]>
Commit | Line | Data |
---|---|---|
1394f032 BW |
1 | /* |
2 | * File: arch/blackfin/mach-common/entry.S | |
3 | * Based on: | |
4 | * Author: Linus Torvalds | |
5 | * | |
6 | * Created: ? | |
7 | * Description: contains the system-call and fault low-level handling routines. | |
8 | * This also contains the timer-interrupt handler, as well as all | |
9 | * interrupts and faults that can result in a task-switch. | |
10 | * | |
11 | * Modified: | |
12 | * Copyright 2004-2006 Analog Devices Inc. | |
13 | * | |
14 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | * | |
21 | * This program is distributed in the hope that it will be useful, | |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | * GNU General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License | |
27 | * along with this program; if not, see the file COPYING, or write | |
28 | * to the Free Software Foundation, Inc., | |
29 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
30 | */ | |
31 | ||
2ebcade5 | 32 | /* NOTE: This code handles signal-recognition, which happens every time |
1394f032 BW |
33 | * after a timer-interrupt and after each system call. |
34 | */ | |
35 | ||
9cb07b23 | 36 | #include <linux/init.h> |
1394f032 | 37 | #include <linux/linkage.h> |
1f83b8f1 | 38 | #include <linux/unistd.h> |
1394f032 | 39 | #include <asm/blackfin.h> |
1394f032 | 40 | #include <asm/errno.h> |
5d750b9e | 41 | #include <asm/fixed_code.h> |
1394f032 BW |
42 | #include <asm/thread_info.h> /* TIF_NEED_RESCHED */ |
43 | #include <asm/asm-offsets.h> | |
669b792c | 44 | #include <asm/trace.h> |
16aadcb6 | 45 | #include <asm/traps.h> |
1394f032 | 46 | |
639f6571 | 47 | #include <asm/context.S> |
1394f032 | 48 | |
f0b5d12f MF |
49 | #if defined(CONFIG_BFIN_SCRATCH_REG_RETN) |
50 | # define EX_SCRATCH_REG RETN | |
51 | #elif defined(CONFIG_BFIN_SCRATCH_REG_RETE) | |
52 | # define EX_SCRATCH_REG RETE | |
53 | #else | |
54 | # define EX_SCRATCH_REG CYCLES | |
55 | #endif | |
56 | ||
1394f032 BW |
57 | #ifdef CONFIG_EXCPT_IRQ_SYSC_L1 |
58 | .section .l1.text | |
59 | #else | |
60 | .text | |
61 | #endif | |
62 | ||
63 | /* Slightly simplified and streamlined entry point for CPLB misses. | |
64 | * This one does not lower the level to IRQ5, and thus can be used to | |
65 | * patch up CPLB misses on the kernel stack. | |
66 | */ | |
1aafd909 | 67 | #if ANOMALY_05000261 |
f26fbc48 RG |
68 | #define _ex_dviol _ex_workaround_261 |
69 | #define _ex_dmiss _ex_workaround_261 | |
70 | #define _ex_dmult _ex_workaround_261 | |
71 | ||
72 | ENTRY(_ex_workaround_261) | |
1394f032 BW |
73 | /* |
74 | * Work around an anomaly: if we see a new DCPLB fault, return | |
75 | * without doing anything. Then, if we get the same fault again, | |
76 | * handle it. | |
77 | */ | |
f26fbc48 | 78 | P4 = R7; /* Store EXCAUSE */ |
6b3087c6 GY |
79 | |
80 | GET_PDA(p5, r7); | |
81 | r7 = [p5 + PDA_LFRETX]; | |
1394f032 | 82 | r6 = retx; |
6b3087c6 | 83 | [p5 + PDA_LFRETX] = r6; |
1394f032 | 84 | cc = r6 == r7; |
8d6c2420 | 85 | if !cc jump _bfin_return_from_exception; |
1394f032 | 86 | /* fall through */ |
f26fbc48 | 87 | R7 = P4; |
16aadcb6 | 88 | R6 = VEC_CPLB_M; /* Data CPLB Miss */ |
f26fbc48 RG |
89 | cc = R6 == R7; |
90 | if cc jump _ex_dcplb_miss (BP); | |
16aadcb6 RG |
91 | #ifdef CONFIG_MPU |
92 | R6 = VEC_CPLB_VL; /* Data CPLB Violation */ | |
b97b8a99 BS |
93 | cc = R6 == R7; |
94 | if cc jump _ex_dcplb_viol (BP); | |
16aadcb6 RG |
95 | #endif |
96 | /* Handle Data CPLB Protection Violation | |
f26fbc48 RG |
97 | * and Data CPLB Multiple Hits - Linux Trap Zero |
98 | */ | |
99 | jump _ex_trap_c; | |
100 | ENDPROC(_ex_workaround_261) | |
101 | ||
b97b8a99 BS |
102 | #else |
103 | #ifdef CONFIG_MPU | |
104 | #define _ex_dviol _ex_dcplb_viol | |
f26fbc48 RG |
105 | #else |
106 | #define _ex_dviol _ex_trap_c | |
b97b8a99 | 107 | #endif |
f26fbc48 RG |
108 | #define _ex_dmiss _ex_dcplb_miss |
109 | #define _ex_dmult _ex_trap_c | |
1394f032 BW |
110 | #endif |
111 | ||
b97b8a99 BS |
112 | |
113 | ENTRY(_ex_dcplb_viol) | |
f26fbc48 RG |
114 | ENTRY(_ex_dcplb_miss) |
115 | ENTRY(_ex_icplb_miss) | |
1394f032 | 116 | (R7:6,P5:4) = [sp++]; |
dbdf20db BS |
117 | /* We leave the previously pushed ASTAT on the stack. */ |
118 | SAVE_CONTEXT_CPLB | |
119 | ||
2a0c4fdb BS |
120 | /* We must load R1 here, _before_ DEBUG_HWTRACE_SAVE, since that |
121 | * will change the stack pointer. */ | |
b97b8a99 BS |
122 | R0 = SEQSTAT; |
123 | R1 = SP; | |
dbdf20db | 124 | |
2a0c4fdb | 125 | DEBUG_HWTRACE_SAVE(p5, r7) |
dbdf20db | 126 | |
b97b8a99 BS |
127 | sp += -12; |
128 | call _cplb_hdr; | |
129 | sp += 12; | |
130 | CC = R0 == 0; | |
131 | IF !CC JUMP _handle_bad_cplb; | |
0c7a6b21 RG |
132 | |
133 | #ifdef CONFIG_DEBUG_DOUBLEFAULT | |
134 | /* While we were processing this, did we double fault? */ | |
135 | r7 = SEQSTAT; /* reason code is in bit 5:0 */ | |
136 | r6.l = lo(SEQSTAT_EXCAUSE); | |
137 | r6.h = hi(SEQSTAT_EXCAUSE); | |
138 | r7 = r7 & r6; | |
139 | r6 = 0x25; | |
140 | CC = R7 == R6; | |
141 | if CC JUMP _double_fault; | |
142 | #endif | |
143 | ||
80f31c8a | 144 | DEBUG_HWTRACE_RESTORE(p5, r7) |
dbdf20db BS |
145 | RESTORE_CONTEXT_CPLB |
146 | ASTAT = [SP++]; | |
f0b5d12f | 147 | SP = EX_SCRATCH_REG; |
1394f032 | 148 | rtx; |
f26fbc48 | 149 | ENDPROC(_ex_icplb_miss) |
1394f032 | 150 | |
1394f032 | 151 | ENTRY(_ex_syscall) |
1394f032 | 152 | raise 15; /* invoked by TRAP #0, for sys call */ |
0c7a6b21 | 153 | jump.s _bfin_return_from_exception; |
51be24c3 | 154 | ENDPROC(_ex_syscall) |
1394f032 | 155 | |
1394f032 | 156 | ENTRY(_ex_single_step) |
0893f125 BS |
157 | /* If we just returned from an interrupt, the single step event is |
158 | for the RTI instruction. */ | |
1394f032 BW |
159 | r7 = retx; |
160 | r6 = reti; | |
161 | cc = r7 == r6; | |
0893f125 | 162 | if cc jump _bfin_return_from_exception; |
1394f032 | 163 | |
5400c5aa | 164 | #ifdef CONFIG_KGDB |
0d1cdd7a SZ |
165 | /* Don't do single step in hardware exception handler */ |
166 | p5.l = lo(IPEND); | |
167 | p5.h = hi(IPEND); | |
168 | r6 = [p5]; | |
d6a29891 SZ |
169 | cc = bittst(r6, 4); |
170 | if cc jump _bfin_return_from_exception; | |
0d1cdd7a SZ |
171 | cc = bittst(r6, 5); |
172 | if cc jump _bfin_return_from_exception; | |
173 | ||
0d1cdd7a SZ |
174 | /* skip single step if current interrupt priority is higher than |
175 | * that of the first instruction, from which gdb starts single step */ | |
176 | r6 >>= 6; | |
177 | r7 = 10; | |
178 | .Lfind_priority_start: | |
179 | cc = bittst(r6, 0); | |
180 | if cc jump .Lfind_priority_done; | |
181 | r6 >>= 1; | |
182 | r7 += -1; | |
183 | cc = r7 == 0; | |
184 | if cc jump .Lfind_priority_done; | |
185 | jump.s .Lfind_priority_start; | |
186 | .Lfind_priority_done: | |
a5ac0129 SZ |
187 | p4.l = _kgdb_single_step; |
188 | p4.h = _kgdb_single_step; | |
0d1cdd7a SZ |
189 | r6 = [p4]; |
190 | cc = r6 == 0; | |
191 | if cc jump .Ldo_single_step; | |
192 | r6 += -1; | |
193 | cc = r6 < r7; | |
d6a29891 | 194 | if cc jump 1f; |
0d1cdd7a | 195 | .Ldo_single_step: |
d6a29891 | 196 | #else |
0893f125 | 197 | /* If we were in user mode, do the single step normally. */ |
5400c5aa JZ |
198 | p5.l = lo(IPEND); |
199 | p5.h = hi(IPEND); | |
1394f032 | 200 | r6 = [p5]; |
0893f125 BS |
201 | r7 = 0xffe0 (z); |
202 | r7 = r7 & r6; | |
203 | cc = r7 == 0; | |
5400c5aa | 204 | if !cc jump 1f; |
d6a29891 | 205 | #endif |
b9a3899d RG |
