Rev 2434 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
||
2465 | Serge | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
||
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
7 | |||
593 | mikedld | 8 | $Revision: 2465 $ |
9 | |||
10 | |||
40 | halyavin | 11 | ; diamond, 2006 |
12 | sys_debug_services: |
||
1329 | Lrz | 13 | cmp ebx, 9 |
1056 | Galkov | 14 | ja @f |
1329 | Lrz | 15 | jmp dword [sys_debug_services_table+ebx*4] |
2434 | Serge | 16 | @@: |
17 | ret |
||
1329 | Lrz | 18 | iglobal |
19 | align 4 |
||
40 | halyavin | 20 | sys_debug_services_table: |
1056 | Galkov | 21 | dd debug_set_event_data |
22 | dd debug_getcontext |
||
23 | dd debug_setcontext |
||
24 | dd debug_detach |
||
25 | dd debug_suspend |
||
26 | dd debug_resume |
||
27 | dd debug_read_process_memory |
||
28 | dd debug_write_process_memory |
||
29 | dd debug_terminate |
||
30 | dd debug_set_drx |
||
1329 | Lrz | 31 | endg |
40 | halyavin | 32 | debug_set_event_data: |
1329 | Lrz | 33 | ; in: ecx = pointer |
40 | halyavin | 34 | ; destroys eax |
465 | serge | 35 | mov eax, [current_slot] |
1329 | Lrz | 36 | mov [eax+APPDATA.dbg_event_mem], ecx |
1056 | Galkov | 37 | ret |
40 | halyavin | 38 | |
39 | get_debuggee_slot: |
||
1329 | Lrz | 40 | ; in: ecx=PID |
40 | halyavin | 41 | ; out: CF=1 if error |
42 | ; CF=0 and eax=slot*0x20 if ok |
||
43 | ; out: interrupts disabled |
||
1056 | Galkov | 44 | cli |
1329 | Lrz | 45 | mov eax, ecx |
1056 | Galkov | 46 | call pid_to_slot |
47 | test eax, eax |
||
48 | jz .ret_bad |
||
49 | shl eax, 5 |
||
50 | push ebx |
||
379 | serge | 51 | mov ebx, [CURRENT_TASK] |
380 | serge | 52 | cmp [SLOT_BASE+eax*8+APPDATA.debugger_slot], ebx |
1056 | Galkov | 53 | pop ebx |
54 | jnz .ret_bad |
||
55 | ; clc ; automatically |
||
56 | ret |
||
40 | halyavin | 57 | .ret_bad: |
1056 | Galkov | 58 | stc |
59 | ret |
||
40 | halyavin | 60 | |
61 | debug_detach: |
||
1329 | Lrz | 62 | ; in: ecx=pid |
40 | halyavin | 63 | ; destroys eax,ebx |
1056 | Galkov | 64 | call get_debuggee_slot |
65 | jc .ret |
||
380 | serge | 66 | and dword [eax*8+SLOT_BASE+APPDATA.debugger_slot], 0 |
1056 | Galkov | 67 | call do_resume |
40 | halyavin | 68 | .ret: |
1056 | Galkov | 69 | sti |
70 | ret |
||
40 | halyavin | 71 | |
72 | debug_terminate: |
||
1329 | Lrz | 73 | ; in: ecx=pid |
1056 | Galkov | 74 | call get_debuggee_slot |
75 | jc debug_detach.ret |
||
76 | mov ecx, eax |
||
77 | shr ecx, 5 |
||
1329 | Lrz | 78 | ; push 2 |
79 | ; pop ebx |
||
2434 | Serge | 80 | mov edx, esi |
1329 | Lrz | 81 | jmp sysfn_terminate |
40 | halyavin | 82 | |
83 | debug_suspend: |
||
1329 | Lrz | 84 | ; in: ecx=pid |
85 | ; destroys eax,ecx |
||
667 | diamond | 86 | cli |
1329 | Lrz | 87 | mov eax, ecx |
667 | diamond | 88 | call pid_to_slot |
680 | diamond | 89 | shl eax, 5 |
667 | diamond | 90 | jz .ret |
1329 | Lrz | 91 | mov cl, [CURRENT_TASK+eax+TASKDATA.state] ; process state |
