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Blackfin arch: convert READY to DMA_READY as it causes build errors in common sound...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / blackfin / mach-common / entry.S
CommitLineData
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
36
37#include <linux/linkage.h>
1f83b8f1 38#include <linux/unistd.h>
1394f032 39#include <asm/blackfin.h>
1394f032
BW		 40#include <asm/errno.h>
41#include <asm/thread_info.h> /* TIF_NEED_RESCHED */
42#include <asm/asm-offsets.h>
669b792c 43#include <asm/trace.h>
1394f032
BW		 44
45#include <asm/mach-common/context.S>
46
f0b5d12f
MF		 47#if defined(CONFIG_BFIN_SCRATCH_REG_RETN)
48# define EX_SCRATCH_REG RETN
49#elif defined(CONFIG_BFIN_SCRATCH_REG_RETE)
50# define EX_SCRATCH_REG RETE
51#else
52# define EX_SCRATCH_REG CYCLES
53#endif
54
b3f8b927
RG		 55#if ANOMALY_05000281
56ENTRY(_safe_speculative_execution)
57 NOP;
58 NOP;
59 NOP;
60 jump _safe_speculative_execution;
61ENDPROC(_safe_speculative_execution)
62#endif
63
1394f032
BW		 64#ifdef CONFIG_EXCPT_IRQ_SYSC_L1
65.section .l1.text
66#else
67.text
68#endif
69
70/* Slightly simplified and streamlined entry point for CPLB misses.
71 * This one does not lower the level to IRQ5, and thus can be used to
72 * patch up CPLB misses on the kernel stack.
73 */
1aafd909 74#if ANOMALY_05000261
f26fbc48
RG		 75#define _ex_dviol _ex_workaround_261
76#define _ex_dmiss _ex_workaround_261
77#define _ex_dmult _ex_workaround_261
78
79ENTRY(_ex_workaround_261)
1394f032
BW		 80 /*
81 * Work around an anomaly: if we see a new DCPLB fault, return
82 * without doing anything. Then, if we get the same fault again,
83 * handle it.
84 */
f26fbc48 85 P4 = R7; /* Store EXCAUSE */
1394f032
BW		 86 p5.l = _last_cplb_fault_retx;
87 p5.h = _last_cplb_fault_retx;
88 r7 = [p5];
89 r6 = retx;
90 [p5] = r6;
91 cc = r6 == r7;
8d6c2420 92 if !cc jump _bfin_return_from_exception;
1394f032 93 /* fall through */
f26fbc48
RG		 94 R7 = P4;
95 R6 = 0x26; /* Data CPLB Miss */
96 cc = R6 == R7;
97 if cc jump _ex_dcplb_miss (BP);
98 /* Handle 0x23 Data CPLB Protection Violation
99 * and Data CPLB Multiple Hits - Linux Trap Zero
100 */
101 jump _ex_trap_c;
102ENDPROC(_ex_workaround_261)
103
104#else
105#define _ex_dviol _ex_trap_c
106#define _ex_dmiss _ex_dcplb_miss
107#define _ex_dmult _ex_trap_c
1394f032
BW		 108#endif
109
f26fbc48
RG		 110ENTRY(_ex_dcplb_miss)
111ENTRY(_ex_icplb_miss)
1394f032
BW		 112 (R7:6,P5:4) = [sp++];
113 ASTAT = [sp++];
114 SAVE_ALL_SYS
115 call __cplb_hdr;
669b792c 116 DEBUG_START_HWTRACE(p5, r7)
1394f032 117 RESTORE_ALL_SYS
f0b5d12f 118 SP = EX_SCRATCH_REG;
1394f032 119 rtx;
f26fbc48 120ENDPROC(_ex_icplb_miss)
1394f032 121
1394f032 122ENTRY(_ex_syscall)
669b792c 123 DEBUG_START_HWTRACE(p5, r7)
1394f032
BW		 124 (R7:6,P5:4) = [sp++];
125 ASTAT = [sp++];
126 raise 15; /* invoked by TRAP #0, for sys call */
f0b5d12f 127 sp = EX_SCRATCH_REG;
1394f032 128 rtx
51be24c3 129ENDPROC(_ex_syscall)
1394f032 130
1394f032
BW		 131ENTRY(_ex_soft_bp)
132 r7 = retx;
133 r7 += -2;
134 retx = r7;
135 jump.s _ex_trap_c;
51be24c3 136ENDPROC(_ex_soft_bp)
1394f032
BW		 137
138ENTRY(_ex_single_step)
139 r7 = retx;
140 r6 = reti;
141 cc = r7 == r6;
8d6c2420 142 if cc jump _bfin_return_from_exception
1394f032
BW		 143 r7 = syscfg;
144 bitclr (r7, 0);
145 syscfg = R7;
146
147 p5.l = lo(IPEND);
148 p5.h = hi(IPEND);
149 r6 = [p5];
150 cc = bittst(r6, 5);
151 if !cc jump _ex_trap_c;
152 p4.l = lo(EVT5);
153 p4.h = hi(EVT5);
154 r6.h = _exception_to_level5;
155 r6.l = _exception_to_level5;
156 r7 = [p4];
157 cc = r6 == r7;
158 if !cc jump _ex_trap_c;
159
8d6c2420 160ENTRY(_bfin_return_from_exception)
669b792c 161 DEBUG_START_HWTRACE(p5, r7)
1aafd909 162#if ANOMALY_05000257
8af10b79
MH		 163 R7=LC0;
164 LC0=R7;
165 R7=LC1;
166 LC1=R7;
167#endif
1394f032
BW		 168 (R7:6,P5:4) = [sp++];
169 ASTAT = [sp++];
f0b5d12f 170 sp = EX_SCRATCH_REG;
1394f032 171 rtx;
51be24c3 172ENDPROC(_ex_soft_bp)
1394f032
BW		 173
174ENTRY(_handle_bad_cplb)
175 /* To get here, we just tried and failed to change a CPLB
176 * so, handle things in trap_c (C code), by lowering to
177 * IRQ5, just like we normally do. Since this is not a
178 * "normal" return path, we have a do alot of stuff to
179 * the stack to get ready so, we can fall through - we
180 * need to make a CPLB exception look like a normal exception
181 */
182
669b792c 183 DEBUG_START_HWTRACE(p5, r7)
1394f032
BW		 184 RESTORE_ALL_SYS
185 [--sp] = ASTAT;
186 [--sp] = (R7:6, P5:4);
187
1ffe6646
MF		 188ENTRY(_ex_replaceable)
189 nop;
190
1394f032 191ENTRY(_ex_trap_c)
2ebcade5
RG		 192 /* Make sure we are not in a double fault */
193 p4.l = lo(IPEND);
194 p4.h = hi(IPEND);
195 r7 = [p4];
196 CC = BITTST (r7, 5);
197 if CC jump _double_fault;
198
1394f032
BW		 199 /* Call C code (trap_c) to handle the exception, which most
200 * likely involves sending a signal to the current process.
