tests/abitest.c

   1 #include <libtcc.h>
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <stdarg.h>
   6
   7 // MinGW has 80-bit rather than 64-bit long double which isn't compatible with TCC or MSVC
   8 #if defined(_WIN32) && defined(__GNUC__)
   9 #define LONG_DOUBLE double
  10 #define LONG_DOUBLE_LITERAL(x) x
  11 #else
  12 #define LONG_DOUBLE long double
  13 #define LONG_DOUBLE_LITERAL(x) x ## L
  14 #endif
  15
  16 static const char *tccdir = NULL;
  17 static const char *include_dir = NULL;
  18
  19 typedef int (*callback_type) (void*);
  20
  21 /*
  22  * Compile source code and call a callback with a pointer to the symbol "f".
  23  */
  24 static int run_callback(const char *src, callback_type callback) {
  25   TCCState *s;
  26   int result;
  27   void *ptr;
  28
  29   s = tcc_new();
  30   if (!s)
  31     return -1;
  32   if (tccdir)
  33     tcc_set_lib_path(s, tccdir);
  34   if (include_dir) {
  35     if (tcc_add_include_path(s, include_dir) == -1)
  36       return -1;
  37   }
  38   if (tcc_set_output_type(s, TCC_OUTPUT_MEMORY) == -1)
  39     return -1;
  40   if (tcc_compile_string(s, src) == -1)
  41     return -1;
  42   if (tcc_relocate(s, TCC_RELOCATE_AUTO) == -1)
  43     return -1;
  44
  45   ptr = tcc_get_symbol(s, "f");
  46   if (!ptr)
  47     return -1;
  48   result = callback(ptr);
  49
  50   tcc_delete(s);
  51
  52   return result;
  53 }
  54
  55 #define STR2(x) #x
  56 #define STR(x) STR2(x)
  57
  58 #define RET_PRIMITIVE_TEST(name, type, val) \
  59   static int ret_ ## name ## _test_callback(void *ptr) { \
  60     type (*callback) (type) = (type(*)(type))ptr; \
  61     type x = val; \
  62     type y = callback(x); \
  63     return (y == x+x) ? 0 : -1; \
  64   } \
  65   \
  66   static int ret_ ## name ## _test(void) { \
  67     const char *src = STR(type) " f(" STR(type) " x) {return x+x;}"; \
  68     return run_callback(src, ret_ ## name ## _test_callback); \
  69   }
  70
  71 RET_PRIMITIVE_TEST(int, int, 70000)
  72 RET_PRIMITIVE_TEST(longlong, long long, 4333369356528LL)
  73 RET_PRIMITIVE_TEST(float, float, 63.0)
  74 RET_PRIMITIVE_TEST(double, double, 14789798.0)
  75 RET_PRIMITIVE_TEST(longdouble, LONG_DOUBLE, LONG_DOUBLE_LITERAL(378943892.0))
  76
  77 /*
  78  * ret_2float_test:
  79  *
  80  * On x86-64, a struct with 2 floats should be packed into a single
  81  * SSE register (VT_DOUBLE is used for this purpose).
  82  */
  83 typedef struct ret_2float_test_type_s {float x, y;} ret_2float_test_type;
  84 typedef ret_2float_test_type (*ret_2float_test_function_type) (ret_2float_test_type);
  85
  86 static int ret_2float_test_callback(void *ptr) {
  87   ret_2float_test_function_type f = (ret_2float_test_function_type)ptr;
  88   ret_2float_test_type a = {10, 35};
  89   ret_2float_test_type r;
  90   r = f(a);
  91   return ((r.x == a.x*5) && (r.y == a.y*3)) ? 0 : -1;
  92 }
  93
  94 static int ret_2float_test(void) {
  95   const char *src =
  96   "typedef struct ret_2float_test_type_s {float x, y;} ret_2float_test_type;"
  97   "ret_2float_test_type f(ret_2float_test_type a) {\n"
  98   "  ret_2float_test_type r = {a.x*5, a.y*3};\n"
  99   "  return r;\n"
 100   "}\n";
 101
 102   return run_callback(src, ret_2float_test_callback);
 103 }
 104
 105 /*
 106  * ret_2double_test:
 107  *
 108  * On x86-64, a struct with 2 doubles should be passed in two SSE
 109  * registers.