92 | test cl, cl |
||
1056 | Galkov | 93 | jz .1 |
1329 | Lrz | 94 | cmp cl, 5 |
1056 | Galkov | 95 | jnz .ret |
1329 | Lrz | 96 | mov cl, 2 |
2434 | Serge | 97 | .2: |
98 | mov [CURRENT_TASK+eax+TASKDATA.state], cl |
||
40 | halyavin | 99 | .ret: |
1056 | Galkov | 100 | sti |
101 | ret |
||
40 | halyavin | 102 | .1: |
1329 | Lrz | 103 | inc ecx |
1056 | Galkov | 104 | jmp .2 |
40 | halyavin | 105 | |
106 | do_resume: |
||
1329 | Lrz | 107 | mov cl, [CURRENT_TASK+eax+TASKDATA.state] |
108 | cmp cl, 1 |
||
1056 | Galkov | 109 | jz .1 |
1329 | Lrz | 110 | cmp cl, 2 |
1056 | Galkov | 111 | jnz .ret |
1329 | Lrz | 112 | mov cl, 5 |
2434 | Serge | 113 | .2: |
114 | mov [CURRENT_TASK+eax+TASKDATA.state], cl |
||
115 | .ret: |
||
116 | ret |
||
117 | .1: |
||
118 | dec ecx |
||
1056 | Galkov | 119 | jmp .2 |
40 | halyavin | 120 | |
121 | debug_resume: |
||
1329 | Lrz | 122 | ; in: ecx=pid |
40 | halyavin | 123 | ; destroys eax,ebx |
667 | diamond | 124 | cli |
1329 | Lrz | 125 | mov eax, ecx |
667 | diamond | 126 | call pid_to_slot |
680 | diamond | 127 | shl eax, 5 |
667 | diamond | 128 | jz .ret |
129 | call do_resume |
||
2434 | Serge | 130 | .ret: |
131 | sti |
||
1056 | Galkov | 132 | ret |
40 | halyavin | 133 | |
134 | debug_getcontext: |
||
135 | ; in: |
||
1329 | Lrz | 136 | ; ecx=pid |
137 | ; edx=sizeof(CONTEXT) |
||
138 | ; esi->CONTEXT |
||
40 | halyavin | 139 | ; destroys eax,ecx,edx,esi,edi |
1329 | Lrz | 140 | cmp edx, 28h |
1056 | Galkov | 141 | jnz .ret |
1329 | Lrz | 142 | ; push ecx |
143 | ; mov ecx, esi |
||
1056 | Galkov | 144 | call check_region |
1329 | Lrz | 145 | ; pop ecx |
1056 | Galkov | 146 | dec eax |
147 | jnz .ret |
||
148 | call get_debuggee_slot |
||
149 | jc .ret |
||
1329 | Lrz | 150 | mov edi, esi |
2434 | Serge | 151 | mov eax, [eax*8+SLOT_BASE+APPDATA.pl0_stack] |
152 | lea esi, [eax+RING0_STACK_SIZE] |
||
1329 | Lrz | 153 | |
40 | halyavin | 154 | .ring0: |
155 | ; note that following code assumes that all interrupt/exception handlers |
||
465 | serge | 156 | ; saves ring-3 context by pushad in this order |
157 | ; top of ring0 stack: ring3 stack ptr (ss+esp), iret data (cs+eip+eflags), pushad |
||
158 | sub esi, 8+12+20h |
||
159 | lodsd ;edi |
||
1056 | Galkov | 160 | mov [edi+24h], eax |
465 | serge | 161 | lodsd ;esi |
1056 | Galkov | 162 | mov [edi+20h], eax |
465 | serge | 163 | lodsd ; ebp |
1056 | Galkov | 164 | mov [edi+1Ch], eax |
465 | serge | 165 | lodsd ;esp |
166 | lodsd ;ebx |
||
1056 | Galkov | 167 | mov [edi+14h], eax |
465 | serge | 168 | lodsd ;edx |
1056 | Galkov | 169 | mov [edi+10h], eax |
465 | serge | 170 | lodsd ;ecx |
1056 | Galkov | 171 | mov [edi+0Ch], eax |
465 | serge | 172 | lodsd ;eax |
1056 | Galkov | 173 | mov [edi+8], eax |
465 | serge | 174 | lodsd ;eip |
1056 | Galkov | 175 | mov [edi], eax |
465 | serge | 176 | lodsd ;cs |
177 | lodsd ;eflags |
||
1056 | Galkov | 178 | mov [edi+4], eax |
