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@21784
|
9 if (/fallback\)\[1\] == 0/) isload=8
|
pascal@21784
|
10 if (isload == 8) { # LOAD.LST
|
pascal@21784
|
11 if (/load_image/) isload=0
|
pascal@21784
|
12 else next
|
pascal@21784
|
13 }
|
pascal@21757
|
14 if (/cmd_line_ptr =/ && is386 == 0) isload=7
|
pascal@21757
|
15 if (isload == 7) { # LOAD.LST
|
pascal@21757
|
16 if (/add/ || /xor/ || /extrn/ || /N_LXLSH@/ || /cl,4/) next
|
pascal@21757
|
17 if (/,ax/) {
|
pascal@21757
|
18 sub(/ax/,"8000h")
|
pascal@21757
|
19 isload=0
|
pascal@21757
|
20 }
|
pascal@21757
|
21 if (/,dx/) {
|
pascal@21757
|
22 print " mov cl,12"
|
pascal@21757
|
23 print " shr ax,cl"
|
pascal@21757
|
24 sub(/dx/,"ax")
|
pascal@21757
|
25 }
|
pascal@21757
|
26 }
|
pascal@21757
|
27 if (/\[0\] = m-\>fallback/) isload=6
|
pascal@21757
|
28 if (isload == 6) { # LOAD.LST
|
pascal@21757
|
29 if (/si\+2/) {
|
pascal@21757
|
30 print " inc si"
|
pascal@21757
|
31 $0=" inc si"
|
pascal@21757
|
32 }
|
pascal@21757
|
33 if (/les/) sub(/bx,/,"ax,")
|
pascal@21757
|
34 if (/bx\+4/ || /es:/) {
|
pascal@21757
|
35 if (/bx\+4/) isload=0
|
pascal@21757
|
36 next
|
pascal@21757
|
37 }
|
pascal@21757
|
38 if (/si\+6/) {
|
pascal@21757
|
39 print " xchg ax,di"
|
pascal@21757
|
40 print " movsw"
|
pascal@21757
|
41 print " movsw"
|
pascal@21757
|
42 print " movsw"
|
pascal@21757
|
43 print " movsw"
|
pascal@21757
|
44 print " xchg ax,di"
|
pascal@21757
|
45 next
|
pascal@21757
|
46 }
|
pascal@21757
|
47 }
|
pascal@21757
|
48 if (/version_string = /) isload=5
|
pascal@21757
|
49 if (isload == 5) { # LOAD.LST
|
pascal@21757
|
50 sub(/ax,/,"bx,")
|
pascal@21757
|
51 if (/_version_string,/) isload=0
|
pascal@21757
|
52 if (/mov bx,ax/) next
|
pascal@21757
|
53 }
|
pascal@21757
|
54 if (/topseg\(\)>>12/) isload=4
|
pascal@21757
|
55 if (isload == 4 && is386 == 0) { # LOAD.LST
|
pascal@21757
|
56 if (/push/ || /pop/) next
|
pascal@21757
|
57 if (/ax,cs/) {
|
pascal@21757
|
58 print " cwd"
|
pascal@21757
|
59 sub(/ax,cs/,"bx,cs")
|
pascal@21757
|
60 }
|
pascal@21757
|
61 if (/dx,dx/) next
|
pascal@21757
|
62 sub(/ax,dx/,"ax,bx")
|
pascal@21784
|
63 if (/call/) {
|
pascal@21784
|
64 print " cmp ax,0fffh"
|
pascal@21784
|
65 print " jae @sys@ok"
|
pascal@21784
|
66 print " mov ax,0fffh"
|
pascal@21784
|
67 print "@sys@ok:"
|
pascal@21784
|
68 isload=400
|
pascal@21784
|
69 }
|
pascal@21757
|
70 }
|
pascal@21757
|
71 if (isload == 400 && /,0/) {
|
pascal@21757
|
72 sub(/,0/,",dh")
|
pascal@21757
|
73 isload=0
|
pascal@21757
|
74 }
|
pascal@21757
|
75 if (isload == 4 && is386) { # LOAD.LST
|
pascal@21757
|
76 sub(/dx,cs/,"edx,cs")
|
pascal@21757
|
77 sub(/eax/,"edx")
|
pascal@21784
|
78 if (/shl/) {
|
pascal@21784
|
79 print " mov ax,0fffh"
|
pascal@21784
|
80 print " cmp dx,ax"
|
pascal@21784
|
81 print " jae @sys@ok"
|
pascal@21784
|
82 print " xchg ax,dx"
|
pascal@21784
|
83 print "@sys@ok:"
|
pascal@21784
|
84 }
|
pascal@21757
|
85 sub(/ax,9/,"dx,9")
|
pascal@21758
|
86 if (/,0$/) sub(/,0/,",dh")
|
pascal@21757
|
87 if (/movzx/) next
|
pascal@21757
|
88 if (/fallback = base_himem/) { isload=0 }
|
pascal@21757
|
89 }
|
pascal@21754
|
90 if (/void load_initrd\(\)/) isload=3
|
pascal@21754
|
91 if (isload == 3) { # LOAD.LST
|
pascal@21754
|
92 if(/push di/ || /pop di/) next
|
pascal@21754
|
93 sub(/\[di/,"[bx")
|
pascal@21754
