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#
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#
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#include <stack.h>
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#include <stack.h>
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#include <register.h>
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#include <register.h>
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- 
 
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.register       %g2, #scratch
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.register       %g3, #scratch
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.text
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.text
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.global halt
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.global halt
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.global memcpy
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.global memcpy
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.global jump_to_kernel
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.global jump_to_kernel
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halt:
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halt:
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	b halt
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	b halt
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	nop
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	nop
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memcpy:
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memcpy:
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	.register       %g2, #scratch
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	mov	%o0, %o3		! save dst
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        .register       %g3, #scratch
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	add	%o1, 7, %g1
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	add	%o1, 7, %g1
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	and	%g1, -8, %g1
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	and	%g1, -8, %g1
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	cmp	%o1, %g1
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	cmp	%o1, %g1
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	be,pn	%xcc, 3f
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	be,pn	%xcc, 3f
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	add	%o0, 7, %g1
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	add	%o0, 7, %g1
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	stb	%g1, [%g3 + %o0]
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	stb	%g1, [%g3 + %o0]
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	bne,pt	%xcc, 1b
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	bne,pt	%xcc, 1b
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	mov	%g2, %g3
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	mov	%g2, %g3
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2:
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2:
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	jmp	%o7 + 8			! exit point
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	jmp	%o7 + 8			! exit point
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	mov	%o1, %o0
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	mov	%o3, %o0
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3:
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3:
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	and	%g1, -8, %g1
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	and	%g1, -8, %g1
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	cmp	%o0, %g1
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	cmp	%o0, %g1
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	bne,pt	%xcc, 0b
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	bne,pt	%xcc, 0b
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	mov	0, %g3
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	mov	0, %g3
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	cmp	%o2, %g2
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	cmp	%o2, %g2
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	bne,pt	%xcc, 6b
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	bne,pt	%xcc, 6b
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	mov	%g2, %g3
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	mov	%g2, %g3
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	jmp	%o7 + 8			! exit point
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	jmp	%o7 + 8			! exit point
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	mov	%o1, %o0
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	mov	%o3, %o0
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jump_to_kernel:
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jump_to_kernel:
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	/*
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	/*
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	 * We have copied code and now we need to guarantee cache coherence.
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	 * We have copied code and now we need to guarantee cache coherence.
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	 * 1. Make sure that the code we have moved has drained to main memory.
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	 * 1. Make sure that the code we have moved has drained to main memory.