]> bbs.cooldavid.org Git - net-next-2.6.git/blame - arch/blackfin/mach-common/entry.S
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Blackfin arch: fix bug when sending signals with the wrong PC, cause gdb get confused
[net-next-2.6.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;
46c87c3c 159ENDPROC(_ex_single_step)
1394f032 160
8d6c2420 161ENTRY(_bfin_return_from_exception)
669b792c 162 DEBUG_START_HWTRACE(p5, r7)
1aafd909 163#if ANOMALY_05000257
8af10b79
MH		 164 R7=LC0;
165 LC0=R7;
166 R7=LC1;
167 LC1=R7;
168#endif
1394f032
BW		 169 (R7:6,P5:4) = [sp++];
170 ASTAT = [sp++];
f0b5d12f 171 sp = EX_SCRATCH_REG;
1394f032 172 rtx;
46c87c3c 173ENDPROC(_bfin_return_from_exception)
1394f032
BW		 174
175ENTRY(_handle_bad_cplb)
176 /* To get here, we just tried and failed to change a CPLB
177 * so, handle things in trap_c (C code), by lowering to
178 * IRQ5, just like we normally do. Since this is not a
179 * "normal" return path, we have a do alot of stuff to
180 * the stack to get ready so, we can fall through - we
181 * need to make a CPLB exception look like a normal exception
182 */
183
669b792c 184 DEBUG_START_HWTRACE(p5, r7)
1394f032
BW		 185 RESTORE_ALL_SYS
186 [--sp] = ASTAT;
187 [--sp] = (R7:6, P5:4);
188
1ffe6646
MF		 189ENTRY(_ex_replaceable)
190 nop;
191
1394f032 192ENTRY(_ex_trap_c)
2ebcade5
RG		 193 /* Make sure we are not in a double fault */
194 p4.l = lo(IPEND);
195 p4.h = hi(IPEND);
196 r7 = [p4];
197 CC = BITTST (r7, 5);
198 if CC jump _double_fault;
199
1394f032
BW		 200 /* Call C code (trap_c) to handle the exception, which most
201 * likely involves sending a signal to the current process.
202 * To avoid double faults, lower our priority to IRQ5 first.
203 */
204 P5.h = _exception_to_level5;
205 P5.l = _exception_to_level5;
206 p4.l = lo(EVT5);
207 p4.h = hi(EVT5);
208 [p4] = p5;
209 csync;
210
211 /* Disable all interrupts, but make sure level 5 is enabled so
212 * we can switch to that level. Save the old mask. */
213 cli r6;
214 p4.l = _excpt_saved_imask;
215 p4.h = _excpt_saved_imask;
216 [p4] = r6;
217 r6 = 0x3f;
218 sti r6;
219
220 /* Save the excause into a circular buffer, in case the instruction
221 * which caused this excecptions causes others.
222 */
223 P5.l = _in_ptr_excause;
224 P5.h = _in_ptr_excause;
225 R7 = [P5];
226 R7 += 4;
227 R6 = 0xF;
228 R7 = R7 & R6;
229 [P5] = R7;
230 R6.l = _excause_circ_buf;
231 R6.h = _excause_circ_buf;
232 R7 = R7 + R6;
233 p5 = R7;
234 R6 = SEQSTAT;
235 [P5] = R6;
236
669b792c 237 DEBUG_START_HWTRACE(p5, r7)
1394f032
BW		 238 (R7:6,P5:4) = [sp++];
239 ASTAT = [sp++];
f0b5d12f 240 SP = EX_SCRATCH_REG;
1394f032
BW		 241 raise 5;
242 rtx;
51be24c3 243ENDPROC(_ex_trap_c)
1394f032 244
2ebcade5
RG		 245/* We just realized we got an exception, while we were processing a different
246 * exception. This is a unrecoverable event, so crash
247 */
248ENTRY(_double_fault)
249 /* Turn caches & protection off, to ensure we don't get any more
250 * double exceptions
251 */
252
253 P4.L = LO(IMEM_CONTROL);
254 P4.H = HI(IMEM_CONTROL);
255
256 R5 = [P4]; /* Control Register*/
257 BITCLR(R5,ENICPLB_P);
258 SSYNC; /* SSYNC required before writing to IMEM_CONTROL. */
259 .align 8;
260 [P4] = R5;
261 SSYNC;
262
263 P4.L = LO(DMEM_CONTROL);
264 P4.H = HI(DMEM_CONTROL);
265 R5 = [P4];
266 BITCLR(R5,ENDCPLB_P);
267 SSYNC; /* SSYNC required before writing to DMEM_CONTROL. */
268 .align 8;
269 [P4] = R5;
270 SSYNC;
271
272 /* Fix up the stack */
273 (R7:6,P5:4) = [sp++];
274 ASTAT = [sp++];
275 SP = EX_SCRATCH_REG;
276
277 /* We should be out of the exception stack, and back down into
278 * kernel or user space stack
279 */
280 SAVE_ALL_SYS
281
282 r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
283 SP += -12;
284 call _double_fault_c;
285 SP += 12;
286.L_double_fault_panic:
287 JUMP .L_double_fault_panic
288
289ENDPROC(_double_fault)
290
1394f032
BW		 291ENTRY(_exception_to_level5)
292 SAVE_ALL_SYS
293
294 /* Restore interrupt mask. We haven't pushed RETI, so this
295 * doesn't enable interrupts until we return from this handler. */
296 p4.l = _excpt_saved_imask;
297 p4.h = _excpt_saved_imask;
298 r6 = [p4];
299 sti r6;
300
301 /* Restore the hardware error vector. */
302 P5.h = _evt_ivhw;
303 P5.l = _evt_ivhw;
304 p4.l = lo(EVT5);
305 p4.h = hi(EVT5);
306 [p4] = p5;
307 csync;
308
309 p2.l = lo(IPEND);
310 p2.h = hi(IPEND);
311 csync;
312 r0 = [p2]; /* Read current IPEND */
313 [sp + PT_IPEND] = r0; /* Store IPEND */
314
315 /* Pop the excause from the circular buffer and push it on the stack
316 * (in the right place - if you change the location of SEQSTAT, you
317 * must change this offset.
