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Diffstat (limited to 'def-helper.h')
| -rw-r--r-- | def-helper.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/def-helper.h b/def-helper.h new file mode 100644 index 0000000000..98a5f68074 --- /dev/null +++ b/def-helper.h @@ -0,0 +1,221 @@ +/* Helper file for declaring TCG helper functions. + Should be included at the start and end of target-foo/helper.h. + + 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 DEF_HELPER_H +#define DEF_HELPER_H 1 + +#define HELPER(name) glue(helper_, name) + +#define GET_TCGV_i32 GET_TCGV_I32 +#define GET_TCGV_i64 GET_TCGV_I64 +#define GET_TCGV_ptr GET_TCGV_PTR + +/* 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_f32 i32 +#define dh_alias_f64 i64 +#if TARGET_LONG_BITS == 32 +#define dh_alias_tl i32 +#else +#define dh_alias_tl i64 +#endif +#define dh_alias_ptr ptr +#define dh_alias_void void +#define dh_alias_env ptr +#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_f32 float32 +#define dh_ctype_f64 float64 +#define dh_ctype_tl target_ulong +#define dh_ctype_ptr void * +#define dh_ctype_void void +#define dh_ctype_env CPUState * +#define dh_ctype(t) dh_ctype_##t + +/* 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_i32 TCGv_i32 retval +#define dh_retvar_decl0_i64 TCGv_i64 retval +#define dh_retvar_decl0_ptr TCGv_iptr retval +#define dh_retvar_decl0(t) glue(dh_retvar_decl0_, dh_alias(t)) + +#define dh_retvar_decl_void +#define dh_retvar_decl_i32 TCGv_i32 retval, +#define dh_retvar_decl_i64 TCGv_i64 retval, +#define dh_retvar_decl_ptr TCGv_iptr retval, +#define dh_retvar_decl(t) glue(dh_retvar_decl_, dh_alias(t)) + +#define dh_retvar_void TCG_CALL_DUMMY_ARG +#define dh_retvar_i32 GET_TCGV_i32(retval) +#define dh_retvar_i64 GET_TCGV_i64(retval) +#define dh_retvar_ptr GET_TCGV_ptr(retval) +#define dh_retvar(t) glue(dh_retvar_, dh_alias(t)) + +#define dh_is_64bit_void 0 +#define dh_is_64bit_i32 0 +#define dh_is_64bit_i64 1 +#define dh_is_64bit_ptr (TCG_TARGET_REG_BITS == 64) +#define dh_is_64bit(t) glue(dh_is_64bit_, dh_alias(t)) + +#define dh_arg(t, n) \ + args[n - 1] = glue(GET_TCGV_, dh_alias(t))(glue(arg, n)); \ + sizemask |= dh_is_64bit(t) << 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) + +#endif /* DEF_HELPER_H */ + +#ifndef GEN_HELPER +/* Function prototypes. */ + +#define DEF_HELPER_FLAGS_0(name, flags, ret) \ +dh_ctype(ret) HELPER(name) (void); + +#define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \ +dh_ctype(ret) HELPER(name) (dh_ctype(t1)); + +#define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \ +dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2)); + +#define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \ +dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3)); + +#define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \ +dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \ + dh_ctype(t4)); + +#undef GEN_HELPER +#define GEN_HELPER -1 + +#elif GEN_HELPER == 1 +/* Gen functions. */ + +#define DEF_HELPER_FLAGS_0(name, flags, ret) \ +static inline void glue(gen_helper_, name)(dh_retvar_decl0(ret)) \ +{ \ + int sizemask; \ + sizemask = dh_is_64bit(ret); \ + tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 0, NULL); \ +} + +#define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \ +static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1)) \ +{ \ + TCGArg args[1]; \ + int sizemask; \ + sizemask = dh_is_64bit(ret); \ + dh_arg(t1, 1); \ + tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 1, args); \ +} + +#define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \ +static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1), \ + dh_arg_decl(t2, 2)) \ +{ \ + TCGArg args[2]; \ + int sizemask; \ + sizemask = dh_is_64bit(ret); \ + dh_arg(t1, 1); \ + dh_arg(t2, 2); \ + tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 2, args); \ +} + +#define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \ +static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1), \ + dh_arg_decl(t2, 2), dh_arg_decl(t3, 3)) \ +{ \ + TCGArg args[3]; \ + int sizemask; \ + sizemask = dh_is_64bit(ret); \ + dh_arg(t1, 1); \ + dh_arg(t2, 2); \ + dh_arg(t3, 3); \ + tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 3, args); \ +} + +#define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \ +static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1), \ + dh_arg_decl(t2, 2), dh_arg_decl(t3, 3), dh_arg_decl(t4, 4)) \ +{ \ + TCGArg args[4]; \ + int sizemask; \ + sizemask = dh_is_64bit(ret); \ + dh_arg(t1, 1); \ + dh_arg(t2, 2); \ + dh_arg(t3, 3); \ + dh_arg(t4, 4); \ + tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 4, args); \ +} + +#undef GEN_HELPER +#define GEN_HELPER -1 + +#elif GEN_HELPER == 2 +/* Register helpers. */ + +#define DEF_HELPER_FLAGS_0(name, flags, ret) \ +tcg_register_helper(HELPER(name), #name); + +#define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \ +DEF_HELPER_FLAGS_0(name, flags, ret) + +#define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \ +DEF_HELPER_FLAGS_0(name, flags, ret) + +#define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \ +DEF_HELPER_FLAGS_0(name, flags, ret) + +#define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \ +DEF_HELPER_FLAGS_0(name, flags, ret) + +#undef GEN_HELPER +#define GEN_HELPER -1 + +#elif GEN_HELPER == -1 +/* Undefine macros. */ + +#undef DEF_HELPER_FLAGS_0 +#undef DEF_HELPER_FLAGS_1 +#undef DEF_HELPER_FLAGS_2 +#undef DEF_HELPER_FLAGS_3 +#undef DEF_HELPER_FLAGS_4 +#undef GEN_HELPER + +#endif + |