libctf: dump header offsets into the debugging output

This is an essential first piece of info needed to debug both libctf
writing and reading problems, and we weren't recording it anywhere!

(This is a short-term fix: fairly soon, we will record all of this in a
form that outlives ctf_bufopen, and then ctf_dump() will be able to dump
it like it can everything else.)

libctf/
	* ctf-open.c (ctf_bufopen): Dump header offsets into the debugging
	output.

diff --git a/libctf/ChangeLog b/libctf/ChangeLog
index 9fd9e6617a51f0247fd327f2c954f360dd70af03..9ff7cd4146bb3e58e9592eeb00a129475710e78f 100644 (file)
--- a/libctf/ChangeLog
+++ b/libctf/ChangeLog
@@ -1,3 +1,8 @@
+2019-06-19  Nick Alcock <nick.alcock@oracle.com>
+
+       * ctf-open.c (ctf_bufopen): Dump header offsets into the debugging
+       output.
+
 2019-06-19  Nick Alcock <nick.alcock@oracle.com>
 
        * ctf-subr.c (_PAGESIZE): Remove.

diff --git a/libctf/ctf-open.c b/libctf/ctf-open.c
index b0d3ef6205577a7f19d345bf6e5b0222a0a7bacf..df735acb4085ce6bf14828b9bbcbf6ec50a9ce44 100644 (file)
--- a/libctf/ctf-open.c
+++ b/libctf/ctf-open.c
@@ -1275,6 +1275,9 @@ ctf_bufopen (const ctf_sect_t *ctfsect, const ctf_sect_t *symsect,
   if (foreign_endian)
     flip_header (&hp);
 
+  ctf_dprintf ("header offsets: %x/%x/%x/%x/%x/%x/%x\n",
+              hp.cth_lbloff, hp.cth_objtoff, hp.cth_funcoff, hp.cth_varoff,
+              hp.cth_typeoff, hp.cth_stroff, hp.cth_strlen);
   hdrsz = sizeof (ctf_header_t);
 
   size = hp.cth_stroff + hp.cth_strlen;