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Commit | Line | Data |
---|---|---|
1d5d0ae9 | 1 | error=abort\r |
2 | \r | |
3 | // NOTE: THIS MAY NEED TO BE ADJUSTED\r | |
4 | // change to reflect the total amount of ram in your system\r | |
5 | define /r GetMaxMem()\r | |
6 | {\r | |
7 | return 0x10000000; // 256 MB\r | |
8 | }\r | |
9 | .\r | |
10 | \r | |
11 | define /r GetWord(Addr)\r | |
12 | {\r | |
13 | unsigned long data;\r | |
14 | \r | |
15 | if( (Addr & 0x2) == 0 )\r | |
16 | {\r | |
17 | data = dword(Addr);\r | |
18 | data = data & 0xffff;\r | |
19 | //$printf "getword data is %x\n", data$;\r | |
20 | return data;\r | |
21 | }\r | |
22 | else\r | |
23 | {\r | |
24 | data = dword(Addr & 0xfffffffc);\r | |
25 | //data = data >> 16;\r | |
26 | data = data / 0x10000;\r | |
27 | //$printf "getword data is %x (1)\n", data$;\r | |
28 | return data;\r | |
29 | }\r | |
30 | }\r | |
31 | .\r | |
32 | \r | |
33 | define /r ProcessPE32(imgstart)\r | |
34 | unsigned long imgstart;\r | |
35 | {\r | |
36 | unsigned long filehdrstart;\r | |
37 | unsigned long debugdirentryrva;\r | |
38 | unsigned long debugtype;\r | |
39 | unsigned long debugrva;\r | |
40 | unsigned long dwarfsig;\r | |
41 | unsigned long baseofcode;\r | |
42 | unsigned long baseofdata;\r | |
43 | unsigned long elfbase;\r | |
44 | char *elfpath;\r | |
45 | \r | |
46 | $printf "PE32 image found at %x",imgstart$;\r | |
47 | \r | |
48 | //$printf "PE file hdr offset %x",dword(imgstart+0x3C)$;\r | |
49 | \r | |
50 | // offset from dos hdr to PE file hdr\r | |
51 | filehdrstart = imgstart + dword(imgstart+0x3C);\r | |
52 | \r | |
53 | // offset to debug dir in PE hdrs\r | |
54 | //$printf "debug dir is at %x",(filehdrstart+0xA8)$;\r | |
55 | debugdirentryrva = dword(filehdrstart + 0xA8);\r | |
56 | if(debugdirentryrva == 0)\r | |
57 | {\r | |
58 | $printf "no debug dir for image at %x",imgstart$;\r | |
59 | return;\r | |
60 | }\r | |
61 | \r | |
62 | //$printf "debug dir entry rva is %x",debugdirentryrva$;\r | |
63 | \r | |
64 | debugtype = dword(imgstart + debugdirentryrva + 0xc);\r | |
65 | if( (debugtype != 0xdf) && (debugtype != 0x2) )\r | |
66 | {\r | |
67 | $printf "debug type is not dwarf for image at %x",imgstart$;\r | |
68 | $printf "debug type is %x",debugtype$;\r | |
69 | return;\r | |
70 | }\r | |
71 | \r | |
72 | debugrva = dword(imgstart + debugdirentryrva + 0x14);\r | |
73 | dwarfsig = dword(imgstart + debugrva);\r | |
74 | if(dwarfsig != 0x66727764)\r | |
75 | {\r | |
76 | $printf "dwarf debug signature not found for image at %x",imgstart$;\r | |
77 | return;\r | |
78 | }\r | |
79 | \r | |
80 | elfpath = (char *)(imgstart + debugrva + 0xc);\r | |
81 | \r | |
82 | baseofcode = imgstart + dword(filehdrstart + 0x28);\r | |
83 | baseofdata = imgstart + dword(filehdrstart + 0x2c);\r | |
84 | \r | |
85 | if( (baseofcode < baseofdata) && (baseofcode != 0) )\r | |
86 | {\r | |
87 | elfbase = baseofcode;\r | |
88 | }\r | |
89 | else\r | |
90 | {\r | |
91 | elfbase = baseofdata;\r | |
