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[deliverable/linux.git] / arch / frv / kernel / entry.S
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1da177e4
LT		 1/* entry.S: FR-V entry
2 *
3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 *
12 * Entry to the kernel is "interesting":
13 * (1) There are no stack pointers, not even for the kernel
14 * (2) General Registers should not be clobbered
15 * (3) There are no kernel-only data registers
16 * (4) Since all addressing modes are wrt to a General Register, no global
17 * variables can be reached
18 *
19 * We deal with this by declaring that we shall kill GR28 on entering the
20 * kernel from userspace
21 *
22 * However, since break interrupts can interrupt the CPU even when PSR.ET==0,
23 * they can't rely on GR28 to be anything useful, and so need to clobber a
24 * separate register (GR31). Break interrupts are managed in break.S
25 *
26 * GR29 _is_ saved, and holds the current task pointer globally
27 *
28 */
29
30#include <linux/sys.h>
31#include <linux/config.h>
32#include <linux/linkage.h>
33#include <asm/thread_info.h>
34#include <asm/setup.h>
35#include <asm/segment.h>
36#include <asm/ptrace.h>
37#include <asm/errno.h>
38#include <asm/cache.h>
39#include <asm/spr-regs.h>
40
41#define nr_syscalls ((syscall_table_size)/4)
42
43 .text
44 .balign 4
45
46.macro LEDS val
47# sethi.p %hi(0xe1200004),gr30
48# setlo %lo(0xe1200004),gr30
49# setlos #~\val,gr31
50# st gr31,@(gr30,gr0)
51# sethi.p %hi(0xffc00100),gr30
52# setlo %lo(0xffc00100),gr30
53# sth gr0,@(gr30,gr0)
54# membar
55.endm
56
57.macro LEDS32
58# not gr31,gr31
59# sethi.p %hi(0xe1200004),gr30
60# setlo %lo(0xe1200004),gr30
61# st.p gr31,@(gr30,gr0)
62# srli gr31,#16,gr31
63# sethi.p %hi(0xffc00100),gr30
64# setlo %lo(0xffc00100),gr30
65# sth gr31,@(gr30,gr0)
66# membar
67.endm
68
69###############################################################################
70#
71# entry point for External interrupts received whilst executing userspace code
72#
73###############################################################################
74 .globl __entry_uspace_external_interrupt
75 .type __entry_uspace_external_interrupt,@function
76__entry_uspace_external_interrupt:
77 LEDS 0x6200
78 sethi.p %hi(__kernel_frame0_ptr),gr28
79 setlo %lo(__kernel_frame0_ptr),gr28
80 ldi @(gr28,#0),gr28
81
82 # handle h/w single-step through exceptions
83 sti gr0,@(gr28,#REG__STATUS)
84
85 .globl __entry_uspace_external_interrupt_reentry
86__entry_uspace_external_interrupt_reentry:
87 LEDS 0x6201
88
89 setlos #REG__END,gr30
90 dcpl gr28,gr30,#0
91
92 # finish building the exception frame
93 sti sp, @(gr28,#REG_SP)
94 stdi gr2, @(gr28,#REG_GR(2))
95 stdi gr4, @(gr28,#REG_GR(4))
96 stdi gr6, @(gr28,#REG_GR(6))
97 stdi gr8, @(gr28,#REG_GR(8))
98 stdi gr10,@(gr28,#REG_GR(10))
99 stdi gr12,@(gr28,#REG_GR(12))
100 stdi gr14,@(gr28,#REG_GR(14))
101 stdi gr16,@(gr28,#REG_GR(16))
102 stdi gr18,@(gr28,#REG_GR(18))
103 stdi gr20,@(gr28,#REG_GR(20))
104 stdi gr22,@(gr28,#REG_GR(22))
105 stdi gr24,@(gr28,#REG_GR(24))
106 stdi gr26,@(gr28,#REG_GR(26))
107 sti gr0, @(gr28,#REG_GR(28))
108 sti gr29,@(gr28,#REG_GR(29))
109 stdi.p gr30,@(gr28,#REG_GR(30))
110
111 # set up the kernel stack pointer
112 ori gr28,0,sp
113
114 movsg tbr ,gr20
115 movsg psr ,gr22
116 movsg pcsr,gr21
117 movsg isr ,gr23
118 movsg ccr ,gr24
119 movsg cccr,gr25
120 movsg lr ,gr26
121 movsg lcr ,gr27
122
123 setlos.p #-1,gr4
124 andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
125 andi.p gr22,#~(PSR_PS|PSR_S),gr6
126 slli gr5,#1,gr5
127 or gr6,gr5,gr5
128 andi gr5,#~PSR_ET,gr5
129
130 sti gr20,@(gr28,#REG_TBR)
131 sti gr21,@(gr28,#REG_PC)
132 sti gr5 ,@(gr28,#REG_PSR)
133 sti gr23,@(gr28,#REG_ISR)
134 stdi gr24,@(gr28,#REG_CCR)
135 stdi gr26,@(gr28,#REG_LR)
136 sti gr4 ,@(gr28,#REG_SYSCALLNO)
137
138 movsg iacc0h,gr4
139 movsg iacc0l,gr5
140 stdi gr4,@(gr28,#REG_IACC0)
141
142 movsg gner0,gr4
143 movsg gner1,gr5
28baebae
DH		 144 stdi.p gr4,@(gr28,#REG_GNER0)
145
146 # interrupts start off fully disabled in the interrupt handler
147 subcc gr0,gr0,gr0,icc2 /* set Z and clear C */
1da177e4
LT		 148
149 # set up kernel global registers
150 sethi.p %hi(__kernel_current_task),gr5
151 setlo %lo(__kernel_current_task),gr5
152 sethi.p %hi(_gp),gr16
153 setlo %lo(_gp),gr16
154 ldi @(gr5,#0),gr29
155 ldi.p @(gr29,#4),gr15 ; __current_thread_info = current->thread_info
156
157 # make sure we (the kernel) get div-zero and misalignment exceptions
158 setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
159 movgs gr5,isr
160
161 # switch to the kernel trap table
162 sethi.p %hi(__entry_kerneltrap_table),gr6
163 setlo %lo(__entry_kerneltrap_table),gr6
164 movgs gr6,tbr
165
166 # set the return address
167 sethi.p %hi(__entry_return_from_user_interrupt),gr4
168 setlo %lo(__entry_return_from_user_interrupt),gr4
169 movgs gr4,lr
170
171 # raise the minimum interrupt priority to 15 (NMI only) and enable exceptions
172 movsg psr,gr4
173
174 ori gr4,#PSR_PIL_14,gr4
175 movgs gr4,psr
176 ori gr4,#PSR_PIL_14|PSR_ET,gr4
177 movgs gr4,psr
178
179 LEDS 0x6202
180 bra do_IRQ
181
182 .size __entry_uspace_external_interrupt,.-__entry_uspace_external_interrupt
183
184###############################################################################
185#
186# entry point for External interrupts received whilst executing kernel code
187# - on arriving here, the following registers should already be set up:
188# GR15 - current thread_info struct pointer
189# GR16 - kernel GP-REL pointer
