221 lines
6.6 KiB
C
221 lines
6.6 KiB
C
/* Helper file for declaring TCG helper functions.
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Should be included at the start and end of target-foo/helper.h.
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Targets should use DEF_HELPER_N and DEF_HELPER_FLAGS_N to declare helper
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functions. Names should be specified without the helper_ prefix, and
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the return and argument types specified. 3 basic types are understood
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(i32, i64 and ptr). Additional aliases are provided for convenience and
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to match the types used by the C helper implementation.
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The target helper.h should be included in all files that use/define
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helper functions. THis will ensure that function prototypes are
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consistent. In addition it should be included an extra two times for
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helper.c, defining:
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GEN_HELPER 1 to produce op generation functions (gen_helper_*)
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GEN_HELPER 2 to do runtime registration helper functions.
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*/
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#ifndef DEF_HELPER_H
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#define DEF_HELPER_H 1
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#define HELPER(name) glue(helper_, name)
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#define GET_TCGV_i32 GET_TCGV_I32
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#define GET_TCGV_i64 GET_TCGV_I64
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#define GET_TCGV_ptr GET_TCGV_PTR
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/* Some types that make sense in C, but not for TCG. */
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#define dh_alias_i32 i32
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#define dh_alias_s32 i32
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#define dh_alias_int i32
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#define dh_alias_i64 i64
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#define dh_alias_s64 i64
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#define dh_alias_f32 i32
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#define dh_alias_f64 i64
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#if TARGET_LONG_BITS == 32
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#define dh_alias_tl i32
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#else
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#define dh_alias_tl i64
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#endif
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#define dh_alias_ptr ptr
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#define dh_alias_void void
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#define dh_alias_env ptr
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#define dh_alias(t) glue(dh_alias_, t)
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#define dh_ctype_i32 uint32_t
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#define dh_ctype_s32 int32_t
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#define dh_ctype_int int
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#define dh_ctype_i64 uint64_t
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#define dh_ctype_s64 int64_t
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#define dh_ctype_f32 float32
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#define dh_ctype_f64 float64
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#define dh_ctype_tl target_ulong
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#define dh_ctype_ptr void *
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#define dh_ctype_void void
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#define dh_ctype_env CPUState *
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#define dh_ctype(t) dh_ctype_##t
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/* We can't use glue() here because it falls foul of C preprocessor
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recursive expansion rules. */
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#define dh_retvar_decl0_void void
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#define dh_retvar_decl0_i32 TCGv_i32 retval
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#define dh_retvar_decl0_i64 TCGv_i64 retval
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#define dh_retvar_decl0_ptr TCGv_iptr retval
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#define dh_retvar_decl0(t) glue(dh_retvar_decl0_, dh_alias(t))
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#define dh_retvar_decl_void
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#define dh_retvar_decl_i32 TCGv_i32 retval,
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#define dh_retvar_decl_i64 TCGv_i64 retval,
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#define dh_retvar_decl_ptr TCGv_iptr retval,
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#define dh_retvar_decl(t) glue(dh_retvar_decl_, dh_alias(t))
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#define dh_retvar_void TCG_CALL_DUMMY_ARG
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#define dh_retvar_i32 GET_TCGV_i32(retval)
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#define dh_retvar_i64 GET_TCGV_i64(retval)
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#define dh_retvar_ptr GET_TCGV_ptr(retval)
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#define dh_retvar(t) glue(dh_retvar_, dh_alias(t))
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#define dh_is_64bit_void 0
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#define dh_is_64bit_i32 0
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#define dh_is_64bit_i64 1
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#define dh_is_64bit_ptr (TCG_TARGET_REG_BITS == 64)
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#define dh_is_64bit(t) glue(dh_is_64bit_, dh_alias(t))
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#define dh_arg(t, n) \
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args[n - 1] = glue(GET_TCGV_, dh_alias(t))(glue(arg, n)); \
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sizemask |= dh_is_64bit(t) << n
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#define dh_arg_decl(t, n) glue(TCGv_, dh_alias(t)) glue(arg, n)
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#define DEF_HELPER_0(name, ret) \
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DEF_HELPER_FLAGS_0(name, 0, ret)
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#define DEF_HELPER_1(name, ret, t1) \
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DEF_HELPER_FLAGS_1(name, 0, ret, t1)
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#define DEF_HELPER_2(name, ret, t1, t2) \
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DEF_HELPER_FLAGS_2(name, 0, ret, t1, t2)
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#define DEF_HELPER_3(name, ret, t1, t2, t3) \
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DEF_HELPER_FLAGS_3(name, 0, ret, t1, t2, t3)
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#define DEF_HELPER_4(name, ret, t1, t2, t3, t4) \
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DEF_HELPER_FLAGS_4(name, 0, ret, t1, t2, t3, t4)
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#endif /* DEF_HELPER_H */
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#ifndef GEN_HELPER
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/* Function prototypes. */
