diff options
Diffstat (limited to 'pc-bios/s390-ccw/s390-arch.h')
| -rw-r--r-- | pc-bios/s390-ccw/s390-arch.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/s390-arch.h b/pc-bios/s390-ccw/s390-arch.h index 5e92c7a27d..504fc7c2f0 100644 --- a/pc-bios/s390-ccw/s390-arch.h +++ b/pc-bios/s390-ccw/s390-arch.h @@ -87,4 +87,17 @@ typedef struct LowCore { extern LowCore const *lowcore; +static inline void set_prefix(uint32_t address) +{ + asm volatile("spx %0" : : "m" (address) : "memory"); +} + +static inline uint32_t store_prefix(void) +{ + uint32_t address; + + asm volatile("stpx %0" : "=m" (address)); + return address; +} + #endif |