alpha/lib/ev6-clear_user.S

20  *	L	- lower subcluster; L0 - subcluster L0; L1 - subcluster L1
54 	beq	$0, $zerolength # U  .. .. ..	:  U L U L
61 	beq	$4, $headalign	# U  .. .. ..	: U L U L
64  * Head is not aligned.  Write (8 - $4) bytes to head of destination
67 	EX( ldq_u $5, 0($16) )	# .. .. .. L	: load dst word to mask back in
70 	addq	$16, 8, $16	# E  .. .. .. 	: L U U L
72 	EX( stq_u $5, -8($16) )	# .. .. .. L	:
74 	addq	$0, $4, $0	# .. E  .. ..	: bytes left -= 8 - misalignment
75 	subq	$0, 8, $0	# E  .. .. ..	: U L U L
89 	blt	$4, $trailquad	# U  .. .. ..	: U L U L
101 	beq	$3, $bigalign	# U  .. .. ..	: U L U L : Aligned 0mod64
104 	EX( stq_u $31, 0($16) )	# .. .. .. L
105 	addq	$3, 8, $3	# .. .. E  ..
106 	subq	$0, 8, $0	# .. E  .. ..
107 	nop			# E  .. .. ..	: U L U L
111 	addq	$16, 8, $16	# .. E  .. ..
112 	blt	$3, $alignmod64	# U  .. .. ..	: U L U L
135 	bis	$16,$16,$3	# E : U L U L : Initial wh64 address is dest
141 	EX( stq_u $31, 0($16) )	# .. L  .. ..
142 	subq	$0, 8, $0	# E  .. .. ..	: U L U L
145 	EX( stq_u $31, 8($16) )	# L :
146 	EX( stq_u $31, 16($16) )	# L :
147 	subq	$0, 16, $0	# E : U L L U
150 	EX( stq_u $31, 24($16) )	# L :
151 	EX( stq_u $31, 32($16) )	# L :
152 	subq	$0, 168, $5	# E : U L L U : two trips through the loop left?
156 	EX( stq_u $31, 40($16) )	# L :
157 	EX( stq_u $31, 48($16) )	# L :
158 	cmovlt	$5, $16, $3	# E : U L L U : Latency 2, extra mapping cycle
160 	subq	$1, 8, $1	# E :
162 	EX( stq_u $31, 56($16) )	# L :
163 	nop			# E : U L U L
166 	subq	$0, 8, $0	# E :
168 	bge	$4, $do_wh64	# U : U L U L
177 	beq	$1, $trailbytes	# U  .. .. ..	: U L U L : Only 0..7 bytes to go
180 	EX( stq_u $31, 0($16) )	# .. .. .. L
182 	subq	$0, 8, $0	# .. E  .. ..
183 	nop			# E  .. .. ..	: U L U L
187 	addq	$16, 8, $16	# .. E  .. ..
188 	bgt	$1, $onequad	# U  .. .. ..	: U L U L
195 	beq	$0, $zerolength	# U  .. .. ..	: U L U L
201 	EX( stb $31, 0($16) )	# .. .. .. L
204 	bgt	$0, $onebyte	# U  .. .. ..	: U L U L
211 	ret	$31, ($26), 1	# L0 .. .. ..	: L U L U