| blob | fde1e446b440e7a5027ec597437365350d18fda5 |
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 */
30 #include <linux/linkage.h>
31 #include <asm/thread_info.h>
32 #include <asm/setup.h>
33 #include <asm/segment.h>
34 #include <asm/ptrace.h>
35 #include <asm/errno.h>
36 #include <asm/cache.h>
37 #include <asm/spr-regs.h>
39 #define nr_syscalls ((syscall_table_size)/4)
41 .section .text.entry
42 .balign 4
44 .macro LEDS val
45 # sethi.p %hi(0xe1200004),gr30
46 # setlo %lo(0xe1200004),gr30
47 # setlos #~\val,gr31
48 # st gr31,@(gr30,gr0)
49 # sethi.p %hi(0xffc00100),gr30
50 # setlo %lo(0xffc00100),gr30
51 # sth gr0,@(gr30,gr0)
52 # membar
53 .endm
55 .macro LEDS32
56 # not gr31,gr31
57 # sethi.p %hi(0xe1200004),gr30
58 # setlo %lo(0xe1200004),gr30
59 # st.p gr31,@(gr30,gr0)
60 # srli gr31,#16,gr31
61 # sethi.p %hi(0xffc00100),gr30
62 # setlo %lo(0xffc00100),gr30
63 # sth gr31,@(gr30,gr0)
64 # membar
65 .endm
67 ###############################################################################
68 #
69 # entry point for External interrupts received whilst executing userspace code
70 #
71 ###############################################################################
72 .globl __entry_uspace_external_interrupt
73 .type __entry_uspace_external_interrupt,@function
74 __entry_uspace_external_interrupt:
75 LEDS 0x6200
76 sethi.p %hi(__kernel_frame0_ptr),gr28
77 setlo %lo(__kernel_frame0_ptr),gr28
78 ldi @(gr28,#0),gr28
80 # handle h/w single-step through exceptions
81 sti gr0,@(gr28,#REG__STATUS)
83 .globl __entry_uspace_external_interrupt_reentry
84 __entry_uspace_external_interrupt_reentry:
85 LEDS 0x6201
87 setlos #REG__END,gr30
88 dcpl gr28,gr30,#0
90 # finish building the exception frame
91 sti sp, @(gr28,#REG_SP)
92 stdi gr2, @(gr28,#REG_GR(2))
93 stdi gr4, @(gr28,#REG_GR(4))
94 stdi gr6, @(gr28,#REG_GR(6))
95 stdi gr8, @(gr28,#REG_GR(8))
96 stdi gr10,@(gr28,#REG_GR(10))
97 stdi gr12,@(gr28,#REG_GR(12))
98 stdi gr14,@(gr28,#REG_GR(14))
99 stdi gr16,@(gr28,#REG_GR(16))
100 stdi gr18,@(gr28,#REG_GR(18))
101 stdi gr20,@(gr28,#REG_GR(20))
102 stdi gr22,@(gr28,#REG_GR(22))
103 stdi gr24,@(gr28,#REG_GR(24))
104 stdi gr26,@(gr28,#REG_GR(26))
105 sti gr0, @(gr28,#REG_GR(28))
106 sti gr29,@(gr28,#REG_GR(29))
107 stdi.p gr30,@(gr28,#REG_GR(30))
109 # set up the kernel stack pointer
110 ori gr28,0,sp
112 movsg tbr ,gr20
113 movsg psr ,gr22
114 movsg pcsr,gr21
115 movsg isr ,gr23
116 movsg ccr ,gr24
117 movsg cccr,gr25
118 movsg lr ,gr26
119 movsg lcr ,gr27
121 setlos.p #-1,gr4
122 andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
123 andi.p gr22,#~(PSR_PS|PSR_S),gr6
124 slli gr5,#1,gr5
125 or gr6,gr5,gr5
126 andi gr5,#~PSR_ET,gr5
128 sti gr20,@(gr28,#REG_TBR)
129 sti gr21,@(gr28,#REG_PC)
130 sti gr5 ,@(gr28,#REG_PSR)
131 sti gr23,@(gr28,#REG_ISR)
132 stdi gr24,@(gr28,#REG_CCR)
133 stdi gr26,@(gr28,#REG_LR)
134 sti gr4 ,@(gr28,#REG_SYSCALLNO)
136 movsg iacc0h,gr4
137 movsg iacc0l,gr5
138 stdi gr4,@(gr28,#REG_IACC0)
140 movsg gner0,gr4
141 movsg gner1,gr5
142 stdi.p gr4,@(gr28,#REG_GNER0)
144 # interrupts start off fully disabled in the interrupt handler
145 subcc gr0,gr0,gr0,icc2 /* set Z and clear C */
147 # set up kernel global registers
148 sethi.p %hi(__kernel_current_task),gr5
149 setlo %lo(__kernel_current_task),gr5
150 sethi.p %hi(_gp),gr16
151 setlo %lo(_gp),gr16
152 ldi @(gr5,#0),gr29
153 ldi.p @(gr29,#4),gr15 ; __current_thread_info = current->thread_info
155 # make sure we (the kernel) get div-zero and misalignment exceptions
156 setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
157 movgs gr5,isr
159 # switch to the kernel trap table
160 sethi.p %hi(__entry_kerneltrap_table),gr6
161 setlo %lo(__entry_kerneltrap_table),gr6
162 movgs gr6,tbr
164 # set the return address
165 sethi.p %hi(__entry_return_from_user_interrupt),gr4
166 setlo %lo(__entry_return_from_user_interrupt),gr4
167 movgs gr4,lr
169 # raise the minimum interrupt priority to 15 (NMI only) and enable exceptions
170 movsg psr,gr4
172 ori gr4,#PSR_PIL_14,gr4
173 movgs gr4,psr
174 ori gr4,#PSR_PIL_14|PSR_ET,gr4
175 movgs gr4,psr
177 LEDS 0x6202
178 bra do_IRQ
180 .size __entry_uspace_external_interrupt,.-__entry_uspace_external_interrupt
182 ###############################################################################
183 #
184 # entry point for External interrupts received whilst executing kernel code
185 # - on arriving here, the following registers should already be set up:
186 # GR15 - current thread_info struct pointer
187 # GR16 - kernel GP-REL pointer
188 # GR29 - current task struct pointer
189 # TBR - kernel trap vector table
190 # ISR - kernel's preferred integer controls
191 #
192 ###############################################################################
193 .globl __entry_kernel_external_interrupt
194 .type __entry_kernel_external_interrupt,@function
195 __entry_kernel_external_interrupt:
196 LEDS 0x6210
197 // sub sp,gr15,gr31
198 // LEDS32
200 # set up the stack pointer
201 or.p sp,gr0,gr30
202 subi sp,#REG__END,sp
203 sti gr30,@(sp,#REG_SP)
205 # handle h/w single-step through exceptions
206 sti gr0,@(sp,#REG__STATUS)
208 .globl __entry_kernel_external_interrupt_reentry
209 __entry_kernel_external_interrupt_reentry:
210 LEDS 0x6211
212 # set up the exception frame
213 setlos #REG__END,gr30
214 dcpl sp,gr30,#0
216 sti.p gr28,@(sp,#REG_GR(28))
217 ori sp,0,gr28
219 # finish building the exception frame
220 stdi gr2,@(gr28,#REG_GR(2))
221 stdi gr4,@(gr28,#REG_GR(4))
