Rev 1198 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1159 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
||
3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
||
4 | ;; Distributed under terms of the GNU General Public License ;; |
||
5 | ;; ;; |
||
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
7 | |||
1206 | hidnplayr | 8 | $Revision: 1206 $ |
1159 | hidnplayr | 9 | |
10 | |||
11 | ; diamond, 2006 |
||
12 | sys_debug_services: |
||
1198 | clevermous | 13 | cmp eax, 9 |
14 | ja @f |
||
15 | jmp dword [sys_debug_services_table+eax*4] |
||
16 | @@: ret |
||
1159 | hidnplayr | 17 | sys_debug_services_table: |
1198 | clevermous | 18 | dd debug_set_event_data |
19 | dd debug_getcontext |
||
20 | dd debug_setcontext |
||
21 | dd debug_detach |
||
22 | dd debug_suspend |
||
23 | dd debug_resume |
||
24 | dd debug_read_process_memory |
||
25 | dd debug_write_process_memory |
||
26 | dd debug_terminate |
||
27 | dd debug_set_drx |
||
1159 | hidnplayr | 28 | |
29 | debug_set_event_data: |
||
30 | ; in: ebx = pointer |
||
31 | ; destroys eax |
||
32 | mov eax, [current_slot] |
||
33 | mov [eax+APPDATA.dbg_event_mem], ebx |
||
1198 | clevermous | 34 | ret |
1159 | hidnplayr | 35 | |
36 | get_debuggee_slot: |
||
37 | ; in: ebx=PID |
||
38 | ; out: CF=1 if error |
||
39 | ; CF=0 and eax=slot*0x20 if ok |
||
40 | ; out: interrupts disabled |
||
1198 | clevermous | 41 | cli |
42 | mov eax, ebx |
||
43 | call pid_to_slot |
||
44 | test eax, eax |
||
45 | jz .ret_bad |
||
46 | shl eax, 5 |
||
47 | push ebx |
||
1159 | hidnplayr | 48 | mov ebx, [CURRENT_TASK] |
49 | cmp [SLOT_BASE+eax*8+APPDATA.debugger_slot], ebx |
||
1198 | clevermous | 50 | pop ebx |
51 | jnz .ret_bad |
||
52 | ; clc ; automatically |
||
53 | ret |
||
1159 | hidnplayr | 54 | .ret_bad: |
1198 | clevermous | 55 | stc |
56 | ret |
||
1159 | hidnplayr | 57 | |
58 | debug_detach: |
||
59 | ; in: ebx=pid |
||
60 | ; destroys eax,ebx |
||
1198 | clevermous | 61 | call get_debuggee_slot |
62 | jc .ret |
||
1159 | hidnplayr | 63 | and dword [eax*8+SLOT_BASE+APPDATA.debugger_slot], 0 |
1198 | clevermous | 64 | call do_resume |
1159 | hidnplayr | 65 | .ret: |
1198 | clevermous | 66 | sti |
67 | ret |
||
1159 | hidnplayr | 68 | |
69 | debug_terminate: |
||
70 | ; in: ebx=pid |
||
1198 | clevermous | 71 | call get_debuggee_slot |
72 | jc debug_detach.ret |
||
73 | mov ecx, eax |
||
74 | shr ecx, 5 |
||
75 | push 2 |
||
76 | pop ebx |
||
77 | jmp sys_system |
||
1159 | hidnplayr | 78 | |
79 | debug_suspend: |
||
80 | ; in: ebx=pid |
||
81 | ; destroys eax,ebx |
||
82 | cli |
||
83 | mov eax, ebx |
||
84 | call pid_to_slot |
||
85 | shl eax, 5 |
