlabel
pascal@21754 329 if (goto2++ == 1) xlabel=xlabel "@"
pascal@21754 330 }
pascal@21801 331 if (file == "tazboot.cpp" && /close\(x/) isotazboot=16
pascal@21801 332 if (isotazboot == 160) { # TAZBOOT.LST
pascal@21801 333 $0="; " $0
pascal@21801 334 if (/ret/) isotazboot=0
pascal@21801 335 }
pascal@21801 336 if (isotazboot == 16) { # TAZBOOT.LST
pascal@21801 337 if (/@.@/) {
pascal@21801 338 isotazboot=160
pascal@21801 339 next
pascal@21801 340 }
pascal@21801 341 }
pascal@21801 342 if (file == "tazboot.cpp" && /jne @@2/) isotazboot=15
pascal@21801 343 if (isotazboot == 15) { # TAZBOOT.LST
pascal@21801 344 if (/@.@/) {
pascal@21801 345 print " pop di"
pascal@21801 346 print " pop si"
pascal@21801 347 print " mov sp,bp"
pascal@21801 348 print " pop bp"
pascal@21801 349 print " ret"
pascal@21801 350 next
pascal@21801 351 }
pascal@21801 352 if (/skip_alloc/) isotazboot=0
pascal@21801 353 }
pascal@21791 354 if (/if\(\*s>=/) isotazboot=14
pascal@21791 355 if (isotazboot == 14) { # LINLD.LST
pascal@21791 356 if (/jmp/) {
pascal@21791 357 $0=" db 0A9h ; test ax,xxxx instead of " $0
pascal@21791 358 isotazboot=0
pascal@21791 359 }
pascal@21791 360 }
pascal@21801 361 if (file == "tazboot.cpp" && /; s \+= 4/) isotazboot=13 # tazboot/main
pascal@21791 362 if (isotazboot == 13) { # TAZBOOT.LST
pascal@21791 363 if (/si,4/) $0=" lea bx,[si+4]"
pascal@21791 364 if (/bx,si/) next
pascal@21791 365 if (/DGROUP:_topmem/ || /set_iso/) isotazboot=0
pascal@21791 366 }
pascal@21801 367 if (file == "tazboot.cpp" && /case 0x652F:/) isotazboot=12 # tazboot/main
pascal@21791 368 if (isotazboot == 12) { # TAZBOOT.LST
pascal@21791 369 sub(/si,word/,"bx,word")
pascal@21791 370 if (/short/) isotazboot=0
pascal@21791 371 }
pascal@21801 372 if (/return load_kernel/) isotazboot=11 # tazboot/isokernel
pascal@21791 373 if (isotazboot == 11) { # TAZBOOT.LST
pascal@21791 374 sub(/call/,"jmp")
pascal@21791 375 if (/ret/ || /pop/) next
pascal@21791 376 if (/endp/) isotazboot=0
pascal@21791 377 }
pascal@21801 378 if (/cmdline=s\+=3/ || /magic \!= 0/ || /&root_dev =/) { isotazboot=10; j="" } # ,tazboot/bootiso,tazboot/main
pascal@21754 379 if (isotazboot == 10) { # TAZBOOT.LST && LINLD.LST
pascal@21754 380 if (/je/ || /jne/) { j=$1; next }
pascal@21754 381 if (/jmp/) {
pascal@21754 382 if (j=="jne") sub(/jmp/,"je")
pascal@21754 383 else if (j=="je") sub(/jmp/,"jne")
pascal@21754 384 isotazboot=0
pascal@21754 385 }
pascal@21754 386 }
pascal@21801 387 if (/static const unsigned long initrddesc = 18L/) isotazboot=9 # tazboot/bootiso
pascal@21754 388 if (isotazboot == 9) { # TAZBOOT.LST
pascal@21754 389 if (/,0/) {
pascal@21754 390 split($4,y,",")
pascal@21754 391 print " mov bx,offset " y[1]
pascal@21801 392 sub(/DGROUP:.*,/,"[bx],")
pascal@21754 393 }