222 stdi gr6,@(gr28,#REG_GR(6))
223 stdi gr8,@(gr28,#REG_GR(8))
224 stdi gr10,@(gr28,#REG_GR(10))
225 stdi gr12,@(gr28,#REG_GR(12))
226 stdi gr14,@(gr28,#REG_GR(14))
227 stdi gr16,@(gr28,#REG_GR(16))
228 stdi gr18,@(gr28,#REG_GR(18))
229 stdi gr20,@(gr28,#REG_GR(20))
230 stdi gr22,@(gr28,#REG_GR(22))
231 stdi gr24,@(gr28,#REG_GR(24))
232 stdi gr26,@(gr28,#REG_GR(26))
233 sti gr29,@(gr28,#REG_GR(29))
234 stdi.p gr30,@(gr28,#REG_GR(30))
236 # note virtual interrupts will be fully enabled upon return
237 subicc gr0,#1,gr0,icc2 /* clear Z, set C */
239 movsg tbr ,gr20
240 movsg psr ,gr22
241 movsg pcsr,gr21
242 movsg isr ,gr23
243 movsg ccr ,gr24
244 movsg cccr,gr25
245 movsg lr ,gr26
246 movsg lcr ,gr27
248 setlos.p #-1,gr4
249 andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
250 andi.p gr22,#~(PSR_PS|PSR_S),gr6
251 slli gr5,#1,gr5
252 or gr6,gr5,gr5
253 andi.p gr5,#~PSR_ET,gr5
255 # set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel
256 # - for an explanation of how it works, see: Documentation/frv/atomic-ops.txt
257 andi gr25,#~0xc0,gr25
259 sti gr20,@(gr28,#REG_TBR)
260 sti gr21,@(gr28,#REG_PC)
261 sti gr5 ,@(gr28,#REG_PSR)
262 sti gr23,@(gr28,#REG_ISR)
263 stdi gr24,@(gr28,#REG_CCR)
264 stdi gr26,@(gr28,#REG_LR)
265 sti gr4 ,@(gr28,#REG_SYSCALLNO)
267 movsg iacc0h,gr4
268 movsg iacc0l,gr5
269 stdi gr4,@(gr28,#REG_IACC0)
271 movsg gner0,gr4
272 movsg gner1,gr5
273 stdi.p gr4,@(gr28,#REG_GNER0)
275 # interrupts start off fully disabled in the interrupt handler
276 subcc gr0,gr0,gr0,icc2 /* set Z and clear C */
278 # set the return address
279 sethi.p %hi(__entry_return_from_kernel_interrupt),gr4
280 setlo %lo(__entry_return_from_kernel_interrupt),gr4
281 movgs gr4,lr
283 # clear power-saving mode flags
284 movsg hsr0,gr4
285 andi gr4,#~HSR0_PDM,gr4
286 movgs gr4,hsr0
288 # raise the minimum interrupt priority to 15 (NMI only) and enable exceptions
289 movsg psr,gr4
290 ori gr4,#PSR_PIL_14,gr4
291 movgs gr4,psr
292 ori gr4,#PSR_ET,gr4
293 movgs gr4,psr
295 LEDS 0x6212
296 bra do_IRQ
298 .size __entry_kernel_external_interrupt,.-__entry_kernel_external_interrupt
300 ###############################################################################
301 #
302 # deal with interrupts that were actually virtually disabled
303 # - we need to really disable them, flag the fact and return immediately
304 # - if you change this, you must alter break.S also
305 #
306 ###############################################################################
307 .balign L1_CACHE_BYTES
308 .globl __entry_kernel_external_interrupt_virtually_disabled
309 .type __entry_kernel_external_interrupt_virtually_disabled,@function
310 __entry_kernel_external_interrupt_virtually_disabled:
311 movsg psr,gr30
312 andi gr30,#~PSR_PIL,gr30
313 ori gr30,#PSR_PIL_14,gr30 ; debugging interrupts only
314 movgs gr30,psr
315 subcc gr0,gr0,gr0,icc2 ; leave Z set, clear C
316 rett #0
318 .size __entry_kernel_external_interrupt_virtually_disabled,.-__entry_kernel_external_interrupt_virtually_disabled
320 ###############################################################################
321 #
322 # deal with re-enablement of interrupts that were pending when virtually re-enabled
323 # - set ICC2.C, re-enable the real interrupts and return
324 # - we can clear ICC2.Z because we shouldn't be here if it's not 0 [due to TIHI]
325 # - if you change this, you must alter break.S also
326 #
327 ###############################################################################
328 .balign L1_CACHE_BYTES
329 .globl __entry_kernel_external_interrupt_virtual_reenable
330 .type __entry_kernel_external_interrupt_virtual_reenable,@function
331 __entry_kernel_external_interrupt_virtual_reenable:
332 movsg psr,gr30
333 andi gr30,#~PSR_PIL,gr30 ; re-enable interrupts
334 movgs gr30,psr
335 subicc gr0,#1,gr0,icc2 ; clear Z, set C
336 rett #0
338 .size __entry_kernel_external_interrupt_virtual_reenable,.-__entry_kernel_external_interrupt_virtual_reenable
340 ###############################################################################
341 #
342 # entry point for Software and Progam interrupts generated whilst executing userspace code
343 #
344 ###############################################################################
345 .globl __entry_uspace_softprog_interrupt
346 .type __entry_uspace_softprog_interrupt,@function
347 .globl __entry_uspace_handle_mmu_fault
348 __entry_uspace_softprog_interrupt:
349 LEDS 0x6000
350 #ifdef CONFIG_MMU
351 movsg ear0,gr28
352 __entry_uspace_handle_mmu_fault:
353 movgs gr28,scr2
354 #endif
355 sethi.p %hi(__kernel_frame0_ptr),gr28
356 setlo %lo(__kernel_frame0_ptr),gr28
357 ldi @(gr28,#0),gr28
359 # handle h/w single-step through exceptions
360 sti gr0,@(gr28,#REG__STATUS)
362 .globl __entry_uspace_softprog_interrupt_reentry
363 __entry_uspace_softprog_interrupt_reentry:
364 LEDS 0x6001
366 setlos #REG__END,gr30
367 dcpl gr28,gr30,#0
369 # set up the kernel stack pointer
370 sti.p sp,@(gr28,#REG_SP)
371 ori gr28,0,sp
372 sti gr0,@(gr28,#REG_GR(28))
374 stdi gr20,@(gr28,#REG_GR(20))
375 stdi gr22,@(gr28,#REG_GR(22))
377 movsg tbr,gr20
378 movsg pcsr,gr21
379 movsg psr,gr22
381 sethi.p %hi(__entry_return_from_user_exception),gr23
382 setlo %lo(__entry_return_from_user_exception),gr23
384 bra __entry_common
386 .size __entry_uspace_softprog_interrupt,.-__entry_uspace_softprog_interrupt
388 # single-stepping was disabled on entry to a TLB handler that then faulted