||
86 | jz .ret |
||
87 | mov bl, [CURRENT_TASK+eax+TASKDATA.state] ; process state |
||
1198 | clevermous | 88 | test bl, bl |
89 | jz .1 |
||
90 | cmp bl, 5 |
||
91 | jnz .ret |
||
92 | mov bl, 2 |
||
1159 | hidnplayr | 93 | .2: mov [CURRENT_TASK+eax+TASKDATA.state], bl |
94 | .ret: |
||
1198 | clevermous | 95 | sti |
96 | ret |
||
1159 | hidnplayr | 97 | .1: |
1198 | clevermous | 98 | inc ebx |
99 | jmp .2 |
||
1159 | hidnplayr | 100 | |
101 | do_resume: |
||
102 | mov bl, [CURRENT_TASK+eax+TASKDATA.state] |
||
1198 | clevermous | 103 | cmp bl, 1 |
104 | jz .1 |
||
105 | cmp bl, 2 |
||
106 | jnz .ret |
||
107 | mov bl, 5 |
||
1159 | hidnplayr | 108 | .2: mov [CURRENT_TASK+eax+TASKDATA.state], bl |
1198 | clevermous | 109 | .ret: ret |
110 | .1: dec ebx |
||
111 | jmp .2 |
||
1159 | hidnplayr | 112 | |
113 | debug_resume: |
||
114 | ; in: ebx=pid |
||
115 | ; destroys eax,ebx |
||
116 | cli |
||
117 | mov eax, ebx |
||
118 | call pid_to_slot |
||
119 | shl eax, 5 |
||
120 | jz .ret |
||
121 | call do_resume |
||
1198 | clevermous | 122 | .ret: sti |
123 | ret |
||
1159 | hidnplayr | 124 | |
125 | debug_getcontext: |
||
126 | ; in: |
||
127 | ; ebx=pid |
||
128 | ; ecx=sizeof(CONTEXT) |
||
129 | ; edx->CONTEXT |
||
130 | ; destroys eax,ecx,edx,esi,edi |
||
1198 | clevermous | 131 | cmp ecx, 28h |
132 | jnz .ret |
||
133 | push ebx |
||
134 | mov ebx, edx |
||
135 | call check_region |
||
136 | pop ebx |
||
137 | dec eax |
||
138 | jnz .ret |
||
139 | call get_debuggee_slot |
||
140 | jc .ret |
||
1159 | hidnplayr | 141 | mov eax, [eax*8+SLOT_BASE+APPDATA.pl0_stack] |
142 | lea esi, [eax+RING0_STACK_SIZE] |
||
143 | mov edi, edx |
||
144 | .ring0: |
||
145 | ; note that following code assumes that all interrupt/exception handlers |
||
146 | ; saves ring-3 context by pushad in this order |
||
147 | ; top of ring0 stack: ring3 stack ptr (ss+esp), iret data (cs+eip+eflags), pushad |
||
148 | sub esi, 8+12+20h |
||
149 | lodsd ;edi |
||
1198 | clevermous | 150 | mov [edi+24h], eax |
1159 | hidnplayr | 151 | lodsd ;esi |
1198 | clevermous | 152 | mov [edi+20h], eax |
1159 | hidnplayr | 153 | lodsd ; ebp |
1198 | clevermous | 154 | mov [edi+1Ch], eax |
1159 | hidnplayr | 155 | lodsd ;esp |
156 | lodsd ;ebx |
||
1198 | clevermous | 157 | mov [edi+14h], eax |
1159 | hidnplayr | 158 | lodsd ;edx |
1198 | clevermous | 159 | mov [edi+10h], eax |
1159 | hidnplayr | 160 | lodsd ;ecx |
1198 | clevermous | 161 | mov [edi+0Ch], eax |
1159 | hidnplayr | 162 | lodsd ;eax |
1198 | clevermous | 163 | mov [edi+8], eax |
1159 | hidnplayr | 164 | lodsd ;eip |
1198 | clevermous | 165 | mov [edi], eax |
1159 | hidnplayr | 166 | lodsd ;cs |
