aboutsummaryrefslogtreecommitdiff
path: root/arch/x86/ia32/ia32entry.S
blob: 8ef8876666b2ed5aaabcc6f21d7129fde453ca75 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
/*
 * Compatibility mode system call entry point for x86-64. 
 * 		
 * Copyright 2000-2002 Andi Kleen, SuSE Labs.
 */		 

#include <asm/dwarf2.h>
#include <asm/calling.h>
#include <asm/asm-offsets.h>
#include <asm/current.h>
#include <asm/errno.h>
#include <asm/ia32_unistd.h>	
#include <asm/thread_info.h>	
#include <asm/segment.h>
#include <asm/irqflags.h>
#include <linux/linkage.h>

/* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
#include <linux/elf-em.h>
#define AUDIT_ARCH_I386		(EM_386|__AUDIT_ARCH_LE)
#define __AUDIT_ARCH_LE	   0x40000000

#ifndef CONFIG_AUDITSYSCALL
#define sysexit_audit int_ret_from_sys_call
#define sysretl_audit int_ret_from_sys_call
#endif

#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)

	.macro IA32_ARG_FIXUP noebp=0
	movl	%edi,%r8d
	.if \noebp
	.else
	movl	%ebp,%r9d
	.endif
	xchg	%ecx,%esi
	movl	%ebx,%edi
	movl	%edx,%edx	/* zero extension */
	.endm 

	/* clobbers %eax */	
	.macro  CLEAR_RREGS _r9=rax
	xorl 	%eax,%eax
	movq	%rax,R11(%rsp)
	movq	%rax,R10(%rsp)
	movq	%\_r9,R9(%rsp)
	movq	%rax,R8(%rsp)
	.endm

	/*
	 * Reload arg registers from stack in case ptrace changed them.
	 * We don't reload %eax because syscall_trace_enter() returned
	 * the value it wants us to use in the table lookup.
	 */
	.macro LOAD_ARGS32 offset, _r9=0
	.if \_r9
	movl \offset+16(%rsp),%r9d
	.endif
	movl \offset+40(%rsp),%ecx
	movl \offset+48(%rsp),%edx
	movl \offset+56(%rsp),%esi
	movl \offset+64(%rsp),%edi
	.endm
	
	.macro CFI_STARTPROC32 simple
	CFI_STARTPROC	\simple
	CFI_UNDEFINED	r8
	CFI_UNDEFINED	r9
	CFI_UNDEFINED	r10
	CFI_UNDEFINED	r11
	CFI_UNDEFINED	r12
	CFI_UNDEFINED	r13
	CFI_UNDEFINED	r14
	CFI_UNDEFINED	r15
	.endm

#ifdef CONFIG_PARAVIRT
ENTRY(native_usergs_sysret32)
	swapgs
	sysretl
ENDPROC(native_usergs_sysret32)

ENTRY(native_irq_enable_sysexit)
	swapgs
	sti
	sysexit
ENDPROC(native_irq_enable_sysexit)
#endif