|
94 sub(/\di,/,"bx,")
|
pascal@21754
|
95 }
|
pascal@21750
|
96 if (/vid_mode = vid_mode/) isload=2
|
pascal@21750
|
97 if (isload == 2) { # LOAD.LST
|
pascal@21750
|
98 sub(/,0/,""); sub(/cmp /,"mov cx,")
|
pascal@21750
|
99 sub(/je/,"jcxz")
|
pascal@21750
|
100 if (/ax,word/) next
|
pascal@21750
|
101 sub(/,ax/,",cx")
|
pascal@21757
|
102 if (/version_string/ || /starting linux 1\.3\.73/) isload=0
|
pascal@21750
|
103 }
|
pascal@21757
|
104 if (/_rm_size=0x200/ || /heap_top = _rm_buf/) isload=1
|
pascal@21750
|
105 if (isload == 1) { # LOAD.LST
|
pascal@21729
|
106 if (/mov al,byte ptr/ && is386) {
|
pascal@21729
|
107 print " movzx eax,byte ptr [si]"
|
pascal@21729
|
108 next
|
pascal@21729
|
109 }
|
pascal@21729
|
110 if (/ax,word ptr/) next
|
pascal@21729
|
111 if (/^ call/) isload=0
|
pascal@21729
|
112 }
|
pascal@21754
|
113 if (/CD001/) isiso=7
|
pascal@21754
|
114 if (isiso == 7) { # ISO9660.LST
|
pascal@21754
|
115 sub(/mov ax,-1/,"dec ax")
|
pascal@21754
|
116 if (/jmp/) isiso=0
|
pascal@21754
|
117 }
|
pascal@21754
|
118 if (/int len =/) isiso=6
|
pascal@21754
|
119 if (isiso == 6) { # ISO9660.LST
|
pascal@21754
|
120 if (/dx,ax/) next
|
pascal@21754
|
121 sub(/ax/,"dx")
|
pascal@21754
|
122 sub(/cx,di/,"bx,di")
|
pascal@21754
|
123 sub(/cx,dx/,"bx,ax")
|
pascal@21754
|
124 sub(/di,dx/,"di,ax")
|
pascal@21754
|
125 if (/while/) isiso=2
|
pascal@21754
|
126 }
|
pascal@21754
|
127 if (/entrysize =/) isiso=5
|
pascal@21754
|
128 if (isiso == 5) { # ISO9660.LST
|
pascal@21754
|
129 if (/ax,ax/) next
|
pascal@21754
|
130 sub(/ax/,"cx")
|
pascal@21754
|
131 sub(/je/,"jcxz")
|
pascal@21754
|
132 if (/return/) isiso=0
|
pascal@21754
|
133 }
|
pascal@21735
|
134 if (/x->curdirsize == 0xFFFF/) isiso=4
|
pascal@21735
|
135 if (isiso == 4) { # ISO9660.LST
|
pascal@21754
|
136 sub(/DGROUP:_isostate\+18/,"[si+18]")
|
pascal@21754
|
137 sub(/DGROUP:_isostate\+20/,"[si+20]")
|
pascal@21747
|
138 if (/goto restarted/) isiso=0
|
pascal@21735
|
139 }
|
pascal@21754
|
140 if (/do s\+\+; while/) isiso=3
|
pascal@21754
|
141 if (/for \(p = s; \*s && \*s \!=/) isiso=3
|
pascal@21750
|
142 if (isiso == 3) { # ISO9660.LST, TAZBOOT.LST
|
pascal@21754
|
143 sub(/cmp byte ptr \[.i\]/,"sub al")
|
pascal@21754
|
144 if (/mov byte ptr \[bp-5\],al/) $0=" push ax"
|
pascal@21754
|
145 if (/mov al,byte ptr \[bp-5\]/) $0=" pop ax"
|
pascal@21754
|
146 if (/inc /) { r=$2; print; next }
|
pascal@21754
|
147 if (/al,0/) print " mov al,[" r "]"
|
pascal@21754
|
148 if (/al,byte ptr/) sub(/mov/,"xchg")
|
pascal@21754
|
149 if (/byte ptr \[.*\],0/) next
|
pascal@21754
|
150 if (/jmp/) print " mov bx,si"
|
pascal@21754
|
151 if (/word ptr \[bp-4\]/) next
|
pascal@21754
|
152 if (/\) s\+\+;/ || /\],-1/) isiso=0
|
pascal@21735
|
153 }
|
pascal@21735
|
154 if (/endname = NULL/) isiso=2
|
pascal@21735
|
155 if (isiso == 2) { # ISO9660.LST
|
pascal@21735
|
156 if (/mov bx,cx/) next
|
pascal@21735
|
157 gsub(/cx/,"bx")
|
pascal@21754
|
158 sub(/DGROUP:_isostate\+35/,"[si+35]")
|
pascal@21735
|
159 }
|
pascal@21735
|
160 if (/const char \*n = name/) isiso=1
|
pascal@21735
|
161 if (isiso == 1) { # ISO9660.LST
|
pascal@21735
|
162 if ((/mov word ptr \[si\+32\],ax/ ) ||
|
pascal@21754
|
163 (/mov ax,word ptr \[si\+2\]/) ||
|
pascal@21735
|
164 (/bx,word ptr \[si\+32\]/) || (/ax,dx/)) next
|
pascal@21729
|