201 * To avoid double faults, lower our priority to IRQ5 first.
202 */
203 P5.h = _exception_to_level5;
204 P5.l = _exception_to_level5;
205 p4.l = lo(EVT5);
206 p4.h = hi(EVT5);
207 [p4] = p5;
208 csync;
209
210 /* Disable all interrupts, but make sure level 5 is enabled so
211 * we can switch to that level. Save the old mask. */
212 cli r6;
213 p4.l = _excpt_saved_imask;
214 p4.h = _excpt_saved_imask;
215 [p4] = r6;
216 r6 = 0x3f;
217 sti r6;
218
219 /* Save the excause into a circular buffer, in case the instruction
220 * which caused this excecptions causes others.
221 */
222 P5.l = _in_ptr_excause;
223 P5.h = _in_ptr_excause;
224 R7 = [P5];
225 R7 += 4;
226 R6 = 0xF;
227 R7 = R7 & R6;
228 [P5] = R7;
229 R6.l = _excause_circ_buf;
230 R6.h = _excause_circ_buf;
231 R7 = R7 + R6;
232 p5 = R7;
233 R6 = SEQSTAT;
234 [P5] = R6;
235
669b792c 236 DEBUG_START_HWTRACE(p5, r7)
1394f032
BW		 237 (R7:6,P5:4) = [sp++];
238 ASTAT = [sp++];
f0b5d12f 239 SP = EX_SCRATCH_REG;
1394f032
BW		 240 raise 5;
241 rtx;
51be24c3 242ENDPROC(_ex_trap_c)
1394f032 243
2ebcade5
RG		 244/* We just realized we got an exception, while we were processing a different
245 * exception. This is a unrecoverable event, so crash
246 */
247ENTRY(_double_fault)
248 /* Turn caches & protection off, to ensure we don't get any more
249 * double exceptions
250 */
251
252 P4.L = LO(IMEM_CONTROL);
253 P4.H = HI(IMEM_CONTROL);
254
255 R5 = [P4]; /* Control Register*/
256 BITCLR(R5,ENICPLB_P);
257 SSYNC; /* SSYNC required before writing to IMEM_CONTROL. */
258 .align 8;
259 [P4] = R5;
260 SSYNC;
261
262 P4.L = LO(DMEM_CONTROL);
263 P4.H = HI(DMEM_CONTROL);
264 R5 = [P4];
265 BITCLR(R5,ENDCPLB_P);
266 SSYNC; /* SSYNC required before writing to DMEM_CONTROL. */
267 .align 8;
268 [P4] = R5;
269 SSYNC;
270
271 /* Fix up the stack */
272 (R7:6,P5:4) = [sp++];
273 ASTAT = [sp++];
274 SP = EX_SCRATCH_REG;
275
276 /* We should be out of the exception stack, and back down into
277 * kernel or user space stack
278 */
279 SAVE_ALL_SYS
280
281 r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
282 SP += -12;
283 call _double_fault_c;
284 SP += 12;
285.L_double_fault_panic:
286 JUMP .L_double_fault_panic
287
288ENDPROC(_double_fault)
289
1394f032
BW		 290ENTRY(_exception_to_level5)
291 SAVE_ALL_SYS
292
293 /* Restore interrupt mask. We haven't pushed RETI, so this
294 * doesn't enable interrupts until we return from this handler. */
295 p4.l = _excpt_saved_imask;
296 p4.h = _excpt_saved_imask;
297 r6 = [p4];
298 sti r6;
299
300 /* Restore the hardware error vector. */
301 P5.h = _evt_ivhw;
302 P5.l = _evt_ivhw;
303 p4.l = lo(EVT5);
304 p4.h = hi(EVT5);
305 [p4] = p5;
306 csync;
307
308 p2.l = lo(IPEND);
309 p2.h = hi(IPEND);
310 csync;
311 r0 = [p2]; /* Read current IPEND */
312 [sp + PT_IPEND] = r0; /* Store IPEND */
313
314 /* Pop the excause from the circular buffer and push it on the stack
315 * (in the right place - if you change the location of SEQSTAT, you
316 * must change this offset.
317 */
318.L_excep_to_5_again:
319 P5.l = _out_ptr_excause;
320 P5.h = _out_ptr_excause;
321 R7 = [P5];
322 R7 += 4;
323 R6 = 0xF;
324 R7 = R7 & R6;
325 [P5] = R7;
326 R6.l = _excause_circ_buf;
327 R6.h = _excause_circ_buf;
328 R7 = R7 + R6;
329 P5 = R7;
330 R1 = [P5];
331 [SP + 8] = r1;
332
333 r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
334 SP += -12;
335 call _trap_c;
336 SP += 12;
337
338 /* See if anything else is in the exception buffer
339 * if there is, process it
340 */
341 P5.l = _out_ptr_excause;
342 P5.h = _out_ptr_excause;
343 P4.l = _in_ptr_excause;
344 P4.h = _in_ptr_excause;
345 R6 = [P5];
346 R7 = [P4];
347 CC = R6 == R7;
348 if ! CC JUMP .L_excep_to_5_again
349
350 call _ret_from_exception;
351 RESTORE_ALL_SYS
352 rti;
51be24c3 353ENDPROC(_exception_to_level5)
1394f032
BW		 354
355ENTRY(_trap) /* Exception: 4th entry into system event table(supervisor mode)*/
356 /* Since the kernel stack can be anywhere, it's not guaranteed to be
357 * covered by a CPLB. Switch to an exception stack; use RETN as a
358 * scratch register (for want of a better option).
359 */
f0b5d12f 360 EX_SCRATCH_REG = sp;
1394f032
BW		 361 sp.l = _exception_stack_top;
362 sp.h = _exception_stack_top;
363 /* Try to deal with syscalls quickly. */
364 [--sp] = ASTAT;
365 [--sp] = (R7:6, P5:4);
669b792c 366 DEBUG_STOP_HWTRACE(p5, r7)
1394f032
BW		 367 r7 = SEQSTAT; /* reason code is in bit 5:0 */
368 r6.l = lo(SEQSTAT_EXCAUSE);
369 r6.h = hi(SEQSTAT_EXCAUSE);
370 r7 = r7 & r6;
1ffe6646
MF		 371 p5.h = _ex_table;
372 p5.l = _ex_table;
1394f032
BW		 373 p4 = r7;
374 p5 = p5 + (p4 << 2);
375 p4 = [p5];
376 jump (p4);
377
378.Lbadsys:
379 r7 = -ENOSYS; /* signextending enough */
380 [sp + PT_R0] = r7; /* return value from system call */
381 jump .Lsyscall_really_exit;
51be24c3 382ENDPROC(_trap)
1394f032
BW		 383
384ENTRY(_kernel_execve)
385 link SIZEOF_PTREGS;
386 p0 = sp;
387 r3 = SIZEOF_PTREGS / 4;
388 r4 = 0(x);
3890:
390 [p0++] = r4;
391 r3 += -1;
392 cc = r3 == 0;
393 if !cc jump 0b (bp);
394
395 p0 = sp;
396 sp += -16;
397 [sp + 12] = p0;
398 call _do_execve;
399 SP += 16;
400 cc = r0 == 0;
401 if ! cc jump 1f;
402 /* Success. Copy our temporary pt_regs to the top of the kernel
403 * stack and do a normal exception return.
