Module x86::shared::segmentation
[−]
[src]
Structs
| CodeAccess |
Code segment types. All are executable. |
| DataAccess |
Data segment types. All are readable. |
| Flags | |
| SegmentDescriptor |
Entry for GDT or LDT. Provides size and location of a segment. |
| SegmentSelector |
Enums
| Type |
Umbrella Segment Type. |
Constants
| CODE_CONFORMING |
Segment is callable from segment with fewer privileges. |
| CODE_READ |
Segment is readable |
| DATA_EXPAND_DOWN |
Segment grows down, for stack |
| DATA_WRITE |
Segment is writable |
| FLAGS_AVL |
Available for use by system software. |
| FLAGS_DB |
Default operation size (0 = 16-bit segment, 1 = 32-bit segment). |
| FLAGS_G |
Granularity (0 = limit in bytes, 1 = limt in 4 KiB Pages). |
| FLAGS_L |
64-bit code segment (IA-32e mode only). |
| RPL_0 |
Requestor Privilege Level |
| RPL_1 | |
| RPL_2 | |
| RPL_3 | |
| TI_GDT |
Table Indicator (TI) 0 means GDT is used. |
| TI_LDT |
Table Indicator (TI) 1 means LDT is used. |
Functions
| cs |
Returns the current value of the code segment register. |
| load_ds |
Reload data segment register. |
| load_es |
Reload es segment register. |
| load_fs |
Reload fs segment register. |
| load_gs |
Reload gs segment register. |
| load_ss |
Reload stack segment register. |
| set_cs |
Reload code segment register. Note this is special since we can not directly move to %cs. Instead we push the new segment selector and return value on the stack and use lretq to reload cs and continue at 1:. |