206 | #ifdef CONFIG_EXACT_HWERR |
207 | /* Read the ILAT, and to check to see if the process we are | |
208 | * single stepping caused a previous hardware error | |
209 | * If so, do not single step, (which lowers to IRQ5, and makes | |
210 | * us miss the error). | |
211 | */ | |
212 | p5.l = lo(ILAT); | |
213 | p5.h = hi(ILAT); | |
214 | r7 = [p5]; | |
215 | cc = bittst(r7, EVT_IVHW_P); | |
216 | if cc jump 1f; | |
217 | #endif | |
5400c5aa JZ |
218 | /* Single stepping only a single instruction, so clear the trace |
219 | * bit here. */ | |
220 | r7 = syscfg; | |
1997660c | 221 | bitclr (r7, SYSCFG_SSSTEP_P); |
5400c5aa JZ |
222 | syscfg = R7; |
223 | jump _ex_trap_c; | |
224 | ||
225 | 1: | |
0893f125 BS |
226 | /* |
227 | * We were in an interrupt handler. By convention, all of them save | |
228 | * SYSCFG with their first instruction, so by checking whether our | |
229 | * RETX points at the entry point, we can determine whether to allow | |
230 | * a single step, or whether to clear SYSCFG. | |
231 | * | |
232 | * First, find out the interrupt level and the event vector for it. | |
233 | */ | |
234 | p5.l = lo(EVT0); | |
235 | p5.h = hi(EVT0); | |
236 | p5 += -4; | |
237 | 2: | |
238 | r7 = rot r7 by -1; | |
239 | p5 += 4; | |
240 | if !cc jump 2b; | |
241 | ||
242 | /* What we actually do is test for the _second_ instruction in the | |
243 | * IRQ handler. That way, if there are insns following the restore | |
244 | * of SYSCFG after leaving the handler, we will not turn off SYSCFG | |
245 | * for them. */ | |
246 | ||
247 | r7 = [p5]; | |
248 | r7 += 2; | |
249 | r6 = RETX; | |
250 | cc = R7 == R6; | |
251 | if !cc jump _bfin_return_from_exception; | |
252 | ||
253 | r7 = syscfg; | |
1997660c | 254 | bitclr (r7, SYSCFG_SSSTEP_P); /* Turn off single step */ |
0893f125 BS |
255 | syscfg = R7; |
256 | ||
5400c5aa | 257 | /* Fall through to _bfin_return_from_exception. */ |
46c87c3c | 258 | ENDPROC(_ex_single_step) |
1394f032 | 259 | |
8d6c2420 | 260 | ENTRY(_bfin_return_from_exception) |
1aafd909 | 261 | #if ANOMALY_05000257 |
8af10b79 MH |
262 | R7=LC0; |
263 | LC0=R7; | |
264 | R7=LC1; | |
265 | LC1=R7; | |
266 | #endif | |
0c7a6b21 RG |
267 | |
268 | #ifdef CONFIG_DEBUG_DOUBLEFAULT | |
269 | /* While we were processing the current exception, | |
270 | * did we cause another, and double fault? | |
271 | */ | |
272 | r7 = SEQSTAT; /* reason code is in bit 5:0 */ | |
273 | r6.l = lo(SEQSTAT_EXCAUSE); | |
274 | r6.h = hi(SEQSTAT_EXCAUSE); | |
275 | r7 = r7 & r6; | |
16aadcb6 | 276 | r6 = VEC_UNCOV; |
0c7a6b21 RG |
277 | CC = R7 == R6; |
278 | if CC JUMP _double_fault; | |
0c7a6b21 RG |
279 | #endif |
280 | ||
1394f032 BW |
281 | (R7:6,P5:4) = [sp++]; |
282 | ASTAT = [sp++]; | |
f0b5d12f | 283 | sp = EX_SCRATCH_REG; |
1394f032 | 284 | rtx; |
46c87c3c | 285 | ENDPROC(_bfin_return_from_exception) |
1394f032 BW |
286 | |
287 | ENTRY(_handle_bad_cplb) | |
2a0c4fdb | 288 | DEBUG_HWTRACE_RESTORE(p5, r7) |
1394f032 BW |
289 | /* To get here, we just tried and failed to change a CPLB |
290 | * so, handle things in trap_c (C code), by lowering to | |
291 | * IRQ5, just like we normally do. Since this is not a | |
292 | * "normal" return path, we have a do alot of stuff to | |
293 | * the stack to get ready so, we can fall through - we | |
294 | * need to make a CPLB exception look like a normal exception | |
295 | */ | |
dbdf20db BS |
296 | RESTORE_CONTEXT_CPLB |
297 | /* ASTAT is still on the stack, where it is needed. */ | |
80f31c8a | 298 | [--sp] = (R7:6,P5:4); |
1394f032 | 299 | |
1ffe6646 MF |
300 | ENTRY(_ex_replaceable) |
301 | nop; | |
302 | ||
1394f032 | 303 | ENTRY(_ex_trap_c) |
ae4f073c RG |
304 | /* The only thing that has been saved in this context is |
305 | * (R7:6,P5:4), ASTAT & SP - don't use anything else | |
306 | */ | |
307 | ||
308 | GET_PDA(p5, r6); | |
309 | ||
2ebcade5 RG |
310 | /* Make sure we are not in a double fault */ |
311 | p4.l = lo(IPEND); | |
312 | p4.h = hi(IPEND); | |
313 | r7 = [p4]; | |
314 | CC = BITTST (r7, 5); | |
315 | if CC jump _double_fault; | |
ae4f073c | 316 | [p5 + PDA_EXIPEND] = r7; |
2ebcade5 | 317 | |
1394f032 BW |
318 | /* Call C code (trap_c) to handle the exception, which most |
319 | * likely involves sending a signal to the current process. | |
320 | * To avoid double faults, lower our priority to IRQ5 first. | |
321 | */ | |
ae4f073c RG |
322 | r7.h = _exception_to_level5; |
323 | r7.l = _exception_to_level5; | |
1394f032 BW |
324 | p4.l = lo(EVT5); |
325 | p4.h = hi(EVT5); | |
ae4f073c | 326 | [p4] = r7; |
1394f032 BW |
327 | csync; |
328 | ||
0c7a6b21 RG |
329 | /* |
330 | * Save these registers, as they are only valid in exception context | |
331 | * (where we are now - as soon as we defer to IRQ5, they can change) | |
332 | * DCPLB_STATUS and ICPLB_STATUS are also only valid in EVT3, | |
333 | * but they are not very interesting, so don't save them | |
334 | */ | |
335 | ||
5d750b9e BS |
336 | p4.l = lo(DCPLB_FAULT_ADDR); |
337 | p4.h = hi(DCPLB_FAULT_ADDR); | |
338 | r7 = [p4]; | |
6b3087c6 | 339 | [p5 + PDA_DCPLB] = r7; |
5d750b9e | 340 | |
6b3087c6 GY |
341 | p4.l = lo(ICPLB_FAULT_ADDR); |
342 | p4.h = hi(ICPLB_FAULT_ADDR); | |
343 | r6 = [p4]; | |
344 | [p5 + PDA_ICPLB] = r6; | |
5d750b9e | 345 | |
5d750b9e | 346 | r6 = retx; |
6b3087c6 | 347 | [p5 + PDA_RETX] = r6; |
01b9f4b0 GY |
348 | |
349 | r6 = SEQSTAT; | |
350 | [p5 + PDA_SEQSTAT] = r6; | |
351 | ||
1997660c | 352 | /* Save the state of single stepping */ |
0893f125 | 353 | r6 = SYSCFG; |
6b3087c6 | 354 | [p5 + PDA_SYSCFG] = r6; |
1997660c RG |
355 | /* Clear it while we handle the exception in IRQ5 mode */ |
356 | BITCLR(r6, SYSCFG_SSSTEP_P); | |
0893f125 | 357 | SYSCFG = r6; |
5d750b9e | 358 | |
ae4f073c | 359 | /* Save the current IMASK, since we change in order to jump to level 5 */ |
1394f032 | 360 | cli r6; |
6b3087c6 | 361 | [p5 + PDA_EXIMASK] = r6; |
0893f125 BS |
362 | |
363 | p4.l = lo(SAFE_USER_INSTRUCTION); | |
364 | p4.h = hi(SAFE_USER_INSTRUCTION); | |
365 | retx = p4; | |
366 | ||
ae4f073c RG |
367 | /* Disable all interrupts, but make sure level 5 is enabled so |
368 | * we can switch to that level. | |
369 | */ | |
1394f032 BW |
370 | r6 = 0x3f; |
371 | sti r6; | |
372 | ||
ae4f073c RG |
373 | /* In case interrupts are disabled IPEND[4] (global interrupt disable bit) |
374 | * clear it (re-enabling interrupts again) by the special sequence of pushing | |
375 | * RETI onto the stack. This way we can lower ourselves to IVG5 even if the | |
376 | * exception was taken after the interrupt handler was called but before it | |
377 | * got a chance to enable global interrupts itself. | |
378 | */ | |
379 | [--sp] = reti; | |
380 | sp += 4; | |
381 | ||
1394f032 | 382 | raise 5; |
0c7a6b21 | 383 | jump.s _bfin_return_from_exception; |
51be24c3 | 384 | ENDPROC(_ex_trap_c) |
1394f032 | 385 | |
2ebcade5 | 386 | /* We just realized we got an exception, while we were processing a different |
33c8691f MF |
387 | * exception. This is a unrecoverable event, so crash. |
388 | * Note: this cannot be ENTRY() as we jump here with "if cc jump" ... | |
2ebcade5 | 389 | */ |
1997660c | 390 | ENTRY(_double_fault) |
0c7a6b21 RG |
391 | /* Turn caches & protection off, to ensure we don't get any more |
392 | * double exceptions | |
393 | */ | |
394 | ||
395 | P4.L = LO(IMEM_CONTROL); | |
396 | P4.H = HI(IMEM_CONTROL); | |
397 | ||
398 | R5 = [P4]; /* Control Register*/ | |
