mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 00:47:22 +07:00
5d8544e2d0
This patch contains code that is more specific to the RISC-V ISA than it is to Linux. It contains string and math operations, C wrappers for various assembly instructions, stack walking code, and uaccess. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
39 lines
872 B
ArmAsm
39 lines
872 B
ArmAsm
/*
|
|
* Copyright (C) 2016-2017 Free Software Foundation, Inc.
|
|
*
|
|
* 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, version 2.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
.globl __udivdi3
|
|
__udivdi3:
|
|
mv a2, a1
|
|
mv a1, a0
|
|
li a0, -1
|
|
beqz a2, .L5
|
|
li a3, 1
|
|
bgeu a2, a1, .L2
|
|
.L1:
|
|
blez a2, .L2
|
|
slli a2, a2, 1
|
|
slli a3, a3, 1
|
|
bgtu a1, a2, .L1
|
|
.L2:
|
|
li a0, 0
|
|
.L3:
|
|
bltu a1, a2, .L4
|
|
sub a1, a1, a2
|
|
or a0, a0, a3
|
|
.L4:
|
|
srli a3, a3, 1
|
|
srli a2, a2, 1
|
|
bnez a3, .L3
|
|
.L5:
|
|
ret
|