patch-2.4.19 linux-2.4.19/arch/mips/galileo-boards/ev64120/compressed/doit.c

• Lines: 76
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/galileo-boards/ev64120/compressed/doit.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/galileo-boards/ev64120/compressed/doit.c linux-2.4.19/arch/mips/galileo-boards/ev64120/compressed/doit.c
@@ -0,0 +1,75 @@
+/*
+ *    By RidgeRun Inc.
+ *
+ *    The input to this program is intended to be
+ *    a compressed linux kernel. The output of this
+ *    program is then a constructed *.S file which
+ *    defines a large data structure -- the contents
+ *    of which represent the compressed kernel which
+ *    can subsequently be used in a program designed
+ *    to access that struture for decompression at
+ *    runtime and then subsequent kernel bootup.
+ *
+ *    Example Usage:
+ *       ./doit < piggy.gz > piggy.S
+ *       
+ */
+
+#include <stdio.h>
+
+void printval(int i)
+{
+	int tth, th, h, t, d;
+
+	if (i > 99999) {
+		printf("Error - printval outofbounds\n");
+		return;
+	}
+
+	tth = 0;
+	th = 0;
+	//tth = (i) / 10000;
+	//th  = (i - (tth * 10000)) / 1000;
+	h = (i - ((tth * 10000) + (th * 1000))) / 100;
+	t = (i - ((tth * 10000) + (th * 1000) + (h * 100))) / 10;
+	d = (i - ((tth * 10000) + (th * 1000) + (h * 100) + (t * 10)));
+	//putchar(tth + '0');
+	//putchar(th + '0');
+	putchar(h + '0');
+	putchar(t + '0');
+	putchar(d + '0');
+}
+
+main(int argc, char **argv)
+{
+	int val;
+	int size = 0;
+	unsigned char c;
+
+	printf("gcc2_compiled.:\n");
+	printf("__gnu_compiled_c:\n");
+	printf("\t.globl linux_compressed_start\n");
+	printf("\t.text\n");
+	printf("\t.align 2\n");
+	printf("\t.type linux_compressed_start,@object\n");
+	printf("linux_compressed_start:\n");
+
+
+	val = getchar();
+	while (val != EOF) {
+		size++;
+		c = (unsigned char) (val & 0x00ff);
+		printf("\t.byte  ");
+		printval((int) c);
+		printf("\n");
+		val = getchar();
+	}
+	printf("\t.size linux_compressed_start,%d\n", size);
+	printf("\t.globl linux_compressed_size\n");
+	printf("\t.text\n");
+	printf("\t.align 2\n");
+	printf("\t.type linux_compressed_size,@object\n");
+	printf("\t.size linux_compressed_size,4\n");
+	printf("linux_compressed_size:\n");
+	printf("\t.word %d\n", size);
+}