5231 ::printf doesn't handle enums
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Alex Reece <alex@delphix.com>

*** 24,33 ****
--- 24,34 ----
   */
  
  /*
   * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
   * Copyright (c) 2012 Joyent, Inc. All rights reserved.
+  * Copyright (c) 2014 Nexenta Systems, Inc. All rights reserved.
   */
  
  #include <mdb/mdb_modapi.h>
  #include <mdb/mdb_target.h>
  #include <mdb/mdb_argvec.h>
*** 2558,2576 ****
          if (mdb_ctf_type_resolve(id, &base) == -1) {
                  mdb_warn("could not resolve type");
                  return (DCMD_ABORT);
          }
  
!         if (mdb_ctf_type_kind(base) != CTF_K_INTEGER) {
!                 mdb_warn("expected integer type\n");
!                 return (DCMD_ABORT);
!         }
! 
          if (mdb_ctf_type_encoding(base, &e) != 0) {
                  mdb_warn("could not get type encoding");
                  return (DCMD_ABORT);
          }
  
          if (sign)
                  sign = e.cte_format & CTF_INT_SIGNED;
  
          size = e.cte_bits / NBBY;
--- 2559,2584 ----
          if (mdb_ctf_type_resolve(id, &base) == -1) {
                  mdb_warn("could not resolve type");
                  return (DCMD_ABORT);
          }
  
!         switch (mdb_ctf_type_kind(base)) {
!                 case CTF_K_ENUM:
!                         e.cte_format = CTF_INT_SIGNED;
!                         e.cte_offset = 0;
!                         e.cte_bits = mdb_ctf_type_size(id) * NBBY;
!                         break;
!                 case CTF_K_INTEGER:
                          if (mdb_ctf_type_encoding(base, &e) != 0) {
                                  mdb_warn("could not get type encoding");
                                  return (DCMD_ABORT);
                          }
+                         break;
+                 default:
+                         mdb_warn("expected integer type\n");
+                         return (DCMD_ABORT);
+         }
  
          if (sign)
                  sign = e.cte_format & CTF_INT_SIGNED;
  
          size = e.cte_bits / NBBY;
*** 2751,2760 ****
--- 2759,2787 ----
  
                  mdb_printf(fmt, buf);
                  return (0);
          }
  
+         if (mdb_ctf_type_kind(base) == CTF_K_ENUM) {
+                 const char *strval;
+                 int value;
+ 
+                 if (mdb_vread(&value, sizeof (value), addr) == -1) {
+                         mdb_warn("failed to read pointer at %llx", addr);
+                         return (DCMD_ERR);
+                 }
+ 
+                 if ((strval = mdb_ctf_enum_name(id, value))) {
+                         mdb_printf(fmt, strval);
+                 } else {
+                         (void) mdb_snprintf(buf, sizeof (buf), "<%d>", value);
+                         mdb_printf(fmt, buf);
+                 }
+ 
+                 return (0);
+         }
+ 
          if (mdb_ctf_type_kind(base) != CTF_K_ARRAY) {
                  mdb_warn("exepected pointer or array type\n");
                  return (DCMD_ABORT);
          }