702 lines
16 KiB
C
702 lines
16 KiB
C
/*
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Copyright 2018 Embedded Microprocessor Benchmark Consortium (EEMBC)
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include <coremark.h>
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#include <stdarg.h>
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#define ZEROPAD (1 << 0) /* Pad with zero */
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#define SIGN (1 << 1) /* Unsigned/signed long */
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#define PLUS (1 << 2) /* Show plus */
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#define SPACE (1 << 3) /* Spacer */
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#define LEFT (1 << 4) /* Left justified */
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#define HEX_PREP (1 << 5) /* 0x */
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#define UPPERCASE (1 << 6) /* 'ABCDEF' */
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#define is_digit(c) ((c) >= '0' && (c) <= '9')
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static char * digits = "0123456789abcdefghijklmnopqrstuvwxyz";
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static char * upper_digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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static ee_size_t strnlen(const char *s, ee_size_t count);
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static ee_size_t
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strnlen(const char *s, ee_size_t count)
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{
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const char *sc;
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for (sc = s; *sc != '\0' && count--; ++sc)
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;
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return sc - s;
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}
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static int
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skip_atoi(const char **s)
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{
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int i = 0;
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while (is_digit(**s))
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i = i * 10 + *((*s)++) - '0';
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return i;
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}
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static char *
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number(char *str, long num, int base, int size, int precision, int type)
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{
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char c, sign, tmp[66];
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char *dig = digits;
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int i;
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if (type & UPPERCASE)
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dig = upper_digits;
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if (type & LEFT)
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type &= ~ZEROPAD;
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if (base < 2 || base > 36)
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return 0;
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c = (type & ZEROPAD) ? '0' : ' ';
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sign = 0;
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if (type & SIGN)
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{
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if (num < 0)
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{
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sign = '-';
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num = -num;
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size--;
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}
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else if (type & PLUS)
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{
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sign = '+';
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size--;
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}
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else if (type & SPACE)
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{
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sign = ' ';
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size--;
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}
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}
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if (type & HEX_PREP)
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{
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if (base == 16)
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size -= 2;
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else if (base == 8)
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size--;
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}
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i = 0;
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if (num == 0)
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tmp[i++] = '0';
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else
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{
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while (num != 0)
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{
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tmp[i++] = dig[((unsigned long)num) % (unsigned)base];
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num = ((unsigned long)num) / (unsigned)base;
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}
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}
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if (i > precision)
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precision = i;
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size -= precision;
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if (!(type & (ZEROPAD | LEFT)))
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while (size-- > 0)
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*str++ = ' ';
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if (sign)
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*str++ = sign;
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if (type & HEX_PREP)
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{
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if (base == 8)
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*str++ = '0';
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else if (base == 16)
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{
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*str++ = '0';
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*str++ = digits[33];
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}
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}
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if (!(type & LEFT))
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while (size-- > 0)
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*str++ = c;
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while (i < precision--)
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*str++ = '0';
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while (i-- > 0)
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*str++ = tmp[i];
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while (size-- > 0)
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*str++ = ' ';
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return str;
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}
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static char *
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eaddr(char *str, unsigned char *addr, int size, int precision, int type)
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{
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char tmp[24];
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char *dig = digits;
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int i, len;
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if (type & UPPERCASE)
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dig = upper_digits;
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len = 0;
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for (i = 0; i < 6; i++)
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{
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if (i != 0)
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tmp[len++] = ':';
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tmp[len++] = dig[addr[i] >> 4];
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tmp[len++] = dig[addr[i] & 0x0F];
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}
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if (!(type & LEFT))
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while (len < size--)
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*str++ = ' ';
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for (i = 0; i < len; ++i)
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*str++ = tmp[i];
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while (len < size--)
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*str++ = ' ';
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return str;
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}
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static char *
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iaddr(char *str, unsigned char *addr, int size, int precision, int type)
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{
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char tmp[24];
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int i, n, len;
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len = 0;
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for (i = 0; i < 4; i++)
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{