pascal@21801 394 if (/mov/ && $3 == y[1]) next
pascal@21801 395 if (/je/) next
pascal@21801 396 if (/jmp/) sub(/jmp/,"jne")
pascal@21801 397 sub(/ax,offset/,"bx,offset")
pascal@21801 398 if (/bx,ax/) { isotazboot=0; next }
pascal@21729 399 }
pascal@21801 400 if (/isoopen\(s\+7\) != -1/) isotazboot=8 # tazboot/bootiso
pascal@21750 401 if (isotazboot == 8) { # TAZBOOT.LST
pascal@21801 402 sub(/\[bx/,"[si")
pascal@21801 403 if (/bx,si/) next
pascal@21750 404 if (/magic/) isotazboot=0
pascal@21750 405 }
pascal@21801 406 if (/isoopen\(\"bzImage\"\)/) isotazboot=7 # tazboot/bootiso
pascal@21750 407 if (isotazboot == 7) { # TAZBOOT.LST
pascal@21791 408 if (/inc/ || /,al/) next
pascal@21791 409 if (/al,byte/) sub (/mov al,/,"inc ")
pascal@21750 410 if (/isokernel/) isotazboot=0
pascal@21750 411 }
pascal@21801 412 if (/if \(c\) s\+\+;/) isotazboot=6 # tazboot/main
pascal@21750 413 if (isotazboot == 6) { # TAZBOOT.LST
pascal@21750 414 if (/cmp/) {
pascal@21750 415 $0=" cmp al,0"
pascal@21750 416 isotazboot=0
pascal@21750 417 }
pascal@21750 418 }
pascal@21801 419 if (/static void next_chunk/) isotazboot=5 # tazboot/next_chunk
pascal@21791 420 if (isotazboot == 501) {
pascal@21791 421 if (/ret/) {
pascal@21791 422 print "@1@86:"
pascal@21791 423 isotazboot=0
pascal@21791 424 }
pascal@21791 425 }
pascal@21754 426 if (isotazboot == 5 || isotazboot == 500) { # TAZBOOT.LST
pascal@21750 427 if (/cx,ax/) $0=" xchg ax,bx"
pascal@21754 428 if (/ax,word ptr \[si\+28\]/ && isotazboot == 500) next
pascal@21750 429 if (/bx,cx/) next
pascal@21754 430 if (/push/ || /pop/ || /bp,sp/ || /si,/) next
pascal@21754 431 sub(/\[si/,"[di")
pascal@21754 432 if (/initrd_info/) isotazboot=500
pascal@21791 433 if (/bx\+6\]/) next
pascal@21791 434 if (/bx\+4\]/) sub(/mov dx,/,"les dx,d")
pascal@21791 435 sub(/di\+24\],ax/,"di+24],es")
pascal@21791 436 sub(/call/,"jmp")
pascal@21791 437 if (/ret/ || /pop/ || /^@1@86:/) next
pascal@21791 438 if (/_isostate\+14/) next
pascal@21791 439 if (/_isostate\+12/) {
pascal@21791 440 sub(/mov ax,/,"les ax,d")
pascal@21791 441 print
pascal@21791 442 print " mov dx,es"
pascal@21791 443 next
pascal@21791 444 }
pascal@21791 445 if (/ax,-4/) isotazboot++
pascal@21750 446 }
pascal@21801 447 if (/0x7FF0/) isotazboot=4 # tazboot/bootiso
pascal@21750 448 if (isotazboot == 4) { # TAZBOOT.LST
pascal@21750 449 if (/ax,word ptr/) {
pascal@21750 450 print " mov ax,32752"
pascal@21754 451 print " cwd"
pascal@21750 452 sub(/mov/,"sub")
pascal@21750 453 }
pascal@21750 454 if (/bx,/ || /cx,/ || /dx,/) next
pascal@21754 455 sub(/,0/,",dx")
pascal@21754 456 sub(/,bx/,",dx")
pascal@21750 457 sub(/,cx/,",ax")
pascal@21754 458 if (/@addinitrd\$qv/) isotazboot=0
pascal@21750 459 }
pascal@21801 460 if (/c = x->filename/) isotazboot=3 # tazboot/bootiso
