Port kallsyms to Xen, as 'symbols'.

Signed-off-by: Keir Fraser <keir@xensource.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/xen/include/xen/symbols.h b/xen/include/xen/symbols.h
new file mode 100644
index 0000000000..a30b82c002
--- /dev/null
+++ b/xen/include/xen/symbols.h
@@ -0,0 +1,45 @@
+#ifndef _XEN_SYMBOLS_H
+#define _XEN_SYMBOLS_H
+
+#include <xen/config.h>
+#include <xen/types.h>
+
+#define KSYM_NAME_LEN 127
+
+extern int is_kernel_text(unsigned long addr);
+extern unsigned long kernel_text_end(void);
+
+/* Lookup an address. */
+const char *symbols_lookup(unsigned long addr,
+                           unsigned long *symbolsize,
+                           unsigned long *offset,
+                           char *namebuf);
+
+/* Replace "%s" in format with address, if found */
+extern void __print_symbol(const char *fmt, unsigned long address);
+
+/* This macro allows us to keep printk typechecking */
+static void __check_printsym_format(const char *fmt, ...)
+    __attribute__((format(printf,1,2)));
+    static inline void __check_printsym_format(const char *fmt, ...)
+{
+}
+
+/* ia64 and ppc64 use function descriptors, which contain the real address */
+#if defined(CONFIG_IA64) || defined(CONFIG_PPC64)
+#define print_fn_descriptor_symbol(fmt, addr)		\
+do {						\
+	unsigned long *__faddr = (unsigned long*) addr;		\
+	print_symbol(fmt, __faddr[0]);		\
+} while (0)
+#else
+#define print_fn_descriptor_symbol(fmt, addr) print_symbol(fmt, addr)
+#endif
+
+#define print_symbol(fmt, addr)			\
+do {						\
+	__check_printsym_format(fmt, "");	\
+	__print_symbol(fmt, addr);		\
+} while(0)
+
+#endif /*_XEN_SYMBOLS_H*/