7319d83a73
We will shortly be interested in distinguishing pointers from integers in the helper's declaration, as well as a true void return. We currently have two parallel 1 bit fields; merge them and expand to a 3 bit field. Our current maximum is 7 helper arguments, plus the return makes 8 * 3 = 24 bits used within the uint32_t typemask. Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
138 lines
4.5 KiB
C
138 lines
4.5 KiB
C
/* Helper file for declaring TCG helper functions.
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Used by other helper files.
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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 EXEC_HELPER_HEAD_H
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#define EXEC_HELPER_HEAD_H
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#define HELPER(name) glue(helper_, name)
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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_f16 i32
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#define dh_alias_f32 i32
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#define dh_alias_f64 i64
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#define dh_alias_ptr ptr
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#define dh_alias_cptr ptr
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#define dh_alias_void void
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#define dh_alias_noreturn noreturn
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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_f16 uint32_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_ptr void *
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#define dh_ctype_cptr const void *
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#define dh_ctype_void void
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#define dh_ctype_noreturn void QEMU_NORETURN
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#define dh_ctype(t) dh_ctype_##t
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#ifdef NEED_CPU_H
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# ifdef TARGET_LONG_BITS
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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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# endif
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# define dh_alias_env ptr
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# define dh_ctype_tl target_ulong
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# define dh_ctype_env CPUArchState *
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#endif
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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_noreturn 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_ptr 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_noreturn
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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_ptr 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 NULL
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#define dh_retvar_noreturn NULL
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#define dh_retvar_i32 tcgv_i32_temp(retval)
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#define dh_retvar_i64 tcgv_i64_temp(retval)
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#define dh_retvar_ptr tcgv_ptr_temp(retval)
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#define dh_retvar(t) glue(dh_retvar_, dh_alias(t))
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#define dh_typecode_void 0
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#define dh_typecode_noreturn 0
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#define dh_typecode_i32 2
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#define dh_typecode_s32 3
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#define dh_typecode_i64 4
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#define dh_typecode_s64 5
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#define dh_typecode_ptr 6
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#define dh_typecode(t) glue(dh_typecode_, dh_alias(t))
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#define dh_callflag_i32 0
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#define dh_callflag_s32 0
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#define dh_callflag_int 0
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#define dh_callflag_i64 0
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#define dh_callflag_s64 0
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#define dh_callflag_f16 0
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#define dh_callflag_f32 0
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#define dh_callflag_f64 0
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#define dh_callflag_ptr 0
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#define dh_callflag_cptr dh_callflag_ptr
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#define dh_callflag_void 0
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#define dh_callflag_noreturn TCG_CALL_NO_RETURN
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#define dh_callflag(t) glue(dh_callflag_, dh_alias(t))
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#define dh_typemask(t, n) (dh_typecode(t) << (n * 3))
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#define dh_arg(t, n) \
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glue(glue(tcgv_, dh_alias(t)), _temp)(glue(arg, 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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#define DEF_HELPER_5(name, ret, t1, t2, t3, t4, t5) \
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DEF_HELPER_FLAGS_5(name, 0, ret, t1, t2, t3, t4, t5)
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#define DEF_HELPER_6(name, ret, t1, t2, t3, t4, t5, t6) \
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DEF_HELPER_FLAGS_6(name, 0, ret, t1, t2, t3, t4, t5, t6)
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#define DEF_HELPER_7(name, ret, t1, t2, t3, t4, t5, t6, t7) \
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DEF_HELPER_FLAGS_7(name, 0, ret, t1, t2, t3, t4, t5, t6, t7)
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/* MAX_OPC_PARAM_IARGS must be set to n if last entry is DEF_HELPER_FLAGS_n. */
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#endif /* EXEC_HELPER_HEAD_H */
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