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helper-head.h
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helper-head.h
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/* Helper file for declaring TCG helper functions.
Used by other helper files.
Targets should use DEF_HELPER_N and DEF_HELPER_FLAGS_N to declare helper
functions. Names should be specified without the helper_ prefix, and
the return and argument types specified. 3 basic types are understood
(i32, i64 and ptr). Additional aliases are provided for convenience and
to match the types used by the C helper implementation.
The target helper.h should be included in all files that use/define
helper functions. THis will ensure that function prototypes are
consistent. In addition it should be included an extra two times for
helper.c, defining:
GEN_HELPER 1 to produce op generation functions (gen_helper_*)
GEN_HELPER 2 to do runtime registration helper functions.
*/
#ifndef EXEC_HELPER_HEAD_H
#define EXEC_HELPER_HEAD_H
#define HELPER(name) glue(helper_, name)
/* Some types that make sense in C, but not for TCG. */
#define dh_alias_i32 i32
#define dh_alias_s32 i32
#define dh_alias_int i32
#define dh_alias_i64 i64
#define dh_alias_s64 i64
#define dh_alias_f16 i32
#define dh_alias_f32 i32
#define dh_alias_f64 i64
#define dh_alias_ptr ptr
#define dh_alias_cptr ptr
#define dh_alias_void void
#define dh_alias_noreturn noreturn
#define dh_alias(t) glue(dh_alias_, t)
#define dh_ctype_i32 uint32_t
#define dh_ctype_s32 int32_t
#define dh_ctype_int int
#define dh_ctype_i64 uint64_t
#define dh_ctype_s64 int64_t
#define dh_ctype_f16 uint32_t
#define dh_ctype_f32 float32
#define dh_ctype_f64 float64
#define dh_ctype_ptr void *
#define dh_ctype_cptr const void *
#define dh_ctype_void void
#define dh_ctype_noreturn void QEMU_NORETURN
#define dh_ctype(t) dh_ctype_##t
#ifdef NEED_CPU_H
# ifdef TARGET_LONG_BITS
# if TARGET_LONG_BITS == 32
# define dh_alias_tl i32
# else
# define dh_alias_tl i64
# endif
# endif
# define dh_alias_env ptr
# define dh_ctype_tl target_ulong
# define dh_ctype_env CPUArchState *
#endif
/* We can't use glue() here because it falls foul of C preprocessor
recursive expansion rules. */
#define dh_retvar_decl0_void void
#define dh_retvar_decl0_noreturn void
#define dh_retvar_decl0_i32 TCGv_i32 retval
#define dh_retvar_decl0_i64 TCGv_i64 retval
#define dh_retvar_decl0_ptr TCGv_ptr retval
#define dh_retvar_decl0(t) glue(dh_retvar_decl0_, dh_alias(t))
#define dh_retvar_decl_void
#define dh_retvar_decl_noreturn
#define dh_retvar_decl_i32 TCGv_i32 retval,
#define dh_retvar_decl_i64 TCGv_i64 retval,
#define dh_retvar_decl_ptr TCGv_ptr retval,
#define dh_retvar_decl(t) glue(dh_retvar_decl_, dh_alias(t))
#define dh_retvar_void NULL
#define dh_retvar_noreturn NULL
#define dh_retvar_i32 tcgv_i32_temp(retval)
#define dh_retvar_i64 tcgv_i64_temp(retval)
#define dh_retvar_ptr tcgv_ptr_temp(retval)
#define dh_retvar(t) glue(dh_retvar_, dh_alias(t))
#define dh_is_64bit_void 0
#define dh_is_64bit_noreturn 0
#define dh_is_64bit_i32 0
#define dh_is_64bit_i64 1
#define dh_is_64bit_ptr (sizeof(void *) == 8)
#define dh_is_64bit_cptr dh_is_64bit_ptr
#define dh_is_64bit(t) glue(dh_is_64bit_, dh_alias(t))
#define dh_is_signed_void 0
#define dh_is_signed_noreturn 0
#define dh_is_signed_i32 0
#define dh_is_signed_s32 1
#define dh_is_signed_i64 0
#define dh_is_signed_s64 1
#define dh_is_signed_f16 0
#define dh_is_signed_f32 0
#define dh_is_signed_f64 0
#define dh_is_signed_tl 0
#define dh_is_signed_int 1
/* ??? This is highly specific to the host cpu. There are even special
extension instructions that may be required, e.g. ia64's addp4. But
for now we don't support any 64-bit targets with 32-bit pointers. */
#define dh_is_signed_ptr 0
#define dh_is_signed_cptr dh_is_signed_ptr
#define dh_is_signed_env dh_is_signed_ptr
#define dh_is_signed(t) dh_is_signed_##t
#define dh_callflag_i32 0
#define dh_callflag_s32 0
#define dh_callflag_int 0
#define dh_callflag_i64 0
#define dh_callflag_s64 0
#define dh_callflag_f16 0
#define dh_callflag_f32 0
#define dh_callflag_f64 0
#define dh_callflag_ptr 0
#define dh_callflag_cptr dh_callflag_ptr
#define dh_callflag_void 0
#define dh_callflag_noreturn TCG_CALL_NO_RETURN
#define dh_callflag(t) glue(dh_callflag_, dh_alias(t))
#define dh_sizemask(t, n) \
((dh_is_64bit(t) << (n*2)) | (dh_is_signed(t) << (n*2+1)))
#define dh_arg(t, n) \
glue(glue(tcgv_, dh_alias(t)), _temp)(glue(arg, n))
#define dh_arg_decl(t, n) glue(TCGv_, dh_alias(t)) glue(arg, n)
#define DEF_HELPER_0(name, ret) \
DEF_HELPER_FLAGS_0(name, 0, ret)
#define DEF_HELPER_1(name, ret, t1) \
DEF_HELPER_FLAGS_1(name, 0, ret, t1)
#define DEF_HELPER_2(name, ret, t1, t2) \
DEF_HELPER_FLAGS_2(name, 0, ret, t1, t2)
#define DEF_HELPER_3(name, ret, t1, t2, t3) \
DEF_HELPER_FLAGS_3(name, 0, ret, t1, t2, t3)
#define DEF_HELPER_4(name, ret, t1, t2, t3, t4) \
DEF_HELPER_FLAGS_4(name, 0, ret, t1, t2, t3, t4)
#define DEF_HELPER_5(name, ret, t1, t2, t3, t4, t5) \
DEF_HELPER_FLAGS_5(name, 0, ret, t1, t2, t3, t4, t5)
#define DEF_HELPER_6(name, ret, t1, t2, t3, t4, t5, t6) \
DEF_HELPER_FLAGS_6(name, 0, ret, t1, t2, t3, t4, t5, t6)
/* MAX_OPC_PARAM_IARGS must be set to n if last entry is DEF_HELPER_FLAGS_n. */
#endif /* EXEC_HELPER_HEAD_H */