389 #ifdef CONFIG_MMU
390 .globl __entry_uspace_handle_mmu_fault_sstep
391 __entry_uspace_handle_mmu_fault_sstep:
392 movgs gr28,scr2
393 sethi.p %hi(__kernel_frame0_ptr),gr28
394 setlo %lo(__kernel_frame0_ptr),gr28
395 ldi @(gr28,#0),gr28
397 # flag single-step re-enablement
398 sti gr0,@(gr28,#REG__STATUS)
399 bra __entry_uspace_softprog_interrupt_reentry
400 #endif
403 ###############################################################################
404 #
405 # entry point for Software and Progam interrupts generated whilst executing kernel code
406 #
407 ###############################################################################
408 .globl __entry_kernel_softprog_interrupt
409 .type __entry_kernel_softprog_interrupt,@function
410 __entry_kernel_softprog_interrupt:
411 LEDS 0x6004
413 #ifdef CONFIG_MMU
414 movsg ear0,gr30
415 movgs gr30,scr2
416 #endif
418 .globl __entry_kernel_handle_mmu_fault
419 __entry_kernel_handle_mmu_fault:
420 # set up the stack pointer
421 subi sp,#REG__END,sp
422 sti sp,@(sp,#REG_SP)
423 sti sp,@(sp,#REG_SP-4)
424 andi sp,#~7,sp
426 # handle h/w single-step through exceptions
427 sti gr0,@(sp,#REG__STATUS)
429 .globl __entry_kernel_softprog_interrupt_reentry
430 __entry_kernel_softprog_interrupt_reentry:
431 LEDS 0x6005
433 setlos #REG__END,gr30
434 dcpl sp,gr30,#0
436 # set up the exception frame
437 sti.p gr28,@(sp,#REG_GR(28))
438 ori sp,0,gr28
440 stdi gr20,@(gr28,#REG_GR(20))
441 stdi gr22,@(gr28,#REG_GR(22))
443 ldi @(sp,#REG_SP),gr22 /* reconstruct the old SP */
444 addi gr22,#REG__END,gr22
445 sti gr22,@(sp,#REG_SP)
447 # set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel
448 # - for an explanation of how it works, see: Documentation/frv/atomic-ops.txt
449 movsg cccr,gr20
450 andi gr20,#~0xc0,gr20
451 movgs gr20,cccr
453 movsg tbr,gr20
454 movsg pcsr,gr21
455 movsg psr,gr22
457 sethi.p %hi(__entry_return_from_kernel_exception),gr23
458 setlo %lo(__entry_return_from_kernel_exception),gr23
459 bra __entry_common
461 .size __entry_kernel_softprog_interrupt,.-__entry_kernel_softprog_interrupt
463 # single-stepping was disabled on entry to a TLB handler that then faulted
464 #ifdef CONFIG_MMU
465 .globl __entry_kernel_handle_mmu_fault_sstep
466 __entry_kernel_handle_mmu_fault_sstep:
467 # set up the stack pointer
468 subi sp,#REG__END,sp
469 sti sp,@(sp,#REG_SP)
470 sti sp,@(sp,#REG_SP-4)
471 andi sp,#~7,sp
473 # flag single-step re-enablement
474 sethi #REG__STATUS_STEP,gr30
475 sti gr30,@(sp,#REG__STATUS)
476 bra __entry_kernel_softprog_interrupt_reentry
477 #endif
480 ###############################################################################
481 #
482 # the rest of the kernel entry point code
483 # - on arriving here, the following registers should be set up:
484 # GR1 - kernel stack pointer
485 # GR7 - syscall number (trap 0 only)
486 # GR8-13 - syscall args (trap 0 only)
487 # GR20 - saved TBR
488 # GR21 - saved PC
489 # GR22 - saved PSR
490 # GR23 - return handler address
491 # GR28 - exception frame on stack
492 # SCR2 - saved EAR0 where applicable (clobbered by ICI & ICEF insns on FR451)
493 # PSR - PSR.S 1, PSR.ET 0
494 #
495 ###############################################################################
496 .globl __entry_common
497 .type __entry_common,@function
498 __entry_common:
499 LEDS 0x6008
501 # finish building the exception frame
502 stdi gr2,@(gr28,#REG_GR(2))
503 stdi gr4,@(gr28,#REG_GR(4))
504 stdi gr6,@(gr28,#REG_GR(6))
505 stdi gr8,@(gr28,#REG_GR(8))
506 stdi gr10,@(gr28,#REG_GR(10))
507 stdi gr12,@(gr28,#REG_GR(12))
508 stdi gr14,@(gr28,#REG_GR(14))
509 stdi gr16,@(gr28,#REG_GR(16))
510 stdi gr18,@(gr28,#REG_GR(18))
511 stdi gr24,@(gr28,#REG_GR(24))
512 stdi gr26,@(gr28,#REG_GR(26))
513 sti gr29,@(gr28,#REG_GR(29))
514 stdi gr30,@(gr28,#REG_GR(30))
516 movsg lcr ,gr27
517 movsg lr ,gr26
518 movgs gr23,lr
519 movsg cccr,gr25
520 movsg ccr ,gr24
521 movsg isr ,gr23
523 setlos.p #-1,gr4
524 andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
525 andi.p gr22,#~(PSR_PS|PSR_S),gr6
526 slli gr5,#1,gr5
527 or gr6,gr5,gr5
528 andi gr5,#~PSR_ET,gr5
530 sti gr20,@(gr28,#REG_TBR)
531 sti gr21,@(gr28,#REG_PC)
532 sti gr5 ,@(gr28,#REG_PSR)
533 sti gr23,@(gr28,#REG_ISR)
534 stdi gr24,@(gr28,#REG_CCR)
535 stdi gr26,@(gr28,#REG_LR)
536 sti gr4 ,@(gr28,#REG_SYSCALLNO)
538 movsg iacc0h,gr4
539 movsg iacc0l,gr5
540 stdi gr4,@(gr28,#REG_IACC0)
542 movsg gner0,gr4
543 movsg gner1,gr5
544 stdi.p gr4,@(gr28,#REG_GNER0)
546 # set up virtual interrupt disablement
547 subicc gr0,#1,gr0,icc2 /* clear Z flag, set C flag */
549 # set up kernel global registers
550 sethi.p %hi(__kernel_current_task),gr5
551 setlo %lo(__kernel_current_task),gr5
552 sethi.p %hi(_gp),gr16
553 setlo %lo(_gp),gr16
554 ldi @(gr5,#0),gr29
555 ldi @(gr29,#4),gr15 ; __current_thread_info = current->thread_info
557 # switch to the kernel trap table
558 sethi.p %hi(__entry_kerneltrap_table),gr6
559 setlo %lo(__entry_kerneltrap_table),gr6
560 movgs gr6,tbr
562 # make sure we (the kernel) get div-zero and misalignment exceptions
563 setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
564 movgs gr5,isr
566 # clear power-saving mode flags
567 movsg hsr0,gr4
568 andi gr4,#~HSR0_PDM,gr4
569 movgs gr4,hsr0
571 # multiplex again using old TBR as a guide
572 setlos.p #TBR_TT,gr3
573 sethi %hi(__entry_vector_table),gr6
574 and.p gr20,gr3,gr5
575 setlo %lo(__entry_vector_table),gr6
576 srli gr5,#2,gr5
577 ld @(gr5,gr6),gr5
579 LEDS 0x6009
