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[PATCH] mm: fallback_alloc cpuset_zone_allowed irq fix
[net-next-2.6.git] / arch / m32r / kernel / entry.S
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1da177e4
LT		 1/*
2 * linux/arch/m32r/kernel/entry.S
3 *
4 * Copyright (c) 2001, 2002 Hirokazu Takata, Hitoshi Yamamoto, H. Kondo
5 * Copyright (c) 2003 Hitoshi Yamamoto
6 * Copyright (c) 2004 Hirokazu Takata <takata at linux-m32r.org>
7 *
8 * Taken from i386 version.
9 * Copyright (C) 1991, 1992 Linus Torvalds
10 */
11
12/*
13 * entry.S contains the system-call and fault low-level handling routines.
14 * This also contains the timer-interrupt handler, as well as all interrupts
15 * and faults that can result in a task-switch.
16 *
17 * NOTE: This code handles signal-recognition, which happens every time
18 * after a timer-interrupt and after each system call.
19 *
20 * Stack layout in 'ret_from_system_call':
21 * ptrace needs to have all regs on the stack.
22 * if the order here is changed, it needs to be
8e8ff02c 23 * updated in fork.c:copy_thread, signal.c:do_signal,
1da177e4
LT		 24 * ptrace.c and ptrace.h
25 *
26 * M32Rx/M32R2 M32R
27 * @(sp) - r4 ditto
28 * @(0x04,sp) - r5 ditto
29 * @(0x08,sp) - r6 ditto
30 * @(0x0c,sp) - *pt_regs ditto
31 * @(0x10,sp) - r0 ditto
32 * @(0x14,sp) - r1 ditto
33 * @(0x18,sp) - r2 ditto
34 * @(0x1c,sp) - r3 ditto
35 * @(0x20,sp) - r7 ditto
36 * @(0x24,sp) - r8 ditto
37 * @(0x28,sp) - r9 ditto
38 * @(0x2c,sp) - r10 ditto
39 * @(0x30,sp) - r11 ditto
40 * @(0x34,sp) - r12 ditto
41 * @(0x38,sp) - syscall_nr ditto
42 * @(0x3c,sp) - acc0h @(0x3c,sp) - acch
43 * @(0x40,sp) - acc0l @(0x40,sp) - accl
8e8ff02c
HT		 44 * @(0x44,sp) - acc1h @(0x44,sp) - dummy_acc1h
45 * @(0x48,sp) - acc1l @(0x48,sp) - dummy_acc1l
46 * @(0x4c,sp) - psw ditto
47 * @(0x50,sp) - bpc ditto
48 * @(0x54,sp) - bbpsw ditto
49 * @(0x58,sp) - bbpc ditto
50 * @(0x5c,sp) - spu (cr3) ditto
51 * @(0x60,sp) - fp (r13) ditto
52 * @(0x64,sp) - lr (r14) ditto
53 * @(0x68,sp) - spi (cr2) ditto
54 * @(0x6c,sp) - orig_r0 ditto
1da177e4
LT		 55 */
56
1da177e4
LT		 57#include <linux/linkage.h>
58#include <asm/irq.h>
59#include <asm/unistd.h>
60#include <asm/assembler.h>
61#include <asm/thread_info.h>
62#include <asm/errno.h>
63#include <asm/segment.h>
64#include <asm/smp.h>
65#include <asm/page.h>
66#include <asm/m32r.h>
67#include <asm/mmu_context.h>
68
69#if !defined(CONFIG_MMU)
70#define sys_madvise sys_ni_syscall
71#define sys_readahead sys_ni_syscall
72#define sys_mprotect sys_ni_syscall
73#define sys_msync sys_ni_syscall
74#define sys_mlock sys_ni_syscall
75#define sys_munlock sys_ni_syscall
76#define sys_mlockall sys_ni_syscall
77#define sys_munlockall sys_ni_syscall
78#define sys_mremap sys_ni_syscall
79#define sys_mincore sys_ni_syscall
80#define sys_remap_file_pages sys_ni_syscall
81#endif /* CONFIG_MMU */
82
83#define R4(reg) @reg
84#define R5(reg) @(0x04,reg)
85#define R6(reg) @(0x08,reg)
86#define PTREGS(reg) @(0x0C,reg)
87#define R0(reg) @(0x10,reg)
88#define R1(reg) @(0x14,reg)
89#define R2(reg) @(0x18,reg)
90#define R3(reg) @(0x1C,reg)
91#define R7(reg) @(0x20,reg)
92#define R8(reg) @(0x24,reg)
93#define R9(reg) @(0x28,reg)
94#define R10(reg) @(0x2C,reg)
95#define R11(reg) @(0x30,reg)
96#define R12(reg) @(0x34,reg)
97#define SYSCALL_NR(reg) @(0x38,reg)
98#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
99#define ACC0H(reg) @(0x3C,reg)
100#define ACC0L(reg) @(0x40,reg)
101#define ACC1H(reg) @(0x44,reg)
102#define ACC1L(reg) @(0x48,reg)
8e8ff02c
HT		 103#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
104#define ACCH(reg) @(0x3C,reg)
105#define ACCL(reg) @(0x40,reg)
106#else
107#error unknown isa configuration