399 | BITCLR(R5,ENICPLB_P); | |
eb7bd9c4 | 400 | CSYNC; /* Disabling of CPLBs should be proceeded by a CSYNC */ |
0c7a6b21 RG |
401 | [P4] = R5; |
402 | SSYNC; | |
403 | ||
404 | P4.L = LO(DMEM_CONTROL); | |
405 | P4.H = HI(DMEM_CONTROL); | |
406 | R5 = [P4]; | |
407 | BITCLR(R5,ENDCPLB_P); | |
eb7bd9c4 | 408 | CSYNC; /* Disabling of CPLBs should be proceeded by a CSYNC */ |
0c7a6b21 RG |
409 | [P4] = R5; |
410 | SSYNC; | |
411 | ||
412 | /* Fix up the stack */ | |
413 | (R7:6,P5:4) = [sp++]; | |
414 | ASTAT = [sp++]; | |
415 | SP = EX_SCRATCH_REG; | |
416 | ||
417 | /* We should be out of the exception stack, and back down into | |
418 | * kernel or user space stack | |
419 | */ | |
420 | SAVE_ALL_SYS | |
2ebcade5 | 421 | |
ddb3f00c BS |
422 | /* The dumping functions expect the return address in the RETI |
423 | * slot. */ | |
424 | r6 = retx; | |
425 | [sp + PT_PC] = r6; | |
426 | ||
0c7a6b21 RG |
427 | r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ |
428 | SP += -12; | |
429 | call _double_fault_c; | |
430 | SP += 12; | |
2ebcade5 RG |
431 | .L_double_fault_panic: |
432 | JUMP .L_double_fault_panic | |
433 | ||
434 | ENDPROC(_double_fault) | |
435 | ||
1394f032 BW |
436 | ENTRY(_exception_to_level5) |
437 | SAVE_ALL_SYS | |
438 | ||
ae4f073c RG |
439 | GET_PDA(p5, r7); /* Fetch current PDA */ |
440 | r6 = [p5 + PDA_RETX]; | |
5d750b9e BS |
441 | [sp + PT_PC] = r6; |
442 | ||
ae4f073c | 443 | r6 = [p5 + PDA_SYSCFG]; |
0893f125 BS |
444 | [sp + PT_SYSCFG] = r6; |
445 | ||
01b9f4b0 GY |
446 | r6 = [p5 + PDA_SEQSTAT]; /* Read back seqstat */ |
447 | [sp + PT_SEQSTAT] = r6; | |
448 | ||
1394f032 | 449 | /* Restore the hardware error vector. */ |
ae4f073c RG |
450 | r7.h = _evt_ivhw; |
451 | r7.l = _evt_ivhw; | |
1394f032 BW |
452 | p4.l = lo(EVT5); |
453 | p4.h = hi(EVT5); | |
ae4f073c | 454 | [p4] = r7; |
1394f032 BW |
455 | csync; |
456 | ||
ae4f073c RG |
457 | #ifdef CONFIG_DEBUG_DOUBLEFAULT |
458 | /* Now that we have the hardware error vector programmed properly | |
459 | * we can re-enable interrupts (IPEND[4]), so if the _trap_c causes | |
460 | * another hardware error, we can catch it (self-nesting). | |
461 | */ | |
462 | [--sp] = reti; | |
463 | sp += 4; | |
464 | #endif | |
465 | ||
466 | r7 = [p5 + PDA_EXIPEND] /* Read the IPEND from the Exception state */ | |
467 | [sp + PT_IPEND] = r7; /* Store IPEND onto the stack */ | |
1394f032 | 468 | |
1394f032 BW |
469 | r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ |
470 | SP += -12; | |
471 | call _trap_c; | |
472 | SP += 12; | |
473 | ||
ae4f073c RG |
474 | /* If interrupts were off during the exception (IPEND[4] = 1), turn them off |
475 | * before we return. | |
476 | */ | |
477 | CC = BITTST(r7, EVT_IRPTEN_P) | |
478 | if !CC jump 1f; | |
479 | /* this will load a random value into the reti register - but that is OK, | |
480 | * since we do restore it to the correct value in the 'RESTORE_ALL_SYS' macro | |
481 | */ | |
482 | sp += -4; | |
483 | reti = [sp++]; | |
484 | 1: | |
485 | /* restore the interrupt mask (IMASK) */ | |
486 | r6 = [p5 + PDA_EXIMASK]; | |
487 | sti r6; | |
0c7a6b21 | 488 | |
1394f032 BW |
489 | call _ret_from_exception; |
490 | RESTORE_ALL_SYS | |
491 | rti; | |
51be24c3 | 492 | ENDPROC(_exception_to_level5) |
1394f032 BW |
493 | |
494 | ENTRY(_trap) /* Exception: 4th entry into system event table(supervisor mode)*/ | |
495 | /* Since the kernel stack can be anywhere, it's not guaranteed to be | |
496 | * covered by a CPLB. Switch to an exception stack; use RETN as a | |
497 | * scratch register (for want of a better option). | |
498 | */ | |
f0b5d12f | 499 | EX_SCRATCH_REG = sp; |
6b3087c6 | 500 | GET_PDA_SAFE(sp); |
01b9f4b0 | 501 | sp = [sp + PDA_EXSTACK]; |
1394f032 BW |
502 | /* Try to deal with syscalls quickly. */ |
503 | [--sp] = ASTAT; | |
80f31c8a | 504 | [--sp] = (R7:6,P5:4); |
0c7a6b21 | 505 | |
b9a3899d RG |
506 | #ifdef CONFIG_EXACT_HWERR |
507 | /* Make sure all pending read/writes complete. This will ensure any | |
508 | * accesses which could cause hardware errors completes, and signal | |
509 | * the the hardware before we do something silly, like crash the | |
510 | * kernel. We don't need to work around anomaly 05000312, since | |
511 | * we are already atomic | |
512 | */ | |
513 | ssync; | |
514 | #endif | |
515 | ||
dedfd5d7 | 516 | ANOMALY_283_315_WORKAROUND(p5, r7) |
5e9e7687 | 517 | |
0c7a6b21 RG |
518 | #ifdef CONFIG_DEBUG_DOUBLEFAULT |
519 | /* | |
520 | * Save these registers, as they are only valid in exception context | |
521 | * (where we are now - as soon as we defer to IRQ5, they can change) | |
522 | * DCPLB_STATUS and ICPLB_STATUS are also only valid in EVT3, | |
523 | * but they are not very interesting, so don't save them | |
524 | */ | |
525 | ||
6b3087c6 | 526 | GET_PDA(p5, r7); |
0c7a6b21 RG |
527 | p4.l = lo(DCPLB_FAULT_ADDR); |
528 | p4.h = hi(DCPLB_FAULT_ADDR); | |
529 | r7 = [p4]; | |
01b9f4b0 | 530 | [p5 + PDA_DF_DCPLB] = r7; |
0c7a6b21 | 531 | |
6b3087c6 GY |
532 | p4.l = lo(ICPLB_FAULT_ADDR); |
533 | p4.h = hi(ICPLB_FAULT_ADDR); | |
534 | r7 = [p4]; | |
01b9f4b0 | 535 | [p5 + PDA_DF_ICPLB] = r7; |
0c7a6b21 | 536 | |
01b9f4b0 GY |
537 | r7 = retx; |
538 | [p5 + PDA_DF_RETX] = r7; | |
0c7a6b21 | 539 | |
1394f032 | 540 | r7 = SEQSTAT; /* reason code is in bit 5:0 */ |
01b9f4b0 | 541 | [p5 + PDA_DF_SEQSTAT] = r7; |
0c7a6b21 RG |
542 | #else |
543 | r7 = SEQSTAT; /* reason code is in bit 5:0 */ | |
544 | #endif | |
1394f032 BW |
545 | r6.l = lo(SEQSTAT_EXCAUSE); |
546 | r6.h = hi(SEQSTAT_EXCAUSE); | |
547 | r7 = r7 & r6; | |
1ffe6646 MF |
548 | p5.h = _ex_table; |
549 | p5.l = _ex_table; | |
1394f032 BW |
550 | p4 = r7; |
551 | p5 = p5 + (p4 << 2); | |
552 | p4 = [p5]; | |
553 | jump (p4); | |
554 | ||
555 | .Lbadsys: | |
556 | r7 = -ENOSYS; /* signextending enough */ | |
557 | [sp + PT_R0] = r7; /* return value from system call */ | |
558 | jump .Lsyscall_really_exit; | |
51be24c3 | 559 | ENDPROC(_trap) |
1394f032 BW |
560 | |
561 | ENTRY(_kernel_execve) | |
562 | link SIZEOF_PTREGS; | |
563 | p0 = sp; | |
564 | r3 = SIZEOF_PTREGS / 4; | |
565 | r4 = 0(x); | |
6b3087c6 | 566 | .Lclear_regs: |
1394f032 BW |
567 | [p0++] = r4; |
568 | r3 += -1; | |
569 | cc = r3 == 0; | |
6b3087c6 | 570 | if !cc jump .Lclear_regs (bp); |
1394f032 BW |
571 | |
572 | p0 = sp; | |
573 | sp += -16; | |
574 | [sp + 12] = p0; | |
575 | call _do_execve; | |
576 | SP += 16; | |
577 | cc = r0 == 0; | |
6b3087c6 | 578 | if ! cc jump .Lexecve_failed; |
1394f032 BW |
579 | /* Success. Copy our temporary pt_regs to the top of the kernel |
580 | * stack and do a normal exception return. | |
581 | */ | |
582 | r1 = sp; | |
583 | r0 = (-KERNEL_STACK_SIZE) (x); | |
584 | r1 = r1 & r0; | |
585 | p2 = r1; | |
586 | p3 = [p2]; | |
587 | r0 = KERNEL_STACK_SIZE - 4 (z); | |
588 | p1 = r0; | |
589 | p1 = p1 + p2; | |
590 | ||
591 | p0 = fp; | |
592 | r4 = [p0--]; | |
593 | r3 = SIZEOF_PTREGS / 4; | |
6b3087c6 | 594 | .Lcopy_regs: |
1394f032 BW |
595 | r4 = [p0--]; |
596 | [p1--] = r4; | |
597 | r3 += -1; | |
598 | cc = r3 == 0; | |
6b3087c6 | 599 | if ! cc jump .Lcopy_regs (bp); |
1394f032 BW |
600 | |
601 | r0 = (KERNEL_STACK_SIZE - SIZEOF_PTREGS) (z); | |
602 | p1 = r0; | |
603 | p1 = p1 + p2; | |
604 | sp = p1; | |
605 | r0 = syscfg; | |
606 | [SP + PT_SYSCFG] = r0; | |
607 | [p3 + (TASK_THREAD + THREAD_KSP)] = sp; | |
608 | ||
609 | RESTORE_CONTEXT; | |