404 */
405 r1 = sp;
406 r0 = (-KERNEL_STACK_SIZE) (x);
407 r1 = r1 & r0;
408 p2 = r1;
409 p3 = [p2];
410 r0 = KERNEL_STACK_SIZE - 4 (z);
411 p1 = r0;
412 p1 = p1 + p2;
413
414 p0 = fp;
415 r4 = [p0--];
416 r3 = SIZEOF_PTREGS / 4;
4170:
418 r4 = [p0--];
419 [p1--] = r4;
420 r3 += -1;
421 cc = r3 == 0;
422 if ! cc jump 0b (bp);
423
424 r0 = (KERNEL_STACK_SIZE - SIZEOF_PTREGS) (z);
425 p1 = r0;
426 p1 = p1 + p2;
427 sp = p1;
428 r0 = syscfg;
429 [SP + PT_SYSCFG] = r0;
430 [p3 + (TASK_THREAD + THREAD_KSP)] = sp;
431
432 RESTORE_CONTEXT;
433 rti;
4341:
435 unlink;
436 rts;
51be24c3 437ENDPROC(_kernel_execve)
1394f032
BW		 438
439ENTRY(_system_call)
440 /* Store IPEND */
441 p2.l = lo(IPEND);
442 p2.h = hi(IPEND);
443 csync;
444 r0 = [p2];
445 [sp + PT_IPEND] = r0;
446
447 /* Store RETS for now */
448 r0 = rets;
449 [sp + PT_RESERVED] = r0;
450 /* Set the stack for the current process */
451 r7 = sp;
452 r6.l = lo(ALIGN_PAGE_MASK);
453 r6.h = hi(ALIGN_PAGE_MASK);
454 r7 = r7 & r6; /* thread_info */
455 p2 = r7;
456 p2 = [p2];
457
458 [p2+(TASK_THREAD+THREAD_KSP)] = sp;
459
460 /* Check the System Call */
461 r7 = __NR_syscall;
462 /* System call number is passed in P0 */
463 r6 = p0;
464 cc = r6 < r7;
465 if ! cc jump .Lbadsys;
466
467 /* are we tracing syscalls?*/
468 r7 = sp;
469 r6.l = lo(ALIGN_PAGE_MASK);
470 r6.h = hi(ALIGN_PAGE_MASK);
471 r7 = r7 & r6;
472 p2 = r7;
473 r7 = [p2+TI_FLAGS];
474 CC = BITTST(r7,TIF_SYSCALL_TRACE);
475 if CC JUMP _sys_trace;
476
477 /* Execute the appropriate system call */
478
479 p4 = p0;
480 p5.l = _sys_call_table;
481 p5.h = _sys_call_table;
482 p5 = p5 + (p4 << 2);
483 r0 = [sp + PT_R0];
484 r1 = [sp + PT_R1];
485 r2 = [sp + PT_R2];
486 p5 = [p5];
487
488 [--sp] = r5;
489 [--sp] = r4;
490 [--sp] = r3;
491 SP += -12;
492 call (p5);
493 SP += 24;
494 [sp + PT_R0] = r0;
495
496.Lresume_userspace:
497 r7 = sp;
498 r4.l = lo(ALIGN_PAGE_MASK);
499 r4.h = hi(ALIGN_PAGE_MASK);
500 r7 = r7 & r4; /* thread_info->flags */
501 p5 = r7;
502.Lresume_userspace_1:
503 /* Disable interrupts. */
504 [--sp] = reti;
505 reti = [sp++];
506
507 r7 = [p5 + TI_FLAGS];
508 r4.l = lo(_TIF_WORK_MASK);
509 r4.h = hi(_TIF_WORK_MASK);
510 r7 = r7 & r4;
511
512.Lsyscall_resched:
513 cc = BITTST(r7, TIF_NEED_RESCHED);
514 if !cc jump .Lsyscall_sigpending;
515
516 /* Reenable interrupts. */
517 [--sp] = reti;
518 r0 = [sp++];
519
520 SP += -12;
521 call _schedule;
522 SP += 12;
523
524 jump .Lresume_userspace_1;
525
526.Lsyscall_sigpending:
527 cc = BITTST(r7, TIF_RESTORE_SIGMASK);
528 if cc jump .Lsyscall_do_signals;
529 cc = BITTST(r7, TIF_SIGPENDING);
530 if !cc jump .Lsyscall_really_exit;
531.Lsyscall_do_signals:
532 /* Reenable interrupts. */
533 [--sp] = reti;
534 r0 = [sp++];
535
536 r0 = sp;
537 SP += -12;
538 call _do_signal;
539 SP += 12;
540
541.Lsyscall_really_exit:
542 r5 = [sp + PT_RESERVED];
543 rets = r5;
544 rts;
51be24c3 545ENDPROC(_system_call)
1394f032
BW		 546
547_sys_trace:
548 call _syscall_trace;
549
550 /* Execute the appropriate system call */
551
552 p4 = [SP + PT_P0];
553 p5.l = _sys_call_table;
554 p5.h = _sys_call_table;
555 p5 = p5 + (p4 << 2);
556 r0 = [sp + PT_R0];
557 r1 = [sp + PT_R1];
558 r2 = [sp + PT_R2];
559 r3 = [sp + PT_R3];
560 r4 = [sp + PT_R4];
561 r5 = [sp + PT_R5];
562 p5 = [p5];
563
564 [--sp] = r5;
565 [--sp] = r4;
566 [--sp] = r3;
567 SP += -12;
568 call (p5);
569 SP += 24;
570 [sp + PT_R0] = r0;
571
572 call _syscall_trace;
573 jump .Lresume_userspace;
51be24c3 574ENDPROC(_sys_trace)
1394f032
BW		 575
576ENTRY(_resume)
577 /*
578 * Beware - when entering resume, prev (the current task) is
579 * in r0, next (the new task) is in r1.