580 jmpl @(gr5,gr0)
583 .size __entry_common,.-__entry_common
585 ###############################################################################
586 #
587 # handle instruction MMU fault
588 #
589 ###############################################################################
590 #ifdef CONFIG_MMU
591 .globl __entry_insn_mmu_fault
592 __entry_insn_mmu_fault:
593 LEDS 0x6010
594 setlos #0,gr8
595 movsg esr0,gr9
596 movsg scr2,gr10
598 # now that we've accessed the exception regs, we can enable exceptions
599 movsg psr,gr4
600 ori gr4,#PSR_ET,gr4
601 movgs gr4,psr
603 sethi.p %hi(do_page_fault),gr5
604 setlo %lo(do_page_fault),gr5
605 jmpl @(gr5,gr0) ; call do_page_fault(0,esr0,ear0)
606 #endif
609 ###############################################################################
610 #
611 # handle instruction access error
612 #
613 ###############################################################################
614 .globl __entry_insn_access_error
615 __entry_insn_access_error:
616 LEDS 0x6011
617 sethi.p %hi(insn_access_error),gr5
618 setlo %lo(insn_access_error),gr5
619 movsg esfr1,gr8
620 movsg epcr0,gr9
621 movsg esr0,gr10
623 # now that we've accessed the exception regs, we can enable exceptions
624 movsg psr,gr4
625 ori gr4,#PSR_ET,gr4
626 movgs gr4,psr
627 jmpl @(gr5,gr0) ; call insn_access_error(esfr1,epcr0,esr0)
629 ###############################################################################
630 #
631 # handle various instructions of dubious legality
632 #
633 ###############################################################################
634 .globl __entry_unsupported_trap
635 .globl __entry_illegal_instruction
636 .globl __entry_privileged_instruction
637 .globl __entry_debug_exception
638 __entry_unsupported_trap:
639 subi gr21,#4,gr21
640 sti gr21,@(gr28,#REG_PC)
641 __entry_illegal_instruction:
642 __entry_privileged_instruction:
643 __entry_debug_exception:
644 LEDS 0x6012
645 sethi.p %hi(illegal_instruction),gr5
646 setlo %lo(illegal_instruction),gr5
647 movsg esfr1,gr8
648 movsg epcr0,gr9
649 movsg esr0,gr10
651 # now that we've accessed the exception regs, we can enable exceptions
652 movsg psr,gr4
653 ori gr4,#PSR_ET,gr4
654 movgs gr4,psr
655 jmpl @(gr5,gr0) ; call ill_insn(esfr1,epcr0,esr0)
657 ###############################################################################
658 #
659 # handle atomic operation emulation for userspace
660 #
661 ###############################################################################
662 .globl __entry_atomic_op
663 __entry_atomic_op:
664 LEDS 0x6012
665 sethi.p %hi(atomic_operation),gr5
666 setlo %lo(atomic_operation),gr5
667 movsg esfr1,gr8
668 movsg epcr0,gr9
669 movsg esr0,gr10
671 # now that we've accessed the exception regs, we can enable exceptions
672 movsg psr,gr4
673 ori gr4,#PSR_ET,gr4
674 movgs gr4,psr
675 jmpl @(gr5,gr0) ; call atomic_operation(esfr1,epcr0,esr0)
677 ###############################################################################
678 #
679 # handle media exception
680 #
681 ###############################################################################
682 .globl __entry_media_exception
683 __entry_media_exception:
684 LEDS 0x6013
685 sethi.p %hi(media_exception),gr5
686 setlo %lo(media_exception),gr5
687 movsg msr0,gr8
688 movsg msr1,gr9
690 # now that we've accessed the exception regs, we can enable exceptions
691 movsg psr,gr4
692 ori gr4,#PSR_ET,gr4
693 movgs gr4,psr
694 jmpl @(gr5,gr0) ; call media_excep(msr0,msr1)
696 ###############################################################################
697 #
698 # handle data MMU fault
699 # handle data DAT fault (write-protect exception)
700 #
701 ###############################################################################
702 #ifdef CONFIG_MMU
703 .globl __entry_data_mmu_fault
704 __entry_data_mmu_fault:
705 .globl __entry_data_dat_fault
706 __entry_data_dat_fault:
707 LEDS 0x6014
708 setlos #1,gr8
709 movsg esr0,gr9
710 movsg scr2,gr10 ; saved EAR0
712 # now that we've accessed the exception regs, we can enable exceptions
713 movsg psr,gr4
714 ori gr4,#PSR_ET,gr4
715 movgs gr4,psr
717 sethi.p %hi(do_page_fault),gr5
718 setlo %lo(do_page_fault),gr5
719 jmpl @(gr5,gr0) ; call do_page_fault(1,esr0,ear0)
720 #endif
722 ###############################################################################
723 #
724 # handle data and instruction access exceptions
725 #
726 ###############################################################################
727 .globl __entry_insn_access_exception
728 .globl __entry_data_access_exception
729 __entry_insn_access_exception:
730 __entry_data_access_exception:
731 LEDS 0x6016
732 sethi.p %hi(memory_access_exception),gr5
733 setlo %lo(memory_access_exception),gr5
734 movsg esr0,gr8
735 movsg scr2,gr9 ; saved EAR0
736 movsg epcr0,gr10
738 # now that we've accessed the exception regs, we can enable exceptions
739 movsg psr,gr4
740 ori gr4,#PSR_ET,gr4
741 movgs gr4,psr
742 jmpl @(gr5,gr0) ; call memory_access_error(esr0,ear0,epcr0)
744 ###############################################################################
745 #
746 # handle data access error
747 #
748 ###############################################################################
749 .globl __entry_data_access_error
750 __entry_data_access_error:
751 LEDS 0x6016
752 sethi.p %hi(data_access_error),gr5
753 setlo %lo(data_access_error),gr5
754 movsg esfr1,gr8
755 movsg esr15,gr9
756 movsg ear15,gr10
758 # now that we've accessed the exception regs, we can enable exceptions