190# GR29 - current task struct pointer
191# TBR - kernel trap vector table
192# ISR - kernel's preferred integer controls
193#
194###############################################################################
195 .globl __entry_kernel_external_interrupt
196 .type __entry_kernel_external_interrupt,@function
197__entry_kernel_external_interrupt:
198 LEDS 0x6210
28baebae
DH		 199// sub sp,gr15,gr31
200// LEDS32
1da177e4
LT		 201
202 # set up the stack pointer
203 or.p sp,gr0,gr30
204 subi sp,#REG__END,sp
205 sti gr30,@(sp,#REG_SP)
206
207 # handle h/w single-step through exceptions
208 sti gr0,@(sp,#REG__STATUS)
209
210 .globl __entry_kernel_external_interrupt_reentry
211__entry_kernel_external_interrupt_reentry:
212 LEDS 0x6211
213
214 # set up the exception frame
215 setlos #REG__END,gr30
216 dcpl sp,gr30,#0
217
218 sti.p gr28,@(sp,#REG_GR(28))
219 ori sp,0,gr28
220
221 # finish building the exception frame
222 stdi gr2,@(gr28,#REG_GR(2))
223 stdi gr4,@(gr28,#REG_GR(4))
224 stdi gr6,@(gr28,#REG_GR(6))
225 stdi gr8,@(gr28,#REG_GR(8))
226 stdi gr10,@(gr28,#REG_GR(10))
227 stdi gr12,@(gr28,#REG_GR(12))
228 stdi gr14,@(gr28,#REG_GR(14))
229 stdi gr16,@(gr28,#REG_GR(16))
230 stdi gr18,@(gr28,#REG_GR(18))
231 stdi gr20,@(gr28,#REG_GR(20))
232 stdi gr22,@(gr28,#REG_GR(22))
233 stdi gr24,@(gr28,#REG_GR(24))
234 stdi gr26,@(gr28,#REG_GR(26))
235 sti gr29,@(gr28,#REG_GR(29))
28baebae
DH		 236 stdi.p gr30,@(gr28,#REG_GR(30))
237
238 # note virtual interrupts will be fully enabled upon return
239 subicc gr0,#1,gr0,icc2 /* clear Z, set C */
1da177e4
LT		 240
241 movsg tbr ,gr20
242 movsg psr ,gr22
243 movsg pcsr,gr21
244 movsg isr ,gr23
245 movsg ccr ,gr24
246 movsg cccr,gr25
247 movsg lr ,gr26
248 movsg lcr ,gr27
249
250 setlos.p #-1,gr4
251 andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
252 andi.p gr22,#~(PSR_PS|PSR_S),gr6
253 slli gr5,#1,gr5
254 or gr6,gr5,gr5
255 andi.p gr5,#~PSR_ET,gr5
256
257 # set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel
258 # - for an explanation of how it works, see: Documentation/fujitsu/frv/atomic-ops.txt
259 andi gr25,#~0xc0,gr25
260
261 sti gr20,@(gr28,#REG_TBR)
262 sti gr21,@(gr28,#REG_PC)
263 sti gr5 ,@(gr28,#REG_PSR)
264 sti gr23,@(gr28,#REG_ISR)
265 stdi gr24,@(gr28,#REG_CCR)
266 stdi gr26,@(gr28,#REG_LR)
267 sti gr4 ,@(gr28,#REG_SYSCALLNO)
268
269 movsg iacc0h,gr4
270 movsg iacc0l,gr5
271 stdi gr4,@(gr28,#REG_IACC0)
272
273 movsg gner0,gr4
274 movsg gner1,gr5
28baebae
DH		 275 stdi.p gr4,@(gr28,#REG_GNER0)
276
277 # interrupts start off fully disabled in the interrupt handler
278 subcc gr0,gr0,gr0,icc2 /* set Z and clear C */
1da177e4
LT		 279
280 # set the return address
281 sethi.p %hi(__entry_return_from_kernel_interrupt),gr4
282 setlo %lo(__entry_return_from_kernel_interrupt),gr4
283 movgs gr4,lr
284
285 # clear power-saving mode flags
286 movsg hsr0,gr4
287 andi gr4,#~HSR0_PDM,gr4
288 movgs gr4,hsr0
289
290 # raise the minimum interrupt priority to 15 (NMI only) and enable exceptions
291 movsg psr,gr4
292 ori gr4,#PSR_PIL_14,gr4
293 movgs gr4,psr
294 ori gr4,#PSR_ET,gr4
295 movgs gr4,psr
296
297 LEDS 0x6212
298 bra do_IRQ
299
300 .size __entry_kernel_external_interrupt,.-__entry_kernel_external_interrupt
301
28baebae
DH		 302###############################################################################
303#
304# deal with interrupts that were actually virtually disabled
305# - we need to really disable them, flag the fact and return immediately
306# - if you change this, you must alter break.S also
307#
308###############################################################################
309 .balign L1_CACHE_BYTES
310 .globl __entry_kernel_external_interrupt_virtually_disabled
311 .type __entry_kernel_external_interrupt_virtually_disabled,@function
312__entry_kernel_external_interrupt_virtually_disabled:
313 movsg psr,gr30
314 andi gr30,#~PSR_PIL,gr30
315 ori gr30,#PSR_PIL_14,gr30 ; debugging interrupts only
316 movgs gr30,psr
317 subcc gr0,gr0,gr0,icc2 ; leave Z set, clear C
318 rett #0
319
320 .size __entry_kernel_external_interrupt_virtually_disabled,.-__entry_kernel_external_interrupt_virtually_disabled
321
322###############################################################################
323#
324# deal with re-enablement of interrupts that were pending when virtually re-enabled
325# - set ICC2.C, re-enable the real interrupts and return
326# - we can clear ICC2.Z because we shouldn't be here if it's not 0 [due to TIHI]
327# - if you change this, you must alter break.S also
328#
329###############################################################################
330 .balign L1_CACHE_BYTES
331 .globl __entry_kernel_external_interrupt_virtual_reenable
332 .type __entry_kernel_external_interrupt_virtual_reenable,@function
333__entry_kernel_external_interrupt_virtual_reenable:
334 movsg psr,gr30
335 andi gr30,#~PSR_PIL,gr30 ; re-enable interrupts
336 movgs gr30,psr
337 subicc gr0,#1,gr0,icc2 ; clear Z, set C
338 rett #0
339
340 .size __entry_kernel_external_interrupt_virtual_reenable,.-__entry_kernel_external_interrupt_virtual_reenable
1da177e4
LT		 341
342###############################################################################
343#
344# entry point for Software and Progam interrupts generated whilst executing userspace code
345#
346###############################################################################
347 .globl __entry_uspace_softprog_interrupt
348 .type __entry_uspace_softprog_interrupt,@function
349 .globl __entry_uspace_handle_mmu_fault
