RC-1 bit, Jackrabbit Labs

Makefile

@@ -0,0 +1,33 @@
+CC=gcc
+CFLAGS= -g3 -O0 -Wall -Wextra
+INCLUDE_DIR=/usr/local/include/
+LIB_DIR=/usr/local/lib
+INCLUDE_PATH=-I $(INCLUDE_DIR) 
+LIB_PATH=-L $(LIB_DIR)
+LIBS=
+
+all: testbench
+
+testbench: testbench.c bit.o
+	$(CC) $^ $(CFLAGS) $(INCLUDE_PATH) $(LIB_PATH) $(LIBS) -o $@ 
+
+libbit.a: bit.o
+	ar rcs $@ $^
+
+bit.o: bit.c bit.h
+	$(CC) -c $< $(CFLAGS) $(INCLUDE_PATH) -o $@ 
+
+clean:
+	rm -rf ./*.o ./*.a testbench
+
+install: libbit.a 
+	sudo cp libbit.a $(LIB_DIR)
+	sudo cp bit.h $(INCLUDE_DIR)
+
+.PHONY: all clean install
+
+# Variables 
+# $^ 	Will expand to be all the sensitivity list
+# $< 	Will expand to be the frist file in sensitivity list
+# $@	Will expand to be the target name (the left side of the ":" )
+# -c 	gcc will compile but not try and link 

bit.c

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+/* INCLUDES ==================================================================*/
+
+/* 
+ */
+//#include <stdlib.h>
+
+/* printf()
+ */
+#include <stdio.h>
+
+/* bswap_32(x) 
+ */
+#include <byteswap.h>
+
+#include "bit.h"
+
+/* MACROS ====================================================================*/
+
+/* ENUMERATIONS ==============================================================*/
+
+/* STRUCTS ===================================================================*/
+
+/* GLOBAL VARIABLES ==========================================================*/
+
+/* PROTOTYPES ================================================================*/
+
+/* FUNCTIONS =================================================================*/
+
+/*
+ * Print a unsigned char buffer 
+ */
+void bit_print_buffer_u8(void *buf, unsigned long len, unsigned long width, int print_header)
+{
+	unsigned long i, j, k, rows;
+	__u8 *ptr;
+
+	/* STEP 1: Verify Inputs */
+	if ( buf == NULL) 
+		return;
+
+	if ( len == 0 )
+		return;
+	
+	if ( width == 0 )
+		width = BIT_DEFAULT_WIDTH;
+	
+	if ( width < BIT_MIN_WIDTH )
+		width = BIT_MIN_WIDTH;
+
+	ptr = (__u8*) buf;
+
+	/* Compute the number of rows to print */
+	rows = len / width;
+	if ( (len % width) > 0)
+		rows++;
+
+	/* Print index '0x0000: ' */
+	if (print_header) {
+		printf("            ");
+		for ( i = 0 ; i < width ; i++ )
+			printf("%02lu ", i);
+		printf("\n");
+	}
+
+	k = 0;
+	for ( i = 0 ; i < rows ; i++ ) {
+		printf("0x%08lx: ", i * width);
+		for ( j = 0 ; j < width ; j++ ) {
+			if (k >= len)
+				break;
+
+			printf("%02x ", ptr[i*width + j]);
+
+			k++;
+		}
+		printf("\n");
+	}
+
+	return;
+}
+
+/*
+ * Print a unsigned long buffer 
+ */
+void bit_print_buffer_u32(void *buf, unsigned long len, int print_header, int byteswap)
+{
+	unsigned long i, rows;
+	__u32 *ptr;
+
+	/* STEP 1: Verify Inputs */
+	if ( buf == NULL) 
+		return;
+
+	if ( len == 0 )
+		return;
+	
+	ptr = (__u32*) buf;
+
+	/* Compute the number of rows to print */
+	rows = len;
+
+	/* Print index '0x0000: ' */
+	if (print_header) {
+		printf("            ");
+		for ( i = 0 ; i < sizeof(__u32) ; i++ )
+			printf("%02lu", i);
+		printf("\n");
+	}
+
+	/* Print data */
+	for ( i = 0 ; i < rows ; i++ ) {
+		if (byteswap) 
+			printf("0x%08lx: %08x\n", i, bswap_32(ptr[i]));
+		else 
+			printf("0x%08lx: %08x\n", i, ptr[i]);
+	}
+
+	return;
+}
+

bit.h

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+#ifndef _BIT_H
+#define _BIT_H
+
+/* INCLUDES ==================================================================*/
+
+#include <linux/types.h>
+
+/* MACROS ====================================================================*/
+
+//#define BIT_VERBOSE
+#define BIT_DEFAULT_WIDTH 16
+#define BIT_MIN_WIDTH 4
+
+#ifdef BIT_VERBOSE
+#define VERBOSE(v, m, f, t) 			({ if(v) printf("%d:%s %s\n",    t, f, m   ); })
+#define VERBOSE_INT(v, m, f, t, i) 		({ if(v) printf("%d:%s %s %d\n", t, f, m, i); })
+#define VERBOSE_STR(v, m, f, t, s) 		({ if(v) printf("%d:%s %s %s\n", t, f, m, s); })
+#else
+#define VERBOSE(v, m, f, t) 
+#define VERBOSE_INT(v, m, f, t, i)
+#define VERBOSE_STR(v, m, f, t, s) 
+#endif 
+
+/* ENUMERATIONS ==============================================================*/
+
+/* STRUCTS ===================================================================*/
+
+/* GLOBAL VARIABLES ==========================================================*/
+
+/* PROTOTYPES ================================================================*/
+
+void bit_print_buffer_u8(void *buf, unsigned long len, unsigned long width, int print_header);
+void bit_print_buffer_u32(void *buf, unsigned long len, int print_header, int byteswap);
+
+/* INLINE FUNCTIONS ==========================================================*/
+
+#endif //ifndef _BIT_H

testbench.c

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+
+/* INCLUDES ==================================================================*/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <linux/types.h>
+
+#include "bit.h"
+
+/* MACROS ====================================================================*/
+
+/* ENUMERATIONS ==============================================================*/
+
+/* STRUCTS ===================================================================*/
+
+/* GLOBAL VARIABLES ==========================================================*/
+
+/* PROTOTYPES ================================================================*/
+
+int main()
+{
+	int i;
+	__u8 *u8;
+	__u32 *u32;
+
+	/* Allocate memory */
+	u8 = (__u8*) malloc(1024);
+
+	/* Cast variables */
+	u32 = (__u32*) u8;
+
+	/* Fill with data */
+	for ( i = 0 ; i < 1024 ; i ++ ) 
+		u8[i] = i;	
+
+	printf("bit_print_buffer_u8() ------------------\n");
+	bit_print_buffer_u8(u8, 1024, 16, 1);
+
+	//printf("bit_print_buffer_u16() ------------------\n");
+	//bit_print_buffer_u8(u8, 1024/2, 16, 1);
+
+	printf("bit_print_buffer_u32() ------------------\n");
+	bit_print_buffer_u32(u32, 1024/4, 1, 1);
+
+	free(u8);
+
+	return 0;
+}