318 */
319.L_excep_to_5_again:
320 P5.l = _out_ptr_excause;
321 P5.h = _out_ptr_excause;
322 R7 = [P5];
323 R7 += 4;
324 R6 = 0xF;
325 R7 = R7 & R6;
326 [P5] = R7;
327 R6.l = _excause_circ_buf;
328 R6.h = _excause_circ_buf;
329 R7 = R7 + R6;
330 P5 = R7;
331 R1 = [P5];
332 [SP + 8] = r1;
333
334 r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
335 SP += -12;
336 call _trap_c;
337 SP += 12;
338
339 /* See if anything else is in the exception buffer
340 * if there is, process it
341 */
342 P5.l = _out_ptr_excause;
343 P5.h = _out_ptr_excause;
344 P4.l = _in_ptr_excause;
345 P4.h = _in_ptr_excause;
346 R6 = [P5];
347 R7 = [P4];
348 CC = R6 == R7;
349 if ! CC JUMP .L_excep_to_5_again
350
351 call _ret_from_exception;
352 RESTORE_ALL_SYS
353 rti;
51be24c3 354ENDPROC(_exception_to_level5)
1394f032
BW		 355
356ENTRY(_trap) /* Exception: 4th entry into system event table(supervisor mode)*/
357 /* Since the kernel stack can be anywhere, it's not guaranteed to be
358 * covered by a CPLB. Switch to an exception stack; use RETN as a
359 * scratch register (for want of a better option).
360 */
f0b5d12f 361 EX_SCRATCH_REG = sp;
1394f032
BW		 362 sp.l = _exception_stack_top;
363 sp.h = _exception_stack_top;
364 /* Try to deal with syscalls quickly. */
365 [--sp] = ASTAT;
366 [--sp] = (R7:6, P5:4);
669b792c 367 DEBUG_STOP_HWTRACE(p5, r7)
1394f032
BW		 368 r7 = SEQSTAT; /* reason code is in bit 5:0 */
369 r6.l = lo(SEQSTAT_EXCAUSE);
370 r6.h = hi(SEQSTAT_EXCAUSE);
371 r7 = r7 & r6;
1ffe6646
MF		 372 p5.h = _ex_table;
373 p5.l = _ex_table;
1394f032
BW		 374 p4 = r7;
375 p5 = p5 + (p4 << 2);
376 p4 = [p5];
377 jump (p4);
378
379.Lbadsys:
380 r7 = -ENOSYS; /* signextending enough */
381 [sp + PT_R0] = r7; /* return value from system call */
382 jump .Lsyscall_really_exit;
51be24c3 383ENDPROC(_trap)
1394f032
BW		 384
385ENTRY(_kernel_execve)
386 link SIZEOF_PTREGS;
387 p0 = sp;
388 r3 = SIZEOF_PTREGS / 4;
389 r4 = 0(x);
3900:
391 [p0++] = r4;
392 r3 += -1;
393 cc = r3 == 0;
394 if !cc jump 0b (bp);
395
396 p0 = sp;
397 sp += -16;
398 [sp + 12] = p0;
399 call _do_execve;
400 SP += 16;
401 cc = r0 == 0;
402 if ! cc jump 1f;
403 /* Success. Copy our temporary pt_regs to the top of the kernel
404 * stack and do a normal exception return.
405 */
406 r1 = sp;
407 r0 = (-KERNEL_STACK_SIZE) (x);
408 r1 = r1 & r0;
409 p2 = r1;
410 p3 = [p2];
411 r0 = KERNEL_STACK_SIZE - 4 (z);
412 p1 = r0;
413 p1 = p1 + p2;
414
415 p0 = fp;
416 r4 = [p0--];
417 r3 = SIZEOF_PTREGS / 4;
4180:
419 r4 = [p0--];
420 [p1--] = r4;
421 r3 += -1;
422 cc = r3 == 0;
423 if ! cc jump 0b (bp);
424
425 r0 = (KERNEL_STACK_SIZE - SIZEOF_PTREGS) (z);
426 p1 = r0;
427 p1 = p1 + p2;
428 sp = p1;
429 r0 = syscfg;
430 [SP + PT_SYSCFG] = r0;
431 [p3 + (TASK_THREAD + THREAD_KSP)] = sp;
432
433 RESTORE_CONTEXT;
434 rti;
4351:
436 unlink;
437 rts;
51be24c3 438ENDPROC(_kernel_execve)
1394f032
BW		 439
440ENTRY(_system_call)
441 /* Store IPEND */
442 p2.l = lo(IPEND);
443 p2.h = hi(IPEND);
444 csync;
445 r0 = [p2];
446 [sp + PT_IPEND] = r0;
447
448 /* Store RETS for now */
449 r0 = rets;
450 [sp + PT_RESERVED] = r0;
451 /* Set the stack for the current process */
452 r7 = sp;
453 r6.l = lo(ALIGN_PAGE_MASK);
454 r6.h = hi(ALIGN_PAGE_MASK);
455 r7 = r7 & r6; /* thread_info */
456 p2 = r7;
457 p2 = [p2];
458
459 [p2+(TASK_THREAD+THREAD_KSP)] = sp;
460
461 /* Check the System Call */
462 r7 = __NR_syscall;
463 /* System call number is passed in P0 */
464 r6 = p0;
465 cc = r6 < r7;
466 if ! cc jump .Lbadsys;
467
468 /* are we tracing syscalls?*/
469 r7 = sp;
470 r6.l = lo(ALIGN_PAGE_MASK);
471 r6.h = hi(ALIGN_PAGE_MASK);
472 r7 = r7 & r6;
473 p2 = r7;
474 r7 = [p2+TI_FLAGS];
475 CC = BITTST(r7,TIF_SYSCALL_TRACE);
476 if CC JUMP _sys_trace;
477
478 /* Execute the appropriate system call */
479
480 p4 = p0;
481 p5.l = _sys_call_table;
482 p5.h = _sys_call_table;
483 p5 = p5 + (p4 << 2);
484 r0 = [sp + PT_R0];
485 r1 = [sp + PT_R1];
486 r2 = [sp + PT_R2];
487 p5 = [p5];
488
489 [--sp] = r5;
490 [--sp] = r4;
491 [--sp] = r3;
492 SP += -12;
493 call (p5);
494 SP += 24;
495 [sp + PT_R0] = r0;
496
497.Lresume_userspace:
498 r7 = sp;
499 r4.l = lo(ALIGN_PAGE_MASK);
500 r4.h = hi(ALIGN_PAGE_MASK);
501 r7 = r7 & r4; /* thread_info->flags */
502 p5 = r7;
503.Lresume_userspace_1:
504 /* Disable interrupts. */
505 [--sp] = reti;
506 reti = [sp++];
507
508 r7 = [p5 + TI_FLAGS];