167 | lodsd ;eflags |
||
1198 | clevermous | 168 | mov [edi+4], eax |
1159 | hidnplayr | 169 | lodsd ;esp |
1198 | clevermous | 170 | mov [edi+18h], eax |
1159 | hidnplayr | 171 | .ret: |
1198 | clevermous | 172 | sti |
173 | ret |
||
1159 | hidnplayr | 174 | |
175 | debug_setcontext: |
||
176 | ; in: |
||
177 | ; ebx=pid |
||
178 | ; ecx=sizeof(CONTEXT) |
||
179 | ; edx->CONTEXT |
||
180 | ; destroys eax,ecx,edx,esi,edi |
||
1198 | clevermous | 181 | cmp ecx, 28h |
182 | jnz .ret |
||
183 | push ebx |
||
184 | mov ebx, edx |
||
185 | call check_region |
||
186 | pop ebx |
||
187 | dec eax |
||
188 | jnz .ret |
||
189 | call get_debuggee_slot |
||
190 | jc .stiret |
||
1159 | hidnplayr | 191 | mov eax, [eax*8+SLOT_BASE+APPDATA.pl0_stack] |
192 | lea edi, [eax+RING0_STACK_SIZE] |
||
193 | mov esi, edx |
||
194 | .ring0: |
||
195 | sub edi, 8+12+20h |
||
196 | mov eax, [esi+24h] ;edi |
||
1198 | clevermous | 197 | stosd |
1159 | hidnplayr | 198 | mov eax, [esi+20h] ;esi |
1198 | clevermous | 199 | stosd |
1159 | hidnplayr | 200 | mov eax, [esi+1Ch] ;ebp |
1198 | clevermous | 201 | stosd |
1159 | hidnplayr | 202 | scasd |
203 | mov eax, [esi+14h] ;ebx |
||
1198 | clevermous | 204 | stosd |
1159 | hidnplayr | 205 | mov eax, [esi+10h] ;edx |
1198 | clevermous | 206 | stosd |
1159 | hidnplayr | 207 | mov eax, [esi+0Ch] ;ecx |
1198 | clevermous | 208 | stosd |
1159 | hidnplayr | 209 | mov eax, [esi+8] ;eax |
1198 | clevermous | 210 | stosd |
1159 | hidnplayr | 211 | mov eax, [esi] ;eip |
1198 | clevermous | 212 | stosd |
213 | scasd |
||
1159 | hidnplayr | 214 | mov eax, [esi+4] ;eflags |
1198 | clevermous | 215 | stosd |
1159 | hidnplayr | 216 | mov eax, [esi+18h] ;esp |
1198 | clevermous | 217 | stosd |
1159 | hidnplayr | 218 | .stiret: |
1198 | clevermous | 219 | sti |
1159 | hidnplayr | 220 | .ret: |
1198 | clevermous | 221 | ret |
1159 | hidnplayr | 222 | |
223 | debug_set_drx: |
||
1198 | clevermous | 224 | call get_debuggee_slot |
225 | jc .errret |
||
226 | mov ebp, eax |
||
1159 | hidnplayr | 227 | lea eax, [eax*8+SLOT_BASE+APPDATA.dbg_regs] |
228 | ; [eax]=dr0, [eax+4]=dr1, [eax+8]=dr2, [eax+C]=dr3 |
||
229 | ; [eax+10]=dr7 |
||
230 | cmp edx, OS_BASE |
||
231 | jae .errret |
||
1198 | clevermous | 232 | cmp cl, 3 |
233 | ja .errret |
||
234 | mov ebx, dr7 |
||
235 | shr ebx, cl |
||
236 | shr ebx, cl |
||
237 | test ebx, 2 ; bit 1+2*index = G0..G3, global break enable |
||
238 | jnz .errret2 |
||
239 | test ch, ch |
||
240 | jns .new |
||
1159 | hidnplayr | 241 | ; clear breakpoint |
1198 | clevermous | 242 | movzx ecx, cl |
243 | add ecx, ecx |
||
244 | and dword [eax+ecx*2], 0 ; clear DR |
||
