12208 dboot_printf(): support %u

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  
  /*
   * Copyright (c) 2012 Gary Mills
+  * Copyright 2020 Joyent, Inc.
   *
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
*** 91,101 ****
                  ++s;
          }
  }
  
  static void
! dboot_putnum(uint64_t x, uint_t is_signed, uint8_t base)
  {
          char buffer[64];        /* digits in reverse order */
          int i;
  
          if (is_signed && (int64_t)x < 0) {
--- 92,102 ----
                  ++s;
          }
  }
  
  static void
! dboot_putnum(uint64_t x, boolean_t is_signed, uint8_t base)
  {
          char buffer[64];        /* digits in reverse order */
          int i;
  
          if (is_signed && (int64_t)x < 0) {
*** 112,131 ****
          while (i >= 0)
                  bcons_putchar(buffer[i--]);
  }
  
  /*
!  * very primitive printf - only does %s, %d, %x, %lx, or %%
   */
  static void
  do_dboot_printf(char *fmt, va_list args)
  {
          char *s;
          uint64_t x;
          uint8_t base;
          uint8_t size;
-         uint_t is_signed = 1;
  
          if (fmt == NULL) {
                  dboot_puts("dboot_printf(): 1st arg is NULL\n");
                  return;
          }
--- 113,131 ----
          while (i >= 0)
                  bcons_putchar(buffer[i--]);
  }
  
  /*
!  * Very primitive printf - only does a subset of the standard format characters.
   */
  static void
  do_dboot_printf(char *fmt, va_list args)
  {
          char *s;
          uint64_t x;
          uint8_t base;
          uint8_t size;
  
          if (fmt == NULL) {
                  dboot_puts("dboot_printf(): 1st arg is NULL\n");
                  return;
          }
*** 157,167 ****
                                  dboot_puts(s);
                          break;
  
                  case 'p':
                          x = va_arg(args, ulong_t);
!                         dboot_putnum(x, !is_signed, 16);
                          break;
  
                  case 'l':
                          if (size == 0)
                                  size = sizeof (long);
--- 157,167 ----
                                  dboot_puts(s);
                          break;
  
                  case 'p':
                          x = va_arg(args, ulong_t);
!                         dboot_putnum(x, B_FALSE, 16);
                          break;
  
                  case 'l':
                          if (size == 0)
                                  size = sizeof (long);
*** 174,186 ****
                                  x = va_arg(args, int);
                          else if (size == sizeof (long))
                                  x = va_arg(args, long);
                          else
                                  x = va_arg(args, long long);
!                         dboot_putnum(x, is_signed, 10);
                          break;
  
                  case 'b':
                          base = 2;
                          goto unsigned_num;
  
                  case 'o':
--- 174,190 ----
                                  x = va_arg(args, int);
                          else if (size == sizeof (long))
                                  x = va_arg(args, long);
                          else
                                  x = va_arg(args, long long);
!                         dboot_putnum(x, B_TRUE, 10);
                          break;
  
+                 case 'u':
+                         base = 10;
+                         goto unsigned_num;
+ 
                  case 'b':
                          base = 2;
                          goto unsigned_num;
  
                  case 'o':
*** 190,204 ****
                  case 'x':
                          base = 16;
  unsigned_num:
                          if (size == 0)
                                  x = va_arg(args, uint_t);
!                         else if (size == sizeof (long))
                                  x = va_arg(args, ulong_t);
                          else
                                  x = va_arg(args, unsigned long long);
!                         dboot_putnum(x, !is_signed, base);
                          break;
  
                  default:
                          dboot_puts("dboot_printf(): unknown % escape\n");
                  }
--- 194,208 ----
                  case 'x':
                          base = 16;
  unsigned_num:
                          if (size == 0)
                                  x = va_arg(args, uint_t);
!                         else if (size == sizeof (ulong_t))
                                  x = va_arg(args, ulong_t);
                          else
                                  x = va_arg(args, unsigned long long);
!                         dboot_putnum(x, B_FALSE, base);
                          break;
  
                  default:
                          dboot_puts("dboot_printf(): unknown % escape\n");
                  }