1 files changed, 0 insertions, 217 deletions
diff --git a/arch/sh64/lib/copy_user_memcpy.S b/arch/sh64/lib/copy_user_memcpy.S
deleted file mode 100644
index 2a62816d2ddd..000000000000
--- a/arch/sh64/lib/copy_user_memcpy.S
+++ /dev/null
@@ -1,217 +0,0 @@
-!
-! Fast SH memcpy
-!
-! by Toshiyasu Morita (tm@netcom.com)
-! hacked by J"orn Rernnecke (joern.rennecke@superh.com) ("o for o-umlaut)
-! SH5 code Copyright 2002 SuperH Ltd.
-!
-! Entry: ARG0: destination pointer
-!        ARG1: source pointer
-!        ARG2: byte count
-!
-! Exit:  RESULT: destination pointer
-!        any other registers in the range r0-r7: trashed
-!
-! Notes: Usually one wants to do small reads and write a longword, but
-!        unfortunately it is difficult in some cases to concatanate bytes
-!        into a longword on the SH, so this does a longword read and small
-!        writes.
-!
-! This implementation makes two assumptions about how it is called:
-!
-! 1.: If the byte count is nonzero, the address of the last byte to be
-!     copied is unsigned greater than the address of the first byte to
-!     be copied.  This could be easily swapped for a signed comparison,
-!     but the algorithm used needs some comparison.
-!
-! 2.: When there are two or three bytes in the last word of an 11-or-more
-!     bytes memory chunk to b copied, the rest of the word can be read
-!     without side effects.
-!     This could be easily changed by increasing the minumum size of
-!     a fast memcpy and the amount subtracted from r7 before L_2l_loop be 2,
-!     however, this would cost a few extra cyles on average.
-!     For SHmedia, the assumption is that any quadword can be read in its
-!     enirety if at least one byte is included in the copy.
-
-/* Imported into Linux kernel by Richard Curnow.  This is used to implement the
-   __copy_user function in the general case, so it has to be a distinct
-   function from intra-kernel memcpy to allow for exception fix-ups in the
-   event that the user pointer is bad somewhere in the copy (e.g. due to
-   running off the end of the vma).
-
-   Note, this algorithm will be slightly wasteful in the case where the source
-   and destination pointers are equally aligned, because the stlo/sthi pairs
-   could then be merged back into single stores.  If there are a lot of cache
-   misses, this is probably offset by the stall lengths on the preloads.
-
-*/
-
-/* NOTE : Prefetches removed and allocos guarded by synco to avoid TAKum03020
- * erratum.  The first two prefetches are nop-ed out to avoid upsetting the
- * instruction counts used in the jump address calculation.
- * */
-
-	.section .text..SHmedia32,"ax"
-	.little
-	.balign 32
-	.global copy_user_memcpy
-	.global copy_user_memcpy_end
-copy_user_memcpy:
-
-#define LDUAQ(P,O,D0,D1) ldlo.q P,O,D0; ldhi.q P,O+7,D1
-#define STUAQ(P,O,D0,D1) stlo.q P,O,D0; sthi.q P,O+7,D1
