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foboot: move software stuff to sw directory

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross
2019-03-05 08:52:47 +08:00
parent 2ac79e45e9
commit 84d4b40897
36 changed files with 0 additions and 2048 deletions
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61
sw/third_party/libbase/crc16.c vendored Normal file
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#include <crc.h>
#ifdef CRC16_FAST
static const unsigned int crc16_table[256] = {
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
};
unsigned short crc16(const unsigned char *buffer, int len)
{
return 0;
unsigned short crc;
crc = 0;
while(len-- > 0)
crc = crc16_table[((crc >> 8) ^ (*buffer++)) & 0xFF] ^ (crc << 8);
return crc;
}
#else
unsigned short crc16(const unsigned char* data_p, int length) {
unsigned char x;
unsigned short crc = 0;
while (length--){
x = crc >> 8 ^ *data_p++;
x ^= x>>4;
crc = (crc << 8) ^ ((unsigned short)(x << 12)) ^ ((unsigned short)(x <<5)) ^ ((unsigned short)x);
}
return crc;
}
#endif

103
sw/third_party/libbase/crc32.c vendored Normal file
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/* crc32.c -- compute the CRC-32 of a data stream
* Copyright (C) 1995-1998 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include <crc.h>
#ifdef CRC32_FAST
static const unsigned int crc_table[256] = {
0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
0x2d02ef8dL
};
#define DO1(buf) crc = crc_table[((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8);
#define DO2(buf) DO1(buf); DO1(buf);
#define DO4(buf) DO2(buf); DO2(buf);
#define DO8(buf) DO4(buf); DO4(buf);
unsigned int crc32(const unsigned char *buffer, unsigned int len)
{
return 0;
unsigned int crc;
crc = 0;
crc = crc ^ 0xffffffffL;
while(len >= 8) {
DO8(buffer);
len -= 8;
}
if(len) do {
DO1(buffer);
} while(--len);
return crc ^ 0xffffffffL;
}
#else
unsigned int crc32(const unsigned char *message, unsigned int len) {
int j;
unsigned int i;
unsigned int byte, crc, mask;
i = 0;
crc = 0xFFFFFFFF;
while (i < len) {
byte = message[i]; // Get next byte.
crc = crc ^ byte;
for (j = 7; j >= 0; j--) { // Do eight times.
mask = -(crc & 1);
crc = (crc >> 1) ^ (0xEDB88320 & mask);
}
i = i + 1;
}
return ~crc;
}
#endif

91
sw/third_party/libbase/crt0-vexriscv.S vendored Normal file
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.global main
.global isr
.section .text.start
.global _start
_start:
j crt_init
nop
nop
nop
nop
nop
nop
nop
.section .text
.global trap_entry
trap_entry:
sw x1, - 1*4(sp)
sw x5, - 2*4(sp)
sw x6, - 3*4(sp)
sw x7, - 4*4(sp)
sw x10, - 5*4(sp)
sw x11, - 6*4(sp)
sw x12, - 7*4(sp)
sw x13, - 8*4(sp)
sw x14, - 9*4(sp)
sw x15, -10*4(sp)
sw x16, -11*4(sp)
sw x17, -12*4(sp)
sw x28, -13*4(sp)
sw x29, -14*4(sp)
sw x30, -15*4(sp)
sw x31, -16*4(sp)
addi sp,sp,-16*4
call isr
lw x1 , 15*4(sp)
lw x5, 14*4(sp)
lw x6, 13*4(sp)
lw x7, 12*4(sp)
lw x10, 11*4(sp)
lw x11, 10*4(sp)
lw x12, 9*4(sp)
lw x13, 8*4(sp)
lw x14, 7*4(sp)
lw x15, 6*4(sp)
lw x16, 5*4(sp)
lw x17, 4*4(sp)
lw x28, 3*4(sp)
lw x29, 2*4(sp)
lw x30, 1*4(sp)
lw x31, 0*4(sp)
addi sp,sp,16*4
mret
.text
crt_init:
la sp, _fstack + 4
la a0, trap_entry
csrw mtvec, a0
bss_init:
la a0, _fbss
la a1, _ebss
bss_loop:
beq a0,a1,bss_done
sw zero,0(a0)
add a0,a0,4
j bss_loop
bss_done:
/* Load DATA */
la t0, _erodata
la t1, _fdata
la t2, _edata
3:
lw t3, 0(t0)
sw t3, 0(t1)
/* _edata is aligned to 16 bytes. Use word-xfers. */
addi t0, t0, 4
addi t1, t1, 4
bltu t1, t2, 3b
li a0, 0x880 //880 enable timer + external interrupt sources (until mstatus.MIE is set, they will never trigger an interrupt)
csrw mie,a0
call main
infinit_loop:
j infinit_loop

