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| author | Vincent Hanquez <vincent.hanquez@cl.cam.ac.uk> | 2005-06-23 11:08:46 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-23 20:45:14 +0400 |
| commit | e9129e56e9ec50c0689eb4cf7a3ca132f1e776db (patch) | |
| tree | 46ef37651b1d25afbe002e00d8c80c85df27d5fd /include/asm-x86_64 | |
| parent | 717b594a415bfaf2dbd5e8266636488f2564c689 (diff) | |
| download | linux-e9129e56e9ec50c0689eb4cf7a3ca132f1e776db.tar.xz | |
[PATCH] xen: x86_64: Add macro for debugreg
Add 2 macros to set and get debugreg on x86_64. This is useful for Xen
because it will need only to redefine each macro to a hypervisor call.
Signed-off-by: Vincent Hanquez <vincent.hanquez@cl.cam.ac.uk>
Cc: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64')
| -rw-r--r-- | include/asm-x86_64/processor.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/asm-x86_64/processor.h b/include/asm-x86_64/processor.h index 8b55f139968f..106f666517bb 100644 --- a/include/asm-x86_64/processor.h +++ b/include/asm-x86_64/processor.h @@ -280,6 +280,14 @@ struct thread_struct { set_fs(USER_DS); \ } while(0) +#define get_debugreg(var, register) \ + __asm__("movq %%db" #register ", %0" \ + :"=r" (var)) +#define set_debugreg(value, register) \ + __asm__("movq %0,%%db" #register \ + : /* no output */ \ + :"r" (value)) + struct task_struct; struct mm_struct; |