465 | serge | 179 | lodsd ;esp |
1056 | Galkov | 180 | mov [edi+18h], eax |
40 | halyavin | 181 | .ret: |
1056 | Galkov | 182 | sti |
183 | ret |
||
40 | halyavin | 184 | |
185 | debug_setcontext: |
||
186 | ; in: |
||
1329 | Lrz | 187 | ; ecx=pid |
188 | ; edx=sizeof(CONTEXT) |
||
189 | ; esi->CONTEXT |
||
40 | halyavin | 190 | ; destroys eax,ecx,edx,esi,edi |
1329 | Lrz | 191 | cmp edx, 28h |
1056 | Galkov | 192 | jnz .ret |
1329 | Lrz | 193 | ; push ebx |
194 | ; mov ebx, edx |
||
1056 | Galkov | 195 | call check_region |
1329 | Lrz | 196 | ; pop ebx |
1056 | Galkov | 197 | dec eax |
198 | jnz .ret |
||
199 | call get_debuggee_slot |
||
200 | jc .stiret |
||
1329 | Lrz | 201 | ; mov esi, edx |
2434 | Serge | 202 | mov eax, [eax*8+SLOT_BASE+APPDATA.pl0_stack] |
203 | lea edi, [eax+RING0_STACK_SIZE] |
||
1329 | Lrz | 204 | |
40 | halyavin | 205 | .ring0: |
465 | serge | 206 | sub edi, 8+12+20h |
207 | mov eax, [esi+24h] ;edi |
||
1056 | Galkov | 208 | stosd |
465 | serge | 209 | mov eax, [esi+20h] ;esi |
1056 | Galkov | 210 | stosd |
465 | serge | 211 | mov eax, [esi+1Ch] ;ebp |
1056 | Galkov | 212 | stosd |
465 | serge | 213 | scasd |
214 | mov eax, [esi+14h] ;ebx |
||
1056 | Galkov | 215 | stosd |
465 | serge | 216 | mov eax, [esi+10h] ;edx |
1056 | Galkov | 217 | stosd |
465 | serge | 218 | mov eax, [esi+0Ch] ;ecx |
1056 | Galkov | 219 | stosd |
465 | serge | 220 | mov eax, [esi+8] ;eax |
1056 | Galkov | 221 | stosd |
465 | serge | 222 | mov eax, [esi] ;eip |
1056 | Galkov | 223 | stosd |
224 | scasd |
||
465 | serge | 225 | mov eax, [esi+4] ;eflags |
1056 | Galkov | 226 | stosd |
465 | serge | 227 | mov eax, [esi+18h] ;esp |
1056 | Galkov | 228 | stosd |
40 | halyavin | 229 | .stiret: |
1056 | Galkov | 230 | sti |
40 | halyavin | 231 | .ret: |
1056 | Galkov | 232 | ret |
40 | halyavin | 233 | |
66 | diamond | 234 | debug_set_drx: |
1056 | Galkov | 235 | call get_debuggee_slot |
236 | jc .errret |
||
237 | mov ebp, eax |
||
380 | serge | 238 | lea eax, [eax*8+SLOT_BASE+APPDATA.dbg_regs] |
66 | diamond | 239 | ; [eax]=dr0, [eax+4]=dr1, [eax+8]=dr2, [eax+C]=dr3 |
240 | ; [eax+10]=dr7 |
||
1329 | Lrz | 241 | cmp esi, OS_BASE |
2434 | Serge | 242 | jae .errret |
1329 | Lrz | 243 | cmp dl, 3 |
1056 | Galkov | 244 | ja .errret |
1329 | Lrz | 245 | mov ecx, dr7 |
246 | ;fix me |
||
2434 | Serge | 247 | xchg ecx, edx |
1329 | Lrz | 248 | shr edx, cl |
249 | shr edx, cl |
||
2434 | Serge | 250 | xchg ecx, edx |
1329 | Lrz | 251 | |
252 | test ecx, 2 ; bit 1+2*index = G0..G3, global break enable |
||
1056 | Galkov | 253 | jnz .errret2 |
1329 | Lrz | 254 | test dh, dh |
1056 | Galkov | 255 | jns .new |
66 | diamond | 256 | ; clear breakpoint |
1329 | Lrz | 257 | movzx edx, dl |
258 | add edx, edx |
||
259 | and dword [eax+edx*2], 0 ; clear DR |
||
260 | btr dword [eax+10h], edx ; clear L bit |
||
1056 | Galkov | 261 | test byte [eax+10h], 55h |