245 | btr dword [eax+10h], ecx ; clear L bit |
||
246 | test byte [eax+10h], 55h |
||
247 | jnz .okret |
||
1159 | hidnplayr | 248 | ; imul eax, ebp, tss_step/32 |
249 | ; and byte [eax + tss_data + TSS._trap], not 1 |
||
250 | and [ebp*8 + SLOT_BASE+APPDATA.dbg_state], not 1 |
||
251 | .okret: |
||
1198 | clevermous | 252 | and dword [esp+36], 0 |
253 | sti |
||
254 | ret |
||
1159 | hidnplayr | 255 | .errret: |
1198 | clevermous | 256 | sti |
257 | mov dword [esp+36], 1 |
||
258 | ret |
||
1159 | hidnplayr | 259 | .errret2: |
1198 | clevermous | 260 | sti |
261 | mov dword [esp+36], 2 |
||
262 | ret |
||
1159 | hidnplayr | 263 | .new: |
264 | ; add new breakpoint |
||
265 | ; cl=index; ch=flags; edx=address |
||
1198 | clevermous | 266 | test ch, 0xF0 |
267 | jnz .errret |
||
268 | mov bl, ch |
||
269 | and bl, 3 |
||
270 | cmp bl, 2 |
||
271 | jz .errret |
||
272 | mov bl, ch |
||
273 | shr bl, 2 |
||
274 | cmp bl, 2 |
||
275 | jz .errret |
||
276 | test dl, bl |
||
277 | jnz .errret |
||
278 | or byte [eax+10h+1], 3 ; set GE and LE flags |
||
279 | movzx ebx, ch |
||
280 | movzx ecx, cl |
||
281 | add ecx, ecx |
||
282 | bts dword [eax+10h], ecx ; set L flag |
||
283 | add ecx, ecx |
||
284 | mov [eax+ecx], edx ; set DR |
||
285 | shl ebx, cl |
||
286 | mov edx, 0xF |
||
287 | shl edx, cl |
||
288 | not edx |
||
289 | and [eax+10h+2], dx |
||
290 | or [eax+10h+2], bx ; set R/W and LEN fields |
||
1159 | hidnplayr | 291 | ; imul eax, ebp, tss_step/32 |
292 | ; or byte [eax + tss_data + TSS._trap], 1 |
||
293 | or [ebp*8 + SLOT_BASE+APPDATA.dbg_state], 1 |
||
1198 | clevermous | 294 | jmp .okret |
1159 | hidnplayr | 295 | |
296 | debug_read_process_memory: |
||
297 | ; in: |
||
298 | ; ebx=pid |
||
299 | ; ecx=length |
||
300 | ; esi->buffer in debugger |
||
301 | ; edx=address in debuggee |
||
302 | ; out: [esp+36]=sizeof(read) |
||
303 | ; destroys all |
||
1198 | clevermous | 304 | push ebx |
305 | mov ebx, esi |
||
306 | call check_region |
||
307 | pop ebx |
||
308 | dec eax |
||
309 | jnz .err |
||
310 | call get_debuggee_slot |
||
311 | jc .err |
||
312 | shr eax, 5 |
||
313 | mov ebx, esi |
||
314 | call read_process_memory |
||
315 | sti |
||
316 | mov dword [esp+36], eax |
||
317 | ret |
||
1159 | hidnplayr | 318 | .err: |
1198 | clevermous | 319 | or dword [esp+36], -1 |
320 | ret |
||
1159 | hidnplayr | 321 | |
322 | debug_write_process_memory: |
||
323 | ; in: |
||
324 | ; ebx=pid |
||
325 | ; ecx=length |
||
326 | ; esi->buffer in debugger |
||
327 | ; edx=address in debuggee |
||
328 | ; out: [esp+36]=sizeof(write) |
||
329 | ; destroys all |
||
1198 | clevermous | 330 | push ebx |
331 | mov ebx, esi |
