- initial import

git-svn-id: http://moon:8086/svn/mips@1 a8ebac50-d88d-4704-bea3-6648445a41b3
2014-07-20 15:01:37 +00:00
commit 26291bca3d
1549 changed files with 3997969 additions and 0 deletions
@@ -0,0 +1,177 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "libsys.h"
+
+UINT8 g_pattern8[] = {0x01, 0x02, 0x03, 0x4, 0x05, 0x06, 0x07, 0x08};
+UINT16 g_pattern16[sizeof(g_pattern8)/2] = {0};
+UINT32 g_pattern32[sizeof(g_pattern8)/4] = {0};
+UINT8 _g_bytes[4] = {0x12, 0x34, 0x56, 0x78};
+UINT8 _g_bytes2[4] = {0};
+
+void MakePattern(void)
+{
+
+	int i;
+
+	UINT16 *pPat16 = (UINT16*)g_pattern8;
+	UINT32 *pPat32 = (UINT32*)g_pattern8;
+
+
+	for (i=0; i < sizeof(g_pattern16)/2; i++)
+	{
+		g_pattern16[i] =  pPat16[i];
+	}
+
+	for (i=0; i < sizeof(g_pattern32)/4; i++)
+	{
+		g_pattern32[i] =  pPat32[i];
+	}
+}
+
+void PrintPattern(void)
+{
+
+	int i;
+
+	printf("Pattern 8bit:\n");
+	for (i=0; i < sizeof(g_pattern8); i++)
+	{
+		printf("%02X ", g_pattern8[i]);
+	}
+	printf("\n");
+
+	printf("Pattern 16bit:\n");
+	for (i=0; i < sizeof(g_pattern16)/2; i++)
+	{
+		printf("%04X ", g_pattern16[i]);
+	}
+	printf("\n");
+
+	printf("Pattern 32bit:\n");
+	for (i=0; i < sizeof(g_pattern32)/4; i++)
+	{
+		printf("%08X ", g_pattern32[i]);
+	}
+	printf("\n");
+}
+
+int IsEndianBig(void)
+{
+	int i, result;
+
+	UINT8 *pBuf8;
+	UINT16 *pBuf16;
+	UINT32 *pBuf32;
+	UINT16 halve;
+	UINT32 word;
+
+
+	halve = 0x1234;
+	word = 0x12345678;
+
+	result = -1;
+
+	for (i=0; i < 4; i++)
+		_g_bytes2[i] = _g_bytes[i];
+
+	pBuf8 = (UINT8*)&word;
+	if (((*pBuf8+0) == 0x12) && (*(pBuf8+1) == 0x34) && (*(pBuf8+2) == 0x56) && (*(pBuf8+3) == 0x78))
+	{
+		pBuf8 = (UINT8*)&halve;
+		if (((*pBuf8+0) == 0x12) && (*(pBuf8+1) == 0x34))
+		{
+			result = 1;
+		}
+	}
+
+	pBuf8 = (UINT8*)&word;
+	if (((*pBuf8+0) == 0x78) && (*(pBuf8+1) == 0x56) && (*(pBuf8+2) == 0x34) && (*(pBuf8+3) == 0x12))
+	{
+		pBuf8 = (UINT8*)&halve;
+		if (((*pBuf8+0) == 0x34) && (*(pBuf8+1) == 0x12))
+		{
+			result = 0;
+		}
+	}
+	return result;
+}
+
+void PrintCPUinfo(void)
+{
+	int result, rev_id;
+	int cache_size, cache_line;
+	int eb;
+
+	char *cpu_type_str[7] = {"invalid", "R2000", "R3000", "R6000", "R4000", "reserved", "R6000A"};
+
+	// Print Status register
+	result = CP0_SR_read();
+
+	printf("--------------------------------------------------\n");
+	printf("Status   : %8.8X\n", result);
+
+	// Print Revision
+	result = CP0_PRID_read();
+	rev_id = (result >> 8) & 0xFF;
+	printf("CPU type : MIPS ");
+	if ((rev_id > 0) && (rev_id < 0x07))
+	{
+		printf(cpu_type_str[rev_id]);
+		printf(" Rev. ");
+		rev_id = result & 0xFF;
+		printf("%d", rev_id);
+	}
+	else
+		printf("Unknown");
+
+	eb = IsEndianBig();
+	if (eb > 0)
+		printf(" [Big-endian]\n");
+	if (eb == 0)
+		printf(" [Little-endian]\n");
+	if (eb < 0)
+		printf(" [Unknown endian]\n");
+
+	printf("--------------------------------------------------\n");
+
+}
+
+int main (void)
+{
+	int eb;
+
+	setbuf(stdout, NULL);
+	CP0_SR_write(CP0_SR_read() & ~(1 << 25));
+
+	PrintCPUinfo();
+
+	if (IsEndianBig() == 1)
+		printf("Endian is big\n");
+	if (IsEndianBig() == 0)
+		printf("Endian is little\n");
+
+	PrintBuffer8(_g_bytes2, 8, 4);
+	MakePattern();
+	PrintPattern();
+
+	memset(g_pattern16, 0, sizeof(g_pattern16));
+	memset(g_pattern32, 0, sizeof(g_pattern32));
+
+	CP0_SR_write(CP0_SR_read() | (1 << 25));
+	eb = IsEndianBig();
+
+	MakePattern();
+
+	CP0_SR_write(CP0_SR_read() & ~(1 << 25));
+	if (eb == 1)
+		printf("Endian is big\n");
+	if (eb == 0)
+		printf("Endian is little\n");
+	PrintBuffer8(_g_bytes2, 8, 4);
+
+	PrintPattern();
+
+	return 0;
+}
+