 110  */
 111 typedef struct ret_2double_test_type_s {double x, y;} ret_2double_test_type;
 112 typedef ret_2double_test_type (*ret_2double_test_function_type) (ret_2double_test_type);
 113
 114 static int ret_2double_test_callback(void *ptr) {
 115   ret_2double_test_function_type f = (ret_2double_test_function_type)ptr;
 116   ret_2double_test_type a = {10, 35};
 117   ret_2double_test_type r;
 118   r = f(a);
 119   return ((r.x == a.x*5) && (r.y == a.y*3)) ? 0 : -1;
 120 }
 121
 122 static int ret_2double_test(void) {
 123   const char *src =
 124   "typedef struct ret_2double_test_type_s {double x, y;} ret_2double_test_type;"
 125   "ret_2double_test_type f(ret_2double_test_type a) {\n"
 126   "  ret_2double_test_type r = {a.x*5, a.y*3};\n"
 127   "  return r;\n"
 128   "}\n";
 129
 130   return run_callback(src, ret_2double_test_callback);
 131 }
 132
 133 /*
 134  * reg_pack_test: return a small struct which should be packed into
 135  * registers (Win32) during return.
 136  */
 137 typedef struct reg_pack_test_type_s {int x, y;} reg_pack_test_type;
 138 typedef reg_pack_test_type (*reg_pack_test_function_type) (reg_pack_test_type);
 139
 140 static int reg_pack_test_callback(void *ptr) {
 141   reg_pack_test_function_type f = (reg_pack_test_function_type)ptr;
 142   reg_pack_test_type a = {10, 35};
 143   reg_pack_test_type r;
 144   r = f(a);
 145   return ((r.x == a.x*5) && (r.y == a.y*3)) ? 0 : -1;
 146 }
 147
 148 static int reg_pack_test(void) {
 149   const char *src =
 150   "typedef struct reg_pack_test_type_s {int x, y;} reg_pack_test_type;"
 151   "reg_pack_test_type f(reg_pack_test_type a) {\n"
 152   "  reg_pack_test_type r = {a.x*5, a.y*3};\n"
 153   "  return r;\n"
 154   "}\n";
 155
 156   return run_callback(src, reg_pack_test_callback);
 157 }
 158
 159 /*
 160  * reg_pack_longlong_test: return a small struct which should be packed into
 161  * registers (x86-64) during return.
 162  */
 163 typedef struct reg_pack_longlong_test_type_s {long long x, y;} reg_pack_longlong_test_type;
 164 typedef reg_pack_longlong_test_type (*reg_pack_longlong_test_function_type) (reg_pack_longlong_test_type);
 165
 166 static int reg_pack_longlong_test_callback(void *ptr) {
 167   reg_pack_longlong_test_function_type f = (reg_pack_longlong_test_function_type)ptr;
 168   reg_pack_longlong_test_type a = {10, 35};
 169   reg_pack_longlong_test_type r;
 170   r = f(a);
 171   return ((r.x == a.x*5) && (r.y == a.y*3)) ? 0 : -1;
 172 }
 173
 174 static int reg_pack_longlong_test(void) {
 175   const char *src =
 176   "typedef struct reg_pack_longlong_test_type_s {long long x, y;} reg_pack_longlong_test_type;"
 177   "reg_pack_longlong_test_type f(reg_pack_longlong_test_type a) {\n"
 178   "  reg_pack_longlong_test_type r = {a.x*5, a.y*3};\n"
 179   "  return r;\n"
 180   "}\n";
 181
 182   return run_callback(src, reg_pack_longlong_test_callback);
 183 }
 184
 185 /*
 186  * sret_test: Create a struct large enough to be returned via sret
 187  * (hidden pointer as first function argument)
 188  */
 189 typedef struct sret_test_type_s {long long a, b, c;} sret_test_type;
 190 typedef sret_test_type (*sret_test_function_type) (sret_test_type);
 191
 192 static int sret_test_callback(void *ptr) {
 193   sret_test_function_type f = (sret_test_function_type)(ptr);
 194   sret_test_type x = {5436LL, 658277698LL, 43878957LL};
 195   sret_test_type r = f(x);
 196   return ((r.a==x.a*35)&&(r.b==x.b*19)&&(r.c==x.c*21)) ? 0 : -1;
 197 }
 198
 199 static int sret_test(void) {
 200   const char *src =
 201   "typedef struct sret_test_type_s {long long a, b, c;} sret_test_type;\n"
 202   "sret_test_type f(sret_test_type x) {\n"
 203   "  sret_test_type r = {x.a*35, x.b*19, x.c*21};\n"
 204   "  return r;\n"
 205   "}\n";
 206
 207   return run_callback(src, sret_test_callback);
 208 }
 209
 210 /*
 211  * one_member_union_test:
 212  *
 213  * In the x86-64 ABI a union should always be passed on the stack. However
 214  * it appears that a single member union is treated by GCC as its member.
