31 23 15 7 0
+----------|----------+----------|----------+
0x64 | I/O map base | 00000000 0000000T |
+----------|----------+----------|----------+
0x60 | 00000000 00000000 | LDT |
+----------|----------+----------|----------+
0x5c | 00000000 00000000 | GS |
+----------|----------+----------|----------+
0x58 | 00000000 00000000 | FS |
+----------|----------+----------|----------+
0x54 | 00000000 00000000 | DS |
+----------|----------+----------|----------+
0x50 | 00000000 00000000 | SS |
+----------|----------+----------|----------+
0x4C | 00000000 00000000 | CS |
+----------|----------+----------|----------+
0x48 | 00000000 00000000 | ES |
+----------|----------+----------|----------+
0x44 | EDI |
+----------|----------+----------|----------+
0x40 | ESI |
+----------|----------+----------|----------+
0x3C | EBP |
+----------|----------+----------|----------+
0x38 | ESP |
+----------|----------+----------|----------+
0x34 | EBX |
+----------|----------+----------|----------+
0x30 | EDX |
+----------|----------+----------|----------+
0x2C | ECX |
+----------|----------+----------|----------+
0x28 | EAX |
+----------|----------+----------|----------+
0x24 | EFLAGS |
+----------|----------+----------|----------+
0x20 | EIP |
+----------|----------+----------|----------+
0x1C | CR3 |
+----------|----------+----------|----------+
0x18 | 00000000 00000000 | SS2 |
+----------|----------+----------|----------+
0x14 | ESP2 |
+----------|----------+----------|----------+
0x10 | 00000000 00000000 | SS1 |
+----------|----------+----------|----------+
0x0C | ESP1 |
+----------|----------+----------|----------+
0x08 | 00000000 00000000 | SS0 |
+----------|----------+----------|----------+
0x04 | ESP0 |
+----------|----------+----------|----------+
0x00 | 00000000 00000000 | old TSS selector |
+----------|----------+----------|----------+31 23 15 7 0 +----------------|----------------+-----------------|-----------------+ | (NOT USED) | P DPL 0 0 1 0 1 (NOT USED) | +----------------|----------------+-----------------|-----------------+ | SELECTOR | (NOT USED) | +----------------|----------------+-----------------|-----------------+
31 23 15 7 0 +----------------|----------------+-----------------|-----------------+ | OFFSET 31..16 | P DPL 0 1 1 1 0 0 0 0 0 0 0 0 0 | +----------------|----------------+-----------------|-----------------+ | SELECTOR | OFFSET 15..0 | +--------------- |----------------+-----------------|-----------------+
31 23 15 7 0 +----------------|----------------+-----------------|-----------------+ | OFFSET 31..16 | P DPL 0 1 1 1 1 0 0 0 0 0 0 0 0 | +----------------|----------------+-----------------|-----------------+ | SELECTOR | OFFSET 15..0 | +--------------- |----------------+-----------------|-----------------+
struc IDTGate