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#

# Copyright (c) 2006 Martin Decky

# All rights reserved.

#

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

# modification, are permitted provided that the following conditions

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# - Redistributions of source code must retain the above copyright

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.text

.global context_save

.global context_restore

#include <libarch/regname.h>

#include <arch/context_offset.h>

context_save:

	CONTEXT_SAVE_ARCH_CORE r3

	mflr r4

	stw r4, OFFSET_PC(r3)

	mfcr r4

	stw r4, OFFSET_CR(r3)

	# context_save returns 1

	li r3, 1

	blr

context_restore:

	CONTEXT_RESTORE_ARCH_CORE r3

	lwz r4, OFFSET_CR(r3)

	mtcr r4

	lwz r4, OFFSET_PC(r3)

	mtlr r4

	# context_restore returns 0

	li r3, 0

	blr