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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/kernel/entry-armv.S
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/kernel/entry-armv.S')
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diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
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1/*
2 * linux/arch/arm/kernel/entry-armv.S
3 *
4 * Copyright (C) 1996,1997,1998 Russell King.
5 * ARM700 fix by Matthew Godbolt (linux-user@willothewisp.demon.co.uk)
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * Low-level vector interface routines
12 *
13 * Note: there is a StrongARM bug in the STMIA rn, {regs}^ instruction that causes
14 * it to save wrong values... Be aware!
15 */
16#include <linux/config.h>
17#include <linux/init.h>
18
19#include <asm/thread_info.h>
20#include <asm/glue.h>
21#include <asm/ptrace.h>
22#include <asm/vfpmacros.h>
23
24#include "entry-header.S"
25
26/*
27 * Invalid mode handlers
28 */
29 .macro inv_entry, sym, reason
30 sub sp, sp, #S_FRAME_SIZE @ Allocate frame size in one go
31 stmia sp, {r0 - lr} @ Save XXX r0 - lr
32 ldr r4, .LC\sym
33 mov r1, #\reason
34 .endm
35
36__pabt_invalid:
37 inv_entry abt, BAD_PREFETCH
38 b 1f
39
40__dabt_invalid:
41 inv_entry abt, BAD_DATA
42 b 1f
43
44__irq_invalid:
45 inv_entry irq, BAD_IRQ
46 b 1f
47
48__und_invalid:
49 inv_entry und, BAD_UNDEFINSTR
50
511: zero_fp
52 ldmia r4, {r5 - r7} @ Get XXX pc, cpsr, old_r0
53 add r4, sp, #S_PC
54 stmia r4, {r5 - r7} @ Save XXX pc, cpsr, old_r0
55 mov r0, sp
56 and r2, r6, #31 @ int mode
57 b bad_mode
58
59/*
60 * SVC mode handlers
61 */
62 .macro svc_entry, sym
63 sub sp, sp, #S_FRAME_SIZE
64 stmia sp, {r0 - r12} @ save r0 - r12
65 ldr r2, .LC\sym
66 add r0, sp, #S_FRAME_SIZE
67 ldmia r2, {r2 - r4} @ get pc, cpsr
68 add r5, sp, #S_SP
69 mov r1, lr
70
71 @
72 @ We are now ready to fill in the remaining blanks on the stack:
73 @
74 @ r0 - sp_svc
75 @ r1 - lr_svc
76 @ r2 - lr_<exception>, already fixed up for correct return/restart
77 @ r3 - spsr_<exception>
78 @ r4 - orig_r0 (see pt_regs definition in ptrace.h)
79 @
80 stmia r5, {r0 - r4}
81 .endm
82
83 .align 5
84__dabt_svc:
85 svc_entry abt
86
87 @
88 @ get ready to re-enable interrupts if appropriate
89 @
90 mrs r9, cpsr
91 tst r3, #PSR_I_BIT
92 biceq r9, r9, #PSR_I_BIT
93
94 @
95 @ Call the processor-specific abort handler:
96 @
97 @ r2 - aborted context pc
98 @ r3 - aborted context cpsr
99 @
100 @ The abort handler must return the aborted address in r0, and
101 @ the fault status register in r1. r9 must be preserved.
