Add various debugging code for serial, this got changed around a
lot in subsequent patches and printk() / vsprintf() was taken out
in the end.
Signed-off-by: Andy Green <[EMAIL PROTECTED]>
---
include/serial.h | 12 ++
src/ctype.c | 27 ++++
src/ctype.h | 45 +++++++
src/serial.c | 30 ++++-
src/sprintf.c | 342 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 452 insertions(+), 4 deletions(-)
create mode 100644 src/ctype.c
create mode 100644 src/ctype.h
create mode 100644 src/sprintf.c
diff --git a/include/serial.h b/include/serial.h
index 1a773eb..4e0f0b4 100644
--- a/include/serial.h
+++ b/include/serial.h
@@ -20,6 +20,11 @@
* MA 02111-1307 USA
*/
+#include <stdarg.h>
+
+#ifndef __SERIAL_H__
+#define __SERIAL_H__
+
#define UART0 0
#define UART1 1
#define UART2 2
@@ -95,10 +100,15 @@
#define rGPHDAT (*(volatile unsigned *)0x56000074)
#define rGPHUP (*(volatile unsigned *)0x56000078)
-#define rGPJCON (*(volatile unsigned *)0x560000d0)
//Port J control
+#define rGPJCON (*(volatile unsigned *)0x560000d0)
//Port J control
#define rGPJDAT (*(volatile unsigned *)0x560000d4)
//Port J data
#define rGPJUP (*(volatile unsigned *)0x560000d8) //Port
J data
void port_init(void);
void serial_init (const int ubrdiv_val,const int uart);
void serial_putc (const int uart,const char c);
+int printk(const char *fmt, ...);
+int vsprintf(char *buf, const char *fmt, va_list args);
+int puts(const char *string);
+
+#endif
diff --git a/src/ctype.c b/src/ctype.c
new file mode 100644
index 0000000..ce1d315
--- /dev/null
+++ b/src/ctype.c
@@ -0,0 +1,27 @@
+#include "ctype.h"
+
+unsigned char _ctype[] = {
+_C,_C,_C,_C,_C,_C,_C,_C, /* 0-7 */
+_C,_C|_S,_C|_S,_C|_S,_C|_S,_C|_S,_C,_C, /* 8-15 */
+_C,_C,_C,_C,_C,_C,_C,_C, /* 16-23 */
+_C,_C,_C,_C,_C,_C,_C,_C, /* 24-31 */
+_S|_SP,_P,_P,_P,_P,_P,_P,_P, /* 32-39 */
+_P,_P,_P,_P,_P,_P,_P,_P, /* 40-47 */
+_D,_D,_D,_D,_D,_D,_D,_D, /* 48-55 */
+_D,_D,_P,_P,_P,_P,_P,_P, /* 56-63 */
+_P,_U|_X,_U|_X,_U|_X,_U|_X,_U|_X,_U|_X,_U, /* 64-71 */
+_U,_U,_U,_U,_U,_U,_U,_U, /* 72-79 */
+_U,_U,_U,_U,_U,_U,_U,_U, /* 80-87 */
+_U,_U,_U,_P,_P,_P,_P,_P, /* 88-95 */
+_P,_L|_X,_L|_X,_L|_X,_L|_X,_L|_X,_L|_X,_L, /* 96-103 */
+_L,_L,_L,_L,_L,_L,_L,_L, /* 104-111 */
+_L,_L,_L,_L,_L,_L,_L,_L, /* 112-119 */
+_L,_L,_L,_P,_P,_P,_P,_C, /* 120-127 */
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 128-143 */
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 144-159 */
+_S|_SP,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P, /* 160-175 */
+_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P, /* 176-191 */