580 */
581 p0 = r0;
582 p1 = r1;
583 [--sp] = rets;
584 [--sp] = fp;
585 [--sp] = (r7:4, p5:3);
586
587 /* save usp */
588 p2 = usp;
589 [p0+(TASK_THREAD+THREAD_USP)] = p2;
590
591 /* save current kernel stack pointer */
592 [p0+(TASK_THREAD+THREAD_KSP)] = sp;
593
594 /* save program counter */
595 r1.l = _new_old_task;
596 r1.h = _new_old_task;
597 [p0+(TASK_THREAD+THREAD_PC)] = r1;
598
599 /* restore the kernel stack pointer */
600 sp = [p1+(TASK_THREAD+THREAD_KSP)];
601
602 /* restore user stack pointer */
603 p0 = [p1+(TASK_THREAD+THREAD_USP)];
604 usp = p0;
605
606 /* restore pc */
607 p0 = [p1+(TASK_THREAD+THREAD_PC)];
608 jump (p0);
609
610 /*
611 * Following code actually lands up in a new (old) task.
612 */
613
614_new_old_task:
615 (r7:4, p5:3) = [sp++];
616 fp = [sp++];
617 rets = [sp++];
618
619 /*
620 * When we come out of resume, r0 carries "old" task, becuase we are
621 * in "new" task.
622 */
623 rts;
51be24c3 624ENDPROC(_resume)
1394f032
BW		 625
626ENTRY(_ret_from_exception)
627 p2.l = lo(IPEND);
628 p2.h = hi(IPEND);
629
630 csync;
631 r0 = [p2];
632 [sp + PT_IPEND] = r0;
633
6341:
635 r1 = 0x37(Z);
636 r2 = ~r1;
637 r2.h = 0;
638 r0 = r2 & r0;
639 cc = r0 == 0;
640 if !cc jump 4f; /* if not return to user mode, get out */
641
642 /* Make sure any pending system call or deferred exception
643 * return in ILAT for this process to get executed, otherwise
644 * in case context switch happens, system call of
645 * first process (i.e in ILAT) will be carried
646 * forward to the switched process
647 */
648
649 p2.l = lo(ILAT);
650 p2.h = hi(ILAT);
651 r0 = [p2];
652 r1 = (EVT_IVG14 | EVT_IVG15) (z);
653 r0 = r0 & r1;
654 cc = r0 == 0;
655 if !cc jump 5f;
656
657 /* Set the stack for the current process */
658 r7 = sp;
659 r4.l = lo(ALIGN_PAGE_MASK);
660 r4.h = hi(ALIGN_PAGE_MASK);
661 r7 = r7 & r4; /* thread_info->flags */
662 p5 = r7;
663 r7 = [p5 + TI_FLAGS];
664 r4.l = lo(_TIF_WORK_MASK);
665 r4.h = hi(_TIF_WORK_MASK);
666 r7 = r7 & r4;
667 cc = r7 == 0;
668 if cc jump 4f;
669
670 p0.l = lo(EVT15);
671 p0.h = hi(EVT15);
672 p1.l = _schedule_and_signal;
673 p1.h = _schedule_and_signal;
674 [p0] = p1;
675 csync;
676 raise 15; /* raise evt14 to do signal or reschedule */
6774:
678 r0 = syscfg;
679 bitclr(r0, 0);
680 syscfg = r0;
6815:
682 rts;
51be24c3 683ENDPROC(_ret_from_exception)
1394f032
BW		 684
685ENTRY(_return_from_int)
686 /* If someone else already raised IRQ 15, do nothing. */
687 csync;
688 p2.l = lo(ILAT);
689 p2.h = hi(ILAT);
690 r0 = [p2];
691 cc = bittst (r0, EVT_IVG15_P);
692 if cc jump 2f;
693
694 /* if not return to user mode, get out */
695 p2.l = lo(IPEND);
696 p2.h = hi(IPEND);
697 r0 = [p2];
698 r1 = 0x17(Z);
699 r2 = ~r1;
700 r2.h = 0;
701 r0 = r2 & r0;
702 r1 = 1;
703 r1 = r0 - r1;
704 r2 = r0 & r1;
705 cc = r2 == 0;
706 if !cc jump 2f;
707
708 /* Lower the interrupt level to 15. */
709 p0.l = lo(EVT15);
710 p0.h = hi(EVT15);
711 p1.l = _schedule_and_signal_from_int;
712 p1.h = _schedule_and_signal_from_int;
713 [p0] = p1;
714 csync;
1aafd909 715#if ANOMALY_05000281
b3f8b927
RG		 716 r0.l = _safe_speculative_execution;
717 r0.h = _safe_speculative_execution;
1394f032
BW		 718 reti = r0;
719#endif
720 r0 = 0x801f (z);
721 STI r0;
722 raise 15; /* raise evt15 to do signal or reschedule */
723 rti;
7242:
725 rts;
51be24c3 726ENDPROC(_return_from_int)
1394f032
BW		 727
728ENTRY(_lower_to_irq14)
1aafd909 729#if ANOMALY_05000281
b3f8b927
RG		 730 r0.l = _safe_speculative_execution;
731 r0.h = _safe_speculative_execution;
1394f032
BW		 732 reti = r0;
733#endif
734 r0 = 0x401f;
735 sti r0;
736 raise 14;
737 rti;
738ENTRY(_evt14_softirq)
739#ifdef CONFIG_DEBUG_HWERR
740 r0 = 0x3f;
741 sti r0;
742#else
743 cli r0;
744#endif
745 [--sp] = RETI;
746 SP += 4;
747 rts;
748
749_schedule_and_signal_from_int:
750 /* To end up here, vector 15 was changed - so we have to change it
751 * back.
752 */
753 p0.l = lo(EVT15);
754 p0.h = hi(EVT15);
755 p1.l = _evt_system_call;
756 p1.h = _evt_system_call;
757 [p0] = p1;
758 csync;
c824498d
BS		 759
760 /* Set orig_p0 to -1 to indicate this isn't the end of a syscall. */
761 r0 = -1 (x);
762 [sp + PT_ORIG_P0] = r0;
763
1394f032
BW		 764 p1 = rets;
765 [sp + PT_RESERVED] = p1;
766
767 p0.l = _irq_flags;
768 p0.h = _irq_flags;
769 r0 = [p0];
770 sti r0;
771
7adfb58f
BS		 772 r0 = sp;
773 sp += -12;
774 call _finish_atomic_sections;
775 sp += 12;
1394f032
BW		 776 jump.s .Lresume_userspace;
777
778_schedule_and_signal:
779 SAVE_CONTEXT_SYSCALL
780 /* To end up here, vector 15 was changed - so we have to change it
781 * back.
782 */
783 p0.l = lo(EVT15);
784 p0.h = hi(EVT15);
785 p1.l = _evt_system_call;
786 p1.h = _evt_system_call;
787 [p0] = p1;
788 csync;
789 p0.l = 1f;
790 p0.h = 1f;
791 [sp + PT_RESERVED] = P0;
792 call .Lresume_userspace;
7931:
794 RESTORE_CONTEXT
795 rti;
51be24c3 796ENDPROC(_lower_to_irq14)
1394f032
BW		 797
798/* Make sure when we start, that the circular buffer is initialized properly
799 * R0 and P0 are call clobbered, so we can use them here.