/*
 * 32bit SYSENTER instruction entry.
 *
 * Arguments:
 * %eax	System call number.
 * %ebx Arg1
 * %ecx Arg2
 * %edx Arg3
 * %esi Arg4
 * %edi Arg5
 * %ebp user stack
 * 0(%ebp) Arg6	
 * 	
 * Interrupts off.
 *	
 * This is purely a fast path. For anything complicated we use the int 0x80
 * path below.	Set up a complete hardware stack frame to share code
 * with the int 0x80 path.
 */ 	
ENTRY(ia32_sysenter_target)
	CFI_STARTPROC32	simple
	CFI_SIGNAL_FRAME
	CFI_DEF_CFA	rsp,0
	CFI_REGISTER	rsp,rbp
	SWAPGS_UNSAFE_STACK
	movq	%gs:pda_kernelstack, %rsp
	addq	$(PDA_STACKOFFSET),%rsp	
	/*
	 * No need to follow this irqs on/off section: the syscall
	 * disabled irqs, here we enable it straight after entry:
	 */
	ENABLE_INTERRUPTS(CLBR_NONE)
 	movl	%ebp,%ebp		/* zero extension */
	pushq	$__USER32_DS
	CFI_ADJUST_CFA_OFFSET 8
	/*CFI_REL_OFFSET ss,0*/
	pushq	%rbp
	CFI_ADJUST_CFA_OFFSET 8
	CFI_REL_OFFSET rsp,0
	pushfq
	CFI_ADJUST_CFA_OFFSET 8
	/*CFI_REL_OFFSET rflags,0*/
	movl	8*3-THREAD_SIZE+TI_sysenter_return(%rsp), %r10d
	CFI_REGISTER rip,r10
	pushq	$__USER32_CS
	CFI_ADJUST_CFA_OFFSET 8
	/*CFI_REL_OFFSET cs,0*/
	movl	%eax, %eax
	pushq	%r10
	CFI_ADJUST_CFA_OFFSET 8
	CFI_REL_OFFSET rip,0
	pushq	%rax
	CFI_ADJUST_CFA_OFFSET 8
	cld
	SAVE_ARGS 0,0,1
 	/* no need to do an access_ok check here because rbp has been
 	   32bit zero extended */ 
1:	movl	(%rbp),%ebp
 	.section __ex_table,"a"
 	.quad 1b,ia32_badarg
 	.previous	
	GET_THREAD_INFO(%r10)
	orl    $TS_COMPAT,TI_status(%r10)
	testl  $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
	CFI_REMEMBER_STATE
	jnz  sysenter_tracesys
	cmpl	$(IA32_NR_syscalls-1),%eax
	ja	ia32_badsys
sysenter_do_call:
	IA32_ARG_FIXUP
sysenter_dispatch:
	call	*ia32_sys_call_table(,%rax,8)
	movq	%rax,RAX-ARGOFFSET(%rsp)
	GET_THREAD_INFO(%r10)
	DISABLE_INTERRUPTS(CLBR_NONE)
	TRACE_IRQS_OFF
	testl	$_TIF_ALLWORK_MASK,TI_flags(%r10)
	jnz	sysexit_audit
sysexit_from_sys_call:
	andl    $~TS_COMPAT,TI_status(%r10)
	/* clear IF, that popfq doesn't enable interrupts early */
	andl  $~0x200,EFLAGS-R11(%rsp) 
	movl	RIP-R11(%rsp),%edx		/* User %eip */
	CFI_REGISTER rip,rdx
	RESTORE_ARGS 1,24,1,1,1,1
	popfq
	CFI_ADJUST_CFA_OFFSET -8
	/*CFI_RESTORE rflags*/
	popq	%rcx				/* User %esp */
	CFI_ADJUST_CFA_OFFSET -8
	CFI_REGISTER rsp,rcx
	TRACE_IRQS_ON
	ENABLE_INTERRUPTS_SYSEXIT32

#ifdef CONFIG_AUDITSYSCALL
	.macro auditsys_entry_common
	movl %esi,%r9d			/* 6th arg: 4th syscall arg */
	movl %edx,%r8d			/* 5th arg: 3rd syscall arg */
	/* (already in %ecx)		   4th arg: 2nd syscall arg */
	movl %ebx,%edx			/* 3rd arg: 1st syscall arg */
	movl %eax,%esi			/* 2nd arg: syscall number */
	movl $AUDIT_ARCH_I386,%edi	/* 1st arg: audit arch */
	call audit_syscall_entry
	movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall number */
	cmpl $(IA32_NR_syscalls-1),%eax
	ja ia32_badsys
	movl %ebx,%edi			/* reload 1st syscall arg */
	movl RCX-ARGOFFSET(%rsp),%esi	/* reload 2nd syscall arg */
	movl RDX-ARGOFFSET(%rsp),%edx	/* reload 3rd syscall arg */
	movl RSI-ARGOFFSET(%rsp),%ecx	/* reload 4th syscall arg */
	movl RDI-ARGOFFSET(%rsp),%r8d	/* reload 5th syscall arg */
	.endm

