uts: Allow for address space randomisation.
Randomise the base addresses of shared objects, non-fixed mappings, the
stack and the heap.  Introduce a service, svc:/system/process-security,
and a tool psecflags(1) to control and observe it

*** 434,443 ****
--- 434,444 ----
          union {
                  Conv_cap_val_hw1_buf_t          hw1;
                  Conv_cap_val_hw2_buf_t          hw2;
                  Conv_cnote_auxv_af_buf_t        auxv_af;
                  Conv_ehdr_flags_buf_t           ehdr_flags;
+                 Conv_secflags_buf_t             secflags;
                  Conv_inv_buf_t                  inv;
          } conv_buf;
          sl_fmtbuf_t     buf;
          int             ndx, ndx_start;
          Word            sizeof_auxv;
*** 485,494 ****
--- 486,500 ----
                  case AT_IGNORE:
                  case AT_SUN_IFLUSH:
                          num_fmt = SL_FMT_NUM_HEX;
                          break;
  
+                 case AT_SUN_SECFLAGS:
+                         w = extract_as_word(state, &layout->a_val);
+                         vstr = conv_psecflags(w, 0, &conv_buf.secflags);
+                         break;
+ 
                  case AT_EXECFD:
                  case AT_PHENT:
                  case AT_PHNUM:
                  case AT_PAGESZ:
                  case AT_SUN_UID:
*** 825,834 ****
--- 831,860 ----
              MSG_ORIG(MSG_CNOTE_T_TV_NSEC), tv_nsec);
  
          indent_exit(state);
  }
  
+ /*
+  * Output information from psecflags_t structure.
+  */
+ static void
+ dump_secflags(note_state_t *state, const char *title)
+ {
+         const sl_psecflags_layout_t *layout = state->ns_arch->psecflags;
+         Conv_secflags_buf_t inv;
+         Word w;
+ 
+         indent_enter(state, title, &layout->psf_effective);
+ 
+         w = extract_as_word(state, &layout->psf_effective);
+         print_str(state, MSG_ORIG(MSG_CNOTE_T_PSF_EFFECTIVE),
+             conv_psecflags(w, 0, &inv));
+ 
+         w = extract_as_word(state, &layout->psf_inherit);
+         print_str(state, MSG_ORIG(MSG_CNOTE_T_PSF_INHERIT),
+             conv_psecflags(w, 0, &inv));
+ }
  
  /*
   * Output information from utsname structure.
   */
  static void
*** 1095,1104 ****
--- 1121,1134 ----
           * higher one for the pr_lwp sub-struct.
           */
          state->ns_vcol += 5;
          state->ns_t2col += 5;
          state->ns_v2col += 5;
+ 
+         PRINT_SUBTYPE(MSG_ORIG(MSG_CNOTE_T_PR_SECFLAGS), pr_secflags,
+             dump_secflags);
+ 
          PRINT_SUBTYPE(MSG_ORIG(MSG_CNOTE_T_PR_LWP), pr_lwp, dump_lwpstatus);
          state->ns_vcol -= 5;
          state->ns_t2col -= 5;
          state->ns_v2col -= 5;