108#endif
1da177e4
LT		 109#define PSW(reg) @(0x4C,reg)
110#define BPC(reg) @(0x50,reg)
111#define BBPSW(reg) @(0x54,reg)
112#define BBPC(reg) @(0x58,reg)
113#define SPU(reg) @(0x5C,reg)
114#define FP(reg) @(0x60,reg) /* FP = R13 */
115#define LR(reg) @(0x64,reg)
116#define SP(reg) @(0x68,reg)
117#define ORIG_R0(reg) @(0x6C,reg)
1da177e4
LT		 118
119CF_MASK = 0x00000001
120TF_MASK = 0x00000100
121IF_MASK = 0x00000200
122DF_MASK = 0x00000400
123NT_MASK = 0x00004000
124VM_MASK = 0x00020000
125
126#ifdef CONFIG_PREEMPT
127#define preempt_stop(x) CLI(x)
128#else
129#define preempt_stop(x)
130#define resume_kernel restore_all
131#endif
132
133ENTRY(ret_from_fork)
4127272c 134 pop r0
1da177e4
LT		 135 bl schedule_tail
136 GET_THREAD_INFO(r8)
137 bra syscall_exit
138
139/*
140 * Return to user mode is not as complex as all this looks,
141 * but we want the default path for a system call return to
142 * go as quickly as possible which is why some of this is
143 * less clear than it otherwise should be.
144 */
145
146 ; userspace resumption stub bypassing syscall exit tracing
147 ALIGN
148ret_from_exception:
149 preempt_stop(r4)
150ret_from_intr:
151 ld r4, PSW(sp)
152#ifdef CONFIG_ISA_M32R2
153 and3 r4, r4, #0x8800 ; check BSM and BPM bits
154#else
155 and3 r4, r4, #0x8000 ; check BSM bit
156#endif
157 beqz r4, resume_kernel
158ENTRY(resume_userspace)
159 CLI(r4) ; make sure we don't miss an interrupt
160 ; setting need_resched or sigpending
161 ; between sampling and the iret
162 GET_THREAD_INFO(r8)
163 ld r9, @(TI_FLAGS, r8)
164 and3 r4, r9, #_TIF_WORK_MASK ; is there any work to be done on
165 ; int/exception return?
166 bnez r4, work_pending
167 bra restore_all
168
169#ifdef CONFIG_PREEMPT
170ENTRY(resume_kernel)
171 GET_THREAD_INFO(r8)
172 ld r9, @(TI_PRE_COUNT, r8) ; non-zero preempt_count ?
173 bnez r9, restore_all
174need_resched:
175 ld r9, @(TI_FLAGS, r8) ; need_resched set ?
176 and3 r4, r9, #_TIF_NEED_RESCHED
177 beqz r4, restore_all
178 ld r4, PSW(sp) ; interrupts off (exception path) ?
179 and3 r4, r4, #0x4000
180 beqz r4, restore_all
181 LDIMM (r4, PREEMPT_ACTIVE)
182 st r4, @(TI_PRE_COUNT, r8)
183 STI(r4)
184 bl schedule
185 ldi r4, #0
186 st r4, @(TI_PRE_COUNT, r8)
187 CLI(r4)
188 bra need_resched
189#endif
190
191 ; system call handler stub
192ENTRY(system_call)
193 SWITCH_TO_KERNEL_STACK
194 SAVE_ALL
195 STI(r4) ; Enable interrupt
196 st sp, PTREGS(sp) ; implicit pt_regs parameter
197 cmpui r7, #NR_syscalls
198 bnc syscall_badsys
199 st r7, SYSCALL_NR(sp) ; syscall_nr
200 ; system call tracing in operation
201 GET_THREAD_INFO(r8)
202 ld r9, @(TI_FLAGS, r8)
203 and3 r4, r9, #_TIF_SYSCALL_TRACE
204 bnez r4, syscall_trace_entry
205syscall_call:
206 slli r7, #2 ; table jump for the system call
207 LDIMM (r4, sys_call_table)
208 add r7, r4
209 ld r7, @r7
210 jl r7 ; execute system call
211 st r0, R0(sp) ; save the return value
212syscall_exit:
213 CLI(r4) ; make sure we don't miss an interrupt
214 ; setting need_resched or sigpending
215 ; between sampling and the iret
216 ld r9, @(TI_FLAGS, r8)
217 and3 r4, r9, #_TIF_ALLWORK_MASK ; current->work
218 bnez r4, syscall_exit_work
219restore_all:
220 RESTORE_ALL
221
222 # perform work that needs to be done immediately before resumption
8e8ff02c 223 # r9 : flags
1da177e4
LT		 224 ALIGN
225work_pending:
226 and3 r4, r9, #_TIF_NEED_RESCHED
227 beqz r4, work_notifysig
228work_resched:
229 bl schedule
230 CLI(r4) ; make sure we don't miss an interrupt
231 ; setting need_resched or sigpending
232 ; between sampling and the iret
233 ld r9, @(TI_FLAGS, r8)
234 and3 r4, r9, #_TIF_WORK_MASK ; is there any work to be done other
235 ; than syscall tracing?