165 if (/dx,/) sub(/dx/,"ax")
|
pascal@21754
|
166 if ((/sub ax,word ptr \[si\+2\]/) ||
|
pascal@21754
|
167 (/\[si\+16\]/) || (/ax,di/)) sub(/ax/,"bx")
|
pascal@21754
|
168 if (/add word ptr \[si\+32\],ax/) $0=" add bx,word ptr [si+16]"
|
pascal@21735
|
169 if (/al,/ || /,al/) sub(/al/,"cl")
|
pascal@21754
|
170 if (/cmp byte ptr \[si\+34\],0/) $0=" or cl,cl"
|
pascal@21735
|
171 if (/jne @@0$/) next
|
pascal@21735
|
172 if (/jmp @3@58$/) $0=" je @3@58"
|
pascal@21754
|
173 sub(/mov ax,-1/,"dec ax")
|
pascal@21754
|
174 }
|
pascal@21754
|
175 if (/endp/) { xlabel = ""; goto2=0 }
|
pascal@21754
|
176 if (/isoopen\(s\+7\)/ && xlabel == "") goto2=1
|
pascal@21754
|
177 if (/_vid_mode,ax/ && xlabel == "") goto2=1
|
pascal@21754
|
178 if (/_base_himem\+2,/ && xlabel == "@") goto2=1
|
pascal@21754
|
179 if (/puts\(cmdline\)/ && xlabel == "@@") goto2=1
|
pascal@21754
|
180 if (goto2 == 1 && /jmp/) { # TAZBOOT.LST && LINLD.LST
|
pascal@21754
|
181 print $NF xlabel "@:"
|
pascal@21754
|
182 label=$NF
|
pascal@21754
|
183 }
|
pascal@21754
|
184 if (goto2 > 0 && label == $NF) {
|
pascal@21754
|
185 $0=$0 xlabel
|
pascal@21754
|
186 if (goto2++ == 1) xlabel=xlabel "@"
|
pascal@21754
|
187 }
|
pascal@21754
|
188 if (/cmdline=s\+=3/ || /magic \!= 0/ || /&root_dev =/) { isotazboot=10; j="" }
|
pascal@21754
|
189 if (isotazboot == 10) { # TAZBOOT.LST && LINLD.LST
|
pascal@21754
|
190 if (/je/ || /jne/) { j=$1; next }
|
pascal@21754
|
191 if (/jmp/) {
|
pascal@21754
|
192 if (j=="jne") sub(/jmp/,"je")
|
pascal@21754
|
193 else if (j=="je") sub(/jmp/,"jne")
|
pascal@21754
|
194 isotazboot=0
|
pascal@21754
|
195 }
|
pascal@21754
|
196 }
|
pascal@21754
|
197 if (/static const unsigned long initrddesc = 18L/) isotazboot=9
|
pascal@21754
|
198 if (isotazboot == 9) { # TAZBOOT.LST
|
pascal@21754
|
199 if (/,0/) {
|
pascal@21754
|
200 split($4,y,",")
|
pascal@21754
|
201 print " mov bx,offset " y[1]
|
pascal@21754
|
202 }
|
pascal@21754
|
203 if (/DGROUP:.*\+6,46/) {
|
pascal@21754
|
204 sub(/DGROUP:.*\+6,/,"[bx+6],")
|
pascal@21754
|
205 isotazboot=0
|
pascal@21754
|
206 }
|
pascal@21754
|
207 if (/mov/) $0=" mov si,bx"
|
pascal@21754
|
208 sub(/DGROUP:.*,/,"[bx],")
|
pascal@21729
|
209 }
|
pascal@21750
|
210 if (/isoopen\(s\+7\) != -1/) isotazboot=8
|
pascal@21750
|
211 if (isotazboot == 8) { # TAZBOOT.LST
|
pascal@21750
|
212 if (/ax,si/) next
|
pascal@21750
|
213 sub(/ax,ax/,"si,si")
|
pascal@21750
|
214 if (/magic/) isotazboot=0
|
pascal@21750
|
215 }
|
pascal@21750
|
216 if (/\+\+isknoppix/) isotazboot=7
|
pascal@21750
|
217 if (isotazboot == 7) { # TAZBOOT.LST
|
pascal@21750
|
218 if (/al,byte/) sub (/al,byte ptr DGROUP:/,"bx,offset ")
|
pascal@21750
|
219 if (/inc/) sub (/al/,"word ptr [bx]")
|
pascal@21750
|
220 if (/,al/) next
|
pascal@21750
|
221 if (/isokernel/) isotazboot=0
|
pascal@21750
|
222 }
|
pascal@21750
|
223 if (/if \(c\) s\+\+;/) isotazboot=6
|
pascal@21750
|
224 if (isotazboot == 6) { # TAZBOOT.LST
|
pascal@21750
|
225 if (/cmp/) {
|
pascal@21750
|
226 $0=" cmp al,0"
|
pascal@21750
|
227 isotazboot=0
|
pascal@21750
|
228 }
|
pascal@21750
|
229 }
|
pascal@21754
|
230 if (/static void next_chunk/) isotazboot=5
|
pascal@21754
|
231 if (isotazboot == 5 || isotazboot == 500) { # TAZBOOT.LST
|
pascal@21750
|
232 if (/cx,ax/) $0=" xchg ax,bx"
|
pascal@21754
|
233 if (/ax,word ptr \[si\+28\]/ && isotazboot == 500) next
