hekate/ipl/util.c

80 lines
1.5 KiB
C
Raw Normal View History

2018-03-26 23:04:16 +00:00
/*
* Copyright (c) 2018 naehrwert
2018-06-19 13:53:41 +00:00
* Copyright (C) 2018 CTCaer
2018-03-26 23:04:16 +00:00
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
2018-03-07 01:11:46 +00:00
#include "util.h"
#include "t210.h"
2018-05-01 05:15:48 +00:00
u32 get_tmr()
{
return TMR(0x10);
}
2018-03-07 01:11:46 +00:00
void sleep(u32 ticks)
{
u32 start = TMR(0x10);
while (TMR(0x10) - start <= ticks)
;
}
void exec_cfg(u32 *base, const cfg_op_t *ops, u32 num_ops)
{
for(u32 i = 0; i < num_ops; i++)
base[ops[i].off] = ops[i].val;
}
#define CRC32C_POLY 0x82F63B78
u32 crc32c(const void *buf, u32 len)
{
const u8 *cbuf = (const u8 *)buf;
u32 crc = 0xFFFFFFFF;
while (len--)
{
crc ^= *cbuf++;
for (int i = 0; i < 8; i++)
crc = crc & 1 ? (crc >> 1) ^ CRC32C_POLY : crc >> 1;
}
return ~crc;
}
u32 memcmp32sparse(const u32 *buf1, const u32 *buf2, u32 len)
{
u32 len32 = len / 4;
if (!(len32 % 32))
{
while (len32)
{
len32 -= 32;
if(buf1[len32] != buf2[len32])
return 1;
}
}
else
{
while (len32)
{
len32 -= 32;
if(buf1[len32] != buf2[len32])
return 1;
if (len32 < 32)
return 0;
}
}
return 0;
}