236 beqz r4, restore_all
237 and3 r4, r4, #_TIF_NEED_RESCHED
238 bnez r4, work_resched
239
240work_notifysig: ; deal with pending signals and
241 ; notify-resume requests
242 mv r0, sp ; arg1 : struct pt_regs *regs
243 ldi r1, #0 ; arg2 : sigset_t *oldset
244 mv r2, r9 ; arg3 : __u32 thread_info_flags
245 bl do_notify_resume
246 bra restore_all
247
248 ; perform syscall exit tracing
249 ALIGN
250syscall_trace_entry:
251 ldi r4, #-ENOSYS
252 st r4, R0(sp)
253 bl do_syscall_trace
254 ld r0, ORIG_R0(sp)
255 ld r1, R1(sp)
256 ld r2, R2(sp)
257 ld r3, R3(sp)
258 ld r4, R4(sp)
259 ld r5, R5(sp)
260 ld r6, R6(sp)
261 ld r7, SYSCALL_NR(sp)
262 cmpui r7, #NR_syscalls
263 bc syscall_call
264 bra syscall_exit
265
266 ; perform syscall exit tracing
267 ALIGN
268syscall_exit_work:
269 ld r9, @(TI_FLAGS, r8)
270 and3 r4, r9, #_TIF_SYSCALL_TRACE
271 beqz r4, work_pending
272 STI(r4) ; could let do_syscall_trace() call
273 ; schedule() instead
274 bl do_syscall_trace
275 bra resume_userspace
276
277 ALIGN
278syscall_fault:
279 SAVE_ALL
280 GET_THREAD_INFO(r8)
281 ldi r4, #-EFAULT
282 st r4, R0(sp)
283 bra resume_userspace
284
285 ALIGN
286syscall_badsys:
287 ldi r4, #-ENOSYS
288 st r4, R0(sp)
289 bra resume_userspace
290
291 .global eit_vector
292
293 .equ ei_vec_table, eit_vector + 0x0200
294
295/*
296 * EI handler routine
297 */
298ENTRY(ei_handler)
299#if defined(CONFIG_CHIP_M32700)
300 SWITCH_TO_KERNEL_STACK
301 ; WORKAROUND: force to clear SM bit and use the kernel stack (SPI).
302#endif
303 SAVE_ALL
304 mv r1, sp ; arg1(regs)
305#if defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_XNUX2) \
306 || defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_M32102) \
9287d95e 307 || defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104)
1da177e4
LT		 308
309; GET_ICU_STATUS;
310 seth r0, #shigh(M32R_ICU_ISTS_ADDR)
311 ld r0, @(low(M32R_ICU_ISTS_ADDR),r0)
4127272c 312 push r0
1da177e4
LT		 313#if defined(CONFIG_SMP)
314 /*
315 * If IRQ == 0 --> Nothing to do, Not write IMASK
316 * If IRQ == IPI --> Do IPI handler, Not write IMASK
317 * If IRQ != 0, IPI --> Do do_IRQ(), Write IMASK
318 */
319 slli r0, #4
320 srli r0, #24 ; r0(irq_num<<2)
321 ;; IRQ exist check
322#if defined(CONFIG_CHIP_M32700)
323 /* WORKAROUND: IMASK bug M32700-TS1, TS2 chip. */
324 beqz r0, 3f ; if (!irq_num) goto exit
325#else
326 beqz r0, 1f ; if (!irq_num) goto exit
327#endif /* WORKAROUND */
328 ;; IPI check
329 cmpi r0, #(M32R_IRQ_IPI0<<2) ; ISN < IPI0 check
330 bc 2f
331 cmpi r0, #((M32R_IRQ_IPI7+1)<<2) ; ISN > IPI7 check
332 bnc 2f
333 LDIMM (r2, ei_vec_table)
334 add r2, r0
335 ld r2, @r2
336 beqz r2, 1f ; if (no IPI handler) goto exit
337 mv r0, r1 ; arg0(regs)
338 jl r2
339 .fillinsn
3401:
341 addi sp, #4
342 bra ret_to_intr
343#if defined(CONFIG_CHIP_M32700)
344 /* WORKAROUND: IMASK bug M32700-TS1, TS2 chip. */
345 .fillinsn
3463:
347 ld24 r14, #0x00070000
348 seth r0, #shigh(M32R_ICU_IMASK_ADDR)
349 st r14, @(low(M32R_ICU_IMASK_ADDR), r0)
350 addi sp, #4
351 bra ret_to_intr
352#endif /* WORKAROUND */
353 ;; do_IRQ
354 .fillinsn
3552:
356 srli r0, #2
357#if defined(CONFIG_PLAT_USRV)
358 add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
359 bnez r2, 9f
