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| author | kmacy <kmacy@FreeBSD.org> | 2008-08-15 21:43:38 +0000 |
|---|---|---|
| committer | kmacy <kmacy@FreeBSD.org> | 2008-08-15 21:43:38 +0000 |
| commit | 5806e2df7f5dd8b4b67140d70425b878eb694556 (patch) | |
| tree | 24efa2a33f8fbe28e19b596fd3b6dfd42e5ccc06 | |
| parent | 7f5780e2e4f44512c072ec6976aeb76fbc5c731b (diff) | |
| download | FreeBSD-src-5806e2df7f5dd8b4b67140d70425b878eb694556.zip FreeBSD-src-5806e2df7f5dd8b4b67140d70425b878eb694556.tar.gz | |
Call in to xen for fpu handling when XEN is set
MFC after: 1 month
| -rw-r--r-- | sys/i386/isa/npx.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/i386/isa/npx.c b/sys/i386/isa/npx.c index c5d381e..6be3da9 100644 --- a/sys/i386/isa/npx.c +++ b/sys/i386/isa/npx.c @@ -68,6 +68,11 @@ __FBSDID("$FreeBSD$"); #include <machine/ucontext.h> #include <machine/intr_machdep.h> +#ifdef XEN +#include <machine/xen/xen-os.h> +#include <machine/xen/hypervisor.h> +#endif + #ifdef DEV_ISA #include <isa/isavar.h> #endif @@ -100,10 +105,14 @@ __FBSDID("$FreeBSD$"); #define fxsave(addr) __asm __volatile("fxsave %0" : "=m" (*(addr))) #define ldmxcsr(__csr) __asm __volatile("ldmxcsr %0" : : "m" (__csr)) #endif +#ifdef XEN +#define start_emulating() (HYPERVISOR_fpu_taskswitch(1)) +#define stop_emulating() (HYPERVISOR_fpu_taskswitch(0)) +#else #define start_emulating() __asm("smsw %%ax; orb %0,%%al; lmsw %%ax" \ : : "n" (CR0_TS) : "ax") #define stop_emulating() __asm("clts") - +#endif #else /* !(__GNUCLIKE_ASM && !lint) */ void fldcw(caddr_t addr); |