 215  */
 216 typedef union one_member_union_test_type_u {int x;} one_member_union_test_type;
 217 typedef one_member_union_test_type (*one_member_union_test_function_type) (one_member_union_test_type);
 218
 219 static int one_member_union_test_callback(void *ptr) {
 220   one_member_union_test_function_type f = (one_member_union_test_function_type)ptr;
 221   one_member_union_test_type a, b;
 222   a.x = 34;
 223   b = f(a);
 224   return (b.x == a.x*2) ? 0 : -1;
 225 }
 226
 227 static int one_member_union_test(void) {
 228   const char *src =
 229   "typedef union one_member_union_test_type_u {int x;} one_member_union_test_type;\n"
 230   "one_member_union_test_type f(one_member_union_test_type a) {\n"
 231   "  one_member_union_test_type b;\n"
 232   "  b.x = a.x * 2;\n"
 233   "  return b;\n"
 234   "}\n";
 235   return run_callback(src, one_member_union_test_callback);
 236 }
 237
 238 /*
 239  * two_member_union_test:
 240  *
 241  * In the x86-64 ABI a union should always be passed on the stack.
 242  */
 243 typedef union two_member_union_test_type_u {int x; long y;} two_member_union_test_type;
 244 typedef two_member_union_test_type (*two_member_union_test_function_type) (two_member_union_test_type);
 245
 246 static int two_member_union_test_callback(void *ptr) {
 247   two_member_union_test_function_type f = (two_member_union_test_function_type)ptr;
 248   two_member_union_test_type a, b;
 249   a.x = 34;
 250   b = f(a);
 251   return (b.x == a.x*2) ? 0 : -1;
 252 }
 253
 254 static int two_member_union_test(void) {
 255   const char *src =
 256   "typedef union two_member_union_test_type_u {int x; long y;} two_member_union_test_type;\n"
 257   "two_member_union_test_type f(two_member_union_test_type a) {\n"
 258   "  two_member_union_test_type b;\n"
 259   "  b.x = a.x * 2;\n"
 260   "  return b;\n"
 261   "}\n";
 262   return run_callback(src, two_member_union_test_callback);
 263 }
 264
 265 /*
 266  * Win64 calling convetntion test.
 267  */
 268
 269 typedef struct many_struct_test_type_s {long long a, b, c;} many_struct_test_type;
 270 typedef many_struct_test_type (*many_struct_test_function_type) (many_struct_test_type,many_struct_test_type,many_struct_test_type,many_struct_test_type,many_struct_test_type,many_struct_test_type);
 271
 272 static int many_struct_test_callback(void *ptr) {
 273   many_struct_test_function_type f = (many_struct_test_function_type)ptr;
 274   many_struct_test_type v = {1, 2, 3};
 275   many_struct_test_type r = f(v,v,v,v,v,v);
 276   return ((r.a == 6) && (r.b == 12) && (r.c == 18))?0:-1;
 277 }
 278
 279 static int many_struct_test(void) {
 280   const char *src =
 281   "typedef struct many_struct_test_type_s {long long a, b, c;} many_struct_test_type;\n"
 282   "many_struct_test_type f(many_struct_test_type x1, many_struct_test_type x2, many_struct_test_type x3, many_struct_test_type x4, many_struct_test_type x5, many_struct_test_type x6) {\n"
 283   "  many_struct_test_type y;\n"
 284   "  y.a = x1.a + x2.a + x3.a + x4.a + x5.a + x6.a;\n"
 285   "  y.b = x1.b + x2.b + x3.b + x4.b + x5.b + x6.b;\n"
 286   "  y.c = x1.c + x2.c + x3.c + x4.c + x5.c + x6.c;\n"
 287   "  return y;\n"
 288   "}\n";
 289   return run_callback(src, many_struct_test_callback);
 290 }
 291
 292 /*
 293  * Win64 calling convention test.