350__entry_uspace_softprog_interrupt:
351 LEDS 0x6000
352#ifdef CONFIG_MMU
353 movsg ear0,gr28
354__entry_uspace_handle_mmu_fault:
355 movgs gr28,scr2
356#endif
357 sethi.p %hi(__kernel_frame0_ptr),gr28
358 setlo %lo(__kernel_frame0_ptr),gr28
359 ldi @(gr28,#0),gr28
360
361 # handle h/w single-step through exceptions
362 sti gr0,@(gr28,#REG__STATUS)
363
364 .globl __entry_uspace_softprog_interrupt_reentry
365__entry_uspace_softprog_interrupt_reentry:
366 LEDS 0x6001
367
368 setlos #REG__END,gr30
369 dcpl gr28,gr30,#0
370
371 # set up the kernel stack pointer
372 sti.p sp,@(gr28,#REG_SP)
373 ori gr28,0,sp
374 sti gr0,@(gr28,#REG_GR(28))
375
376 stdi gr20,@(gr28,#REG_GR(20))
377 stdi gr22,@(gr28,#REG_GR(22))
378
379 movsg tbr,gr20
380 movsg pcsr,gr21
381 movsg psr,gr22
382
383 sethi.p %hi(__entry_return_from_user_exception),gr23
384 setlo %lo(__entry_return_from_user_exception),gr23
28baebae 385
1da177e4
LT		 386 bra __entry_common
387
388 .size __entry_uspace_softprog_interrupt,.-__entry_uspace_softprog_interrupt
389
390 # single-stepping was disabled on entry to a TLB handler that then faulted
391#ifdef CONFIG_MMU
392 .globl __entry_uspace_handle_mmu_fault_sstep
393__entry_uspace_handle_mmu_fault_sstep:
394 movgs gr28,scr2
395 sethi.p %hi(__kernel_frame0_ptr),gr28
396 setlo %lo(__kernel_frame0_ptr),gr28
397 ldi @(gr28,#0),gr28
398
399 # flag single-step re-enablement
400 sti gr0,@(gr28,#REG__STATUS)
401 bra __entry_uspace_softprog_interrupt_reentry
402#endif
403
404
405###############################################################################
406#
407# entry point for Software and Progam interrupts generated whilst executing kernel code
408#
409###############################################################################
410 .globl __entry_kernel_softprog_interrupt
411 .type __entry_kernel_softprog_interrupt,@function
412__entry_kernel_softprog_interrupt:
413 LEDS 0x6004
414
415#ifdef CONFIG_MMU
416 movsg ear0,gr30
417 movgs gr30,scr2
418#endif
419
420 .globl __entry_kernel_handle_mmu_fault
421__entry_kernel_handle_mmu_fault:
422 # set up the stack pointer
423 subi sp,#REG__END,sp
424 sti sp,@(sp,#REG_SP)
425 sti sp,@(sp,#REG_SP-4)
426 andi sp,#~7,sp
427
428 # handle h/w single-step through exceptions
429 sti gr0,@(sp,#REG__STATUS)
430
431 .globl __entry_kernel_softprog_interrupt_reentry
432__entry_kernel_softprog_interrupt_reentry:
433 LEDS 0x6005
434
435 setlos #REG__END,gr30
436 dcpl sp,gr30,#0
437
438 # set up the exception frame
439 sti.p gr28,@(sp,#REG_GR(28))
440 ori sp,0,gr28
441
442 stdi gr20,@(gr28,#REG_GR(20))
443 stdi gr22,@(gr28,#REG_GR(22))
444
445 ldi @(sp,#REG_SP),gr22 /* reconstruct the old SP */
446 addi gr22,#REG__END,gr22
447 sti gr22,@(sp,#REG_SP)
448
449 # set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel
450 # - for an explanation of how it works, see: Documentation/fujitsu/frv/atomic-ops.txt
451 movsg cccr,gr20
452 andi gr20,#~0xc0,gr20
453 movgs gr20,cccr
454
455 movsg tbr,gr20
456 movsg pcsr,gr21
457 movsg psr,gr22
458
459 sethi.p %hi(__entry_return_from_kernel_exception),gr23
460 setlo %lo(__entry_return_from_kernel_exception),gr23
461 bra __entry_common
462
463 .size __entry_kernel_softprog_interrupt,.-__entry_kernel_softprog_interrupt
464
465 # single-stepping was disabled on entry to a TLB handler that then faulted
466#ifdef CONFIG_MMU
467 .globl __entry_kernel_handle_mmu_fault_sstep
468__entry_kernel_handle_mmu_fault_sstep:
469 # set up the stack pointer
470 subi sp,#REG__END,sp
471 sti sp,@(sp,#REG_SP)
472 sti sp,@(sp,#REG_SP-4)
473 andi sp,#~7,sp
474
475 # flag single-step re-enablement
476 sethi #REG__STATUS_STEP,gr30
477 sti gr30,@(sp,#REG__STATUS)
478 bra __entry_kernel_softprog_interrupt_reentry
479#endif
480
481
482###############################################################################
483#
484# the rest of the kernel entry point code
485# - on arriving here, the following registers should be set up:
486# GR1 - kernel stack pointer
487# GR7 - syscall number (trap 0 only)
488# GR8-13 - syscall args (trap 0 only)
489# GR20 - saved TBR
490# GR21 - saved PC
491# GR22 - saved PSR
492# GR23 - return handler address
493# GR28 - exception frame on stack
494# SCR2 - saved EAR0 where applicable (clobbered by ICI & ICEF insns on FR451)
495# PSR - PSR.S 1, PSR.ET 0
496#
497###############################################################################
498 .globl __entry_common
499 .type __entry_common,@function
500__entry_common:
501 LEDS 0x6008
502
503 # finish building the exception frame
504 stdi gr2,@(gr28,#REG_GR(2))
505 stdi gr4,@(gr28,#REG_GR(4))
506 stdi gr6,@(gr28,#REG_GR(6))
507 stdi gr8,@(gr28,#REG_GR(8))
508 stdi gr10,@(gr28,#REG_GR(10))
509 stdi gr12,@(gr28,#REG_GR(12))
510 stdi gr14,@(gr28,#REG_GR(14))
511 stdi gr16,@(gr28,#REG_GR(16))
512 stdi gr18,@(gr28,#REG_GR(18))
513 stdi gr24,@(gr28,#REG_GR(24))
514 stdi gr26,@(gr28,#REG_GR(26))
515 sti gr29,@(gr28,#REG_GR(29))
516 stdi gr30,@(gr28,#REG_GR(30))
517
518 movsg lcr ,gr27
519 movsg lr ,gr26
520 movgs gr23,lr
521 movsg cccr,gr25
522 movsg ccr ,gr24
523 movsg isr ,gr23
524
525 setlos.p #-1,gr4
526 andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
527 andi.p gr22,#~(PSR_PS|PSR_S),gr6
528 slli gr5,#1,gr5
529 or gr6,gr5,gr5
530 andi gr5,#~PSR_ET,gr5
531
532 sti gr20,@(gr28,#REG_TBR)
533 sti gr21,@(gr28,#REG_PC)
534 sti gr5 ,@(gr28,#REG_PSR)
535 sti gr23,@(gr28,#REG_ISR)
536 stdi gr24,@(gr28,#REG_CCR)
537 stdi gr26,@(gr28,#REG_LR)
538 sti gr4 ,@(gr28,#REG_SYSCALLNO)
539
540 movsg iacc0h,gr4
541 movsg iacc0l,gr5
