pbrook | a7812ae | 2008-11-17 14:43:54 +0000 | [diff] [blame] | 1 | /* Helper file for declaring TCG helper functions. |
| 2 | Should be included at the start and end of target-foo/helper.h. |
| 3 | |
| 4 | Targets should use DEF_HELPER_N and DEF_HELPER_FLAGS_N to declare helper |
| 5 | functions. Names should be specified without the helper_ prefix, and |
| 6 | the return and argument types specified. 3 basic types are understood |
| 7 | (i32, i64 and ptr). Additional aliases are provided for convenience and |
| 8 | to match the types used by the C helper implementation. |
| 9 | |
| 10 | The target helper.h should be included in all files that use/define |
| 11 | helper functions. THis will ensure that function prototypes are |
| 12 | consistent. In addition it should be included an extra two times for |
| 13 | helper.c, defining: |
| 14 | GEN_HELPER 1 to produce op generation functions (gen_helper_*) |
| 15 | GEN_HELPER 2 to do runtime registration helper functions. |
| 16 | */ |
| 17 | |
| 18 | #ifndef DEF_HELPER_H |
| 19 | #define DEF_HELPER_H 1 |
| 20 | |
| 21 | #define HELPER(name) glue(helper_, name) |
| 22 | |
| 23 | #define GET_TCGV_i32 GET_TCGV_I32 |
| 24 | #define GET_TCGV_i64 GET_TCGV_I64 |
| 25 | #define GET_TCGV_ptr GET_TCGV_PTR |
| 26 | |
| 27 | /* Some types that make sense in C, but not for TCG. */ |
| 28 | #define dh_alias_i32 i32 |
| 29 | #define dh_alias_s32 i32 |
| 30 | #define dh_alias_int i32 |
| 31 | #define dh_alias_i64 i64 |
| 32 | #define dh_alias_s64 i64 |
| 33 | #define dh_alias_f32 i32 |
| 34 | #define dh_alias_f64 i64 |
| 35 | #if TARGET_LONG_BITS == 32 |
| 36 | #define dh_alias_tl i32 |
| 37 | #else |
| 38 | #define dh_alias_tl i64 |
| 39 | #endif |
| 40 | #define dh_alias_ptr ptr |
| 41 | #define dh_alias_void void |
| 42 | #define dh_alias_env ptr |
| 43 | #define dh_alias(t) glue(dh_alias_, t) |
| 44 | |
| 45 | #define dh_ctype_i32 uint32_t |
| 46 | #define dh_ctype_s32 int32_t |
| 47 | #define dh_ctype_int int |
| 48 | #define dh_ctype_i64 uint64_t |
| 49 | #define dh_ctype_s64 int64_t |
| 50 | #define dh_ctype_f32 float32 |
| 51 | #define dh_ctype_f64 float64 |
| 52 | #define dh_ctype_tl target_ulong |
| 53 | #define dh_ctype_ptr void * |
| 54 | #define dh_ctype_void void |
| 55 | #define dh_ctype_env CPUState * |
| 56 | #define dh_ctype(t) dh_ctype_##t |
| 57 | |
| 58 | /* We can't use glue() here because it falls foul of C preprocessor |
| 59 | recursive expansion rules. */ |
| 60 | #define dh_retvar_decl0_void void |
| 61 | #define dh_retvar_decl0_i32 TCGv_i32 retval |
| 62 | #define dh_retvar_decl0_i64 TCGv_i64 retval |
Igor Kovalenko | 9c9c310 | 2009-07-19 23:46:09 +0400 | [diff] [blame] | 63 | #define dh_retvar_decl0_ptr TCGv_ptr retval |
pbrook | a7812ae | 2008-11-17 14:43:54 +0000 | [diff] [blame] | 64 | #define dh_retvar_decl0(t) glue(dh_retvar_decl0_, dh_alias(t)) |
| 65 | |
| 66 | #define dh_retvar_decl_void |
| 67 | #define dh_retvar_decl_i32 TCGv_i32 retval, |
| 68 | #define dh_retvar_decl_i64 TCGv_i64 retval, |
Igor Kovalenko | 9c9c310 | 2009-07-19 23:46:09 +0400 | [diff] [blame] | 69 | #define dh_retvar_decl_ptr TCGv_ptr retval, |
pbrook | a7812ae | 2008-11-17 14:43:54 +0000 | [diff] [blame] | 70 | #define dh_retvar_decl(t) glue(dh_retvar_decl_, dh_alias(t)) |
| 71 | |
| 72 | #define dh_retvar_void TCG_CALL_DUMMY_ARG |
| 73 | #define dh_retvar_i32 GET_TCGV_i32(retval) |
| 74 | #define dh_retvar_i64 GET_TCGV_i64(retval) |
| 75 | #define dh_retvar_ptr GET_TCGV_ptr(retval) |