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if (i != 0)
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tmp[len++] = '.';
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n = addr[i];
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if (n == 0)
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tmp[len++] = digits[0];
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else
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{
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if (n >= 100)
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{
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tmp[len++] = digits[n / 100];
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n = n % 100;
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tmp[len++] = digits[n / 10];
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n = n % 10;
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}
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else if (n >= 10)
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{
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tmp[len++] = digits[n / 10];
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n = n % 10;
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}
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tmp[len++] = digits[n];
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}
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}
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if (!(type & LEFT))
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while (len < size--)
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*str++ = ' ';
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for (i = 0; i < len; ++i)
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*str++ = tmp[i];
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while (len < size--)
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*str++ = ' ';
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return str;
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}
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#if HAS_FLOAT
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char * ecvtbuf(double arg, int ndigits, int *decpt, int *sign, char *buf);
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char * fcvtbuf(double arg, int ndigits, int *decpt, int *sign, char *buf);
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static void ee_bufcpy(char *d, char *s, int count);
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void
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ee_bufcpy(char *pd, char *ps, int count)
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{
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char *pe = ps + count;
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while (ps != pe)
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*pd++ = *ps++;
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}
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static void
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parse_float(double value, char *buffer, char fmt, int precision)
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{
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int decpt, sign, exp, pos;
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char *digits = NULL;
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char cvtbuf[80];
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int capexp = 0;
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int magnitude;
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if (fmt == 'G' || fmt == 'E')
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{
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capexp = 1;
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fmt += 'a' - 'A';
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}
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if (fmt == 'g')
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{
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digits = ecvtbuf(value, precision, &decpt, &sign, cvtbuf);
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magnitude = decpt - 1;
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if (magnitude < -4 || magnitude > precision - 1)
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{
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fmt = 'e';
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precision -= 1;
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}
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else
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{
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fmt = 'f';
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precision -= decpt;
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}
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}
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if (fmt == 'e')
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{
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digits = ecvtbuf(value, precision + 1, &decpt, &sign, cvtbuf);
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if (sign)
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*buffer++ = '-';
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*buffer++ = *digits;
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if (precision > 0)
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*buffer++ = '.';
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ee_bufcpy(buffer, digits + 1, precision);
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buffer += precision;
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*buffer++ = capexp ? 'E' : 'e';
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if (decpt == 0)
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{
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if (value == 0.0)
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exp = 0;
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else
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exp = -1;
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}
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else
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exp = decpt - 1;
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if (exp < 0)
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{
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*buffer++ = '-';
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exp = -exp;
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}
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else
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*buffer++ = '+';
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buffer[2] = (exp % 10) + '0';
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exp = exp / 10;
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buffer[1] = (exp % 10) + '0';
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exp = exp / 10;
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buffer[0] = (exp % 10) + '0';
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buffer += 3;
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}
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else if (fmt == 'f')
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{
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digits = fcvtbuf(value, precision, &decpt, &sign, cvtbuf);
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if (sign)
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*buffer++ = '-';
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if (*digits)
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{
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if (decpt <= 0)
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{
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*buffer++ = '0';
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*buffer++ = '.';
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for (pos = 0; pos < -decpt; pos++)
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*buffer++ = '0';
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while (*digits)
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*buffer++ = *digits++;
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}
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else
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{
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pos = 0;
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while (*digits)
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{
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if (pos++ == decpt)
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*buffer++ = '.';
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*buffer++ = *digits++;
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}
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}
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}
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else
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{
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*buffer++ = '0';
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if (precision > 0)
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{
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*buffer++ = '.';
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for (pos = 0; pos < precision; pos++)
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*buffer++ = '0';
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}
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}
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}
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*buffer = '\0';
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}
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static void
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decimal_point(char *buffer)
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{
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while (*buffer)
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{
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if (*buffer == '.')