360 ; read ICU status register of PLD
361 seth r0, #high(PLD_ICUISTS)
362 or3 r0, r0, #low(PLD_ICUISTS)
363 lduh r0, @r0
364 slli r0, #21
365 srli r0, #27 ; ISN
366 addi r0, #(M32700UT_PLD_IRQ_BASE)
367 .fillinsn
3689:
369#elif defined(CONFIG_PLAT_M32700UT)
370 add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
371 bnez r2, check_int0
372 ; read ICU status register of PLD
373 seth r0, #high(PLD_ICUISTS)
374 or3 r0, r0, #low(PLD_ICUISTS)
375 lduh r0, @r0
376 slli r0, #21
377 srli r0, #27 ; ISN
378 addi r0, #(M32700UT_PLD_IRQ_BASE)
379 bra check_end
380 .fillinsn
381check_int0:
382 add3 r2, r0, #-(M32R_IRQ_INT0) ; INT0# interrupt
383 bnez r2, check_int2
384 ; read ICU status of LAN-board
385 seth r0, #high(M32700UT_LAN_ICUISTS)
386 or3 r0, r0, #low(M32700UT_LAN_ICUISTS)
387 lduh r0, @r0
388 slli r0, #21
389 srli r0, #27 ; ISN
390 add3 r0, r0, #(M32700UT_LAN_PLD_IRQ_BASE)
391 bra check_end
392 .fillinsn
393check_int2:
394 add3 r2, r0, #-(M32R_IRQ_INT2) ; INT2# interrupt
395 bnez r2, check_end
396 ; read ICU status of LCD-board
397 seth r0, #high(M32700UT_LCD_ICUISTS)
398 or3 r0, r0, #low(M32700UT_LCD_ICUISTS)
399 lduh r0, @r0
400 slli r0, #21
401 srli r0, #27 ; ISN
402 add3 r0, r0, #(M32700UT_LCD_PLD_IRQ_BASE)
403 bra check_end
404 .fillinsn
405check_end:
406#elif defined(CONFIG_PLAT_OPSPUT)
407 add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
408 bnez r2, check_int0
409 ; read ICU status register of PLD
410 seth r0, #high(PLD_ICUISTS)
411 or3 r0, r0, #low(PLD_ICUISTS)
412 lduh r0, @r0
413 slli r0, #21
414 srli r0, #27 ; ISN
415 addi r0, #(OPSPUT_PLD_IRQ_BASE)
416 bra check_end
417 .fillinsn
418check_int0:
419 add3 r2, r0, #-(M32R_IRQ_INT0) ; INT0# interrupt
420 bnez r2, check_int2
421 ; read ICU status of LAN-board
422 seth r0, #high(OPSPUT_LAN_ICUISTS)
423 or3 r0, r0, #low(OPSPUT_LAN_ICUISTS)
424 lduh r0, @r0
425 slli r0, #21
426 srli r0, #27 ; ISN
427 add3 r0, r0, #(OPSPUT_LAN_PLD_IRQ_BASE)
428 bra check_end
429 .fillinsn
430check_int2:
431 add3 r2, r0, #-(M32R_IRQ_INT2) ; INT2# interrupt
432 bnez r2, check_end
433 ; read ICU status of LCD-board
434 seth r0, #high(OPSPUT_LCD_ICUISTS)
435 or3 r0, r0, #low(OPSPUT_LCD_ICUISTS)
436 lduh r0, @r0
437 slli r0, #21
438 srli r0, #27 ; ISN
439 add3 r0, r0, #(OPSPUT_LCD_PLD_IRQ_BASE)
440 bra check_end
441 .fillinsn
442check_end:
443#endif /* CONFIG_PLAT_OPSPUT */
444 bl do_IRQ ; r0(irq), r1(regs)
445#else /* not CONFIG_SMP */
446 srli r0, #22 ; r0(irq)
447#if defined(CONFIG_PLAT_USRV)
448 add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
449 bnez r2, 1f
450 ; read ICU status register of PLD
451 seth r0, #high(PLD_ICUISTS)
452 or3 r0, r0, #low(PLD_ICUISTS)
453 lduh r0, @r0
454 slli r0, #21
455 srli r0, #27 ; ISN
456 addi r0, #(M32700UT_PLD_IRQ_BASE)
457 .fillinsn
4581:
459#elif defined(CONFIG_PLAT_M32700UT)
460 add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
461 bnez r2, check_int0
462 ; read ICU status register of PLD
463 seth r0, #high(PLD_ICUISTS)
464 or3 r0, r0, #low(PLD_ICUISTS)
465 lduh r0, @r0
466 slli r0, #21
467 srli r0, #27 ; ISN
468 addi r0, #(M32700UT_PLD_IRQ_BASE)
469 bra check_end
470 .fillinsn
471check_int0:
472 add3 r2, r0, #-(M32R_IRQ_INT0) ; INT0# interrupt