	.macro auditsys_exit exit,ebpsave=RBP
	testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
	jnz int_ret_from_sys_call
	TRACE_IRQS_ON
	sti
	movl %eax,%esi		/* second arg, syscall return value */
	cmpl $0,%eax		/* is it < 0? */
	setl %al		/* 1 if so, 0 if not */
	movzbl %al,%edi		/* zero-extend that into %edi */
	inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */
	call audit_syscall_exit
	GET_THREAD_INFO(%r10)
	movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall return value */
	movl \ebpsave-ARGOFFSET(%rsp),%ebp /* reload user register value */
	movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
	cli
	TRACE_IRQS_OFF
	testl %edi,TI_flags(%r10)
	jnz int_with_check
	jmp \exit
	.endm

sysenter_auditsys:
	CFI_RESTORE_STATE
	auditsys_entry_common
	movl %ebp,%r9d			/* reload 6th syscall arg */
	jmp sysenter_dispatch

sysexit_audit:
	auditsys_exit sysexit_from_sys_call
#endif

sysenter_tracesys:
#ifdef CONFIG_AUDITSYSCALL
	testl	$(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
	jz	sysenter_auditsys
#endif
	SAVE_REST
	CLEAR_RREGS
	movq	$-ENOSYS,RAX(%rsp)/* ptrace can change this for a bad syscall */
	movq	%rsp,%rdi        /* &pt_regs -> arg1 */
	call	syscall_trace_enter
	LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */
	RESTORE_REST
	cmpl	$(IA32_NR_syscalls-1),%eax
	ja	int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */
	jmp	sysenter_do_call
	CFI_ENDPROC
ENDPROC(ia32_sysenter_target)

/*
 * 32bit SYSCALL instruction entry.
 *
 * Arguments:
 * %eax	System call number.
 * %ebx Arg1
 * %ecx return EIP 
 * %edx Arg3
 * %esi Arg4
 * %edi Arg5
 * %ebp Arg2    [note: not saved in the stack frame, should not be touched]
 * %esp user stack 
 * 0(%esp) Arg6
 * 	
 * Interrupts off.
 *	
 * This is purely a fast path. For anything complicated we use the int 0x80
 * path below.	Set up a complete hardware stack frame to share code
 * with the int 0x80 path.	
 */ 	
ENTRY(ia32_cstar_target)
	CFI_STARTPROC32	simple
	CFI_SIGNAL_FRAME
	CFI_DEF_CFA	rsp,PDA_STACKOFFSET
	CFI_REGISTER	rip,rcx
	/*CFI_REGISTER	rflags,r11*/
	SWAPGS_UNSAFE_STACK
	movl	%esp,%r8d
	CFI_REGISTER	rsp,r8
	movq	%gs:pda_kernelstack,%rsp
	/*
	 * No need to follow this irqs on/off section: the syscall
	 * disabled irqs and here we enable it straight after entry:
	 */
	ENABLE_INTERRUPTS(CLBR_NONE)
	SAVE_ARGS 8,1,1
	movl 	%eax,%eax	/* zero extension */
	movq	%rax,ORIG_RAX-ARGOFFSET(%rsp)
	movq	%rcx,RIP-ARGOFFSET(%rsp)
	CFI_REL_OFFSET rip,RIP-ARGOFFSET
	movq	%rbp,RCX-ARGOFFSET(%rsp) /* this lies slightly to ptrace */
	movl	%ebp,%ecx
	movq	$__USER32_CS,CS-ARGOFFSET(%rsp)
	movq	$__USER32_DS,SS-ARGOFFSET(%rsp)
	movq	%r11,EFLAGS-ARGOFFSET(%rsp)
	/*CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/
	movq	%r8,RSP-ARGOFFSET(%rsp)	
	CFI_REL_OFFSET rsp,RSP-ARGOFFSET
	/* no need to do an access_ok check here because r8 has been
	   32bit zero extended */ 
	/* hardware stack frame is complete now */	
1:	movl	(%r8),%r9d
	.section __ex_table,"a"
	.quad 1b,ia32_badarg
	.previous	
	GET_THREAD_INFO(%r10)
	orl   $TS_COMPAT,TI_status(%r10)
	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
	CFI_REMEMBER_STATE
	jnz   cstar_tracesys
	cmpl $IA32_NR_syscalls-1,%eax
	ja  ia32_badsys
cstar_do_call:
	IA32_ARG_FIXUP 1
cstar_dispatch:
	call *ia32_sys_call_table(,%rax,8)
	movq %rax,RAX-ARGOFFSET(%rsp)
	GET_THREAD_INFO(%r10)
	DISABLE_INTERRUPTS(CLBR_NONE)
	TRACE_IRQS_OFF
	testl $_TIF_ALLWORK_MASK,TI_flags(%r10)
	jnz sysretl_audit
sysretl_from_sys_call:
	andl $~TS_COMPAT,TI_status(%r10)
	RESTORE_ARGS 1,-ARG_SKIP,1,1,1
	movl RIP-ARGOFFSET(%rsp),%ecx
	CFI_REGISTER rip,rcx
	movl EFLAGS-ARGOFFSET(%rsp),%r11d	
	/*CFI_REGISTER rflags,r11*/
	TRACE_IRQS_ON
	movl RSP-ARGOFFSET(%rsp),%esp
	CFI_RESTORE rsp
	USERGS_SYSRET32
	
