1 files changed, 68 insertions, 0 deletions
diff --git a/src/cmd/addr2line/main.c b/src/cmd/addr2line/main.c
new file mode 100644
index 000000000..6b2fe5dfe
--- /dev/null
+++ b/src/cmd/addr2line/main.c
@@ -0,0 +1,68 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+ * addr2line simulation - only enough to make pprof work on Macs
+ */
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <mach.h>
+
+void
+usage(void)
+{
+	fprint(2, "usage: addr2line binary\n");
+	fprint(2, "reads addresses from standard input and writes two lines for each:\n");
+	fprint(2, "\tfunction name\n");
+	fprint(2, "\tfile:line\n");
+	exits("usage");
+}
+
+void
+main(int argc, char **argv)
+{
+	int fd;
+	char *p;
+	uvlong pc;
+	Symbol s;
+	Fhdr fhdr;
+	Biobuf bin, bout;
+	char file[1024];
+
+	ARGBEGIN{
+	default:
+		usage();
+	}ARGEND
+
+	if(argc != 1)
+		usage();
+
+	fd = open(argv[0], OREAD);
+	if(fd < 0)
+		sysfatal("open %s: %r", argv[0]);
+	if(crackhdr(fd, &fhdr) <= 0)
+		sysfatal("crackhdr: %r");
+	machbytype(fhdr.type);
+	if(syminit(fd, &fhdr) <= 0)
+		sysfatal("syminit: %r");
+
+	Binit(&bin, 0, OREAD);
+	Binit(&bout, 1, OWRITE);
+	for(;;) {
+		p = Brdline(&bin, '\n');
+		if(p == nil)
+			break;
+		p[Blinelen(&bin)-1] = '\0';
+		pc = strtoull(p, 0, 16);
+		if(!findsym(pc, CTEXT, &s))
+			s.name = "??";
+		if(!fileline(file, sizeof file, pc))
+			strcpy(file, "??:0");
+		Bprint(&bout, "%s\n%s\n", s.name, file);
+	}
+	Bflush(&bout);
+	exits(0);
+}