542 stdi gr4,@(gr28,#REG_IACC0)
543
544 movsg gner0,gr4
545 movsg gner1,gr5
28baebae
DH		 546 stdi.p gr4,@(gr28,#REG_GNER0)
547
548 # set up virtual interrupt disablement
549 subicc gr0,#1,gr0,icc2 /* clear Z flag, set C flag */
1da177e4
LT		 550
551 # set up kernel global registers
552 sethi.p %hi(__kernel_current_task),gr5
553 setlo %lo(__kernel_current_task),gr5
554 sethi.p %hi(_gp),gr16
555 setlo %lo(_gp),gr16
556 ldi @(gr5,#0),gr29
557 ldi @(gr29,#4),gr15 ; __current_thread_info = current->thread_info
558
559 # switch to the kernel trap table
560 sethi.p %hi(__entry_kerneltrap_table),gr6
561 setlo %lo(__entry_kerneltrap_table),gr6
562 movgs gr6,tbr
563
564 # make sure we (the kernel) get div-zero and misalignment exceptions
565 setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
566 movgs gr5,isr
567
568 # clear power-saving mode flags
569 movsg hsr0,gr4
570 andi gr4,#~HSR0_PDM,gr4
571 movgs gr4,hsr0
572
573 # multiplex again using old TBR as a guide
574 setlos.p #TBR_TT,gr3
575 sethi %hi(__entry_vector_table),gr6
576 and.p gr20,gr3,gr5
577 setlo %lo(__entry_vector_table),gr6
578 srli gr5,#2,gr5
579 ld @(gr5,gr6),gr5
580
581 LEDS 0x6009
582 jmpl @(gr5,gr0)
583
584
585 .size __entry_common,.-__entry_common
586
587###############################################################################
588#
589# handle instruction MMU fault
590#
591###############################################################################
592#ifdef CONFIG_MMU
593 .globl __entry_insn_mmu_fault
594__entry_insn_mmu_fault:
595 LEDS 0x6010
596 setlos #0,gr8
597 movsg esr0,gr9
598 movsg scr2,gr10
599
600 # now that we've accessed the exception regs, we can enable exceptions
601 movsg psr,gr4
602 ori gr4,#PSR_ET,gr4
603 movgs gr4,psr
604
605 sethi.p %hi(do_page_fault),gr5
606 setlo %lo(do_page_fault),gr5
607 jmpl @(gr5,gr0) ; call do_page_fault(0,esr0,ear0)
608#endif
609
610
611###############################################################################
612#
613# handle instruction access error
614#
615###############################################################################
616 .globl __entry_insn_access_error
617__entry_insn_access_error:
618 LEDS 0x6011
619 sethi.p %hi(insn_access_error),gr5
620 setlo %lo(insn_access_error),gr5
621 movsg esfr1,gr8
622 movsg epcr0,gr9
623 movsg esr0,gr10
624
625 # now that we've accessed the exception regs, we can enable exceptions
626 movsg psr,gr4
627 ori gr4,#PSR_ET,gr4
628 movgs gr4,psr
629 jmpl @(gr5,gr0) ; call insn_access_error(esfr1,epcr0,esr0)
630
631###############################################################################
632#
633# handle various instructions of dubious legality
634#
635###############################################################################
636 .globl __entry_unsupported_trap
637 .globl __entry_illegal_instruction
638 .globl __entry_privileged_instruction
639 .globl __entry_debug_exception
640__entry_unsupported_trap:
641 subi gr21,#4,gr21
642 sti gr21,@(gr28,#REG_PC)
643__entry_illegal_instruction:
644__entry_privileged_instruction:
645__entry_debug_exception:
646 LEDS 0x6012
647 sethi.p %hi(illegal_instruction),gr5
648 setlo %lo(illegal_instruction),gr5
649 movsg esfr1,gr8
650 movsg epcr0,gr9
651 movsg esr0,gr10
652
653 # now that we've accessed the exception regs, we can enable exceptions
654 movsg psr,gr4
655 ori gr4,#PSR_ET,gr4
656 movgs gr4,psr
657 jmpl @(gr5,gr0) ; call ill_insn(esfr1,epcr0,esr0)
658
659###############################################################################
660#
661# handle media exception
662#
663###############################################################################
664 .globl __entry_media_exception
665__entry_media_exception:
666 LEDS 0x6013
667 sethi.p %hi(media_exception),gr5
668 setlo %lo(media_exception),gr5
669 movsg msr0,gr8
670 movsg msr1,gr9
671
672 # now that we've accessed the exception regs, we can enable exceptions
673 movsg psr,gr4
674 ori gr4,#PSR_ET,gr4
675 movgs gr4,psr
676 jmpl @(gr5,gr0) ; call media_excep(msr0,msr1)
677
678###############################################################################
679#
680# handle data MMU fault
681# handle data DAT fault (write-protect exception)
682#
683###############################################################################
684#ifdef CONFIG_MMU
685 .globl __entry_data_mmu_fault
686__entry_data_mmu_fault:
687 .globl __entry_data_dat_fault
688__entry_data_dat_fault:
689 LEDS 0x6014
690 setlos #1,gr8
691 movsg esr0,gr9
692 movsg scr2,gr10 ; saved EAR0
693
694 # now that we've accessed the exception regs, we can enable exceptions
695 movsg psr,gr4
696 ori gr4,#PSR_ET,gr4
697 movgs gr4,psr
698
699 sethi.p %hi(do_page_fault),gr5
700 setlo %lo(do_page_fault),gr5
701 jmpl @(gr5,gr0) ; call do_page_fault(1,esr0,ear0)
702#endif
703
704###############################################################################
705#
706# handle data and instruction access exceptions
707#
708###############################################################################
709 .globl __entry_insn_access_exception
710 .globl __entry_data_access_exception
711__entry_insn_access_exception:
712__entry_data_access_exception:
713 LEDS 0x6016
714 sethi.p %hi(memory_access_exception),gr5
715 setlo %lo(memory_access_exception),gr5
716 movsg esr0,gr8
717 movsg scr2,gr9 ; saved EAR0
718 movsg epcr0,gr10
719
720 # now that we've accessed the exception regs, we can enable exceptions
721 movsg psr,gr4
722 ori gr4,#PSR_ET,gr4
723 movgs gr4,psr
724 jmpl @(gr5,gr0) ; call memory_access_error(esr0,ear0,epcr0)