759 movsg psr,gr4
760 ori gr4,#PSR_ET,gr4
761 movgs gr4,psr
762 jmpl @(gr5,gr0) ; call data_access_error(esfr1,esr15,ear15)
764 ###############################################################################
765 #
766 # handle data store error
767 #
768 ###############################################################################
769 .globl __entry_data_store_error
770 __entry_data_store_error:
771 LEDS 0x6017
772 sethi.p %hi(data_store_error),gr5
773 setlo %lo(data_store_error),gr5
774 movsg esfr1,gr8
775 movsg esr14,gr9
777 # now that we've accessed the exception regs, we can enable exceptions
778 movsg psr,gr4
779 ori gr4,#PSR_ET,gr4
780 movgs gr4,psr
781 jmpl @(gr5,gr0) ; call data_store_error(esfr1,esr14)
783 ###############################################################################
784 #
785 # handle division exception
786 #
787 ###############################################################################
788 .globl __entry_division_exception
789 __entry_division_exception:
790 LEDS 0x6018
791 sethi.p %hi(division_exception),gr5
792 setlo %lo(division_exception),gr5
793 movsg esfr1,gr8
794 movsg esr0,gr9
795 movsg isr,gr10
797 # now that we've accessed the exception regs, we can enable exceptions
798 movsg psr,gr4
799 ori gr4,#PSR_ET,gr4
800 movgs gr4,psr
801 jmpl @(gr5,gr0) ; call div_excep(esfr1,esr0,isr)
803 ###############################################################################
804 #
805 # handle compound exception
806 #
807 ###############################################################################
808 .globl __entry_compound_exception
809 __entry_compound_exception:
810 LEDS 0x6019
811 sethi.p %hi(compound_exception),gr5
812 setlo %lo(compound_exception),gr5
813 movsg esfr1,gr8
814 movsg esr0,gr9
815 movsg esr14,gr10
816 movsg esr15,gr11
817 movsg msr0,gr12
818 movsg msr1,gr13
820 # now that we've accessed the exception regs, we can enable exceptions
821 movsg psr,gr4
822 ori gr4,#PSR_ET,gr4
823 movgs gr4,psr
824 jmpl @(gr5,gr0) ; call comp_excep(esfr1,esr0,esr14,esr15,msr0,msr1)
826 ###############################################################################
827 #
828 # handle interrupts and NMIs
829 #
830 ###############################################################################
831 .globl __entry_do_IRQ
832 __entry_do_IRQ:
833 LEDS 0x6020
835 # we can enable exceptions
836 movsg psr,gr4
837 ori gr4,#PSR_ET,gr4
838 movgs gr4,psr
839 bra do_IRQ
841 .globl __entry_do_NMI
842 __entry_do_NMI:
843 LEDS 0x6021
845 # we can enable exceptions
846 movsg psr,gr4
847 ori gr4,#PSR_ET,gr4
848 movgs gr4,psr
849 bra do_NMI
851 ###############################################################################
852 #
853 # the return path for a newly forked child process
854 # - __switch_to() saved the old current pointer in GR8 for us
855 #
856 ###############################################################################
857 .globl ret_from_fork
858 ret_from_fork:
859 LEDS 0x6100
860 call schedule_tail
862 # fork & co. return 0 to child
863 setlos.p #0,gr8
864 bra __syscall_exit
866 ###################################################################################################
867 #
868 # Return to user mode is not as complex as all this looks,
869 # but we want the default path for a system call return to
870 # go as quickly as possible which is why some of this is
871 # less clear than it otherwise should be.
872 #
873 ###################################################################################################
874 .balign L1_CACHE_BYTES
875 .globl system_call
876 system_call:
877 LEDS 0x6101
878 movsg psr,gr4 ; enable exceptions
879 ori gr4,#PSR_ET,gr4
880 movgs gr4,psr
882 sti gr7,@(gr28,#REG_SYSCALLNO)
883 sti.p gr8,@(gr28,#REG_ORIG_GR8)
885 subicc gr7,#nr_syscalls,gr0,icc0
886 bnc icc0,#0,__syscall_badsys
888 ldi @(gr15,#TI_FLAGS),gr4
889 andicc gr4,#_TIF_SYSCALL_TRACE,gr0,icc0
890 bne icc0,#0,__syscall_trace_entry
892 __syscall_call:
893 slli.p gr7,#2,gr7
894 sethi %hi(sys_call_table),gr5
895 setlo %lo(sys_call_table),gr5
896 ld @(gr5,gr7),gr4
897 calll @(gr4,gr0)
900 ###############################################################################
901 #
902 # return to interrupted process
903 #
904 ###############################################################################
905 __syscall_exit:
906 LEDS 0x6300
908 sti gr8,@(gr28,#REG_GR(8)) ; save return value
910 # rebuild saved psr - execve will change it for init/main.c
911 ldi @(gr28,#REG_PSR),gr22
912 srli gr22,#1,gr5
913 andi.p gr22,#~PSR_PS,gr22
914 andi gr5,#PSR_PS,gr5
915 or gr5,gr22,gr22
916 ori gr22,#PSR_S,gr22
918 # keep current PSR in GR23
919 movsg psr,gr23
921 # make sure we don't miss an interrupt setting need_resched or sigpending between
922 # sampling and the RETT
923 ori gr23,#PSR_PIL_14,gr23
924 movgs gr23,psr
926 ldi @(gr15,#TI_FLAGS),gr4
927 sethi.p %hi(_TIF_ALLWORK_MASK),gr5
928 setlo %lo(_TIF_ALLWORK_MASK),gr5
929 andcc gr4,gr5,gr0,icc0
930 bne icc0,#0,__syscall_exit_work
932 # restore all registers and return
933 __entry_return_direct:
934 LEDS 0x6301
936 andi gr22,#~PSR_ET,gr22
937 movgs gr22,psr
939 ldi @(gr28,#REG_ISR),gr23
940 lddi @(gr28,#REG_CCR),gr24
941 lddi @(gr28,#REG_LR) ,gr26
942 ldi @(gr28,#REG_PC) ,gr21
943 ldi @(gr28,#REG_TBR),gr20
945 movgs gr20,tbr
946 movgs gr21,pcsr
947 movgs gr23,isr
948 movgs gr24,ccr
949 movgs gr25,cccr
950 movgs gr26,lr
951 movgs gr27,lcr
953 lddi @(gr28,#REG_GNER0),gr4
954 movgs gr4,gner0
955 movgs gr5,gner1
957 lddi @(gr28,#REG_IACC0),gr4
958 movgs gr4,iacc0h
959 movgs gr5,iacc0l
961 lddi @(gr28,#REG_GR(4)) ,gr4
962 lddi @(gr28,#REG_GR(6)) ,gr6
963 lddi @(gr28,#REG_GR(8)) ,gr8
964 lddi @(gr28,#REG_GR(10)),gr10
965 lddi @(gr28,#REG_GR(12)),gr12
966 lddi @(gr28,#REG_GR(14)),gr14
967 lddi @(gr28,#REG_GR(16)),gr16
968 lddi @(gr28,#REG_GR(18)),gr18
969 lddi @(gr28,#REG_GR(20)),gr20
970 lddi @(gr28,#REG_GR(22)),gr22
971 lddi @(gr28,#REG_GR(24)),gr24
972 lddi @(gr28,#REG_GR(26)),gr26
973 ldi @(gr28,#REG_GR(29)),gr29
974 lddi @(gr28,#REG_GR(30)),gr30
976 # check to see if a debugging return is required
977 LEDS 0x67f0
978 movsg ccr,gr2
979 ldi @(gr28,#REG__STATUS),gr3
980 andicc gr3,#REG__STATUS_STEP,gr0,icc0
981 bne icc0,#0,__entry_return_singlestep
982 movgs gr2,ccr
984 ldi @(gr28,#REG_SP) ,sp
985 lddi @(gr28,#REG_GR(2)) ,gr2
986 ldi @(gr28,#REG_GR(28)),gr28
988 LEDS 0x67fe
989 // movsg pcsr,gr31
990 // LEDS32
992 #if 0
993 # store the current frame in the workram on the FR451
994 movgs gr28,scr2
995 sethi.p %hi(0xfe800000),gr28
996 setlo %lo(0xfe800000),gr28
998 stdi gr2,@(gr28,#REG_GR(2))
999 stdi gr4,@(gr28,#REG_GR(4))
1000 stdi gr6,@(gr28,#REG_GR(6))
1001 stdi gr8,@(gr28,#REG_GR(8))
1002 stdi gr10,@(gr28,#REG_GR(10))
1003 stdi gr12,@(gr28,#REG_GR(12))
1004 stdi gr14,@(gr28,#REG_GR(14))
1005 stdi gr16,@(gr28,#REG_GR(16))
1006 stdi gr18,@(gr28,#REG_GR(18))
1007 stdi gr24,@(gr28,#REG_GR(24))
1008 stdi gr26,@(gr28,#REG_GR(26))
1009 sti gr29,@(gr28,#REG_GR(29))
1010 stdi gr30,@(gr28,#REG_GR(30))
1012 movsg tbr ,gr30
1013 sti gr30,@(gr28,#REG_TBR)
1014 movsg pcsr,gr30
1015 sti gr30,@(gr28,#REG_PC)
1016 movsg psr ,gr30
1017 sti gr30,@(gr28,#REG_PSR)
1018 movsg isr ,gr30
1019 sti gr30,@(gr28,#REG_ISR)
1020 movsg ccr ,gr30
1021 movsg cccr,gr31
1022 stdi gr30,@(gr28,#REG_CCR)
1023 movsg lr ,gr30
1024 movsg lcr ,gr31
1025 stdi gr30,@(gr28,#REG_LR)
1026 sti gr0 ,@(gr28,#REG_SYSCALLNO)
1027 movsg scr2,gr28
1028 #endif
1030 rett #0
1032 # return via break.S
1033 __entry_return_singlestep:
1034 movgs gr2,ccr
1035 lddi @(gr28,#REG_GR(2)) ,gr2
1036 ldi @(gr28,#REG_SP) ,sp
1037 ldi @(gr28,#REG_GR(28)),gr28
1038 LEDS 0x67ff
1039 break
1040 .globl __entry_return_singlestep_breaks_here
1041 __entry_return_singlestep_breaks_here:
1042 nop
1045 ###############################################################################
1046 #
1047 # return to a process interrupted in kernel space
1048 # - we need to consider preemption if that is enabled
1049 #
1050 ###############################################################################
1051 .balign L1_CACHE_BYTES
1052 __entry_return_from_kernel_exception:
1053 LEDS 0x6302
1054 movsg psr,gr23
1055 ori gr23,#PSR_PIL_14,gr23
1056 movgs gr23,psr
1057 bra __entry_return_direct
1059 .balign L1_CACHE_BYTES
1060 __entry_return_from_kernel_interrupt:
1061 LEDS 0x6303
1062 movsg psr,gr23
1063 ori gr23,#PSR_PIL_14,gr23
1064 movgs gr23,psr
1066 #ifdef CONFIG_PREEMPT
1067 ldi @(gr15,#TI_PRE_COUNT),gr5
1068 subicc gr5,#0,gr0,icc0
1069 beq icc0,#0,__entry_return_direct
1071 __entry_preempt_need_resched:
1072 ldi @(gr15,#TI_FLAGS),gr4
1073 andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
1074 beq icc0,#1,__entry_return_direct
1076 setlos #PREEMPT_ACTIVE,gr5
1077 sti gr5,@(gr15,#TI_FLAGS)
1079 andi gr23,#~PSR_PIL,gr23
1080 movgs gr23,psr
1082 call schedule
1083 sti gr0,@(gr15,#TI_PRE_COUNT)
1085 movsg psr,gr23
1086 ori gr23,#PSR_PIL_14,gr23
1087 movgs gr23,psr
1088 bra __entry_preempt_need_resched
1089 #else
1090 bra __entry_return_direct
1091 #endif
1094 ###############################################################################
1095 #
1096 # perform work that needs to be done immediately before resumption
1097 #
1098 ###############################################################################
1099 .globl __entry_return_from_user_exception
1100 .balign L1_CACHE_BYTES
1101 __entry_return_from_user_exception:
1102 LEDS 0x6501
1104 __entry_resume_userspace:
1105 # make sure we don't miss an interrupt setting need_resched or sigpending between
1106 # sampling and the RETT
1107 movsg psr,gr23
1108 ori gr23,#PSR_PIL_14,gr23
1109 movgs gr23,psr
1111 __entry_return_from_user_interrupt:
1112 LEDS 0x6402
1113 ldi @(gr15,#TI_FLAGS),gr4
1114 sethi.p %hi(_TIF_WORK_MASK),gr5
1115 setlo %lo(_TIF_WORK_MASK),gr5
1116 andcc gr4,gr5,gr0,icc0
1117 beq icc0,#1,__entry_return_direct
1119 __entry_work_pending:
1120 LEDS 0x6404
1121 andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
1122 beq icc0,#1,__entry_work_notifysig
1124 __entry_work_resched:
1125 LEDS 0x6408
1126 movsg psr,gr23
1127 andi gr23,#~PSR_PIL,gr23
1128 movgs gr23,psr
1129 call schedule
1130 movsg psr,gr23
1131 ori gr23,#PSR_PIL_14,gr23
1132 movgs gr23,psr
1134 LEDS 0x6401
1135 ldi @(gr15,#TI_FLAGS),gr4
1136 sethi.p %hi(_TIF_WORK_MASK),gr5
1137 setlo %lo(_TIF_WORK_MASK),gr5
1138 andcc gr4,gr5,gr0,icc0
1139 beq icc0,#1,__entry_return_direct
1140 andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
1141 bne icc0,#1,__entry_work_resched
1143 __entry_work_notifysig:
1144 LEDS 0x6410
1145 ori.p gr4,#0,gr8
1146 call do_notify_resume
1147 bra __entry_resume_userspace
1149 # perform syscall entry tracing
1150 __syscall_trace_entry:
1151 LEDS 0x6320
1152 call syscall_trace_entry
1154 lddi.p @(gr28,#REG_GR(8)) ,gr8
1155 ori gr8,#0,gr7 ; syscall_trace_entry() returned new syscallno
1156 lddi @(gr28,#REG_GR(10)),gr10
1157 lddi.p @(gr28,#REG_GR(12)),gr12
1159 subicc gr7,#nr_syscalls,gr0,icc0
1160 bnc icc0,#0,__syscall_badsys
1161 bra __syscall_call
1163 # perform syscall exit tracing
1164 __syscall_exit_work:
1165 LEDS 0x6340
1166 andicc gr4,#_TIF_SYSCALL_TRACE,gr0,icc0
1167 beq icc0,#1,__entry_work_pending
1169 movsg psr,gr23
1170 andi gr23,#~PSR_PIL,gr23 ; could let syscall_trace_exit() call schedule()
1171 movgs gr23,psr
1173 call syscall_trace_exit
1174 bra __entry_resume_userspace
1176 __syscall_badsys:
1177 LEDS 0x6380
1178 setlos #-ENOSYS,gr8
1179 sti gr8,@(gr28,#REG_GR(8)) ; save return value
1180 bra __entry_resume_userspace
1183 ###############################################################################
1184 #
1185 # syscall vector table
1186 #
1187 ###############################################################################
1188 .section .rodata
1189 ALIGN
1190 .globl sys_call_table
1191 sys_call_table:
1192 .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
1193 .long sys_exit
1194 .long sys_fork
1195 .long sys_read
1196 .long sys_write
1197 .long sys_open /* 5 */
1198 .long sys_close
1199 .long sys_waitpid
1200 .long sys_creat
1201 .long sys_link
1202 .long sys_unlink /* 10 */
1203 .long sys_execve
1204 .long sys_chdir
1205 .long sys_time
1206 .long sys_mknod
1207 .long sys_chmod /* 15 */
1208 .long sys_lchown16
1209 .long sys_ni_syscall /* old break syscall holder */
1210 .long sys_stat
1211 .long sys_lseek
1212 .long sys_getpid /* 20 */
1213 .long sys_mount
1214 .long sys_oldumount
1215 .long sys_setuid16
1216 .long sys_getuid16
1217 .long sys_ni_syscall // sys_stime /* 25 */
1218 .long sys_ptrace
1219 .long sys_alarm
1220 .long sys_fstat
1221 .long sys_pause
1222 .long sys_utime /* 30 */
1223 .long sys_ni_syscall /* old stty syscall holder */
1224 .long sys_ni_syscall /* old gtty syscall holder */
1225 .long sys_access
1226 .long sys_nice
1227 .long sys_ni_syscall /* 35 */ /* old ftime syscall holder */
1228 .long sys_sync
1229 .long sys_kill
1230 .long sys_rename
1231 .long sys_mkdir
1232 .long sys_rmdir /* 40 */
1233 .long sys_dup
1234 .long sys_pipe
1235 .long sys_times
1236 .long sys_ni_syscall /* old prof syscall holder */
1237 .long sys_brk /* 45 */
1238 .long sys_setgid16
1239 .long sys_getgid16
1240 .long sys_ni_syscall // sys_signal
1241 .long sys_geteuid16
1242 .long sys_getegid16 /* 50 */
1243 .long sys_acct
1244 .long sys_umount /* recycled never used phys( */
1245 .long sys_ni_syscall /* old lock syscall holder */
1246 .long sys_ioctl
1247 .long sys_fcntl /* 55 */
1248 .long sys_ni_syscall /* old mpx syscall holder */
1249 .long sys_setpgid
1250 .long sys_ni_syscall /* old ulimit syscall holder */
1251 .long sys_ni_syscall /* old old uname syscall */
1252 .long sys_umask /* 60 */
1253 .long sys_chroot
1254 .long sys_ustat
1255 .long sys_dup2
1256 .long sys_getppid
1257 .long sys_getpgrp /* 65 */
1258 .long sys_setsid
1259 .long sys_sigaction
1260 .long sys_ni_syscall // sys_sgetmask
1261 .long sys_ni_syscall // sys_ssetmask
1262 .long sys_setreuid16 /* 70 */
1263 .long sys_setregid16
1264 .long sys_sigsuspend
1265 .long sys_ni_syscall // sys_sigpending
1266 .long sys_sethostname
1267 .long sys_setrlimit /* 75 */
1268 .long sys_ni_syscall // sys_old_getrlimit
1269 .long sys_getrusage
1270 .long sys_gettimeofday
1271 .long sys_settimeofday
1272 .long sys_getgroups16 /* 80 */
1273 .long sys_setgroups16
1274 .long sys_ni_syscall /* old_select slot */
1275 .long sys_symlink
1276 .long sys_lstat
1277 .long sys_readlink /* 85 */
1278 .long sys_uselib
1279 .long sys_swapon
1280 .long sys_reboot
1281 .long sys_ni_syscall // old_readdir
1282 .long sys_ni_syscall /* 90 */ /* old_mmap slot */
1283 .long sys_munmap
1284 .long sys_truncate
1285 .long sys_ftruncate
1286 .long sys_fchmod
1287 .long sys_fchown16 /* 95 */
1288 .long sys_getpriority
1289 .long sys_setpriority
1290 .long sys_ni_syscall /* old profil syscall holder */
1291 .long sys_statfs
1292 .long sys_fstatfs /* 100 */
1293 .long sys_ni_syscall /* ioperm for i386 */
1294 .long sys_socketcall
1295 .long sys_syslog
1296 .long sys_setitimer
1297 .long sys_getitimer /* 105 */
1298 .long sys_newstat
1299 .long sys_newlstat
1300 .long sys_newfstat
1301 .long sys_ni_syscall /* obsolete olduname( syscall */
1302 .long sys_ni_syscall /* iopl for i386 */ /* 110 */
1303 .long sys_vhangup
1304 .long sys_ni_syscall /* obsolete idle( syscall */
1305 .long sys_ni_syscall /* vm86old for i386 */
1306 .long sys_wait4
1307 .long sys_swapoff /* 115 */
1308 .long sys_sysinfo
1309 .long sys_ipc
1310 .long sys_fsync
1311 .long sys_sigreturn
1312 .long sys_clone /* 120 */
1313 .long sys_setdomainname
1314 .long sys_newuname
1315 .long sys_ni_syscall /* old "cacheflush" */
1316 .long sys_adjtimex
1317 .long sys_mprotect /* 125 */
1318 .long sys_sigprocmask
1319 .long sys_ni_syscall /* old "create_module" */
1320 .long sys_init_module
1321 .long sys_delete_module
1322 .long sys_ni_syscall /* old "get_kernel_syms" */
1323 .long sys_quotactl
1324 .long sys_getpgid
1325 .long sys_fchdir
1326 .long sys_bdflush
1327 .long sys_sysfs /* 135 */
1328 .long sys_personality
1329 .long sys_ni_syscall /* for afs_syscall */
1330 .long sys_setfsuid16
1331 .long sys_setfsgid16
1332 .long sys_llseek /* 140 */
1333 .long sys_getdents
1334 .long sys_select
1335 .long sys_flock
1336 .long sys_msync
1337 .long sys_readv /* 145 */
1338 .long sys_writev
1339 .long sys_getsid
1340 .long sys_fdatasync
1341 .long sys_sysctl
1342 .long sys_mlock /* 150 */
1343 .long sys_munlock
1344 .long sys_mlockall
1345 .long sys_munlockall
1346 .long sys_sched_setparam
1347 .long sys_sched_getparam /* 155 */
1348 .long sys_sched_setscheduler
1349 .long sys_sched_getscheduler
1350 .long sys_sched_yield
1351 .long sys_sched_get_priority_max
1352 .long sys_sched_get_priority_min /* 160 */
1353 .long sys_sched_rr_get_interval
1354 .long sys_nanosleep
1355 .long sys_mremap
1356 .long sys_setresuid16
1357 .long sys_getresuid16 /* 165 */
1358 .long sys_ni_syscall /* for vm86 */
1359 .long sys_ni_syscall /* Old sys_query_module */
1360 .long sys_poll
1361 .long sys_nfsservctl
1362 .long sys_setresgid16 /* 170 */
1363 .long sys_getresgid16
1364 .long sys_prctl
1365 .long sys_rt_sigreturn
1366 .long sys_rt_sigaction
1367 .long sys_rt_sigprocmask /* 175 */
1368 .long sys_rt_sigpending
1369 .long sys_rt_sigtimedwait
1370 .long sys_rt_sigqueueinfo
1371 .long sys_rt_sigsuspend
1372 .long sys_pread64 /* 180 */
1373 .long sys_pwrite64
1374 .long sys_chown16
1375 .long sys_getcwd
1376 .long sys_capget
1377 .long sys_capset /* 185 */
1378 .long sys_sigaltstack
1379 .long sys_sendfile
1380 .long sys_ni_syscall /* streams1 */
1381 .long sys_ni_syscall /* streams2 */
1382 .long sys_vfork /* 190 */
1383 .long sys_getrlimit
1384 .long sys_mmap2
1385 .long sys_truncate64
1386 .long sys_ftruncate64
1387 .long sys_stat64 /* 195 */
1388 .long sys_lstat64
1389 .long sys_fstat64
1390 .long sys_lchown
1391 .long sys_getuid
1392 .long sys_getgid /* 200 */
1393 .long sys_geteuid
1394 .long sys_getegid
1395 .long sys_setreuid
1396 .long sys_setregid
1397 .long sys_getgroups /* 205 */
1398 .long sys_setgroups
1399 .long sys_fchown
1400 .long sys_setresuid
1401 .long sys_getresuid
1402 .long sys_setresgid /* 210 */
1403 .long sys_getresgid
1404 .long sys_chown
1405 .long sys_setuid
1406 .long sys_setgid
1407 .long sys_setfsuid /* 215 */
1408 .long sys_setfsgid
1409 .long sys_pivot_root
1410 .long sys_mincore
1411 .long sys_madvise
1412 .long sys_getdents64 /* 220 */
1413 .long sys_fcntl64
1414 .long sys_ni_syscall /* reserved for TUX */
1415 .long sys_ni_syscall /* Reserved for Security */
1416 .long sys_gettid
1417 .long sys_readahead /* 225 */
1418 .long sys_setxattr
1419 .long sys_lsetxattr
1420 .long sys_fsetxattr
1421 .long sys_getxattr
1422 .long sys_lgetxattr /* 230 */
1423 .long sys_fgetxattr
1424 .long sys_listxattr
1425 .long sys_llistxattr
1426 .long sys_flistxattr
1427 .long sys_removexattr /* 235 */
1428 .long sys_lremovexattr
1429 .long sys_fremovexattr
1430 .long sys_tkill
1431 .long sys_sendfile64
1432 .long sys_futex /* 240 */
1433 .long sys_sched_setaffinity
1434 .long sys_sched_getaffinity
1435 .long sys_ni_syscall //sys_set_thread_area
1436 .long sys_ni_syscall //sys_get_thread_area
1437 .long sys_io_setup /* 245 */
1438 .long sys_io_destroy
1439 .long sys_io_getevents
1440 .long sys_io_submit
1441 .long sys_io_cancel
1442 .long sys_fadvise64 /* 250 */
1443 .long sys_ni_syscall
1444 .long sys_exit_group
1445 .long sys_lookup_dcookie
1446 .long sys_epoll_create
1447 .long sys_epoll_ctl /* 255 */
1448 .long sys_epoll_wait
1449 .long sys_remap_file_pages
1450 .long sys_set_tid_address
1451 .long sys_timer_create
1452 .long sys_timer_settime /* 260 */
1453 .long sys_timer_gettime
1454 .long sys_timer_getoverrun
1455 .long sys_timer_delete
1456 .long sys_clock_settime
1457 .long sys_clock_gettime /* 265 */
1458 .long sys_clock_getres
1459 .long sys_clock_nanosleep
1460 .long sys_statfs64
1461 .long sys_fstatfs64
1462 .long sys_tgkill /* 270 */
1463 .long sys_utimes
1464 .long sys_fadvise64_64
1465 .long sys_ni_syscall /* sys_vserver */
1466 .long sys_mbind
1467 .long sys_get_mempolicy
1468 .long sys_set_mempolicy
1469 .long sys_mq_open
1470 .long sys_mq_unlink
1471 .long sys_mq_timedsend
1472 .long sys_mq_timedreceive /* 280 */
1473 .long sys_mq_notify
1474 .long sys_mq_getsetattr
1475 .long sys_ni_syscall /* reserved for kexec */
1476 .long sys_waitid
1477 .long sys_ni_syscall /* 285 */ /* available */
1478 .long sys_add_key
1479 .long sys_request_key
1480 .long sys_keyctl
1481 .long sys_ioprio_set
1482 .long sys_ioprio_get /* 290 */
1483 .long sys_inotify_init
1484 .long sys_inotify_add_watch
1485 .long sys_inotify_rm_watch
1486 .long sys_migrate_pages
1487 .long sys_openat /* 295 */
1488 .long sys_mkdirat
1489 .long sys_mknodat
1490 .long sys_fchownat
1491 .long sys_futimesat
1492 .long sys_fstatat64 /* 300 */
1493 .long sys_unlinkat
1494 .long sys_renameat
1495 .long sys_linkat
1496 .long sys_symlinkat
1497 .long sys_readlinkat /* 305 */
1498 .long sys_fchmodat
1499 .long sys_faccessat
1500 .long sys_pselect6
1501 .long sys_ppoll
1502 .long sys_unshare /* 310 */
1503 .long sys_set_robust_list
1504 .long sys_get_robust_list
1505 .long sys_splice
1506 .long sys_sync_file_range
1507 .long sys_tee /* 315 */
1508 .long sys_vmsplice
1509 .long sys_move_pages
1510 .long sys_getcpu
1511 .long sys_epoll_pwait
1512 .long sys_utimensat /* 320 */
1513 .long sys_signalfd
1514 .long sys_timerfd_create
1515 .long sys_eventfd
1516 .long sys_fallocate
1517 .long sys_timerfd_settime /* 325 */
1518 .long sys_timerfd_gettime
1519 .long sys_signalfd4
1520 .long sys_eventfd2
1521 .long sys_epoll_create1
1522 .long sys_dup3 /* 330 */
1523 .long sys_pipe2
1524 .long sys_inotify_init1
1525 .long sys_preadv
1526 .long sys_pwritev
1527 .long sys_rt_tgsigqueueinfo /* 335 */
1528 .long sys_perf_counter_open
1530 syscall_table_size = (. - sys_call_table)