pascal@21750 461 if (isotazboot == 3) { # TAZBOOT.LST
pascal@21750 462 if (/ax,/) $0=" xchg ax,bx"
pascal@21750 463 if (/\]$/) next
pascal@21750 464 if (/@strcpy\$qpxzct1/) isotazboot=0
pascal@21750 465 }
pascal@21801 466 if (/base_himem = memtop/) isotazboot=2 # tazboot/bootiso
pascal@21750 467 if (isotazboot == 2) { # TAZBOOT.LST
pascal@21801 468 if (/word ptr \[si\+2\],0/) {
pascal@21754 469 print s; hold=0
pascal@21801 470 print " mov bx,word ptr [si+2]"
pascal@21752 471 $0=" or bx,bx"
pascal@21752 472 }
pascal@21752 473 if (/\[bp-4\],ax/) sub(/ax/,"bx")
pascal@21801 474 if (/ax,word ptr \[si\+2\]/ || /bx,ax/) next
pascal@21791 475 if (/_base_himem\+2,dx/) {
pascal@21791 476 print " mov bx,offset DGROUP:_base_himem+2"
pascal@21791 477 }
pascal@21791 478 sub(/DGROUP:_base_himem,/,"[bx-2],")
pascal@21791 479 sub(/DGROUP:_base_himem\+2,/,"[bx],")
pascal@21791 480 sub(/DGROUP:_base_himem\+3,/,"[bx+1],")
pascal@21750 481 if (/@strcmp\$qpxzct1/) isotazboot=0
pascal@21750 482 }
pascal@21801 483 if (/static void addinitrd/) isotazboot=100 # tazboot/addinitrd
pascal@21751 484 if (isotazboot == 100) { # TAZBOOT.LST
pascal@21751 485 if (/cx,ax/) {
pascal@21754 486 print " mov si,offset _isostate+8"
pascal@21757 487 print " push ds"
pascal@21757 488 print " pop es"
pascal@21754 489 print " xchg ax,di"
pascal@21751 490 print " movsw"
pascal@21751 491 print " movsw"
pascal@21751 492 print " movsw"
pascal@21751 493 print " movsw"
pascal@21754 494 $0=" xchg ax,di"
pascal@21751 495 }
pascal@21751 496 if (/mov/ && !/si/ && !/cl/) next
pascal@21754 497 if (/void load_initrds/) isotazboot=101
pascal@21751 498 }
pascal@21754 499 if (isotazboot == 101 || isotazboot == 102) { # TAZBOOT.LST
pascal@21754 500 sub(/\[si/,"[di"); sub(/si,/,"di,"); sub(/si$/,"di")
pascal@21754 501 sub(/DGROUP:_imgs\+38$/,"[di+38-32]")
pascal@21754 502 sub(/DGROUP:_imgs\+40$/,"[di+40-32]")
pascal@21754 503 if (/isofd/) isotazboot=102
pascal@21754 504 if (/push/ && isotazboot == 102) next
pascal@21754 505 if (/pop/ && isotazboot == 102) next
pascal@21754 506 if (/load_initrd/) isotazboot=101
pascal@21754 507 if (/isokernel/) isotazboot=103
pascal@21754 508 }
pascal@21754 509 if (isotazboot > 102) { # TAZBOOT.LST
pascal@21754 510 if (/push/ || /pop/) next
pascal@21754 511 sub(/\[si/,"[bx")
pascal@21750 512 sub(/si,/,"bx,")
pascal@21750 513 if (/static void bootiso/) isotazboot=0
pascal@21750 514 }
pascal@21729 515 if (wascall) {
pascal@21729 516 if (rcall != "") {
pascal@21729 517 if (/,ax$/) print " mov " rcall ",ax"
pascal@21729 518 else print " xchg ax," rcall
pascal@21729 519 wascall=0
pascal@21729 520 }
pascal@21729 521 else if (/^ mov .i,ax$/) {
pascal@21729 522 split($2,y,",")
pascal@21729 523 rcall=y[1]
pascal@21729 524 next
pascal@21729 525 }