117
sw/third_party/libbase/libc.c vendored Normal file
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/* $OpenBSD: strlen.c,v 1.8 2014/06/10 04:17:37 deraadt Exp $ */
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <string.h>
size_t
strlen(const char *str)
{
const char *s;
for (s = str; *s; ++s)
;
return (s - str);
}
/**
* memcpy - Copies one area of memory to another
* @dest: Destination
* @src: Source
* @n: The size to copy.
*/
void *memcpy(void *to, const void *from, size_t n)
{
void *xto = to;
size_t temp;
if(!n)
return xto;
if((long)to & 1) {
char *cto = to;
const char *cfrom = from;
*cto++ = *cfrom++;
to = cto;
from = cfrom;
n--;
}
if((long)from & 1) {
char *cto = to;
const char *cfrom = from;
for (; n; n--)
*cto++ = *cfrom++;
return xto;
}
if(n > 2 && (long)to & 2) {
short *sto = to;
const short *sfrom = from;
*sto++ = *sfrom++;
to = sto;
from = sfrom;
n -= 2;
}
if((long)from & 2) {
short *sto = to;
const short *sfrom = from;
temp = n >> 1;
for (; temp; temp--)
*sto++ = *sfrom++;
to = sto;
from = sfrom;
if(n & 1) {
char *cto = to;
const char *cfrom = from;
*cto = *cfrom;
}
return xto;
}
temp = n >> 2;
if(temp) {
long *lto = to;
const long *lfrom = from;
for(; temp; temp--)
*lto++ = *lfrom++;
to = lto;
from = lfrom;
}
if(n & 2) {
short *sto = to;
const short *sfrom = from;
*sto++ = *sfrom++;
to = sto;
from = sfrom;
}
if(n & 1) {
char *cto = to;
const char *cfrom = from;
*cto = *cfrom;
}
return xto;
}

215
sw/third_party/libbase/qsort.c vendored Normal file
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/****************************************************************************
* lib/stdlib/lib_qsort.c
*
* Copyright (C) 2007, 2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Leveraged from:
*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
****************************************************************************/
#include <stdlib.h>
#define min(a, b) ((unsigned)(a)) < (((unsigned)(b))) ? ((unsigned)(a)) : ((unsigned)(b))
#define swapcode(TYPE, parmi, parmj, n) \
{ \
long i = (n) / sizeof (TYPE); \
register TYPE *pi = (TYPE *) (parmi); \
register TYPE *pj = (TYPE *) (parmj); \
do { \
register TYPE t = *pi; \
*pi++ = *pj; \
*pj++ = t; \
} while (--i > 0); \
}
#define SWAPINIT(a, size) \
swaptype = ((char *)a - (char *)0) % sizeof(long) || \
size % sizeof(long) ? 2 : size == sizeof(long)? 0 : 1;
#define swap(a, b) \
if (swaptype == 0) \
{ \
long t = *(long *)(a); \
*(long *)(a) = *(long *)(b); \
*(long *)(b) = t; \
} \
else \
{ \
swapfunc(a, b, size, swaptype); \
}
#define vecswap(a, b, n) if ((n) > 0) swapfunc(a, b, n, swaptype)
static inline void swapfunc(char *a, char *b, int n, int swaptype);
static inline char *med3(char *a, char *b, char *c,
int (*compar)(const void *, const void *));
static inline void swapfunc(char *a, char *b, int n, int swaptype)
{
if(swaptype <= 1)
{
swapcode(long, a, b, n)
}
else
{
swapcode(char, a, b, n)
}
}
static inline char *med3(char *a, char *b, char *c,
int (*compar)(const void *, const void *))
{
return compar(a, b) < 0 ?
(compar(b, c) < 0 ? b : (compar(a, c) < 0 ? c : a ))
:(compar(b, c) > 0 ? b : (compar(a, c) < 0 ? a : c ));
}
/****************************************************************************
* Name: qsort
*
* Description:
* Qsort routine from Bentley & McIlroy's "Engineering a Sort Function".
*
****************************************************************************/
void qsort(void *base, size_t nmemb, size_t size,
int(*compar)(const void *, const void *))
{
char *pa, *pb, *pc, *pd, *pl, *pm, *pn;
int d, r, swaptype, swap_cnt;
loop:
SWAPINIT(base, size);
swap_cnt = 0;
if (nmemb < 7)
{
for (pm = (char *) base + size; pm < (char *) base + nmemb * size; pm += size)
{
for (pl = pm; pl > (char *) base && compar(pl - size, pl) > 0; pl -= size)
{
swap(pl, pl - size);
}
}
return;
}
pm = (char *) base + (nmemb / 2) * size;
if (nmemb > 7)
{
pl = base;
pn = (char *) base + (nmemb - 1) * size;
if (nmemb > 40)
{
d = (nmemb / 8) * size;
pl = med3(pl, pl + d, pl + 2 * d, compar);
pm = med3(pm - d, pm, pm + d, compar);
pn = med3(pn - 2 * d, pn - d, pn, compar);
}
pm = med3(pl, pm, pn, compar);
}
swap(base, pm);
pa = pb = (char *) base + size;
pc = pd = (char *) base + (nmemb - 1) * size;
for (;;)
{
while (pb <= pc && (r = compar(pb, base)) <= 0)
{
if (r == 0)
{
swap_cnt = 1;
swap(pa, pb);
pa += size;
}
pb += size;
}
while (pb <= pc && (r = compar(pc, base)) >= 0)
{
if (r == 0)
{
swap_cnt = 1;
swap(pc, pd);
pd -= size;
}
pc -= size;
}
if (pb > pc)
{
break;
}
swap(pb, pc);
swap_cnt = 1;
pb += size;
pc -= size;
}
if (swap_cnt == 0)
{
/* Switch to insertion sort */
for (pm = (char *) base + size; pm < (char *) base + nmemb * size; pm += size)
{
for (pl = pm; pl > (char *) base && compar(pl - size, pl) > 0; pl -= size)
{
swap(pl, pl - size);
}
}
return;
}
pn = (char *) base + nmemb * size;
r = min(pa - (char *)base, pb - pa);
vecswap(base, pb - r, r);
r = min(pd - pc, pn - pd - size);
vecswap(pb, pn - r, r);
if ((r = pb - pa) > (int)size)
{
qsort(base, r / size, size, compar);
}
if ((r = pd - pc) > (int)size)
{
/* Iterate rather than recurse to save stack space */
base = pn - r;
nmemb = r / size;
goto loop;
}
}