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#define DEF_HELPER_FLAGS_0(name, flags, ret) \
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dh_ctype(ret) HELPER(name) (void);
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#define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \
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dh_ctype(ret) HELPER(name) (dh_ctype(t1));
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#define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \
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dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2));
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#define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \
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dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3));
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#define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \
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dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
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dh_ctype(t4));
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#undef GEN_HELPER
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#define GEN_HELPER -1
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#elif GEN_HELPER == 1
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/* Gen functions. */
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#define DEF_HELPER_FLAGS_0(name, flags, ret) \
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static inline void glue(gen_helper_, name)(dh_retvar_decl0(ret)) \
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{ \
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int sizemask; \
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sizemask = dh_is_64bit(ret); \
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tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 0, NULL); \
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}
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#define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \
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static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1)) \
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{ \
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TCGArg args[1]; \
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int sizemask; \
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sizemask = dh_is_64bit(ret); \
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dh_arg(t1, 1); \
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tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 1, args); \
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}
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#define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \
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static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1), \
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dh_arg_decl(t2, 2)) \
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{ \
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TCGArg args[2]; \
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int sizemask; \
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sizemask = dh_is_64bit(ret); \
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dh_arg(t1, 1); \
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dh_arg(t2, 2); \
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tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 2, args); \
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}
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#define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \
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static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1), \
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dh_arg_decl(t2, 2), dh_arg_decl(t3, 3)) \
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{ \
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TCGArg args[3]; \
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int sizemask; \
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sizemask = dh_is_64bit(ret); \
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dh_arg(t1, 1); \
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dh_arg(t2, 2); \
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dh_arg(t3, 3); \
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tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 3, args); \
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}
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#define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \
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static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1), \
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dh_arg_decl(t2, 2), dh_arg_decl(t3, 3), dh_arg_decl(t4, 4)) \
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{ \
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TCGArg args[4]; \
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int sizemask; \
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sizemask = dh_is_64bit(ret); \
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dh_arg(t1, 1); \
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dh_arg(t2, 2); \
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dh_arg(t3, 3); \
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dh_arg(t4, 4); \
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tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 4, args); \
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}
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#undef GEN_HELPER
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#define GEN_HELPER -1
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#elif GEN_HELPER == 2
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/* Register helpers. */
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#define DEF_HELPER_FLAGS_0(name, flags, ret) \
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tcg_register_helper(HELPER(name), #name);
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#define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \
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DEF_HELPER_FLAGS_0(name, flags, ret)
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#define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \
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DEF_HELPER_FLAGS_0(name, flags, ret)
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#define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \
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DEF_HELPER_FLAGS_0(name, flags, ret)
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#define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \
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DEF_HELPER_FLAGS_0(name, flags, ret)
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#undef GEN_HELPER
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#define GEN_HELPER -1
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#elif GEN_HELPER == -1
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/* Undefine macros. */
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#undef DEF_HELPER_FLAGS_0
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#undef DEF_HELPER_FLAGS_1
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#undef DEF_HELPER_FLAGS_2
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#undef DEF_HELPER_FLAGS_3
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#undef DEF_HELPER_FLAGS_4
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#undef GEN_HELPER
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#endif
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