800 */
801ENTRY(_init_exception_buff)
802 r0 = 0;
803 p0.h = _in_ptr_excause;
804 p0.l = _in_ptr_excause;
805 [p0] = r0;
806 p0.h = _out_ptr_excause;
807 p0.l = _out_ptr_excause;
808 [p0] = r0;
809 rts;
51be24c3 810ENDPROC(_init_exception_buff)
1394f032 811
518039bc
RG		 812/* We handle this 100% in exception space - to reduce overhead
813 * Only potiential problem is if the software buffer gets swapped out of the
814 * CPLB table - then double fault. - so we don't let this happen in other places
815 */
816#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
817ENTRY(_ex_trace_buff_full)
818 [--sp] = P3;
819 [--sp] = P2;
820 [--sp] = LC0;
821 [--sp] = LT0;
822 [--sp] = LB0;
823 P5.L = _trace_buff_offset;
824 P5.H = _trace_buff_offset;
825 P3 = [P5]; /* trace_buff_offset */
826 P5.L = lo(TBUFSTAT);
827 P5.H = hi(TBUFSTAT);
828 R7 = [P5];
829 R7 <<= 1; /* double, since we need to read twice */
830 LC0 = R7;
831 R7 <<= 2; /* need to shift over again,
832 * to get the number of bytes */
833 P5.L = lo(TBUF);
834 P5.H = hi(TBUF);
835 R6 = ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN)*1024) - 1;
836
837 P2 = R7;
838 P3 = P3 + P2;
839 R7 = P3;
840 R7 = R7 & R6;
841 P3 = R7;
842 P2.L = _trace_buff_offset;
843 P2.H = _trace_buff_offset;
844 [P2] = P3;
845
846 P2.L = _software_trace_buff;
847 P2.H = _software_trace_buff;
848
849 LSETUP (.Lstart, .Lend) LC0;
850.Lstart:
851 R7 = [P5]; /* read TBUF */
852 P4 = P3 + P2;
853 [P4] = R7;
854 P3 += -4;
855 R7 = P3;
856 R7 = R7 & R6;
857.Lend:
858 P3 = R7;
859
860 LB0 = [sp++];
861 LT0 = [sp++];
862 LC0 = [sp++];
863 P2 = [sp++];
864 P3 = [sp++];
8d6c2420 865 jump _bfin_return_from_exception;
337d390b 866ENDPROC(_ex_trace_buff_full)
518039bc
RG		 867
868#if CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN == 4
869.data
870#else
871.section .l1.data.B
337d390b 872#endif /* CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN */
518039bc
RG		 873ENTRY(_trace_buff_offset)
874 .long 0;
875ALIGN
876ENTRY(_software_trace_buff)
877 .rept ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN)*256);
878 .long 0
879 .endr
337d390b
RG		 880#endif /* CONFIG_DEBUG_BFIN_HWTRACE_EXPAND */
881
882#if CONFIG_EARLY_PRINTK
883.section .init.text
884ENTRY(_early_trap)
885 SAVE_ALL_SYS
886 trace_buffer_stop(p0,r0);
887
888 /* Turn caches off, to ensure we don't get double exceptions */
889
890 P4.L = LO(IMEM_CONTROL);
891 P4.H = HI(IMEM_CONTROL);
892
893 R5 = [P4]; /* Control Register*/
894 BITCLR(R5,ENICPLB_P);
895 CLI R1;
896 SSYNC; /* SSYNC required before writing to IMEM_CONTROL. */
897 .align 8;
898 [P4] = R5;
899 SSYNC;
900
901 P4.L = LO(DMEM_CONTROL);
902 P4.H = HI(DMEM_CONTROL);
903 R5 = [P4];
904 BITCLR(R5,ENDCPLB_P);
905 SSYNC; /* SSYNC required before writing to DMEM_CONTROL. */
906 .align 8;
907 [P4] = R5;
908 SSYNC;
909 STI R1;
910
911 r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
912 r1 = RETX;
913
914 SP += -12;
915 call _early_trap_c;
916 SP += 12;
917ENDPROC(_early_trap)
918#endif /* CONFIG_EARLY_PRINTK */
518039bc 919
1394f032
BW		 920/*
921 * Put these in the kernel data section - that should always be covered by
922 * a CPLB. This is needed to ensure we don't get double fault conditions
923 */
924
925#ifdef CONFIG_SYSCALL_TAB_L1
926.section .l1.data
927#else
928.data
929#endif
f26fbc48 930
1ffe6646 931ENTRY(_ex_table)
1394f032 932 /* entry for each EXCAUSE[5:0]
9401e618 933 * This table must be in sync with the table in ./kernel/traps.c
1394f032
BW		 934 * EXCPT instruction can provide 4 bits of EXCAUSE, allowing 16 to be user defined
935 */
1ffe6646 936 .long _ex_syscall /* 0x00 - User Defined - Linux Syscall */
1394f032 937 .long _ex_soft_bp /* 0x01 - User Defined - Software breakpoint */
1ffe6646 938 .long _ex_replaceable /* 0x02 - User Defined */
9401e618 939 .long _ex_trap_c /* 0x03 - User Defined - userspace stack overflow */
9f336a53 940 .long _ex_trap_c /* 0x04 - User Defined - dump trace buffer */
1ffe6646
MF		 941 .long _ex_replaceable /* 0x05 - User Defined */
942 .long _ex_replaceable /* 0x06 - User Defined */
943 .long _ex_replaceable /* 0x07 - User Defined */
944 .long _ex_replaceable /* 0x08 - User Defined */
945 .long _ex_replaceable /* 0x09 - User Defined */
946 .long _ex_replaceable /* 0x0A - User Defined */
947 .long _ex_replaceable /* 0x0B - User Defined */
948 .long _ex_replaceable /* 0x0C - User Defined */
949 .long _ex_replaceable /* 0x0D - User Defined */
950 .long _ex_replaceable /* 0x0E - User Defined */
951 .long _ex_replaceable /* 0x0F - User Defined */
1394f032 952 .long _ex_single_step /* 0x10 - HW Single step */
518039bc
RG		 953#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
954 .long _ex_trace_buff_full /* 0x11 - Trace Buffer Full */
955#else
1394f032 956 .long _ex_trap_c /* 0x11 - Trace Buffer Full */
518039bc 957#endif
1394f032
BW		 958 .long _ex_trap_c /* 0x12 - Reserved */
959 .long _ex_trap_c /* 0x13 - Reserved */
960 .long _ex_trap_c /* 0x14 - Reserved */