102 @
103#ifdef MULTI_ABORT
104 ldr r4, .LCprocfns
105 mov lr, pc
106 ldr pc, [r4]
107#else
108 bl CPU_ABORT_HANDLER
109#endif
110
111 @
112 @ set desired IRQ state, then call main handler
113 @
114 msr cpsr_c, r9
115 mov r2, sp
116 bl do_DataAbort
117
118 @
119 @ IRQs off again before pulling preserved data off the stack
120 @
121 disable_irq r0
122
123 @
124 @ restore SPSR and restart the instruction
125 @
126 ldr r0, [sp, #S_PSR]
127 msr spsr_cxsf, r0
128 ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
129
130 .align 5
131__irq_svc:
132 svc_entry irq
133#ifdef CONFIG_PREEMPT
134 get_thread_info r8
135 ldr r9, [r8, #TI_PREEMPT] @ get preempt count
136 add r7, r9, #1 @ increment it
137 str r7, [r8, #TI_PREEMPT]
138#endif
1391: get_irqnr_and_base r0, r6, r5, lr
140 movne r1, sp
141 @
142 @ routine called with r0 = irq number, r1 = struct pt_regs *
143 @
144 adrne lr, 1b
145 bne asm_do_IRQ
146#ifdef CONFIG_PREEMPT
147 ldr r0, [r8, #TI_FLAGS] @ get flags
148 tst r0, #_TIF_NEED_RESCHED
149 blne svc_preempt
150preempt_return:
151 ldr r0, [r8, #TI_PREEMPT] @ read preempt value
152 teq r0, r7
153 str r9, [r8, #TI_PREEMPT] @ restore preempt count
154 strne r0, [r0, -r0] @ bug()
155#endif
156 ldr r0, [sp, #S_PSR] @ irqs are already disabled
157 msr spsr_cxsf, r0
158 ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
159
160 .ltorg
161
162#ifdef CONFIG_PREEMPT
163svc_preempt:
164 teq r9, #0 @ was preempt count = 0
165 ldreq r6, .LCirq_stat
166 movne pc, lr @ no
167 ldr r0, [r6, #4] @ local_irq_count
168 ldr r1, [r6, #8] @ local_bh_count
169 adds r0, r0, r1
170 movne pc, lr
171 mov r7, #0 @ preempt_schedule_irq
172 str r7, [r8, #TI_PREEMPT] @ expects preempt_count == 0
1731: bl preempt_schedule_irq @ irq en/disable is done inside
174 ldr r0, [r8, #TI_FLAGS] @ get new tasks TI_FLAGS
175 tst r0, #_TIF_NEED_RESCHED
176 beq preempt_return @ go again
177 b 1b
178#endif
179
180 .align 5
181__und_svc:
182 svc_entry und
183
184 @
185 @ call emulation code, which returns using r9 if it has emulated
186 @ the instruction, or the more conventional lr if we are to treat
187 @ this as a real undefined instruction
188 @
189 @ r0 - instruction
190 @
191 ldr r0, [r2, #-4]
192 adr r9, 1f
193 bl call_fpe
194
195 mov r0, sp @ struct pt_regs *regs
196 bl do_undefinstr
197
198 @
199 @ IRQs off again before pulling preserved data off the stack
200 @
2011: disable_irq r0
202
203 @
204 @ restore SPSR and restart the instruction
205 @
206 ldr lr, [sp, #S_PSR] @ Get SVC cpsr
207 msr spsr_cxsf, lr
208 ldmia sp, {r0 - pc}^ @ Restore SVC registers
209
210 .align 5
211__pabt_svc:
212 svc_entry abt
213
214 @
215 @ re-enable interrupts if appropriate
216 @
217 mrs r9, cpsr
218 tst r3, #PSR_I_BIT
219 biceq r9, r9, #PSR_I_BIT
220 msr cpsr_c, r9
221
222 @
223 @ set args, then call main handler
224 @
225 @ r0 - address of faulting instruction
226 @ r1 - pointer to registers on stack
227 @
228 mov r0, r2 @ address (pc)
229 mov r1, sp @ regs
230 bl do_PrefetchAbort @ call abort handler
231
232 @
233 @ IRQs off again before pulling preserved data off the stack
234 @
235 disable_irq r0
236
237 @
238 @ restore SPSR and restart the instruction
239 @
240 ldr r0, [sp, #S_PSR]
241 msr spsr_cxsf, r0
242 ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
243
244 .align 5
245.LCirq:
246 .word __temp_irq
247.LCund:
248 .word __temp_und
249.LCabt:
250 .word __temp_abt
251#ifdef MULTI_ABORT
252.LCprocfns:
253 .word processor
254#endif
255.LCfp:
256 .word fp_enter
257#ifdef CONFIG_PREEMPT
258.LCirq_stat:
259 .word irq_stat
260#endif
261
262/*
263 * User mode handlers
264 */
265 .macro usr_entry, sym
266 sub sp, sp, #S_FRAME_SIZE @ Allocate frame size in one go
267 stmia sp, {r0 - r12} @ save r0 - r12
268 ldr r7, .LC\sym
269 add r5, sp, #S_PC
270 ldmia r7, {r2 - r4} @ Get USR pc, cpsr
271
272 @
273 @ We are now ready to fill in the remaining blanks on the stack:
274 @
275 @ r2 - lr_<exception>, already fixed up for correct return/restart
276 @ r3 - spsr_<exception>
277 @ r4 - orig_r0 (see pt_regs definition in ptrace.h)
278 @
279 @ Also, separately save sp_usr and lr_usr
280 @
281 stmia r5, {r2 - r4}
282 stmdb r5, {sp, lr}^
283
284 @
285 @ Enable the alignment trap while in kernel mode
286 @
287 alignment_trap r7, r0, __temp_\sym
288
289 @
290 @ Clear FP to mark the first stack frame
291 @
292 zero_fp
293 .endm
294
295 .align 5
296__dabt_usr:
297 usr_entry abt
298
299 @
300 @ Call the processor-specific abort handler:
301 @
302 @ r2 - aborted context pc
303 @ r3 - aborted context cpsr
304 @
305 @ The abort handler must return the aborted address in r0, and
306 @ the fault status register in r1.