262 | jnz .okret |
||
465 | serge | 263 | ; imul eax, ebp, tss_step/32 |
264 | ; and byte [eax + tss_data + TSS._trap], not 1 |
||
2434 | Serge | 265 | and [ebp*8 + SLOT_BASE+APPDATA.dbg_state], not 1 |
66 | diamond | 266 | .okret: |
1329 | Lrz | 267 | and dword [esp+32], 0 |
1056 | Galkov | 268 | sti |
269 | ret |
||
66 | diamond | 270 | .errret: |
1056 | Galkov | 271 | sti |
1329 | Lrz | 272 | mov dword [esp+32], 1 |
1056 | Galkov | 273 | ret |
66 | diamond | 274 | .errret2: |
1056 | Galkov | 275 | sti |
1329 | Lrz | 276 | mov dword [esp+32], 2 |
1056 | Galkov | 277 | ret |
66 | diamond | 278 | .new: |
279 | ; add new breakpoint |
||
1329 | Lrz | 280 | ; dl=index; dh=flags; esi=address |
281 | test dh, 0xF0 |
||
1056 | Galkov | 282 | jnz .errret |
1329 | Lrz | 283 | mov cl, dh |
284 | and cl, 3 |
||
285 | cmp cl, 2 |
||
1056 | Galkov | 286 | jz .errret |
1329 | Lrz | 287 | mov cl, dh |
288 | shr cl, 2 |
||
289 | cmp cl, 2 |
||
1056 | Galkov | 290 | jz .errret |
1329 | Lrz | 291 | |
2434 | Serge | 292 | mov ebx, esi |
1329 | Lrz | 293 | test bl, dl |
294 | |||
1056 | Galkov | 295 | jnz .errret |
296 | or byte [eax+10h+1], 3 ; set GE and LE flags |
||
1329 | Lrz | 297 | |
298 | movzx edx, dh |
||
299 | movzx ecx, dl |
||
1056 | Galkov | 300 | add ecx, ecx |
301 | bts dword [eax+10h], ecx ; set L flag |
||
302 | add ecx, ecx |
||
1329 | Lrz | 303 | mov [eax+ecx], ebx;esi ; set DR |
304 | shl edx, cl |
||
305 | mov ebx, 0xF |
||
1056 | Galkov | 306 | shl ebx, cl |
1329 | Lrz | 307 | not ebx |
308 | and [eax+10h+2], bx |
||
309 | or [eax+10h+2], dx ; set R/W and LEN fields |
||
465 | serge | 310 | ; imul eax, ebp, tss_step/32 |
311 | ; or byte [eax + tss_data + TSS._trap], 1 |
||
2434 | Serge | 312 | or [ebp*8 + SLOT_BASE+APPDATA.dbg_state], 1 |
1056 | Galkov | 313 | jmp .okret |
66 | diamond | 314 | |
40 | halyavin | 315 | debug_read_process_memory: |
316 | ; in: |
||
1329 | Lrz | 317 | ; ecx=pid |
318 | ; edx=length |
||
319 | ; edi->buffer in debugger |
||
320 | ; esi=address in debuggee |
||
44 | halyavin | 321 | ; out: [esp+36]=sizeof(read) |
40 | halyavin | 322 | ; destroys all |
1329 | Lrz | 323 | ; push ebx |
324 | ; mov ebx, esi |
||
1056 | Galkov | 325 | call check_region |
1329 | Lrz | 326 | ; pop ebx |
1056 | Galkov | 327 | dec eax |
328 | jnz .err |
||
329 | call get_debuggee_slot |
||
330 | jc .err |
||
331 | shr eax, 5 |
||
1394 | diamond | 332 | mov ecx, edi |
1056 | Galkov | 333 | call read_process_memory |
334 | sti |
||
1329 | Lrz | 335 | mov dword [esp+32], eax |
1056 | Galkov | 336 | ret |
44 | halyavin | 337 | .err: |
1329 | Lrz | 338 | or dword [esp+32], -1 |
1056 | Galkov | 339 | ret |
40 | halyavin | 340 | |
341 | debug_write_process_memory: |
||
342 | ; in: |
||
1329 | Lrz | 343 | ; ecx=pid |
344 | ; edx=length |
||
345 | ; edi->buffer in debugger |
||
346 | ; esi=address in debuggee |
||
44 | halyavin | 347 | ; out: [esp+36]=sizeof(write) |
