kernel/arch/ia64/include/uapi/asm/intrinsics.h

   1 /*
   2  * Compiler-dependent intrinsics.
   3  *
   4  * Copyright (C) 2002-2003 Hewlett-Packard Co
   5  *      David Mosberger-Tang <davidm@hpl.hp.com>
   6  */
   7 #ifndef _UAPI_ASM_IA64_INTRINSICS_H
   8 #define _UAPI_ASM_IA64_INTRINSICS_H
   9
  10
  11 #ifndef __ASSEMBLY__
  12
  13 #include <linux/types.h>
  14 /* include compiler specific intrinsics */
  15 #include <asm/ia64regs.h>
  16 #ifdef __INTEL_COMPILER
  17 # include <asm/intel_intrin.h>
  18 #else
  19 # include <asm/gcc_intrin.h>
  20 #endif
  21 #include <asm/cmpxchg.h>
  22
  23 #define ia64_native_get_psr_i() (ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I)
  24
  25 #define ia64_native_set_rr0_to_rr4(val0, val1, val2, val3, val4)        \
  26 do {                                                                    \
  27         ia64_native_set_rr(0x0000000000000000UL, (val0));               \
  28         ia64_native_set_rr(0x2000000000000000UL, (val1));               \
  29         ia64_native_set_rr(0x4000000000000000UL, (val2));               \
  30         ia64_native_set_rr(0x6000000000000000UL, (val3));               \
  31         ia64_native_set_rr(0x8000000000000000UL, (val4));               \
  32 } while (0)
  33
  34 /*
  35  * Force an unresolved reference if someone tries to use
  36  * ia64_fetch_and_add() with a bad value.
  37  */
  38 extern unsigned long __bad_size_for_ia64_fetch_and_add (void);
  39 extern unsigned long __bad_increment_for_ia64_fetch_and_add (void);
  40
  41 #define IA64_FETCHADD(tmp,v,n,sz,sem)                                           \
  42 ({                                                                              \
  43         switch (sz) {                                                           \
  44               case 4:                                                           \
  45                 tmp = ia64_fetchadd4_##sem((unsigned int *) v, n);              \
  46                 break;                                                          \
  47                                                                                 \
  48               case 8:                                                           \
  49                 tmp = ia64_fetchadd8_##sem((unsigned long *) v, n);             \
  50                 break;                                                          \
  51                                                                                 \
  52               default:                                                          \
  53                 __bad_size_for_ia64_fetch_and_add();                            \
  54         }                                                                       \
  55 })
  56
  57 #define ia64_fetchadd(i,v,sem)                                                          \
  58 ({                                                                                      \
  59         __u64 _tmp;                                                                     \
  60         volatile __typeof__(*(v)) *_v = (v);                                            \
  61         /* Can't use a switch () here: gcc isn't always smart enough for that... */     \
  62         if ((i) == -16)                                                                 \
  63                 IA64_FETCHADD(_tmp, _v, -16, sizeof(*(v)), sem);                        \
  64         else if ((i) == -8)                                                             \
  65                 IA64_FETCHADD(_tmp, _v, -8, sizeof(*(v)), sem);                         \
  66         else if ((i) == -4)                                                             \
  67                 IA64_FETCHADD(_tmp, _v, -4, sizeof(*(v)), sem);                         \
  68         else if ((i) == -1)                                                             \
  69                 IA64_FETCHADD(_tmp, _v, -1, sizeof(*(v)), sem);                         \
  70         else if ((i) == 1)                                                              \
  71                 IA64_FETCHADD(_tmp, _v, 1, sizeof(*(v)), sem);                          \
  72         else if ((i) == 4)                                                              \
  73                 IA64_FETCHADD(_tmp, _v, 4, sizeof(*(v)), sem);                          \
  74         else if ((i) == 8)                                                              \
  75                 IA64_FETCHADD(_tmp, _v, 8, sizeof(*(v)), sem);                          \
  76         else if ((i) == 16)                                                             \
  77                 IA64_FETCHADD(_tmp, _v, 16, sizeof(*(v)), sem);                         \
  78         else                                                                            \
  79                 _tmp = __bad_increment_for_ia64_fetch_and_add();                        \
  80         (__typeof__(*(v))) (_tmp);      /* return old value */                          \
  81 })
  82
  83 #define ia64_fetch_and_add(i,v) (ia64_fetchadd(i, v, rel) + (i)) /* return new value */
  84
  85 #endif
  86
  87
  88 #ifndef __ASSEMBLY__
  89
  90 #define IA64_INTRINSIC_API(name)        ia64_native_ ## name
  91 #define IA64_INTRINSIC_MACRO(name)      ia64_native_ ## name
  92
  93
  94 /************************************************/
  95 /* Instructions paravirtualized for correctness */
  96 /************************************************/
  97 /* fc, thash, get_cpuid, get_pmd, get_eflags, set_eflags */
  98 /* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
  99  * is not currently used (though it may be in a long-format VHPT system!)
 100  */
 101 #define ia64_fc                         IA64_INTRINSIC_API(fc)
 102 #define ia64_thash                      IA64_INTRINSIC_API(thash)
 103 #define ia64_get_cpuid                  IA64_INTRINSIC_API(get_cpuid)
 104 #define ia64_get_pmd                    IA64_INTRINSIC_API(get_pmd)
 105
 106
 107 /************************************************/
 108 /* Instructions paravirtualized for performance */
 109 /************************************************/
 110 #define ia64_ssm                        IA64_INTRINSIC_MACRO(ssm)
 111 #define ia64_rsm                        IA64_INTRINSIC_MACRO(rsm)
 112 #define ia64_getreg                     IA64_INTRINSIC_MACRO(getreg)
 113 #define ia64_setreg                     IA64_INTRINSIC_API(setreg)
 114 #define ia64_set_rr                     IA64_INTRINSIC_API(set_rr)
 115 #define ia64_get_rr                     IA64_INTRINSIC_API(get_rr)
 116 #define ia64_ptcga                      IA64_INTRINSIC_API(ptcga)
 117 #define ia64_get_psr_i                  IA64_INTRINSIC_API(get_psr_i)
 118 #define ia64_intrin_local_irq_restore   \
 119         IA64_INTRINSIC_API(intrin_local_irq_restore)
 120 #define ia64_set_rr0_to_rr4             IA64_INTRINSIC_API(set_rr0_to_rr4)
 121
 122 #endif /* !__ASSEMBLY__ */
 123
 124 #endif /* _UAPI_ASM_IA64_INTRINSICS_H */