92 | }\r | |
93 | \r | |
94 | $printf "found path %s",elfpath$;\r | |
95 | $fprintf 50, "load /ni /np /a %s &0x%x\n",elfpath,elfbase$;\r | |
96 | }\r | |
97 | .\r | |
98 | \r | |
99 | define /r ProcessTE(imgstart)\r | |
100 | unsigned long imgstart;\r | |
101 | {\r | |
102 | unsigned long strippedsize;\r | |
103 | unsigned long debugdirentryrva;\r | |
104 | unsigned long debugtype;\r | |
105 | unsigned long debugrva;\r | |
106 | unsigned long dwarfsig;\r | |
107 | unsigned long elfbase;\r | |
108 | char *elfpath;\r | |
109 | \r | |
110 | $printf "TE image found at %x",imgstart$;\r | |
111 | \r | |
112 | // determine pe header bytes removed to account for in rva references\r | |
113 | //strippedsize = word(imgstart + 0x6);\r | |
114 | //strippedsize = (dword(imgstart + 0x4) & 0xffff0000) >> 16;\r | |
115 | strippedsize = (dword(imgstart + 0x4) & 0xffff0000) / 0x10000;\r | |
116 | strippedsize = strippedsize - 0x28;\r | |
117 | \r | |
118 | debugdirentryrva = dword(imgstart + 0x20);\r | |
119 | if(debugdirentryrva == 0)\r | |
120 | {\r | |
121 | $printf "no debug dir for image at %x",imgstart$;\r | |
122 | return;\r | |
123 | }\r | |
124 | debugdirentryrva = debugdirentryrva - strippedsize;\r | |
125 | \r | |
126 | //$printf "debug dir entry rva is %x",debugdirentryrva$;\r | |
127 | \r | |
128 | debugtype = dword(imgstart + debugdirentryrva + 0xc);\r | |
129 | if( (debugtype != 0xdf) && (debugtype != 0x2) )\r | |
130 | {\r | |
131 | $printf "debug type is not dwarf for image at %x",imgstart$;\r | |
132 | $printf "debug type is %x",debugtype$;\r | |
133 | return;\r | |
134 | }\r | |
135 | \r | |
136 | debugrva = dword(imgstart + debugdirentryrva + 0x14);\r | |
137 | debugrva = debugrva - strippedsize;\r | |
138 | dwarfsig = dword(imgstart + debugrva);\r | |
139 | if( (dwarfsig != 0x66727764) && (dwarfsig != 0x3031424e) )\r | |
140 | {\r | |
141 | $printf "dwarf debug signature not found for image at %x",imgstart$;\r | |
142 | $printf "found %x", dwarfsig$;\r | |
143 | return;\r | |
144 | }\r | |
145 | \r | |
146 | if( dwarfsig == 0x66727764 )\r | |
147 | {\r | |
148 | elfpath = (char *)(imgstart + debugrva + 0xc);\r | |
149 | $printf "looking for elf path at 0x%x", elfpath$; \r | |
150 | }\r | |
151 | else \r | |
152 | {\r | |
153 | elfpath = (char *)(imgstart + debugrva + 0x10);\r | |
154 | $printf "looking for elf path at 0x%x", elfpath$; \r | |
155 | }\r | |
156 | \r | |
157 | // elf base is baseofcode (we hope that for TE images it's not baseofdata)\r | |
158 | elfbase = imgstart + dword(imgstart + 0xc) - strippedsize;\r | |
159 | \r | |
160 | $printf "found path %s",elfpath$;\r | |
161 | $fprintf 50, "load /ni /np /a %s &0x%x\n",elfpath,elfbase$;\r | |
162 | }\r | |
163 | .\r | |
164 | \r | |
165 | define /r ProcessFvSection(secstart)\r | |
166 | unsigned long secstart;\r | |
167 | {\r | |
168 | unsigned long sectionsize;\r | |
169 | unsigned char sectiontype;\r | |
170 | \r | |
171 | sectionsize = dword(secstart);\r | |
172 | //sectiontype = (sectionsize & 0xff000000) >> 24;\r | |