610 | rti; | |
6b3087c6 | 611 | .Lexecve_failed: |
1394f032 BW |
612 | unlink; |
613 | rts; | |
51be24c3 | 614 | ENDPROC(_kernel_execve) |
1394f032 BW |
615 | |
616 | ENTRY(_system_call) | |
617 | /* Store IPEND */ | |
618 | p2.l = lo(IPEND); | |
619 | p2.h = hi(IPEND); | |
620 | csync; | |
621 | r0 = [p2]; | |
622 | [sp + PT_IPEND] = r0; | |
623 | ||
624 | /* Store RETS for now */ | |
625 | r0 = rets; | |
626 | [sp + PT_RESERVED] = r0; | |
627 | /* Set the stack for the current process */ | |
628 | r7 = sp; | |
629 | r6.l = lo(ALIGN_PAGE_MASK); | |
630 | r6.h = hi(ALIGN_PAGE_MASK); | |
631 | r7 = r7 & r6; /* thread_info */ | |
632 | p2 = r7; | |
633 | p2 = [p2]; | |
634 | ||
635 | [p2+(TASK_THREAD+THREAD_KSP)] = sp; | |
9bd50df6 PG |
636 | #ifdef CONFIG_IPIPE |
637 | r0 = sp; | |
638 | SP += -12; | |
639 | call ___ipipe_syscall_root; | |
640 | SP += 12; | |
641 | cc = r0 == 1; | |
642 | if cc jump .Lsyscall_really_exit; | |
643 | cc = r0 == -1; | |
644 | if cc jump .Lresume_userspace; | |
645 | r3 = [sp + PT_R3]; | |
646 | r4 = [sp + PT_R4]; | |
647 | p0 = [sp + PT_ORIG_P0]; | |
648 | #endif /* CONFIG_IPIPE */ | |
1394f032 BW |
649 | |
650 | /* Check the System Call */ | |
651 | r7 = __NR_syscall; | |
652 | /* System call number is passed in P0 */ | |
653 | r6 = p0; | |
654 | cc = r6 < r7; | |
655 | if ! cc jump .Lbadsys; | |
656 | ||
657 | /* are we tracing syscalls?*/ | |
658 | r7 = sp; | |
659 | r6.l = lo(ALIGN_PAGE_MASK); | |
660 | r6.h = hi(ALIGN_PAGE_MASK); | |
661 | r7 = r7 & r6; | |
662 | p2 = r7; | |
663 | r7 = [p2+TI_FLAGS]; | |
664 | CC = BITTST(r7,TIF_SYSCALL_TRACE); | |
665 | if CC JUMP _sys_trace; | |
666 | ||
667 | /* Execute the appropriate system call */ | |
668 | ||
669 | p4 = p0; | |
670 | p5.l = _sys_call_table; | |
671 | p5.h = _sys_call_table; | |
672 | p5 = p5 + (p4 << 2); | |
673 | r0 = [sp + PT_R0]; | |
674 | r1 = [sp + PT_R1]; | |
675 | r2 = [sp + PT_R2]; | |
676 | p5 = [p5]; | |
677 | ||
678 | [--sp] = r5; | |
679 | [--sp] = r4; | |
680 | [--sp] = r3; | |
681 | SP += -12; | |
682 | call (p5); | |
683 | SP += 24; | |
684 | [sp + PT_R0] = r0; | |
685 | ||
686 | .Lresume_userspace: | |
687 | r7 = sp; | |
688 | r4.l = lo(ALIGN_PAGE_MASK); | |
689 | r4.h = hi(ALIGN_PAGE_MASK); | |
690 | r7 = r7 & r4; /* thread_info->flags */ | |
691 | p5 = r7; | |
692 | .Lresume_userspace_1: | |
693 | /* Disable interrupts. */ | |
694 | [--sp] = reti; | |
695 | reti = [sp++]; | |
696 | ||
697 | r7 = [p5 + TI_FLAGS]; | |
698 | r4.l = lo(_TIF_WORK_MASK); | |
699 | r4.h = hi(_TIF_WORK_MASK); | |
700 | r7 = r7 & r4; | |
701 | ||
702 | .Lsyscall_resched: | |
9bd50df6 PG |
703 | #ifdef CONFIG_IPIPE |
704 | cc = BITTST(r7, TIF_IRQ_SYNC); | |
705 | if !cc jump .Lsyscall_no_irqsync; | |
9ea7770f PG |
706 | /* |
707 | * Clear IPEND[4] manually to undo what resume_userspace_1 just did; | |
708 | * we need this so that high priority domain interrupts may still | |
709 | * preempt the current domain while the pipeline log is being played | |
710 | * back. | |
711 | */ | |
9bd50df6 | 712 | [--sp] = reti; |
9ea7770f | 713 | SP += 4; /* don't merge with next insn to keep the pattern obvious */ |
9bd50df6 PG |
714 | SP += -12; |
715 | call ___ipipe_sync_root; | |
716 | SP += 12; | |
717 | jump .Lresume_userspace_1; | |
718 | .Lsyscall_no_irqsync: | |
719 | #endif | |
1394f032 BW |
720 | cc = BITTST(r7, TIF_NEED_RESCHED); |
721 | if !cc jump .Lsyscall_sigpending; | |
722 | ||
723 | /* Reenable interrupts. */ | |
724 | [--sp] = reti; | |
9ea7770f | 725 | sp += 4; |
1394f032 BW |
726 | |
727 | SP += -12; | |
728 | call _schedule; | |
729 | SP += 12; | |
730 | ||
731 | jump .Lresume_userspace_1; | |
732 | ||
733 | .Lsyscall_sigpending: | |
734 | cc = BITTST(r7, TIF_RESTORE_SIGMASK); | |
735 | if cc jump .Lsyscall_do_signals; | |
736 | cc = BITTST(r7, TIF_SIGPENDING); | |
737 | if !cc jump .Lsyscall_really_exit; | |
738 | .Lsyscall_do_signals: | |
739 | /* Reenable interrupts. */ | |
740 | [--sp] = reti; | |
9ea7770f | 741 | sp += 4; |
1394f032 BW |
742 | |
743 | r0 = sp; | |
744 | SP += -12; | |
745 | call _do_signal; | |
746 | SP += 12; | |
747 | ||
748 | .Lsyscall_really_exit: | |
749 | r5 = [sp + PT_RESERVED]; | |
750 | rets = r5; | |
751 | rts; | |
51be24c3 | 752 | ENDPROC(_system_call) |
1394f032 | 753 | |
47664c1f MF |
754 | /* Do not mark as ENTRY() to avoid error in assembler ... |
755 | * this symbol need not be global anyways, so ... | |
756 | */ | |
1394f032 BW |
757 | _sys_trace: |
758 | call _syscall_trace; | |
759 | ||
760 | /* Execute the appropriate system call */ | |
761 | ||
762 | p4 = [SP + PT_P0]; | |
763 | p5.l = _sys_call_table; | |
764 | p5.h = _sys_call_table; | |
765 | p5 = p5 + (p4 << 2); | |
766 | r0 = [sp + PT_R0]; | |
767 | r1 = [sp + PT_R1]; | |
768 | r2 = [sp + PT_R2]; | |
769 | r3 = [sp + PT_R3]; | |
770 | r4 = [sp + PT_R4]; | |
771 | r5 = [sp + PT_R5]; | |
772 | p5 = [p5]; | |
773 | ||
774 | [--sp] = r5; | |
775 | [--sp] = r4; | |
776 | [--sp] = r3; | |
777 | SP += -12; | |
778 | call (p5); | |
779 | SP += 24; | |
780 | [sp + PT_R0] = r0; | |
781 | ||
782 | call _syscall_trace; | |
783 | jump .Lresume_userspace; | |
51be24c3 | 784 | ENDPROC(_sys_trace) |
1394f032 BW |
785 | |
786 | ENTRY(_resume) | |
787 | /* | |
788 | * Beware - when entering resume, prev (the current task) is | |
789 | * in r0, next (the new task) is in r1. | |
790 | */ | |
791 | p0 = r0; | |
792 | p1 = r1; | |
793 | [--sp] = rets; | |
794 | [--sp] = fp; | |
795 | [--sp] = (r7:4, p5:3); | |
796 | ||
797 | /* save usp */ | |
798 | p2 = usp; | |
799 | [p0+(TASK_THREAD+THREAD_USP)] = p2; | |
800 | ||
801 | /* save current kernel stack pointer */ | |
802 | [p0+(TASK_THREAD+THREAD_KSP)] = sp; | |
803 | ||
804 | /* save program counter */ | |
805 | r1.l = _new_old_task; | |
806 | r1.h = _new_old_task; | |
807 | [p0+(TASK_THREAD+THREAD_PC)] = r1; | |
808 | ||
809 | /* restore the kernel stack pointer */ | |
810 | sp = [p1+(TASK_THREAD+THREAD_KSP)]; | |
811 | ||
812 | /* restore user stack pointer */ | |
813 | p0 = [p1+(TASK_THREAD+THREAD_USP)]; | |
814 | usp = p0; | |
815 | ||
816 | /* restore pc */ | |
817 | p0 = [p1+(TASK_THREAD+THREAD_PC)]; | |
818 | jump (p0); | |
819 | ||
820 | /* | |
821 | * Following code actually lands up in a new (old) task. | |
822 | */ | |
823 | ||
824 | _new_old_task: | |
825 | (r7:4, p5:3) = [sp++]; | |
826 | fp = [sp++]; | |
827 | rets = [sp++]; | |
828 | ||
829 | /* | |
830 | * When we come out of resume, r0 carries "old" task, becuase we are | |
831 | * in "new" task. | |
832 | */ | |
833 | rts; | |
51be24c3 | 834 | ENDPROC(_resume) |
1394f032 BW |
835 | |
836 | ENTRY(_ret_from_exception) | |
9bd50df6 | 837 | #ifdef CONFIG_IPIPE |
f4e12939 PG |
838 | p2.l = _per_cpu__ipipe_percpu_domain; |
839 | p2.h = _per_cpu__ipipe_percpu_domain; | |
840 | r0.l = _ipipe_root; | |
841 | r0.h = _ipipe_root; | |
842 | r2 = [p2]; | |
843 | cc = r0 == r2; | |
844 | if !cc jump 4f; /* not on behalf of the root domain, get out */ | |
9bd50df6 | 845 | #endif /* CONFIG_IPIPE */ |
1394f032 BW |
846 | p2.l = lo(IPEND); |
847 | p2.h = hi(IPEND); | |
848 | ||
849 | csync; | |
850 | r0 = [p2]; | |
851 | [sp + PT_IPEND] = r0; | |
852 | ||
853 | 1: | |
d5c4b5e3 | 854 | r2 = LO(~0x37) (Z); |
1394f032 BW |
855 | r0 = r2 & r0; |
856 | cc = r0 == 0; | |
857 | if !cc jump 4f; /* if not return to user mode, get out */ | |
858 | ||
859 | /* Make sure any pending system call or deferred exception | |
