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authorMike Frysinger <vapier.adi@gmail.com>2009-01-07 23:14:39 +0800
committerBryan Wu <cooloney@kernel.org>2009-01-07 23:14:39 +0800
commit459249aa2d9ae02f49479a2096e5372ccc29c9be (patch)
tree9da223c667b0446f97dd2ac872dfddc0c76d0979 /arch/blackfin/kernel/kgdb_test.c
parentdbdf20db537a5369c65330f878ad4905020a8bfa (diff)
Blackfin arch: merge kgdb test code using common CONFIG_KGDB_TESTS
[Grace Pan <grace.pan@analog.com>: Add case for kgdb test in l1 and l2] Signed-off-by: Grace Pan <grace.pan@analog.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/kernel/kgdb_test.c')
-rw-r--r--arch/blackfin/kernel/kgdb_test.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/kgdb_test.c b/arch/blackfin/kernel/kgdb_test.c
new file mode 100644
index 00000000000..3dba9c17304
--- /dev/null
+++ b/arch/blackfin/kernel/kgdb_test.c
@@ -0,0 +1,123 @@
+/*
+ * arch/blackfin/kernel/kgdb_test.c - Blackfin kgdb tests
+ *
+ * Copyright 2005-2008 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+
+#include <asm/current.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <asm/blackfin.h>
+
+static char cmdline[256];
+static unsigned long len;
+
+static int num1 __attribute__((l1_data));
+
+void kgdb_l1_test(void) __attribute__((l1_text));
+
+void kgdb_l1_test(void)
+{
+ printk(KERN_ALERT "L1(before change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
+ printk(KERN_ALERT "L1 : code function addr = 0x%p\n", kgdb_l1_test);
+ num1 = num1 + 10 ;
+ printk(KERN_ALERT "L1(after change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
+ return ;
+}
+#if L2_LENGTH
+
+static int num2 __attribute__((l2));
+void kgdb_l2_test(void) __attribute__((l2));
+
+void kgdb_l2_test(void)
+{
+ printk(KERN_ALERT "L2(before change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
+ printk(KERN_ALERT "L2 : code function addr = 0x%p\n", kgdb_l2_test);
+ num2 = num2 + 20 ;
+ printk(KERN_ALERT "L2(after change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
+ return ;
+}
+
+#endif
+
+
+int kgdb_test(char *name, int len, int count, int z)
+{
+ printk(KERN_DEBUG "kgdb name(%d): %s, %d, %d\n", len, name, count, z);
+ count = z;
+ return count;
+}
+
+static int test_proc_output(char *buf)
+{
+ kgdb_test("hello world!", 12, 0x55, 0x10);
+ kgdb_l1_test();
+ #if L2_LENGTH
+ kgdb_l2_test();
+ #endif
+
+ return 0;
+}
+
+static int test_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ int len;
+
+ len = test_proc_output(page);
+ if (len <= off+count)
+ *eof = 1;
+ *start = page + off;
+ len -= off;
+ if (len > count)
+ len = count;
+ if (len < 0)
+ len = 0;
+ return len;
+}
+
+static int test_write_proc(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ if (count >= 256)
+ len = 255;
+ else
+ len = count;
+
+ memcpy(cmdline, buffer, count);
+ cmdline[len] = 0;
+
+ return len;
+}
+
+static int __init kgdbtest_init(void)
+{
+ struct proc_dir_entry *entry;
+
+ entry = create_proc_entry("kgdbtest", 0, NULL);
+ if (entry == NULL)
+ return -ENOMEM;
+
+ entry->read_proc = test_read_proc;
+ entry->write_proc = test_write_proc;
+ entry->data = NULL;
+
+ return 0;
+}
+
+static void __exit kgdbtest_exit(void)
+{
+ remove_proc_entry("kgdbtest", NULL);
+}
+
+module_init(kgdbtest_init);
+module_exit(kgdbtest_exit);
+MODULE_LICENSE("GPL");