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| author |  Gerd Zellweger <mail@gerdzellweger.com>
| 2019-01-08 01:44:45 -0800 |
|---|---|---|
| committer |  GitHub <noreply@github.com>
| 2019-01-08 01:44:45 -0800 |
| commit | 187a1edd5cc464e9702f65810a1f53ca72cde296 (patch) | |
| tree | f097d2fa4a02396547233fa0c8087b89940514d6 /src | |
| parent | a0ebbd3cc50d2a7e41b91ddb1cfaf7b9850ad8c7 (diff) | |
| parent | 88099ed80ebdf89115f649105a1aee3a2c716a50 (diff) | |
| download | rust-x86-187a1edd5cc464e9702f65810a1f53ca72cde296.tar.gz rust-x86-187a1edd5cc464e9702f65810a1f53ca72cde296.tar.zst rust-x86-187a1edd5cc464e9702f65810a1f53ca72cde296.zip | |
Merge pull request #44 from hermitcore/cr2_write
add cr2_write, for example to reset CR2
Diffstat (limited to 'src')
| -rw-r--r-- | src/controlregs.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/controlregs.rs b/src/controlregs.rs index b09a48a..1445eab 100644 --- a/src/controlregs.rs +++ b/src/controlregs.rs @@ -77,6 +77,11 @@ pub unsafe fn cr2() -> usize { ret } +/// Write cr2, for instance to reset cr2 +pub unsafe fn cr2_write(val: u64) { + asm!("mov $0, %cr2" :: "r" (val) : "memory"); +} + /// Contains page-table root pointer. pub unsafe fn cr3() -> u64 { let ret: u64; |