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#

# Copyright (c) 2007 Petr Stepan

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

#

# - Redistributions of source code must retain the above copyright

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# - Redistributions in binary form must reproduce the above copyright

#   notice, this list of conditions and the following disclaimer in the

#   documentation and/or other materials provided with the distribution.

# - The name of the author may not be used to endorse or promote products

#   derived from this software without specific prior written permission.

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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

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#

.text   

.global context_save_arch

.global context_restore_arch

context_save_arch:

	stmfd sp!, {r1}

	mrs r1, cpsr

	and r1, r1, #0x1f

	stmia r0!, {r1}

	ldmfd sp!, {r1}

	stmia r0!, {sp, lr}

	stmia r0!, {r4-r11}

	mov r0, #1

	mov pc, lr

context_restore_arch:

	ldmia r0!, {r4}

	mrs r5, cpsr

	bic r5, r5, #0x1f

	orr r5, r5, r4

	msr cpsr_c, r5

	ldmia r0!, {sp, lr}

	ldmia r0!, {r4-r11}

	mov r0, #0

	mov pc, lr