473 bnez r2, check_int2
474 ; read ICU status of LAN-board
475 seth r0, #high(M32700UT_LAN_ICUISTS)
476 or3 r0, r0, #low(M32700UT_LAN_ICUISTS)
477 lduh r0, @r0
478 slli r0, #21
479 srli r0, #27 ; ISN
480 add3 r0, r0, #(M32700UT_LAN_PLD_IRQ_BASE)
481 bra check_end
482 .fillinsn
483check_int2:
484 add3 r2, r0, #-(M32R_IRQ_INT2) ; INT2# interrupt
485 bnez r2, check_end
486 ; read ICU status of LCD-board
487 seth r0, #high(M32700UT_LCD_ICUISTS)
488 or3 r0, r0, #low(M32700UT_LCD_ICUISTS)
489 lduh r0, @r0
490 slli r0, #21
491 srli r0, #27 ; ISN
492 add3 r0, r0, #(M32700UT_LCD_PLD_IRQ_BASE)
493 bra check_end
494 .fillinsn
495check_end:
496#elif defined(CONFIG_PLAT_OPSPUT)
497 add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
498 bnez r2, check_int0
499 ; read ICU status register of PLD
500 seth r0, #high(PLD_ICUISTS)
501 or3 r0, r0, #low(PLD_ICUISTS)
502 lduh r0, @r0
503 slli r0, #21
504 srli r0, #27 ; ISN
505 addi r0, #(OPSPUT_PLD_IRQ_BASE)
506 bra check_end
507 .fillinsn
508check_int0:
509 add3 r2, r0, #-(M32R_IRQ_INT0) ; INT0# interrupt
510 bnez r2, check_int2
511 ; read ICU status of LAN-board
512 seth r0, #high(OPSPUT_LAN_ICUISTS)
513 or3 r0, r0, #low(OPSPUT_LAN_ICUISTS)
514 lduh r0, @r0
515 slli r0, #21
516 srli r0, #27 ; ISN
517 add3 r0, r0, #(OPSPUT_LAN_PLD_IRQ_BASE)
518 bra check_end
519 .fillinsn
520check_int2:
521 add3 r2, r0, #-(M32R_IRQ_INT2) ; INT2# interrupt
522 bnez r2, check_end
523 ; read ICU status of LCD-board
524 seth r0, #high(OPSPUT_LCD_ICUISTS)
525 or3 r0, r0, #low(OPSPUT_LCD_ICUISTS)
526 lduh r0, @r0
527 slli r0, #21
528 srli r0, #27 ; ISN
529 add3 r0, r0, #(OPSPUT_LCD_PLD_IRQ_BASE)
530 bra check_end
531 .fillinsn
532check_end:
9287d95e
HT		 533#elif defined(CONFIG_PLAT_M32104UT)
534 add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
535 bnez r2, check_end
536 ; read ICU status register of PLD
537 seth r0, #high(PLD_ICUISTS)
538 or3 r0, r0, #low(PLD_ICUISTS)
539 lduh r0, @r0
540 slli r0, #21
541 srli r0, #27 ; ISN
542 addi r0, #(M32104UT_PLD_IRQ_BASE)
543 bra check_end
544 .fillinsn
545check_end:
546#endif /* CONFIG_PLAT_M32104UT */
1da177e4
LT		 547 bl do_IRQ
548#endif /* CONFIG_SMP */
4127272c 549 pop r14
1da177e4
LT		 550 seth r0, #shigh(M32R_ICU_IMASK_ADDR)
551 st r14, @(low(M32R_ICU_IMASK_ADDR),r0)
552#else
553#error no chip configuration
554#endif
555ret_to_intr:
556 bra ret_from_intr
557
558/*
559 * Default EIT handler
560 */
561 ALIGN
562int_msg:
563 .asciz "Unknown interrupt\n"
564 .byte 0
565
566ENTRY(default_eit_handler)
567 push r0
568 mvfc r0, psw
569 push r1
570 push r2
571 push r3
572 push r0
573 LDIMM (r0, __KERNEL_DS)
574 mv r0, r1
575 mv r0, r2
576 LDIMM (r0, int_msg)
577 bl printk
578 pop r0
579 pop r3
580 pop r2
581 pop r1
582 mvtc r0, psw
583 pop r0
584infinit:
585 bra infinit
586
587#ifdef CONFIG_MMU
588/*
589 * Access Exception handler
590 */
591ENTRY(ace_handler)
592 SWITCH_TO_KERNEL_STACK
593 SAVE_ALL
594
595 seth r2, #shigh(MMU_REG_BASE) /* Check status register */
596 ld r4, @(low(MESTS_offset),r2)
597 st r4, @(low(MESTS_offset),r2)
598 srl3 r1, r4, #4
599#ifdef CONFIG_CHIP_M32700
600 and3 r1, r1, #0x0000ffff
601 ; WORKAROUND: ignore TME bit for the M32700(TS1).
