Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm-4.9 / refs/tags/FP3-REL-Q-3.A.0107 / . / arch / powerpc / kernel / ppc_save_regs.S
blob: 1b1787d528965c2304b9c01fab6c0c48407093b2 [file] [log] [blame]
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]1/*
2 * Copyright (C) 1996 Paul Mackerras.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * NOTE: assert(sizeof(buf) > 23 * sizeof(long))
10 */
11#include <asm/processor.h>
12#include <asm/ppc_asm.h>
13#include <asm/asm-offsets.h>
Stephen Rothwell46f52212010-11-18 15:06:17 +0000[diff] [blame]14#include <asm/ptrace.h>
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]15
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]16/*
17 * Grab the register values as they are now.
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300[diff] [blame]18 * This won't do a particularly good job because we really
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]19 * want our caller's caller's registers, and our caller has
20 * already executed its prologue.
21 * ToDo: We could reach back into the caller's save area to do
22 * a better job of representing the caller's state (note that
23 * that will be different for 32-bit and 64-bit, because of the
24 * different ABIs, though).
25 */
Anton Vorontsov322b4392008-12-17 10:08:55 +0000[diff] [blame]26_GLOBAL(ppc_save_regs)
David Gibson3ddfbcf2005-11-10 12:56:55 +1100[diff] [blame]27 PPC_STL r0,0*SZL(r3)
28 PPC_STL r2,2*SZL(r3)
29 PPC_STL r3,3*SZL(r3)
30 PPC_STL r4,4*SZL(r3)
31 PPC_STL r5,5*SZL(r3)
32 PPC_STL r6,6*SZL(r3)
33 PPC_STL r7,7*SZL(r3)
34 PPC_STL r8,8*SZL(r3)
35 PPC_STL r9,9*SZL(r3)
36 PPC_STL r10,10*SZL(r3)
37 PPC_STL r11,11*SZL(r3)
38 PPC_STL r12,12*SZL(r3)
39 PPC_STL r13,13*SZL(r3)
40 PPC_STL r14,14*SZL(r3)
41 PPC_STL r15,15*SZL(r3)
42 PPC_STL r16,16*SZL(r3)
43 PPC_STL r17,17*SZL(r3)
44 PPC_STL r18,18*SZL(r3)
45 PPC_STL r19,19*SZL(r3)
46 PPC_STL r20,20*SZL(r3)
47 PPC_STL r21,21*SZL(r3)
48 PPC_STL r22,22*SZL(r3)
49 PPC_STL r23,23*SZL(r3)
50 PPC_STL r24,24*SZL(r3)
51 PPC_STL r25,25*SZL(r3)
52 PPC_STL r26,26*SZL(r3)
53 PPC_STL r27,27*SZL(r3)
54 PPC_STL r28,28*SZL(r3)
55 PPC_STL r29,29*SZL(r3)
56 PPC_STL r30,30*SZL(r3)
57 PPC_STL r31,31*SZL(r3)
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]58 /* go up one stack frame for SP */
David Gibson3ddfbcf2005-11-10 12:56:55 +1100[diff] [blame]59 PPC_LL r4,0(r1)
60 PPC_STL r4,1*SZL(r3)
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]61 /* get caller's LR */
David Gibson3ddfbcf2005-11-10 12:56:55 +1100[diff] [blame]62 PPC_LL r0,LRSAVE(r4)
63 PPC_STL r0,_NIP-STACK_FRAME_OVERHEAD(r3)
64 PPC_STL r0,_LINK-STACK_FRAME_OVERHEAD(r3)
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]65 mfmsr r0
David Gibson3ddfbcf2005-11-10 12:56:55 +1100[diff] [blame]66 PPC_STL r0,_MSR-STACK_FRAME_OVERHEAD(r3)
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]67 mfctr r0
David Gibson3ddfbcf2005-11-10 12:56:55 +1100[diff] [blame]68 PPC_STL r0,_CTR-STACK_FRAME_OVERHEAD(r3)
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]69 mfxer r0
David Gibson3ddfbcf2005-11-10 12:56:55 +1100[diff] [blame]70 PPC_STL r0,_XER-STACK_FRAME_OVERHEAD(r3)
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]71 mfcr r0
David Gibson3ddfbcf2005-11-10 12:56:55 +1100[diff] [blame]72 PPC_STL r0,_CCR-STACK_FRAME_OVERHEAD(r3)
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]73 li r0,0
David Gibson3ddfbcf2005-11-10 12:56:55 +1100[diff] [blame]74 PPC_STL r0,_TRAP-STACK_FRAME_OVERHEAD(r3)
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000[diff] [blame]75 blr