pascal@21729 526 else wascall=0
pascal@21729 527 }
pascal@21729 528 if (/^ call /) { wascall=1; rcall="" }
pascal@20458 529 if (hold == 0) {
pascal@20458 530 s=$0
pascal@20534 531 if (/^ mov .[ix],bx$/ || /^ mov .[ix],.i$/) {
pascal@20543 532 r=$2; kept=0
pascal@20458 533 hold=1; split($2,regs,","); next
pascal@20458 534 }
pascal@21729 535 if (/^ inc e?.[ixhl]/ || /^ dec e?.[ixhl]/) {
pascal@20458 536 hold=2; r=$2; next
pascal@20458 537 }
pascal@20458 538 if (/^ mov [abcds][ix],/ && ! /,.s/) {
pascal@20458 539 hold=3; split($2,regs,","); next
pascal@20458 540 }
pascal@20458 541 if (/^ movzx eax,ax$/) { hold=4; next }
pascal@20544 542 if (/^ cmp word ptr/ || /^ cmp [bcd]x,/) {
pascal@20543 543 split($0,regs,",")
pascal@20543 544 if (isnum(regs[2]) && regs[2] != 0 &&
pascal@20543 545 (regs[2] % 256) == 0) {
pascal@20549 546 hold=5; next
pascal@20543 547 }
pascal@20543 548 }
pascal@20630 549 if (/^ mov ax,cs$/) { hold=6; kept=0; next }
pascal@20630 550 if (/^ mov cl,4$/) { hold=7; next }
pascal@20630 551 if (/^ cmp word ptr DGROUP:.*,0$/) {
pascal@20630 552 hold=8; split($2,regs,","); next
pascal@20630 553 }
pascal@20634 554 if (/^ cbw/) { hold=11; kept=0; next }
pascal@20634 555 if (/^ add [abcds][ix],2$/) {
pascal@20634 556 split($2,regs,","); hold=12; next
pascal@20634 557 }
pascal@20634 558 if (/^ sub [abcds][ix],2$/) {
pascal@20634 559 split($2,regs,","); hold=13; next
pascal@20634 560 }
pascal@21569 561 if (/^ push dx$/) {
pascal@21569 562 hold=14; next;
pascal@21569 563 }
pascal@20458 564 }
pascal@20458 565 else if (hold == 1) {
pascal@20543 566 if (/^ ;/) { line[kept++]=$0; next }
pascal@20458 567 hold=0; split($2,args,","); op=""
pascal@20458 568 if ($1 == "add") op="+"
pascal@20458 569 if ($1 == "sub") op="-"
pascal@20751 570 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 571 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20543 572 if (op != "" && regs[1] == args[1]) {
pascal@20543 573 if (isnum(args[2])) {
pascal@20630 574 for (i = kept++; i > 0; i--) line[i] = line[i-1]
pascal@20630 575 line[0] = "\tlea\t" regs[1] ",[" regs[2] op args[2] "]"
pascal@20630 576 hold=10; next
pascal@20543 577 }
pascal@20543 578 line[kept++]=$0
pascal@20543 579 hold=1
pascal@20458 580 next
pascal@20458 581 }
pascal@20520 582 if (/^ pop [ds]i/ && regs[2] ~ /^[ds]i$/) {
pascal@20520 583 print " xchg " r
pascal@20520 584 }
pascal@20543 585 else print s
pascal@20543 586 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20458 587 }
pascal@20458 588 else if (hold == 2) {
pascal@21729 589 split($0,args,",")
pascal@21729 590 if (/^ mov / && r == args[2]) { print s; s=$0; next }
pascal@21729 591 split($2,args,",")
pascal@21729 592 hold=0; print s
pascal@20458 593 if ($1 == "or" && r == args[1] && r == args[2]) next # don't clear C ...