509 r4.l = lo(_TIF_WORK_MASK);
510 r4.h = hi(_TIF_WORK_MASK);
511 r7 = r7 & r4;
512
513.Lsyscall_resched:
514 cc = BITTST(r7, TIF_NEED_RESCHED);
515 if !cc jump .Lsyscall_sigpending;
516
517 /* Reenable interrupts. */
518 [--sp] = reti;
519 r0 = [sp++];
520
521 SP += -12;
522 call _schedule;
523 SP += 12;
524
525 jump .Lresume_userspace_1;
526
527.Lsyscall_sigpending:
528 cc = BITTST(r7, TIF_RESTORE_SIGMASK);
529 if cc jump .Lsyscall_do_signals;
530 cc = BITTST(r7, TIF_SIGPENDING);
531 if !cc jump .Lsyscall_really_exit;
532.Lsyscall_do_signals:
533 /* Reenable interrupts. */
534 [--sp] = reti;
535 r0 = [sp++];
536
537 r0 = sp;
538 SP += -12;
539 call _do_signal;
540 SP += 12;
541
542.Lsyscall_really_exit:
543 r5 = [sp + PT_RESERVED];
544 rets = r5;
545 rts;
51be24c3 546ENDPROC(_system_call)
1394f032
BW		 547
548_sys_trace:
549 call _syscall_trace;
550
551 /* Execute the appropriate system call */
552
553 p4 = [SP + PT_P0];
554 p5.l = _sys_call_table;
555 p5.h = _sys_call_table;
556 p5 = p5 + (p4 << 2);
557 r0 = [sp + PT_R0];
558 r1 = [sp + PT_R1];
559 r2 = [sp + PT_R2];
560 r3 = [sp + PT_R3];
561 r4 = [sp + PT_R4];
562 r5 = [sp + PT_R5];
563 p5 = [p5];
564
565 [--sp] = r5;
566 [--sp] = r4;
567 [--sp] = r3;
568 SP += -12;
569 call (p5);
570 SP += 24;
571 [sp + PT_R0] = r0;
572
573 call _syscall_trace;
574 jump .Lresume_userspace;
51be24c3 575ENDPROC(_sys_trace)
1394f032
BW		 576
577ENTRY(_resume)
578 /*
579 * Beware - when entering resume, prev (the current task) is
580 * in r0, next (the new task) is in r1.
581 */
582 p0 = r0;
583 p1 = r1;
584 [--sp] = rets;
585 [--sp] = fp;
586 [--sp] = (r7:4, p5:3);
587
588 /* save usp */
589 p2 = usp;
590 [p0+(TASK_THREAD+THREAD_USP)] = p2;
591
592 /* save current kernel stack pointer */
593 [p0+(TASK_THREAD+THREAD_KSP)] = sp;
594
595 /* save program counter */
596 r1.l = _new_old_task;
597 r1.h = _new_old_task;
598 [p0+(TASK_THREAD+THREAD_PC)] = r1;
599
600 /* restore the kernel stack pointer */
601 sp = [p1+(TASK_THREAD+THREAD_KSP)];
602
603 /* restore user stack pointer */
604 p0 = [p1+(TASK_THREAD+THREAD_USP)];
605 usp = p0;
606
607 /* restore pc */
608 p0 = [p1+(TASK_THREAD+THREAD_PC)];
609 jump (p0);
610
611 /*
612 * Following code actually lands up in a new (old) task.
613 */
614
615_new_old_task:
616 (r7:4, p5:3) = [sp++];
617 fp = [sp++];
618 rets = [sp++];
619
620 /*
621 * When we come out of resume, r0 carries "old" task, becuase we are
622 * in "new" task.
623 */
624 rts;
51be24c3 625ENDPROC(_resume)
1394f032
BW		 626
627ENTRY(_ret_from_exception)
628 p2.l = lo(IPEND);
629 p2.h = hi(IPEND);
630
631 csync;
632 r0 = [p2];
633 [sp + PT_IPEND] = r0;
634
6351:
636 r1 = 0x37(Z);
637 r2 = ~r1;
638 r2.h = 0;
639 r0 = r2 & r0;
640 cc = r0 == 0;
641 if !cc jump 4f; /* if not return to user mode, get out */
642
643 /* Make sure any pending system call or deferred exception
644 * return in ILAT for this process to get executed, otherwise
645 * in case context switch happens, system call of
646 * first process (i.e in ILAT) will be carried
647 * forward to the switched process
648 */
649
650 p2.l = lo(ILAT);
651 p2.h = hi(ILAT);
652 r0 = [p2];
653 r1 = (EVT_IVG14 | EVT_IVG15) (z);
654 r0 = r0 & r1;
655 cc = r0 == 0;
656 if !cc jump 5f;
657
658 /* Set the stack for the current process */
659 r7 = sp;
660 r4.l = lo(ALIGN_PAGE_MASK);
661 r4.h = hi(ALIGN_PAGE_MASK);
662 r7 = r7 & r4; /* thread_info->flags */
663 p5 = r7;
664 r7 = [p5 + TI_FLAGS];
665 r4.l = lo(_TIF_WORK_MASK);
666 r4.h = hi(_TIF_WORK_MASK);
667 r7 = r7 & r4;
668 cc = r7 == 0;
669 if cc jump 4f;
670
671 p0.l = lo(EVT15);
672 p0.h = hi(EVT15);
673 p1.l = _schedule_and_signal;
674 p1.h = _schedule_and_signal;
675 [p0] = p1;
676 csync;
677 raise 15; /* raise evt14 to do signal or reschedule */
6784:
679 r0 = syscfg;
680 bitclr(r0, 0);
681 syscfg = r0;
6825:
683 rts;
51be24c3 684ENDPROC(_ret_from_exception)
1394f032
BW		 685
686ENTRY(_return_from_int)
687 /* If someone else already raised IRQ 15, do nothing. */
688 csync;
689 p2.l = lo(ILAT);
690 p2.h = hi(ILAT);
691 r0 = [p2];
692 cc = bittst (r0, EVT_IVG15_P);
693 if cc jump 2f;
694
695 /* if not return to user mode, get out */
696 p2.l = lo(IPEND);
697 p2.h = hi(IPEND);
698 r0 = [p2];
699 r1 = 0x17(Z);
700 r2 = ~r1;
701 r2.h = 0;
702 r0 = r2 & r0;
703 r1 = 1;
704 r1 = r0 - r1;
705 r2 = r0 & r1;
706 cc = r2 == 0;
707 if !cc jump 2f;
708
709 /* Lower the interrupt level to 15. */