961 .long _ex_trap_c /* 0x15 - Reserved */
962 .long _ex_trap_c /* 0x16 - Reserved */
963 .long _ex_trap_c /* 0x17 - Reserved */
964 .long _ex_trap_c /* 0x18 - Reserved */
965 .long _ex_trap_c /* 0x19 - Reserved */
966 .long _ex_trap_c /* 0x1A - Reserved */
967 .long _ex_trap_c /* 0x1B - Reserved */
968 .long _ex_trap_c /* 0x1C - Reserved */
969 .long _ex_trap_c /* 0x1D - Reserved */
970 .long _ex_trap_c /* 0x1E - Reserved */
971 .long _ex_trap_c /* 0x1F - Reserved */
972 .long _ex_trap_c /* 0x20 - Reserved */
973 .long _ex_trap_c /* 0x21 - Undefined Instruction */
974 .long _ex_trap_c /* 0x22 - Illegal Instruction Combination */
f26fbc48 975 .long _ex_dviol /* 0x23 - Data CPLB Protection Violation */
1394f032
BW		 976 .long _ex_trap_c /* 0x24 - Data access misaligned */
977 .long _ex_trap_c /* 0x25 - Unrecoverable Event */
f26fbc48
RG		 978 .long _ex_dmiss /* 0x26 - Data CPLB Miss */
979 .long _ex_dmult /* 0x27 - Data CPLB Multiple Hits - Linux Trap Zero */
1394f032
BW		 980 .long _ex_trap_c /* 0x28 - Emulation Watchpoint */
981 .long _ex_trap_c /* 0x29 - Instruction fetch access error (535 only) */
982 .long _ex_trap_c /* 0x2A - Instruction fetch misaligned */
f26fbc48
RG		 983 .long _ex_trap_c /* 0x2B - Instruction CPLB protection Violation */
984 .long _ex_icplb_miss /* 0x2C - Instruction CPLB miss */
1394f032
BW		 985 .long _ex_trap_c /* 0x2D - Instruction CPLB Multiple Hits */
986 .long _ex_trap_c /* 0x2E - Illegal use of Supervisor Resource */
987 .long _ex_trap_c /* 0x2E - Illegal use of Supervisor Resource */
988 .long _ex_trap_c /* 0x2F - Reserved */
989 .long _ex_trap_c /* 0x30 - Reserved */
990 .long _ex_trap_c /* 0x31 - Reserved */
991 .long _ex_trap_c /* 0x32 - Reserved */
992 .long _ex_trap_c /* 0x33 - Reserved */
993 .long _ex_trap_c /* 0x34 - Reserved */
994 .long _ex_trap_c /* 0x35 - Reserved */
995 .long _ex_trap_c /* 0x36 - Reserved */
996 .long _ex_trap_c /* 0x37 - Reserved */
997 .long _ex_trap_c /* 0x38 - Reserved */
998 .long _ex_trap_c /* 0x39 - Reserved */
999 .long _ex_trap_c /* 0x3A - Reserved */
1000 .long _ex_trap_c /* 0x3B - Reserved */
1001 .long _ex_trap_c /* 0x3C - Reserved */
1002 .long _ex_trap_c /* 0x3D - Reserved */
1003 .long _ex_trap_c /* 0x3E - Reserved */
1004 .long _ex_trap_c /* 0x3F - Reserved */
1ffe6646 1005END(_ex_table)
1394f032 1006
1394f032 1007ENTRY(_sys_call_table)
0b95f22b 1008 .long _sys_restart_syscall /* 0 */
1394f032
BW		 1009 .long _sys_exit
1010 .long _sys_fork
1011 .long _sys_read
1012 .long _sys_write
1013 .long _sys_open /* 5 */
1014 .long _sys_close
1015 .long _sys_ni_syscall /* old waitpid */
1016 .long _sys_creat
1017 .long _sys_link
1018 .long _sys_unlink /* 10 */
1019 .long _sys_execve
1020 .long _sys_chdir
1021 .long _sys_time
1022 .long _sys_mknod
1023 .long _sys_chmod /* 15 */
1024 .long _sys_chown /* chown16 */
1025 .long _sys_ni_syscall /* old break syscall holder */
1026 .long _sys_ni_syscall /* old stat */
1027 .long _sys_lseek
1028 .long _sys_getpid /* 20 */
1029 .long _sys_mount
1030 .long _sys_ni_syscall /* old umount */
1031 .long _sys_setuid
1032 .long _sys_getuid
1033 .long _sys_stime /* 25 */
1034 .long _sys_ptrace
1035 .long _sys_alarm
1036 .long _sys_ni_syscall /* old fstat */
1037 .long _sys_pause
1038 .long _sys_ni_syscall /* old utime */ /* 30 */
1039 .long _sys_ni_syscall /* old stty syscall holder */
1040 .long _sys_ni_syscall /* old gtty syscall holder */
1041 .long _sys_access
1042 .long _sys_nice
1043 .long _sys_ni_syscall /* 35 */ /* old ftime syscall holder */
1044 .long _sys_sync
1045 .long _sys_kill
1046 .long _sys_rename
1047 .long _sys_mkdir
1048 .long _sys_rmdir /* 40 */
1049 .long _sys_dup
1050 .long _sys_pipe
1051 .long _sys_times
1052 .long _sys_ni_syscall /* old prof syscall holder */
1053 .long _sys_brk /* 45 */
1054 .long _sys_setgid
1055 .long _sys_getgid
1056 .long _sys_ni_syscall /* old sys_signal */
1057 .long _sys_geteuid /* geteuid16 */
1058 .long _sys_getegid /* getegid16 */ /* 50 */
1059 .long _sys_acct
1060 .long _sys_umount /* recycled never used phys() */
1061 .long _sys_ni_syscall /* old lock syscall holder */
1062 .long _sys_ioctl
1063 .long _sys_fcntl /* 55 */
1064 .long _sys_ni_syscall /* old mpx syscall holder */
1065 .long _sys_setpgid
1066 .long _sys_ni_syscall /* old ulimit syscall holder */
1067 .long _sys_ni_syscall /* old old uname */
1068 .long _sys_umask /* 60 */
1069 .long _sys_chroot
1070 .long _sys_ustat
1071 .long _sys_dup2
1072 .long _sys_getppid
1073 .long _sys_getpgrp /* 65 */
1074 .long _sys_setsid
1075 .long _sys_ni_syscall /* old sys_sigaction */
1076 .long _sys_sgetmask
1077 .long _sys_ssetmask
1078 .long _sys_setreuid /* setreuid16 */ /* 70 */
1079 .long _sys_setregid /* setregid16 */
1080 .long _sys_ni_syscall /* old sys_sigsuspend */
1081 .long _sys_ni_syscall /* old sys_sigpending */
1082 .long _sys_sethostname
1083 .long _sys_setrlimit /* 75 */
1084 .long _sys_ni_syscall /* old getrlimit */
