diff options
Diffstat (limited to 'drivers/watchdog/octeon-wdt-nmi.S')
| -rw-r--r-- | drivers/watchdog/octeon-wdt-nmi.S | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/watchdog/octeon-wdt-nmi.S b/drivers/watchdog/octeon-wdt-nmi.S new file mode 100644 index 000000000..8a900a5e3 --- /dev/null +++ b/drivers/watchdog/octeon-wdt-nmi.S @@ -0,0 +1,64 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2007 Cavium Networks + */ +#include <asm/asm.h> +#include <asm/regdef.h> + +#define SAVE_REG(r) sd $r, -32768+6912-(32-r)*8($0) + + NESTED(octeon_wdt_nmi_stage2, 0, sp) + .set push + .set noreorder + .set noat + /* Save all registers to the top CVMSEG. This shouldn't + * corrupt any state used by the kernel. Also all registers + * should have the value right before the NMI. */ + SAVE_REG(0) + SAVE_REG(1) + SAVE_REG(2) + SAVE_REG(3) + SAVE_REG(4) + SAVE_REG(5) + SAVE_REG(6) + SAVE_REG(7) + SAVE_REG(8) + SAVE_REG(9) + SAVE_REG(10) + SAVE_REG(11) + SAVE_REG(12) + SAVE_REG(13) + SAVE_REG(14) + SAVE_REG(15) + SAVE_REG(16) + SAVE_REG(17) + SAVE_REG(18) + SAVE_REG(19) + SAVE_REG(20) + SAVE_REG(21) + SAVE_REG(22) + SAVE_REG(23) + SAVE_REG(24) + SAVE_REG(25) + SAVE_REG(26) + SAVE_REG(27) + SAVE_REG(28) + SAVE_REG(29) + SAVE_REG(30) + SAVE_REG(31) + /* Set the stack to begin right below the registers */ + li sp, -32768+6912-32*8 + /* Load the address of the third stage handler */ + dla a0, octeon_wdt_nmi_stage3 + /* Call the third stage handler */ + jal a0 + /* a0 is the address of the saved registers */ + move a0, sp + /* Loop forvever if we get here. */ +1: b 1b + nop + .set pop + END(octeon_wdt_nmi_stage2) |