pascal@20458 594 }
pascal@20458 595 else if (hold == 3) {
pascal@20458 596 hold=0
pascal@21576 597 if (/^ call / && regs[2] == "ax") s=" xchg ax," regs[1]
pascal@20542 598 if (/^ add [abcds][ix],/) {
pascal@20458 599 split($2,regs2,",")
pascal@20458 600 if (regs[1] == regs2[1] && (regs2[2] == "offset" || isnum(regs2[2]))) {
pascal@20549 601 t=$0; sub(/mov/,$1,s); sub(/add/,"mov",t)
pascal@20458 602 print t; print s; next
pascal@20458 603 }
pascal@20458 604 }
pascal@20458 605 print s
pascal@20458 606 }
pascal@20458 607 else if (hold == 4) {
pascal@20458 608 hold=0
pascal@20458 609 if (/^ push eax$/) {
pascal@20458 610 print " push 0"; print " push ax"; next
pascal@20458 611 } else { print s }
pascal@20458 612 }
pascal@20543 613 else if (hold == 5) {
pascal@20543 614 hold=0
pascal@20543 615 if ($1 == "jae" || $1 == "jb") {
pascal@20544 616 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 617 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20543 618 s = s "/256"
pascal@20543 619 }
pascal@20543 620 print s
pascal@20543 621 }
pascal@20630 622 else if (hold == 6) {
pascal@20630 623 if (($1 == "and" || $1 == "add") && $2 ~ /^ax,/) {
pascal@20630 624 line[kept++]=$0
pascal@20630 625 next
pascal@20630 626 }
pascal@20630 627 p=$0
pascal@20630 628 if (/^ movzx eax,ax$/) {
pascal@20630 629 s=" mov eax,cs"; p=""
pascal@20630 630 }
pascal@20630 631 print s
pascal@20630 632 for (i = 0; i < kept; i++) print line[i]; kept=0
pascal@20630 633 if (p != "") print p
pascal@20630 634 hold=0; next
pascal@20630 635 }
pascal@20630 636 else if (hold == 7) {
pascal@20458 637 hold=0
pascal@20520 638 if (/^ call near ptr N_LXURSH@$/) {
pascal@20520 639 print " extrn N_LXURSH@4:near"
pascal@20520 640 print " call near ptr N_LXURSH@4"
pascal@20520 641 next
pascal@20520 642 }
pascal@20528 643 if (/^ call near ptr N_LXLSH@$/) {
pascal@20528 644 print " extrn N_LXLSH@4:near"
pascal@20528 645 print " call near ptr N_LXLSH@4"
pascal@20528 646 next
pascal@20528 647 }
pascal@20520 648 print s
pascal@20458 649 }
pascal@20630 650 else if (hold == 8) {
pascal@20630 651 if ($1 == "je" || $1 == "jne") { p=$0; hold=9; next }
pascal@20630 652 hold=0
pascal@20630 653 print s
pascal@20630 654 }
pascal@20630 655 else if (hold == 9) {
pascal@20630 656 hold=0; split($2,args,",")
pascal@20630 657 if (/^ mov ax,/ && args[2] == regs[1]) {
pascal@20630 658 print; print " or ax,ax"; print p; next
pascal@20630 659 }
pascal@20630 660 print s; print p;
pascal@20630 661 }
pascal@20630 662 else if (hold == 10) {
pascal@20751 663 split($2,args,","); op=""
pascal@20751 664 if ($1 == "add") op="+"
pascal@20751 665 if ($1 == "sub") op="-"
pascal@20751 666 if ($1 == "inc") { op="+"; args[2]="1"; }
pascal@20751 667 if ($1 == "dec") { op="-"; args[2]="1"; }
pascal@20751 668 if (op != "" && isnum(args[2])) {
pascal@20751 669 split(line[0],reg,",")
pascal@20751 670 if (substr(reg[1],length(reg[1])-1,2) == args[1]) {
pascal@20751 671 line[0] = substr(line[0],1,length(line[0])-1) op args[2] "]"
pascal@20751 672 next
pascal@20751 673 }
pascal@20751 674 }
pascal@20630 675 hold=0
pascal@20630 676 if (/^ mov [sd]i,ax$/) {
pascal@20630 677 split($2,args,",")
pascal@20630 678 for (i = 0; i < kept; i++) {
pascal@20630 679 sub(/ax/,args[1],line[i]); print line[i]
pascal@20630 680 }
pascal@20630 681 next
pascal@20630 682 }
pascal@20630 683 for (i = 0; i < kept; i++) print line[i]
pascal@20630 684 }