173 | sectiontype = (sectionsize & 0xff000000) / 0x1000000;\r | |
174 | sectionsize = sectionsize & 0x00ffffff;\r | |
175 | \r | |
176 | $printf "fv section at %x size %x type %x",secstart,sectionsize,sectiontype$;\r | |
177 | \r | |
178 | if(sectiontype == 0x10) // PE32\r | |
179 | {\r | |
180 | ProcessPE32(secstart+0x4);\r | |
181 | }\r | |
182 | else if(sectiontype == 0x12) // TE\r | |
183 | {\r | |
184 | ProcessTE(secstart+0x4); \r | |
185 | }\r | |
186 | }\r | |
187 | .\r | |
188 | \r | |
189 | define /r ProcessFfsFile(ffsfilestart)\r | |
190 | unsigned long ffsfilestart;\r | |
191 | {\r | |
192 | unsigned long ffsfilesize;\r | |
193 | unsigned long ffsfiletype;\r | |
194 | unsigned long secoffset;\r | |
195 | unsigned long secsize;\r | |
196 | \r | |
197 | //ffsfiletype = byte(ffsfilestart + 0x12);\r | |
198 | ffsfilesize = dword(ffsfilestart + 0x14);\r | |
199 | //ffsfiletype = (ffsfilesize & 0xff000000) >> 24;\r | |
200 | ffsfiletype = (ffsfilesize & 0xff000000) / 0x1000000;\r | |
201 | ffsfilesize = ffsfilesize & 0x00ffffff;\r | |
202 | \r | |
203 | if(ffsfiletype == 0xff) return;\r | |
204 | \r | |
205 | $printf "ffs file at %x size %x type %x",ffsfilestart,ffsfilesize,ffsfiletype$;\r | |
206 | \r | |
207 | secoffset = ffsfilestart + 0x18;\r | |
208 | \r | |
209 | // loop through sections in file\r | |
210 | while(secoffset < (ffsfilestart + ffsfilesize))\r | |
211 | {\r | |
212 | // process fv section and increment section offset by size\r | |
213 | secsize = dword(secoffset) & 0x00ffffff;\r | |
214 | ProcessFvSection(secoffset);\r | |
215 | secoffset = secoffset + secsize;\r | |
216 | \r | |
217 | // align to next 4 byte boundary\r | |
218 | if( (secoffset & 0x3) != 0 )\r | |
219 | {\r | |
220 | secoffset = secoffset + (0x4 - (secoffset & 0x3));\r | |
221 | }\r | |
222 | } // end section loop\r | |
223 | }\r | |
224 | .\r | |
225 | \r | |
226 | define /r LoadPeiSec()\r | |
227 | {\r | |
228 | unsigned long fvbase;\r | |
229 | unsigned long fvlen;\r | |
230 | unsigned long fvsig;\r | |
231 | unsigned long ffsoffset;\r | |
232 | unsigned long ffsfilesize;\r | |
233 | \r | |
234 | fvbase = FindFv();\r | |
235 | $printf "fvbase %x",fvbase$;\r | |
236 | \r | |
237 | // get fv signature field\r | |
238 | fvsig = dword(fvbase + 0x28);\r | |
239 | if(fvsig != 0x4856465F)\r | |
240 | {\r | |
241 | $printf "FV does not have proper signature, exiting"$;\r | |
242 | return 0;\r | |
243 | }\r | |
244 | \r | |
245 | $printf "FV signature found"$;\r | |
246 | \r | |
247 | $fopen 50, 'C:\loadfiles.inc'$;\r | |
248 | \r | |
249 | fvlen = dword(fvbase + 0x20);\r | |
250 | \r | |
251 | // first ffs file is after fv header, use headerlength field\r | |
252 | //ffsoffset = (dword(fvbase + 0x30) & 0xffff0000) >> 16;\r | |
253 | ffsoffset = (dword(fvbase + 0x30) & 0xffff0000) / 0x10000;\r | |
254 | ffsoffset = fvbase + GetWord(fvbase + 0x30);\r | |
255 | \r | |
256 | // loop through ffs files\r | |
257 | while(ffsoffset < (fvbase+fvlen))\r | |
