2 * arch/blackfin/kernel/kgdb_test.c - Blackfin kgdb tests
4 * Copyright 2005-2008 Analog Devices Inc.
6 * Licensed under the GPL-2 or later.
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/init.h>
12 #include <linux/proc_fs.h>
14 #include <asm/current.h>
15 #include <asm/uaccess.h>
17 #include <asm/blackfin.h>
19 /* Symbols are here for kgdb test to poke directly */
20 static char cmdline[256];
24 static int num1 __attribute__((l1_data));
26 void kgdb_l1_test(void) __attribute__((l1_text));
28 void kgdb_l1_test(void)
30 pr_alert("L1(before change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
31 pr_alert("L1 : code function addr = 0x%p\n", kgdb_l1_test);
33 pr_alert("L1(after change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
39 static int num2 __attribute__((l2));
40 void kgdb_l2_test(void) __attribute__((l2));
42 void kgdb_l2_test(void)
44 pr_alert("L2(before change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
45 pr_alert("L2 : code function addr = 0x%p\n", kgdb_l2_test);
47 pr_alert("L2(after change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
52 noinline int kgdb_test(char *name, int len, int count, int z)
54 pr_alert("kgdb name(%d): %s, %d, %d\n", len, name, count, z);
60 kgdb_test_proc_read(struct file *file, char __user *buf,
61 size_t count, loff_t *ppos)
63 kgdb_test("hello world!", 12, 0x55, 0x10);
75 kgdb_test_proc_write(struct file *file, const char __user *buffer,
76 size_t count, loff_t *pos)
78 len = min_t(size_t, 255, count);
79 memcpy(cmdline, buffer, count);
85 static const struct file_operations kgdb_test_proc_fops = {
87 .read = kgdb_test_proc_read,
88 .write = kgdb_test_proc_write,
89 .llseek = noop_llseek,
92 static int __init kgdbtest_init(void)
94 struct proc_dir_entry *entry;
100 entry = proc_create("kgdbtest", 0, NULL, &kgdb_test_proc_fops);
107 static void __exit kgdbtest_exit(void)
109 remove_proc_entry("kgdbtest", NULL);
112 module_init(kgdbtest_init);
113 module_exit(kgdbtest_exit);
114 MODULE_LICENSE("GPL");