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https://github.com/AsahiLinux/u-boot
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eeb84df6e4
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>
238 lines
5.3 KiB
ArmAsm
238 lines
5.3 KiB
ArmAsm
/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
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2004, 2005, 2006
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Free Software Foundation, Inc.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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!! libgcc routines for the Renesas / SuperH SH CPUs.
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!! Contributed by Steve Chamberlain.
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!! sac@cygnus.com
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!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
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!! recoded in assembly by Toshiyasu Morita
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!! tm@netcom.com
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/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
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ELF local label prefixes by J"orn Rennecke
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amylaar@cygnus.com */
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.text
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.balign 4
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.global __movmem
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.global __movstr
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.set __movstr, __movmem
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/* This would be a lot simpler if r6 contained the byte count
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minus 64, and we wouldn't be called here for a byte count of 64. */
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__movmem:
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sts.l pr,@-r15
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shll2 r6
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bsr __movmemSI52+2
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mov.l @(48,r5),r0
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.balign 4
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movmem_loop: /* Reached with rts */
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mov.l @(60,r5),r0
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add #-64,r6
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mov.l r0,@(60,r4)
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tst r6,r6
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mov.l @(56,r5),r0
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bt movmem_done
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mov.l r0,@(56,r4)
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cmp/pl r6
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mov.l @(52,r5),r0
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add #64,r5
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mov.l r0,@(52,r4)
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add #64,r4
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bt __movmemSI52
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! done all the large groups, do the remainder
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! jump to movmem+
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mova __movmemSI4+4,r0
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add r6,r0
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jmp @r0
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movmem_done: ! share slot insn, works out aligned.
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lds.l @r15+,pr
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mov.l r0,@(56,r4)
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mov.l @(52,r5),r0
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rts
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mov.l r0,@(52,r4)
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.balign 4
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.global __movmemSI64
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.global __movstrSI64
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.set __movstrSI64, __movmemSI64
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__movmemSI64:
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mov.l @(60,r5),r0
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mov.l r0,@(60,r4)
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.global __movmemSI60
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.global __movstrSI60
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.set __movstrSI60, __movmemSI60
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__movmemSI60:
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mov.l @(56,r5),r0
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mov.l r0,@(56,r4)
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.global __movmemSI56
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.global __movstrSI56
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.set __movstrSI56, __movmemSI56
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__movmemSI56:
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mov.l @(52,r5),r0
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mov.l r0,@(52,r4)
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.global __movmemSI52
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.global __movstrSI52
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.set __movstrSI52, __movmemSI52
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__movmemSI52:
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mov.l @(48,r5),r0
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mov.l r0,@(48,r4)
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.global __movmemSI48
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.global __movstrSI48
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.set __movstrSI48, __movmemSI48
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__movmemSI48:
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mov.l @(44,r5),r0
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mov.l r0,@(44,r4)
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.global __movmemSI44
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.global __movstrSI44
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.set __movstrSI44, __movmemSI44
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__movmemSI44:
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mov.l @(40,r5),r0
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mov.l r0,@(40,r4)
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.global __movmemSI40
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.global __movstrSI40
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.set __movstrSI40, __movmemSI40
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__movmemSI40:
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mov.l @(36,r5),r0
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mov.l r0,@(36,r4)
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.global __movmemSI36
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.global __movstrSI36
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.set __movstrSI36, __movmemSI36
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__movmemSI36:
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mov.l @(32,r5),r0
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mov.l r0,@(32,r4)
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.global __movmemSI32
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.global __movstrSI32
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.set __movstrSI32, __movmemSI32
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__movmemSI32:
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mov.l @(28,r5),r0
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mov.l r0,@(28,r4)
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.global __movmemSI28
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.global __movstrSI28
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.set __movstrSI28, __movmemSI28
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__movmemSI28:
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mov.l @(24,r5),r0
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mov.l r0,@(24,r4)
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.global __movmemSI24
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.global __movstrSI24
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.set __movstrSI24, __movmemSI24
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__movmemSI24:
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mov.l @(20,r5),r0
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mov.l r0,@(20,r4)
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.global __movmemSI20
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.global __movstrSI20
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.set __movstrSI20, __movmemSI20
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__movmemSI20:
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mov.l @(16,r5),r0
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mov.l r0,@(16,r4)
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.global __movmemSI16
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.global __movstrSI16
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.set __movstrSI16, __movmemSI16
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__movmemSI16:
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mov.l @(12,r5),r0
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mov.l r0,@(12,r4)
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.global __movmemSI12
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.global __movstrSI12
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.set __movstrSI12, __movmemSI12
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__movmemSI12:
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mov.l @(8,r5),r0
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mov.l r0,@(8,r4)
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.global __movmemSI8
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.global __movstrSI8
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.set __movstrSI8, __movmemSI8
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__movmemSI8:
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mov.l @(4,r5),r0
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mov.l r0,@(4,r4)
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.global __movmemSI4
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.global __movstrSI4
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.set __movstrSI4, __movmemSI4
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__movmemSI4:
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mov.l @(0,r5),r0
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rts
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mov.l r0,@(0,r4)
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.global __movmem_i4_even
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.global __movstr_i4_even
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.set __movstr_i4_even, __movmem_i4_even
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.global __movmem_i4_odd
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.global __movstr_i4_odd
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.set __movstr_i4_odd, __movmem_i4_odd
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.global __movmemSI12_i4
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.global __movstrSI12_i4
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.set __movstrSI12_i4, __movmemSI12_i4
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.p2align 5
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L_movmem_2mod4_end:
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mov.l r0,@(16,r4)
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rts
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mov.l r1,@(20,r4)
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.p2align 2
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__movmem_i4_even:
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mov.l @r5+,r0
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bra L_movmem_start_even
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mov.l @r5+,r1
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__movmem_i4_odd:
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mov.l @r5+,r1
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add #-4,r4
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mov.l @r5+,r2
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mov.l @r5+,r3
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mov.l r1,@(4,r4)
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mov.l r2,@(8,r4)
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L_movmem_loop:
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mov.l r3,@(12,r4)
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dt r6
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mov.l @r5+,r0
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bt/s L_movmem_2mod4_end
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mov.l @r5+,r1
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add #16,r4
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L_movmem_start_even:
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mov.l @r5+,r2
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mov.l @r5+,r3
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mov.l r0,@r4
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dt r6
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mov.l r1,@(4,r4)
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bf/s L_movmem_loop
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mov.l r2,@(8,r4)
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rts
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mov.l r3,@(12,r4)
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.p2align 4
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__movmemSI12_i4:
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mov.l @r5,r0
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mov.l @(4,r5),r1
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mov.l @(8,r5),r2
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mov.l r0,@r4
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mov.l r1,@(4,r4)
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rts
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mov.l r2,@(8,r4)
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