+_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U, /* 192-207 */
+_U,_U,_U,_U,_U,_U,_U,_P,_U,_U,_U,_U,_U,_U,_U,_L, /* 208-223 */
+_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L, /* 224-239 */
+_L,_L,_L,_L,_L,_L,_L,_P,_L,_L,_L,_L,_L,_L,_L,_L}; /* 240-255 */
diff --git a/src/ctype.h b/src/ctype.h
new file mode 100644
index 0000000..ed65522
--- /dev/null
+++ b/src/ctype.h
@@ -0,0 +1,45 @@
+#define _U 0x01 /* upper */
+#define _L 0x02 /* lower */
+#define _D 0x04 /* digit */
+#define _C 0x08 /* cntrl */
+#define _P 0x10 /* punct */
+#define _S 0x20 /* white space (space/lf/tab) */
+#define _X 0x40 /* hex digit */
+#define _SP 0x80 /* hard space (0x20) */
+
+extern unsigned char _ctype[];
+
+#define __ismask(x) (_ctype[(int)(unsigned char)(x)])
+
+#define isalnum(c) ((__ismask(c)&(_U|_L|_D)) != 0)
+#define isalpha(c) ((__ismask(c)&(_U|_L)) != 0)
+#define iscntrl(c) ((__ismask(c)&(_C)) != 0)
+#define isdigit(c) ((__ismask(c)&(_D)) != 0)
+#define isgraph(c) ((__ismask(c)&(_P|_U|_L|_D)) != 0)
+#define islower(c) ((__ismask(c)&(_L)) != 0)
+#define isprint(c) ((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)
+#define ispunct(c) ((__ismask(c)&(_P)) != 0)
+#define isspace(c) ((__ismask(c)&(_S)) != 0)
+#define isupper(c) ((__ismask(c)&(_U)) != 0)
+#define isxdigit(c) ((__ismask(c)&(_D|_X)) != 0)
+
+#define isascii(c) (((unsigned char)(c))<=0x7f)
+#define toascii(c) (((unsigned char)(c))&0x7f)
+
+static inline unsigned char __tolower(unsigned char c)
+{
+ if (isupper(c))
+ c -= 'A'-'a';
+ return c;
+}
+
+static inline unsigned char __toupper(unsigned char c)
+{
+ if (islower(c))
+ c -= 'a'-'A';
+ return c;
+}
+
+#define tolower(c) __tolower(c)
+#define toupper(c) __toupper(c)
+
diff --git a/src/serial.c b/src/serial.c
index c617a73..09bb177 100644
--- a/src/serial.c
+++ b/src/serial.c
@@ -23,6 +23,8 @@
#include "serial.h"
#include "blink_led.h"
+#define DEBUG_CONSOLE_UART 2
+
void serial_init (const int ubrdiv_val,const int uart)
{
switch(uart)
@@ -60,17 +62,14 @@ void serial_putc (const int uart,const char c)
{
case UART0:
while ( !( rUTRSTAT0 & 0x2 ) );
- delay(1);
WrUTXH0(c);
break;
case UART1:
while ( !( rUTRSTAT1 & 0x2 ) );
- delay(1);
WrUTXH1(c);
break;
case UART2:
while ( !( rUTRSTAT2 & 0x2 ) );
- delay(1);
WrUTXH2(c);
break;
default:
@@ -78,6 +77,31 @@ void serial_putc (const int uart,const char c)
}
}
+int puts(const char *string)
+{
+ while (*string)
+ serial_putc(DEBUG_CONSOLE_UART, *string++);
+ serial_putc(DEBUG_CONSOLE_UART, '\n');
+
+ return 1;
+}
+
+int printk(const char *fmt, ...)