258 | {\r | |
259 | // process ffs file and increment by ffs file size field\r | |
260 | ProcessFfsFile(ffsoffset); \r | |
261 | ffsfilesize = (dword(ffsoffset + 0x14) & 0x00ffffff);\r | |
262 | if(ffsfilesize == 0)\r | |
263 | {\r | |
264 | break;\r | |
265 | }\r | |
266 | ffsoffset = ffsoffset + ffsfilesize;\r | |
267 | \r | |
268 | \r | |
269 | // align to next 8 byte boundary\r | |
270 | if( (ffsoffset & 0x7) != 0 )\r | |
271 | {\r | |
272 | ffsoffset = ffsoffset + (0x8 - (ffsoffset & 0x7));\r | |
273 | }\r | |
274 | \r | |
275 | } // end fv ffs loop\r | |
276 | \r | |
277 | $vclose 50$;\r | |
278 | \r | |
279 | }\r | |
280 | .\r | |
281 | \r | |
282 | define /r FindSystemTable(TopOfRam)\r | |
283 | unsigned long TopOfRam;\r | |
284 | {\r | |
285 | unsigned long offset;\r | |
286 | \r | |
287 | $printf "FindSystemTable"$;\r | |
288 | $printf "top of mem is %x",TopOfRam$;\r | |
289 | \r | |
290 | offset = TopOfRam;\r | |
291 | \r | |
292 | // align to highest 4MB boundary\r | |
293 | offset = offset & 0xFFC00000;\r | |
294 | \r | |
295 | // start at top and look on 4MB boundaries for system table ptr structure\r | |
296 | while(offset > 0)\r | |
297 | {\r | |
298 | //$printf "checking %x",offset$;\r | |
299 | //$printf "value is %x",dword(offset)$;\r | |
300 | \r | |
301 | // low signature match\r | |
302 | if(dword(offset) == 0x20494249)\r | |
303 | {\r | |
304 | // high signature match\r | |
305 | if(dword(offset+4) == 0x54535953)\r | |
306 | {\r | |
307 | // less than 4GB?\r | |
308 | if(dword(offset+0x0c) == 0)\r | |
309 | {\r | |
310 | // less than top of ram?\r | |
311 | if(dword(offset+8) < TopOfRam)\r | |
312 | {\r | |
313 | return(dword(offset+8));\r | |
314 | }\r | |
315 | }\r | |
316 | }\r | |
317 | \r | |
318 | }\r | |
319 | \r | |
320 | if(offset < 0x400000) break;\r | |
321 | offset = offset - 0x400000; \r | |
322 | }\r | |
323 | \r | |
324 | return 0;\r | |
325 | }\r | |
326 | .\r | |
327 | \r | |
328 | define /r ProcessImage(ImageBase)\r | |
329 | unsigned long ImageBase;\r | |
330 | {\r | |
331 | $printf "ProcessImage %x", ImageBase$;\r | |
332 | }\r | |
333 | .\r | |
334 | \r | |
335 | define /r FindDebugInfo(SystemTable)\r | |
336 | unsigned long SystemTable;\r | |
337 | {\r | |
338 | unsigned long CfgTableEntries;\r | |
339 | unsigned long ConfigTable;\r | |
340 | unsigned long i;\r | |
341 | unsigned long offset;\r | |
342 | unsigned long dbghdr;\r | |
343 | unsigned long dbgentries;\r | |
344 | unsigned long dbgptr;\r | |
345 | unsigned long dbginfo;\r | |
346 | unsigned long loadedimg;\r | |
347 | \r | |
348 | $printf "FindDebugInfo"$;\r | |
349 | \r | |
350 | dbgentries = 0;\r | |
351 | CfgTableEntries = dword(SystemTable + 0x40);\r | |
352 | ConfigTable = dword(SystemTable + 0x44);\r | |
353 | \r | |
354 | $printf "config table is at %x (%d entries)", ConfigTable, CfgTableEntries$;\r | |
355 | \r | |
356 | // now search for debug info entry with guid 49152E77-1ADA-4764-B7A2-7AFEFED95E8B\r | |
357 | // 0x49152E77 0x47641ADA 0xFE7AA2B7 0x8B5ED9FE\r | |