307 @
308#ifdef MULTI_ABORT
309 ldr r4, .LCprocfns
310 mov lr, pc
311 ldr pc, [r4]
312#else
313 bl CPU_ABORT_HANDLER
314#endif
315
316 @
317 @ IRQs on, then call the main handler
318 @
319 enable_irq r2
320 mov r2, sp
321 adr lr, ret_from_exception
322 b do_DataAbort
323
324 .align 5
325__irq_usr:
326 usr_entry irq
327
328#ifdef CONFIG_PREEMPT
329 get_thread_info r8
330 ldr r9, [r8, #TI_PREEMPT] @ get preempt count
331 add r7, r9, #1 @ increment it
332 str r7, [r8, #TI_PREEMPT]
333#endif
3341: get_irqnr_and_base r0, r6, r5, lr
335 movne r1, sp
336 adrne lr, 1b
337 @
338 @ routine called with r0 = irq number, r1 = struct pt_regs *
339 @
340 bne asm_do_IRQ
341#ifdef CONFIG_PREEMPT
342 ldr r0, [r8, #TI_PREEMPT]
343 teq r0, r7
344 str r9, [r8, #TI_PREEMPT]
345 strne r0, [r0, -r0]
346 mov tsk, r8
347#else
348 get_thread_info tsk
349#endif
350 mov why, #0
351 b ret_to_user
352
353 .ltorg
354
355 .align 5
356__und_usr:
357 usr_entry und
358
359 tst r3, #PSR_T_BIT @ Thumb mode?
360 bne fpundefinstr @ ignore FP
361 sub r4, r2, #4
362
363 @
364 @ fall through to the emulation code, which returns using r9 if
365 @ it has emulated the instruction, or the more conventional lr
366 @ if we are to treat this as a real undefined instruction
367 @
368 @ r0 - instruction
369 @
3701: ldrt r0, [r4]
371 adr r9, ret_from_exception
372 adr lr, fpundefinstr
373 @
374 @ fallthrough to call_fpe
375 @
376
377/*
378 * The out of line fixup for the ldrt above.
379 */
380 .section .fixup, "ax"
3812: mov pc, r9
382 .previous
383 .section __ex_table,"a"
384 .long 1b, 2b
385 .previous
386
387/*
388 * Check whether the instruction is a co-processor instruction.
389 * If yes, we need to call the relevant co-processor handler.
390 *
391 * Note that we don't do a full check here for the co-processor
392 * instructions; all instructions with bit 27 set are well
393 * defined. The only instructions that should fault are the
394 * co-processor instructions. However, we have to watch out
395 * for the ARM6/ARM7 SWI bug.
396 *
397 * Emulators may wish to make use of the following registers:
398 * r0 = instruction opcode.
399 * r2 = PC+4
400 * r10 = this threads thread_info structure.
401 */
402call_fpe:
403 tst r0, #0x08000000 @ only CDP/CPRT/LDC/STC have bit 27
404#if defined(CONFIG_CPU_ARM610) || defined(CONFIG_CPU_ARM710)
405 and r8, r0, #0x0f000000 @ mask out op-code bits
406 teqne r8, #0x0f000000 @ SWI (ARM6/7 bug)?