+{
+ va_list args;
+ int r;
+ static char buf[512];
+ char *p = buf;
+
+ va_start(args, fmt);
+ r = vsprintf(buf, fmt, args);
+ va_end(args);
+
+ while (*p)
+ serial_putc(DEBUG_CONSOLE_UART, *p++);
+
+ return r;
+}
/*
* =====================================================================
diff --git a/src/sprintf.c b/src/sprintf.c
new file mode 100644
index 0000000..21253a1
--- /dev/null
+++ b/src/sprintf.c
@@ -0,0 +1,342 @@
+/*
+ * linux/lib/vsprintf.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ */
+
+/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
+/*
+ * Wirzenius wrote this portably, Torvalds fucked it up :-)
+ */
+
+#include <stdarg.h>
+#include "ctype.h"
+
+
+
+int strnlen(const char * s, int count)
+{
+ const char *sc;
+
+ for (sc = s; count-- && *sc != '\0'; ++sc)
+ /* nothing */;
+ return sc - s;
+}
+
+
+unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
+{
+ unsigned long result = 0,value;
+
+ if (!base) {
+ base = 10;
+ if (*cp == '0') {
+ base = 8;
+ cp++;
+ if ((toupper(*cp) == 'X') && isxdigit(cp[1])) {
+ cp++;
+ base = 16;
+ }
+ }
+ } else if (base == 16) {
+ if (cp[0] == '0' && toupper(cp[1]) == 'X')
+ cp += 2;
+ }
+ while (isxdigit(*cp) &&
+ (value = isdigit(*cp) ? *cp-'0' : toupper(*cp)-'A'+10) < base) {
+ result = result*base + value;
+ cp++;
+ }
+ if (endp)
+ *endp = (char *)cp;
+ return result;
+}
+
+long simple_strtol(const char *cp,char **endp,unsigned int base)
+{
+ if(*cp=='-')
+ return -simple_strtoul(cp+1,endp,base);
+ return simple_strtoul(cp,endp,base);
+}
+
+/* we use this so that we can do without the ctype library */
+#define is_digit(c) ((c) >= '0' && (c) <= '9')
+
+static int skip_atoi(const char **s)
+{
+ int i=0;
+
+ while (is_digit(**s))
+ i = i*10 + *((*s)++) - '0';
+ return i;
+}
+
+#define ZEROPAD 1 /* pad with zero */
+#define SIGN 2 /* unsigned/signed long */
+#define PLUS 4 /* show plus */
+#define SPACE 8 /* space if plus */
+#define LEFT 16 /* left justified */
+#define SPECIAL 32 /* 0x */
+#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
+
+
+int raise(int n)
+{
+ return 0;
+}
+
+#define do_div(n,base) ({ \
+ int __res; \
+ __res = (n) - (((n) / (base)) * (base)); \
+ n = ((unsigned long) n) / base; \
+ __res; \
+})
+
+static char * number(char * str, long num, unsigned int base, int size, int
precision ,int type)
+{
+ char c,sign,tmp[66];
+ const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
+ int i;
+
+ if (type & LARGE)
+ digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+ if (type & LEFT)
+ type &= ~ZEROPAD;
+ if (base < 2 || base > 36)
+ return 0;
+ c = (type & ZEROPAD) ? '0' : ' ';
+ sign = 0;
+ if (type & SIGN) {
+ if (num < 0) {
+ sign = '-';
+ num = -num;
+ size--;
+ } else if (type & PLUS) {
+ sign = '+';
+ size--;
+ } else if (type & SPACE) {
+ sign = ' ';
+ size--;
+ }
+ }
+ if (type & SPECIAL) {
+ if (base == 16)
+ size -= 2;
+ else if (base == 8)
+ size--;
+ }
+ i = 0;
+ if (num == 0)
+ tmp[i++]='0';
+ else while (num != 0)
+ tmp[i++] = digits[do_div(num,base)];
+ if (i > precision)
+ precision = i;
+ size -= precision;
+ if (!(type&(ZEROPAD+LEFT)))
+ while(size-->0)
+ *str++ = ' ';
+ if (sign)
+ *str++ = sign;
+ if (type & SPECIAL) {
+ if (base==8)
+ *str++ = '0';
+ else if (base==16) {
+ *str++ = '0';
+ *str++ = digits[33];
+ }
+ }
+ if (!(type & LEFT))
+ while (size-- > 0)
+ *str++ = c;
+ while (i < precision--)
+ *str++ = '0';
+ while (i-- > 0)