602#endif /* CONFIG_CHIP_M32700 */
603 beqz r1, inst
604oprand:
605 ld r2, @(low(MDEVA_offset),r2) ; set address
606 srli r2, #12
607 slli r2, #12
608 srli r1, #1
609 bra 1f
610inst:
611 and3 r1, r4, #2
612 srli r1, #1
613 or3 r1, r1, #8
614 mvfc r2, bpc ; set address
615 .fillinsn
6161:
617 mvfc r3, psw
618 mv r0, sp
619 and3 r3, r3, 0x800
620 srli r3, #9
621 or r1, r3
622 /*
623 * do_page_fault():
624 * r0 : struct pt_regs *regs
625 * r1 : unsigned long error-code
626 * r2 : unsigned long address
627 * error-code:
628 * +------+------+------+------+
629 * | bit3 | bit2 | bit1 | bit0 |
630 * +------+------+------+------+
631 * bit 3 == 0:means data, 1:means instruction
632 * bit 2 == 0:means kernel, 1:means user-mode
633 * bit 1 == 0:means read, 1:means write
634 * bit 0 == 0:means no page found 1:means protection fault
635 *
636 */
637 bl do_page_fault
638 bra ret_from_intr
639#endif /* CONFIG_MMU */
640
641
642ENTRY(alignment_check)
643/* void alignment_check(int error_code) */
644 SWITCH_TO_KERNEL_STACK
645 SAVE_ALL
646 ldi r1, #0x30 ; error_code
647 mv r0, sp ; pt_regs
648 bl do_alignment_check
649error_code:
650 bra ret_from_exception
651
652ENTRY(rie_handler)
653/* void rie_handler(int error_code) */
654 SWITCH_TO_KERNEL_STACK
655 SAVE_ALL
1da177e4
LT		 656 ldi r1, #0x20 ; error_code
657 mv r0, sp ; pt_regs
658 bl do_rie_handler
659 bra error_code
660
661ENTRY(pie_handler)
662/* void pie_handler(int error_code) */
663 SWITCH_TO_KERNEL_STACK
664 SAVE_ALL
665 ldi r1, #0 ; error_code ; FIXME
666 mv r0, sp ; pt_regs
667 bl do_pie_handler
668 bra error_code
669
670ENTRY(debug_trap)
671 .global withdraw_debug_trap
672 /* void debug_trap(void) */
673 SWITCH_TO_KERNEL_STACK
674 SAVE_ALL
675 mv r0, sp ; pt_regs
676 bl withdraw_debug_trap
677 ldi r1, #0 ; error_code
678 mv r0, sp ; pt_regs
679 bl do_debug_trap
680 bra error_code
681
9de11aab
HT		 682ENTRY(ill_trap)
683 /* void ill_trap(void) */
684 SWITCH_TO_KERNEL_STACK
685 SAVE_ALL
686 ldi r1, #0 ; error_code ; FIXME
687 mv r0, sp ; pt_regs
688 bl do_ill_trap
689 bra error_code
690
1da177e4
LT		 691
692/* Cache flushing handler */
693ENTRY(cache_flushing_handler)
694 .global _flush_cache_all
695 /* void _flush_cache_all(void); */
696 SWITCH_TO_KERNEL_STACK
697 push r0
698 push r1
699 push r2
700 push r3
701 push r4
702 push r5
703 push r6
704 push r7
705 push lr
706 bl _flush_cache_all
707 pop lr
708 pop r7
709 pop r6
710 pop r5
711 pop r4
712 pop r3
713 pop r2
714 pop r1
715 pop r0
716 rte
717
718.data
719ENTRY(sys_call_table)
720 .long sys_restart_syscall /* 0 - old "setup()" system call*/
721 .long sys_exit
722 .long sys_fork
723 .long sys_read
724 .long sys_write
725 .long sys_open /* 5 */
726 .long sys_close
727 .long sys_waitpid
728 .long sys_creat
729 .long sys_link
730 .long sys_unlink /* 10 */
731 .long sys_execve
732 .long sys_chdir
733 .long sys_time
734 .long sys_mknod
735 .long sys_chmod /* 15 */
736 .long sys_ni_syscall /* lchown16 syscall holder */
737 .long sys_ni_syscall /* old break syscall holder */
738 .long sys_ni_syscall /* old stat syscall holder */
739 .long sys_lseek
740 .long sys_getpid /* 20 */
741 .long sys_mount
742 .long sys_oldumount
743 .long sys_ni_syscall /* setuid16 syscall holder */
744 .long sys_ni_syscall /* getuid16 syscall holder */
745 .long sys_stime /* 25 */
746 .long sys_ptrace
747 .long sys_alarm
748 .long sys_ni_syscall /* old fstat syscall holder */
749 .long sys_pause
750 .long sys_utime /* 30 */
751 .long sys_ni_syscall /* old stty syscall holder */
752 .long sys_cachectl /* for M32R */ /* old gtty syscall holder */
753 .long sys_access
754 .long sys_ni_syscall /* nice syscall holder */
755 .long sys_ni_syscall /* 35 - old ftime syscall holder */
756 .long sys_sync
757 .long sys_kill
758 .long sys_rename
759 .long sys_mkdir
760 .long sys_rmdir /* 40 */
761 .long sys_dup
762 .long sys_pipe
763 .long sys_times
764 .long sys_ni_syscall /* old prof syscall holder */
765 .long sys_brk /* 45 */
