Initial version

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@272 cc03376c-175c-47c8-b038-4cd826a8556b
2009-01-21 08:52:05 +00:00
parent 25e3d4f36f
commit 8867efa451
50 changed files with 11439 additions and 0 deletions
@@ -0,0 +1,142 @@
+#include <sys/times.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <stdlib.h>
+#include "libsys_boot.h"
+
+// ---------------------------------------------------------------------------------
+// MIPS specific
+UINT32 CP0_SR_read(void)
+{
+	UINT32 result;
+
+	__asm
+	(
+		"mfc0   %[val], $12\n"
+		: [val] "=r" (result)
+	);
+
+	return result;
+}
+
+void CP0_SR_write(UINT32 val)
+{
+	__asm
+	(
+		"mtc0   %[val], $12\n"
+		: /* no output */
+		: [val] "r" (val)
+	);
+}
+
+UINT32 CP0_CR_read(void)
+{
+	UINT32 result;
+
+	__asm
+	(
+		"mfc0   %[val], $13\n"
+		: [val] "=r" (result)
+	);
+
+	return result;
+}
+
+void CP0_CR_write(UINT32 val)
+{
+	__asm
+	(
+		"mtc0   %[val], $13\n"
+		:
+		: [val] "r" (val)
+	);
+}
+
+UINT32 CP0_PRID_read(void)
+{
+	UINT32 result;
+
+	__asm
+	(
+		"mfc0   %[val], $15\n"
+		: [val] "=r" (result)
+	);
+
+	return result;
+}
+
+// ---------------------------------------------------------------------------------
+char readchar(void)
+{
+	volatile UINT32 *pUART_stat = (UINT32*)sys_uart_stat;
+	volatile UINT32 *pUART_data = (UINT32*)sys_uart_data;
+
+	while(!(0x10 & *pUART_stat));
+
+	return (char)*pUART_data;
+}
+
+void writechar(char c)
+{
+	volatile UINT32 *pUART_stat = (UINT32*)sys_uart_stat;
+	volatile UINT32 *pUART_data = (UINT32*)sys_uart_data;
+
+	while((0x02 & *pUART_stat) != 0);
+
+	*pUART_data = (UINT32)c;
+}
+
+void _putchar(char c)
+{
+	if (c == 0x0A)
+	{
+		writechar(0x0D);
+	}
+	writechar(c);
+}
+
+int sputs(char *pStr)
+{
+	char *start;
+	start = pStr;
+
+	while(*pStr)
+		_putchar(*(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;
+
+		_putchar(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;
+	}
+}
+