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return;
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if (*buffer == 'e' || *buffer == 'E')
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break;
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buffer++;
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}
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if (*buffer)
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{
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int n = strnlen(buffer, 256);
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while (n > 0)
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{
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buffer[n + 1] = buffer[n];
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n--;
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}
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*buffer = '.';
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}
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else
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{
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*buffer++ = '.';
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*buffer = '\0';
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}
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}
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static void
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cropzeros(char *buffer)
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{
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char *stop;
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while (*buffer && *buffer != '.')
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buffer++;
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if (*buffer++)
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{
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while (*buffer && *buffer != 'e' && *buffer != 'E')
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buffer++;
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stop = buffer--;
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while (*buffer == '0')
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buffer--;
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if (*buffer == '.')
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buffer--;
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while (buffer != stop)
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*++buffer = 0;
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}
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}
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static char *
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flt(char *str, double num, int size, int precision, char fmt, int flags)
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{
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char tmp[80];
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char c, sign;
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int n, i;
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// Left align means no zero padding
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if (flags & LEFT)
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flags &= ~ZEROPAD;
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// Determine padding and sign char
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c = (flags & ZEROPAD) ? '0' : ' ';
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sign = 0;
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if (flags & SIGN)
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{
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if (num < 0.0)
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{
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sign = '-';
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num = -num;
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size--;
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}
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else if (flags & PLUS)
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{
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sign = '+';
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size--;
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}
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else if (flags & SPACE)
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{
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sign = ' ';
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size--;
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}
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}
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// Compute the precision value
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if (precision < 0)
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precision = 6; // Default precision: 6
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// Convert floating point number to text
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parse_float(num, tmp, fmt, precision);
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if ((flags & HEX_PREP) && precision == 0)
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decimal_point(tmp);
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if (fmt == 'g' && !(flags & HEX_PREP))
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cropzeros(tmp);
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n = strnlen(tmp, 256);
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// Output number with alignment and padding
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size -= n;
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if (!(flags & (ZEROPAD | LEFT)))
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while (size-- > 0)
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*str++ = ' ';
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if (sign)
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*str++ = sign;
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if (!(flags & LEFT))
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while (size-- > 0)
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*str++ = c;
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for (i = 0; i < n; i++)
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*str++ = tmp[i];
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while (size-- > 0)
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*str++ = ' ';
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return str;
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}
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#endif
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static int
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ee_vsprintf(char *buf, const char *fmt, va_list args)
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{
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int len;
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unsigned long num;
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int i, base;
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char * str;
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char * s;
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int flags; // Flags to number()
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int field_width; // Width of output field
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int precision; // Min. # of digits for integers; max number of chars for
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// from string
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int qualifier; // 'h', 'l', or 'L' for integer fields
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for (str = buf; *fmt; fmt++)
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{
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if (*fmt != '%')
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{
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*str++ = *fmt;
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continue;
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}
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// Process flags
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flags = 0;
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repeat:
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fmt++; // This also skips first '%'
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switch (*fmt)
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{
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case '-':
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flags |= LEFT;
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goto repeat;
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case '+':
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flags |= PLUS;
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goto repeat;
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case ' ':
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flags |= SPACE;
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goto repeat;
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case '#':
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flags |= HEX_PREP;
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goto repeat;
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case '0':
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flags |= ZEROPAD;
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goto repeat;
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}
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// Get field width
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field_width = -1;
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if (is_digit(*fmt))
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field_width = skip_atoi(&fmt);
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else if (*fmt == '*')
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{
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fmt++;
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field_width = va_arg(args, int);
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if (field_width < 0)
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{
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field_width = -field_width;
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flags |= LEFT;
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}
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}
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// Get the precision
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precision = -1;
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if (*fmt == '.')
