LXR qemu/include/exec/helper-head.h

   1/* Helper file for declaring TCG helper functions.
   2   Used by other helper files.
   3
   4   Targets should use DEF_HELPER_N and DEF_HELPER_FLAGS_N to declare helper
   5   functions.  Names should be specified without the helper_ prefix, and
   6   the return and argument types specified.  3 basic types are understood
   7   (i32, i64 and ptr).  Additional aliases are provided for convenience and
   8   to match the types used by the C helper implementation.
   9
  10   The target helper.h should be included in all files that use/define
  11   helper functions.  THis will ensure that function prototypes are
  12   consistent.  In addition it should be included an extra two times for
  13   helper.c, defining:
  14    GEN_HELPER 1 to produce op generation functions (gen_helper_*)
  15    GEN_HELPER 2 to do runtime registration helper functions.
  16 */
  17
  18#ifndef EXEC_HELPER_HEAD_H
  19#define EXEC_HELPER_HEAD_H
  20
  21#define HELPER(name) glue(helper_, name)
  22
  23/* Some types that make sense in C, but not for TCG.  */
  24#define dh_alias_i32 i32
  25#define dh_alias_s32 i32
  26#define dh_alias_int i32
  27#define dh_alias_i64 i64
  28#define dh_alias_s64 i64
  29#define dh_alias_f16 i32
  30#define dh_alias_f32 i32
  31#define dh_alias_f64 i64
  32#define dh_alias_ptr ptr
  33#define dh_alias_cptr ptr
  34#define dh_alias_void void
  35#define dh_alias_noreturn noreturn
  36#define dh_alias(t) glue(dh_alias_, t)
  37
  38#define dh_ctype_i32 uint32_t
  39#define dh_ctype_s32 int32_t
  40#define dh_ctype_int int
  41#define dh_ctype_i64 uint64_t
  42#define dh_ctype_s64 int64_t
  43#define dh_ctype_f16 uint32_t
  44#define dh_ctype_f32 float32
  45#define dh_ctype_f64 float64
  46#define dh_ctype_ptr void *
  47#define dh_ctype_cptr const void *
  48#define dh_ctype_void void
  49#define dh_ctype_noreturn void QEMU_NORETURN
  50#define dh_ctype(t) dh_ctype_##t
  51
  52#ifdef NEED_CPU_H
  53# ifdef TARGET_LONG_BITS
  54#  if TARGET_LONG_BITS == 32
  55#   define dh_alias_tl i32
  56#  else
  57#   define dh_alias_tl i64
  58#  endif
  59# endif
  60# define dh_alias_env ptr
  61# define dh_ctype_tl target_ulong
  62# define dh_ctype_env CPUArchState *
  63#endif
  64
  65/* We can't use glue() here because it falls foul of C preprocessor
  66   recursive expansion rules.  */
  67#define dh_retvar_decl0_void void
  68#define dh_retvar_decl0_noreturn void
  69#define dh_retvar_decl0_i32 TCGv_i32 retval
  70#define dh_retvar_decl0_i64 TCGv_i64 retval
  71#define dh_retvar_decl0_ptr TCGv_ptr retval
  72#define dh_retvar_decl0(t) glue(dh_retvar_decl0_, dh_alias(t))
  73
  74#define dh_retvar_decl_void
  75#define dh_retvar_decl_noreturn
  76#define dh_retvar_decl_i32 TCGv_i32 retval,
  77#define dh_retvar_decl_i64 TCGv_i64 retval,
  78#define dh_retvar_decl_ptr TCGv_ptr retval,
  79#define dh_retvar_decl(t) glue(dh_retvar_decl_, dh_alias(t))
  80
  81#define dh_retvar_void NULL
  82#define dh_retvar_noreturn NULL
  83#define dh_retvar_i32 tcgv_i32_temp(retval)
  84#define dh_retvar_i64 tcgv_i64_temp(retval)
  85#define dh_retvar_ptr tcgv_ptr_temp(retval)
  86#define dh_retvar(t) glue(dh_retvar_, dh_alias(t))
  87
  88#define dh_typecode_void 0
  89#define dh_typecode_noreturn 0
  90#define dh_typecode_i32 2
  91#define dh_typecode_s32 3
  92#define dh_typecode_i64 4
  93#define dh_typecode_s64 5
  94#define dh_typecode_ptr 6
  95#define dh_typecode(t) glue(dh_typecode_, dh_alias(t))
  96
  97#define dh_callflag_i32  0
  98#define dh_callflag_s32  0
  99#define dh_callflag_int  0
 100#define dh_callflag_i64  0
 101#define dh_callflag_s64  0
 102#define dh_callflag_f16  0
 103#define dh_callflag_f32  0
 104#define dh_callflag_f64  0
 105#define dh_callflag_ptr  0
 106#define dh_callflag_cptr dh_callflag_ptr
 107#define dh_callflag_void 0
 108#define dh_callflag_noreturn TCG_CALL_NO_RETURN
 109#define dh_callflag(t) glue(dh_callflag_, dh_alias(t))
 110
 111#define dh_typemask(t, n)  (dh_typecode(t) << (n * 3))
 112
 113#define dh_arg(t, n) \
 114  glue(glue(tcgv_, dh_alias(t)), _temp)(glue(arg, n))
 115
 116#define dh_arg_decl(t, n) glue(TCGv_, dh_alias(t)) glue(arg, n)
 117
 118#define DEF_HELPER_0(name, ret) \
 119    DEF_HELPER_FLAGS_0(name, 0, ret)
 120#define DEF_HELPER_1(name, ret, t1) \
 121    DEF_HELPER_FLAGS_1(name, 0, ret, t1)
 122#define DEF_HELPER_2(name, ret, t1, t2) \
 123    DEF_HELPER_FLAGS_2(name, 0, ret, t1, t2)
 124#define DEF_HELPER_3(name, ret, t1, t2, t3) \
 125    DEF_HELPER_FLAGS_3(name, 0, ret, t1, t2, t3)
 126#define DEF_HELPER_4(name, ret, t1, t2, t3, t4) \
 127    DEF_HELPER_FLAGS_4(name, 0, ret, t1, t2, t3, t4)
 128#define DEF_HELPER_5(name, ret, t1, t2, t3, t4, t5) \
 129    DEF_HELPER_FLAGS_5(name, 0, ret, t1, t2, t3, t4, t5)
 130#define DEF_HELPER_6(name, ret, t1, t2, t3, t4, t5, t6) \
 131    DEF_HELPER_FLAGS_6(name, 0, ret, t1, t2, t3, t4, t5, t6)
 132#define DEF_HELPER_7(name, ret, t1, t2, t3, t4, t5, t6, t7) \
 133    DEF_HELPER_FLAGS_7(name, 0, ret, t1, t2, t3, t4, t5, t6, t7)
 134
 135/* MAX_OPC_PARAM_IARGS must be set to n if last entry is DEF_HELPER_FLAGS_n. */
 136
 137#endif /* EXEC_HELPER_HEAD_H */
 138