#ifdef CONFIG_AUDITSYSCALL
cstar_auditsys:
	CFI_RESTORE_STATE
	movl %r9d,R9-ARGOFFSET(%rsp)	/* register to be clobbered by call */
	auditsys_entry_common
	movl R9-ARGOFFSET(%rsp),%r9d	/* reload 6th syscall arg */
	jmp cstar_dispatch

sysretl_audit:
	auditsys_exit sysretl_from_sys_call, RCX /* user %ebp in RCX slot */
#endif

cstar_tracesys:
#ifdef CONFIG_AUDITSYSCALL
	testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
	jz cstar_auditsys
#endif
	xchgl %r9d,%ebp
	SAVE_REST
	CLEAR_RREGS r9
	movq $-ENOSYS,RAX(%rsp)	/* ptrace can change this for a bad syscall */
	movq %rsp,%rdi        /* &pt_regs -> arg1 */
	call syscall_trace_enter
	LOAD_ARGS32 ARGOFFSET, 1  /* reload args from stack in case ptrace changed it */
	RESTORE_REST
	xchgl %ebp,%r9d
	cmpl $(IA32_NR_syscalls-1),%eax
	ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */
	jmp cstar_do_call
END(ia32_cstar_target)
				
ia32_badarg:
	movq $-EFAULT,%rax
	jmp ia32_sysret
	CFI_ENDPROC

/* 
 * Emulated IA32 system calls via int 0x80. 
 *
 * Arguments:	 
 * %eax	System call number.
 * %ebx Arg1
 * %ecx Arg2
 * %edx Arg3
 * %esi Arg4
 * %edi Arg5
 * %ebp Arg6    [note: not saved in the stack frame, should not be touched]
 *
 * Notes:
 * Uses the same stack frame as the x86-64 version.	
 * All registers except %eax must be saved (but ptrace may violate that)
 * Arguments are zero extended. For system calls that want sign extension and
 * take long arguments a wrapper is needed. Most calls can just be called
 * directly.
 * Assumes it is only called from user space and entered with interrupts off.	
 */ 				

ENTRY(ia32_syscall)
	CFI_STARTPROC32	simple
	CFI_SIGNAL_FRAME
	CFI_DEF_CFA	rsp,SS+8-RIP
	/*CFI_REL_OFFSET	ss,SS-RIP*/
	CFI_REL_OFFSET	rsp,RSP-RIP
	/*CFI_REL_OFFSET	rflags,EFLAGS-RIP*/
	/*CFI_REL_OFFSET	cs,CS-RIP*/
	CFI_REL_OFFSET	rip,RIP-RIP
	PARAVIRT_ADJUST_EXCEPTION_FRAME
	SWAPGS
	/*
	 * No need to follow this irqs on/off section: the syscall
	 * disabled irqs and here we enable it straight after entry:
	 */
	ENABLE_INTERRUPTS(CLBR_NONE)
	movl %eax,%eax
	pushq %rax
	CFI_ADJUST_CFA_OFFSET 8
	cld
	/* note the registers are not zero extended to the sf.
	   this could be a problem. */
	SAVE_ARGS 0,0,1
	GET_THREAD_INFO(%r10)
	orl   $TS_COMPAT,TI_status(%r10)
	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
	jnz ia32_tracesys
	cmpl $(IA32_NR_syscalls-1),%eax
	ja ia32_badsys
ia32_do_call:
	IA32_ARG_FIXUP
	call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
ia32_sysret:
	movq %rax,RAX-ARGOFFSET(%rsp)
	jmp int_ret_from_sys_call 

