diff options
Diffstat (limited to 'gpxe/src/arch/i386/core/nap.c')
| -rw-r--r-- | gpxe/src/arch/i386/core/nap.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gpxe/src/arch/i386/core/nap.c b/gpxe/src/arch/i386/core/nap.c new file mode 100644 index 00000000..12bb5699 --- /dev/null +++ b/gpxe/src/arch/i386/core/nap.c @@ -0,0 +1,12 @@ + +#include <realmode.h> +#include <bios.h> + +/************************************************************************** + * Save power by halting the CPU until the next interrupt + **************************************************************************/ +void cpu_nap ( void ) { + __asm__ __volatile__ ( REAL_CODE ( "sti\n\t" + "hlt\n\t" + "cli\n\t" ) : : ); +} |