tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
14
15_GLOBAL(xmon_setjmp)
16 mflr r0
17 PPC_STL r0,0(r3)
18 PPC_STL r1,SZL(r3)
19 PPC_STL r2,2*SZL(r3)
20 mfcr r0
21 PPC_STL r0,3*SZL(r3)
22 PPC_STL r13,4*SZL(r3)
23 PPC_STL r14,5*SZL(r3)
24 PPC_STL r15,6*SZL(r3)
25 PPC_STL r16,7*SZL(r3)
26 PPC_STL r17,8*SZL(r3)
27 PPC_STL r18,9*SZL(r3)
28 PPC_STL r19,10*SZL(r3)
29 PPC_STL r20,11*SZL(r3)
30 PPC_STL r21,12*SZL(r3)
31 PPC_STL r22,13*SZL(r3)
32 PPC_STL r23,14*SZL(r3)
33 PPC_STL r24,15*SZL(r3)
34 PPC_STL r25,16*SZL(r3)
35 PPC_STL r26,17*SZL(r3)
36 PPC_STL r27,18*SZL(r3)
37 PPC_STL r28,19*SZL(r3)
38 PPC_STL r29,20*SZL(r3)
39 PPC_STL r30,21*SZL(r3)
40 PPC_STL r31,22*SZL(r3)
41 li r3,0
42 blr
43
44_GLOBAL(xmon_longjmp)
45 PPC_LCMPI r4,0
46 bne 1f
47 li r4,1
481: PPC_LL r13,4*SZL(r3)
49 PPC_LL r14,5*SZL(r3)
50 PPC_LL r15,6*SZL(r3)
51 PPC_LL r16,7*SZL(r3)
52 PPC_LL r17,8*SZL(r3)
53 PPC_LL r18,9*SZL(r3)
54 PPC_LL r19,10*SZL(r3)
55 PPC_LL r20,11*SZL(r3)
56 PPC_LL r21,12*SZL(r3)
57 PPC_LL r22,13*SZL(r3)
58 PPC_LL r23,14*SZL(r3)
59 PPC_LL r24,15*SZL(r3)
60 PPC_LL r25,16*SZL(r3)
61 PPC_LL r26,17*SZL(r3)
62 PPC_LL r27,18*SZL(r3)
63 PPC_LL r28,19*SZL(r3)
64 PPC_LL r29,20*SZL(r3)
65 PPC_LL r30,21*SZL(r3)
66 PPC_LL r31,22*SZL(r3)
67 PPC_LL r0,3*SZL(r3)
68 mtcrf 0x38,r0
69 PPC_LL r0,0(r3)
70 PPC_LL r1,SZL(r3)
71 PPC_LL r2,2*SZL(r3)
72 mtlr r0
73 mr r3,r4
74 blr
75
76/*
77 * Grab the register values as they are now.
78 * This won't do a particularily good job because we really
79 * want our caller's caller's registers, and our caller has
80 * already executed its prologue.
81 * ToDo: We could reach back into the caller's save area to do
82 * a better job of representing the caller's state (note that
83 * that will be different for 32-bit and 64-bit, because of the
84 * different ABIs, though).
85 */
86_GLOBAL(xmon_save_regs)
87 PPC_STL r0,0*SZL(r3)
88 PPC_STL r2,2*SZL(r3)
89 PPC_STL r3,3*SZL(r3)
90 PPC_STL r4,4*SZL(r3)
91 PPC_STL r5,5*SZL(r3)
92 PPC_STL r6,6*SZL(r3)
93 PPC_STL r7,7*SZL(r3)
94 PPC_STL r8,8*SZL(r3)
95 PPC_STL r9,9*SZL(r3)
96 PPC_STL r10,10*SZL(r3)
97 PPC_STL r11,11*SZL(r3)
98 PPC_STL r12,12*SZL(r3)
99 PPC_STL r13,13*SZL(r3)
100 PPC_STL r14,14*SZL(r3)
101 PPC_STL r15,15*SZL(r3)
102 PPC_STL r16,16*SZL(r3)
103 PPC_STL r17,17*SZL(r3)
104 PPC_STL r18,18*SZL(r3)
105 PPC_STL r19,19*SZL(r3)
106 PPC_STL r20,20*SZL(r3)
107 PPC_STL r21,21*SZL(r3)
108 PPC_STL r22,22*SZL(r3)
109 PPC_STL r23,23*SZL(r3)
110 PPC_STL r24,24*SZL(r3)
111 PPC_STL r25,25*SZL(r3)
112 PPC_STL r26,26*SZL(r3)
113 PPC_STL r27,27*SZL(r3)
114 PPC_STL r28,28*SZL(r3)
115 PPC_STL r29,29*SZL(r3)
116 PPC_STL r30,30*SZL(r3)
117 PPC_STL r31,31*SZL(r3)
118 /* go up one stack frame for SP */
119 PPC_LL r4,0(r1)
120 PPC_STL r4,1*SZL(r3)
121 /* get caller's LR */
122 PPC_LL r0,LRSAVE(r4)
123 PPC_STL r0,_NIP-STACK_FRAME_OVERHEAD(r3)
124 PPC_STL r0,_LINK-STACK_FRAME_OVERHEAD(r3)
125 mfmsr r0
126 PPC_STL r0,_MSR-STACK_FRAME_OVERHEAD(r3)
127 mfctr r0
128 PPC_STL r0,_CTR-STACK_FRAME_OVERHEAD(r3)
129 mfxer r0
130 PPC_STL r0,_XER-STACK_FRAME_OVERHEAD(r3)
131 mfcr r0
132 PPC_STL r0,_CCR-STACK_FRAME_OVERHEAD(r3)
133 li r0,0
134 PPC_STL r0,_TRAP-STACK_FRAME_OVERHEAD(r3)
135 blr