860 | * return in ILAT for this process to get executed, otherwise | |
861 | * in case context switch happens, system call of | |
862 | * first process (i.e in ILAT) will be carried | |
863 | * forward to the switched process | |
864 | */ | |
865 | ||
866 | p2.l = lo(ILAT); | |
867 | p2.h = hi(ILAT); | |
868 | r0 = [p2]; | |
869 | r1 = (EVT_IVG14 | EVT_IVG15) (z); | |
870 | r0 = r0 & r1; | |
871 | cc = r0 == 0; | |
872 | if !cc jump 5f; | |
873 | ||
874 | /* Set the stack for the current process */ | |
875 | r7 = sp; | |
876 | r4.l = lo(ALIGN_PAGE_MASK); | |
877 | r4.h = hi(ALIGN_PAGE_MASK); | |
878 | r7 = r7 & r4; /* thread_info->flags */ | |
879 | p5 = r7; | |
880 | r7 = [p5 + TI_FLAGS]; | |
881 | r4.l = lo(_TIF_WORK_MASK); | |
882 | r4.h = hi(_TIF_WORK_MASK); | |
883 | r7 = r7 & r4; | |
884 | cc = r7 == 0; | |
885 | if cc jump 4f; | |
886 | ||
887 | p0.l = lo(EVT15); | |
888 | p0.h = hi(EVT15); | |
889 | p1.l = _schedule_and_signal; | |
890 | p1.h = _schedule_and_signal; | |
891 | [p0] = p1; | |
892 | csync; | |
b9a3899d | 893 | raise 15; /* raise evt15 to do signal or reschedule */ |
1394f032 BW |
894 | 4: |
895 | r0 = syscfg; | |
1997660c | 896 | bitclr(r0, SYSCFG_SSSTEP_P); /* Turn off single step */ |
1394f032 BW |
897 | syscfg = r0; |
898 | 5: | |
899 | rts; | |
51be24c3 | 900 | ENDPROC(_ret_from_exception) |
1394f032 | 901 | |
9bd50df6 PG |
902 | #ifdef CONFIG_IPIPE |
903 | ||
9bd50df6 | 904 | _resume_kernel_from_int: |
9ea7770f PG |
905 | r0.l = ___ipipe_sync_root; |
906 | r0.h = ___ipipe_sync_root; | |
9bd50df6 PG |
907 | [--sp] = rets; |
908 | [--sp] = ( r7:4, p5:3 ); | |
909 | SP += -12; | |
910 | call ___ipipe_call_irqtail | |
911 | SP += 12; | |
912 | ( r7:4, p5:3 ) = [sp++]; | |
913 | rets = [sp++]; | |
914 | rts | |
915 | #else | |
916 | #define _resume_kernel_from_int 2f | |
917 | #endif | |
918 | ||
1394f032 BW |
919 | ENTRY(_return_from_int) |
920 | /* If someone else already raised IRQ 15, do nothing. */ | |
921 | csync; | |
922 | p2.l = lo(ILAT); | |
923 | p2.h = hi(ILAT); | |
924 | r0 = [p2]; | |
925 | cc = bittst (r0, EVT_IVG15_P); | |
926 | if cc jump 2f; | |
927 | ||
928 | /* if not return to user mode, get out */ | |
929 | p2.l = lo(IPEND); | |
930 | p2.h = hi(IPEND); | |
931 | r0 = [p2]; | |
932 | r1 = 0x17(Z); | |
933 | r2 = ~r1; | |
934 | r2.h = 0; | |
935 | r0 = r2 & r0; | |
936 | r1 = 1; | |
937 | r1 = r0 - r1; | |
938 | r2 = r0 & r1; | |
939 | cc = r2 == 0; | |
9bd50df6 | 940 | if !cc jump _resume_kernel_from_int; |
1394f032 BW |
941 | |
942 | /* Lower the interrupt level to 15. */ | |
943 | p0.l = lo(EVT15); | |
944 | p0.h = hi(EVT15); | |
945 | p1.l = _schedule_and_signal_from_int; | |
946 | p1.h = _schedule_and_signal_from_int; | |
947 | [p0] = p1; | |
948 | csync; | |
b9a3899d | 949 | #if ANOMALY_05000281 || ANOMALY_05000461 |
5d750b9e BS |
950 | r0.l = lo(SAFE_USER_INSTRUCTION); |
951 | r0.h = hi(SAFE_USER_INSTRUCTION); | |
1394f032 BW |
952 | reti = r0; |
953 | #endif | |
954 | r0 = 0x801f (z); | |
955 | STI r0; | |
956 | raise 15; /* raise evt15 to do signal or reschedule */ | |
957 | rti; | |
958 | 2: | |
959 | rts; | |
51be24c3 | 960 | ENDPROC(_return_from_int) |
1394f032 BW |
961 | |
962 | ENTRY(_lower_to_irq14) | |
b9a3899d | 963 | #if ANOMALY_05000281 || ANOMALY_05000461 |
5d750b9e BS |
964 | r0.l = lo(SAFE_USER_INSTRUCTION); |
965 | r0.h = hi(SAFE_USER_INSTRUCTION); | |
1394f032 BW |
966 | reti = r0; |
967 | #endif | |
b9a3899d RG |
968 | |
969 | #ifdef CONFIG_DEBUG_HWERR | |
9703a73c | 970 | /* enable irq14 & hwerr interrupt, until we transition to _evt_evt14 */ |
b9a3899d RG |
971 | r0 = (EVT_IVG14 | EVT_IVHW | EVT_IRPTEN | EVT_EVX | EVT_NMI | EVT_RST | EVT_EMU); |
972 | #else | |
9703a73c | 973 | /* Only enable irq14 interrupt, until we transition to _evt_evt14 */ |
b9a3899d RG |
974 | r0 = (EVT_IVG14 | EVT_IRPTEN | EVT_EVX | EVT_NMI | EVT_RST | EVT_EMU); |
975 | #endif | |
1394f032 BW |
976 | sti r0; |
977 | raise 14; | |
978 | rti; | |
b9a3899d RG |
979 | ENDPROC(_lower_to_irq14) |
980 | ||
9703a73c | 981 | ENTRY(_evt_evt14) |
1394f032 | 982 | #ifdef CONFIG_DEBUG_HWERR |
b9a3899d | 983 | r0 = (EVT_IVHW | EVT_IRPTEN | EVT_EVX | EVT_NMI | EVT_RST | EVT_EMU); |
1394f032 BW |
984 | sti r0; |
985 | #else | |
986 | cli r0; | |
987 | #endif | |
988 | [--sp] = RETI; | |
989 | SP += 4; | |
990 | rts; | |
9703a73c | 991 | ENDPROC(_evt_evt14) |
1394f032 | 992 | |
b9a3899d | 993 | ENTRY(_schedule_and_signal_from_int) |
1394f032 BW |
994 | /* To end up here, vector 15 was changed - so we have to change it |
995 | * back. | |
996 | */ | |
997 | p0.l = lo(EVT15); | |
998 | p0.h = hi(EVT15); | |
999 | p1.l = _evt_system_call; | |
1000 | p1.h = _evt_system_call; | |
1001 | [p0] = p1; | |
1002 | csync; | |
c824498d BS |
1003 | |
1004 | /* Set orig_p0 to -1 to indicate this isn't the end of a syscall. */ | |
1005 | r0 = -1 (x); | |
1006 | [sp + PT_ORIG_P0] = r0; | |
1007 | ||
1394f032 BW |
1008 | p1 = rets; |
1009 | [sp + PT_RESERVED] = p1; | |
1010 | ||
6b3087c6 GY |
1011 | #ifdef CONFIG_SMP |
1012 | GET_PDA(p0, r0); /* Fetch current PDA (can't migrate to other CPU here) */ | |
1013 | r0 = [p0 + PDA_IRQFLAGS]; | |
1014 | #else | |
40059784 MF |
1015 | p0.l = _bfin_irq_flags; |
1016 | p0.h = _bfin_irq_flags; | |
1394f032 | 1017 | r0 = [p0]; |
6b3087c6 | 1018 | #endif |
1394f032 BW |
1019 | sti r0; |
1020 | ||
92649494 MF |
1021 | /* finish the userspace "atomic" functions for it */ |
1022 | r1 = FIXED_CODE_END; | |
1023 | r2 = [sp + PT_PC]; | |
1024 | cc = r1 <= r2; | |
1025 | if cc jump .Lresume_userspace (bp); | |
1026 | ||
7adfb58f BS |
1027 | r0 = sp; |
1028 | sp += -12; | |
1029 | call _finish_atomic_sections; | |
1030 | sp += 12; | |
1394f032 | 1031 | jump.s .Lresume_userspace; |
b9a3899d | 1032 | ENDPROC(_schedule_and_signal_from_int) |
1394f032 | 1033 | |
b9a3899d | 1034 | ENTRY(_schedule_and_signal) |
1394f032 BW |
1035 | SAVE_CONTEXT_SYSCALL |
1036 | /* To end up here, vector 15 was changed - so we have to change it | |
1037 | * back. | |
1038 | */ | |
1039 | p0.l = lo(EVT15); | |
1040 | p0.h = hi(EVT15); | |
1041 | p1.l = _evt_system_call; | |
1042 | p1.h = _evt_system_call; | |
1043 | [p0] = p1; | |
1044 | csync; | |
1045 | p0.l = 1f; | |
1046 | p0.h = 1f; | |
1047 | [sp + PT_RESERVED] = P0; | |
1048 | call .Lresume_userspace; | |
1049 | 1: | |
1050 | RESTORE_CONTEXT | |
1051 | rti; | |
b9a3899d | 1052 | ENDPROC(_schedule_and_signal) |
1394f032 | 1053 | |
518039bc RG |
1054 | /* We handle this 100% in exception space - to reduce overhead |
1055 | * Only potiential problem is if the software buffer gets swapped out of the | |
1056 | * CPLB table - then double fault. - so we don't let this happen in other places | |
1057 | */ | |
1058 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND | |
1059 | ENTRY(_ex_trace_buff_full) | |
1060 | [--sp] = P3; | |
1061 | [--sp] = P2; | |
1062 | [--sp] = LC0; | |
1063 | [--sp] = LT0; | |
1064 | [--sp] = LB0; | |
1065 | P5.L = _trace_buff_offset; | |
1066 | P5.H = _trace_buff_offset; | |
1067 | P3 = [P5]; /* trace_buff_offset */ | |
1068 | P5.L = lo(TBUFSTAT); | |
1069 | P5.H = hi(TBUFSTAT); | |
1070 | R7 = [P5]; | |
1071 | R7 <<= 1; /* double, since we need to read twice */ | |
1072 | LC0 = R7; | |
1073 | R7 <<= 2; /* need to shift over again, | |
1074 | * to get the number of bytes */ | |
1075 | P5.L = lo(TBUF); | |
1076 | P5.H = hi(TBUF); | |
