Initial revision

Committed on the Free edition of March Hare Software CVSNT Server. Upgrade to CVS Suite for more features and support: http://march-hare.com/cvsnt/ git-svn-id: http://moon:8086/svn/vhdl/trunk@986 cc03376c-175c-47c8-b038-4cd826a8556b
2013-07-24 18:13:16 +00:00
parent e48ed8f595
commit cd2640e9c6
39 changed files with 7758 additions and 0 deletions
@@ -0,0 +1,179 @@
+#include <sys/times.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+
+char readchar(void)
+{
+	volatile char *pUART_stat = (char*)0x80000008;
+	volatile char *pUART_data = (char*)0x80000004;
+
+	while(!(0x10 & *pUART_stat));
+
+	return *pUART_data;
+}
+
+void writechar(char c)
+{
+	volatile char *pUART_stat = (char*)0x80000008;
+	volatile char *pUART_data = (char*)0x80000004;
+
+	while((0x02 & *pUART_stat) != 0);
+
+	*pUART_data = c;
+}
+
+clock_t times(struct tms *buffer)
+{
+	volatile long *pReg_usec = (long*)0x80000010;
+	volatile long *pReg_sec = (long*)0x80000014;
+	long sec;
+
+	sec = *pReg_sec;
+
+	if (buffer)
+	{
+		buffer->tms_utime = sec;
+		buffer->tms_stime = 0;
+		buffer->tms_cutime = 0;
+		buffer->tms_cstime = 0;
+	}
+
+	return (clock_t)sec;
+}
+
+int gettimeofday(struct timeval *tp, void *tzp)
+{
+	volatile long *pReg_usec = (long*)0x80000010;
+	volatile long *pReg_sec = (long*)0x80000014;
+
+	if (tp)
+	{
+		tp->tv_sec = *pReg_sec;
+		tp->tv_usec = *pReg_usec;
+	}
+
+	return 0;
+}
+
+int settimeofday(const struct timeval *tp, const struct timezone *tzp)
+{
+	volatile long *pReg_usec = (long*)0x80000010;
+	volatile long *pReg_sec = (long*)0x80000014;
+	div_t res;
+
+	res = div(tp->tv_usec, 1E6);
+
+	if (tp)
+	{
+		*pReg_usec = res.rem;
+		*pReg_sec  = tp->tv_sec + res.quot;
+	}
+
+	return 0;
+}
+
+caddr_t sbrk(int incr)
+{
+	extern char end;
+	static char *heap_end;
+	char *prev_heap_end;
+
+	if (heap_end == 0)
+		heap_end = &end;
+
+	prev_heap_end = heap_end;
+//	if (heap_end + incr > stack_ptr)
+//	{
+//		_write(1, "Heap and stack collision\n", 25);
+//		abort();
+//	}
+
+	heap_end += incr;
+	return (caddr_t) prev_heap_end;
+}
+
+int fstat(int file, struct stat *st)
+{
+	st->st_mode = S_IFCHR;
+	return 0;
+}
+
+int lseek(int file, int ptr, int dir)
+{
+	return 0;
+}
+
+int open(const char *name, int flags, int mode)
+{
+	return -1;
+}
+
+int close(int file)
+{
+	return -1;
+}
+
+int read(int file, char *ptr, int len)
+{
+	return 0;
+}
+
+int write(int file, char *ptr, int len)
+{
+	int i;
+
+	for (i=0; i < len; i++)
+		writechar(*ptr++);
+
+	return i;
+}
+
+int isatty(int file)
+{
+	return 1;
+}
+
+int sputs(char *pStr)
+{
+	char *start;
+	start = pStr;
+
+	while(*pStr)
+		writechar(*(pStr++));
+
+	return pStr - start;
+}
+
+void print_byte(char byte)
+{
+	int i;
+	unsigned char c, nibble;
+
+	for (i=0; i < 2; i++)
+	{
+		nibble = (char)((byte >> 4) & 0xF);
+		byte <<= 4;
+
+		if (nibble < 10)
+			c = nibble + '0';
+		else
+			c = nibble + 'A' - 10;
+
+		writechar(c);
+	}
+}
+
+void print_word(int word)
+{
+	int i;
+	unsigned char c, nibble;
+
+	for (i=0; i < 4; i++)
+	{
+		c = (char) (word >> 24);
+		print_byte(c);
+		word <<= 8;
+	}
+}
+