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u-boot/arch/sh/lib/movmem.S

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
/* SPDX-License-Identifier: GPL-2.0+ */
sh: Add support for SH2A freestanding build SH2A toolchains often only provide an fdpic version of libgcc. This can't be used with bare-metal software like U-Boot, so this patch provides the necessary functions extracted from libgcc. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-06-02 22:15:27 +00:00
/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
2004, 2005, 2006
Free Software Foundation, Inc.
Add GPL-2.0+ SPDX-License-Identifier to source files Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-07-08 07:37:19 +00:00
*/
sh: Add support for SH2A freestanding build SH2A toolchains often only provide an fdpic version of libgcc. This can't be used with bare-metal software like U-Boot, so this patch provides the necessary functions extracted from libgcc. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-06-02 22:15:27 +00:00
!! libgcc routines for the Renesas / SuperH SH CPUs.
!! Contributed by Steve Chamberlain.
!! sac@cygnus.com
!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
!! recoded in assembly by Toshiyasu Morita
!! tm@netcom.com
/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
ELF local label prefixes by J"orn Rennecke
amylaar@cygnus.com */
.text
.balign 4
.global __movmem
.global __movstr
.set __movstr, __movmem
/* This would be a lot simpler if r6 contained the byte count
minus 64, and we wouldn't be called here for a byte count of 64. */
__movmem:
sts.l pr,@-r15
shll2 r6
bsr __movmemSI52+2
mov.l @(48,r5),r0
.balign 4
movmem_loop: /* Reached with rts */
mov.l @(60,r5),r0
add #-64,r6
mov.l r0,@(60,r4)
tst r6,r6
mov.l @(56,r5),r0
bt movmem_done
mov.l r0,@(56,r4)
cmp/pl r6
mov.l @(52,r5),r0
add #64,r5
mov.l r0,@(52,r4)
add #64,r4
bt __movmemSI52
! done all the large groups, do the remainder
! jump to movmem+
mova __movmemSI4+4,r0
add r6,r0
jmp @r0
movmem_done: ! share slot insn, works out aligned.
lds.l @r15+,pr
mov.l r0,@(56,r4)
mov.l @(52,r5),r0
rts
mov.l r0,@(52,r4)
.balign 4
.global __movmemSI64
.global __movstrSI64
.set __movstrSI64, __movmemSI64
__movmemSI64:
mov.l @(60,r5),r0
mov.l r0,@(60,r4)
.global __movmemSI60
.global __movstrSI60
.set __movstrSI60, __movmemSI60
__movmemSI60:
mov.l @(56,r5),r0
mov.l r0,@(56,r4)
.global __movmemSI56
.global __movstrSI56
.set __movstrSI56, __movmemSI56
__movmemSI56:
mov.l @(52,r5),r0
mov.l r0,@(52,r4)
.global __movmemSI52
.global __movstrSI52
.set __movstrSI52, __movmemSI52
__movmemSI52:
mov.l @(48,r5),r0
mov.l r0,@(48,r4)
.global __movmemSI48
.global __movstrSI48
.set __movstrSI48, __movmemSI48
__movmemSI48:
mov.l @(44,r5),r0
mov.l r0,@(44,r4)
.global __movmemSI44
.global __movstrSI44
.set __movstrSI44, __movmemSI44
__movmemSI44:
mov.l @(40,r5),r0
mov.l r0,@(40,r4)
.global __movmemSI40
.global __movstrSI40
.set __movstrSI40, __movmemSI40
__movmemSI40:
mov.l @(36,r5),r0
mov.l r0,@(36,r4)
.global __movmemSI36
.global __movstrSI36
.set __movstrSI36, __movmemSI36
__movmemSI36:
mov.l @(32,r5),r0
mov.l r0,@(32,r4)
.global __movmemSI32
.global __movstrSI32
.set __movstrSI32, __movmemSI32
__movmemSI32:
mov.l @(28,r5),r0
mov.l r0,@(28,r4)
.global __movmemSI28
.global __movstrSI28
.set __movstrSI28, __movmemSI28
__movmemSI28:
mov.l @(24,r5),r0
mov.l r0,@(24,r4)
.global __movmemSI24
.global __movstrSI24
.set __movstrSI24, __movmemSI24
__movmemSI24:
mov.l @(20,r5),r0
mov.l r0,@(20,r4)
.global __movmemSI20
.global __movstrSI20
.set __movstrSI20, __movmemSI20
__movmemSI20:
mov.l @(16,r5),r0
mov.l r0,@(16,r4)
.global __movmemSI16
.global __movstrSI16
.set __movstrSI16, __movmemSI16
__movmemSI16:
mov.l @(12,r5),r0
mov.l r0,@(12,r4)
.global __movmemSI12
.global __movstrSI12
.set __movstrSI12, __movmemSI12
__movmemSI12:
mov.l @(8,r5),r0
mov.l r0,@(8,r4)
.global __movmemSI8
.global __movstrSI8
.set __movstrSI8, __movmemSI8
__movmemSI8:
mov.l @(4,r5),r0
mov.l r0,@(4,r4)
.global __movmemSI4
.global __movstrSI4
.set __movstrSI4, __movmemSI4
__movmemSI4:
mov.l @(0,r5),r0
rts
mov.l r0,@(0,r4)
.global __movmem_i4_even
.global __movstr_i4_even
.set __movstr_i4_even, __movmem_i4_even
.global __movmem_i4_odd
.global __movstr_i4_odd
.set __movstr_i4_odd, __movmem_i4_odd
.global __movmemSI12_i4
.global __movstrSI12_i4
.set __movstrSI12_i4, __movmemSI12_i4
.p2align 5
L_movmem_2mod4_end:
mov.l r0,@(16,r4)
rts
mov.l r1,@(20,r4)
.p2align 2
__movmem_i4_even:
mov.l @r5+,r0
bra L_movmem_start_even
mov.l @r5+,r1
__movmem_i4_odd:
mov.l @r5+,r1
add #-4,r4
mov.l @r5+,r2
mov.l @r5+,r3
mov.l r1,@(4,r4)
mov.l r2,@(8,r4)
L_movmem_loop:
mov.l r3,@(12,r4)
dt r6
mov.l @r5+,r0
bt/s L_movmem_2mod4_end
mov.l @r5+,r1
add #16,r4
L_movmem_start_even:
mov.l @r5+,r2
mov.l @r5+,r3
mov.l r0,@r4
dt r6
mov.l r1,@(4,r4)
bf/s L_movmem_loop
mov.l r2,@(8,r4)
rts
mov.l r3,@(12,r4)
.p2align 4
__movmemSI12_i4:
mov.l @r5,r0
mov.l @(4,r5),r1
mov.l @(8,r5),r2
mov.l r0,@r4
mov.l r1,@(4,r4)
rts
mov.l r2,@(8,r4)
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