-#define LDUAL(P,O,D0,D1) ldlo.l P,O,D0; ldhi.l P,O+3,D1
-#define STUAL(P,O,D0,D1) stlo.l P,O,D0; sthi.l P,O+3,D1
-
-	nop ! ld.b r3,0,r63 ! TAKum03020
-	pta/l Large,tr0
-	movi 25,r0
-	bgeu/u r4,r0,tr0
-	nsb r4,r0
-	shlli r0,5,r0
-	movi (L1-L0+63*32 + 1) & 0xffff,r1
-	sub r1, r0, r0
-L0:	ptrel r0,tr0
-	add r2,r4,r5
-	ptabs r18,tr1
-	add r3,r4,r6
-	blink tr0,r63
-
-/* Rearranged to make cut2 safe */
-	.balign 8
-L4_7:	/* 4..7 byte memcpy cntd. */
-	stlo.l r2, 0, r0
-	or r6, r7, r6
-	sthi.l r5, -1, r6
-	stlo.l r5, -4, r6
-	blink tr1,r63
-
-	.balign 8
-L1:	/* 0 byte memcpy */
-	nop
-	blink tr1,r63
-	nop
-	nop
-	nop
-	nop
-
-L2_3:	/* 2 or 3 byte memcpy cntd. */
-	st.b r5,-1,r6
-	blink tr1,r63
-
-	/* 1 byte memcpy */
-	ld.b r3,0,r0
-	st.b r2,0,r0
-	blink tr1,r63
-
-L8_15:	/* 8..15 byte memcpy cntd. */
-	stlo.q r2, 0, r0
-	or r6, r7, r6
-	sthi.q r5, -1, r6
-	stlo.q r5, -8, r6
-	blink tr1,r63
-
-	/* 2 or 3 byte memcpy */
-	ld.b r3,0,r0
-	nop ! ld.b r2,0,r63 ! TAKum03020
-	ld.b r3,1,r1
-	st.b r2,0,r0
-	pta/l L2_3,tr0
-	ld.b r6,-1,r6
-	st.b r2,1,r1
-	blink tr0, r63
-
-	/* 4 .. 7 byte memcpy */
-	LDUAL (r3, 0, r0, r1)
-	pta L4_7, tr0
-	ldlo.l r6, -4, r7
-	or r0, r1, r0
-	sthi.l r2, 3, r0
-	ldhi.l r6, -1, r6
-	blink tr0, r63
-
-	/* 8 .. 15 byte memcpy */
-	LDUAQ (r3, 0, r0, r1)
-	pta L8_15, tr0
-	ldlo.q r6, -8, r7
-	or r0, r1, r0
-	sthi.q r2, 7, r0
-	ldhi.q r6, -1, r6
-	blink tr0, r63
-
-	/* 16 .. 24 byte memcpy */
-	LDUAQ (r3, 0, r0, r1)
-	LDUAQ (r3, 8, r8, r9)
-	or r0, r1, r0
-	sthi.q r2, 7, r0
-	or r8, r9, r8
-	sthi.q r2, 15, r8
-	ldlo.q r6, -8, r7
-	ldhi.q r6, -1, r6
-	stlo.q r2, 8, r8
-	stlo.q r2, 0, r0
-	or r6, r7, r6
-	sthi.q r5, -1, r6
-	stlo.q r5, -8, r6
-	blink tr1,r63
-
-Large:
-	! ld.b r2, 0, r63 ! TAKum03020
-	pta/l  Loop_ua, tr1
-	ori r3, -8, r7
-	sub r2, r7, r22
-	sub r3, r2, r6
-	add r2, r4, r5
-	ldlo.q r3, 0, r0
-	addi r5, -16, r5
-	movi 64+8, r27 ! could subtract r7 from that.
-	stlo.q r2, 0, r0
-	sthi.q r2, 7, r0
-	ldx.q r22, r6, r0
-	bgtu/l r27, r4, tr1
-
-	addi r5, -48, r27
-	pta/l Loop_line, tr0
-	addi r6, 64, r36
-	addi r6, -24, r19
-	addi r6, -16, r20
-	addi r6, -8, r21
-
-Loop_line:
-	! ldx.q r22, r36, r63 ! TAKum03020
-	alloco r22, 32
-	synco
-	addi r22, 32, r22
-	ldx.q r22, r19, r23
-	sthi.q r22, -25, r0
-	ldx.q r22, r20, r24
-	ldx.q r22, r21, r25
-	stlo.q r22, -32, r0
-	ldx.q r22, r6,  r0
-	sthi.q r22, -17, r23
-	sthi.q r22,  -9, r24
-	sthi.q r22,  -1, r25
-	stlo.q r22, -24, r23
-	stlo.q r22, -16, r24
-	stlo.q r22,  -8, r25
-	bgeu r27, r22, tr0
-
-Loop_ua:
-	addi r22, 8, r22
-	sthi.q r22, -1, r0
-	stlo.q r22, -8, r0
-	ldx.q r22, r6, r0
-	bgtu/l r5, r22, tr1
-
-	add r3, r4, r7
-	ldlo.q r7, -8, r1
-	sthi.q r22, 7, r0
-	ldhi.q r7, -1, r7
-	ptabs r18,tr1
-	stlo.q r22, 0, r0
-	or r1, r7, r1
-	sthi.q r5, 15, r1
-	stlo.q r5, 8, r1
-	blink tr1, r63
-copy_user_memcpy_end:
-	nop