|
pascal@21750
|
234 if (/bx,cx/) next
|
pascal@21754
|
235 if (/push/ || /pop/ || /bp,sp/ || /si,/) next
|
pascal@21754
|
236 sub(/\[si/,"[di")
|
pascal@21754
|
237 if (/initrd_info/) isotazboot=500
|
pascal@21750
|
238 if (/endp/) isotazboot=0
|
pascal@21750
|
239 }
|
pascal@21750
|
240 if (/0x7FF0/) isotazboot=4
|
pascal@21750
|
241 if (isotazboot == 4) { # TAZBOOT.LST
|
pascal@21750
|
242 if (/ax,word ptr/) {
|
pascal@21750
|
243 print " mov ax,32752"
|
pascal@21754
|
244 print " cwd"
|
pascal@21750
|
245 sub(/mov/,"sub")
|
pascal@21750
|
246 }
|
pascal@21750
|
247 if (/bx,/ || /cx,/ || /dx,/) next
|
pascal@21754
|
248 sub(/,0/,",dx")
|
pascal@21754
|
249 sub(/,bx/,",dx")
|
pascal@21750
|
250 sub(/,cx/,",ax")
|
pascal@21754
|
251 if (/@addinitrd\$qv/) isotazboot=0
|
pascal@21750
|
252 }
|
pascal@21750
|
253 if (/c = x->filename/) isotazboot=3
|
pascal@21750
|
254 if (isotazboot == 3) { # TAZBOOT.LST
|
pascal@21750
|
255 if (/ax,/) $0=" xchg ax,bx"
|
pascal@21750
|
256 if (/\]$/) next
|
pascal@21750
|
257 if (/@strcpy\$qpxzct1/) isotazboot=0
|
pascal@21750
|
258 }
|
pascal@21754
|
259 if (/base_himem = memtop/) isotazboot=2
|
pascal@21750
|
260 if (isotazboot == 2) { # TAZBOOT.LST
|
pascal@21754
|
261 if (/@6@226/ || /mov ax,1/ || /@6@254/ || /xor ax,ax/) next
|
pascal@21752
|
262 if (/word ptr \[bx\+2\],0/) {
|
pascal@21754
|
263 print s; hold=0
|
pascal@21752
|
264 print " mov bx,word ptr [bx+2]"
|
pascal@21752
|
265 $0=" or bx,bx"
|
pascal@21752
|
266 }
|
pascal@21752
|
267 if (/\[bp-4\],ax/) sub(/ax/,"bx")
|
pascal@21752
|
268 if (/ax,word ptr \[bx\+2\]/ || /bx,ax/) next
|
pascal@21750
|
269 if (/@strcmp\$qpxzct1/) isotazboot=0
|
pascal@21750
|
270 }
|
pascal@21751
|
271 if (/static void addinitrd/) isotazboot=100
|
pascal@21751
|
272 if (isotazboot == 100) { # TAZBOOT.LST
|
pascal@21751
|
273 if (/cx,ax/) {
|
pascal@21754
|
274 print " mov si,offset _isostate+8"
|
pascal@21757
|
275 print " push ds"
|
pascal@21757
|
276 print " pop es"
|
pascal@21754
|
277 print " xchg ax,di"
|
pascal@21751
|
278 print " movsw"
|
pascal@21751
|
279 print " movsw"
|
pascal@21751
|
280 print " movsw"
|
pascal@21751
|
281 print " movsw"
|
pascal@21754
|
282 $0=" xchg ax,di"
|
pascal@21751
|
283 }
|
pascal@21751
|
284 if (/mov/ && !/si/ && !/cl/) next
|
pascal@21754
|
285 if (/void load_initrds/) isotazboot=101
|
pascal@21751
|
286 }
|
pascal@21754
|
287 if (isotazboot == 101 || isotazboot == 102) { # TAZBOOT.LST
|
pascal@21754
|
288 sub(/\[si/,"[di"); sub(/si,/,"di,"); sub(/si$/,"di")
|
pascal@21754
|
289 sub(/DGROUP:_imgs\+38$/,"[di+38-32]")
|
pascal@21754
|
290 sub(/DGROUP:_imgs\+40$/,"[di+40-32]")
|
pascal@21754
|
291 if (/isofd/) isotazboot=102
|
pascal@21754
|
292 if (/push/ && isotazboot == 102) next
|
pascal@21754
|
293 if (/pop/ && isotazboot == 102) next
|
pascal@21754
|
294 if (/load_initrd/) isotazboot=101
|
pascal@21754
|
295 if (/isokernel/) isotazboot=103
|
pascal@21754
|
296 }
|
pascal@21754
|
297 if (isotazboot > 102) { # TAZBOOT.LST
|
pascal@21754
|
298 if (/push/ || /pop/) next
|
pascal@21754
|
299 sub(/\[si/,"[bx")
|
pascal@21750
|
300 sub(/si,/,"bx,")
|
pascal@21750
|
301 if (/static void bootiso/) isotazboot=0
|
pascal@21750
|
302 }
|
pascal@21729
|
303 if (wascall) {
|
pascal@21729
|
304 if (rcall != "") {
|
pascal@21729
|
305 if (/,ax$/) print " mov " rcall ",ax"
