perf annotate: Mark jump instructions with no offset

I.e. jumps that go to code outside the current function, that is denoted
in objdump -dS as:

   399f877a9f: jne    399f87bcf4 <_L_lock_5154>

I.e. without the + after the name of the current function, like in:

   399f877aa5: jmp    399f877ab2 <_int_free+0x412>

The browser will use that info to avoid drawing connectors to the start
of the function, since ops.target.addr was zero.

Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: acmel

tools/perf/util/annotate.c

@@ -75,10 +75,13 @@ static int jump__parse(struct ins_operands *ops)
 {
 	const char *s = strchr(ops->raw, '+');
 
-	if (s++ == NULL)
-		return -1;
+	ops->target.addr = strtoll(ops->raw, NULL, 16);
+
+	if (s++ != NULL)
+		ops->target.offset = strtoll(s, NULL, 16);
+	else
+		ops->target.offset = UINT64_MAX;
 
-	ops->target.offset = strtoll(s, NULL, 16);
 	return 0;
 }
 

tools/perf/util/annotate.h

@@ -2,6 +2,7 @@
 #define __PERF_ANNOTATE_H
 
 #include <stdbool.h>
+#include <stdint.h>
 #include "types.h"
 #include "symbol.h"
 #include <linux/list.h>
@@ -41,6 +42,11 @@ struct disasm_line {
 	struct ins_operands ops;
 };
 
+static inline bool disasm_line__has_offset(const struct disasm_line *dl)
+{
+	return dl->ops.target.offset != UINT64_MAX;
+}
+
 void disasm_line__free(struct disasm_line *dl);
 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos);
 size_t disasm__fprintf(struct list_head *head, FILE *fp);