1077 | R6 = ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN)*1024) - 1; | |
1078 | ||
1079 | P2 = R7; | |
1080 | P3 = P3 + P2; | |
1081 | R7 = P3; | |
1082 | R7 = R7 & R6; | |
1083 | P3 = R7; | |
1084 | P2.L = _trace_buff_offset; | |
1085 | P2.H = _trace_buff_offset; | |
1086 | [P2] = P3; | |
1087 | ||
1088 | P2.L = _software_trace_buff; | |
1089 | P2.H = _software_trace_buff; | |
1090 | ||
1091 | LSETUP (.Lstart, .Lend) LC0; | |
1092 | .Lstart: | |
1093 | R7 = [P5]; /* read TBUF */ | |
1094 | P4 = P3 + P2; | |
1095 | [P4] = R7; | |
1096 | P3 += -4; | |
1097 | R7 = P3; | |
1098 | R7 = R7 & R6; | |
1099 | .Lend: | |
1100 | P3 = R7; | |
1101 | ||
1102 | LB0 = [sp++]; | |
1103 | LT0 = [sp++]; | |
1104 | LC0 = [sp++]; | |
1105 | P2 = [sp++]; | |
1106 | P3 = [sp++]; | |
8d6c2420 | 1107 | jump _bfin_return_from_exception; |
337d390b | 1108 | ENDPROC(_ex_trace_buff_full) |
518039bc RG |
1109 | |
1110 | #if CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN == 4 | |
1111 | .data | |
1112 | #else | |
1113 | .section .l1.data.B | |
337d390b | 1114 | #endif /* CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN */ |
518039bc RG |
1115 | ENTRY(_trace_buff_offset) |
1116 | .long 0; | |
1117 | ALIGN | |
1118 | ENTRY(_software_trace_buff) | |
1119 | .rept ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN)*256); | |
1120 | .long 0 | |
1121 | .endr | |
337d390b RG |
1122 | #endif /* CONFIG_DEBUG_BFIN_HWTRACE_EXPAND */ |
1123 | ||
1124 | #if CONFIG_EARLY_PRINTK | |
9cb07b23 | 1125 | __INIT |
337d390b RG |
1126 | ENTRY(_early_trap) |
1127 | SAVE_ALL_SYS | |
1128 | trace_buffer_stop(p0,r0); | |
1129 | ||
dedfd5d7 | 1130 | ANOMALY_283_315_WORKAROUND(p4, r5) |
5e9e7687 | 1131 | |
337d390b RG |
1132 | /* Turn caches off, to ensure we don't get double exceptions */ |
1133 | ||
1134 | P4.L = LO(IMEM_CONTROL); | |
1135 | P4.H = HI(IMEM_CONTROL); | |
1136 | ||
1137 | R5 = [P4]; /* Control Register*/ | |
1138 | BITCLR(R5,ENICPLB_P); | |
eb7bd9c4 | 1139 | CSYNC; /* Disabling of CPLBs should be proceeded by a CSYNC */ |
337d390b RG |
1140 | [P4] = R5; |
1141 | SSYNC; | |
1142 | ||
1143 | P4.L = LO(DMEM_CONTROL); | |
1144 | P4.H = HI(DMEM_CONTROL); | |
1145 | R5 = [P4]; | |
1146 | BITCLR(R5,ENDCPLB_P); | |
eb7bd9c4 | 1147 | CSYNC; /* Disabling of CPLBs should be proceeded by a CSYNC */ |
337d390b RG |
1148 | [P4] = R5; |
1149 | SSYNC; | |
337d390b RG |
1150 | |
1151 | r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ | |
1152 | r1 = RETX; | |
1153 | ||
1154 | SP += -12; | |
1155 | call _early_trap_c; | |
1156 | SP += 12; | |
1157 | ENDPROC(_early_trap) | |
9cb07b23 | 1158 | __FINIT |
337d390b | 1159 | #endif /* CONFIG_EARLY_PRINTK */ |
518039bc | 1160 | |
1394f032 BW |
1161 | /* |
1162 | * Put these in the kernel data section - that should always be covered by | |
1163 | * a CPLB. This is needed to ensure we don't get double fault conditions | |
1164 | */ | |
1165 | ||
1166 | #ifdef CONFIG_SYSCALL_TAB_L1 | |
1167 | .section .l1.data | |
1168 | #else | |
1169 | .data | |
1170 | #endif | |
f26fbc48 | 1171 | |
1ffe6646 | 1172 | ENTRY(_ex_table) |
1394f032 | 1173 | /* entry for each EXCAUSE[5:0] |
9401e618 | 1174 | * This table must be in sync with the table in ./kernel/traps.c |
1394f032 BW |
1175 | * EXCPT instruction can provide 4 bits of EXCAUSE, allowing 16 to be user defined |
1176 | */ | |
1ffe6646 | 1177 | .long _ex_syscall /* 0x00 - User Defined - Linux Syscall */ |
3aee91ba | 1178 | .long _ex_trap_c /* 0x01 - User Defined - Software breakpoint */ |
a5ac0129 SZ |
1179 | #ifdef CONFIG_KGDB |
1180 | .long _ex_trap_c /* 0x02 - User Defined - KGDB initial connection | |
1181 | and break signal trap */ | |
1182 | #else | |
1ffe6646 | 1183 | .long _ex_replaceable /* 0x02 - User Defined */ |
a5ac0129 | 1184 | #endif |
9401e618 | 1185 | .long _ex_trap_c /* 0x03 - User Defined - userspace stack overflow */ |
9f336a53 | 1186 | .long _ex_trap_c /* 0x04 - User Defined - dump trace buffer */ |
1ffe6646 MF |
1187 | .long _ex_replaceable /* 0x05 - User Defined */ |
1188 | .long _ex_replaceable /* 0x06 - User Defined */ | |
1189 | .long _ex_replaceable /* 0x07 - User Defined */ | |
1190 | .long _ex_replaceable /* 0x08 - User Defined */ | |
1191 | .long _ex_replaceable /* 0x09 - User Defined */ | |
1192 | .long _ex_replaceable /* 0x0A - User Defined */ | |
1193 | .long _ex_replaceable /* 0x0B - User Defined */ | |
1194 | .long _ex_replaceable /* 0x0C - User Defined */ | |
1195 | .long _ex_replaceable /* 0x0D - User Defined */ | |
1196 | .long _ex_replaceable /* 0x0E - User Defined */ | |
1197 | .long _ex_replaceable /* 0x0F - User Defined */ | |
1394f032 | 1198 | .long _ex_single_step /* 0x10 - HW Single step */ |
518039bc RG |
1199 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND |
1200 | .long _ex_trace_buff_full /* 0x11 - Trace Buffer Full */ | |
1201 | #else | |
1394f032 | 1202 | .long _ex_trap_c /* 0x11 - Trace Buffer Full */ |
518039bc | 1203 | #endif |
1394f032 BW |
1204 | .long _ex_trap_c /* 0x12 - Reserved */ |
1205 | .long _ex_trap_c /* 0x13 - Reserved */ | |
1206 | .long _ex_trap_c /* 0x14 - Reserved */ | |
1207 | .long _ex_trap_c /* 0x15 - Reserved */ | |
1208 | .long _ex_trap_c /* 0x16 - Reserved */ | |
1209 | .long _ex_trap_c /* 0x17 - Reserved */ | |
1210 | .long _ex_trap_c /* 0x18 - Reserved */ | |
1211 | .long _ex_trap_c /* 0x19 - Reserved */ | |
1212 | .long _ex_trap_c /* 0x1A - Reserved */ | |
1213 | .long _ex_trap_c /* 0x1B - Reserved */ | |
1214 | .long _ex_trap_c /* 0x1C - Reserved */ | |
1215 | .long _ex_trap_c /* 0x1D - Reserved */ | |
1216 | .long _ex_trap_c /* 0x1E - Reserved */ | |
1217 | .long _ex_trap_c /* 0x1F - Reserved */ | |
1218 | .long _ex_trap_c /* 0x20 - Reserved */ | |
1219 | .long _ex_trap_c /* 0x21 - Undefined Instruction */ | |
1220 | .long _ex_trap_c /* 0x22 - Illegal Instruction Combination */ | |
f26fbc48 | 1221 | .long _ex_dviol /* 0x23 - Data CPLB Protection Violation */ |
1394f032 BW |
1222 | .long _ex_trap_c /* 0x24 - Data access misaligned */ |
1223 | .long _ex_trap_c /* 0x25 - Unrecoverable Event */ | |
f26fbc48 RG |
1224 | .long _ex_dmiss /* 0x26 - Data CPLB Miss */ |
1225 | .long _ex_dmult /* 0x27 - Data CPLB Multiple Hits - Linux Trap Zero */ | |
1394f032 BW |
1226 | .long _ex_trap_c /* 0x28 - Emulation Watchpoint */ |
1227 | .long _ex_trap_c /* 0x29 - Instruction fetch access error (535 only) */ | |
1228 | .long _ex_trap_c /* 0x2A - Instruction fetch misaligned */ | |
f26fbc48 RG |
1229 | .long _ex_trap_c /* 0x2B - Instruction CPLB protection Violation */ |
1230 | .long _ex_icplb_miss /* 0x2C - Instruction CPLB miss */ | |
1394f032 BW |
1231 | .long _ex_trap_c /* 0x2D - Instruction CPLB Multiple Hits */ |
1232 | .long _ex_trap_c /* 0x2E - Illegal use of Supervisor Resource */ | |
1233 | .long _ex_trap_c /* 0x2E - Illegal use of Supervisor Resource */ | |
1234 | .long _ex_trap_c /* 0x2F - Reserved */ | |
1235 | .long _ex_trap_c /* 0x30 - Reserved */ | |
1236 | .long _ex_trap_c /* 0x31 - Reserved */ | |
1237 | .long _ex_trap_c /* 0x32 - Reserved */ | |
1238 | .long _ex_trap_c /* 0x33 - Reserved */ | |
1239 | .long _ex_trap_c /* 0x34 - Reserved */ | |
1240 | .long _ex_trap_c /* 0x35 - Reserved */ | |
1241 | .long _ex_trap_c /* 0x36 - Reserved */ | |
1242 | .long _ex_trap_c /* 0x37 - Reserved */ | |
1243 | .long _ex_trap_c /* 0x38 - Reserved */ | |
1244 | .long _ex_trap_c /* 0x39 - Reserved */ | |
1245 | .long _ex_trap_c /* 0x3A - Reserved */ | |
