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4c076fb4 DD |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 2007 Cavium Networks | |
7 | */ | |
8 | #include <asm/asm.h> | |
9 | #include <asm/regdef.h> | |
10 | ||
11 | #define SAVE_REG(r) sd $r, -32768+6912-(32-r)*8($0) | |
12 | ||
13 | NESTED(octeon_wdt_nmi_stage2, 0, sp) | |
14 | .set push | |
15 | .set noreorder | |
16 | .set noat | |
17 | /* Save all registers to the top CVMSEG. This shouldn't | |
18 | * corrupt any state used by the kernel. Also all registers | |
19 | * should have the value right before the NMI. */ | |
20 | SAVE_REG(0) | |
21 | SAVE_REG(1) | |
22 | SAVE_REG(2) | |
23 | SAVE_REG(3) | |
24 | SAVE_REG(4) | |
25 | SAVE_REG(5) | |
26 | SAVE_REG(6) | |
27 | SAVE_REG(7) | |
28 | SAVE_REG(8) | |
29 | SAVE_REG(9) | |
30 | SAVE_REG(10) | |
31 | SAVE_REG(11) | |
32 | SAVE_REG(12) | |
33 | SAVE_REG(13) | |
34 | SAVE_REG(14) | |
35 | SAVE_REG(15) | |
36 | SAVE_REG(16) | |
37 | SAVE_REG(17) | |
38 | SAVE_REG(18) | |
39 | SAVE_REG(19) | |
40 | SAVE_REG(20) | |
41 | SAVE_REG(21) | |
42 | SAVE_REG(22) | |
43 | SAVE_REG(23) | |
44 | SAVE_REG(24) | |
45 | SAVE_REG(25) | |
46 | SAVE_REG(26) | |
47 | SAVE_REG(27) | |
48 | SAVE_REG(28) | |
49 | SAVE_REG(29) | |
50 | SAVE_REG(30) | |
51 | SAVE_REG(31) | |
52 | /* Set the stack to begin right below the registers */ | |
53 | li sp, -32768+6912-32*8 | |
54 | /* Load the address of the third stage handler */ | |
55 | dla a0, octeon_wdt_nmi_stage3 | |
56 | /* Call the third stage handler */ | |
57 | jal a0 | |
58 | /* a0 is the address of the saved registers */ | |
59 | move a0, sp | |
60 | /* Loop forvever if we get here. */ | |
61 | 1: b 1b | |
62 | nop | |
63 | .set pop | |
64 | END(octeon_wdt_nmi_stage2) |