rev |
line source |
pascal@21754
|
1 BEGIN { hold=0; is386=0; isload=0; isiso=0; istazboot=0; wascall=0; label="none"; xlabel="" }
|
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@21729
|
7 if (/dword ptr/) is386=1
|
pascal@21757
|
8 sub(/DGROUP:_imgs\+65534/,"[di-2]")
|
pascal@21757
|
9 if (/cmd_line_ptr =/ && is386 == 0) isload=7
|
pascal@21757
|
10 if (isload == 7) { # LOAD.LST
|
pascal@21757
|
11 if (/add/ || /xor/ || /extrn/ || /N_LXLSH@/ || /cl,4/) next
|
pascal@21757
|
12 if (/,ax/) {
|
pascal@21757
|
13 sub(/ax/,"8000h")
|
pascal@21757
|
14 isload=0
|
pascal@21757
|
15 }
|
pascal@21757
|
16 if (/,dx/) {
|
pascal@21757
|
17 print " mov cl,12"
|
pascal@21757
|
18 print " shr ax,cl"
|
pascal@21757
|
19 sub(/dx/,"ax")
|
pascal@21757
|
20 }
|
pascal@21757
|
21 }
|
pascal@21757
|
22 if (/\[0\] = m-\>fallback/) isload=6
|
pascal@21757
|
23 if (isload == 6) { # LOAD.LST
|
pascal@21757
|
24 if (/si\+2/) {
|
pascal@21757
|
25 print " inc si"
|
pascal@21757
|
26 $0=" inc si"
|
pascal@21757
|
27 }
|
pascal@21757
|
28 if (/les/) sub(/bx,/,"ax,")
|
pascal@21757
|
29 if (/bx\+4/ || /es:/) {
|
pascal@21757
|
30 if (/bx\+4/) isload=0
|
pascal@21757
|
31 next
|
pascal@21757
|
32 }
|
pascal@21757
|
33 if (/si\+6/) {
|
pascal@21757
|
34 print " xchg ax,di"
|
pascal@21757
|
35 print " movsw"
|
pascal@21757
|
36 print " movsw"
|
pascal@21757
|
37 print " movsw"
|
pascal@21757
|
38 print " movsw"
|
pascal@21757
|
39 print " xchg ax,di"
|
pascal@21757
|
40 next
|
pascal@21757
|
41 }
|
pascal@21757
|
42 }
|
pascal@21757
|
43 if (/version_string = /) isload=5
|
pascal@21757
|
44 if (isload == 5) { # LOAD.LST
|
pascal@21757
|
45 sub(/ax,/,"bx,")
|
pascal@21757
|
46 if (/_version_string,/) isload=0
|
pascal@21757
|
47 if (/mov bx,ax/) next
|
pascal@21757
|
48 }
|
pascal@21757
|
49 if (/topseg\(\)>>12/) isload=4
|
pascal@21757
|
50 if (isload == 4 && is386 == 0) { # LOAD.LST
|
pascal@21757
|
51 if (/push/ || /pop/) next
|
pascal@21757
|
52 if (/ax,cs/) {
|
pascal@21757
|
53 print " cwd"
|
pascal@21757
|
54 sub(/ax,cs/,"bx,cs")
|
pascal@21757
|
55 }
|
pascal@21757
|
56 if (/dx,dx/) next
|
pascal@21757
|
57 sub(/ax,dx/,"ax,bx")
|
pascal@21757
|
58 if (/call/) isload=400
|
pascal@21757
|
59 }
|
pascal@21757
|
60 if (isload == 400 && /,0/) {
|
pascal@21757
|
61 sub(/,0/,",dh")
|
pascal@21757
|
62 isload=0
|
pascal@21757
|
63 }
|
pascal@21757
|
64 if (isload == 4 && is386) { # LOAD.LST
|
pascal@21757
|
65 sub(/dx,cs/,"edx,cs")
|
pascal@21757
|
66 sub(/eax/,"edx")
|
pascal@21757
|
67 sub(/ax,9/,"dx,9")
|
pascal@21757
|
68 if (/,0/) sub(/,0/,",dh")
|
pascal@21757
|
69 if (/movzx/) next
|
pascal@21757
|
70 if (/fallback = base_himem/) { isload=0 }
|
pascal@21757
|
71 }
|
pascal@21754
|
72 if (/void load_initrd\(\)/) isload=3
|
pascal@21754
|
73 if (isload == 3) { # LOAD.LST
|
pascal@21754
|
74 if(/push di/ || /pop di/) next
|
pascal@21754
|
75 sub(/\[di/,"[bx")
|
pascal@21754
|
76 sub(/\di,/,"bx,")
|
pascal@21754
|
77 }
|
pascal@21750
|
78 if (/vid_mode = vid_mode/) isload=2
|
pascal@21750
|
79 if (isload == 2) { # LOAD.LST
|
pascal@21750
|
80 sub(/,0/,""); sub(/cmp /,"mov cx,")
|
pascal@21750
|
81 sub(/je/,"jcxz")
|
pascal@21750
|
82 if (/ax,word/) next
|
pascal@21750
|
83 sub(/,ax/,",cx")
|
pascal@21757
|
84 if (/version_string/ || /starting linux 1\.3\.73/) isload=0
|
pascal@21750
|
85 }
|
pascal@21757
|
86 if (/_rm_size=0x200/ || /heap_top = _rm_buf/) isload=1
|
pascal@21750
|
87 if (isload == 1) { # LOAD.LST
|
pascal@21729
|
88 if (/mov al,byte ptr/ && is386) {
|
pascal@21729
|
89 print " movzx eax,byte ptr [si]"
|
pascal@21729
|
90 next
|
pascal@21729
|
91 }
|
pascal@21729
|
92 if (/ax,word ptr/) next
|
pascal@21729
|
93 if (/^ call/) isload=0
|
pascal@21729
|
94 }
|
pascal@21754
|
95 if (/CD001/) isiso=7
|
pascal@21754
|
96 if (isiso == 7) { # ISO9660.LST
|
pascal@21754
|
97 sub(/mov ax,-1/,"dec ax")
|
pascal@21754
|
98 if (/jmp/) isiso=0
|
pascal@21754
|
99 }
|
pascal@21754
|
100 if (/int len =/) isiso=6
|
pascal@21754
|
101 if (isiso == 6) { # ISO9660.LST
|
pascal@21754
|
102 if (/dx,ax/) next
|
pascal@21754
|
103 sub(/ax/,"dx")
|
pascal@21754
|
104 sub(/cx,di/,"bx,di")
|
pascal@21754
|
105 sub(/cx,dx/,"bx,ax")
|
pascal@21754
|
106 sub(/di,dx/,"di,ax")
|
pascal@21754
|
107 if (/while/) isiso=2
|
pascal@21754
|
108 }
|
pascal@21754
|
109 if (/entrysize =/) isiso=5
|
pascal@21754
|
110 if (isiso == 5) { # ISO9660.LST
|
pascal@21754
|
111 if (/ax,ax/) next
|
pascal@21754
|
112 sub(/ax/,"cx")
|
pascal@21754
|
113 sub(/je/,"jcxz")
|
pascal@21754
|
114 if (/return/) isiso=0
|
pascal@21754
|
115 }
|
pascal@21735
|
116 if (/x->curdirsize == 0xFFFF/) isiso=4
|
pascal@21735
|
117 if (isiso == 4) { # ISO9660.LST
|
pascal@21754
|
118 sub(/DGROUP:_isostate\+18/,"[si+18]")
|
pascal@21754
|
119 sub(/DGROUP:_isostate\+20/,"[si+20]")
|
pascal@21747
|
120 if (/goto restarted/) isiso=0
|
pascal@21735
|
121 }
|
pascal@21754
|
122 if (/do s\+\+; while/) isiso=3
|
pascal@21754
|
123 if (/for \(p = s; \*s && \*s \!=/) isiso=3
|
pascal@21750
|
124 if (isiso == 3) { # ISO9660.LST, TAZBOOT.LST
|
pascal@21754
|
125 sub(/cmp byte ptr \[.i\]/,"sub al")
|
pascal@21754
|
126 if (/mov byte ptr \[bp-5\],al/) $0=" push ax"
|
pascal@21754
|
127 if (/mov al,byte ptr \[bp-5\]/) $0=" pop ax"
|
pascal@21754
|
128 if (/inc /) { r=$2; print; next }
|
pascal@21754
|
129 if (/al,0/) print " mov al,[" r "]"
|
pascal@21754
|
130 if (/al,byte ptr/) sub(/mov/,"xchg")
|
pascal@21754
|
131 if (/byte ptr \[.*\],0/) next
|
pascal@21754
|
132 if (/jmp/) print " mov bx,si"
|
pascal@21754
|
133 if (/word ptr \[bp-4\]/) next
|
pascal@21754
|
134 if (/\) s\+\+;/ || /\],-1/) isiso=0
|
pascal@21735
|
135 }
|
pascal@21735
|
136 if (/endname = NULL/) isiso=2
|
pascal@21735
|
137 if (isiso == 2) { # ISO9660.LST
|
pascal@21735
|
138 if (/mov bx,cx/) next
|
pascal@21735
|
139 gsub(/cx/,"bx")
|
pascal@21754
|
140 sub(/DGROUP:_isostate\+35/,"[si+35]")
|
pascal@21735
|
141 }
|
pascal@21735
|
142 if (/const char \*n = name/) isiso=1
|
pascal@21735
|
143 if (isiso == 1) { # ISO9660.LST
|
pascal@21735
|
144 if ((/mov word ptr \[si\+32\],ax/ ) ||
|
pascal@21754
|
145 (/mov ax,word ptr \[si\+2\]/) ||
|
pascal@21735
|
146 (/bx,word ptr \[si\+32\]/) || (/ax,dx/)) next
|
pascal@21729
|
147 if (/dx,/) sub(/dx/,"ax")
|
pascal@21754
|
148 if ((/sub ax,word ptr \[si\+2\]/) ||
|
pascal@21754
|
149 (/\[si\+16\]/) || (/ax,di/)) sub(/ax/,"bx")
|
pascal@21754
|
150 if (/add word ptr \[si\+32\],ax/) $0=" add bx,word ptr [si+16]"
|
pascal@21735
|
151 if (/al,/ || /,al/) sub(/al/,"cl")
|
pascal@21754
|
152 if (/cmp byte ptr \[si\+34\],0/) $0=" or cl,cl"
|
pascal@21735
|
153 if (/jne @@0$/) next
|
pascal@21735
|
154 if (/jmp @3@58$/) $0=" je @3@58"
|
pascal@21754
|
155 sub(/mov ax,-1/,"dec ax")
|
pascal@21754
|
156 }
|
pascal@21754
|
157 if (/endp/) { xlabel = ""; goto2=0 }
|
pascal@21754
|
158 if (/isoopen\(s\+7\)/ && xlabel == "") goto2=1
|
pascal@21754
|
159 if (/_vid_mode,ax/ && xlabel == "") goto2=1
|
pascal@21754
|
160 if (/_base_himem\+2,/ && xlabel == "@") goto2=1
|
pascal@21754
|
161 if (/puts\(cmdline\)/ && xlabel == "@@") goto2=1
|
pascal@21754
|
162 if (goto2 == 1 && /jmp/) { # TAZBOOT.LST && LINLD.LST
|
pascal@21754
|
163 print $NF xlabel "@:"
|
pascal@21754
|
164 label=$NF
|
pascal@21754
|
165 }
|
pascal@21754
|
166 if (goto2 > 0 && label == $NF) {
|
pascal@21754
|
167 $0=$0 xlabel
|
pascal@21754
|
168 if (goto2++ == 1) xlabel=xlabel "@"
|
pascal@21754
|
169 }
|
pascal@21754
|
170 if (/cmdline=s\+=3/ || /magic \!= 0/ || /&root_dev =/) { isotazboot=10; j="" }
|
pascal@21754
|
171 if (isotazboot == 10) { # TAZBOOT.LST && LINLD.LST
|
pascal@21754
|
172 if (/je/ || /jne/) { j=$1; next }
|
pascal@21754
|
173 if (/jmp/) {
|
pascal@21754
|
174 if (j=="jne") sub(/jmp/,"je")
|
pascal@21754
|
175 else if (j=="je") sub(/jmp/,"jne")
|
pascal@21754
|
176 isotazboot=0
|
pascal@21754
|
177 }
|
pascal@21754
|
178 }
|
pascal@21754
|
179 if (/static const unsigned long initrddesc = 18L/) isotazboot=9
|
pascal@21754
|
180 if (isotazboot == 9) { # TAZBOOT.LST
|
pascal@21754
|
181 if (/,0/) {
|
pascal@21754
|
182 split($4,y,",")
|
pascal@21754
|
183 print " mov bx,offset " y[1]
|
pascal@21754
|
184 }
|
pascal@21754
|
185 if (/DGROUP:.*\+6,46/) {
|
pascal@21754
|
186 sub(/DGROUP:.*\+6,/,"[bx+6],")
|
pascal@21754
|
187 isotazboot=0
|
pascal@21754
|
188 }
|
pascal@21754
|
189 if (/mov/) $0=" mov si,bx"
|
pascal@21754
|
190 sub(/DGROUP:.*,/,"[bx],")
|
pascal@21729
|
191 }
|
pascal@21750
|
192 if (/isoopen\(s\+7\) != -1/) isotazboot=8
|
pascal@21750
|
193 if (isotazboot == 8) { # TAZBOOT.LST
|
pascal@21750
|
194 if (/ax,si/) next
|
pascal@21750
|
195 sub(/ax,ax/,"si,si")
|
pascal@21750
|
196 if (/magic/) isotazboot=0
|
pascal@21750
|
197 }
|
pascal@21750
|
198 if (/\+\+isknoppix/) isotazboot=7
|
pascal@21750
|
199 if (isotazboot == 7) { # TAZBOOT.LST
|
pascal@21750
|
200 if (/al,byte/) sub (/al,byte ptr DGROUP:/,"bx,offset ")
|
pascal@21750
|
201 if (/inc/) sub (/al/,"word ptr [bx]")
|
pascal@21750
|
202 if (/,al/) next
|
pascal@21750
|
203 if (/isokernel/) isotazboot=0
|
pascal@21750
|
204 }
|
pascal@21750
|
205 if (/if \(c\) s\+\+;/) isotazboot=6
|
pascal@21750
|
206 if (isotazboot == 6) { # TAZBOOT.LST
|
pascal@21750
|
207 if (/cmp/) {
|
pascal@21750
|
208 $0=" cmp al,0"
|
pascal@21750
|
209 isotazboot=0
|
pascal@21750
|
210 }
|
pascal@21750
|
211 }
|
pascal@21754
|
212 if (/static void next_chunk/) isotazboot=5
|
pascal@21754
|
213 if (isotazboot == 5 || isotazboot == 500) { # TAZBOOT.LST
|
pascal@21750
|
214 if (/cx,ax/) $0=" xchg ax,bx"
|
pascal@21754
|
215 if (/ax,word ptr \[si\+28\]/ && isotazboot == 500) next
|
pascal@21750
|
216 if (/bx,cx/) next
|
pascal@21754
|
217 if (/push/ || /pop/ || /bp,sp/ || /si,/) next
|
pascal@21754
|
218 sub(/\[si/,"[di")
|
pascal@21754
|
219 if (/initrd_info/) isotazboot=500
|
pascal@21750
|
220 if (/endp/) isotazboot=0
|
pascal@21750
|
221 }
|
pascal@21750
|
222 if (/0x7FF0/) isotazboot=4
|
pascal@21750
|
223 if (isotazboot == 4) { # TAZBOOT.LST
|
pascal@21750
|
224 if (/ax,word ptr/) {
|
pascal@21750
|
225 print " mov ax,32752"
|
pascal@21754
|
226 print " cwd"
|
pascal@21750
|
227 sub(/mov/,"sub")
|
pascal@21750
|
228 }
|
pascal@21750
|
229 if (/bx,/ || /cx,/ || /dx,/) next
|
pascal@21754
|
230 sub(/,0/,",dx")
|
pascal@21754
|
231 sub(/,bx/,",dx")
|
pascal@21750
|
232 sub(/,cx/,",ax")
|
pascal@21754
|
233 if (/@addinitrd\$qv/) isotazboot=0
|
pascal@21750
|
234 }
|
pascal@21750
|
235 if (/c = x->filename/) isotazboot=3
|
pascal@21750
|
236 if (isotazboot == 3) { # TAZBOOT.LST
|
pascal@21750
|
237 if (/ax,/) $0=" xchg ax,bx"
|
pascal@21750
|
238 if (/\]$/) next
|
pascal@21750
|
239 if (/@strcpy\$qpxzct1/) isotazboot=0
|
pascal@21750
|
240 }
|
pascal@21754
|
241 if (/base_himem = memtop/) isotazboot=2
|
pascal@21750
|
242 if (isotazboot == 2) { # TAZBOOT.LST
|
pascal@21754
|
243 if (/@6@226/ || /mov ax,1/ || /@6@254/ || /xor ax,ax/) next
|
pascal@21752
|
244 if (/word ptr \[bx\+2\],0/) {
|
pascal@21754
|
245 print s; hold=0
|
pascal@21752
|
246 print " mov bx,word ptr [bx+2]"
|
pascal@21752
|
247 $0=" or bx,bx"
|
pascal@21752
|
248 }
|
pascal@21752
|
249 if (/\[bp-4\],ax/) sub(/ax/,"bx")
|
pascal@21752
|
250 if (/ax,word ptr \[bx\+2\]/ || /bx,ax/) next
|
pascal@21750
|
251 if (/@strcmp\$qpxzct1/) isotazboot=0
|
pascal@21750
|
252 }
|
pascal@21751
|
253 if (/static void addinitrd/) isotazboot=100
|
pascal@21751
|
254 if (isotazboot == 100) { # TAZBOOT.LST
|
pascal@21751
|
255 if (/cx,ax/) {
|
pascal@21754
|
256 print " mov si,offset _isostate+8"
|
pascal@21757
|
257 print " push ds"
|
pascal@21757
|
258 print " pop es"
|
pascal@21754
|
259 print " xchg ax,di"
|
pascal@21751
|
260 print " movsw"
|
pascal@21751
|
261 print " movsw"
|
pascal@21751
|
262 print " movsw"
|
pascal@21751
|
263 print " movsw"
|
pascal@21754
|
264 $0=" xchg ax,di"
|
pascal@21751
|
265 }
|
pascal@21751
|
266 if (/mov/ && !/si/ && !/cl/) next
|
pascal@21754
|
267 if (/void load_initrds/) isotazboot=101
|
pascal@21751
|
268 }
|
pascal@21754
|
269 if (isotazboot == 101 || isotazboot == 102) { # TAZBOOT.LST
|
pascal@21754
|
270 sub(/\[si/,"[di"); sub(/si,/,"di,"); sub(/si$/,"di")
|
pascal@21754
|
271 sub(/DGROUP:_imgs\+38$/,"[di+38-32]")
|
pascal@21754
|
272 sub(/DGROUP:_imgs\+40$/,"[di+40-32]")
|
pascal@21754
|
273 if (/isofd/) isotazboot=102
|
pascal@21754
|
274 if (/push/ && isotazboot == 102) next
|
pascal@21754
|
275 if (/pop/ && isotazboot == 102) next
|
pascal@21754
|
276 if (/load_initrd/) isotazboot=101
|
pascal@21754
|
277 if (/isokernel/) isotazboot=103
|
pascal@21754
|
278 }
|
pascal@21754
|
279 if (isotazboot > 102) { # TAZBOOT.LST
|
pascal@21754
|
280 if (/push/ || /pop/) next
|
pascal@21754
|
281 sub(/\[si/,"[bx")
|
pascal@21750
|
282 sub(/si,/,"bx,")
|
pascal@21750
|
283 if (/static void bootiso/) isotazboot=0
|
pascal@21750
|
284 }
|
pascal@21729
|
285 if (wascall) {
|
pascal@21729
|
286 if (rcall != "") {
|
pascal@21729
|
287 if (/,ax$/) print " mov " rcall ",ax"
|
pascal@21729
|
288 else print " xchg ax," rcall
|
pascal@21729
|
289 wascall=0
|
pascal@21729
|
290 }
|
pascal@21729
|
291 else if (/^ mov .i,ax$/) {
|
pascal@21729
|
292 split($2,y,",")
|
pascal@21729
|
293 rcall=y[1]
|
pascal@21729
|
294 next
|
pascal@21729
|
295 }
|
pascal@21729
|
296 else wascall=0
|
pascal@21729
|
297 }
|
pascal@21729
|
298 if (/^ call /) { wascall=1; rcall="" }
|
pascal@20458
|
299 if (hold == 0) {
|
pascal@20458
|
300 s=$0
|
pascal@20534
|
301 if (/^ mov .[ix],bx$/ || /^ mov .[ix],.i$/) {
|
pascal@20543
|
302 r=$2; kept=0
|
pascal@20458
|
303 hold=1; split($2,regs,","); next
|
pascal@20458
|
304 }
|
pascal@21729
|
305 if (/^ inc e?.[ixhl]/ || /^ dec e?.[ixhl]/) {
|
pascal@20458
|
306 hold=2; r=$2; next
|
pascal@20458
|
307 }
|
pascal@20458
|
308 if (/^ mov [abcds][ix],/ && ! /,.s/) {
|
pascal@20458
|
309 hold=3; split($2,regs,","); next
|
pascal@20458
|
310 }
|
pascal@20458
|
311 if (/^ movzx eax,ax$/) { hold=4; next }
|
pascal@20544
|
312 if (/^ cmp word ptr/ || /^ cmp [bcd]x,/) {
|
pascal@20543
|
313 split($0,regs,",")
|
pascal@20543
|
314 if (isnum(regs[2]) && regs[2] != 0 &&
|
pascal@20543
|
315 (regs[2] % 256) == 0) {
|
pascal@20549
|
316 hold=5; next
|
pascal@20543
|
317 }
|
pascal@20543
|
318 }
|
pascal@20630
|
319 if (/^ mov ax,cs$/) { hold=6; kept=0; next }
|
pascal@20630
|
320 if (/^ mov cl,4$/) { hold=7; next }
|
pascal@20630
|
321 if (/^ cmp word ptr DGROUP:.*,0$/) {
|
pascal@20630
|
322 hold=8; split($2,regs,","); next
|
pascal@20630
|
323 }
|
pascal@20634
|
324 if (/^ cbw/) { hold=11; kept=0; next }
|
pascal@20634
|
325 if (/^ add [abcds][ix],2$/) {
|
pascal@20634
|
326 split($2,regs,","); hold=12; next
|
pascal@20634
|
327 }
|
pascal@20634
|
328 if (/^ sub [abcds][ix],2$/) {
|
pascal@20634
|
329 split($2,regs,","); hold=13; next
|
pascal@20634
|
330 }
|
pascal@21569
|
331 if (/^ push dx$/) {
|
pascal@21569
|
332 hold=14; next;
|
pascal@21569
|
333 }
|
pascal@20458
|
334 }
|
pascal@20458
|
335 else if (hold == 1) {
|
pascal@20543
|
336 if (/^ ;/) { line[kept++]=$0; next }
|
pascal@20458
|
337 hold=0; split($2,args,","); op=""
|
pascal@20458
|
338 if ($1 == "add") op="+"
|
pascal@20458
|
339 if ($1 == "sub") op="-"
|
pascal@20751
|
340 if ($1 == "inc") { op="+"; args[2]="1"; }
|
pascal@20751
|
341 if ($1 == "dec") { op="-"; args[2]="1"; }
|
pascal@20543
|
342 if (op != "" && regs[1] == args[1]) {
|
pascal@20543
|
343 if (isnum(args[2])) {
|
pascal@20630
|
344 for (i = kept++; i > 0; i--) line[i] = line[i-1]
|
pascal@20630
|
345 line[0] = "\tlea\t" regs[1] ",[" regs[2] op args[2] "]"
|
pascal@20630
|
346 hold=10; next
|
pascal@20543
|
347 }
|
pascal@20543
|
348 line[kept++]=$0
|
pascal@20543
|
349 hold=1
|
pascal@20458
|
350 next
|
pascal@20458
|
351 }
|
pascal@20520
|
352 if (/^ pop [ds]i/ && regs[2] ~ /^[ds]i$/) {
|
pascal@20520
|
353 print " xchg " r
|
pascal@20520
|
354 }
|
pascal@20543
|
355 else print s
|
pascal@20543
|
356 for (i = 0; i < kept; i++) print line[i]; kept=0
|
pascal@20458
|
357 }
|
pascal@20458
|
358 else if (hold == 2) {
|
pascal@21729
|
359 split($0,args,",")
|
pascal@21729
|
360 if (/^ mov / && r == args[2]) { print s; s=$0; next }
|
pascal@21729
|
361 split($2,args,",")
|
pascal@21729
|
362 hold=0; print s
|
pascal@20458
|
363 if ($1 == "or" && r == args[1] && r == args[2]) next # don't clear C ...
|
pascal@20458
|
364 }
|
pascal@20458
|
365 else if (hold == 3) {
|
pascal@20458
|
366 hold=0
|
pascal@21576
|
367 if (/^ call / && regs[2] == "ax") s=" xchg ax," regs[1]
|
pascal@20542
|
368 if (/^ add [abcds][ix],/) {
|
pascal@20458
|
369 split($2,regs2,",")
|
pascal@20458
|
370 if (regs[1] == regs2[1] && (regs2[2] == "offset" || isnum(regs2[2]))) {
|
pascal@20549
|
371 t=$0; sub(/mov/,$1,s); sub(/add/,"mov",t)
|
pascal@20458
|
372 print t; print s; next
|
pascal@20458
|
373 }
|
pascal@20458
|
374 }
|
pascal@20458
|
375 print s
|
pascal@20458
|
376 }
|
pascal@20458
|
377 else if (hold == 4) {
|
pascal@20458
|
378 hold=0
|
pascal@20458
|
379 if (/^ push eax$/) {
|
pascal@20458
|
380 print " push 0"; print " push ax"; next
|
pascal@20458
|
381 } else { print s }
|
pascal@20458
|
382 }
|
pascal@20543
|
383 else if (hold == 5) {
|
pascal@20543
|
384 hold=0
|
pascal@20543
|
385 if ($1 == "jae" || $1 == "jb") {
|
pascal@20544
|
386 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
|
pascal@20543
|
387 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
|
pascal@20543
|
388 s = s "/256"
|
pascal@20543
|
389 }
|
pascal@20543
|
390 print s
|
pascal@20543
|
391 }
|
pascal@20630
|
392 else if (hold == 6) {
|
pascal@20630
|
393 if (($1 == "and" || $1 == "add") && $2 ~ /^ax,/) {
|
pascal@20630
|
394 line[kept++]=$0
|
pascal@20630
|
395 next
|
pascal@20630
|
396 }
|
pascal@20630
|
397 p=$0
|
pascal@20630
|
398 if (/^ movzx eax,ax$/) {
|
pascal@20630
|
399 s=" mov eax,cs"; p=""
|
pascal@20630
|
400 }
|
pascal@20630
|
401 print s
|
pascal@20630
|
402 for (i = 0; i < kept; i++) print line[i]; kept=0
|
pascal@20630
|
403 if (p != "") print p
|
pascal@20630
|
404 hold=0; next
|
pascal@20630
|
405 }
|
pascal@20630
|
406 else if (hold == 7) {
|
pascal@20458
|
407 hold=0
|
pascal@20520
|
408 if (/^ call near ptr N_LXURSH@$/) {
|
pascal@20520
|
409 print " extrn N_LXURSH@4:near"
|
pascal@20520
|
410 print " call near ptr N_LXURSH@4"
|
pascal@20520
|
411 next
|
pascal@20520
|
412 }
|
pascal@20528
|
413 if (/^ call near ptr N_LXLSH@$/) {
|
pascal@20528
|
414 print " extrn N_LXLSH@4:near"
|
pascal@20528
|
415 print " call near ptr N_LXLSH@4"
|
pascal@20528
|
416 next
|
pascal@20528
|
417 }
|
pascal@20520
|
418 print s
|
pascal@20458
|
419 }
|
pascal@20630
|
420 else if (hold == 8) {
|
pascal@20630
|
421 if ($1 == "je" || $1 == "jne") { p=$0; hold=9; next }
|
pascal@20630
|
422 hold=0
|
pascal@20630
|
423 print s
|
pascal@20630
|
424 }
|
pascal@20630
|
425 else if (hold == 9) {
|
pascal@20630
|
426 hold=0; split($2,args,",")
|
pascal@20630
|
427 if (/^ mov ax,/ && args[2] == regs[1]) {
|
pascal@20630
|
428 print; print " or ax,ax"; print p; next
|
pascal@20630
|
429 }
|
pascal@20630
|
430 print s; print p;
|
pascal@20630
|
431 }
|
pascal@20630
|
432 else if (hold == 10) {
|
pascal@20751
|
433 split($2,args,","); op=""
|
pascal@20751
|
434 if ($1 == "add") op="+"
|
pascal@20751
|
435 if ($1 == "sub") op="-"
|
pascal@20751
|
436 if ($1 == "inc") { op="+"; args[2]="1"; }
|
pascal@20751
|
437 if ($1 == "dec") { op="-"; args[2]="1"; }
|
pascal@20751
|
438 if (op != "" && isnum(args[2])) {
|
pascal@20751
|
439 split(line[0],reg,",")
|
pascal@20751
|
440 if (substr(reg[1],length(reg[1])-1,2) == args[1]) {
|
pascal@20751
|
441 line[0] = substr(line[0],1,length(line[0])-1) op args[2] "]"
|
pascal@20751
|
442 next
|
pascal@20751
|
443 }
|
pascal@20751
|
444 }
|
pascal@20630
|
445 hold=0
|
pascal@20630
|
446 if (/^ mov [sd]i,ax$/) {
|
pascal@20630
|
447 split($2,args,",")
|
pascal@20630
|
448 for (i = 0; i < kept; i++) {
|
pascal@20630
|
449 sub(/ax/,args[1],line[i]); print line[i]
|
pascal@20630
|
450 }
|
pascal@20630
|
451 next
|
pascal@20630
|
452 }
|
pascal@20630
|
453 for (i = 0; i < kept; i++) print line[i]
|
pascal@20630
|
454 }
|
pascal@20634
|
455 else if (hold == 11) {
|
pascal@20634
|
456 if (/^ inc ax$/ || /^ dec ax$/) {
|
pascal@20634
|
457 line[kept++]=$0; next
|
pascal@20634
|
458 }
|
pascal@20634
|
459 split($2,args,",")
|
pascal@20634
|
460 if (/^ mov cl,/) {
|
pascal@20634
|
461 split($2,args,",")
|
pascal@20634
|
462 if (args[2] >= 8) {
|
pascal@20634
|
463 line[kept++]=$0; next
|
pascal@20634
|
464 }
|
pascal@20634
|
465 }
|
pascal@20634
|
466 if (!/^ shl ax,/ || (args[2] != "cl" && args[2] < 8)) {
|
pascal@20634
|
467 print " cbw "
|
pascal@20634
|
468 }
|
pascal@20634
|
469 for (i = 0; i < kept; i++) print line[i]
|
pascal@20634
|
470 hold=kept=0
|
pascal@20634
|
471 }
|
pascal@20634
|
472 else if (hold == 12) {
|
pascal@20634
|
473 hold=0
|
pascal@20634
|
474 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
|
pascal@20634
|
475 print " inc " regs[1]
|
pascal@20634
|
476 print " inc " regs[1]
|
pascal@20634
|
477 }
|
pascal@20634
|
478 else print " add " regs[1] ",2"
|
pascal@20634
|
479 }
|
pascal@20634
|
480 else if (hold == 13) {
|
pascal@20634
|
481 hold=0
|
pascal@20634
|
482 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
|
pascal@20634
|
483 print " dec " regs[1]
|
pascal@20634
|
484 print " dec " regs[1]
|
pascal@20634
|
485 }
|
pascal@20634
|
486 else print " sub " regs[1] ",2"
|
pascal@20634
|
487 }
|
pascal@21569
|
488 else if (hold == 14) {
|
pascal@21569
|
489 if (/^ push ax$/) { hold++; next; }
|
pascal@21569
|
490 print " push dx";
|
pascal@21569
|
491 hold=0;
|
pascal@21569
|
492 }
|
pascal@21569
|
493 else if (hold == 15) {
|
pascal@21569
|
494 if (/^ pop eax$/) { hold++; next; }
|
pascal@21569
|
495 print " push dx";
|
pascal@21569
|
496 print " push ax";
|
pascal@21569
|
497 hold=0;
|
pascal@21569
|
498 }
|
pascal@21569
|
499 else if (hold == 16) {
|
pascal@21569
|
500 hold=0;
|
pascal@21569
|
501 if (/^ shr eax,16$/) { print " xchg ax,dx"; next; }
|
pascal@21569
|
502 print " push dx";
|
pascal@21569
|
503 print " push ax";
|
pascal@21569
|
504 print " pop eax";
|
pascal@21569
|
505 }
|
pascal@21569
|
506 else if (hold == 17) {
|
pascal@21569
|
507 hold=0;
|
pascal@21569
|
508 if (/^ cmp ax,-1$/) { print " inc ax"; next; }
|
pascal@21569
|
509 }
|
pascal@21576
|
510 if (/^ call near ptr @fileexist\$/ || # return boolean :
|
pascal@21576
|
511 /^ call near ptr @isoreaddir\$/ || # 0=true, -1=false
|
pascal@21628
|
512 /^ call near ptr @isoreset\$/ ||
|
pascal@21628
|
513 /^ call near ptr @isoopen\$/ ||
|
pascal@21628
|
514 /^ call near ptr @isoreadsector\$/ ||
|
pascal@21628
|
515 /^ call near ptr @strhead\$/ ||
|
pascal@21576
|
516 /^ call near ptr @argstr\$/ ||
|
pascal@21576
|
517 /^ call near ptr @argnum\$/) { print; hold=17; next; }
|
pascal@20458
|
518 s=$0
|
pascal@20458
|
519 # These optimisation may break ZF or CF
|
pascal@20485
|
520 if (/^ sub sp,2$/) { print " push ax"; next }
|
pascal@20485
|
521 if (/^ sub sp,4$/) { print " push ax"; print " push ax"; next }
|
pascal@20485
|
522 if (/^ add sp,4$/) { print " pop cx"; print " pop cx"; next }
|
pascal@20458
|
523 if (/^ mov d*word ptr .*,0$/ || /^ mov dword ptr .*,large 0$/) {
|
pascal@20458
|
524 sub(/mov/,"and",s); print s; next # slower
|
pascal@20458
|
525 }
|
pascal@20458
|
526 if (/^ mov d*word ptr .*,-1$/ || /^ mov dword ptr .*,large -1$/) {
|
pascal@20458
|
527 sub(/mov/,"or",s); print s; next # slower
|
pascal@20458
|
528 }
|
pascal@20458
|
529 if (/^ or .*,0$/ || /^ and .*,-1$/) next
|
pascal@20458
|
530 if (/^ or [abcd]x,/) {
|
pascal@20458
|
531 split($2,args,",")
|
pascal@20458
|
532 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
|
pascal@20458
|
533 print " or " substr(args[1],1,1) "l," args[2]; next
|
pascal@20458
|
534 }
|
pascal@20458
|
535 }
|
pascal@20458
|
536 if (/^ and [abcd]x,/) {
|
pascal@20458
|
537 split($2,args,",")
|
pascal@20459
|
538 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
|
pascal@20458
|
539 print " and " substr(args[1],1,1) "l," args[2]; next
|
pascal@20458
|
540 }
|
pascal@20458
|
541 }
|
pascal@20458
|
542 if (/^ or e[abcd]x,/) {
|
pascal@20458
|
543 split($2,args,",")
|
pascal@20458
|
544 if (args[2] == "large") { args[2] = $3 }
|
pascal@20458
|
545 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
|
pascal@20458
|
546 print " or " substr(args[1],2,1) "l," args[2]; next
|
pascal@20458
|
547 }
|
pascal@20458
|
548 }
|
pascal@20458
|
549 if (/^ and e[abcd]x,/) {
|
pascal@20458
|
550 split($2,args,",")
|
pascal@20458
|
551 if (args[2] == "large") { args[2] = $3 }
|
pascal@20459
|
552 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
|
pascal@20458
|
553 print " and " substr(args[1],2,1) "l," args[2]; next
|
pascal@20458
|
554 }
|
pascal@20458
|
555 }
|
pascal@20458
|
556 if (/^ or e[abcds][ix],/) {
|
pascal@20458
|
557 split($2,args,",")
|
pascal@20458
|
558 if (args[2] == "large") { args[2] = $3 }
|
pascal@20458
|
559 if (isnum(args[2]) && args[2] >= 0 && args[2] < 65536) {
|
pascal@20458
|
560 print " or " substr(args[1],2) "," args[2]; next
|
pascal@20458
|
561 }
|
pascal@20458
|
562 }
|
pascal@20458
|
563 if (/^ and e[abcds][ix],/) {
|
pascal@20458
|
564 split($2,args,",")
|
pascal@20458
|
565 if (args[2] == "large") { args[2] = $3 }
|
pascal@20459
|
566 if (isnum(args[2]) && args[2] >= -65536 && args[2] < 0) {
|
pascal@20458
|
567 print " and " substr(args[1],2) "," args[2]; next
|
pascal@20458
|
568 }
|
pascal@20458
|
569 }
|
pascal@20543
|
570 if (/^ add word ptr/ || /^ sub word ptr/ ||
|
pascal@20544
|
571 /^ add [bcd]x,/ || /^ sub [bcd]x,/) {
|
pascal@20542
|
572 split($0,args,",")
|
pascal@20542
|
573 if (isnum(args[2]) && (args[2] % 256 == 0)) {
|
pascal@20544
|
574 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
|
pascal@20543
|
575 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
|
pascal@20542
|
576 print s "/256"; next
|
pascal@20542
|
577 }
|
pascal@20542
|
578 }
|
pascal@20546
|
579 if (/^ add dword ptr/ || /^ sub dword ptr/) {
|
pascal@20458
|
580 split($0,args,",")
|
pascal@20543
|
581 if (args[2] == "large") { args[2] = $3 }
|
pascal@20458
|
582 if (isnum(args[2])) {
|
pascal@20546
|
583 if (args[2] % 16777216 == 0) {
|
pascal@20546
|
584 sub(/dword/,"byte",s)
|
pascal@20543
|
585 sub(/\],/,"+3],",s) || sub(/,/,"+3,",s)
|
pascal@20458
|
586 print s "/16777216"; next
|
pascal@20458
|
587 }
|
pascal@20458
|
588 if (args[2] % 65536 == 0) {
|
pascal@20546
|
589 sub(/dword/,"word",s)
|
pascal@20543
|
590 sub(/\],/,"+2],",s) || sub(/,/,"+2,",s)
|
pascal@20458
|
591 print s "/65536"; next
|
pascal@20458
|
592 }
|
pascal@20458
|
593 }
|
pascal@20458
|
594 }
|
pascal@20458
|
595 if (/^ mov e.x,/) {
|
pascal@20458
|
596 split($2,args,",")
|
pascal@20458
|
597 r=args[1]
|
pascal@20458
|
598 if (args[2] == "large") { args[2] = $3 }
|
pascal@20458
|
599 if (isnum(args[2]) && args[2] % 65536 == args[2]) {
|
pascal@20458
|
600 if (args[2] % 256 == args[2] || args[2] % 256 == 0) {
|
pascal@20458
|
601 print " xor " r "," r
|
pascal@20458
|
602 if (args[2] == 0) next
|
pascal@20458
|
603 x=" mov " substr(r,2,1)
|
pascal@20458
|
604 if (args[2] % 256 == 0) {
|
pascal@20458
|
605 print x "h," args[2] "/256"
|
pascal@20458
|
606 }
|
pascal@20458
|
607 else { print x "l," args[2] }
|
pascal@20458
|
608 next
|
pascal@20458
|
609 }
|
pascal@20458
|
610 }
|
pascal@20458
|
611 }
|
pascal@21576
|
612 if (afterjmp) print ";" $0
|
pascal@21576
|
613 else print
|
pascal@21754
|
614 if (/^ jmp / || /^ call near ptr _boot_kernel/ ||
|
pascal@21754
|
615 /^ call near ptr @die$qpxzc/) afterjmp=1
|
pascal@20458
|
616 }
|