OS-3851 ctfdump should be written in terms of libctf

OS-3852 ctfdiff could be more useful
OS-3853 ctfmerge and ctfconvert could have an altexec
OS-3854 ctfmerge should be implemented in terms of libctf
Reviewed by: Keith M Wesolowski <wesolows@foobazco.org>

1 files changed, 41 insertions, 2 deletions

diff --git a/usr/src/common/ctf/ctf_util.c b/usr/src/common/ctf/ctf_util.c
index 740d403e8c..550195b5e1 100644
--- a/usr/src/common/ctf/ctf_util.c
+++ b/usr/src/common/ctf/ctf_util.c
@@ -23,10 +23,12 @@
  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
-
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
+/*
+ * Copyright (c) 2015, Joyent, Inc.
+ */
 
 #include <ctf_impl.h>
+#include <sys/debug.h>
 
 /*
  * Simple doubly-linked list append routine.  This implementation assumes that
@@ -71,6 +73,24 @@ ctf_list_prepend(ctf_list_t *lp, void *new)
 		lp->l_prev = p;
 }
 
+void
+ctf_list_insert_before(ctf_list_t *head, void *item, void *nitem)
+{
+	ctf_list_t *lp = item;
+	ctf_list_t *new = nitem;
+	ctf_list_t *prev = lp->l_prev;
+
+	lp->l_prev = new;
+	new->l_next = lp;
+	new->l_prev = prev;
+	if (prev != NULL) {
+		prev->l_next = new;
+	} else {
+		ASSERT(head->l_next == lp);
+		head->l_next = new;
+	}
+}
+
 /*
  * Delete the specified existing element from the given ctf_list_t.  The
  * existing pointer should be pointing at a struct with embedded ctf_list_t.
@@ -150,3 +170,22 @@ ctf_set_errno(ctf_file_t *fp, int err)
 	fp->ctf_errno = err;
 	return (CTF_ERR);
 }
+
+boolean_t
+ctf_sym_valid(uintptr_t strbase, int type, uint16_t shndx, uint64_t val,
+    uint32_t noff)
+{
+	const char *name;
+
+	if (type != STT_OBJECT && type != STT_FUNC)
+		return (B_FALSE);
+	if (shndx == SHN_UNDEF || noff == 0)
+		return (B_FALSE);
+	if (type == STT_OBJECT && shndx == SHN_ABS && val == 0)
+		return (B_FALSE);
+	name = (char *)(strbase + noff);
+	if (strcmp(name, "_START_") == 0 || strcmp(name, "_END_") == 0)
+		return (B_FALSE);
+
+	return (B_TRUE);
+}