1085 .long _sys_getrusage
1086 .long _sys_gettimeofday
1087 .long _sys_settimeofday
1088 .long _sys_getgroups /* getgroups16 */ /* 80 */
1089 .long _sys_setgroups /* setgroups16 */
1090 .long _sys_ni_syscall /* old_select */
1091 .long _sys_symlink
1092 .long _sys_ni_syscall /* old lstat */
1093 .long _sys_readlink /* 85 */
1094 .long _sys_uselib
1095 .long _sys_ni_syscall /* sys_swapon */
1096 .long _sys_reboot
1097 .long _sys_ni_syscall /* old_readdir */
1098 .long _sys_ni_syscall /* sys_mmap */ /* 90 */
1099 .long _sys_munmap
1100 .long _sys_truncate
1101 .long _sys_ftruncate
1102 .long _sys_fchmod
1103 .long _sys_fchown /* fchown16 */ /* 95 */
1104 .long _sys_getpriority
1105 .long _sys_setpriority
1106 .long _sys_ni_syscall /* old profil syscall holder */
1107 .long _sys_statfs
1108 .long _sys_fstatfs /* 100 */
1109 .long _sys_ni_syscall
1110 .long _sys_ni_syscall /* old sys_socketcall */
1111 .long _sys_syslog
1112 .long _sys_setitimer
1113 .long _sys_getitimer /* 105 */
1114 .long _sys_newstat
1115 .long _sys_newlstat
1116 .long _sys_newfstat
1117 .long _sys_ni_syscall /* old uname */
1118 .long _sys_ni_syscall /* iopl for i386 */ /* 110 */
1119 .long _sys_vhangup
1120 .long _sys_ni_syscall /* obsolete idle() syscall */
1121 .long _sys_ni_syscall /* vm86old for i386 */
1122 .long _sys_wait4
1123 .long _sys_ni_syscall /* 115 */ /* sys_swapoff */
1124 .long _sys_sysinfo
1125 .long _sys_ni_syscall /* old sys_ipc */
1126 .long _sys_fsync
1127 .long _sys_ni_syscall /* old sys_sigreturn */
1128 .long _sys_clone /* 120 */
1129 .long _sys_setdomainname
1130 .long _sys_newuname
1131 .long _sys_ni_syscall /* old sys_modify_ldt */
1132 .long _sys_adjtimex
1133 .long _sys_ni_syscall /* 125 */ /* sys_mprotect */
1134 .long _sys_ni_syscall /* old sys_sigprocmask */
1135 .long _sys_ni_syscall /* old "creat_module" */
1136 .long _sys_init_module
1137 .long _sys_delete_module
1138 .long _sys_ni_syscall /* 130: old "get_kernel_syms" */
1139 .long _sys_quotactl
1140 .long _sys_getpgid
1141 .long _sys_fchdir
1142 .long _sys_bdflush
1143 .long _sys_ni_syscall /* 135 */ /* sys_sysfs */
1144 .long _sys_personality
1145 .long _sys_ni_syscall /* for afs_syscall */
1146 .long _sys_setfsuid /* setfsuid16 */
1147 .long _sys_setfsgid /* setfsgid16 */
1148 .long _sys_llseek /* 140 */
1149 .long _sys_getdents
1150 .long _sys_ni_syscall /* sys_select */
1151 .long _sys_flock
1152 .long _sys_ni_syscall /* sys_msync */
1153 .long _sys_readv /* 145 */
1154 .long _sys_writev
1155 .long _sys_getsid
1156 .long _sys_fdatasync
1157 .long _sys_sysctl
1158 .long _sys_ni_syscall /* 150 */ /* sys_mlock */
1159 .long _sys_ni_syscall /* sys_munlock */
1160 .long _sys_ni_syscall /* sys_mlockall */
1161 .long _sys_ni_syscall /* sys_munlockall */
1162 .long _sys_sched_setparam
1163 .long _sys_sched_getparam /* 155 */
1164 .long _sys_sched_setscheduler
1165 .long _sys_sched_getscheduler
1166 .long _sys_sched_yield
1167 .long _sys_sched_get_priority_max
1168 .long _sys_sched_get_priority_min /* 160 */
1169 .long _sys_sched_rr_get_interval
1170 .long _sys_nanosleep
0b95f22b 1171 .long _sys_mremap
1394f032
BW		 1172 .long _sys_setresuid /* setresuid16 */
1173 .long _sys_getresuid /* getresuid16 */ /* 165 */
1174 .long _sys_ni_syscall /* for vm86 */
1175 .long _sys_ni_syscall /* old "query_module" */
1176 .long _sys_ni_syscall /* sys_poll */
0b95f22b 1177 .long _sys_nfsservctl
1394f032
BW		 1178 .long _sys_setresgid /* setresgid16 */ /* 170 */
1179 .long _sys_getresgid /* getresgid16 */
1180 .long _sys_prctl
1181 .long _sys_rt_sigreturn
1182 .long _sys_rt_sigaction
1183 .long _sys_rt_sigprocmask /* 175 */
1184 .long _sys_rt_sigpending
1185 .long _sys_rt_sigtimedwait
1186 .long _sys_rt_sigqueueinfo
1187 .long _sys_rt_sigsuspend
1188 .long _sys_pread64 /* 180 */
1189 .long _sys_pwrite64
1190 .long _sys_lchown /* lchown16 */
1191 .long _sys_getcwd
1192 .long _sys_capget
1193 .long _sys_capset /* 185 */
1194 .long _sys_sigaltstack
1195 .long _sys_sendfile
1196 .long _sys_ni_syscall /* streams1 */
1197 .long _sys_ni_syscall /* streams2 */
1198 .long _sys_vfork /* 190 */
1199 .long _sys_getrlimit
1200 .long _sys_mmap2
1201 .long _sys_truncate64
1202 .long _sys_ftruncate64
1203 .long _sys_stat64 /* 195 */
1204 .long _sys_lstat64
1205 .long _sys_fstat64
1206 .long _sys_chown
1207 .long _sys_getuid
1208 .long _sys_getgid /* 200 */
1209 .long _sys_geteuid
1210 .long _sys_getegid
1211 .long _sys_setreuid
1212 .long _sys_setregid
1213 .long _sys_getgroups /* 205 */
1214 .long _sys_setgroups
1215 .long _sys_fchown
1216 .long _sys_setresuid
1217 .long _sys_getresuid
1218 .long _sys_setresgid /* 210 */
1219 .long _sys_getresgid
1220 .long _sys_lchown
1221 .long _sys_setuid
1222 .long _sys_setgid
1223 .long _sys_setfsuid /* 215 */
1224 .long _sys_setfsgid
1225 .long _sys_pivot_root
1226 .long _sys_ni_syscall /* sys_mincore */
1227 .long _sys_ni_syscall /* sys_madvise */
1228 .long _sys_getdents64 /* 220 */