 294  */
 295
 296 typedef struct many_struct_test_2_type_s {int a, b;} many_struct_test_2_type;
 297 typedef many_struct_test_2_type (*many_struct_test_2_function_type) (many_struct_test_2_type,many_struct_test_2_type,many_struct_test_2_type,many_struct_test_2_type,many_struct_test_2_type,many_struct_test_2_type);
 298
 299 static int many_struct_test_2_callback(void *ptr) {
 300   many_struct_test_2_function_type f = (many_struct_test_2_function_type)ptr;
 301   many_struct_test_2_type v = {1,2};
 302   many_struct_test_2_type r = f(v,v,v,v,v,v);
 303   return ((r.a == 6) && (r.b == 12))?0:-1;
 304 }
 305
 306 static int many_struct_test_2(void) {
 307   const char *src =
 308   "typedef struct many_struct_test_2_type_s {int a, b;} many_struct_test_2_type;\n"
 309   "many_struct_test_2_type f(many_struct_test_2_type x1, many_struct_test_2_type x2, many_struct_test_2_type x3, many_struct_test_2_type x4, many_struct_test_2_type x5, many_struct_test_2_type x6) {\n"
 310   "  many_struct_test_2_type y;\n"
 311   "  y.a = x1.a + x2.a + x3.a + x4.a + x5.a + x6.a;\n"
 312   "  y.b = x1.b + x2.b + x3.b + x4.b + x5.b + x6.b;\n"
 313   "  return y;\n"
 314   "}\n";
 315   return run_callback(src, many_struct_test_2_callback);
 316 }
 317
 318 /*
 319  * stdarg_test: Test variable argument list ABI
 320  */
 321
 322 typedef struct {long long a, b, c;} stdarg_test_struct_type;
 323 typedef void (*stdarg_test_function_type) (int,int,int,...);
 324
 325 static int stdarg_test_callback(void *ptr) {
 326   stdarg_test_function_type f = (stdarg_test_function_type)ptr;
 327   int x;
 328   double y;
 329   stdarg_test_struct_type z = {1, 2, 3}, w;
 330   f(10, 10, 5,
 331     1, 2, 3, 4, 5, 6, 7, 8, 9, 10, &x,
 332     1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, &y,
 333     z, z, z, z, z, &w);
 334   return ((x == 55) && (y == 55) && (w.a == 5) && (w.b == 10) && (w.c == 15)) ? 0 : -1;
 335 }
 336
 337 static int stdarg_test(void) {
 338   const char *src =
 339   "#include <stdarg.h>\n"
 340   "typedef struct {long long a, b, c;} stdarg_test_struct_type;\n"
 341   "void f(int n_int, int n_float, int n_struct, ...) {\n"
 342   "  int i, ti = 0;\n"
 343   "  double td = 0.0;\n"
 344   "  stdarg_test_struct_type ts = {0,0,0}, tmp;\n"
 345   "  va_list ap;\n"
 346   "  va_start(ap, n_struct);\n"
 347   "  for (i = 0, ti = 0; i < n_int; ++i)\n"
 348   "    ti += va_arg(ap, int);\n"
 349   "  *va_arg(ap, int*) = ti;\n"
 350   "  for (i = 0, td = 0; i < n_float; ++i)\n"
 351   "    td += va_arg(ap, double);\n"
 352   "  *va_arg(ap, double*) = td;\n"
 353   "  for (i = 0; i < n_struct; ++i) {\n"
 354   "    tmp = va_arg(ap, stdarg_test_struct_type);\n"
 355   "    ts.a += tmp.a; ts.b += tmp.b; ts.c += tmp.c;"
 356   "  }\n"
 357   "  *va_arg(ap, stdarg_test_struct_type*) = ts;\n"
 358   "  va_end(ap);"
 359   "}\n";
 360   return run_callback(src, stdarg_test_callback);
 361 }
 362
 363 /*
 364  * Test Win32 stdarg handling, since the calling convention will pass a pointer
 365  * to the struct and the stdarg pointer must point to that pointer initially.