|
pascal@21729
|
306 else print " xchg ax," rcall
|
pascal@21729
|
307 wascall=0
|
pascal@21729
|
308 }
|
pascal@21729
|
309 else if (/^ mov .i,ax$/) {
|
pascal@21729
|
310 split($2,y,",")
|
pascal@21729
|
311 rcall=y[1]
|
pascal@21729
|
312 next
|
pascal@21729
|
313 }
|
pascal@21729
|
314 else wascall=0
|
pascal@21729
|
315 }
|
pascal@21729
|
316 if (/^ call /) { wascall=1; rcall="" }
|
pascal@20458
|
317 if (hold == 0) {
|
pascal@20458
|
318 s=$0
|
pascal@20534
|
319 if (/^ mov .[ix],bx$/ || /^ mov .[ix],.i$/) {
|
pascal@20543
|
320 r=$2; kept=0
|
pascal@20458
|
321 hold=1; split($2,regs,","); next
|
pascal@20458
|
322 }
|
pascal@21729
|
323 if (/^ inc e?.[ixhl]/ || /^ dec e?.[ixhl]/) {
|
pascal@20458
|
324 hold=2; r=$2; next
|
pascal@20458
|
325 }
|
pascal@20458
|
326 if (/^ mov [abcds][ix],/ && ! /,.s/) {
|
pascal@20458
|
327 hold=3; split($2,regs,","); next
|
pascal@20458
|
328 }
|
pascal@20458
|
329 if (/^ movzx eax,ax$/) { hold=4; next }
|
pascal@20544
|
330 if (/^ cmp word ptr/ || /^ cmp [bcd]x,/) {
|
pascal@20543
|
331 split($0,regs,",")
|
pascal@20543
|
332 if (isnum(regs[2]) && regs[2] != 0 &&
|
pascal@20543
|
333 (regs[2] % 256) == 0) {
|
pascal@20549
|
334 hold=5; next
|
pascal@20543
|
335 }
|
pascal@20543
|
336 }
|
pascal@20630
|
337 if (/^ mov ax,cs$/) { hold=6; kept=0; next }
|
pascal@20630
|
338 if (/^ mov cl,4$/) { hold=7; next }
|
pascal@20630
|
339 if (/^ cmp word ptr DGROUP:.*,0$/) {
|
pascal@20630
|
340 hold=8; split($2,regs,","); next
|
pascal@20630
|
341 }
|
pascal@20634
|
342 if (/^ cbw/) { hold=11; kept=0; next }
|
pascal@20634
|
343 if (/^ add [abcds][ix],2$/) {
|
pascal@20634
|
344 split($2,regs,","); hold=12; next
|
pascal@20634
|
345 }
|
pascal@20634
|
346 if (/^ sub [abcds][ix],2$/) {
|
pascal@20634
|
347 split($2,regs,","); hold=13; next
|
pascal@20634
|
348 }
|
pascal@21569
|
349 if (/^ push dx$/) {
|
pascal@21569
|
350 hold=14; next;
|
pascal@21569
|
351 }
|
pascal@20458
|
352 }
|
pascal@20458
|
353 else if (hold == 1) {
|
pascal@20543
|
354 if (/^ ;/) { line[kept++]=$0; next }
|
pascal@20458
|
355 hold=0; split($2,args,","); op=""
|
pascal@20458
|
356 if ($1 == "add") op="+"
|
pascal@20458
|
357 if ($1 == "sub") op="-"
|
pascal@20751
|
358 if ($1 == "inc") { op="+"; args[2]="1"; }
|
pascal@20751
|
359 if ($1 == "dec") { op="-"; args[2]="1"; }
|
pascal@20543
|
360 if (op != "" && regs[1] == args[1]) {
|
pascal@20543
|
361 if (isnum(args[2])) {
|
pascal@20630
|
362 for (i = kept++; i > 0; i--) line[i] = line[i-1]
|
pascal@20630
|
363 line[0] = "\tlea\t" regs[1] ",[" regs[2] op args[2] "]"
|
pascal@20630
|
364 hold=10; next
|
pascal@20543
|
365 }
|
pascal@20543
|
366 line[kept++]=$0
|
pascal@20543
|
367 hold=1
|
pascal@20458
|
368 next
|
pascal@20458
|
369 }
|
pascal@20520
|
370 if (/^ pop [ds]i/ && regs[2] ~ /^[ds]i$/) {
|
pascal@20520
|
371 print " xchg " r
|
pascal@20520
|
372 }
|
pascal@20543
|
373 else print s
|
pascal@20543
|
374 for (i = 0; i < kept; i++) print line[i]; kept=0
|
pascal@20458
|
375 }
|
pascal@20458
|
376 else if (hold == 2) {
|
pascal@21729
|
377 split($0,args,",")
|
pascal@21729
|
378 if (/^ mov / && r == args[2]) { print s; s=$0; next }
|
pascal@21729
|
379 split($2,args,",")
|
pascal@21729
|
380 hold=0; print s
|
pascal@20458
|
381 if ($1 == "or" && r == args[1] && r == args[2]) next # don't clear C ...