pascal@20634 685 else if (hold == 11) {
pascal@20634 686 if (/^ inc ax$/ || /^ dec ax$/) {
pascal@20634 687 line[kept++]=$0; next
pascal@20634 688 }
pascal@20634 689 split($2,args,",")
pascal@20634 690 if (/^ mov cl,/) {
pascal@20634 691 split($2,args,",")
pascal@20634 692 if (args[2] >= 8) {
pascal@20634 693 line[kept++]=$0; next
pascal@20634 694 }
pascal@20634 695 }
pascal@20634 696 if (!/^ shl ax,/ || (args[2] != "cl" && args[2] < 8)) {
pascal@20634 697 print " cbw "
pascal@20634 698 }
pascal@20634 699 for (i = 0; i < kept; i++) print line[i]
pascal@20634 700 hold=kept=0
pascal@20634 701 }
pascal@20634 702 else if (hold == 12) {
pascal@20634 703 hold=0
pascal@20634 704 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 705 print " inc " regs[1]
pascal@20634 706 print " inc " regs[1]
pascal@20634 707 }
pascal@20634 708 else print " add " regs[1] ",2"
pascal@20634 709 }
pascal@20634 710 else if (hold == 13) {
pascal@20634 711 hold=0
pascal@20634 712 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
pascal@20634 713 print " dec " regs[1]
pascal@20634 714 print " dec " regs[1]
pascal@20634 715 }
pascal@20634 716 else print " sub " regs[1] ",2"
pascal@20634 717 }
pascal@21569 718 else if (hold == 14) {
pascal@21569 719 if (/^ push ax$/) { hold++; next; }
pascal@21569 720 print " push dx";
pascal@21569 721 hold=0;
pascal@21569 722 }
pascal@21569 723 else if (hold == 15) {
pascal@21569 724 if (/^ pop eax$/) { hold++; next; }
pascal@21569 725 print " push dx";
pascal@21569 726 print " push ax";
pascal@21569 727 hold=0;
pascal@21569 728 }
pascal@21569 729 else if (hold == 16) {
pascal@21569 730 hold=0;
pascal@21569 731 if (/^ shr eax,16$/) { print " xchg ax,dx"; next; }
pascal@21569 732 print " push dx";
pascal@21569 733 print " push ax";
pascal@21569 734 print " pop eax";
pascal@21569 735 }
pascal@21569 736 else if (hold == 17) {
pascal@21569 737 hold=0;
pascal@21569 738 if (/^ cmp ax,-1$/) { print " inc ax"; next; }
pascal@21569 739 }
pascal@21576 740 if (/^ call near ptr @fileexist\$/ || # return boolean :
pascal@21576 741 /^ call near ptr @isoreaddir\$/ || # 0=true, -1=false
pascal@21628 742 /^ call near ptr @isoreset\$/ ||
pascal@21628 743 /^ call near ptr @isoopen\$/ ||
pascal@21628 744 /^ call near ptr @isoreadsector\$/ ||
pascal@21628 745 /^ call near ptr @strhead\$/ ||
pascal@21576 746 /^ call near ptr @argstr\$/ ||
pascal@21576 747 /^ call near ptr @argnum\$/) { print; hold=17; next; }
pascal@20458 748 s=$0
pascal@20458 749 # These optimisation may break ZF or CF
pascal@20485 750 if (/^ sub sp,2$/) { print " push ax"; next }
pascal@20485 751 if (/^ sub sp,4$/) { print " push ax"; print " push ax"; next }
pascal@20485 752 if (/^ add sp,4$/) { print " pop cx"; print " pop cx"; next }
pascal@20458 753 if (/^ mov d*word ptr .*,0$/ || /^ mov dword ptr .*,large 0$/) {
pascal@20458 754 sub(/mov/,"and",s); print s; next # slower
pascal@20458 755 }
pascal@20458 756 if (/^ mov d*word ptr .*,-1$/ || /^ mov dword ptr .*,large -1$/) {
pascal@20458 757 sub(/mov/,"or",s); print s; next # slower
pascal@20458 758 }
pascal@20458 759 if (/^ or .*,0$/ || /^ and .*,-1$/) next
pascal@20458 760 if (/^ or [abcd]x,/) {
pascal@20458 761 split($2,args,",")
pascal@20458 762 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 763 print " or " substr(args[1],1,1) "l," args[2]; next
pascal@20458 764 }
pascal@20458 765 }
pascal@20458 766 if (/^ and [abcd]x,/) {
