arch_2x86_2include_2bits_2nap_8h_source.html

#ifndef _BITS_NAP_H

#define _BITS_NAP_H


/** @file

 *

 * x86-specific CPU sleeping API implementations

 *

 */


FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );

FILE_SECBOOT ( PERMITTED );


#include <ipxe/bios_nap.h>


/**

 * Sleep until next CPU interrupt

 *

 */


static inline __attribute__ (( always_inline )) void cpu_halt ( void ) {

        __asm__ __volatile__ ( "hlt" );

}


#endif /* _BITS_NAP_H */

__volatile__
__asm__ __volatile__("call *%9" :"=a"(result), "=c"(discard_ecx), "=d"(discard_edx) :"d"(0), "a"(code), "b"(0), "c"(in_phys), "D"(0), "S"(out_phys), "m"(hypercall))

bios_nap.h
BIOS CPU sleeping.

FILE_LICENCE
#define FILE_LICENCE(_licence)
Declare a particular licence as applying to a file.
Definition compiler.h:896

FILE_SECBOOT
#define FILE_SECBOOT(_status)
Declare a file's UEFI Secure Boot permission status.
Definition compiler.h:926

__attribute__
#define __attribute__(x)
Definition compiler.h:10

cpu_halt
void cpu_halt(void)
Sleep until next CPU interrupt.

__asm__
__asm__(".section \".rodata\", \"a\", " PROGBITS "\n\t" "\nprivate_key_data:\n\t" ".size private_key_data, ( . - private_key_data )\n\t" ".equ private_key_len, ( . - private_key_data )\n\t" ".previous\n\t")