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Macpaul Lin273d11e2011-12-01 12:32:10 +08001#include <linux/linkage.h>
Robin Getzf19fd872009-12-21 16:35:48 -05002
3/* save stack context for non-local goto
4 * int kgdb_setjmp(long *buf)
5 */
6
7ENTRY(_kgdb_setjmp)
8 [--SP] = p0; /* Save P0 */
9 p0 = r0;
10 r0 = [SP++]; /* Load P0 into R0 */
11
12 [p0 + 0x00] = r0; /* GP address registers */
13 [p0 + 0x04] = p1;
14 [p0 + 0x08] = p2;
15 [p0 + 0x0C] = p3;
16 [p0 + 0x10] = p4;
17 [p0 + 0x14] = p5;
18 [p0 + 0x18] = FP; /* frame pointer */
19 [p0 + 0x1C] = SP; /* stack pointer */
20
21 [p0 + 0x20] = p0; /* data regs */
22 [p0 + 0x24] = r1;
23 [p0 + 0x28] = r2;
24 [p0 + 0x2C] = r3;
25 [p0 + 0x30] = r4;
26 [p0 + 0x34] = r5;
27 [p0 + 0x38] = r6;
28 [p0 + 0x3C] = r7;
29
30 r0 = ASTAT; [p0 + 0x40] = r0;
31
32 /* loop counters */
33 r0 = LC0; [p0 + 0x44] = r0;
34 r0 = LC1; [p0 + 0x48] = r0;
35
36 /* Accumulator */
37 r0 = A0.w; [p0 + 0x4C] = r0;
38 r0.l = A0.x; [p0 + 0x50] = r0;
39 r0 = A1.w; [p0 + 0x54] = r0;
40 r0.l = A1.x; [p0 + 0x58] = r0;
41
42 /* index registers */
43 r0 = i0; [p0 + 0x5C] = r0;
44 r0 = i1; [p0 + 0x60] = r0;
45 r0 = i2; [p0 + 0x64] = r0;
46 r0 = i3; [p0 + 0x68] = r0;
47
48 /* modifier registers */
49 r0 = m0; [p0 + 0x6C] = r0;
50 r0 = m1; [p0 + 0x70] = r0;
51 r0 = m2; [p0 + 0x74] = r0;
52 r0 = m3; [p0 + 0x78] = r0;
53
54 /* length registers */
55 r0 = l0; [p0 + 0x7C] = r0;
56 r0 = l1; [p0 + 0x80] = r0;
57 r0 = l2; [p0 + 0x84] = r0;
58 r0 = l3; [p0 + 0x88] = r0;
59
60 /* base registers */
61 r0 = b0; [p0 + 0x8C] = r0;
62 r0 = b1; [p0 + 0x90] = r0;
63 r0 = b2; [p0 + 0x94] = r0;
64 r0 = b3; [p0 + 0x98] = r0;
65
66 /* store return address */
67 r0 = RETS; [p0 + 0x9C] = r0;
68
69 R0 = 0;
70 RTS;
71ENDPROC(_kgdb_setjmp)
72
73/*
74 * non-local jump to a saved stack context
75 * longjmp(long *buf, int val)
76 */
77
78ENTRY(_kgdb_longjmp)
79 p0 = r0;
80 r0 = [p0 + 0x00];
81 [--sp] = r0;
82
83 /* GP address registers - skip p0 for now*/
84 p1 = [p0 + 0x04];
85 p2 = [p0 + 0x08];
86 p3 = [p0 + 0x0C];
87 p4 = [p0 + 0x10];
88 p5 = [p0 + 0x14];
89 /* frame pointer */
90 fp = [p0 + 0x18];
91 /* stack pointer */
92 r0 = [sp++];
93 sp = [p0 + 0x1C];
94 [--sp] = r0;
95 [--sp] = r1;
96
97 /* data regs */
98 r0 = [p0 + 0x20];
99 r1 = [p0 + 0x24];
100 r2 = [p0 + 0x28];
101 r3 = [p0 + 0x2C];
102 r4 = [p0 + 0x30];
103 r5 = [p0 + 0x34];
104 r6 = [p0 + 0x38];
105 r7 = [p0 + 0x3C];
106
107 r0 = [p0 + 0x40]; ASTAT = r0;
108
109 /* loop counters */
110 r0 = [p0 + 0x44]; LC0 = r0;
111 r0 = [p0 + 0x48]; LC1 = r0;
112
113 /* Accumulator */
114 r0 = [p0 + 0x4C]; A0.w = r0;
115 r0 = [p0 + 0x50]; A0.x = r0;
116 r0 = [p0 + 0x54]; A1.w = r0;
117 r0 = [p0 + 0x58]; A1.x = r0;
118
119 /* index registers */
120 r0 = [p0 + 0x5C]; i0 = r0;
121 r0 = [p0 + 0x60]; i1 = r0;
122 r0 = [p0 + 0x64]; i2 = r0;
123 r0 = [p0 + 0x68]; i3 = r0;
124
125 /* modifier registers */
126 r0 = [p0 + 0x6C]; m0 = r0;
127 r0 = [p0 + 0x70]; m1 = r0;
128 r0 = [p0 + 0x74]; m2 = r0;
129 r0 = [p0 + 0x78]; m3 = r0;
130
131 /* length registers */
132 r0 = [p0 + 0x7C]; l0 = r0;
133 r0 = [p0 + 0x80]; l1 = r0;
134 r0 = [p0 + 0x84]; l2 = r0;
135 r0 = [p0 + 0x88]; l3 = r0;
136
137 /* base registers */
138 r0 = [p0 + 0x8C]; b0 = r0;
139 r0 = [p0 + 0x90]; b1 = r0;
140 r0 = [p0 + 0x94]; b2 = r0;
141 r0 = [p0 + 0x98]; b3 = r0;
142
143 /* store return address */
144 r0 = [p0 + 0x9C]; RETS = r0;
145
146 /* fixup R0 & P0 */
147 r0 = [sp++];
148 p0 = [sp++];
149 CC = R0 == 0;
150 IF !CC JUMP .Lfinished;
151 R0 = 1;
152.Lfinished:
153 RTS;
154ENDPROC(_kgdb_longjmp)