ia32_tracesys:			 
	SAVE_REST
	CLEAR_RREGS
	movq $-ENOSYS,RAX(%rsp)	/* ptrace can change this for a bad syscall */
	movq %rsp,%rdi        /* &pt_regs -> arg1 */
	call syscall_trace_enter
	LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */
	RESTORE_REST
	cmpl $(IA32_NR_syscalls-1),%eax
	ja  int_ret_from_sys_call	/* ia32_tracesys has set RAX(%rsp) */
	jmp ia32_do_call
END(ia32_syscall)

ia32_badsys:
	movq $0,ORIG_RAX-ARGOFFSET(%rsp)
	movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
	jmp int_ret_from_sys_call

quiet_ni_syscall:
	movq $-ENOSYS,%rax
	ret
	CFI_ENDPROC
	
	.macro PTREGSCALL label, func, arg
	.globl \label
\label:
	leaq \func(%rip),%rax
	leaq -ARGOFFSET+8(%rsp),\arg	/* 8 for return address */
	jmp  ia32_ptregs_common	
	.endm

	CFI_STARTPROC32

	PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi
	PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi
	PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx
	PTREGSCALL stub32_execve, sys32_execve, %rcx
	PTREGSCALL stub32_fork, sys_fork, %rdi
	PTREGSCALL stub32_clone, sys32_clone, %rdx
	PTREGSCALL stub32_vfork, sys_vfork, %rdi
	PTREGSCALL stub32_iopl, sys_iopl, %rsi

ENTRY(ia32_ptregs_common)
	popq %r11
	CFI_ENDPROC
	CFI_STARTPROC32	simple
	CFI_SIGNAL_FRAME
	CFI_DEF_CFA	rsp,SS+8-ARGOFFSET
	CFI_REL_OFFSET	rax,RAX-ARGOFFSET
	CFI_REL_OFFSET	rcx,RCX-ARGOFFSET
	CFI_REL_OFFSET	rdx,RDX-ARGOFFSET
	CFI_REL_OFFSET	rsi,RSI-ARGOFFSET
	CFI_REL_OFFSET	rdi,RDI-ARGOFFSET
	CFI_REL_OFFSET	rip,RIP-ARGOFFSET
/*	CFI_REL_OFFSET	cs,CS-ARGOFFSET*/
/*	CFI_REL_OFFSET	rflags,EFLAGS-ARGOFFSET*/
	CFI_REL_OFFSET	rsp,RSP-ARGOFFSET
/*	CFI_REL_OFFSET	ss,SS-ARGOFFSET*/
	SAVE_REST
	call *%rax
	RESTORE_REST
	jmp  ia32_sysret	/* misbalances the return cache */
	CFI_ENDPROC
END(ia32_ptregs_common)