| 76 | #define dh_retvar(t) glue(dh_retvar_, dh_alias(t)) |
| 77 | |
| 78 | #define dh_is_64bit_void 0 |
| 79 | #define dh_is_64bit_i32 0 |
| 80 | #define dh_is_64bit_i64 1 |
| 81 | #define dh_is_64bit_ptr (TCG_TARGET_REG_BITS == 64) |
| 82 | #define dh_is_64bit(t) glue(dh_is_64bit_, dh_alias(t)) |
| 83 | |
Richard Henderson | 2bece2c | 2010-06-14 17:35:27 -0700 | [diff] [blame] | 84 | #define dh_is_signed_void 0 |
| 85 | #define dh_is_signed_i32 0 |
| 86 | #define dh_is_signed_s32 1 |
| 87 | #define dh_is_signed_i64 0 |
| 88 | #define dh_is_signed_s64 1 |
| 89 | #define dh_is_signed_f32 0 |
| 90 | #define dh_is_signed_f64 0 |
| 91 | #define dh_is_signed_tl 0 |
| 92 | #define dh_is_signed_int 1 |
| 93 | /* ??? This is highly specific to the host cpu. There are even special |
| 94 | extension instructions that may be required, e.g. ia64's addp4. But |
| 95 | for now we don't support any 64-bit targets with 32-bit pointers. */ |
| 96 | #define dh_is_signed_ptr 0 |
| 97 | #define dh_is_signed_env dh_is_signed_ptr |
| 98 | #define dh_is_signed(t) dh_is_signed_##t |
| 99 | |
| 100 | #define dh_sizemask(t, n) \ |
| 101 | sizemask |= dh_is_64bit(t) << (n*2); \ |
| 102 | sizemask |= dh_is_signed(t) << (n*2+1) |
| 103 | |
pbrook | a7812ae | 2008-11-17 14:43:54 +0000 | [diff] [blame] | 104 | #define dh_arg(t, n) \ |
| 105 | args[n - 1] = glue(GET_TCGV_, dh_alias(t))(glue(arg, n)); \ |
Richard Henderson | 2bece2c | 2010-06-14 17:35:27 -0700 | [diff] [blame] | 106 | dh_sizemask(t, n) |
pbrook | a7812ae | 2008-11-17 14:43:54 +0000 | [diff] [blame] | 107 | |
| 108 | #define dh_arg_decl(t, n) glue(TCGv_, dh_alias(t)) glue(arg, n) |
| 109 | |
| 110 | |
| 111 | #define DEF_HELPER_0(name, ret) \ |
| 112 | DEF_HELPER_FLAGS_0(name, 0, ret) |
| 113 | #define DEF_HELPER_1(name, ret, t1) \ |
| 114 | DEF_HELPER_FLAGS_1(name, 0, ret, t1) |
| 115 | #define DEF_HELPER_2(name, ret, t1, t2) \ |
| 116 | DEF_HELPER_FLAGS_2(name, 0, ret, t1, t2) |
| 117 | #define DEF_HELPER_3(name, ret, t1, t2, t3) \ |
| 118 | DEF_HELPER_FLAGS_3(name, 0, ret, t1, t2, t3) |
| 119 | #define DEF_HELPER_4(name, ret, t1, t2, t3, t4) \ |
| 120 | DEF_HELPER_FLAGS_4(name, 0, ret, t1, t2, t3, t4) |
| 121 | |
| 122 | #endif /* DEF_HELPER_H */ |
| 123 | |
| 124 | #ifndef GEN_HELPER |
| 125 | /* Function prototypes. */ |
| 126 | |
| 127 | #define DEF_HELPER_FLAGS_0(name, flags, ret) \ |
| 128 | dh_ctype(ret) HELPER(name) (void); |
| 129 | |
| 130 | #define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \ |
| 131 | dh_ctype(ret) HELPER(name) (dh_ctype(t1)); |
| 132 | |
| 133 | #define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \ |
| 134 | dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2)); |
| 135 | |
| 136 | #define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \ |
| 137 | dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3)); |
| 138 | |
| 139 | #define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \ |
| 140 | dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \ |
| 141 | dh_ctype(t4)); |
| 142 | |
| 143 | #undef GEN_HELPER |
| 144 | #define GEN_HELPER -1 |
| 145 | |
| 146 | #elif GEN_HELPER == 1 |
| 147 | /* Gen functions. */ |
| 148 | |
| 149 | #define DEF_HELPER_FLAGS_0(name, flags, ret) \ |
| 150 | static inline void glue(gen_helper_, name)(dh_retvar_decl0(ret)) \ |
| 151 | { \ |
| 152 | int sizemask; \ |
| 153 | sizemask = dh_is_64bit(ret); \ |
| 154 | tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 0, NULL); \ |
| 155 | } |
| 156 | |
| 157 | #define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \ |
| 158 | static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1)) \ |
| 159 | { \ |
| 160 | TCGArg args[1]; \ |
Richard Henderson | 2bece2c | 2010-06-14 17:35:27 -0700 | [diff] [blame] | 161 | int sizemask = 0; \ |
| 162 | dh_sizemask(ret, 0); \ |
pbrook | a7812ae | 2008-11-17 14:43:54 +0000 | [diff] [blame] | 163 | dh_arg(t1, 1); \ |
| 164 | tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 1, args); \ |
| 165 | } |
| 166 | |
| 167 | #define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \ |
| 168 | static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1), \ |
| 169 | dh_arg_decl(t2, 2)) \ |
| 170 | { \ |
| 171 | TCGArg args[2]; \ |
Richard Henderson | 2bece2c | 2010-06-14 17:35:27 -0700 | [diff] [blame] | 172 | int sizemask = 0; \ |
| 173 | dh_sizemask(ret, 0); \ |
pbrook | a7812ae | 2008-11-17 14:43:54 +0000 | [diff] [blame] | 174 | dh_arg(t1, 1); \ |
| 175 | dh_arg(t2, 2); \ |
| 176 | tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 2, args); \ |
| 177 | } |
| 178 | |
| 179 | #define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \ |
| 180 | static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1), \ |
| 181 | dh_arg_decl(t2, 2), dh_arg_decl(t3, 3)) \ |
| 182 | { \ |
| 183 | TCGArg args[3]; \ |
Richard Henderson | 2bece2c | 2010-06-14 17:35:27 -0700 | [diff] [blame] | 184 | int sizemask = 0; \ |
| 185 | dh_sizemask(ret, 0); \ |
pbrook | a7812ae | 2008-11-17 14:43:54 +0000 | [diff] [blame] | 186 | dh_arg(t1, 1); \ |
| 187 | dh_arg(t2, 2); \ |
| 188 | dh_arg(t3, 3); \ |
| 189 | tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 3, args); \ |
| 190 | } |
| 191 | |
| 192 | #define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \ |
| 193 | static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) dh_arg_decl(t1, 1), \ |
| 194 | dh_arg_decl(t2, 2), dh_arg_decl(t3, 3), dh_arg_decl(t4, 4)) \ |
| 195 | { \ |
| 196 | TCGArg args[4]; \ |
Richard Henderson | 2bece2c | 2010-06-14 17:35:27 -0700 | [diff] [blame] | 197 | int sizemask = 0; \ |
| 198 | dh_sizemask(ret, 0); \ |
pbrook | a7812ae | 2008-11-17 14:43:54 +0000 | [diff] [blame] | 199 | dh_arg(t1, 1); \ |
| 200 | dh_arg(t2, 2); \ |
| 201 | dh_arg(t3, 3); \ |
| 202 | dh_arg(t4, 4); \ |
| 203 | tcg_gen_helperN(HELPER(name), flags, sizemask, dh_retvar(ret), 4, args); \ |
| 204 | } |
| 205 | |
| 206 | #undef GEN_HELPER |
| 207 | #define GEN_HELPER -1 |
| 208 | |
| 209 | #elif GEN_HELPER == 2 |
| 210 | /* Register helpers. */ |
| 211 | |
| 212 | #define DEF_HELPER_FLAGS_0(name, flags, ret) \ |
| 213 | tcg_register_helper(HELPER(name), #name); |
| 214 | |
| 215 | #define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \ |
| 216 | DEF_HELPER_FLAGS_0(name, flags, ret) |
| 217 | |
| 218 | #define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \ |
| 219 | DEF_HELPER_FLAGS_0(name, flags, ret) |
| 220 | |
| 221 | #define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \ |
| 222 | DEF_HELPER_FLAGS_0(name, flags, ret) |
| 223 | |
| 224 | #define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \ |
| 225 | DEF_HELPER_FLAGS_0(name, flags, ret) |
| 226 | |
| 227 | #undef GEN_HELPER |
| 228 | #define GEN_HELPER -1 |
| 229 | |
| 230 | #elif GEN_HELPER == -1 |
| 231 | /* Undefine macros. */ |
| 232 | |
| 233 | #undef DEF_HELPER_FLAGS_0 |
| 234 | #undef DEF_HELPER_FLAGS_1 |
| 235 | #undef DEF_HELPER_FLAGS_2 |
| 236 | #undef DEF_HELPER_FLAGS_3 |
| 237 | #undef DEF_HELPER_FLAGS_4 |
| 238 | #undef GEN_HELPER |
| 239 | |
| 240 | #endif |