DG - Display Global Descriptor Table

Display entries from the Global Descriptor Table.

Syntax:

───┬─  DG   ──┬──┬─────────────────┬──────────────────────────
     └─  DGA  ──┘  └─ s ────┬──────┬─┘
                            └─ Ln ─┘

Parameters:

• Default)
  Display valid GDT entries only.
  A
  Display all GDT entries including invalid descriptors.
  s
  Display descriptor for selector number s.

  Notes

  Since bit 2 of the selector determines whether the descriptor is local or global the correct table entry will be displayed regardless of whether the DG or DL command. is used. If an LDT descriptor is specified then the following message is displayed:

  LDT
  

  The requestor priority level (RPL) bits (bits 0 and 1 of the selector) are ignored by DG. Thus: DG 8 displays the same information as DG 9, DG a and DG b.

  If the s parameter is omitted then the entire GDT is displayed.

  Ln
  The number of descriptor entries to display from and including selector s. The default is to display one descriptor entry.

  Results & Notes:

  One or more descriptor table entries are displayed. An example display follows:

  ────────────────────────────────────────────────────────────────────────##dga
  0000  Invalid Bas=00000000 Lim=00000000 DPL=0 NP
  0008  Invalid Bas=00000000 Lim=00000000 DPL=0 NP
  0010  TSS32   Bas=ffe05dfc Lim=00000067 DPL=0 P  B
  0018  Data    Bas=ffe00150 Lim=000003ff DPL=0 P  RW    A  UV
  0020  Data    Bas=ffe4a000 Lim=000003ff DPL=0 P  RW    A  UV
  0028  LDT     Bas=7ab27000 Lim=0000ffff DPL=0 P
  0030  Data    Bas=ffde08a4 Lim=0000575b DPL=0 P  RW ED A  UV
  003b  Data    Bas=7c38ba8c Lim=00000073 DPL=3 P  RW
  0040  Data    Bas=ffe49400 Lim=000003bf DPL=0 P  RW       UV
  004a  Data    Bas=00000000 Lim=1bffffff DPL=2 P  RW    A  G4k BIG UV
  0053  Data    Bas=00000000 Lim=1bffffff DPL=3 P  RW    A  G4k BIG UV
  005a  Code    Bas=00000000 Lim=1bffffff DPL=2 P  RE C  A  G4k C32 UV
  0063  Data    Bas=00000000 Lim=1fffffff DPL=3 P  RW       G4k BIG UV
  006b  Data    Bas=00000000 Lim=1bffffff DPL=3 P  RW    A  G4k BIG UV
  ────────────────────────────────────────────────────────────────────────
  

  For a detailed explanation of the descriptor table entry format see Descriptor Table Entry Format

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