407#endif
408 moveq pc, lr
409 get_thread_info r10 @ get current thread
410 and r8, r0, #0x00000f00 @ mask out CP number
411 mov r7, #1
412 add r6, r10, #TI_USED_CP
413 strb r7, [r6, r8, lsr #8] @ set appropriate used_cp[]
414#ifdef CONFIG_IWMMXT
415 @ Test if we need to give access to iWMMXt coprocessors
416 ldr r5, [r10, #TI_FLAGS]
417 rsbs r7, r8, #(1 << 8) @ CP 0 or 1 only
418 movcss r7, r5, lsr #(TIF_USING_IWMMXT + 1)
419 bcs iwmmxt_task_enable
420#endif
421 enable_irq r7
422 add pc, pc, r8, lsr #6
423 mov r0, r0
424
425 mov pc, lr @ CP#0
426 b do_fpe @ CP#1 (FPE)
427 b do_fpe @ CP#2 (FPE)
428 mov pc, lr @ CP#3
429 mov pc, lr @ CP#4
430 mov pc, lr @ CP#5
431 mov pc, lr @ CP#6
432 mov pc, lr @ CP#7
433 mov pc, lr @ CP#8
434 mov pc, lr @ CP#9
435#ifdef CONFIG_VFP
436 b do_vfp @ CP#10 (VFP)
437 b do_vfp @ CP#11 (VFP)
438#else
439 mov pc, lr @ CP#10 (VFP)
440 mov pc, lr @ CP#11 (VFP)
441#endif
442 mov pc, lr @ CP#12
443 mov pc, lr @ CP#13
444 mov pc, lr @ CP#14 (Debug)
445 mov pc, lr @ CP#15 (Control)
446
447do_fpe:
448 ldr r4, .LCfp
449 add r10, r10, #TI_FPSTATE @ r10 = workspace
450 ldr pc, [r4] @ Call FP module USR entry point
451
452/*
453 * The FP module is called with these registers set:
454 * r0 = instruction
455 * r2 = PC+4
456 * r9 = normal "successful" return address
457 * r10 = FP workspace
458 * lr = unrecognised FP instruction return address
459 */
460
461 .data
462ENTRY(fp_enter)
463 .word fpundefinstr
464 .text
465
466fpundefinstr:
467 mov r0, sp
468 adr lr, ret_from_exception
469 b do_undefinstr
470
471 .align 5
472__pabt_usr:
473 usr_entry abt
474
475 enable_irq r0 @ Enable interrupts
476 mov r0, r2 @ address (pc)
477 mov r1, sp @ regs
478 bl do_PrefetchAbort @ call abort handler
479 /* fall through */
480/*
481 * This is the return code to user mode for abort handlers
482 */
483ENTRY(ret_from_exception)
484 get_thread_info tsk
485 mov why, #0
486 b ret_to_user
487
488/*
489 * Register switch for ARMv3 and ARMv4 processors
490 * r0 = previous task_struct, r1 = previous thread_info, r2 = next thread_info
491 * previous and next are guaranteed not to be the same.
492 */
493ENTRY(__switch_to)
494 add ip, r1, #TI_CPU_SAVE
495 ldr r3, [r2, #TI_TP_VALUE]
496 stmia ip!, {r4 - sl, fp, sp, lr} @ Store most regs on stack
497 ldr r6, [r2, #TI_CPU_DOMAIN]!
498#if defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_IWMMXT)
499 mra r4, r5, acc0
500 stmia ip, {r4, r5}
501#endif
502 mov r4, #0xffff0fff
503 str r3, [r4, #-3] @ Set TLS ptr
504 mcr p15, 0, r6, c3, c0, 0 @ Set domain register
505#ifdef CONFIG_VFP
506 @ Always disable VFP so we can lazily save/restore the old
507 @ state. This occurs in the context of the previous thread.
508 VFPFMRX r4, FPEXC
509 bic r4, r4, #FPEXC_ENABLE
510 VFPFMXR FPEXC, r4
511#endif
512#if defined(CONFIG_IWMMXT)
513 bl iwmmxt_task_switch
514#elif defined(CONFIG_CPU_XSCALE)
515 add r4, r2, #40 @ cpu_context_save->extra
516 ldmib r4, {r4, r5}
517 mar acc0, r4, r5
518#endif
519 ldmib r2, {r4 - sl, fp, sp, pc} @ Load all regs saved previously
520
521 __INIT
522/*
523 * Vector stubs.