	.section .rodata,"a"
	.align 8
ia32_sys_call_table:
	.quad sys_restart_syscall
	.quad sys_exit
	.quad stub32_fork
	.quad sys_read
	.quad sys_write
	.quad compat_sys_open		/* 5 */
	.quad sys_close
	.quad sys32_waitpid
	.quad sys_creat
	.quad sys_link
	.quad sys_unlink		/* 10 */
	.quad stub32_execve
	.quad sys_chdir
	.quad compat_sys_time
	.quad sys_mknod
	.quad sys_chmod		/* 15 */
	.quad sys_lchown16
	.quad quiet_ni_syscall			/* old break syscall holder */
	.quad sys_stat
	.quad sys32_lseek
	.quad sys_getpid		/* 20 */
	.quad compat_sys_mount	/* mount  */
	.quad sys_oldumount	/* old_umount  */
	.quad sys_setuid16
	.quad sys_getuid16
	.quad compat_sys_stime	/* stime */		/* 25 */
	.quad compat_sys_ptrace	/* ptrace */
	.quad sys_alarm
	.quad sys_fstat	/* (old)fstat */
	.quad sys_pause
	.quad compat_sys_utime	/* 30 */
	.quad quiet_ni_syscall	/* old stty syscall holder */
	.quad quiet_ni_syscall	/* old gtty syscall holder */
	.quad sys_access
	.quad sys_nice	
	.quad quiet_ni_syscall	/* 35 */	/* old ftime syscall holder */
	.quad sys_sync
	.quad sys32_kill
	.quad sys_rename
	.quad sys_mkdir
	.quad sys_rmdir		/* 40 */
	.quad sys_dup
	.quad sys32_pipe
	.quad compat_sys_times
	.quad quiet_ni_syscall			/* old prof syscall holder */
	.quad sys_brk		/* 45 */
	.quad sys_setgid16
	.quad sys_getgid16
	.quad sys_signal
	.quad sys_geteuid16
	.quad sys_getegid16	/* 50 */
	.quad sys_acct
	.quad sys_umount			/* new_umount */
	.quad quiet_ni_syscall			/* old lock syscall holder */
	.quad compat_sys_ioctl
	.quad compat_sys_fcntl64		/* 55 */
	.quad quiet_ni_syscall			/* old mpx syscall holder */
	.quad sys_setpgid
	.quad quiet_ni_syscall			/* old ulimit syscall holder */
	.quad sys32_olduname
	.quad sys_umask		/* 60 */
	.quad sys_chroot
	.quad compat_sys_ustat
	.quad sys_dup2
	.quad sys_getppid
	.quad sys_getpgrp		/* 65 */
	.quad sys_setsid
	.quad sys32_sigaction
	.quad sys_sgetmask
	.quad sys_ssetmask
	.quad sys_setreuid16	/* 70 */
	.quad sys_setregid16
	.quad sys32_sigsuspend
	.quad compat_sys_sigpending
	.quad sys_sethostname
	.quad compat_sys_setrlimit	/* 75 */
	.quad compat_sys_old_getrlimit	/* old_getrlimit */
	.quad compat_sys_getrusage
	.quad compat_sys_gettimeofday
	.quad compat_sys_settimeofday
	.quad sys_getgroups16	/* 80 */
	.quad sys_setgroups16
	.quad sys32_old_select
	.quad sys_symlink
	.quad sys_lstat
	.quad sys_readlink		/* 85 */
	.quad sys_uselib
	.quad sys_swapon
	.quad sys_reboot
	.quad compat_sys_old_readdir
	.quad sys32_mmap		/* 90 */
	.quad sys_munmap
	.quad sys_truncate
	.quad sys_ftruncate
	.quad sys_fchmod
	.quad sys_fchown16		/* 95 */
	.quad sys_getpriority
	.quad sys_setpriority
	.quad quiet_ni_syscall			/* old profil syscall holder */
	.quad compat_sys_statfs
	.quad compat_sys_fstatfs		/* 100 */
	.quad sys_ioperm
	.quad compat_sys_socketcall
	.quad sys_syslog
	.quad compat_sys_setitimer
	.quad compat_sys_getitimer	/* 105 */
	.quad compat_sys_newstat
	.quad compat_sys_newlstat
	.quad compat_sys_newfstat
	.quad sys32_uname
	.quad stub32_iopl		/* 110 */