766 .long sys_ni_syscall /* setgid16 syscall holder */
767 .long sys_getgid /* will be unused */
768 .long sys_ni_syscall /* signal syscall holder */
769 .long sys_ni_syscall /* geteuid16 syscall holder */
770 .long sys_ni_syscall /* 50 - getegid16 syscall holder */
771 .long sys_acct
772 .long sys_umount /* recycled never used phys() */
773 .long sys_ni_syscall /* old lock syscall holder */
774 .long sys_ioctl
775 .long sys_fcntl /* 55 - will be unused */
776 .long sys_ni_syscall /* mpx syscall holder */
777 .long sys_setpgid
778 .long sys_ni_syscall /* old ulimit syscall holder */
779 .long sys_ni_syscall /* sys_olduname */
780 .long sys_umask /* 60 */
781 .long sys_chroot
782 .long sys_ustat
783 .long sys_dup2
784 .long sys_getppid
785 .long sys_getpgrp /* 65 */
786 .long sys_setsid
787 .long sys_ni_syscall /* sigaction syscall holder */
788 .long sys_ni_syscall /* sgetmask syscall holder */
789 .long sys_ni_syscall /* ssetmask syscall holder */
790 .long sys_ni_syscall /* 70 - setreuid16 syscall holder */
791 .long sys_ni_syscall /* setregid16 syscall holder */
792 .long sys_ni_syscall /* sigsuspend syscall holder */
793 .long sys_ni_syscall /* sigpending syscall holder */
794 .long sys_sethostname
795 .long sys_setrlimit /* 75 */
796 .long sys_getrlimit/*will be unused*/
797 .long sys_getrusage
798 .long sys_gettimeofday
799 .long sys_settimeofday
800 .long sys_ni_syscall /* 80 - getgroups16 syscall holder */
801 .long sys_ni_syscall /* setgroups16 syscall holder */
802 .long sys_ni_syscall /* sys_oldselect */
803 .long sys_symlink
804 .long sys_ni_syscall /* old lstat syscall holder */
805 .long sys_readlink /* 85 */
806 .long sys_uselib
807 .long sys_swapon
808 .long sys_reboot
809 .long sys_ni_syscall /* readdir syscall holder */
810 .long sys_ni_syscall /* 90 - old_mmap syscall holder */
811 .long sys_munmap
812 .long sys_truncate
813 .long sys_ftruncate
814 .long sys_fchmod
815 .long sys_ni_syscall /* 95 - fchwon16 syscall holder */
816 .long sys_getpriority
817 .long sys_setpriority
818 .long sys_ni_syscall /* old profil syscall holder */
819 .long sys_statfs
820 .long sys_fstatfs /* 100 */
821 .long sys_ni_syscall /* ioperm syscall holder */
822 .long sys_socketcall
823 .long sys_syslog
824 .long sys_setitimer
825 .long sys_getitimer /* 105 */
826 .long sys_newstat
827 .long sys_newlstat
828 .long sys_newfstat
829 .long sys_ni_syscall /* old uname syscall holder */
830 .long sys_ni_syscall /* 110 - iopl syscall holder */
831 .long sys_vhangup
832 .long sys_ni_syscall /* idle syscall holder */
833 .long sys_ni_syscall /* vm86old syscall holder */
834 .long sys_wait4
835 .long sys_swapoff /* 115 */
836 .long sys_sysinfo
837 .long sys_ipc
838 .long sys_fsync
839 .long sys_ni_syscall /* sigreturn syscall holder */
840 .long sys_clone /* 120 */
841 .long sys_setdomainname
842 .long sys_newuname
843 .long sys_ni_syscall /* modify_ldt syscall holder */
844 .long sys_adjtimex
845 .long sys_mprotect /* 125 */
846 .long sys_ni_syscall /* sigprocmask syscall holder */
847 .long sys_ni_syscall /* create_module syscall holder */
848 .long sys_init_module
849 .long sys_delete_module
850 .long sys_ni_syscall /* 130 - get_kernel_syms */
851 .long sys_quotactl
852 .long sys_getpgid
853 .long sys_fchdir
854 .long sys_bdflush
855 .long sys_sysfs /* 135 */
856 .long sys_personality
857 .long sys_ni_syscall /* afs_syscall syscall holder */
858 .long sys_ni_syscall /* setfsuid16 syscall holder */
859 .long sys_ni_syscall /* setfsgid16 syscall holder */
860 .long sys_llseek /* 140 */
861 .long sys_getdents
862 .long sys_select
863 .long sys_flock
864 .long sys_msync
865 .long sys_readv /* 145 */
866 .long sys_writev
867 .long sys_getsid
868 .long sys_fdatasync
869 .long sys_sysctl
870 .long sys_mlock /* 150 */
871 .long sys_munlock
872 .long sys_mlockall
873 .long sys_munlockall
874 .long sys_sched_setparam
875 .long sys_sched_getparam /* 155 */
876 .long sys_sched_setscheduler
877 .long sys_sched_getscheduler