|
pascal@20458
|
382 }
|
pascal@20458
|
383 else if (hold == 3) {
|
pascal@20458
|
384 hold=0
|
pascal@21576
|
385 if (/^ call / && regs[2] == "ax") s=" xchg ax," regs[1]
|
pascal@20542
|
386 if (/^ add [abcds][ix],/) {
|
pascal@20458
|
387 split($2,regs2,",")
|
pascal@20458
|
388 if (regs[1] == regs2[1] && (regs2[2] == "offset" || isnum(regs2[2]))) {
|
pascal@20549
|
389 t=$0; sub(/mov/,$1,s); sub(/add/,"mov",t)
|
pascal@20458
|
390 print t; print s; next
|
pascal@20458
|
391 }
|
pascal@20458
|
392 }
|
pascal@20458
|
393 print s
|
pascal@20458
|
394 }
|
pascal@20458
|
395 else if (hold == 4) {
|
pascal@20458
|
396 hold=0
|
pascal@20458
|
397 if (/^ push eax$/) {
|
pascal@20458
|
398 print " push 0"; print " push ax"; next
|
pascal@20458
|
399 } else { print s }
|
pascal@20458
|
400 }
|
pascal@20543
|
401 else if (hold == 5) {
|
pascal@20543
|
402 hold=0
|
pascal@20543
|
403 if ($1 == "jae" || $1 == "jb") {
|
pascal@20544
|
404 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
|
pascal@20543
|
405 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
|
pascal@20543
|
406 s = s "/256"
|
pascal@20543
|
407 }
|
pascal@20543
|
408 print s
|
pascal@20543
|
409 }
|
pascal@20630
|
410 else if (hold == 6) {
|
pascal@20630
|
411 if (($1 == "and" || $1 == "add") && $2 ~ /^ax,/) {
|
pascal@20630
|
412 line[kept++]=$0
|
pascal@20630
|
413 next
|
pascal@20630
|
414 }
|
pascal@20630
|
415 p=$0
|
pascal@20630
|
416 if (/^ movzx eax,ax$/) {
|
pascal@20630
|
417 s=" mov eax,cs"; p=""
|
pascal@20630
|
418 }
|
pascal@20630
|
419 print s
|
pascal@20630
|
420 for (i = 0; i < kept; i++) print line[i]; kept=0
|
pascal@20630
|
421 if (p != "") print p
|
pascal@20630
|
422 hold=0; next
|
pascal@20630
|
423 }
|
pascal@20630
|
424 else if (hold == 7) {
|
pascal@20458
|
425 hold=0
|
pascal@20520
|
426 if (/^ call near ptr N_LXURSH@$/) {
|
pascal@20520
|
427 print " extrn N_LXURSH@4:near"
|
pascal@20520
|
428 print " call near ptr N_LXURSH@4"
|
pascal@20520
|
429 next
|
pascal@20520
|
430 }
|
pascal@20528
|
431 if (/^ call near ptr N_LXLSH@$/) {
|
pascal@20528
|
432 print " extrn N_LXLSH@4:near"
|
pascal@20528
|
433 print " call near ptr N_LXLSH@4"
|
pascal@20528
|
434 next
|
pascal@20528
|
435 }
|
pascal@20520
|
436 print s
|
pascal@20458
|
437 }
|
pascal@20630
|
438 else if (hold == 8) {
|
pascal@20630
|
439 if ($1 == "je" || $1 == "jne") { p=$0; hold=9; next }
|
pascal@20630
|
440 hold=0
|
pascal@20630
|
441 print s
|
pascal@20630
|
442 }
|
pascal@20630
|
443 else if (hold == 9) {
|
pascal@20630
|
444 hold=0; split($2,args,",")
|
pascal@20630
|
445 if (/^ mov ax,/ && args[2] == regs[1]) {
|
pascal@20630
|
446 print; print " or ax,ax"; print p; next
|
pascal@20630
|
447 }
|
pascal@20630
|
448 print s; print p;
|
pascal@20630
|
449 }
|
pascal@20630
|
450 else if (hold == 10) {
|
pascal@20751
|
451 split($2,args,","); op=""
|
pascal@20751
|
452 if ($1 == "add") op="+"
|
pascal@20751
|
453 if ($1 == "sub") op="-"
|
pascal@20751
|
454 if ($1 == "inc") { op="+"; args[2]="1"; }
|
pascal@20751
|
455 if ($1 == "dec") { op="-"; args[2]="1"; }
|
pascal@20751
|
456 if (op != "" && isnum(args[2])) {
|
pascal@20751
|
457 split(line[0],reg,",")
|
pascal@20751
|
458 if (substr(reg[1],length(reg[1])-1,2) == args[1]) {
|
pascal@20751
|
459 line[0] = substr(line[0],1,length(line[0])-1) op args[2] "]"
|
pascal@20751
|
460 next
|
pascal@20751
|
461 }
|
pascal@20751
|
462 }
|
pascal@20630
|
463 hold=0
|
pascal@20630
|
464 if (/^ mov [sd]i,ax$/) {
|
pascal@20630
|
465 split($2,args,",")
|
pascal@20630
|
466 for (i = 0; i < kept; i++) {
|
pascal@20630
|
467 sub(/ax/,args[1],line[i]); print line[i]
|
pascal@20630
|
468 }
|
pascal@20630
|
469 next
|
pascal@20630
|
470 }
|
pascal@20630
|
471 for (i = 0; i < kept; i++) print line[i]
