octeon-wdt-nmi.S 1.34 KB
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/*
 * 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)