878 .long sys_sched_yield
879 .long sys_sched_get_priority_max
880 .long sys_sched_get_priority_min /* 160 */
881 .long sys_sched_rr_get_interval
882 .long sys_nanosleep
883 .long sys_mremap
884 .long sys_ni_syscall /* setresuid16 syscall holder */
885 .long sys_ni_syscall /* 165 - getresuid16 syscall holder */
886 .long sys_tas /* vm86 syscall holder */
887 .long sys_ni_syscall /* query_module syscall holder */
888 .long sys_poll
889 .long sys_nfsservctl
890 .long sys_setresgid /* 170 */
891 .long sys_getresgid
892 .long sys_prctl
893 .long sys_rt_sigreturn
894 .long sys_rt_sigaction
895 .long sys_rt_sigprocmask /* 175 */
896 .long sys_rt_sigpending
897 .long sys_rt_sigtimedwait
898 .long sys_rt_sigqueueinfo
899 .long sys_rt_sigsuspend
900 .long sys_pread64 /* 180 */
901 .long sys_pwrite64
902 .long sys_ni_syscall /* chown16 syscall holder */
903 .long sys_getcwd
904 .long sys_capget
905 .long sys_capset /* 185 */
906 .long sys_sigaltstack
907 .long sys_sendfile
908 .long sys_ni_syscall /* streams1 */
909 .long sys_ni_syscall /* streams2 */
910 .long sys_vfork /* 190 */
911 .long sys_getrlimit
912 .long sys_mmap2
913 .long sys_truncate64
914 .long sys_ftruncate64
915 .long sys_stat64 /* 195 */
916 .long sys_lstat64
917 .long sys_fstat64
918 .long sys_lchown
919 .long sys_getuid
920 .long sys_getgid /* 200 */
921 .long sys_geteuid
922 .long sys_getegid
923 .long sys_setreuid
924 .long sys_setregid
925 .long sys_getgroups /* 205 */
926 .long sys_setgroups
927 .long sys_fchown
928 .long sys_setresuid
929 .long sys_getresuid
930 .long sys_setresgid /* 210 */
931 .long sys_getresgid
932 .long sys_chown
933 .long sys_setuid
934 .long sys_setgid
935 .long sys_setfsuid /* 215 */
936 .long sys_setfsgid
937 .long sys_pivot_root
938 .long sys_mincore
939 .long sys_madvise
940 .long sys_getdents64 /* 220 */
941 .long sys_fcntl64
942 .long sys_ni_syscall /* reserved for TUX */
943 .long sys_ni_syscall /* Reserved for Security */
944 .long sys_gettid
945 .long sys_readahead /* 225 */
946 .long sys_setxattr
947 .long sys_lsetxattr
948 .long sys_fsetxattr
949 .long sys_getxattr
950 .long sys_lgetxattr /* 230 */
951 .long sys_fgetxattr
952 .long sys_listxattr
953 .long sys_llistxattr
954 .long sys_flistxattr
955 .long sys_removexattr /* 235 */
956 .long sys_lremovexattr
957 .long sys_fremovexattr
958 .long sys_tkill
959 .long sys_sendfile64
960 .long sys_futex /* 240 */
961 .long sys_sched_setaffinity
962 .long sys_sched_getaffinity
963 .long sys_ni_syscall /* reserved for "set_thread_area" system call */
964 .long sys_ni_syscall /* reserved for "get_thread_area" system call */
965 .long sys_io_setup /* 245 */
966 .long sys_io_destroy
967 .long sys_io_getevents
968 .long sys_io_submit
969 .long sys_io_cancel
970 .long sys_fadvise64 /* 250 */
971 .long sys_ni_syscall
972 .long sys_exit_group
973 .long sys_lookup_dcookie
974 .long sys_epoll_create
975 .long sys_epoll_ctl /* 255 */
976 .long sys_epoll_wait
977 .long sys_remap_file_pages
978 .long sys_set_tid_address
979 .long sys_timer_create
980 .long sys_timer_settime /* 260 */
981 .long sys_timer_gettime
982 .long sys_timer_getoverrun
983 .long sys_timer_delete
984 .long sys_clock_settime
985 .long sys_clock_gettime /* 265 */
986 .long sys_clock_getres
987 .long sys_clock_nanosleep
988 .long sys_statfs64
989 .long sys_fstatfs64
990 .long sys_tgkill /* 270 */
991 .long sys_utimes
992 .long sys_fadvise64_64
993 .long sys_ni_syscall /* Reserved for sys_vserver */
994 .long sys_ni_syscall /* Reserved for sys_mbind */
995 .long sys_ni_syscall /* Reserved for sys_get_mempolicy */
996 .long sys_ni_syscall /* Reserved for sys_set_mempolicy */
997 .long sys_mq_open
998 .long sys_mq_unlink
999 .long sys_mq_timedsend
1000 .long sys_mq_timedreceive /* 280 */
1001 .long sys_mq_notify
1002 .long sys_mq_getsetattr
1003 .long sys_ni_syscall /* reserved for kexec */
1004 .long sys_waitid
1005
1006syscall_table_size=(.-sys_call_table)
Clone of davem's net-next-2.6 tree