524 *
525 * This code is copied to 0x200 or 0xffff0200 so we can use branches in the
526 * vectors, rather than ldr's.
527 *
528 * Common stub entry macro:
529 * Enter in IRQ mode, spsr = SVC/USR CPSR, lr = SVC/USR PC
530 */
531 .macro vector_stub, name, sym, correction=0
532 .align 5
533
534vector_\name:
535 ldr r13, .LCs\sym
536 .if \correction
537 sub lr, lr, #\correction
538 .endif
539 str lr, [r13] @ save lr_IRQ
540 mrs lr, spsr
541 str lr, [r13, #4] @ save spsr_IRQ
542 @
543 @ now branch to the relevant MODE handling routine
544 @
545 mrs r13, cpsr
546 bic r13, r13, #MODE_MASK
547 orr r13, r13, #MODE_SVC
548 msr spsr_cxsf, r13 @ switch to SVC_32 mode
549
550 and lr, lr, #15
551 ldr lr, [pc, lr, lsl #2]
552 movs pc, lr @ Changes mode and branches
553 .endm
554
555__stubs_start:
556/*
557 * Interrupt dispatcher
558 */
559 vector_stub irq, irq, 4
560
561 .long __irq_usr @ 0 (USR_26 / USR_32)
562 .long __irq_invalid @ 1 (FIQ_26 / FIQ_32)
563 .long __irq_invalid @ 2 (IRQ_26 / IRQ_32)
564 .long __irq_svc @ 3 (SVC_26 / SVC_32)
565 .long __irq_invalid @ 4
566 .long __irq_invalid @ 5
567 .long __irq_invalid @ 6
568 .long __irq_invalid @ 7
569 .long __irq_invalid @ 8
570 .long __irq_invalid @ 9
571 .long __irq_invalid @ a
572 .long __irq_invalid @ b
573 .long __irq_invalid @ c
574 .long __irq_invalid @ d
575 .long __irq_invalid @ e
576 .long __irq_invalid @ f
577
578/*
579 * Data abort dispatcher
580 * Enter in ABT mode, spsr = USR CPSR, lr = USR PC
581 */
582 vector_stub dabt, abt, 8
583
584 .long __dabt_usr @ 0 (USR_26 / USR_32)
585 .long __dabt_invalid @ 1 (FIQ_26 / FIQ_32)
586 .long __dabt_invalid @ 2 (IRQ_26 / IRQ_32)
587 .long __dabt_svc @ 3 (SVC_26 / SVC_32)
588 .long __dabt_invalid @ 4
589 .long __dabt_invalid @ 5
590 .long __dabt_invalid @ 6
591 .long __dabt_invalid @ 7
592 .long __dabt_invalid @ 8
593 .long __dabt_invalid @ 9
594 .long __dabt_invalid @ a
595 .long __dabt_invalid @ b
596 .long __dabt_invalid @ c
597 .long __dabt_invalid @ d
598 .long __dabt_invalid @ e
599 .long __dabt_invalid @ f
600
601/*
602 * Prefetch abort dispatcher
603 * Enter in ABT mode, spsr = USR CPSR, lr = USR PC
604 */
605 vector_stub pabt, abt, 4
606
607 .long __pabt_usr @ 0 (USR_26 / USR_32)
608 .long __pabt_invalid @ 1 (FIQ_26 / FIQ_32)
609 .long __pabt_invalid @ 2 (IRQ_26 / IRQ_32)
610 .long __pabt_svc @ 3 (SVC_26 / SVC_32)
611 .long __pabt_invalid @ 4
612 .long __pabt_invalid @ 5
613 .long __pabt_invalid @ 6
614 .long __pabt_invalid @ 7
615 .long __pabt_invalid @ 8
616 .long __pabt_invalid @ 9
617 .long __pabt_invalid @ a
618 .long __pabt_invalid @ b
619 .long __pabt_invalid @ c
620 .long __pabt_invalid @ d
621 .long __pabt_invalid @ e
622 .long __pabt_invalid @ f
623
624/*
625 * Undef instr entry dispatcher
626 * Enter in UND mode, spsr = SVC/USR CPSR, lr = SVC/USR PC
627 */
628 vector_stub und, und
629
630 .long __und_usr @ 0 (USR_26 / USR_32)
631 .long __und_invalid @ 1 (FIQ_26 / FIQ_32)
632 .long __und_invalid @ 2 (IRQ_26 / IRQ_32)
633 .long __und_svc @ 3 (SVC_26 / SVC_32)
634 .long __und_invalid @ 4
635 .long __und_invalid @ 5
636 .long __und_invalid @ 6
637 .long __und_invalid @ 7
638 .long __und_invalid @ 8
639 .long __und_invalid @ 9
640 .long __und_invalid @ a
641 .long __und_invalid @ b
642 .long __und_invalid @ c
643 .long __und_invalid @ d
644 .long __und_invalid @ e
645 .long __und_invalid @ f
646
647 .align 5
648
649/*=============================================================================
650 * Undefined FIQs
651 *-----------------------------------------------------------------------------
652 * Enter in FIQ mode, spsr = ANY CPSR, lr = ANY PC
653 * MUST PRESERVE SVC SPSR, but need to switch to SVC mode to show our msg.