+ *str++ = tmp[i];
+ while (size-- > 0)
+ *str++ = ' ';
+ return str;
+}
+
+/* Forward decl. needed for IP address printing stuff... */
+int sprintf(char * buf, const char *fmt, ...);
+
+int vsprintf(char *buf, const char *fmt, va_list args)
+{
+ int len;
+ unsigned long num;
+ int i, base;
+ char * str;
+ const char *s;
+
+ int flags; /* flags to number() */
+
+ int field_width; /* width of output field */
+ int precision; /* min. # of digits for integers; max
+ number of chars for from string */
+ int qualifier; /* 'h', 'l', or 'q' for integer fields */
+
+ for (str=buf ; *fmt ; ++fmt) {
+ if (*fmt != '%') {
+ *str++ = *fmt;
+ continue;
+ }
+
+ /* process flags */
+ flags = 0;
+ repeat:
+ ++fmt; /* this also skips first '%' */
+ switch (*fmt) {
+ case '-': flags |= LEFT; goto repeat;
+ case '+': flags |= PLUS; goto repeat;
+ case ' ': flags |= SPACE; goto repeat;
+ case '#': flags |= SPECIAL; goto repeat;
+ case '0': flags |= ZEROPAD; goto repeat;
+ }
+
+ /* get field width */
+ field_width = -1;
+ if (is_digit(*fmt))
+ field_width = skip_atoi(&fmt);
+ else if (*fmt == '*') {
+ ++fmt;
+ /* it's the next argument */
+ field_width = va_arg(args, int);
+ if (field_width < 0) {
+ field_width = -field_width;
+ flags |= LEFT;
+ }
+ }
+
+ /* get the precision */
+ precision = -1;
+ if (*fmt == '.') {
+ ++fmt;
+ if (is_digit(*fmt))
+ precision = skip_atoi(&fmt);
+ else if (*fmt == '*') {
+ ++fmt;
+ /* it's the next argument */
+ precision = va_arg(args, int);
+ }
+ if (precision < 0)
+ precision = 0;
+ }
+
+ /* get the conversion qualifier */
+ qualifier = -1;
+ if (*fmt == 'h' || *fmt == 'l' || *fmt == 'q') {
+ qualifier = *fmt;
+ if (qualifier == 'l' && *(fmt+1) == 'l') {
+ qualifier = 'q';
+ ++fmt;
+ }
+ ++fmt;
+ }
+
+ /* default base */
+ base = 10;
+
+ switch (*fmt) {
+ case 'c':
+ if (!(flags & LEFT))
+ while (--field_width > 0)
+ *str++ = ' ';
+ *str++ = (unsigned char) va_arg(args, int);
+ while (--field_width > 0)
+ *str++ = ' ';
+ continue;
+
+ case 's':
+ s = va_arg(args, char *);
+ if (!s)
+ s = "<NULL>";
+
+ len = strnlen(s, precision);
+
+ if (!(flags & LEFT))
+ while (len < field_width--)
+ *str++ = ' ';
+ for (i = 0; i < len; ++i)
+ *str++ = *s++;
+ while (len < field_width--)
+ *str++ = ' ';
+ continue;
+
+ case 'p':
+ if (field_width == -1) {
+ field_width = 2*sizeof(void *);
+ flags |= ZEROPAD;
+ }
+ str = number(str,
+ (unsigned long) va_arg(args, void *), 16,
+ field_width, precision, flags);
+ continue;
+
+
+ case 'n':
+ if (qualifier == 'l') {
+ long * ip = va_arg(args, long *);
+ *ip = (str - buf);
+ } else {
+ int * ip = va_arg(args, int *);
+ *ip = (str - buf);
+ }
+ continue;
+
+ case '%':
+ *str++ = '%';
+ continue;
+
+ /* integer number formats - set up the flags and "break" */
+ case 'o':
+ base = 8;
+ break;
+
+ case 'X':
+ flags |= LARGE;
+ case 'x':
+ base = 16;
+ break;
+
+ case 'd':
+ case 'i':
+ flags |= SIGN;
+ case 'u':
+ break;
+
+ default:
+ *str++ = '%';
+ if (*fmt)
+ *str++ = *fmt;
+ else
+ --fmt;
+ continue;
+ }
+ if (qualifier == 'l')
+ num = va_arg(args, unsigned long);
+ else if (qualifier == 'h') {
+ num = (unsigned short) va_arg(args, int);
+ if (flags & SIGN)
+ num = (short) num;
+ } 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;
+}
+
+int sprintf(char * buf, const char *fmt, ...)
+{
+ va_list args;
+ int i;
+
+ va_start(args, fmt);
+ i=vsprintf(buf,fmt,args);
+ va_end(args);
+ return i;
+}
+