725
726###############################################################################
727#
728# handle data access error
729#
730###############################################################################
731 .globl __entry_data_access_error
732__entry_data_access_error:
733 LEDS 0x6016
734 sethi.p %hi(data_access_error),gr5
735 setlo %lo(data_access_error),gr5
736 movsg esfr1,gr8
737 movsg esr15,gr9
738 movsg ear15,gr10
739
740 # now that we've accessed the exception regs, we can enable exceptions
741 movsg psr,gr4
742 ori gr4,#PSR_ET,gr4
743 movgs gr4,psr
744 jmpl @(gr5,gr0) ; call data_access_error(esfr1,esr15,ear15)
745
746###############################################################################
747#
748# handle data store error
749#
750###############################################################################
751 .globl __entry_data_store_error
752__entry_data_store_error:
753 LEDS 0x6017
754 sethi.p %hi(data_store_error),gr5
755 setlo %lo(data_store_error),gr5
756 movsg esfr1,gr8
757 movsg esr14,gr9
758
759 # now that we've accessed the exception regs, we can enable exceptions
760 movsg psr,gr4
761 ori gr4,#PSR_ET,gr4
762 movgs gr4,psr
763 jmpl @(gr5,gr0) ; call data_store_error(esfr1,esr14)
764
765###############################################################################
766#
767# handle division exception
768#
769###############################################################################
770 .globl __entry_division_exception
771__entry_division_exception:
772 LEDS 0x6018
773 sethi.p %hi(division_exception),gr5
774 setlo %lo(division_exception),gr5
775 movsg esfr1,gr8
776 movsg esr0,gr9
777 movsg isr,gr10
778
779 # now that we've accessed the exception regs, we can enable exceptions
780 movsg psr,gr4
781 ori gr4,#PSR_ET,gr4
782 movgs gr4,psr
783 jmpl @(gr5,gr0) ; call div_excep(esfr1,esr0,isr)
784
785###############################################################################
786#
787# handle compound exception
788#
789###############################################################################
790 .globl __entry_compound_exception
791__entry_compound_exception:
792 LEDS 0x6019
793 sethi.p %hi(compound_exception),gr5
794 setlo %lo(compound_exception),gr5
795 movsg esfr1,gr8
796 movsg esr0,gr9
797 movsg esr14,gr10
798 movsg esr15,gr11
799 movsg msr0,gr12
800 movsg msr1,gr13
801
802 # now that we've accessed the exception regs, we can enable exceptions
803 movsg psr,gr4
804 ori gr4,#PSR_ET,gr4
805 movgs gr4,psr
806 jmpl @(gr5,gr0) ; call comp_excep(esfr1,esr0,esr14,esr15,msr0,msr1)
807
808###############################################################################
809#
810# handle interrupts and NMIs
811#
812###############################################################################
813 .globl __entry_do_IRQ
814__entry_do_IRQ:
815 LEDS 0x6020
816
817 # we can enable exceptions
818 movsg psr,gr4
819 ori gr4,#PSR_ET,gr4
820 movgs gr4,psr
821 bra do_IRQ
822
823 .globl __entry_do_NMI
824__entry_do_NMI:
825 LEDS 0x6021
826
827 # we can enable exceptions
828 movsg psr,gr4
829 ori gr4,#PSR_ET,gr4
830 movgs gr4,psr
831 bra do_NMI
832
833###############################################################################
834#
835# the return path for a newly forked child process
836# - __switch_to() saved the old current pointer in GR8 for us
837#
838###############################################################################
839 .globl ret_from_fork
840ret_from_fork:
841 LEDS 0x6100
842 call schedule_tail
843
844 # fork & co. return 0 to child
845 setlos.p #0,gr8
846 bra __syscall_exit
847
848###################################################################################################
849#
850# Return to user mode is not as complex as all this looks,
851# but we want the default path for a system call return to
852# go as quickly as possible which is why some of this is
853# less clear than it otherwise should be.
854#
855###################################################################################################
856 .balign L1_CACHE_BYTES
857 .globl system_call
858system_call:
859 LEDS 0x6101
860 movsg psr,gr4 ; enable exceptions
861 ori gr4,#PSR_ET,gr4
862 movgs gr4,psr
863
864 sti gr7,@(gr28,#REG_SYSCALLNO)
865 sti.p gr8,@(gr28,#REG_ORIG_GR8)
866
867 subicc gr7,#nr_syscalls,gr0,icc0
868 bnc icc0,#0,__syscall_badsys
869
870 ldi @(gr15,#TI_FLAGS),gr4
871 ori gr4,#_TIF_SYSCALL_TRACE,gr4
872 andicc gr4,#_TIF_SYSCALL_TRACE,gr0,icc0
873 bne icc0,#0,__syscall_trace_entry
874
875__syscall_call:
876 slli.p gr7,#2,gr7
877 sethi %hi(sys_call_table),gr5
878 setlo %lo(sys_call_table),gr5
879 ld @(gr5,gr7),gr4
880 calll @(gr4,gr0)
881
882
883###############################################################################
884#
885# return to interrupted process
886#
887###############################################################################
888__syscall_exit:
889 LEDS 0x6300
890
891 sti gr8,@(gr28,#REG_GR(8)) ; save return value
892
893 # rebuild saved psr - execve will change it for init/main.c
894 ldi @(gr28,#REG_PSR),gr22
895 srli gr22,#1,gr5
896 andi.p gr22,#~PSR_PS,gr22
897 andi gr5,#PSR_PS,gr5
898 or gr5,gr22,gr22
899 ori gr22,#PSR_S,gr22
900
901 # keep current PSR in GR23
902 movsg psr,gr23
903
904 # make sure we don't miss an interrupt setting need_resched or sigpending between
905 # sampling and the RETT
906 ori gr23,#PSR_PIL_14,gr23
907 movgs gr23,psr
908
909 ldi @(gr15,#TI_FLAGS),gr4
910 sethi.p %hi(_TIF_ALLWORK_MASK),gr5
911 setlo %lo(_TIF_ALLWORK_MASK),gr5
