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authorArnd Bergmann <arnd@arndb.de>2018-03-07 21:21:59 +0100
committerArnd Bergmann <arnd@arndb.de>2018-03-09 23:19:58 +0100
commitfd8773f9f544955f6f47dc2ac3ab85ad64376b7f (patch)
tree2eedaf10b5a4b62df0d3b514cec9614a6af6b563 /arch/frv/lib/memcpy.S
parent739d875dd6982618020d30f58f8acf10f6076e6d (diff)
downloadlinux-fd8773f9f544955f6f47dc2ac3ab85ad64376b7f.tar.bz2
arch: remove frv port
The Fujitsu FRV kernel port has been around for a long time, but has not seen regular updates in several years and instead was marked 'Orphaned' in 2016 by long-time maintainer David Howells. The SoC product line apparently is apparently still around in the form of the Socionext Milbeaut image processor, but this one no longer uses the FRV CPU cores. This removes all FRV specific files from the kernel. Link: http://www.socionext.com/en/products/assp/milbeaut/ Cc: David Howells <dhowells@redhat.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/frv/lib/memcpy.S')
-rw-r--r--arch/frv/lib/memcpy.S135
1 files changed, 0 insertions, 135 deletions
diff --git a/arch/frv/lib/memcpy.S b/arch/frv/lib/memcpy.S
deleted file mode 100644
index 9c5965273428..000000000000
--- a/arch/frv/lib/memcpy.S
+++ /dev/null
@@ -1,135 +0,0 @@
-/* memcpy.S: optimised assembly memcpy
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# void *memcpy(void *to, const char *from, size_t count)
-#
-# - NOTE: must not use any stack. exception detection performs function return
-# to caller's fixup routine, aborting the remainder of the copy
-#
-###############################################################################
- .globl memcpy,__memcpy_end
- .type memcpy,@function
-memcpy:
- or.p gr8,gr9,gr4
- orcc gr10,gr0,gr0,icc3
- or.p gr10,gr4,gr4
- beqlr icc3,#0
-
- # optimise based on best common alignment for to, from & count
- andicc.p gr4,#0x0f,gr0,icc0
- setlos #8,gr11
- andicc.p gr4,#0x07,gr0,icc1
- beq icc0,#0,memcpy_16
- andicc.p gr4,#0x03,gr0,icc0
- beq icc1,#0,memcpy_8
- andicc.p gr4,#0x01,gr0,icc1
- beq icc0,#0,memcpy_4
- setlos.p #1,gr11
- beq icc1,#0,memcpy_2
-
- # do byte by byte copy
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: ldubu.p @(gr9,gr11),gr4
- subicc gr10,#1,gr10,icc0
- stbu.p gr4,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-
- # do halfword by halfword copy
-memcpy_2:
- setlos #2,gr11
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: lduhu.p @(gr9,gr11),gr4
- subicc gr10,#2,gr10,icc0
- sthu.p gr4,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-
- # do word by word copy
-memcpy_4:
- setlos #4,gr11
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: ldu.p @(gr9,gr11),gr4
- subicc gr10,#4,gr10,icc0
- stu.p gr4,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-
- # do double-word by double-word copy
-memcpy_8:
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: lddu.p @(gr9,gr11),gr4
- subicc gr10,#8,gr10,icc0
- stdu.p gr4,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-
- # do quad-word by quad-word copy
-memcpy_16:
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: lddu @(gr9,gr11),gr4
- lddu.p @(gr9,gr11),gr6
- subicc gr10,#16,gr10,icc0
- stdu gr4,@(gr3,gr11)
- stdu.p gr6,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-__memcpy_end:
-
- .size memcpy, __memcpy_end-memcpy
-
-###############################################################################
-#
-# copy to/from userspace
-# - return the number of bytes that could not be copied (0 on complete success)
-#
-# long __memcpy_user(void *dst, const void *src, size_t count)
-#
-###############################################################################
- .globl __memcpy_user, __memcpy_user_error_lr, __memcpy_user_error_handler
- .type __memcpy_user,@function
-__memcpy_user:
- movsg lr,gr7
- subi.p sp,#8,sp
- add gr8,gr10,gr6 ; calculate expected end address
- stdi gr6,@(sp,#0)
-
- # abuse memcpy to do the dirty work
- call memcpy
-__memcpy_user_error_lr:
- ldi.p @(sp,#4),gr7
- setlos #0,gr8
- jmpl.p @(gr7,gr0)
- addi sp,#8,sp
-
- # deal any exception generated by memcpy
- # GR8 - memcpy's current dest address
- # GR11 - memset's step value (index register for store insns)
-__memcpy_user_error_handler:
- lddi.p @(sp,#0),gr4 ; load GR4 with dst+count, GR5 with ret addr
- add gr11,gr3,gr7
- sub.p gr4,gr7,gr8
-
- addi sp,#8,sp
- jmpl @(gr5,gr0)
-
- .size __memcpy_user, .-__memcpy_user