1229 .long _sys_fcntl64
1230 .long _sys_ni_syscall /* reserved for TUX */
1231 .long _sys_ni_syscall
1232 .long _sys_gettid
0b95f22b 1233 .long _sys_readahead /* 225 */
1394f032
BW		 1234 .long _sys_setxattr
1235 .long _sys_lsetxattr
1236 .long _sys_fsetxattr
1237 .long _sys_getxattr
1238 .long _sys_lgetxattr /* 230 */
1239 .long _sys_fgetxattr
1240 .long _sys_listxattr
1241 .long _sys_llistxattr
1242 .long _sys_flistxattr
1243 .long _sys_removexattr /* 235 */
1244 .long _sys_lremovexattr
1245 .long _sys_fremovexattr
1246 .long _sys_tkill
1247 .long _sys_sendfile64
1248 .long _sys_futex /* 240 */
1249 .long _sys_sched_setaffinity
1250 .long _sys_sched_getaffinity
1251 .long _sys_ni_syscall /* sys_set_thread_area */
1252 .long _sys_ni_syscall /* sys_get_thread_area */
1253 .long _sys_io_setup /* 245 */
1254 .long _sys_io_destroy
1255 .long _sys_io_getevents
1256 .long _sys_io_submit
1257 .long _sys_io_cancel
1258 .long _sys_ni_syscall /* 250 */ /* sys_alloc_hugepages */
1259 .long _sys_ni_syscall /* sys_freec_hugepages */
1260 .long _sys_exit_group
1261 .long _sys_lookup_dcookie
1262 .long _sys_bfin_spinlock
1263 .long _sys_epoll_create /* 255 */
1264 .long _sys_epoll_ctl
1265 .long _sys_epoll_wait
1266 .long _sys_ni_syscall /* remap_file_pages */
1267 .long _sys_set_tid_address
1268 .long _sys_timer_create /* 260 */
1269 .long _sys_timer_settime
1270 .long _sys_timer_gettime
1271 .long _sys_timer_getoverrun
1272 .long _sys_timer_delete
1273 .long _sys_clock_settime /* 265 */
1274 .long _sys_clock_gettime
1275 .long _sys_clock_getres
1276 .long _sys_clock_nanosleep
1277 .long _sys_statfs64
1278 .long _sys_fstatfs64 /* 270 */
1279 .long _sys_tgkill
1280 .long _sys_utimes
1281 .long _sys_fadvise64_64
1282 .long _sys_ni_syscall /* vserver */
1283 .long _sys_ni_syscall /* 275, mbind */
1284 .long _sys_ni_syscall /* get_mempolicy */
1285 .long _sys_ni_syscall /* set_mempolicy */
1286 .long _sys_mq_open
1287 .long _sys_mq_unlink
1288 .long _sys_mq_timedsend /* 280 */
1289 .long _sys_mq_timedreceive
1290 .long _sys_mq_notify
1291 .long _sys_mq_getsetattr
1292 .long _sys_ni_syscall /* kexec_load */
1293 .long _sys_waitid /* 285 */
1294 .long _sys_add_key
1295 .long _sys_request_key
1296 .long _sys_keyctl
1297 .long _sys_ioprio_set
1298 .long _sys_ioprio_get /* 290 */
1299 .long _sys_inotify_init
1300 .long _sys_inotify_add_watch
1301 .long _sys_inotify_rm_watch
1302 .long _sys_ni_syscall /* migrate_pages */
1303 .long _sys_openat /* 295 */
1304 .long _sys_mkdirat
1305 .long _sys_mknodat
1306 .long _sys_fchownat
1307 .long _sys_futimesat
1308 .long _sys_fstatat64 /* 300 */
1309 .long _sys_unlinkat
1310 .long _sys_renameat
1311 .long _sys_linkat
1312 .long _sys_symlinkat
1313 .long _sys_readlinkat /* 305 */
1314 .long _sys_fchmodat
1315 .long _sys_faccessat
1316 .long _sys_pselect6
1317 .long _sys_ppoll
1318 .long _sys_unshare /* 310 */
1319 .long _sys_sram_alloc
1320 .long _sys_sram_free
1321 .long _sys_dma_memcpy
1322 .long _sys_accept
1323 .long _sys_bind /* 315 */
1324 .long _sys_connect
1325 .long _sys_getpeername
1326 .long _sys_getsockname
1327 .long _sys_getsockopt
1328 .long _sys_listen /* 320 */
1329 .long _sys_recv
1330 .long _sys_recvfrom
1331 .long _sys_recvmsg
1332 .long _sys_send
1333 .long _sys_sendmsg /* 325 */
1334 .long _sys_sendto
1335 .long _sys_setsockopt
1336 .long _sys_shutdown
1337 .long _sys_socket
1338 .long _sys_socketpair /* 330 */
1339 .long _sys_semctl
1340 .long _sys_semget
1341 .long _sys_semop
1342 .long _sys_msgctl
1343 .long _sys_msgget /* 335 */
1344 .long _sys_msgrcv
1345 .long _sys_msgsnd
1346 .long _sys_shmat
1347 .long _sys_shmctl
1348 .long _sys_shmdt /* 340 */
1349 .long _sys_shmget
0b95f22b
BW		 1350 .long _sys_splice
1351 .long _sys_sync_file_range
1352 .long _sys_tee
1353 .long _sys_vmsplice /* 345 */
1354 .long _sys_epoll_pwait
1355 .long _sys_utimensat
1356 .long _sys_signalfd
1357 .long _sys_timerfd
1358 .long _sys_eventfd /* 350 */
1359 .long _sys_pread64
1360 .long _sys_pwrite64
1361 .long _sys_fadvise64
1362 .long _sys_set_robust_list
1363 .long _sys_get_robust_list /* 355 */
1364 .long _sys_fallocate
1394f032
BW		 1365 .rept NR_syscalls-(.-_sys_call_table)/4
1366 .long _sys_ni_syscall
1367 .endr
1368_excpt_saved_imask:
1369 .long 0;
1370
1371_exception_stack:
1372 .rept 1024
1373 .long 0;
1374 .endr
1375_exception_stack_top:
1376
1aafd909 1377#if ANOMALY_05000261
1394f032
BW		 1378/* Used by the assembly entry point to work around an anomaly. */
1379_last_cplb_fault_retx:
1380 .long 0;
1381#endif
1382/*
1383 * Single instructions can have multiple faults, which need to be
1384 * handled by traps.c, in irq5. We store the exception cause to ensure
1385 * we don't miss a double fault condition
1386 */
1387ENTRY(_in_ptr_excause)
1388 .long 0;
1389ENTRY(_out_ptr_excause)
1390 .long 0;
1391ALIGN
1392ENTRY(_excause_circ_buf)
1393 .rept 4
1394 .long 0
1395 .endr
kernel source for telekom puls (alcatel/mediatek)