710 p0.l = lo(EVT15);
711 p0.h = hi(EVT15);
712 p1.l = _schedule_and_signal_from_int;
713 p1.h = _schedule_and_signal_from_int;
714 [p0] = p1;
715 csync;
1aafd909 716#if ANOMALY_05000281
b3f8b927
RG		 717 r0.l = _safe_speculative_execution;
718 r0.h = _safe_speculative_execution;
1394f032
BW		 719 reti = r0;
720#endif
721 r0 = 0x801f (z);
722 STI r0;
723 raise 15; /* raise evt15 to do signal or reschedule */
724 rti;
7252:
726 rts;
51be24c3 727ENDPROC(_return_from_int)
1394f032
BW		 728
729ENTRY(_lower_to_irq14)
1aafd909 730#if ANOMALY_05000281
b3f8b927
RG		 731 r0.l = _safe_speculative_execution;
732 r0.h = _safe_speculative_execution;
1394f032
BW		 733 reti = r0;
734#endif
735 r0 = 0x401f;
736 sti r0;
737 raise 14;
738 rti;
739ENTRY(_evt14_softirq)
740#ifdef CONFIG_DEBUG_HWERR
741 r0 = 0x3f;
742 sti r0;
743#else
744 cli r0;
745#endif
746 [--sp] = RETI;
747 SP += 4;
748 rts;
749
750_schedule_and_signal_from_int:
751 /* To end up here, vector 15 was changed - so we have to change it
752 * back.
753 */
754 p0.l = lo(EVT15);
755 p0.h = hi(EVT15);
756 p1.l = _evt_system_call;
757 p1.h = _evt_system_call;
758 [p0] = p1;
759 csync;
c824498d
BS		 760
761 /* Set orig_p0 to -1 to indicate this isn't the end of a syscall. */
762 r0 = -1 (x);
763 [sp + PT_ORIG_P0] = r0;
764
1394f032
BW		 765 p1 = rets;
766 [sp + PT_RESERVED] = p1;
767
768 p0.l = _irq_flags;
769 p0.h = _irq_flags;
770 r0 = [p0];
771 sti r0;
772
7adfb58f
BS		 773 r0 = sp;
774 sp += -12;
775 call _finish_atomic_sections;
776 sp += 12;
1394f032
BW		 777 jump.s .Lresume_userspace;
778
779_schedule_and_signal:
780 SAVE_CONTEXT_SYSCALL
781 /* To end up here, vector 15 was changed - so we have to change it
782 * back.
783 */
784 p0.l = lo(EVT15);
785 p0.h = hi(EVT15);
786 p1.l = _evt_system_call;
787 p1.h = _evt_system_call;
788 [p0] = p1;
789 csync;
790 p0.l = 1f;
791 p0.h = 1f;
792 [sp + PT_RESERVED] = P0;
793 call .Lresume_userspace;
7941:
795 RESTORE_CONTEXT
796 rti;
51be24c3 797ENDPROC(_lower_to_irq14)
1394f032
BW		 798
799/* Make sure when we start, that the circular buffer is initialized properly
800 * R0 and P0 are call clobbered, so we can use them here.
801 */
802ENTRY(_init_exception_buff)
803 r0 = 0;
804 p0.h = _in_ptr_excause;
805 p0.l = _in_ptr_excause;
806 [p0] = r0;
807 p0.h = _out_ptr_excause;
808 p0.l = _out_ptr_excause;
809 [p0] = r0;
810 rts;
51be24c3 811ENDPROC(_init_exception_buff)
1394f032 812
518039bc
RG		 813/* We handle this 100% in exception space - to reduce overhead
814 * Only potiential problem is if the software buffer gets swapped out of the
815 * CPLB table - then double fault. - so we don't let this happen in other places
816 */
817#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
818ENTRY(_ex_trace_buff_full)
819 [--sp] = P3;
820 [--sp] = P2;
821 [--sp] = LC0;
822 [--sp] = LT0;
823 [--sp] = LB0;
824 P5.L = _trace_buff_offset;
825 P5.H = _trace_buff_offset;
826 P3 = [P5]; /* trace_buff_offset */
827 P5.L = lo(TBUFSTAT);
828 P5.H = hi(TBUFSTAT);
829 R7 = [P5];
830 R7 <<= 1; /* double, since we need to read twice */
831 LC0 = R7;
832 R7 <<= 2; /* need to shift over again,
833 * to get the number of bytes */
834 P5.L = lo(TBUF);
835 P5.H = hi(TBUF);
836 R6 = ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN)*1024) - 1;
837
838 P2 = R7;
839 P3 = P3 + P2;
840 R7 = P3;
841 R7 = R7 & R6;
842 P3 = R7;
843 P2.L = _trace_buff_offset;
844 P2.H = _trace_buff_offset;
845 [P2] = P3;
846
847 P2.L = _software_trace_buff;
848 P2.H = _software_trace_buff;
849
850 LSETUP (.Lstart, .Lend) LC0;
851.Lstart:
852 R7 = [P5]; /* read TBUF */
853 P4 = P3 + P2;
854 [P4] = R7;
855 P3 += -4;
856 R7 = P3;
857 R7 = R7 & R6;
858.Lend:
859 P3 = R7;
860
861 LB0 = [sp++];
862 LT0 = [sp++];
863 LC0 = [sp++];
864 P2 = [sp++];
865 P3 = [sp++];
8d6c2420 866 jump _bfin_return_from_exception;
337d390b 867ENDPROC(_ex_trace_buff_full)
518039bc
RG		 868
869#if CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN == 4
870.data
871#else
872.section .l1.data.B
337d390b 873#endif /* CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN */
518039bc
RG		 874ENTRY(_trace_buff_offset)
875 .long 0;
876ALIGN
877ENTRY(_software_trace_buff)
878 .rept ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN)*256);
879 .long 0
880 .endr
337d390b
RG		 881#endif /* CONFIG_DEBUG_BFIN_HWTRACE_EXPAND */
882
883#if CONFIG_EARLY_PRINTK
0bad33d9 884.section .init.text,"ax"
