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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#
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#include <kernel/arch/context_offset.h>
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.text
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.text
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.global setjmp
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.global setjmp
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.global longjmp
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.global longjmp
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.type setjmp,@function
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.type setjmp,@function
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setjmp:
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setjmp:
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	movl	0(%esp), %ecx	# save current pc
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	movl 0(%esp),%eax	# save pc value into eax
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	leal	4(%esp), %edx	# save stack pointer
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	movl 4(%esp),%edx	# address of the context variable to save context to
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	movl	(%edx), %eax	# get jmp_buf pointer
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		# Save registers
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		# save registers to given structure
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	movl %ebx, 0(%eax)
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	movl %esi, 4(%eax)
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	movl %edi, 8(%eax)
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	movl %ebp, 12(%eax)
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	movl %edx, 16(%eax)
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	CONTEXT_SAVE_ARCH_CORE %edx %eax
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	movl %ecx, 20(%eax) # save pc
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	xorl %eax,%eax		# set_jmp returns 0
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	ret
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	ret
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.type longjmp,@function
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.type longjmp,@function
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longjmp:
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longjmp:
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	movl 4(%esp), %ecx	# put address of jmp_buf into ecx
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	movl 4(%esp), %ecx	# put address of jmp_buf into ecx
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	movl 8(%esp), %eax	# put return value into eax
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	movl 8(%esp), %eax	# put return value into eax
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		# restore all registers
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		# restore registers from jmp_buf
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	movl 0(%ecx), %ebx
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	CONTEXT_RESTORE_ARCH_CORE %ecx %edx
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	movl 4(%ecx), %esi
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	movl 8(%ecx), %edi
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	movl 12(%ecx), %ebp
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	movl 16(%ecx), %esp
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	movl 20(%ecx), %edx # saved return address
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	movl %edx,0(%esp)	# put saved pc on stack
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	jmp *%edx
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	ret
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