	.quad sys_vhangup
	.quad quiet_ni_syscall	/* old "idle" system call */
	.quad sys32_vm86_warning	/* vm86old */ 
	.quad compat_sys_wait4
	.quad sys_swapoff		/* 115 */
	.quad compat_sys_sysinfo
	.quad sys32_ipc
	.quad sys_fsync
	.quad stub32_sigreturn
	.quad stub32_clone		/* 120 */
	.quad sys_setdomainname
	.quad sys_uname
	.quad sys_modify_ldt
	.quad compat_sys_adjtimex
	.quad sys32_mprotect		/* 125 */
	.quad compat_sys_sigprocmask
	.quad quiet_ni_syscall		/* create_module */
	.quad sys_init_module
	.quad sys_delete_module
	.quad quiet_ni_syscall		/* 130  get_kernel_syms */
	.quad sys32_quotactl
	.quad sys_getpgid
	.quad sys_fchdir
	.quad quiet_ni_syscall	/* bdflush */
	.quad sys_sysfs		/* 135 */
	.quad sys_personality
	.quad quiet_ni_syscall	/* for afs_syscall */
	.quad sys_setfsuid16
	.quad sys_setfsgid16
	.quad sys_llseek		/* 140 */
	.quad compat_sys_getdents
	.quad compat_sys_select
	.quad sys_flock
	.quad sys_msync
	.quad compat_sys_readv		/* 145 */
	.quad compat_sys_writev
	.quad sys_getsid
	.quad sys_fdatasync
	.quad sys32_sysctl	/* sysctl */
	.quad sys_mlock		/* 150 */
	.quad sys_munlock
	.quad sys_mlockall
	.quad sys_munlockall
	.quad sys_sched_setparam
	.quad sys_sched_getparam   /* 155 */
	.quad sys_sched_setscheduler
	.quad sys_sched_getscheduler
	.quad sys_sched_yield
	.quad sys_sched_get_priority_max
	.quad sys_sched_get_priority_min  /* 160 */
	.quad sys32_sched_rr_get_interval
	.quad compat_sys_nanosleep
	.quad sys_mremap
	.quad sys_setresuid16
	.quad sys_getresuid16	/* 165 */
	.quad sys32_vm86_warning	/* vm86 */ 
	.quad quiet_ni_syscall	/* query_module */
	.quad sys_poll
	.quad compat_sys_nfsservctl
	.quad sys_setresgid16	/* 170 */
	.quad sys_getresgid16
	.quad sys_prctl
	.quad stub32_rt_sigreturn
	.quad sys32_rt_sigaction
	.quad sys32_rt_sigprocmask	/* 175 */
	.quad sys32_rt_sigpending
	.quad compat_sys_rt_sigtimedwait
	.quad sys32_rt_sigqueueinfo
	.quad sys_rt_sigsuspend
	.quad sys32_pread		/* 180 */
	.quad sys32_pwrite
	.quad sys_chown16
	.quad sys_getcwd
	.quad sys_capget
	.quad sys_capset
	.quad stub32_sigaltstack
	.quad sys32_sendfile
	.quad quiet_ni_syscall		/* streams1 */
	.quad quiet_ni_syscall		/* streams2 */
	.quad stub32_vfork            /* 190 */
	.quad compat_sys_getrlimit
	.quad sys32_mmap2
	.quad sys32_truncate64
	.quad sys32_ftruncate64
	.quad sys32_stat64		/* 195 */
	.quad sys32_lstat64
	.quad sys32_fstat64
	.quad sys_lchown
	.quad sys_getuid
	.quad sys_getgid		/* 200 */
	.quad sys_geteuid
	.quad sys_getegid
	.quad sys_setreuid
	.quad sys_setregid
	.quad sys_getgroups	/* 205 */
	.quad sys_setgroups
	.quad sys_fchown
	.quad sys_setresuid
	.quad sys_getresuid
	.quad sys_setresgid	/* 210 */
	.quad sys_getresgid
	.quad sys_chown
	.quad sys_setuid
	.quad sys_setgid
	.quad sys_setfsuid		/* 215 */
	.quad sys_setfsgid
	.quad sys_pivot_root
	.quad sys_mincore
	.quad sys_madvise
	.quad compat_sys_getdents64	/* 220 getdents64 */
	.quad compat_sys_fcntl64	
	.quad quiet_ni_syscall		/* tux */
	.quad quiet_ni_syscall    	/* security */