337d390b
RG		 885ENTRY(_early_trap)
886 SAVE_ALL_SYS
887 trace_buffer_stop(p0,r0);
888
889 /* Turn caches off, to ensure we don't get double exceptions */
890
891 P4.L = LO(IMEM_CONTROL);
892 P4.H = HI(IMEM_CONTROL);
893
894 R5 = [P4]; /* Control Register*/
895 BITCLR(R5,ENICPLB_P);
896 CLI R1;
897 SSYNC; /* SSYNC required before writing to IMEM_CONTROL. */
898 .align 8;
899 [P4] = R5;
900 SSYNC;
901
902 P4.L = LO(DMEM_CONTROL);
903 P4.H = HI(DMEM_CONTROL);
904 R5 = [P4];
905 BITCLR(R5,ENDCPLB_P);
906 SSYNC; /* SSYNC required before writing to DMEM_CONTROL. */
907 .align 8;
908 [P4] = R5;
909 SSYNC;
910 STI R1;
911
912 r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
913 r1 = RETX;
914
915 SP += -12;
916 call _early_trap_c;
917 SP += 12;
918ENDPROC(_early_trap)
919#endif /* CONFIG_EARLY_PRINTK */
518039bc 920
1394f032
BW		 921/*
922 * Put these in the kernel data section - that should always be covered by
923 * a CPLB. This is needed to ensure we don't get double fault conditions
924 */
925
926#ifdef CONFIG_SYSCALL_TAB_L1
927.section .l1.data
928#else
929.data
930#endif
f26fbc48 931
1ffe6646 932ENTRY(_ex_table)
1394f032 933 /* entry for each EXCAUSE[5:0]
9401e618 934 * This table must be in sync with the table in ./kernel/traps.c
1394f032
BW		 935 * EXCPT instruction can provide 4 bits of EXCAUSE, allowing 16 to be user defined
936 */
1ffe6646 937 .long _ex_syscall /* 0x00 - User Defined - Linux Syscall */
1394f032 938 .long _ex_soft_bp /* 0x01 - User Defined - Software breakpoint */
1ffe6646 939 .long _ex_replaceable /* 0x02 - User Defined */
9401e618 940 .long _ex_trap_c /* 0x03 - User Defined - userspace stack overflow */
9f336a53 941 .long _ex_trap_c /* 0x04 - User Defined - dump trace buffer */
1ffe6646
MF		 942 .long _ex_replaceable /* 0x05 - User Defined */
943 .long _ex_replaceable /* 0x06 - User Defined */
944 .long _ex_replaceable /* 0x07 - User Defined */
945 .long _ex_replaceable /* 0x08 - User Defined */
946 .long _ex_replaceable /* 0x09 - User Defined */
947 .long _ex_replaceable /* 0x0A - User Defined */
948 .long _ex_replaceable /* 0x0B - User Defined */
949 .long _ex_replaceable /* 0x0C - User Defined */
950 .long _ex_replaceable /* 0x0D - User Defined */
951 .long _ex_replaceable /* 0x0E - User Defined */
952 .long _ex_replaceable /* 0x0F - User Defined */
1394f032 953 .long _ex_single_step /* 0x10 - HW Single step */
518039bc
RG		 954#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
955 .long _ex_trace_buff_full /* 0x11 - Trace Buffer Full */
956#else
1394f032 957 .long _ex_trap_c /* 0x11 - Trace Buffer Full */
518039bc 958#endif
1394f032
BW		 959 .long _ex_trap_c /* 0x12 - Reserved */
960 .long _ex_trap_c /* 0x13 - Reserved */
961 .long _ex_trap_c /* 0x14 - Reserved */
962 .long _ex_trap_c /* 0x15 - Reserved */
963 .long _ex_trap_c /* 0x16 - Reserved */
964 .long _ex_trap_c /* 0x17 - Reserved */
965 .long _ex_trap_c /* 0x18 - Reserved */
966 .long _ex_trap_c /* 0x19 - Reserved */
967 .long _ex_trap_c /* 0x1A - Reserved */
968 .long _ex_trap_c /* 0x1B - Reserved */
969 .long _ex_trap_c /* 0x1C - Reserved */
970 .long _ex_trap_c /* 0x1D - Reserved */
971 .long _ex_trap_c /* 0x1E - Reserved */
972 .long _ex_trap_c /* 0x1F - Reserved */
973 .long _ex_trap_c /* 0x20 - Reserved */
974 .long _ex_trap_c /* 0x21 - Undefined Instruction */
975 .long _ex_trap_c /* 0x22 - Illegal Instruction Combination */
f26fbc48 976 .long _ex_dviol /* 0x23 - Data CPLB Protection Violation */
1394f032
BW		 977 .long _ex_trap_c /* 0x24 - Data access misaligned */
978 .long _ex_trap_c /* 0x25 - Unrecoverable Event */
f26fbc48
RG		 979 .long _ex_dmiss /* 0x26 - Data CPLB Miss */
980 .long _ex_dmult /* 0x27 - Data CPLB Multiple Hits - Linux Trap Zero */
1394f032
BW		 981 .long _ex_trap_c /* 0x28 - Emulation Watchpoint */
982 .long _ex_trap_c /* 0x29 - Instruction fetch access error (535 only) */
983 .long _ex_trap_c /* 0x2A - Instruction fetch misaligned */
f26fbc48
RG		 984 .long _ex_trap_c /* 0x2B - Instruction CPLB protection Violation */
985 .long _ex_icplb_miss /* 0x2C - Instruction CPLB miss */
1394f032
BW		 986 .long _ex_trap_c /* 0x2D - Instruction CPLB Multiple Hits */
987 .long _ex_trap_c /* 0x2E - Illegal use of Supervisor Resource */
988 .long _ex_trap_c /* 0x2E - Illegal use of Supervisor Resource */
989 .long _ex_trap_c /* 0x2F - Reserved */
990 .long _ex_trap_c /* 0x30 - Reserved */
991 .long _ex_trap_c /* 0x31 - Reserved */
992 .long _ex_trap_c /* 0x32 - Reserved */
993 .long _ex_trap_c /* 0x33 - Reserved */
994 .long _ex_trap_c /* 0x34 - Reserved */
995 .long _ex_trap_c /* 0x35 - Reserved */
996 .long _ex_trap_c /* 0x36 - Reserved */
997 .long _ex_trap_c /* 0x37 - Reserved */
998 .long _ex_trap_c /* 0x38 - Reserved */
999 .long _ex_trap_c /* 0x39 - Reserved */
1000 .long _ex_trap_c /* 0x3A - Reserved */
1001 .long _ex_trap_c /* 0x3B - Reserved */
1002 .long _ex_trap_c /* 0x3C - Reserved */
1003 .long _ex_trap_c /* 0x3D - Reserved */
1004 .long _ex_trap_c /* 0x3E - Reserved */
1005 .long _ex_trap_c /* 0x3F - Reserved */
1ffe6646 1006END(_ex_table)
1394f032 1007
1394f032 1008ENTRY(_sys_call_table)
0b95f22b 1009 .long _sys_restart_syscall /* 0 */
1394f032
BW		 1010 .long _sys_exit
1011 .long _sys_fork
1012 .long _sys_read
1013 .long _sys_write
1014 .long _sys_open /* 5 */
1015 .long _sys_close
1016 .long _sys_ni_syscall /* old waitpid */
1017 .long _sys_creat
1018 .long _sys_link
1019 .long _sys_unlink /* 10 */
1020 .long _sys_execve
1021 .long _sys_chdir
1022 .long _sys_time
1023 .long _sys_mknod
1024 .long _sys_chmod /* 15 */
1025 .long _sys_chown /* chown16 */
1026 .long _sys_ni_syscall /* old break syscall holder */
1027 .long _sys_ni_syscall /* old stat */
1028 .long _sys_lseek
1029 .long _sys_getpid /* 20 */
1030 .long _sys_mount
1031 .long _sys_ni_syscall /* old umount */
1032 .long _sys_setuid
1033 .long _sys_getuid
1034 .long _sys_stime /* 25 */
1035 .long _sys_ptrace
1036 .long _sys_alarm
1037 .long _sys_ni_syscall /* old fstat */
1038 .long _sys_pause
1039 .long _sys_ni_syscall /* old utime */ /* 30 */
1040 .long _sys_ni_syscall /* old stty syscall holder */
1041 .long _sys_ni_syscall /* old gtty syscall holder */
1042 .long _sys_access
1043 .long _sys_nice
1044 .long _sys_ni_syscall /* 35 */ /* old ftime syscall holder */
1045 .long _sys_sync
1046 .long _sys_kill
1047 .long _sys_rename
1048 .long _sys_mkdir
1049 .long _sys_rmdir /* 40 */
1050 .long _sys_dup
1051 .long _sys_pipe
1052 .long _sys_times
1053 .long _sys_ni_syscall /* old prof syscall holder */
1054 .long _sys_brk /* 45 */
1055 .long _sys_setgid
1056 .long _sys_getgid
1057 .long _sys_ni_syscall /* old sys_signal */
1058 .long _sys_geteuid /* geteuid16 */
1059 .long _sys_getegid /* getegid16 */ /* 50 */
1060 .long _sys_acct
1061 .long _sys_umount /* recycled never used phys() */
1062 .long _sys_ni_syscall /* old lock syscall holder */
1063 .long _sys_ioctl
1064 .long _sys_fcntl /* 55 */
1065 .long _sys_ni_syscall /* old mpx syscall holder */
1066 .long _sys_setpgid
1067 .long _sys_ni_syscall /* old ulimit syscall holder */
1068 .long _sys_ni_syscall /* old old uname */
1069 .long _sys_umask /* 60 */
1070 .long _sys_chroot
1071 .long _sys_ustat
1072 .long _sys_dup2
1073 .long _sys_getppid
1074 .long _sys_getpgrp /* 65 */
1075 .long _sys_setsid
1076 .long _sys_ni_syscall /* old sys_sigaction */
1077 .long _sys_sgetmask
1078 .long _sys_ssetmask
1079 .long _sys_setreuid /* setreuid16 */ /* 70 */
1080 .long _sys_setregid /* setregid16 */
1081 .long _sys_ni_syscall /* old sys_sigsuspend */
1082 .long _sys_ni_syscall /* old sys_sigpending */
1083 .long _sys_sethostname
1084 .long _sys_setrlimit /* 75 */
1085 .long _sys_ni_syscall /* old getrlimit */
1086 .long _sys_getrusage
1087 .long _sys_gettimeofday
1088 .long _sys_settimeofday
1089 .long _sys_getgroups /* getgroups16 */ /* 80 */
1090 .long _sys_setgroups /* setgroups16 */
1091 .long _sys_ni_syscall /* old_select */
1092 .long _sys_symlink
1093 .long _sys_ni_syscall /* old lstat */
1094 .long _sys_readlink /* 85 */
1095 .long _sys_uselib
1096 .long _sys_ni_syscall /* sys_swapon */
1097 .long _sys_reboot
1098 .long _sys_ni_syscall /* old_readdir */
1099 .long _sys_ni_syscall /* sys_mmap */ /* 90 */
1100 .long _sys_munmap
1101 .long _sys_truncate
1102 .long _sys_ftruncate
1103 .long _sys_fchmod
1104 .long _sys_fchown /* fchown16 */ /* 95 */
1105 .long _sys_getpriority
1106 .long _sys_setpriority
1107 .long _sys_ni_syscall /* old profil syscall holder */
1108 .long _sys_statfs
1109 .long _sys_fstatfs /* 100 */
1110 .long _sys_ni_syscall
1111 .long _sys_ni_syscall /* old sys_socketcall */
1112 .long _sys_syslog
1113 .long _sys_setitimer
1114 .long _sys_getitimer /* 105 */
1115 .long _sys_newstat
1116 .long _sys_newlstat
1117 .long _sys_newfstat
1118 .long _sys_ni_syscall /* old uname */
1119 .long _sys_ni_syscall /* iopl for i386 */ /* 110 */
1120 .long _sys_vhangup
1121 .long _sys_ni_syscall /* obsolete idle() syscall */
1122 .long _sys_ni_syscall /* vm86old for i386 */
1123 .long _sys_wait4
1124 .long _sys_ni_syscall /* 115 */ /* sys_swapoff */
1125 .long _sys_sysinfo
1126 .long _sys_ni_syscall /* old sys_ipc */
1127 .long _sys_fsync
1128 .long _sys_ni_syscall /* old sys_sigreturn */
1129 .long _sys_clone /* 120 */
1130 .long _sys_setdomainname
1131 .long _sys_newuname
1132 .long _sys_ni_syscall /* old sys_modify_ldt */
1133 .long _sys_adjtimex
1134 .long _sys_ni_syscall /* 125 */ /* sys_mprotect */
1135 .long _sys_ni_syscall /* old sys_sigprocmask */
1136 .long _sys_ni_syscall /* old "creat_module" */
1137 .long _sys_init_module
1138 .long _sys_delete_module
1139 .long _sys_ni_syscall /* 130: old "get_kernel_syms" */
1140 .long _sys_quotactl
1141 .long _sys_getpgid
1142 .long _sys_fchdir
1143 .long _sys_bdflush
1144 .long _sys_ni_syscall /* 135 */ /* sys_sysfs */
1145 .long _sys_personality
1146 .long _sys_ni_syscall /* for afs_syscall */
1147 .long _sys_setfsuid /* setfsuid16 */
1148 .long _sys_setfsgid /* setfsgid16 */
1149 .long _sys_llseek /* 140 */
1150 .long _sys_getdents
1151 .long _sys_ni_syscall /* sys_select */
1152 .long _sys_flock
1153 .long _sys_ni_syscall /* sys_msync */
1154 .long _sys_readv /* 145 */
1155 .long _sys_writev
1156 .long _sys_getsid
1157 .long _sys_fdatasync
1158 .long _sys_sysctl
1159 .long _sys_ni_syscall /* 150 */ /* sys_mlock */
1160 .long _sys_ni_syscall /* sys_munlock */
1161 .long _sys_ni_syscall /* sys_mlockall */
1162 .long _sys_ni_syscall /* sys_munlockall */
1163 .long _sys_sched_setparam
1164 .long _sys_sched_getparam /* 155 */
1165 .long _sys_sched_setscheduler
1166 .long _sys_sched_getscheduler
1167 .long _sys_sched_yield
1168 .long _sys_sched_get_priority_max
1169 .long _sys_sched_get_priority_min /* 160 */
1170 .long _sys_sched_rr_get_interval
1171 .long _sys_nanosleep
0b95f22b 1172 .long _sys_mremap
1394f032
BW		 1173 .long _sys_setresuid /* setresuid16 */
1174 .long _sys_getresuid /* getresuid16 */ /* 165 */
1175 .long _sys_ni_syscall /* for vm86 */
1176 .long _sys_ni_syscall /* old "query_module" */
1177 .long _sys_ni_syscall /* sys_poll */
0b95f22b 1178 .long _sys_nfsservctl
1394f032
BW		 1179 .long _sys_setresgid /* setresgid16 */ /* 170 */
1180 .long _sys_getresgid /* getresgid16 */
1181 .long _sys_prctl
1182 .long _sys_rt_sigreturn
1183 .long _sys_rt_sigaction
1184 .long _sys_rt_sigprocmask /* 175 */
1185 .long _sys_rt_sigpending
1186 .long _sys_rt_sigtimedwait
1187 .long _sys_rt_sigqueueinfo
1188 .long _sys_rt_sigsuspend
1189 .long _sys_pread64 /* 180 */
1190 .long _sys_pwrite64
1191 .long _sys_lchown /* lchown16 */
1192 .long _sys_getcwd
1193 .long _sys_capget
1194 .long _sys_capset /* 185 */
1195 .long _sys_sigaltstack
1196 .long _sys_sendfile
1197 .long _sys_ni_syscall /* streams1 */
1198 .long _sys_ni_syscall /* streams2 */
1199 .long _sys_vfork /* 190 */
1200 .long _sys_getrlimit
1201 .long _sys_mmap2
1202 .long _sys_truncate64
1203 .long _sys_ftruncate64
1204 .long _sys_stat64 /* 195 */
1205 .long _sys_lstat64
1206 .long _sys_fstat64
1207 .long _sys_chown
1208 .long _sys_getuid
1209 .long _sys_getgid /* 200 */
1210 .long _sys_geteuid
1211 .long _sys_getegid
1212 .long _sys_setreuid
1213 .long _sys_setregid
1214 .long _sys_getgroups /* 205 */
1215 .long _sys_setgroups
1216 .long _sys_fchown
1217 .long _sys_setresuid
1218 .long _sys_getresuid
1219 .long _sys_setresgid /* 210 */
1220 .long _sys_getresgid
1221 .long _sys_lchown
1222 .long _sys_setuid
1223 .long _sys_setgid
1224 .long _sys_setfsuid /* 215 */
1225 .long _sys_setfsgid
1226 .long _sys_pivot_root
1227 .long _sys_ni_syscall /* sys_mincore */
1228 .long _sys_ni_syscall /* sys_madvise */
1229 .long _sys_getdents64 /* 220 */
1230 .long _sys_fcntl64
1231 .long _sys_ni_syscall /* reserved for TUX */
1232 .long _sys_ni_syscall
1233 .long _sys_gettid
0b95f22b 1234 .long _sys_readahead /* 225 */
1394f032
BW		 1235 .long _sys_setxattr
1236 .long _sys_lsetxattr
1237 .long _sys_fsetxattr
1238 .long _sys_getxattr
1239 .long _sys_lgetxattr /* 230 */
1240 .long _sys_fgetxattr
1241 .long _sys_listxattr
1242 .long _sys_llistxattr
1243 .long _sys_flistxattr
1244 .long _sys_removexattr /* 235 */
1245 .long _sys_lremovexattr
1246 .long _sys_fremovexattr
1247 .long _sys_tkill
1248 .long _sys_sendfile64
1249 .long _sys_futex /* 240 */
1250 .long _sys_sched_setaffinity
1251 .long _sys_sched_getaffinity
1252 .long _sys_ni_syscall /* sys_set_thread_area */
1253 .long _sys_ni_syscall /* sys_get_thread_area */
1254 .long _sys_io_setup /* 245 */
1255 .long _sys_io_destroy
1256 .long _sys_io_getevents
1257 .long _sys_io_submit
1258 .long _sys_io_cancel
1259 .long _sys_ni_syscall /* 250 */ /* sys_alloc_hugepages */
1260 .long _sys_ni_syscall /* sys_freec_hugepages */
1261 .long _sys_exit_group
1262 .long _sys_lookup_dcookie
1263 .long _sys_bfin_spinlock
1264 .long _sys_epoll_create /* 255 */
1265 .long _sys_epoll_ctl
1266 .long _sys_epoll_wait
1267 .long _sys_ni_syscall /* remap_file_pages */
1268 .long _sys_set_tid_address
1269 .long _sys_timer_create /* 260 */
1270 .long _sys_timer_settime
1271 .long _sys_timer_gettime
1272 .long _sys_timer_getoverrun
1273 .long _sys_timer_delete
1274 .long _sys_clock_settime /* 265 */
1275 .long _sys_clock_gettime
1276 .long _sys_clock_getres
1277 .long _sys_clock_nanosleep
1278 .long _sys_statfs64
1279 .long _sys_fstatfs64 /* 270 */
1280 .long _sys_tgkill
1281 .long _sys_utimes
1282 .long _sys_fadvise64_64
1283 .long _sys_ni_syscall /* vserver */
1284 .long _sys_ni_syscall /* 275, mbind */
1285 .long _sys_ni_syscall /* get_mempolicy */
1286 .long _sys_ni_syscall /* set_mempolicy */
1287 .long _sys_mq_open
1288 .long _sys_mq_unlink
1289 .long _sys_mq_timedsend /* 280 */
1290 .long _sys_mq_timedreceive
1291 .long _sys_mq_notify
1292 .long _sys_mq_getsetattr
1293 .long _sys_ni_syscall /* kexec_load */
1294 .long _sys_waitid /* 285 */
1295 .long _sys_add_key
1296 .long _sys_request_key
1297 .long _sys_keyctl
1298 .long _sys_ioprio_set
1299 .long _sys_ioprio_get /* 290 */
1300 .long _sys_inotify_init
1301 .long _sys_inotify_add_watch
1302 .long _sys_inotify_rm_watch
1303 .long _sys_ni_syscall /* migrate_pages */
1304 .long _sys_openat /* 295 */
1305 .long _sys_mkdirat
1306 .long _sys_mknodat
1307 .long _sys_fchownat
1308 .long _sys_futimesat
1309 .long _sys_fstatat64 /* 300 */
1310 .long _sys_unlinkat
1311 .long _sys_renameat
1312 .long _sys_linkat
1313 .long _sys_symlinkat
1314 .long _sys_readlinkat /* 305 */
1315 .long _sys_fchmodat
1316 .long _sys_faccessat
1317 .long _sys_pselect6
1318 .long _sys_ppoll
1319 .long _sys_unshare /* 310 */
1320 .long _sys_sram_alloc
1321 .long _sys_sram_free
1322 .long _sys_dma_memcpy
1323 .long _sys_accept
1324 .long _sys_bind /* 315 */
1325 .long _sys_connect
1326 .long _sys_getpeername
1327 .long _sys_getsockname
1328 .long _sys_getsockopt
1329 .long _sys_listen /* 320 */
1330 .long _sys_recv
1331 .long _sys_recvfrom
1332 .long _sys_recvmsg
1333 .long _sys_send
1334 .long _sys_sendmsg /* 325 */
1335 .long _sys_sendto
1336 .long _sys_setsockopt
1337 .long _sys_shutdown
1338 .long _sys_socket
1339 .long _sys_socketpair /* 330 */
1340 .long _sys_semctl
1341 .long _sys_semget
1342 .long _sys_semop
1343 .long _sys_msgctl
1344 .long _sys_msgget /* 335 */
1345 .long _sys_msgrcv
1346 .long _sys_msgsnd
1347 .long _sys_shmat
1348 .long _sys_shmctl
1349 .long _sys_shmdt /* 340 */
1350 .long _sys_shmget
0b95f22b
BW		 1351 .long _sys_splice
1352 .long _sys_sync_file_range
1353 .long _sys_tee
1354 .long _sys_vmsplice /* 345 */
1355 .long _sys_epoll_pwait
1356 .long _sys_utimensat
1357 .long _sys_signalfd
1358 .long _sys_timerfd
1359 .long _sys_eventfd /* 350 */
1360 .long _sys_pread64
1361 .long _sys_pwrite64
1362 .long _sys_fadvise64
1363 .long _sys_set_robust_list
1364 .long _sys_get_robust_list /* 355 */
1365 .long _sys_fallocate
1394f032
BW		 1366 .rept NR_syscalls-(.-_sys_call_table)/4
1367 .long _sys_ni_syscall
1368 .endr
1369_excpt_saved_imask:
1370 .long 0;
1371
1372_exception_stack:
1373 .rept 1024
1374 .long 0;
1375 .endr
1376_exception_stack_top:
1377
1aafd909 1378#if ANOMALY_05000261
1394f032
BW		 1379/* Used by the assembly entry point to work around an anomaly. */
1380_last_cplb_fault_retx:
1381 .long 0;
1382#endif
1383/*
1384 * Single instructions can have multiple faults, which need to be
1385 * handled by traps.c, in irq5. We store the exception cause to ensure
1386 * we don't miss a double fault condition
1387 */
1388ENTRY(_in_ptr_excause)
1389 .long 0;
1390ENTRY(_out_ptr_excause)
1391 .long 0;
1392ALIGN
1393ENTRY(_excause_circ_buf)
1394 .rept 4
1395 .long 0
1396 .endr
Clone of davem's net-next-2.6 tree