u-boot/arch/sh/lib/udiv_qrnnd.S
Masahiro Yamada 5f91a3adb8 sh: import missing private libraries from Linux 3.19
SuperH is supposed to support the Private Library feature, but it is
actually not working.

If CONFIG_USE_PRIVATE_LIBGCC is enabled, the build fails for the
undefined references to '__sdivsi3_i4i' and '__udivsi3_i4i'.

To fix this error, import missing libraries from Linux 3.19
and adjust them for U-Boot:
  - Remove "#include <linux/module.h>" and "EXPORT_SYMBOL(...)"
  - Use SPDX-License-Identifier
  - Remove white space

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2015-02-25 13:57:29 +09:00

60 lines
1.1 KiB
ArmAsm

/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
2004, 2005, 2006
Free Software Foundation, Inc.
* SPDX-License-Identifier: GPL-2.0+
*/
!! 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 */
/* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */
/* n1 < d, but n1 might be larger than d1. */
.global __udiv_qrnnd_16
.balign 8
__udiv_qrnnd_16:
div0u
cmp/hi r6,r0
bt .Lots
.rept 16
div1 r6,r0
.endr
extu.w r0,r1
bt 0f
add r6,r0
0: rotcl r1
mulu.w r1,r5
xtrct r4,r0
swap.w r0,r0
sts macl,r2
cmp/hs r2,r0
sub r2,r0
bt 0f
addc r5,r0
add #-1,r1
bt 0f
1: add #-1,r1
rts
add r5,r0
.balign 8
.Lots:
sub r5,r0
swap.w r4,r1
xtrct r0,r1
clrt
mov r1,r0
addc r5,r0
mov #-1,r1
bf/s 1b
shlr16 r1
0: rts
nop