40 | halyavin | 348 | ; destroys all |
1329 | Lrz | 349 | ; push ebx |
350 | ; mov ebx, esi |
||
1056 | Galkov | 351 | call check_region |
1329 | Lrz | 352 | ; pop ebx |
1056 | Galkov | 353 | dec eax |
354 | jnz debug_read_process_memory.err |
||
355 | call get_debuggee_slot |
||
356 | jc debug_read_process_memory.err |
||
357 | shr eax, 5 |
||
1394 | diamond | 358 | mov ecx, edi |
1056 | Galkov | 359 | call write_process_memory |
360 | sti |
||
1329 | Lrz | 361 | mov [esp+32], eax |
1056 | Galkov | 362 | ret |
40 | halyavin | 363 | |
364 | debugger_notify: |
||
365 | ; in: eax=debugger slot |
||
366 | ; ecx=size of debug message |
||
367 | ; [esp+4]..[esp+4+ecx]=message |
||
368 | ; interrupts must be disabled! |
||
369 | ; destroys all general registers |
||
370 | ; interrupts remain disabled |
||
1056 | Galkov | 371 | xchg ebp, eax |
372 | mov edi, [timer_ticks] |
||
373 | add edi, 500 ; 5 sec timeout |
||
40 | halyavin | 374 | .1: |
1056 | Galkov | 375 | mov eax, ebp |
376 | shl eax, 8 |
||
1394 | diamond | 377 | mov esi, [SLOT_BASE+eax+APPDATA.dbg_event_mem] |
378 | test esi, esi |
||
1056 | Galkov | 379 | jz .ret |
40 | halyavin | 380 | ; read buffer header |
1056 | Galkov | 381 | push ecx |
382 | push eax |
||
383 | push eax |
||
384 | mov eax, ebp |
||
1394 | diamond | 385 | mov ecx, esp |
386 | mov edx, 8 |
||
1056 | Galkov | 387 | call read_process_memory |
1394 | diamond | 388 | cmp eax, edx |
1056 | Galkov | 389 | jz @f |
390 | add esp, 12 |
||
391 | jmp .ret |
||
40 | halyavin | 392 | @@: |
1394 | diamond | 393 | cmp dword [ecx], 0 |
1056 | Galkov | 394 | jg @f |
40 | halyavin | 395 | .2: |
1056 | Galkov | 396 | pop ecx |
397 | pop ecx |
||
398 | pop ecx |
||
379 | serge | 399 | cmp dword [CURRENT_TASK], 1 |
1056 | Galkov | 400 | jnz .notos |
401 | cmp [timer_ticks], edi |
||
402 | jae .ret |
||
66 | diamond | 403 | .notos: |
1056 | Galkov | 404 | sti |
405 | call change_task |
||
406 | cli |
||
407 | jmp .1 |
||
40 | halyavin | 408 | @@: |
1394 | diamond | 409 | mov edx, [ecx+8] |
410 | add edx, [ecx+4] |
||
411 | cmp edx, [ecx] |
||
1056 | Galkov | 412 | ja .2 |
40 | halyavin | 413 | ; advance buffer position |
1394 | diamond | 414 | push edx |
415 | mov edx, 4 |
||
416 | sub ecx, edx |
||
1056 | Galkov | 417 | mov eax, ebp |
1394 | diamond | 418 | add esi, edx |
1056 | Galkov | 419 | call write_process_memory |
420 | pop eax |
||
40 | halyavin | 421 | ; write message |
1056 | Galkov | 422 | mov eax, ebp |
1394 | diamond | 423 | add esi, edx |
424 | add esi, [ecx+8] |
||
425 | add ecx, 20 |
||
426 | pop edx |
||
427 | pop edx |
||
428 | pop edx |
||
1056 | Galkov | 429 | call write_process_memory |
40 | halyavin | 430 | ; new debug event |
1056 | Galkov | 431 | mov eax, ebp |
432 | shl eax, 8 |
||
380 | serge | 433 | or byte [SLOT_BASE+eax+APPDATA.event_mask+1], 1 ; set flag 100h |
40 | halyavin | 434 | .ret: |
1056 | Galkov | 435 | ret |