arch/arm-native/kernel/tls.h

   1 #ifndef ASM_TLS_H
   2 #define ASM_TLS_H
   3
   4 typedef struct tls
   5 {
   6     struct ExecBase     *SysBase;
   7     void *              *KernelBase;    /* Base of kernel.resource */
   8     struct Task         *ThisTask;      /* Currently running task on this core */
   9     ULONG               ScheduleFlags;
  10     BYTE                IDNestCnt;
  11     BYTE                TDNestCnt;
  12 } tls_t;
  13
  14 #define TLSSF_Quantum   (1 << 0)
  15 #define TLSSF_Switch    (1 << 1)
  16 #define TLSSF_Dispatch  (1 << 2)
  17
  18 #define TLS_OFFSET(name) ((char *)&(((tls_t *)0)->name)-(char *)0)
  19
  20 ////
  21
  22 #define TLS_PTR_GET() \
  23     ({ \
  24         tls_t *__tls; \
  25         asm volatile("mrc p15, 0, %0, c13, c0, 3":"=r"(__tls)); \
  26         __tls;  \
  27     })
  28
  29 #define TLS_GET(name) \
  30     ({ \
  31         tls_t *__tls; \
  32         asm volatile("mrc p15, 0, %0, c13, c0, 3":"=r"(__tls)); \
  33         typeof(__tls -> name) __ret = (__tls -> name); \
  34         __ret;  \
  35     })
  36
  37 #define TLS_SET(name, val) \
  38     do { \
  39         tls_t *__tls; \
  40         asm volatile("mrc p15, 0, %0, c13, c0, 3":"=r"(__tls)); \
  41         (__tls -> name) = val; \
  42     } while(0);
  43
  44 #endif