358 | for(i=0; i<CfgTableEntries; i++)\r | |
359 | {\r | |
360 | offset = ConfigTable + (i*0x14);\r | |
361 | if(dword(offset) == 0x49152E77)\r | |
362 | {\r | |
363 | if(dword(offset+4) == 0x47641ADA)\r | |
364 | {\r | |
365 | if(dword(offset+8) == 0xFE7AA2B7)\r | |
366 | {\r | |
367 | if(dword(offset+0xc) == 0x8B5ED9FE)\r | |
368 | {\r | |
369 | dbghdr = dword(offset+0x10);\r | |
370 | dbgentries = dword(dbghdr + 4);\r | |
371 | dbgptr = dword(dbghdr + 8);\r | |
372 | }\r | |
373 | }\r | |
374 | }\r | |
375 | }\r | |
376 | }\r | |
377 | \r | |
378 | if(dbgentries == 0)\r | |
379 | {\r | |
380 | $printf "no debug entries found"$;\r | |
381 | return;\r | |
382 | }\r | |
383 | \r | |
384 | $printf "debug table at %x (%d entries)", dbgptr, dbgentries$;\r | |
385 | \r | |
386 | for(i=0; i<dbgentries; i++)\r | |
387 | {\r | |
388 | dbginfo = dword(dbgptr + (i*4));\r | |
389 | if(dbginfo != 0)\r | |
390 | {\r | |
391 | if(dword(dbginfo) == 1) // normal debug info type\r | |
392 | {\r | |
393 | loadedimg = dword(dbginfo + 4);\r | |
394 | ProcessPE32(dword(loadedimg + 0x20));\r | |
395 | }\r | |
396 | }\r | |
397 | }\r | |
398 | }\r | |
399 | .\r | |
400 | \r | |
401 | define /r LoadDxe()\r | |
402 | {\r | |
403 | unsigned long maxmem;\r | |
404 | unsigned long systbl;\r | |
405 | \r | |
406 | $printf "LoadDxe"$;\r | |
407 | \r | |
408 | $fopen 50, 'C:\loadfiles.inc'$;\r | |
409 | \r | |
410 | maxmem = GetMaxMem();\r | |
411 | systbl = FindSystemTable(maxmem);\r | |
412 | if(systbl != 0)\r | |
413 | {\r | |
414 | $printf "found system table at %x",systbl$;\r | |
415 | FindDebugInfo(systbl);\r | |
416 | }\r | |
417 | \r | |
418 | $vclose 50$;\r | |
419 | }\r | |
420 | .\r | |
421 | \r | |
422 | define /r LoadRuntimeDxe()\r | |
423 | \r | |
424 | {\r | |
425 | unsigned long maxmem;\r | |
426 | unsigned long SystemTable;\r | |
427 | unsigned long CfgTableEntries;\r | |
428 | unsigned long ConfigTable;\r | |
429 | unsigned long i;\r | |
430 | unsigned long offset;\r | |
431 | unsigned long numentries;\r | |
432 | unsigned long RuntimeDebugInfo;\r | |
433 | unsigned long DebugInfoOffset;\r | |
434 | unsigned long imgbase;\r | |
435 | \r | |
436 | $printf "LoadRuntimeDxe"$;\r | |
437 | \r | |
438 | $fopen 50, 'C:\loadfiles.inc'$;\r | |
439 | \r | |
440 | RuntimeDebugInfo = 0x80000010;\r | |
441 | \r | |
442 | if(RuntimeDebugInfo != 0)\r | |
443 | {\r | |
444 | numentries = dword(RuntimeDebugInfo);\r | |
445 | \r | |
446 | $printf "runtime debug info is at %x (%d entries)", RuntimeDebugInfo, numentries$;\r | |
447 | \r | |
448 | DebugInfoOffset = RuntimeDebugInfo + 0x4;\r | |
449 | for(i=0; i<numentries; i++)\r | |
450 | {\r | |
451 | imgbase = dword(DebugInfoOffset);\r | |
452 | if(imgbase != 0)\r | |
453 | {\r | |
454 | $printf "found image at %x",imgbase$;\r | |
455 | ProcessPE32(imgbase);\r | |
456 | }\r | |
457 | DebugInfoOffset = DebugInfoOffset + 0x4;\r | |
458 | }\r | |
459 | }\r | |
460 | \r | |
461 | $vclose 50$;\r | |
462 | }\r | |
463 | .\r |