arch/all-pc/kernel/x86_syscalls.h

   1 #ifndef X86_SYSCALLS_H
   2 #define X86_SYSCALLS_H
   3
   4 /*
   5  * These are x86 specific/private SysCalls that
   6  * the kernel modules may provide/support
   7  */
   8
   9 #define SC_X86CHANGEPMSTATE     0xFF
  10 #define SC_X86CPUWAKE           0xFE
  11 #define SC_X86CPUSPINLOCK       0xFD
  12 #define SC_X86SWITCH            0xFC
  13 #define SC_X86RESCHEDTASK       0xFB
  14
  15 #define krnSysCallSwitch()                                                                              \
  16 ({                                                                                                      \
  17     __asm__ __volatile__ ("int $0xfe"::"a"(SC_X86SWITCH):"memory");                                     \
  18 })
  19
  20 #define krnSysCallReschedTask(task, state)                                                                      \
  21 ({                                                                                                      \
  22     __asm__ __volatile__ ("int $0xfe"::"a"(SC_X86RESCHEDTASK),"b"(task),"c"(state):"memory");                       \
  23 })
  24
  25 #define krnSysCallSpinLock(spindata)                                                                    \
  26 ({                                                                                                      \
  27     spinlock_t *__value;                                                                                \
  28     __asm__ __volatile__ ("int $0xfe":"=a"(__value):"a"(SC_X86CPUSPINLOCK),"b"(spindata):"memory");     \
  29     __value;                                                                                            \
  30 })
  31
  32 #define krnSysCallCPUWake(wakedata)                                                                     \
  33 ({                                                                                                      \
  34     int __value;                                                                                        \
  35     __asm__ __volatile__ ("int $0xfe":"=a"(__value):"a"(SC_X86CPUWAKE),"b"(wakedata):"memory");         \
  36     __value;                                                                                            \
  37 })
  38
  39 #define krnSysCallChangePMState(state)                                                                  \
  40 ({                                                                                                      \
  41     int __value;                                                                                        \
  42     __asm__ __volatile__ ("int $0xfe":"=a"(__value):"a"(SC_X86CHANGEPMSTATE),"b"(state):"memory");      \
  43     __value;                                                                                            \
  44 })
  45
  46 #endif /* !X86_SYSCALLS_H */