	.quad sys_gettid	
	.quad sys32_readahead	/* 225 */
	.quad sys_setxattr
	.quad sys_lsetxattr
	.quad sys_fsetxattr
	.quad sys_getxattr
	.quad sys_lgetxattr	/* 230 */
	.quad sys_fgetxattr
	.quad sys_listxattr
	.quad sys_llistxattr
	.quad sys_flistxattr
	.quad sys_removexattr	/* 235 */
	.quad sys_lremovexattr
	.quad sys_fremovexattr
	.quad sys_tkill
	.quad sys_sendfile64 
	.quad compat_sys_futex		/* 240 */
	.quad compat_sys_sched_setaffinity
	.quad compat_sys_sched_getaffinity
	.quad sys_set_thread_area
	.quad sys_get_thread_area
	.quad compat_sys_io_setup	/* 245 */
	.quad sys_io_destroy
	.quad compat_sys_io_getevents
	.quad compat_sys_io_submit
	.quad sys_io_cancel
	.quad sys32_fadvise64		/* 250 */
	.quad quiet_ni_syscall 	/* free_huge_pages */
	.quad sys_exit_group
	.quad sys32_lookup_dcookie
	.quad sys_epoll_create
	.quad sys_epoll_ctl		/* 255 */
	.quad sys_epoll_wait
	.quad sys_remap_file_pages
	.quad sys_set_tid_address
	.quad compat_sys_timer_create
	.quad compat_sys_timer_settime	/* 260 */
	.quad compat_sys_timer_gettime
	.quad sys_timer_getoverrun
	.quad sys_timer_delete
	.quad compat_sys_clock_settime
	.quad compat_sys_clock_gettime	/* 265 */
	.quad compat_sys_clock_getres
	.quad compat_sys_clock_nanosleep
	.quad compat_sys_statfs64
	.quad compat_sys_fstatfs64
	.quad sys_tgkill		/* 270 */
	.quad compat_sys_utimes
	.quad sys32_fadvise64_64
	.quad quiet_ni_syscall	/* sys_vserver */
	.quad sys_mbind
	.quad compat_sys_get_mempolicy	/* 275 */
	.quad sys_set_mempolicy
	.quad compat_sys_mq_open
	.quad sys_mq_unlink
	.quad compat_sys_mq_timedsend
	.quad compat_sys_mq_timedreceive	/* 280 */
	.quad compat_sys_mq_notify
	.quad compat_sys_mq_getsetattr
	.quad compat_sys_kexec_load	/* reserved for kexec */
	.quad compat_sys_waitid
	.quad quiet_ni_syscall		/* 285: sys_altroot */
	.quad sys_add_key
	.quad sys_request_key
	.quad sys_keyctl
	.quad sys_ioprio_set
	.quad sys_ioprio_get		/* 290 */
	.quad sys_inotify_init
	.quad sys_inotify_add_watch
	.quad sys_inotify_rm_watch
	.quad sys_migrate_pages
	.quad compat_sys_openat		/* 295 */
	.quad sys_mkdirat
	.quad sys_mknodat
	.quad sys_fchownat
	.quad compat_sys_futimesat
	.quad sys32_fstatat		/* 300 */
	.quad sys_unlinkat
	.quad sys_renameat
	.quad sys_linkat
	.quad sys_symlinkat
	.quad sys_readlinkat		/* 305 */
	.quad sys_fchmodat
	.quad sys_faccessat
	.quad compat_sys_pselect6
	.quad compat_sys_ppoll
	.quad sys_unshare		/* 310 */
	.quad compat_sys_set_robust_list
	.quad compat_sys_get_robust_list
	.quad sys_splice
	.quad sys32_sync_file_range
	.quad sys_tee			/* 315 */
	.quad compat_sys_vmsplice
	.quad compat_sys_move_pages
	.quad sys_getcpu
	.quad sys_epoll_pwait
	.quad compat_sys_utimensat	/* 320 */
	.quad compat_sys_signalfd
	.quad sys_timerfd_create
	.quad sys_eventfd
	.quad sys32_fallocate
	.quad compat_sys_timerfd_settime	/* 325 */
	.quad compat_sys_timerfd_gettime
	.quad compat_sys_signalfd4
	.quad sys_eventfd2
	.quad sys_epoll_create1
	.quad sys_dup3			/* 330 */
	.quad sys_pipe2
	.quad sys_inotify_init1
ia32_syscall_end: