Module x86::controlregs

Functions to read and write control registers. See Intel Vol. 3a Section 2.5, especially Figure 2-7.

Structs

Cr0

Cr4

Xcr0

Functions

cr0^⚠

Read cr0

cr0_write^⚠

Write cr0.

cr2^⚠

Contains page-fault linear address.

cr2_write^⚠

Write cr2, for instance to reset cr2

cr3^⚠

Contains page-table root pointer.

cr3_write^⚠

Switch page-table PML4 pointer.

cr4^⚠

Contains various flags to control operations in protected mode.

cr4_write^⚠

Write cr4.

xcr0^⚠

Read Extended Control Register XCR0. Only supported if CR4_ENABLE_OS_XSAVE is set.

xcr0_write^⚠

Write to Extended Control Register XCR0. Only supported if CR4_ENABLE_OS_XSAVE is set.