| David Daney | 4c076fb | 2010-07-24 10:16:05 -0700 | [diff] [blame] | 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) |