654 * Basically to switch modes, we *HAVE* to clobber one register... brain
655 * damage alert! I don't think that we can execute any code in here in any
656 * other mode than FIQ... Ok you can switch to another mode, but you can't
657 * get out of that mode without clobbering one register.
658 */
659vector_fiq:
660 disable_fiq
661 subs pc, lr, #4
662
663/*=============================================================================
664 * Address exception handler
665 *-----------------------------------------------------------------------------
666 * These aren't too critical.
667 * (they're not supposed to happen, and won't happen in 32-bit data mode).
668 */
669
670vector_addrexcptn:
671 b vector_addrexcptn
672
673/*
674 * We group all the following data together to optimise
675 * for CPUs with separate I & D caches.
676 */
677 .align 5
678
679.LCvswi:
680 .word vector_swi
681
682.LCsirq:
683 .word __temp_irq
684.LCsund:
685 .word __temp_und
686.LCsabt:
687 .word __temp_abt
688
689__stubs_end:
690
691 .equ __real_stubs_start, .LCvectors + 0x200
692
693.LCvectors:
694 swi SYS_ERROR0
695 b __real_stubs_start + (vector_und - __stubs_start)
696 ldr pc, __real_stubs_start + (.LCvswi - __stubs_start)
697 b __real_stubs_start + (vector_pabt - __stubs_start)
698 b __real_stubs_start + (vector_dabt - __stubs_start)
699 b __real_stubs_start + (vector_addrexcptn - __stubs_start)
700 b __real_stubs_start + (vector_irq - __stubs_start)
701 b __real_stubs_start + (vector_fiq - __stubs_start)
702
703ENTRY(__trap_init)
704 stmfd sp!, {r4 - r6, lr}
705
706 mov r0, #0xff000000
707 orr r0, r0, #0x00ff0000 @ high vectors position
708 adr r1, .LCvectors @ set up the vectors
709 ldmia r1, {r1, r2, r3, r4, r5, r6, ip, lr}
710 stmia r0, {r1, r2, r3, r4, r5, r6, ip, lr}
711
712 add r2, r0, #0x200
713 adr r0, __stubs_start @ copy stubs to 0x200
714 adr r1, __stubs_end
7151: ldr r3, [r0], #4
716 str r3, [r2], #4
717 cmp r0, r1
718 blt 1b
719 LOADREGS(fd, sp!, {r4 - r6, pc})
720
721 .data
722
723/*
724 * Do not reorder these, and do not insert extra data between...
725 */
726
727__temp_irq:
728 .word 0 @ saved lr_irq
729 .word 0 @ saved spsr_irq
730 .word -1 @ old_r0
731__temp_und:
732 .word 0 @ Saved lr_und
733 .word 0 @ Saved spsr_und
734 .word -1 @ old_r0
735__temp_abt:
736 .word 0 @ Saved lr_abt
737 .word 0 @ Saved spsr_abt
738 .word -1 @ old_r0
739
740 .globl cr_alignment
741 .globl cr_no_alignment
742cr_alignment:
743 .space 4
744cr_no_alignment:
745 .space 4