 366  */
 367
 368 typedef struct {long long a, b, c;} stdarg_struct_test_struct_type;
 369 typedef int (*stdarg_struct_test_function_type) (stdarg_struct_test_struct_type a, ...);
 370
 371 static int stdarg_struct_test_callback(void *ptr) {
 372   stdarg_struct_test_function_type f = (stdarg_struct_test_function_type)ptr;
 373   stdarg_struct_test_struct_type v = {10, 35, 99};
 374   int x = f(v, 234);
 375   return (x == 378) ? 0 : -1;
 376 }
 377
 378 static int stdarg_struct_test(void) {
 379   const char *src =
 380   "#include <stdarg.h>\n"
 381   "typedef struct {long long a, b, c;} stdarg_struct_test_struct_type;\n"
 382   "int f(stdarg_struct_test_struct_type a, ...) {\n"
 383   "  va_list ap;\n"
 384   "  va_start(ap, a);\n"
 385   "  int z = va_arg(ap, int);\n"
 386   "  va_end(ap);\n"
 387   "  return z + a.a + a.b + a.c;\n"
 388   "}\n";
 389   return run_callback(src, stdarg_struct_test_callback);
 390 }
 391
 392 /* Test that x86-64 arranges the stack correctly for arguments with alignment >8 bytes */
 393
 394 typedef LONG_DOUBLE (*arg_align_test_callback_type) (LONG_DOUBLE,int,LONG_DOUBLE,int,LONG_DOUBLE);
 395
 396 static int arg_align_test_callback(void *ptr) {
 397   arg_align_test_callback_type f = (arg_align_test_callback_type)ptr;
 398   long double x = f(12, 0, 25, 0, 37);
 399   return (x == 74) ? 0 : -1;
 400 }
 401
 402 static int arg_align_test(void) {
 403   const char *src =
 404   "long double f(long double a, int b, long double c, int d, long double e) {\n"
 405   "  return a + c + e;\n"
 406   "}\n";
 407   return run_callback(src, arg_align_test_callback);
 408 }
 409
 410 #define RUN_TEST(t) \
 411   if (!testname || (strcmp(#t, testname) == 0)) { \
 412     fputs(#t "... ", stdout); \
 413     fflush(stdout); \
 414     if (t() == 0) { \
 415       fputs("success\n", stdout); \
 416     } else { \
 417       fputs("failure\n", stdout); \
 418       retval = EXIT_FAILURE; \
 419     } \
 420   }
 421
 422 int main(int argc, char **argv) {
 423   int i;
 424   const char *testname = NULL;
 425   int retval = EXIT_SUCCESS;
 426
 427   /* if tcclib.h and libtcc1.a are not installed, where can we find them */
 428   for (i = 1; i < argc; ++i) {
 429     if (!memcmp(argv[i], "lib_path=",9))
 430       tccdir = argv[i] + 9;
 431     else if (!memcmp(argv[i], "run_test=", 9))
 432       testname = argv[i] + 9;
 433     else if (!memcmp(argv[i], "include=", 8))
 434       include_dir = argv[i] + 8;
 435   }
 436
 437   RUN_TEST(ret_int_test);
 438   RUN_TEST(ret_longlong_test);
 439   RUN_TEST(ret_float_test);
 440   RUN_TEST(ret_double_test);
 441   RUN_TEST(ret_longdouble_test);
 442   RUN_TEST(ret_2float_test);
 443   RUN_TEST(ret_2double_test);
 444   RUN_TEST(reg_pack_test);
 445   RUN_TEST(reg_pack_longlong_test);
 446   RUN_TEST(sret_test);
 447   RUN_TEST(one_member_union_test);
 448   RUN_TEST(two_member_union_test);
 449   RUN_TEST(many_struct_test);
 450   RUN_TEST(many_struct_test_2);
 451   RUN_TEST(stdarg_test);
 452   RUN_TEST(stdarg_struct_test);
 453   RUN_TEST(arg_align_test);
 454   return retval;
 455 }