1246 | .long _ex_trap_c /* 0x3B - Reserved */ | |
1247 | .long _ex_trap_c /* 0x3C - Reserved */ | |
1248 | .long _ex_trap_c /* 0x3D - Reserved */ | |
1249 | .long _ex_trap_c /* 0x3E - Reserved */ | |
1250 | .long _ex_trap_c /* 0x3F - Reserved */ | |
1ffe6646 | 1251 | END(_ex_table) |
1394f032 | 1252 | |
1394f032 | 1253 | ENTRY(_sys_call_table) |
0b95f22b | 1254 | .long _sys_restart_syscall /* 0 */ |
1394f032 BW |
1255 | .long _sys_exit |
1256 | .long _sys_fork | |
1257 | .long _sys_read | |
1258 | .long _sys_write | |
1259 | .long _sys_open /* 5 */ | |
1260 | .long _sys_close | |
1261 | .long _sys_ni_syscall /* old waitpid */ | |
1262 | .long _sys_creat | |
1263 | .long _sys_link | |
1264 | .long _sys_unlink /* 10 */ | |
1265 | .long _sys_execve | |
1266 | .long _sys_chdir | |
1267 | .long _sys_time | |
1268 | .long _sys_mknod | |
1269 | .long _sys_chmod /* 15 */ | |
1270 | .long _sys_chown /* chown16 */ | |
1271 | .long _sys_ni_syscall /* old break syscall holder */ | |
1272 | .long _sys_ni_syscall /* old stat */ | |
1273 | .long _sys_lseek | |
1274 | .long _sys_getpid /* 20 */ | |
1275 | .long _sys_mount | |
1276 | .long _sys_ni_syscall /* old umount */ | |
1277 | .long _sys_setuid | |
1278 | .long _sys_getuid | |
1279 | .long _sys_stime /* 25 */ | |
1280 | .long _sys_ptrace | |
1281 | .long _sys_alarm | |
1282 | .long _sys_ni_syscall /* old fstat */ | |
1283 | .long _sys_pause | |
1284 | .long _sys_ni_syscall /* old utime */ /* 30 */ | |
1285 | .long _sys_ni_syscall /* old stty syscall holder */ | |
1286 | .long _sys_ni_syscall /* old gtty syscall holder */ | |
1287 | .long _sys_access | |
1288 | .long _sys_nice | |
1289 | .long _sys_ni_syscall /* 35 */ /* old ftime syscall holder */ | |
1290 | .long _sys_sync | |
1291 | .long _sys_kill | |
1292 | .long _sys_rename | |
1293 | .long _sys_mkdir | |
1294 | .long _sys_rmdir /* 40 */ | |
1295 | .long _sys_dup | |
1296 | .long _sys_pipe | |
1297 | .long _sys_times | |
1298 | .long _sys_ni_syscall /* old prof syscall holder */ | |
1299 | .long _sys_brk /* 45 */ | |
1300 | .long _sys_setgid | |
1301 | .long _sys_getgid | |
1302 | .long _sys_ni_syscall /* old sys_signal */ | |
1303 | .long _sys_geteuid /* geteuid16 */ | |
1304 | .long _sys_getegid /* getegid16 */ /* 50 */ | |
1305 | .long _sys_acct | |
1306 | .long _sys_umount /* recycled never used phys() */ | |
1307 | .long _sys_ni_syscall /* old lock syscall holder */ | |
1308 | .long _sys_ioctl | |
1309 | .long _sys_fcntl /* 55 */ | |
1310 | .long _sys_ni_syscall /* old mpx syscall holder */ | |
1311 | .long _sys_setpgid | |
1312 | .long _sys_ni_syscall /* old ulimit syscall holder */ | |
1313 | .long _sys_ni_syscall /* old old uname */ | |
1314 | .long _sys_umask /* 60 */ | |
1315 | .long _sys_chroot | |
1316 | .long _sys_ustat | |
1317 | .long _sys_dup2 | |
1318 | .long _sys_getppid | |
1319 | .long _sys_getpgrp /* 65 */ | |
1320 | .long _sys_setsid | |
1321 | .long _sys_ni_syscall /* old sys_sigaction */ | |
1322 | .long _sys_sgetmask | |
1323 | .long _sys_ssetmask | |
1324 | .long _sys_setreuid /* setreuid16 */ /* 70 */ | |
1325 | .long _sys_setregid /* setregid16 */ | |
1326 | .long _sys_ni_syscall /* old sys_sigsuspend */ | |
1327 | .long _sys_ni_syscall /* old sys_sigpending */ | |
1328 | .long _sys_sethostname | |
1329 | .long _sys_setrlimit /* 75 */ | |
1330 | .long _sys_ni_syscall /* old getrlimit */ | |
1331 | .long _sys_getrusage | |
1332 | .long _sys_gettimeofday | |
1333 | .long _sys_settimeofday | |
1334 | .long _sys_getgroups /* getgroups16 */ /* 80 */ | |
1335 | .long _sys_setgroups /* setgroups16 */ | |
1336 | .long _sys_ni_syscall /* old_select */ | |
1337 | .long _sys_symlink | |
1338 | .long _sys_ni_syscall /* old lstat */ | |
1339 | .long _sys_readlink /* 85 */ | |
1340 | .long _sys_uselib | |
1341 | .long _sys_ni_syscall /* sys_swapon */ | |
1342 | .long _sys_reboot | |
1343 | .long _sys_ni_syscall /* old_readdir */ | |
1344 | .long _sys_ni_syscall /* sys_mmap */ /* 90 */ | |
1345 | .long _sys_munmap | |
1346 | .long _sys_truncate | |
1347 | .long _sys_ftruncate | |
1348 | .long _sys_fchmod | |
1349 | .long _sys_fchown /* fchown16 */ /* 95 */ | |
1350 | .long _sys_getpriority | |
1351 | .long _sys_setpriority | |
1352 | .long _sys_ni_syscall /* old profil syscall holder */ | |
1353 | .long _sys_statfs | |
1354 | .long _sys_fstatfs /* 100 */ | |
1355 | .long _sys_ni_syscall | |
1356 | .long _sys_ni_syscall /* old sys_socketcall */ | |
1357 | .long _sys_syslog | |
1358 | .long _sys_setitimer | |
1359 | .long _sys_getitimer /* 105 */ | |
1360 | .long _sys_newstat | |
1361 | .long _sys_newlstat | |
1362 | .long _sys_newfstat | |
1363 | .long _sys_ni_syscall /* old uname */ | |
1364 | .long _sys_ni_syscall /* iopl for i386 */ /* 110 */ | |
1365 | .long _sys_vhangup | |
1366 | .long _sys_ni_syscall /* obsolete idle() syscall */ | |
1367 | .long _sys_ni_syscall /* vm86old for i386 */ | |
1368 | .long _sys_wait4 | |
1369 | .long _sys_ni_syscall /* 115 */ /* sys_swapoff */ | |
1370 | .long _sys_sysinfo | |
1371 | .long _sys_ni_syscall /* old sys_ipc */ | |
1372 | .long _sys_fsync | |
1373 | .long _sys_ni_syscall /* old sys_sigreturn */ | |
1374 | .long _sys_clone /* 120 */ | |
1375 | .long _sys_setdomainname | |
1376 | .long _sys_newuname | |
1377 | .long _sys_ni_syscall /* old sys_modify_ldt */ | |
1378 | .long _sys_adjtimex | |
1379 | .long _sys_ni_syscall /* 125 */ /* sys_mprotect */ | |
1380 | .long _sys_ni_syscall /* old sys_sigprocmask */ | |
1381 | .long _sys_ni_syscall /* old "creat_module" */ | |
1382 | .long _sys_init_module | |
1383 | .long _sys_delete_module | |
1384 | .long _sys_ni_syscall /* 130: old "get_kernel_syms" */ | |
1385 | .long _sys_quotactl | |
1386 | .long _sys_getpgid | |
1387 | .long _sys_fchdir | |
1388 | .long _sys_bdflush | |
1389 | .long _sys_ni_syscall /* 135 */ /* sys_sysfs */ | |
1390 | .long _sys_personality | |
1391 | .long _sys_ni_syscall /* for afs_syscall */ | |
1392 | .long _sys_setfsuid /* setfsuid16 */ | |
1393 | .long _sys_setfsgid /* setfsgid16 */ | |
1394 | .long _sys_llseek /* 140 */ | |
1395 | .long _sys_getdents | |
1396 | .long _sys_ni_syscall /* sys_select */ | |
1397 | .long _sys_flock | |
1398 | .long _sys_ni_syscall /* sys_msync */ | |
1399 | .long _sys_readv /* 145 */ | |
1400 | .long _sys_writev | |
1401 | .long _sys_getsid | |
1402 | .long _sys_fdatasync | |
1403 | .long _sys_sysctl | |
1404 | .long _sys_ni_syscall /* 150 */ /* sys_mlock */ | |
1405 | .long _sys_ni_syscall /* sys_munlock */ | |
1406 | .long _sys_ni_syscall /* sys_mlockall */ | |
1407 | .long _sys_ni_syscall /* sys_munlockall */ | |
1408 | .long _sys_sched_setparam | |
1409 | .long _sys_sched_getparam /* 155 */ | |
1410 | .long _sys_sched_setscheduler | |
1411 | .long _sys_sched_getscheduler | |
1412 | .long _sys_sched_yield | |
1413 | .long _sys_sched_get_priority_max | |
1414 | .long _sys_sched_get_priority_min /* 160 */ | |
1415 | .long _sys_sched_rr_get_interval | |
1416 | .long _sys_nanosleep | |
0b95f22b | 1417 | .long _sys_mremap |
1394f032 BW |
1418 | .long _sys_setresuid /* setresuid16 */ |
1419 | .long _sys_getresuid /* getresuid16 */ /* 165 */ | |
1420 | .long _sys_ni_syscall /* for vm86 */ | |
1421 | .long _sys_ni_syscall /* old "query_module" */ | |
1422 | .long _sys_ni_syscall /* sys_poll */ | |
0b95f22b | 1423 | .long _sys_nfsservctl |
1394f032 BW |
1424 | .long _sys_setresgid /* setresgid16 */ /* 170 */ |
1425 | .long _sys_getresgid /* getresgid16 */ | |
1426 | .long _sys_prctl | |
1427 | .long _sys_rt_sigreturn | |
1428 | .long _sys_rt_sigaction | |
1429 | .long _sys_rt_sigprocmask /* 175 */ | |
1430 | .long _sys_rt_sigpending | |
1431 | .long _sys_rt_sigtimedwait | |
1432 | .long _sys_rt_sigqueueinfo | |
1433 | .long _sys_rt_sigsuspend | |
1434 | .long _sys_pread64 /* 180 */ | |
1435 | .long _sys_pwrite64 | |
1436 | .long _sys_lchown /* lchown16 */ | |
1437 | .long _sys_getcwd | |
1438 | .long _sys_capget | |
1439 | .long _sys_capset /* 185 */ | |
1440 | .long _sys_sigaltstack | |
1441 | .long _sys_sendfile | |
1442 | .long _sys_ni_syscall /* streams1 */ | |
1443 | .long _sys_ni_syscall /* streams2 */ | |
1444 | .long _sys_vfork /* 190 */ | |
1445 | .long _sys_getrlimit | |
1446 | .long _sys_mmap2 | |
1447 | .long _sys_truncate64 | |
1448 | .long _sys_ftruncate64 | |
1449 | .long _sys_stat64 /* 195 */ | |
1450 | .long _sys_lstat64 | |
1451 | .long _sys_fstat64 | |
1452 | .long _sys_chown | |
1453 | .long _sys_getuid | |
1454 | .long _sys_getgid /* 200 */ | |
1455 | .long _sys_geteuid | |
1456 | .long _sys_getegid | |
1457 | .long _sys_setreuid | |
1458 | .long _sys_setregid | |
1459 | .long _sys_getgroups /* 205 */ | |
1460 | .long _sys_setgroups | |
1461 | .long _sys_fchown | |
1462 | .long _sys_setresuid | |
1463 | .long _sys_getresuid | |
1464 | .long _sys_setresgid /* 210 */ | |
1465 | .long _sys_getresgid | |
1466 | .long _sys_lchown | |
1467 | .long _sys_setuid | |
1468 | .long _sys_setgid | |
1469 | .long _sys_setfsuid /* 215 */ | |
1470 | .long _sys_setfsgid | |
1471 | .long _sys_pivot_root | |
1472 | .long _sys_ni_syscall /* sys_mincore */ | |
1473 | .long _sys_ni_syscall /* sys_madvise */ | |
1474 | .long _sys_getdents64 /* 220 */ | |
1475 | .long _sys_fcntl64 | |
1476 | .long _sys_ni_syscall /* reserved for TUX */ | |
1477 | .long _sys_ni_syscall | |
1478 | .long _sys_gettid | |
0b95f22b | 1479 | .long _sys_readahead /* 225 */ |
1394f032 BW |
1480 | .long _sys_setxattr |
1481 | .long _sys_lsetxattr | |
1482 | .long _sys_fsetxattr | |
1483 | .long _sys_getxattr | |
1484 | .long _sys_lgetxattr /* 230 */ | |
1485 | .long _sys_fgetxattr | |
1486 | .long _sys_listxattr | |
1487 | .long _sys_llistxattr | |
1488 | .long _sys_flistxattr | |
1489 | .long _sys_removexattr /* 235 */ | |
1490 | .long _sys_lremovexattr | |
1491 | .long _sys_fremovexattr | |
1492 | .long _sys_tkill | |
1493 | .long _sys_sendfile64 | |
1494 | .long _sys_futex /* 240 */ | |
1495 | .long _sys_sched_setaffinity | |
1496 | .long _sys_sched_getaffinity | |
1497 | .long _sys_ni_syscall /* sys_set_thread_area */ | |
1498 | .long _sys_ni_syscall /* sys_get_thread_area */ | |
1499 | .long _sys_io_setup /* 245 */ | |
1500 | .long _sys_io_destroy | |
1501 | .long _sys_io_getevents | |
1502 | .long _sys_io_submit | |
1503 | .long _sys_io_cancel | |
1504 | .long _sys_ni_syscall /* 250 */ /* sys_alloc_hugepages */ | |
1505 | .long _sys_ni_syscall /* sys_freec_hugepages */ | |
1506 | .long _sys_exit_group | |
1507 | .long _sys_lookup_dcookie | |
1508 | .long _sys_bfin_spinlock | |
1509 | .long _sys_epoll_create /* 255 */ | |
1510 | .long _sys_epoll_ctl | |
1511 | .long _sys_epoll_wait | |
1512 | .long _sys_ni_syscall /* remap_file_pages */ | |
1513 | .long _sys_set_tid_address | |
1514 | .long _sys_timer_create /* 260 */ | |
1515 | .long _sys_timer_settime | |
1516 | .long _sys_timer_gettime | |
1517 | .long _sys_timer_getoverrun | |
1518 | .long _sys_timer_delete | |
1519 | .long _sys_clock_settime /* 265 */ | |
1520 | .long _sys_clock_gettime | |
1521 | .long _sys_clock_getres | |
1522 | .long _sys_clock_nanosleep | |
1523 | .long _sys_statfs64 | |
1524 | .long _sys_fstatfs64 /* 270 */ | |
1525 | .long _sys_tgkill | |
1526 | .long _sys_utimes | |
1527 | .long _sys_fadvise64_64 | |
1528 | .long _sys_ni_syscall /* vserver */ | |
1529 | .long _sys_ni_syscall /* 275, mbind */ | |
1530 | .long _sys_ni_syscall /* get_mempolicy */ | |
1531 | .long _sys_ni_syscall /* set_mempolicy */ | |
1532 | .long _sys_mq_open | |
1533 | .long _sys_mq_unlink | |
1534 | .long _sys_mq_timedsend /* 280 */ | |
1535 | .long _sys_mq_timedreceive | |
1536 | .long _sys_mq_notify | |
1537 | .long _sys_mq_getsetattr | |
1538 | .long _sys_ni_syscall /* kexec_load */ | |
1539 | .long _sys_waitid /* 285 */ | |
1540 | .long _sys_add_key | |
1541 | .long _sys_request_key | |
1542 | .long _sys_keyctl | |
1543 | .long _sys_ioprio_set | |
1544 | .long _sys_ioprio_get /* 290 */ | |
1545 | .long _sys_inotify_init | |
1546 | .long _sys_inotify_add_watch | |
1547 | .long _sys_inotify_rm_watch | |
1548 | .long _sys_ni_syscall /* migrate_pages */ | |
1549 | .long _sys_openat /* 295 */ | |
1550 | .long _sys_mkdirat | |
1551 | .long _sys_mknodat | |
1552 | .long _sys_fchownat | |
1553 | .long _sys_futimesat | |
1554 | .long _sys_fstatat64 /* 300 */ | |
1555 | .long _sys_unlinkat | |
1556 | .long _sys_renameat | |
1557 | .long _sys_linkat | |
1558 | .long _sys_symlinkat | |
1559 | .long _sys_readlinkat /* 305 */ | |
1560 | .long _sys_fchmodat | |
1561 | .long _sys_faccessat | |
1562 | .long _sys_pselect6 | |
1563 | .long _sys_ppoll | |
1564 | .long _sys_unshare /* 310 */ | |
1565 | .long _sys_sram_alloc | |
1566 | .long _sys_sram_free | |
1567 | .long _sys_dma_memcpy | |
1568 | .long _sys_accept | |
1569 | .long _sys_bind /* 315 */ | |
1570 | .long _sys_connect | |
1571 | .long _sys_getpeername | |
1572 | .long _sys_getsockname | |
1573 | .long _sys_getsockopt | |
1574 | .long _sys_listen /* 320 */ | |
1575 | .long _sys_recv | |
1576 | .long _sys_recvfrom | |
1577 | .long _sys_recvmsg | |
1578 | .long _sys_send | |
1579 | .long _sys_sendmsg /* 325 */ | |
1580 | .long _sys_sendto | |
1581 | .long _sys_setsockopt | |
1582 | .long _sys_shutdown | |
1583 | .long _sys_socket | |
1584 | .long _sys_socketpair /* 330 */ | |
1585 | .long _sys_semctl | |
1586 | .long _sys_semget | |
1587 | .long _sys_semop | |
1588 | .long _sys_msgctl | |
1589 | .long _sys_msgget /* 335 */ | |
1590 | .long _sys_msgrcv | |
1591 | .long _sys_msgsnd | |
1592 | .long _sys_shmat | |
1593 | .long _sys_shmctl | |
1594 | .long _sys_shmdt /* 340 */ | |
1595 | .long _sys_shmget | |
0b95f22b BW |
1596 | .long _sys_splice |
1597 | .long _sys_sync_file_range | |
1598 | .long _sys_tee | |
1599 | .long _sys_vmsplice /* 345 */ | |
1600 | .long _sys_epoll_pwait | |
1601 | .long _sys_utimensat | |
1602 | .long _sys_signalfd | |
2f775dba | 1603 | .long _sys_timerfd_create |
0b95f22b BW |
1604 | .long _sys_eventfd /* 350 */ |
1605 | .long _sys_pread64 | |
1606 | .long _sys_pwrite64 | |
1607 | .long _sys_fadvise64 | |
1608 | .long _sys_set_robust_list | |
1609 | .long _sys_get_robust_list /* 355 */ | |
1610 | .long _sys_fallocate | |
fc97551d | 1611 | .long _sys_semtimedop |
2f775dba BW |
1612 | .long _sys_timerfd_settime |
1613 | .long _sys_timerfd_gettime | |
a4b7b6d7 BW |
1614 | .long _sys_signalfd4 /* 360 */ |
1615 | .long _sys_eventfd2 | |
1616 | .long _sys_epoll_create1 | |
1617 | .long _sys_dup3 | |
1618 | .long _sys_pipe2 | |
1619 | .long _sys_inotify_init1 /* 365 */ | |
7a1450fd MF |
1620 | .long _sys_preadv |
1621 | .long _sys_pwritev | |
61cdd7a2 | 1622 | .long _sys_rt_tgsigqueueinfo |
cdd6c482 | 1623 | .long _sys_perf_event_open |
2f775dba | 1624 | |
1394f032 BW |
1625 | .rept NR_syscalls-(.-_sys_call_table)/4 |
1626 | .long _sys_ni_syscall | |
1627 | .endr | |
0c7a6b21 | 1628 | END(_sys_call_table) |