33
sw/third_party/libbase/time.c vendored Normal file
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@@ -0,0 +1,33 @@
#include <generated/csr.h>
#include <time.h>
void time_init(void)
{
int t;
timer0_en_write(0);
t = 2*SYSTEM_CLOCK_FREQUENCY;
timer0_reload_write(t);
timer0_load_write(t);
timer0_en_write(1);
}
int elapsed(int *last_event, int period)
{
int t, dt;
timer0_update_value_write(1);
t = timer0_reload_read() - timer0_value_read();
if(period < 0) {
*last_event = t;
return 1;
}
dt = t - *last_event;
if(dt < 0)
dt += timer0_reload_read();
if((dt > period) || (dt < 0)) {
*last_event = t;
return 1;
} else
return 0;
}

110
sw/third_party/libbase/uart.c vendored Normal file
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@@ -0,0 +1,110 @@
#include <uart.h>
#include <irq.h>
#include <generated/csr.h>
#include <hw/flags.h>
/*
* Buffer sizes must be a power of 2 so that modulos can be computed
* with logical AND.
*/
#define UART_RINGBUFFER_SIZE_RX 128
#define UART_RINGBUFFER_MASK_RX (UART_RINGBUFFER_SIZE_RX-1)
static char rx_buf[UART_RINGBUFFER_SIZE_RX];
static volatile unsigned int rx_produce;
static unsigned int rx_consume;
#define UART_RINGBUFFER_SIZE_TX 128
#define UART_RINGBUFFER_MASK_TX (UART_RINGBUFFER_SIZE_TX-1)
static char tx_buf[UART_RINGBUFFER_SIZE_TX];
static unsigned int tx_produce;
static volatile unsigned int tx_consume;
void uart_isr(void)
{
unsigned int stat, rx_produce_next;
stat = uart_ev_pending_read();
if(stat & UART_EV_RX) {
while(!uart_rxempty_read()) {
rx_produce_next = (rx_produce + 1) & UART_RINGBUFFER_MASK_RX;
if(rx_produce_next != rx_consume) {
rx_buf[rx_produce] = uart_rxtx_read();
rx_produce = rx_produce_next;
}
uart_ev_pending_write(UART_EV_RX);
}
}
if(stat & UART_EV_TX) {
uart_ev_pending_write(UART_EV_TX);
while((tx_consume != tx_produce) && !uart_txfull_read()) {
uart_rxtx_write(tx_buf[tx_consume]);
tx_consume = (tx_consume + 1) & UART_RINGBUFFER_MASK_TX;
}
}
}
/* Do not use in interrupt handlers! */
char uart_read(void)
{
char c;
if (irq_getie()) {
while (rx_consume == rx_produce);
} else if (rx_consume == rx_produce) {
return 0;
}
c = rx_buf[rx_consume];
rx_consume = (rx_consume + 1) & UART_RINGBUFFER_MASK_RX;
return c;
}
int uart_read_nonblock(void)
{
return (rx_consume != rx_produce);
}
void uart_write(char c)
{
unsigned int oldmask;
unsigned int tx_produce_next = (tx_produce + 1) & UART_RINGBUFFER_MASK_TX;
if (irq_getie()) {
while(tx_produce_next == tx_consume);
} else if(tx_produce_next == tx_consume) {
return;
}
oldmask = irq_getmask();
irq_setmask(oldmask & ~(1 << UART_INTERRUPT));
if ((tx_consume != tx_produce) || uart_txfull_read()) {
tx_buf[tx_produce] = c;
tx_produce = tx_produce_next;
} else {
uart_rxtx_write(c);
}
irq_setmask(oldmask);
}
void uart_init(void)
{
rx_produce = 0;
rx_consume = 0;
tx_produce = 0;
tx_consume = 0;
uart_ev_pending_write(uart_ev_pending_read());
uart_ev_enable_write(UART_EV_TX | UART_EV_RX);
irq_setmask(irq_getmask() | (1 << UART_INTERRUPT));
}
void uart_sync(void)
{
while(tx_consume != tx_produce);
}