diff options
Diffstat (limited to 'tinyc/tests/tests2/95_bitfields.c')
| -rw-r--r-- | tinyc/tests/tests2/95_bitfields.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/tinyc/tests/tests2/95_bitfields.c b/tinyc/tests/tests2/95_bitfields.c new file mode 100644 index 000000000..f025c575d --- /dev/null +++ b/tinyc/tests/tests2/95_bitfields.c @@ -0,0 +1,218 @@ +/* ----------------------------------------------------------------------- */ +#if TEST == 1 +{ + struct M P A __s + { + unsigned x : 12; + unsigned char y : 7; + unsigned z : 28; + unsigned a: 4; + unsigned b: 5; + }; + TEST_STRUCT(0x333,0x44,0x555555,6,7); +} + +/* ----------------------------------------------------------------------- */ +#elif TEST == 2 +{ + struct M P __s + { + int x: 12; + char y: 6; + long long z:63; + A char a:4; + long long b:2; + + }; + TEST_STRUCT(3,30,0x123456789abcdef0LL,5,2); +} + +/* ----------------------------------------------------------------------- */ +#elif TEST == 3 +{ + struct M P __s + { + unsigned x:5, y:5, :0, z:5; char a:5; A short b:5; + }; + TEST_STRUCT(21,23,25,6,14); +} + +/* ----------------------------------------------------------------------- */ +#elif TEST == 4 +{ + struct M P __s { + int x : 3; + int : 2; + int y : 1; + int : 0; + int z : 5; + int a : 7; + unsigned int b : 7; + }; + TEST_STRUCT(3,1,15,120,120); +} + +/* ----------------------------------------------------------------------- */ +#elif TEST == 5 +{ + struct M P __s { + long long x : 45; + long long : 2; + long long y : 30; + unsigned long long z : 38; + char a; short b; + }; + TEST_STRUCT(0x123456789ULL, 120<<25, 120, 0x44, 0x77); +} + +/* ----------------------------------------------------------------------- */ +#elif TEST == 6 +{ + struct M P __s { + int a; + signed char b; + int x : 12, y : 4, : 0, : 4, z : 3; + char d; + }; + TEST_STRUCT(1,2,3,4,-3); +} + +/* ----------------------------------------------------------------------- */ +#elif defined PACK + +#if PACK +# pragma pack(push,1) +# define P //_P +#else +# define P +#endif + +printf("\n\n" + 2*top); +#define TEST 1 +#include SELF +top = 0; +#define TEST 2 +#include SELF +#define TEST 3 +#include SELF +#define TEST 4 +#include SELF +#define TEST 5 +#include SELF +#define TEST 6 +#include SELF + +#if PACK +# pragma pack(pop) +#endif + +#undef P +#undef PACK + +/* ----------------------------------------------------------------------- */ +#elif defined ALIGN + +#if ALIGN +# define A _A(16) +#else +# define A +#endif + +#define PACK 0 +#include SELF +#define PACK 1 +#include SELF + +#undef A +#undef ALIGN + +/* ----------------------------------------------------------------------- */ +#elif defined MS_BF + +#if MS_BF +# ifdef __TINYC__ +# pragma comment(option, "-mms-bitfields") +# elif defined __GNUC__ +# define M __attribute__((ms_struct)) +# endif +#else +# ifdef __TINYC__ +# pragma comment(option, "-mno-ms-bitfields") +# elif defined __GNUC__ +# define M __attribute__((gcc_struct)) +# endif +#endif +#ifndef M +# define M +#endif + +#define ALIGN 0 +#include SELF +#define ALIGN 1 +#include SELF + +#undef M +#undef MS_BF + +/* ----------------------------------------------------------------------- */ +#else + +#include <stdio.h> +#include <string.h> +/* some gcc headers #define __attribute__ to empty if it's not gcc */ +#undef __attribute__ + +void dump(void *p, int s) +{ + int i; + for (i = s; --i >= 0;) + printf("%02X", ((unsigned char*)p)[i]); + printf("\n"); +} + +#define pv(m) \ + printf(sizeof (s->m + 0) == 8 ? " %016llx" : " %02x", s->m) + +#define TEST_STRUCT(v1,v2,v3,v4,v5) { \ + struct __s _s, *s = & _s; \ + printf("\n---- TEST %d%s%s%s ----\n" + top, \ + TEST, MS_BF?" - MS-BITFIELDS":"", \ + PACK?" - PACKED":"", \ + ALIGN?" - WITH ALIGN":""); \ + memset(s, 0, sizeof *s); \ + s->x = -1, s->y = -1, s->z = -1, s->a = -1, s->b = -1; \ + printf("bits in use : "), dump(s, sizeof *s); \ + s->x = v1, s->y = v2, s->z = v3, s->a += v4, ++s->a, s->b = v5; \ + printf("bits as set : "), dump(s, sizeof *s); \ + printf("values :"), pv(x), pv(y), pv(z), pv(a), pv(b), printf("\n"); \ + printf("align/size : %d %d\n", alignof(struct __s),sizeof(struct __s)); \ + } + +#ifdef _MSC_VER +# define _A(n) __declspec(align(n)) +# define _P +# define alignof(x) __alignof(x) +#else +# define _A(n) __attribute__((aligned(n))) +# define _P __attribute__((packed)) +# define alignof(x) __alignof__(x) +#endif + +#ifndef MS_BITFIELDS +# define MS_BITFIELDS 0 +#endif + +#define SELF "95_bitfields.c" + +int top = 1; + +int main() +{ +#define MS_BF MS_BITFIELDS +#include SELF + return 0; +} + +/* ----------------------------------------------------------------------- */ +#endif +#undef TEST |