||
332 | call check_region |
||
333 | pop ebx |
||
334 | dec eax |
||
335 | jnz debug_read_process_memory.err |
||
336 | call get_debuggee_slot |
||
337 | jc debug_read_process_memory.err |
||
338 | shr eax, 5 |
||
339 | mov ebx, esi |
||
340 | call write_process_memory |
||
341 | sti |
||
342 | mov [esp+36], eax |
||
343 | ret |
||
1159 | hidnplayr | 344 | |
345 | debugger_notify: |
||
346 | ; in: eax=debugger slot |
||
347 | ; ecx=size of debug message |
||
348 | ; [esp+4]..[esp+4+ecx]=message |
||
349 | ; interrupts must be disabled! |
||
350 | ; destroys all general registers |
||
351 | ; interrupts remain disabled |
||
1198 | clevermous | 352 | xchg ebp, eax |
353 | mov edi, [timer_ticks] |
||
354 | add edi, 500 ; 5 sec timeout |
||
1159 | hidnplayr | 355 | .1: |
1198 | clevermous | 356 | mov eax, ebp |
357 | shl eax, 8 |
||
1159 | hidnplayr | 358 | mov edx, [SLOT_BASE+eax+APPDATA.dbg_event_mem] |
1198 | clevermous | 359 | test edx, edx |
360 | jz .ret |
||
1159 | hidnplayr | 361 | ; read buffer header |
1198 | clevermous | 362 | push ecx |
363 | push eax |
||
364 | push eax |
||
365 | mov eax, ebp |
||
366 | mov ebx, esp |
||
367 | mov ecx, 8 |
||
368 | call read_process_memory |
||
369 | cmp eax, ecx |
||
370 | jz @f |
||
371 | add esp, 12 |
||
372 | jmp .ret |
||
1159 | hidnplayr | 373 | @@: |
1198 | clevermous | 374 | cmp dword [ebx], 0 |
375 | jg @f |
||
1159 | hidnplayr | 376 | .2: |
1198 | clevermous | 377 | pop ecx |
378 | pop ecx |
||
379 | pop ecx |
||
1159 | hidnplayr | 380 | cmp dword [CURRENT_TASK], 1 |
1198 | clevermous | 381 | jnz .notos |
382 | cmp [timer_ticks], edi |
||
383 | jae .ret |
||
1159 | hidnplayr | 384 | .notos: |
1198 | clevermous | 385 | sti |
386 | call change_task |
||
387 | cli |
||
388 | jmp .1 |
||
1159 | hidnplayr | 389 | @@: |
1198 | clevermous | 390 | mov ecx, [ebx+8] |
391 | add ecx, [ebx+4] |
||
392 | cmp ecx, [ebx] |
||
393 | ja .2 |
||
1159 | hidnplayr | 394 | ; advance buffer position |
1198 | clevermous | 395 | push ecx |
396 | mov ecx, 4 |
||
397 | sub ebx, ecx |
||
398 | mov eax, ebp |
||
399 | add edx, ecx |
||
400 | call write_process_memory |
||
401 | pop eax |
||
1159 | hidnplayr | 402 | ; write message |
1198 | clevermous | 403 | mov eax, ebp |
404 | add edx, ecx |
||
405 | add edx, [ebx+8] |
||
406 | add ebx, 20 |
||
407 | pop ecx |
||
408 | pop ecx |
||
409 | pop ecx |
||
410 | call write_process_memory |
||
1159 | hidnplayr | 411 | ; new debug event |
1198 | clevermous | 412 | mov eax, ebp |
413 | shl eax, 8 |
||
1159 | hidnplayr | 414 | or byte [SLOT_BASE+eax+APPDATA.event_mask+1], 1 ; set flag 100h |
415 | .ret: |
||
1198 | clevermous | 416 | ret |