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{
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++fmt;
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if (is_digit(*fmt))
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precision = skip_atoi(&fmt);
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else if (*fmt == '*')
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{
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++fmt;
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precision = va_arg(args, int);
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}
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if (precision < 0)
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precision = 0;
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}
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// Get the conversion qualifier
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qualifier = -1;
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if (*fmt == 'l' || *fmt == 'L')
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{
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qualifier = *fmt;
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fmt++;
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}
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// Default base
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base = 10;
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switch (*fmt)
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{
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case 'c':
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if (!(flags & LEFT))
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while (--field_width > 0)
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*str++ = ' ';
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*str++ = (unsigned char)va_arg(args, int);
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while (--field_width > 0)
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*str++ = ' ';
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continue;
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case 's':
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s = va_arg(args, char *);
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if (!s)
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s = "<NULL>";
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len = strnlen(s, precision);
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if (!(flags & LEFT))
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while (len < field_width--)
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*str++ = ' ';
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for (i = 0; i < len; ++i)
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*str++ = *s++;
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while (len < field_width--)
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*str++ = ' ';
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continue;
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case 'p':
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if (field_width == -1)
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{
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field_width = 2 * sizeof(void *);
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flags |= ZEROPAD;
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}
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str = number(str,
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(unsigned long)va_arg(args, void *),
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16,
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field_width,
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precision,
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flags);
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continue;
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case 'A':
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flags |= UPPERCASE;
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case 'a':
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if (qualifier == 'l')
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str = eaddr(str,
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va_arg(args, unsigned char *),
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field_width,
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precision,
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flags);
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else
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str = iaddr(str,
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va_arg(args, unsigned char *),
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field_width,
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precision,
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flags);
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continue;
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// Integer number formats - set up the flags and "break"
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case 'o':
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base = 8;
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break;
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case 'X':
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flags |= UPPERCASE;
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case 'x':
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base = 16;
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break;
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case 'd':
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case 'i':
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flags |= SIGN;
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case 'u':
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break;
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#if HAS_FLOAT
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case 'f':
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str = flt(str,
|
|
va_arg(args, double),
|
|
field_width,
|
|
precision,
|
|
*fmt,
|
|
flags | SIGN);
|
|
continue;
|
|
|
|
#endif
|
|
|
|
default:
|
|
if (*fmt != '%')
|
|
*str++ = '%';
|
|
if (*fmt)
|
|
*str++ = *fmt;
|
|
else
|
|
--fmt;
|
|
continue;
|
|
}
|
|
|
|
if (qualifier == 'l')
|
|
num = va_arg(args, unsigned long);
|
|
else if (flags & SIGN)
|
|
num = va_arg(args, int);
|
|
else
|
|
num = va_arg(args, unsigned int);
|
|
|
|
str = number(str, num, base, field_width, precision, flags);
|
|
}
|
|
|
|
*str = '\0';
|
|
return str - buf;
|
|
}
|
|
|
|
#define UART0_BASE_ADDR 0xffff0000ULL
|
|
|
|
#define UART_REG_TXFIFO 0x00
|
|
#define UART_REG_RXFIFO 0x04
|
|
#define UART_REG_TXCTRL 0x08
|
|
#define UART_REG_RXCTRL 0x0c
|
|
#define UART_REG_IE 0x10
|
|
#define UART_REG_IP 0x14
|
|
#define UART_REG_DIV 0x18
|
|
#define UART_TXEN 0x1
|
|
|
|
#define UART0_REG(ADDR) *((ee_u32*) (UART0_BASE_ADDR + ADDR))
|
|
|
|
void
|
|
uart_send_char(char c)
|
|
{
|
|
while (UART0_REG(UART_REG_TXFIFO) & 0x80000000) ;
|
|
UART0_REG(UART_REG_TXFIFO) = (unsigned char)c;
|
|
}
|
|
|
|
int
|
|
ee_printf(const char *fmt, ...)
|
|
{
|
|
char buf[1024], *p;
|
|
va_list args;
|
|
int n = 0;
|
|
|
|
va_start(args, fmt);
|
|
ee_vsprintf(buf, fmt, args);
|
|
va_end(args);
|
|
p = buf;
|
|
while (*p)
|
|
{
|
|
uart_send_char(*p);
|
|
n++;
|
|
p++;
|
|
}
|
|
|
|
return n;
|
|
}
|