blob: cba4179d3efbf350661c4033f7be4063506dee38 [file] [log] [blame]
Robin Getzf19fd872009-12-21 16:35:48 -05001
2#include <asm/linkage.h>
3
4/* save stack context for non-local goto
5 * int kgdb_setjmp(long *buf)
6 */
7
8ENTRY(_kgdb_setjmp)
9 [--SP] = p0; /* Save P0 */
10 p0 = r0;
11 r0 = [SP++]; /* Load P0 into R0 */
12
13 [p0 + 0x00] = r0; /* GP address registers */
14 [p0 + 0x04] = p1;
15 [p0 + 0x08] = p2;
16 [p0 + 0x0C] = p3;
17 [p0 + 0x10] = p4;
18 [p0 + 0x14] = p5;
19 [p0 + 0x18] = FP; /* frame pointer */
20 [p0 + 0x1C] = SP; /* stack pointer */
21
22 [p0 + 0x20] = p0; /* data regs */
23 [p0 + 0x24] = r1;
24 [p0 + 0x28] = r2;
25 [p0 + 0x2C] = r3;
26 [p0 + 0x30] = r4;
27 [p0 + 0x34] = r5;
28 [p0 + 0x38] = r6;
29 [p0 + 0x3C] = r7;
30
31 r0 = ASTAT; [p0 + 0x40] = r0;
32
33 /* loop counters */
34 r0 = LC0; [p0 + 0x44] = r0;
35 r0 = LC1; [p0 + 0x48] = r0;
36
37 /* Accumulator */
38 r0 = A0.w; [p0 + 0x4C] = r0;
39 r0.l = A0.x; [p0 + 0x50] = r0;
40 r0 = A1.w; [p0 + 0x54] = r0;
41 r0.l = A1.x; [p0 + 0x58] = r0;
42
43 /* index registers */
44 r0 = i0; [p0 + 0x5C] = r0;
45 r0 = i1; [p0 + 0x60] = r0;
46 r0 = i2; [p0 + 0x64] = r0;
47 r0 = i3; [p0 + 0x68] = r0;
48
49 /* modifier registers */
50 r0 = m0; [p0 + 0x6C] = r0;
51 r0 = m1; [p0 + 0x70] = r0;
52 r0 = m2; [p0 + 0x74] = r0;
53 r0 = m3; [p0 + 0x78] = r0;
54
55 /* length registers */
56 r0 = l0; [p0 + 0x7C] = r0;
57 r0 = l1; [p0 + 0x80] = r0;
58 r0 = l2; [p0 + 0x84] = r0;
59 r0 = l3; [p0 + 0x88] = r0;
60
61 /* base registers */
62 r0 = b0; [p0 + 0x8C] = r0;
63 r0 = b1; [p0 + 0x90] = r0;
64 r0 = b2; [p0 + 0x94] = r0;
65 r0 = b3; [p0 + 0x98] = r0;
66
67 /* store return address */
68 r0 = RETS; [p0 + 0x9C] = r0;
69
70 R0 = 0;
71 RTS;
72ENDPROC(_kgdb_setjmp)
73
74/*
75 * non-local jump to a saved stack context
76 * longjmp(long *buf, int val)
77 */
78
79ENTRY(_kgdb_longjmp)
80 p0 = r0;
81 r0 = [p0 + 0x00];
82 [--sp] = r0;
83
84 /* GP address registers - skip p0 for now*/
85 p1 = [p0 + 0x04];
86 p2 = [p0 + 0x08];
87 p3 = [p0 + 0x0C];
88 p4 = [p0 + 0x10];
89 p5 = [p0 + 0x14];
90 /* frame pointer */
91 fp = [p0 + 0x18];
92 /* stack pointer */
93 r0 = [sp++];
94 sp = [p0 + 0x1C];
95 [--sp] = r0;
96 [--sp] = r1;
97
98 /* data regs */
99 r0 = [p0 + 0x20];
100 r1 = [p0 + 0x24];
101 r2 = [p0 + 0x28];
102 r3 = [p0 + 0x2C];
103 r4 = [p0 + 0x30];
104 r5 = [p0 + 0x34];
105 r6 = [p0 + 0x38];
106 r7 = [p0 + 0x3C];
107
108 r0 = [p0 + 0x40]; ASTAT = r0;
109
110 /* loop counters */
111 r0 = [p0 + 0x44]; LC0 = r0;
112 r0 = [p0 + 0x48]; LC1 = r0;
113
114 /* Accumulator */
115 r0 = [p0 + 0x4C]; A0.w = r0;
116 r0 = [p0 + 0x50]; A0.x = r0;
117 r0 = [p0 + 0x54]; A1.w = r0;
118 r0 = [p0 + 0x58]; A1.x = r0;
119
120 /* index registers */
121 r0 = [p0 + 0x5C]; i0 = r0;
122 r0 = [p0 + 0x60]; i1 = r0;
123 r0 = [p0 + 0x64]; i2 = r0;
124 r0 = [p0 + 0x68]; i3 = r0;
125
126 /* modifier registers */
127 r0 = [p0 + 0x6C]; m0 = r0;
128 r0 = [p0 + 0x70]; m1 = r0;
129 r0 = [p0 + 0x74]; m2 = r0;
130 r0 = [p0 + 0x78]; m3 = r0;
131
132 /* length registers */
133 r0 = [p0 + 0x7C]; l0 = r0;
134 r0 = [p0 + 0x80]; l1 = r0;
135 r0 = [p0 + 0x84]; l2 = r0;
136 r0 = [p0 + 0x88]; l3 = r0;
137
138 /* base registers */
139 r0 = [p0 + 0x8C]; b0 = r0;
140 r0 = [p0 + 0x90]; b1 = r0;
141 r0 = [p0 + 0x94]; b2 = r0;
142 r0 = [p0 + 0x98]; b3 = r0;
143
144 /* store return address */
145 r0 = [p0 + 0x9C]; RETS = r0;
146
147 /* fixup R0 & P0 */
148 r0 = [sp++];
149 p0 = [sp++];
150 CC = R0 == 0;
151 IF !CC JUMP .Lfinished;
152 R0 = 1;
153.Lfinished:
154 RTS;
155ENDPROC(_kgdb_longjmp)