|
pascal@20630
|
472 }
|
pascal@20634
|
473 else if (hold == 11) {
|
pascal@20634
|
474 if (/^ inc ax$/ || /^ dec ax$/) {
|
pascal@20634
|
475 line[kept++]=$0; next
|
pascal@20634
|
476 }
|
pascal@20634
|
477 split($2,args,",")
|
pascal@20634
|
478 if (/^ mov cl,/) {
|
pascal@20634
|
479 split($2,args,",")
|
pascal@20634
|
480 if (args[2] >= 8) {
|
pascal@20634
|
481 line[kept++]=$0; next
|
pascal@20634
|
482 }
|
pascal@20634
|
483 }
|
pascal@20634
|
484 if (!/^ shl ax,/ || (args[2] != "cl" && args[2] < 8)) {
|
pascal@20634
|
485 print " cbw "
|
pascal@20634
|
486 }
|
pascal@20634
|
487 for (i = 0; i < kept; i++) print line[i]
|
pascal@20634
|
488 hold=kept=0
|
pascal@20634
|
489 }
|
pascal@20634
|
490 else if (hold == 12) {
|
pascal@20634
|
491 hold=0
|
pascal@20634
|
492 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
|
pascal@20634
|
493 print " inc " regs[1]
|
pascal@20634
|
494 print " inc " regs[1]
|
pascal@20634
|
495 }
|
pascal@20634
|
496 else print " add " regs[1] ",2"
|
pascal@20634
|
497 }
|
pascal@20634
|
498 else if (hold == 13) {
|
pascal@20634
|
499 hold=0
|
pascal@20634
|
500 if ($1 != "adc" && $1 != "sbb" && ! /^ jn?[abc]/) {
|
pascal@20634
|
501 print " dec " regs[1]
|
pascal@20634
|
502 print " dec " regs[1]
|
pascal@20634
|
503 }
|
pascal@20634
|
504 else print " sub " regs[1] ",2"
|
pascal@20634
|
505 }
|
pascal@21569
|
506 else if (hold == 14) {
|
pascal@21569
|
507 if (/^ push ax$/) { hold++; next; }
|
pascal@21569
|
508 print " push dx";
|
pascal@21569
|
509 hold=0;
|
pascal@21569
|
510 }
|
pascal@21569
|
511 else if (hold == 15) {
|
pascal@21569
|
512 if (/^ pop eax$/) { hold++; next; }
|
pascal@21569
|
513 print " push dx";
|
pascal@21569
|
514 print " push ax";
|
pascal@21569
|
515 hold=0;
|
pascal@21569
|
516 }
|
pascal@21569
|
517 else if (hold == 16) {
|
pascal@21569
|
518 hold=0;
|
pascal@21569
|
519 if (/^ shr eax,16$/) { print " xchg ax,dx"; next; }
|
pascal@21569
|
520 print " push dx";
|
pascal@21569
|
521 print " push ax";
|
pascal@21569
|
522 print " pop eax";
|
pascal@21569
|
523 }
|
pascal@21569
|
524 else if (hold == 17) {
|
pascal@21569
|
525 hold=0;
|
pascal@21569
|
526 if (/^ cmp ax,-1$/) { print " inc ax"; next; }
|
pascal@21569
|
527 }
|
pascal@21576
|
528 if (/^ call near ptr @fileexist\$/ || # return boolean :
|
pascal@21576
|
529 /^ call near ptr @isoreaddir\$/ || # 0=true, -1=false
|
pascal@21628
|
530 /^ call near ptr @isoreset\$/ ||
|
pascal@21628
|
531 /^ call near ptr @isoopen\$/ ||
|
pascal@21628
|
532 /^ call near ptr @isoreadsector\$/ ||
|
pascal@21628
|
533 /^ call near ptr @strhead\$/ ||
|
pascal@21576
|
534 /^ call near ptr @argstr\$/ ||
|
pascal@21576
|
535 /^ call near ptr @argnum\$/) { print; hold=17; next; }
|
pascal@20458
|
536 s=$0
|
pascal@20458
|
537 # These optimisation may break ZF or CF
|
pascal@20485
|
538 if (/^ sub sp,2$/) { print " push ax"; next }
|
pascal@20485
|
539 if (/^ sub sp,4$/) { print " push ax"; print " push ax"; next }
|
pascal@20485
|
540 if (/^ add sp,4$/) { print " pop cx"; print " pop cx"; next }
|
pascal@20458
|
541 if (/^ mov d*word ptr .*,0$/ || /^ mov dword ptr .*,large 0$/) {
|
pascal@20458
|
542 sub(/mov/,"and",s); print s; next # slower
|
pascal@20458
|
543 }
|
pascal@20458
|
544 if (/^ mov d*word ptr .*,-1$/ || /^ mov dword ptr .*,large -1$/) {
|
pascal@20458
|
545 sub(/mov/,"or",s); print s; next # slower
|
pascal@20458
|
546 }
|
pascal@20458
|
547 if (/^ or .*,0$/ || /^ and .*,-1$/) next
|
pascal@20458
|
548 if (/^ or [abcd]x,/) {
|
pascal@20458
|
549 split($2,args,",")
|
pascal@20458
|
550 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
|
pascal@20458
|
551 print " or " substr(args[1],1,1) "l," args[2]; next
|
pascal@20458
|
552 }
|
pascal@20458
|
553 }
|
pascal@20458
|
554 if (/^ and [abcd]x,/) {
|
pascal@20458
|
555 split($2,args,",")
|
pascal@20459
|
556 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
|
pascal@20458
|
557 print " and " substr(args[1],1,1) "l," args[2]; next
|
pascal@20458
|
558 }
|
pascal@20458
|
559 }
|
pascal@20458
|
560 if (/^ or e[abcd]x,/) {
|
pascal@20458
|
561 split($2,args,",")
|
pascal@20458
|
562 if (args[2] == "large") { args[2] = $3 }
|
pascal@20458
|
563 if (isnum(args[2]) && args[2] >= 0 && args[2] < 256) {
|
pascal@20458
|
564 print " or " substr(args[1],2,1) "l," args[2]; next
|
pascal@20458
|
565 }
|
pascal@20458
|
566 }
|
pascal@20458
|
567 if (/^ and e[abcd]x,/) {
|
pascal@20458
|
568 split($2,args,",")
|
pascal@20458
|
569 if (args[2] == "large") { args[2] = $3 }
|
pascal@20459
|
570 if (isnum(args[2]) && args[2] >= -256 && args[2] < 0) {
|
pascal@20458
|
571 print " and " substr(args[1],2,1) "l," args[2]; next
|
pascal@20458
|
572 }
|
pascal@20458
|
573 }
|
pascal@20458
|
574 if (/^ or e[abcds][ix],/) {
|
pascal@20458
|
575 split($2,args,",")
|
pascal@20458
|
576 if (args[2] == "large") { args[2] = $3 }
|
pascal@20458
|
577 if (isnum(args[2]) && args[2] >= 0 && args[2] < 65536) {
|
pascal@20458
|
578 print " or " substr(args[1],2) "," args[2]; next
|
pascal@20458
|
579 }
|
pascal@20458
|
580 }
|
pascal@20458
|
581 if (/^ and e[abcds][ix],/) {
|
pascal@20458
|
582 split($2,args,",")
|
pascal@20458
|
583 if (args[2] == "large") { args[2] = $3 }
|
pascal@20459
|
584 if (isnum(args[2]) && args[2] >= -65536 && args[2] < 0) {
|
pascal@20458
|
585 print " and " substr(args[1],2) "," args[2]; next
|
pascal@20458
|
586 }
|
pascal@20458
|
587 }
|
pascal@20543
|
588 if (/^ add word ptr/ || /^ sub word ptr/ ||
|
pascal@20544
|
589 /^ add [bcd]x,/ || /^ sub [bcd]x,/) {
|
pascal@20542
|
590 split($0,args,",")
|
pascal@20542
|
591 if (isnum(args[2]) && (args[2] % 256 == 0)) {
|
pascal@20544
|
592 sub(/word ptr/,"byte ptr",s); sub(/x,/,"h,",s) ||
|
pascal@20543
|
593 sub(/\],/,"+1],",s) || sub(/,/,"+1,",s)
|
pascal@20542
|
594 print s "/256"; next
|
pascal@20542
|
595 }
|
pascal@20542
|
596 }
|
pascal@20546
|
597 if (/^ add dword ptr/ || /^ sub dword ptr/) {
|
pascal@20458
|
598 split($0,args,",")
|
pascal@20543
|
599 if (args[2] == "large") { args[2] = $3 }
|
pascal@20458
|
600 if (isnum(args[2])) {
|
pascal@20546
|
601 if (args[2] % 16777216 == 0) {
|
pascal@20546
|
602 sub(/dword/,"byte",s)
|
pascal@20543
|
603 sub(/\],/,"+3],",s) || sub(/,/,"+3,",s)
|
pascal@20458
|
604 print s "/16777216"; next
|
pascal@20458
|
605 }
|
pascal@20458
|
606 if (args[2] % 65536 == 0) {
|
pascal@20546
|
607 sub(/dword/,"word",s)
|
pascal@20543
|
608 sub(/\],/,"+2],",s) || sub(/,/,"+2,",s)
|
pascal@20458
|
609 print s "/65536"; next
|
pascal@20458
|
610 }
|
pascal@20458
|
611 }
|
pascal@20458
|
612 }
|
pascal@20458
|
613 if (/^ mov e.x,/) {
|
pascal@20458
|
614 split($2,args,",")
|
pascal@20458
|
615 r=args[1]
|
pascal@20458
|
616 if (args[2] == "large") { args[2] = $3 }
|
pascal@20458
|
617 if (isnum(args[2]) && args[2] % 65536 == args[2]) {
|
pascal@20458
|
618 if (args[2] % 256 == args[2] || args[2] % 256 == 0) {
|
pascal@20458
|
619 print " xor " r "," r
|
pascal@20458
|
620 if (args[2] == 0) next
|
pascal@20458
|
621 x=" mov " substr(r,2,1)
|
pascal@20458
|
622 if (args[2] % 256 == 0) {
|
pascal@20458
|
623 print x "h," args[2] "/256"
|
pascal@20458
|
624 }
|
pascal@20458
|
625 else { print x "l," args[2] }
|
pascal@20458
|
626 next
|
pascal@20458
|
627 }
|
pascal@20458
|
628 }
|
pascal@20458
|
629 }
|
pascal@21576
|
630 if (afterjmp) print ";" $0
|
pascal@21576
|
631 else print
|
pascal@21754
|
632 if (/^ jmp / || /^ call near ptr _boot_kernel/ ||
|
pascal@21754
|
633 /^ call near ptr @die$qpxzc/) afterjmp=1
|
pascal@20458
|
634 }
|