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Diffstat (limited to 'include/exec/helper-head.h')
| -rw-r--r-- | include/exec/helper-head.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/include/exec/helper-head.h b/include/exec/helper-head.h new file mode 100644 index 0000000000..2cbae22b5f --- /dev/null +++ b/include/exec/helper-head.h @@ -0,0 +1,132 @@ +/* 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 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_noreturn noreturn +#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_noreturn void QEMU_NORETURN +#define dh_ctype_env CPUArchState * +#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_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 TCG_CALL_DUMMY_ARG +#define dh_retvar_noreturn 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_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(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_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_env dh_is_signed_ptr +#define dh_is_signed(t) dh_is_signed_##t + +#define dh_sizemask(t, n) \ + sizemask |= dh_is_64bit(t) << (n*2); \ + sizemask |= dh_is_signed(t) << (n*2+1) + +#define dh_arg(t, n) \ + args[n - 1] = glue(GET_TCGV_, dh_alias(t))(glue(arg, n)); \ + dh_sizemask(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) +#define DEF_HELPER_5(name, ret, t1, t2, t3, t4, t5) \ + DEF_HELPER_FLAGS_5(name, 0, ret, t1, t2, t3, t4, t5) + +/* MAX_OPC_PARAM_IARGS must be set to n if last entry is DEF_HELPER_FLAGS_n. */ + +#endif /* DEF_HELPER_H */ |