241 lines
4.8 KiB
C
241 lines
4.8 KiB
C
/* ----------------------------------------------------------------------- */
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#if TEST == 1
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{
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struct M P A __s
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{
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unsigned x : 12;
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unsigned char y : 7;
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unsigned z : 28;
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unsigned a: 4;
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unsigned b: 5;
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};
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TEST_STRUCT(0x333,0x44,0x555555,6,7);
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}
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/* ----------------------------------------------------------------------- */
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#elif TEST == 2
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{
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struct M P __s
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{
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int x: 12;
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char y: 6;
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long long z:63;
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A char a:4;
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long long b:2;
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};
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TEST_STRUCT(3,30,0x123456789abcdef0LL,5,2);
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}
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/* ----------------------------------------------------------------------- */
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#elif TEST == 3
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{
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struct M P __s
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{
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unsigned x:5, y:5, :0, z:5; char a:5; A short b:5;
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};
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TEST_STRUCT(21,23,25,6,14);
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}
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/* ----------------------------------------------------------------------- */
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#elif TEST == 4
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{
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struct M P __s {
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int x : 3;
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int : 2;
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int y : 1;
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int : 0;
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int z : 5;
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int a : 7;
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unsigned int b : 7;
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};
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TEST_STRUCT(3,1,15,120,120);
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}
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/* ----------------------------------------------------------------------- */
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#elif TEST == 5
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{
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struct M P __s {
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long long x : 45;
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long long : 2;
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long long y : 30;
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unsigned long long z : 38;
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char a; short b;
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};
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TEST_STRUCT(0x123456789ULL, 120<<25, 120, 0x44, 0x77);
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}
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/* ----------------------------------------------------------------------- */
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#elif TEST == 6
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{
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struct M P __s {
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int a;
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signed char b;
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int x : 12, y : 4, : 0, : 4, z : 3;
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char d;
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};
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TEST_STRUCT(1,2,3,4,-3);
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}
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/* ----------------------------------------------------------------------- */
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#elif TEST == 7
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{
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#ifdef _WIN32
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typedef long long int ll;
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#else
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typedef long int ll;
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#endif
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struct M P __s {
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ll d : 16;
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ll b : 16;
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ll x : 16;
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ll y : 1;
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ll z : 2;
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ll a : 11;
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ll e : 1;
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ll f : 1;
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};
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TEST_STRUCT(1,2,3,4,5);
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}
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/* ----------------------------------------------------------------------- */
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#elif defined PACK
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#if PACK
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# pragma pack(push,1)
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# define P //_P
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#else
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# define P
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#endif
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printf("\n\n" + 2*top);
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#define TEST 1
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#include SELF
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top = 0;
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#define TEST 2
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#include SELF
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#define TEST 3
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#include SELF
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#define TEST 4
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#include SELF
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#define TEST 5
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#include SELF
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#define TEST 6
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#include SELF
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#define TEST 7
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#include SELF
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#if PACK
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# pragma pack(pop)
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#endif
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#undef P
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#undef PACK
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/* ----------------------------------------------------------------------- */
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#elif defined ALIGN
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#if ALIGN
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# define A _A(16)
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#else
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# define A
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#endif
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#define PACK 0
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#include SELF
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#define PACK 1
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#include SELF
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#undef A
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#undef ALIGN
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/* ----------------------------------------------------------------------- */
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#elif defined MS_BF
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#if MS_BF
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# ifdef __TINYC__
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# pragma comment(option, "-mms-bitfields")
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# elif defined __GNUC__
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# define M __attribute__((ms_struct))
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# endif
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#else
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# ifdef __TINYC__
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# pragma comment(option, "-mno-ms-bitfields")
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# elif defined __GNUC__
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# define M __attribute__((gcc_struct))
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# endif
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#endif
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#ifndef M
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# define M
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#endif
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#define ALIGN 0
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#include SELF
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#define ALIGN 1
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#include SELF
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#undef M
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#undef MS_BF
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/* ----------------------------------------------------------------------- */
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#else
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#include <stdio.h>
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#include <string.h>
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/* some gcc headers #define __attribute__ to empty if it's not gcc */
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#undef __attribute__
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void dump(void *p, int s)
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{
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int i;
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for (i = s; --i >= 0;)
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printf("%02X", ((unsigned char*)p)[i]);
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printf("\n");
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}
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#define pv(m) \
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printf(sizeof (s->m + 0) == 8 ? " %016llx" : " %02x", s->m)
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#define TEST_STRUCT(v1,v2,v3,v4,v5) { \
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struct __s _s, *s = & _s; \
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printf("\n---- TEST %d%s%s%s ----\n" + top, \
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TEST, MS_BF?" - MS-BITFIELDS":"", \
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PACK?" - PACKED":"", \
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ALIGN?" - WITH ALIGN":""); \
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memset(s, 0, sizeof *s); \
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s->x = -1, s->y = -1, s->z = -1, s->a = -1, s->b = -1; \
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printf("bits in use : "), dump(s, sizeof *s); \
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s->x = v1, s->y = v2, s->z = v3, s->a += v4, ++s->a, s->b = v5; \
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printf("bits as set : "), dump(s, sizeof *s); \
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printf("values :"), pv(x), pv(y), pv(z), pv(a), pv(b), printf("\n"); \
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printf("align/size : %d %d\n", alignof(struct __s),sizeof(struct __s)); \
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}
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#ifdef _MSC_VER
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# define _A(n) __declspec(align(n))
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# define _P
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# define alignof(x) __alignof(x)
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#else
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# define _A(n) __attribute__((aligned(n)))
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# define _P __attribute__((packed))
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# define alignof(x) __alignof__(x)
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#endif
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#ifndef MS_BITFIELDS
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# define MS_BITFIELDS 0
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#endif
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#define SELF "95_bitfields.c"
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int top = 1;
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int main()
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{
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#define MS_BF MS_BITFIELDS
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#include SELF
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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#endif
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#undef TEST
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