912 andcc gr4,gr5,gr0,icc0
913 bne icc0,#0,__syscall_exit_work
914
915 # restore all registers and return
916__entry_return_direct:
917 LEDS 0x6301
918
919 andi gr22,#~PSR_ET,gr22
920 movgs gr22,psr
921
922 ldi @(gr28,#REG_ISR),gr23
923 lddi @(gr28,#REG_CCR),gr24
924 lddi @(gr28,#REG_LR) ,gr26
925 ldi @(gr28,#REG_PC) ,gr21
926 ldi @(gr28,#REG_TBR),gr20
927
928 movgs gr20,tbr
929 movgs gr21,pcsr
930 movgs gr23,isr
931 movgs gr24,ccr
932 movgs gr25,cccr
933 movgs gr26,lr
934 movgs gr27,lcr
935
936 lddi @(gr28,#REG_GNER0),gr4
937 movgs gr4,gner0
938 movgs gr5,gner1
939
940 lddi @(gr28,#REG_IACC0),gr4
941 movgs gr4,iacc0h
942 movgs gr5,iacc0l
943
944 lddi @(gr28,#REG_GR(4)) ,gr4
945 lddi @(gr28,#REG_GR(6)) ,gr6
946 lddi @(gr28,#REG_GR(8)) ,gr8
947 lddi @(gr28,#REG_GR(10)),gr10
948 lddi @(gr28,#REG_GR(12)),gr12
949 lddi @(gr28,#REG_GR(14)),gr14
950 lddi @(gr28,#REG_GR(16)),gr16
951 lddi @(gr28,#REG_GR(18)),gr18
952 lddi @(gr28,#REG_GR(20)),gr20
953 lddi @(gr28,#REG_GR(22)),gr22
954 lddi @(gr28,#REG_GR(24)),gr24
955 lddi @(gr28,#REG_GR(26)),gr26
956 ldi @(gr28,#REG_GR(29)),gr29
957 lddi @(gr28,#REG_GR(30)),gr30
958
959 # check to see if a debugging return is required
960 LEDS 0x67f0
961 movsg ccr,gr2
962 ldi @(gr28,#REG__STATUS),gr3
963 andicc gr3,#REG__STATUS_STEP,gr0,icc0
964 bne icc0,#0,__entry_return_singlestep
965 movgs gr2,ccr
966
967 ldi @(gr28,#REG_SP) ,sp
968 lddi @(gr28,#REG_GR(2)) ,gr2
969 ldi @(gr28,#REG_GR(28)),gr28
970
971 LEDS 0x67fe
972// movsg pcsr,gr31
973// LEDS32
974
975#if 0
976 # store the current frame in the workram on the FR451
977 movgs gr28,scr2
978 sethi.p %hi(0xfe800000),gr28
979 setlo %lo(0xfe800000),gr28
980
981 stdi gr2,@(gr28,#REG_GR(2))
982 stdi gr4,@(gr28,#REG_GR(4))
983 stdi gr6,@(gr28,#REG_GR(6))
984 stdi gr8,@(gr28,#REG_GR(8))
985 stdi gr10,@(gr28,#REG_GR(10))
986 stdi gr12,@(gr28,#REG_GR(12))
987 stdi gr14,@(gr28,#REG_GR(14))
988 stdi gr16,@(gr28,#REG_GR(16))
989 stdi gr18,@(gr28,#REG_GR(18))
990 stdi gr24,@(gr28,#REG_GR(24))
991 stdi gr26,@(gr28,#REG_GR(26))
992 sti gr29,@(gr28,#REG_GR(29))
993 stdi gr30,@(gr28,#REG_GR(30))
994
995 movsg tbr ,gr30
996 sti gr30,@(gr28,#REG_TBR)
997 movsg pcsr,gr30
998 sti gr30,@(gr28,#REG_PC)
999 movsg psr ,gr30
1000 sti gr30,@(gr28,#REG_PSR)
1001 movsg isr ,gr30
1002 sti gr30,@(gr28,#REG_ISR)
1003 movsg ccr ,gr30
1004 movsg cccr,gr31
1005 stdi gr30,@(gr28,#REG_CCR)
1006 movsg lr ,gr30
1007 movsg lcr ,gr31
1008 stdi gr30,@(gr28,#REG_LR)
1009 sti gr0 ,@(gr28,#REG_SYSCALLNO)
1010 movsg scr2,gr28
1011#endif
1012
1013 rett #0
1014
1015 # return via break.S
1016__entry_return_singlestep:
1017 movgs gr2,ccr
1018 lddi @(gr28,#REG_GR(2)) ,gr2
1019 ldi @(gr28,#REG_SP) ,sp
1020 ldi @(gr28,#REG_GR(28)),gr28
1021 LEDS 0x67ff
1022 break
1023 .globl __entry_return_singlestep_breaks_here
1024__entry_return_singlestep_breaks_here:
1025 nop
1026
1027
1028###############################################################################
1029#
1030# return to a process interrupted in kernel space
1031# - we need to consider preemption if that is enabled
1032#
1033###############################################################################
1034 .balign L1_CACHE_BYTES
1035__entry_return_from_kernel_exception:
1036 LEDS 0x6302
1037 movsg psr,gr23
1038 ori gr23,#PSR_PIL_14,gr23
1039 movgs gr23,psr
1040 bra __entry_return_direct
1041
1042 .balign L1_CACHE_BYTES
1043__entry_return_from_kernel_interrupt:
1044 LEDS 0x6303
1045 movsg psr,gr23
1046 ori gr23,#PSR_PIL_14,gr23
1047 movgs gr23,psr
1048
1049#ifdef CONFIG_PREEMPT
1050 ldi @(gr15,#TI_PRE_COUNT),gr5
1051 subicc gr5,#0,gr0,icc0
1052 beq icc0,#0,__entry_return_direct
1053
1054__entry_preempt_need_resched:
1055 ldi @(gr15,#TI_FLAGS),gr4
1056 andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
1057 beq icc0,#1,__entry_return_direct
1058
1059 setlos #PREEMPT_ACTIVE,gr5
1060 sti gr5,@(gr15,#TI_FLAGS)
1061
1062 andi gr23,#~PSR_PIL,gr23
1063 movgs gr23,psr
1064
1065 call schedule
1066 sti gr0,@(gr15,#TI_PRE_COUNT)
1067
1068 movsg psr,gr23
1069 ori gr23,#PSR_PIL_14,gr23
1070 movgs gr23,psr
1071 bra __entry_preempt_need_resched
1072#else
1073 bra __entry_return_direct
1074#endif
1075
1076
1077###############################################################################
1078#
1079# perform work that needs to be done immediately before resumption
1080#
1081###############################################################################
1082 .globl __entry_return_from_user_exception
1083 .balign L1_CACHE_BYTES
1084__entry_return_from_user_exception:
1085 LEDS 0x6501
1086
1087__entry_resume_userspace:
1088 # make sure we don't miss an interrupt setting need_resched or sigpending between
1089 # sampling and the RETT
1090 movsg psr,gr23
1091 ori gr23,#PSR_PIL_14,gr23
1092 movgs gr23,psr
1093
1094__entry_return_from_user_interrupt:
1095 LEDS 0x6402
1096 ldi @(gr15,#TI_FLAGS),gr4
1097 sethi.p %hi(_TIF_WORK_MASK),gr5
1098 setlo %lo(_TIF_WORK_MASK),gr5
1099 andcc gr4,gr5,gr0,icc0
1100 beq icc0,#1,__entry_return_direct
1101
1102__entry_work_pending:
1103 LEDS 0x6404
1104 andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
1105 beq icc0,#1,__entry_work_notifysig
1106
1107__entry_work_resched:
1108 LEDS 0x6408
1109 movsg psr,gr23
1110 andi gr23,#~PSR_PIL,gr23
1111 movgs gr23,psr
1112 call schedule
1113 movsg psr,gr23
1114 ori gr23,#PSR_PIL_14,gr23
1115 movgs gr23,psr
1116
1117 LEDS 0x6401
1118 ldi @(gr15,#TI_FLAGS),gr4
1119 sethi.p %hi(_TIF_WORK_MASK),gr5
1120 setlo %lo(_TIF_WORK_MASK),gr5
1121 andcc gr4,gr5,gr0,icc0
1122 beq icc0,#1,__entry_return_direct
1123 andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
1124 bne icc0,#1,__entry_work_resched
1125
1126__entry_work_notifysig:
1127 LEDS 0x6410
1128 ori.p gr4,#0,gr8
1129 call do_notify_resume
8efc0ab5 1130 bra __entry_resume_userspace
1da177e4
LT		 1131
1132 # perform syscall entry tracing
1133__syscall_trace_entry:
1134 LEDS 0x6320
1135 setlos.p #0,gr8
1136 call do_syscall_trace
1137
1138 ldi @(gr28,#REG_SYSCALLNO),gr7
1139 lddi @(gr28,#REG_GR(8)) ,gr8
1140 lddi @(gr28,#REG_GR(10)),gr10
1141 lddi.p @(gr28,#REG_GR(12)),gr12
1142
1143 subicc gr7,#nr_syscalls,gr0,icc0
1144 bnc icc0,#0,__syscall_badsys
1145 bra __syscall_call
1146
1147 # perform syscall exit tracing
1148__syscall_exit_work:
1149 LEDS 0x6340
1150 andicc gr4,#_TIF_SYSCALL_TRACE,gr0,icc0
1151 beq icc0,#1,__entry_work_pending
1152
1153 movsg psr,gr23
1154 andi gr23,#~PSR_PIL,gr23 ; could let do_syscall_trace() call schedule()
1155 movgs gr23,psr
1156
1157 setlos.p #1,gr8
1158 call do_syscall_trace
1159 bra __entry_resume_userspace
1160
1161__syscall_badsys:
1162 LEDS 0x6380
1163 setlos #-ENOSYS,gr8
1164 sti gr8,@(gr28,#REG_GR(8)) ; save return value
1165 bra __entry_resume_userspace
1166
1167
1168###############################################################################
1169#
1170# syscall vector table
1171#
1172###############################################################################
1173#ifdef CONFIG_MMU
1174#define __MMU(X) X
1175#else
1176#define __MMU(X) sys_ni_syscall
1177#endif
1178
1179 .section .rodata
1180ALIGN
1181 .globl sys_call_table
1182sys_call_table:
1183 .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
1184 .long sys_exit
1185 .long sys_fork
1186 .long sys_read
1187 .long sys_write
1188 .long sys_open /* 5 */
1189 .long sys_close
1190 .long sys_waitpid
1191 .long sys_creat
1192 .long sys_link
1193 .long sys_unlink /* 10 */
1194 .long sys_execve
1195 .long sys_chdir
1196 .long sys_time
1197 .long sys_mknod
1198 .long sys_chmod /* 15 */
1199 .long sys_lchown16
1200 .long sys_ni_syscall /* old break syscall holder */
1201 .long sys_stat
1202 .long sys_lseek
1203 .long sys_getpid /* 20 */
1204 .long sys_mount
1205 .long sys_oldumount
1206 .long sys_setuid16
1207 .long sys_getuid16
1208 .long sys_ni_syscall // sys_stime /* 25 */
1209 .long sys_ptrace
1210 .long sys_alarm
1211 .long sys_fstat
1212 .long sys_pause
1213 .long sys_utime /* 30 */
1214 .long sys_ni_syscall /* old stty syscall holder */
1215 .long sys_ni_syscall /* old gtty syscall holder */
1216 .long sys_access
1217 .long sys_nice
1218 .long sys_ni_syscall /* 35 */ /* old ftime syscall holder */
1219 .long sys_sync
1220 .long sys_kill
1221 .long sys_rename
1222 .long sys_mkdir
1223 .long sys_rmdir /* 40 */
1224 .long sys_dup
1225 .long sys_pipe
1226 .long sys_times
1227 .long sys_ni_syscall /* old prof syscall holder */
1228 .long sys_brk /* 45 */
1229 .long sys_setgid16
1230 .long sys_getgid16
1231 .long sys_ni_syscall // sys_signal
1232 .long sys_geteuid16
1233 .long sys_getegid16 /* 50 */
1234 .long sys_acct
1235 .long sys_umount /* recycled never used phys( */
1236 .long sys_ni_syscall /* old lock syscall holder */
1237 .long sys_ioctl
1238 .long sys_fcntl /* 55 */
1239 .long sys_ni_syscall /* old mpx syscall holder */
1240 .long sys_setpgid
1241 .long sys_ni_syscall /* old ulimit syscall holder */
1242 .long sys_ni_syscall /* old old uname syscall */
1243 .long sys_umask /* 60 */
1244 .long sys_chroot
1245 .long sys_ustat
1246 .long sys_dup2
1247 .long sys_getppid
1248 .long sys_getpgrp /* 65 */
1249 .long sys_setsid
1250 .long sys_sigaction
1251 .long sys_ni_syscall // sys_sgetmask
1252 .long sys_ni_syscall // sys_ssetmask
1253 .long sys_setreuid16 /* 70 */
1254 .long sys_setregid16
1255 .long sys_sigsuspend
1256 .long sys_ni_syscall // sys_sigpending
1257 .long sys_sethostname
1258 .long sys_setrlimit /* 75 */
1259 .long sys_ni_syscall // sys_old_getrlimit
1260 .long sys_getrusage
1261 .long sys_gettimeofday
1262 .long sys_settimeofday
1263 .long sys_getgroups16 /* 80 */
1264 .long sys_setgroups16
1265 .long sys_ni_syscall /* old_select slot */
1266 .long sys_symlink
1267 .long sys_lstat
1268 .long sys_readlink /* 85 */
1269 .long sys_uselib
1270 .long sys_swapon
1271 .long sys_reboot
1272 .long sys_ni_syscall // old_readdir
1273 .long sys_ni_syscall /* 90 */ /* old_mmap slot */
1274 .long sys_munmap
1275 .long sys_truncate
1276 .long sys_ftruncate
1277 .long sys_fchmod
1278 .long sys_fchown16 /* 95 */
1279 .long sys_getpriority
1280 .long sys_setpriority
1281 .long sys_ni_syscall /* old profil syscall holder */
1282 .long sys_statfs
1283 .long sys_fstatfs /* 100 */
1284 .long sys_ni_syscall /* ioperm for i386 */
1285 .long sys_socketcall
1286 .long sys_syslog
1287 .long sys_setitimer
1288 .long sys_getitimer /* 105 */
1289 .long sys_newstat
1290 .long sys_newlstat
1291 .long sys_newfstat
1292 .long sys_ni_syscall /* obsolete olduname( syscall */
1293 .long sys_ni_syscall /* iopl for i386 */ /* 110 */
1294 .long sys_vhangup
1295 .long sys_ni_syscall /* obsolete idle( syscall */
1296 .long sys_ni_syscall /* vm86old for i386 */
1297 .long sys_wait4
1298 .long sys_swapoff /* 115 */
1299 .long sys_sysinfo
1300 .long sys_ipc
1301 .long sys_fsync
1302 .long sys_sigreturn
1303 .long sys_clone /* 120 */
1304 .long sys_setdomainname
1305 .long sys_newuname
1306 .long sys_ni_syscall /* old "cacheflush" */
1307 .long sys_adjtimex
1308 .long __MMU(sys_mprotect) /* 125 */
1309 .long sys_sigprocmask
1310 .long sys_ni_syscall /* old "create_module" */
1311 .long sys_init_module
1312 .long sys_delete_module
1313 .long sys_ni_syscall /* old "get_kernel_syms" */
1314 .long sys_quotactl
1315 .long sys_getpgid
1316 .long sys_fchdir
1317 .long sys_bdflush
1318 .long sys_sysfs /* 135 */
1319 .long sys_personality
1320 .long sys_ni_syscall /* for afs_syscall */
1321 .long sys_setfsuid16
1322 .long sys_setfsgid16
1323 .long sys_llseek /* 140 */
1324 .long sys_getdents
1325 .long sys_select
1326 .long sys_flock
1327 .long __MMU(sys_msync)
1328 .long sys_readv /* 145 */
1329 .long sys_writev
1330 .long sys_getsid
1331 .long sys_fdatasync
1332 .long sys_sysctl
1333 .long __MMU(sys_mlock) /* 150 */
1334 .long __MMU(sys_munlock)
1335 .long __MMU(sys_mlockall)
1336 .long __MMU(sys_munlockall)
1337 .long sys_sched_setparam
1338 .long sys_sched_getparam /* 155 */
1339 .long sys_sched_setscheduler
1340 .long sys_sched_getscheduler
1341 .long sys_sched_yield
1342 .long sys_sched_get_priority_max
1343 .long sys_sched_get_priority_min /* 160 */
1344 .long sys_sched_rr_get_interval
1345 .long sys_nanosleep
1346 .long __MMU(sys_mremap)
1347 .long sys_setresuid16
1348 .long sys_getresuid16 /* 165 */
1349 .long sys_ni_syscall /* for vm86 */
1350 .long sys_ni_syscall /* Old sys_query_module */
1351 .long sys_poll
1352 .long sys_nfsservctl
1353 .long sys_setresgid16 /* 170 */
1354 .long sys_getresgid16
1355 .long sys_prctl
1356 .long sys_rt_sigreturn
1357 .long sys_rt_sigaction
1358 .long sys_rt_sigprocmask /* 175 */
1359 .long sys_rt_sigpending
1360 .long sys_rt_sigtimedwait
1361 .long sys_rt_sigqueueinfo
1362 .long sys_rt_sigsuspend
1363 .long sys_pread64 /* 180 */
1364 .long sys_pwrite64
1365 .long sys_chown16
1366 .long sys_getcwd
1367 .long sys_capget
1368 .long sys_capset /* 185 */
1369 .long sys_sigaltstack
1370 .long sys_sendfile
1371 .long sys_ni_syscall /* streams1 */
1372 .long sys_ni_syscall /* streams2 */
1373 .long sys_vfork /* 190 */
1374 .long sys_getrlimit
1375 .long sys_mmap2
1376 .long sys_truncate64
1377 .long sys_ftruncate64
1378 .long sys_stat64 /* 195 */
1379 .long sys_lstat64
1380 .long sys_fstat64
1381 .long sys_lchown
1382 .long sys_getuid
1383 .long sys_getgid /* 200 */
1384 .long sys_geteuid
1385 .long sys_getegid
1386 .long sys_setreuid
1387 .long sys_setregid
1388 .long sys_getgroups /* 205 */
1389 .long sys_setgroups
1390 .long sys_fchown
1391 .long sys_setresuid
1392 .long sys_getresuid
1393 .long sys_setresgid /* 210 */
1394 .long sys_getresgid
1395 .long sys_chown
1396 .long sys_setuid
1397 .long sys_setgid
1398 .long sys_setfsuid /* 215 */
1399 .long sys_setfsgid
1400 .long sys_pivot_root
1401 .long __MMU(sys_mincore)
1402 .long __MMU(sys_madvise)
1403 .long sys_getdents64 /* 220 */
1404 .long sys_fcntl64
1405 .long sys_ni_syscall /* reserved for TUX */
1406 .long sys_ni_syscall /* Reserved for Security */
1407 .long sys_gettid
1408 .long sys_readahead /* 225 */
1409 .long sys_setxattr
1410 .long sys_lsetxattr
1411 .long sys_fsetxattr
1412 .long sys_getxattr
1413 .long sys_lgetxattr /* 230 */
1414 .long sys_fgetxattr
1415 .long sys_listxattr
1416 .long sys_llistxattr
1417 .long sys_flistxattr
1418 .long sys_removexattr /* 235 */
1419 .long sys_lremovexattr
1420 .long sys_fremovexattr
1421 .long sys_tkill
1422 .long sys_sendfile64
1423 .long sys_futex /* 240 */
1424 .long sys_sched_setaffinity
1425 .long sys_sched_getaffinity
1426 .long sys_ni_syscall //sys_set_thread_area
1427 .long sys_ni_syscall //sys_get_thread_area
1428 .long sys_io_setup /* 245 */
1429 .long sys_io_destroy
1430 .long sys_io_getevents
1431 .long sys_io_submit
1432 .long sys_io_cancel
1433 .long sys_fadvise64 /* 250 */
1434 .long sys_ni_syscall
1435 .long sys_exit_group
1436 .long sys_lookup_dcookie
1437 .long sys_epoll_create
1438 .long sys_epoll_ctl /* 255 */
1439 .long sys_epoll_wait
1440 .long __MMU(sys_remap_file_pages)
1441 .long sys_set_tid_address
1442 .long sys_timer_create
1443 .long sys_timer_settime /* 260 */
1444 .long sys_timer_gettime
1445 .long sys_timer_getoverrun
1446 .long sys_timer_delete
1447 .long sys_clock_settime
1448 .long sys_clock_gettime /* 265 */
1449 .long sys_clock_getres
1450 .long sys_clock_nanosleep
1451 .long sys_statfs64
1452 .long sys_fstatfs64
1453 .long sys_tgkill /* 270 */
1454 .long sys_utimes
1455 .long sys_fadvise64_64
1456 .long sys_ni_syscall /* sys_vserver */
1457 .long sys_mbind
1458 .long sys_get_mempolicy
1459 .long sys_set_mempolicy
1460 .long sys_mq_open
1461 .long sys_mq_unlink
1462 .long sys_mq_timedsend
1463 .long sys_mq_timedreceive /* 280 */
1464 .long sys_mq_notify
1465 .long sys_mq_getsetattr
1466 .long sys_ni_syscall /* reserved for kexec */
1467 .long sys_waitid
1468 .long sys_ni_syscall /* 285 */ /* available */
1469 .long sys_add_key
1470 .long sys_request_key
1471 .long sys_keyctl
68f624fc
DH		 1472 .long sys_ioprio_set
1473 .long sys_ioprio_get /* 290 */
1474 .long sys_inotify_init
1475 .long sys_inotify_add_watch
1476 .long sys_inotify_rm_watch
1477 .long sys_migrate_pages
1478 .long sys_openat /* 295 */
1479 .long sys_mkdirat
1480 .long sys_mknodat
1481 .long sys_fchownat
1482 .long sys_futimesat
1483 .long sys_newfstatat /* 300 */
1484 .long sys_unlinkat
1485 .long sys_renameat
1486 .long sys_linkat
1487 .long sys_symlinkat
1488 .long sys_readlinkat /* 305 */
1489 .long sys_fchmodat
1490 .long sys_faccessat
1491 .long sys_pselect6
1492 .long sys_ppoll
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LT		 1493
1494
1495syscall_table_size = (. - sys_call_table)
Linux kernel - Deliverables
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