pascal@20458 767 split($2,args,",")
pascal@20459 768 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 769 print " and " substr(args[1],1,1) "l," args[2]; next
pascal@20458 770 }
pascal@20458 771 }
pascal@20458 772 if (/^ or e[abcd]x,/) {
pascal@20458 773 split($2,args,",")
pascal@20458 774 if (args[2] == "large") { args[2] = $3 }
pascal@20458 775 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
pascal@20458 776 print " or " substr(args[1],2,1) "l," args[2]; next
pascal@20458 777 }
pascal@20458 778 }
pascal@20458 779 if (/^ and e[abcd]x,/) {
pascal@20458 780 split($2,args,",")
pascal@20458 781 if (args[2] == "large") { args[2] = $3 }
pascal@20459 782 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
pascal@20458 783 print " and " substr(args[1],2,1) "l," args[2]; next
pascal@20458 784 }
pascal@20458 785 }
pascal@20458 786 if (/^ or e[abcds][ix],/) {
pascal@20458 787 split($2,args,",")
pascal@20458 788 if (args[2] == "large") { args[2] = $3 }
pascal@20458 789 if (isnum(args[2]) && args[2] >= 0 && args[2] < 65536) {
pascal@20458 790 print " or " substr(args[1],2) "," args[2]; next
pascal@20458 791 }
pascal@20458 792 }
pascal@20458 793 if (/^ and e[abcds][ix],/) {
pascal@20458 794 split($2,args,",")
pascal@20458 795 if (args[2] == "large") { args[2] = $3 }
pascal@20459 796 if (isnum(args[2]) && args[2] >= -65536 && args[2] < 0) {
pascal@20458 797 print " and " substr(args[1],2) "," args[2]; next
pascal@20458 798 }
pascal@20458 799 }
pascal@20543 800 if (/^ add word ptr/ || /^ sub word ptr/ ||
pascal@20544 801 /^ add [bcd]x,/ || /^ sub [bcd]x,/) {
pascal@20542 802 split($0,args,",")
pascal@20542 803 if (isnum(args[2]) && (args[2] % 256 == 0)) {
pascal@20544 804 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
pascal@20543 805 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
pascal@20542 806 print s "/256"; next
pascal@20542 807 }
pascal@20542 808 }
pascal@20546 809 if (/^ add dword ptr/ || /^ sub dword ptr/) {
pascal@20458 810 split($0,args,",")
pascal@20543 811 if (args[2] == "large") { args[2] = $3 }
pascal@20458 812 if (isnum(args[2])) {
pascal@20546 813 if (args[2] % 16777216 == 0) {
pascal@20546 814 sub(/dword/,"byte",s)
pascal@20543 815 sub(/\],/,"+3],",s) || sub(/,/,"+3,",s)
pascal@20458 816 print s "/16777216"; next
pascal@20458 817 }
pascal@20458 818 if (args[2] % 65536 == 0) {
pascal@20546 819 sub(/dword/,"word",s)
pascal@20543 820 sub(/\],/,"+2],",s) || sub(/,/,"+2,",s)
pascal@20458 821 print s "/65536"; next
pascal@20458 822 }
pascal@20458 823 }
pascal@20458 824 }
pascal@20458 825 if (/^ mov e.x,/) {
pascal@20458 826 split($2,args,",")
pascal@20458 827 r=args[1]
pascal@20458 828 if (args[2] == "large") { args[2] = $3 }
pascal@20458 829 if (isnum(args[2]) && args[2] % 65536 == args[2]) {
pascal@20458 830 if (args[2] % 256 == args[2] || args[2] % 256 == 0) {
pascal@20458 831 print " xor " r "," r
pascal@20458 832 if (args[2] == 0) next
pascal@20458 833 x=" mov " substr(r,2,1)
pascal@20458 834 if (args[2] % 256 == 0) {
pascal@20458 835 print x "h," args[2] "/256"
pascal@20458 836 }
pascal@20458 837 else { print x "l," args[2] }
pascal@20458 838 next
pascal@20458 839 }
pascal@20458 840 }
pascal@20458 841 }
pascal@21576 842 if (afterjmp) print ";" $0
pascal@21576 843 else print
pascal@21754 844 if (/^ jmp / || /^ call near ptr _boot_kernel/ ||
pascal@21754 845 /^ call near ptr @die$qpxzc/) afterjmp=1
pascal@20458 846 }