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/* Test program to test bit field operations on bit fields of large
integer types. */
/* This file is expected to fail to compile if the type long long int
is not supported, but in that case it is irrelevant. */
#include <stdlib.h>
#include <string.h>
#if !defined(__STDC__) && !defined(__cplusplus)
#define signed /**/
#endif
struct fields
{
unsigned long long u1 : 15;
unsigned long long u2 : 33;
unsigned long long u3 : 16;
signed long long s1 : 15;
signed long long s2 : 33;
signed long long s3 : 16;
} flags;
void break1 ()
{
}
void break2 ()
{
}
void break3 ()
{
}
void break4 ()
{
}
void break5 ()
{
}
void break6 ()
{
}
void break7 ()
{
}
void break8 ()
{
}
void break9 ()
{
}
void break10 ()
{
}
/* This is used by bitfields.exp to determine if the target understands
signed bitfields. */
int i;
void tester ()
{
memset ((char *) &flags, 0, sizeof (flags));
/* For each member, set that member to 1, allow gdb to verify that the
member (and only that member) is 1, and then reset it back to 0. */
flags.s1 = 1;
break1 ();
flags.s1 = 0;
flags.u1 = 1;
break1 ();
flags.u1 = 0;
flags.s2 = 1;
break1 ();
flags.s2 = 0;
flags.u2 = 1;
break1 ();
flags.u2 = 0;
flags.s3 = 1;
break1 ();
flags.s3 = 0;
flags.u3 = 1;
break1 ();
flags.u3 = 0;
/* Fill alternating fields with all 1's and verify that none of the bits
"bleed over" to the other fields. */
flags.u1 = 0x7FFF;
flags.u3 = 0xFFFF;
flags.s2 = -1LL;
break2 ();
flags.u1 = 0;
flags.u3 = 0;
flags.s2 = 0;
flags.u2 = 0x1FFFFFFFFLL;
flags.s1 = -1;
flags.s3 = -1;
break2 ();
flags.u2 = 0;
flags.s1 = 0;
flags.s3 = 0;
/* Fill the unsigned fields with the maximum positive value and verify
that the values are printed correctly. */
flags.u1 = 0x7FFF;
flags.u2 = 0x1FFFFFFFFLL;
flags.u3 = 0xFFFF;
break3 ();
flags.u1 = 0;
flags.u2 = 0;
flags.u3 = 0;
/* Fill the signed fields with the maximum positive value, then the maximally
negative value, then -1, and verify in each case that the values are
printed correctly. */
/* Maximum positive values */
flags.s1 = 0x3FFF;
flags.s2 = 0xFFFFFFFFLL;
flags.s3 = 0x7FFF;
break4 ();
/* Maximally negative values */
flags.s1 = -0x4000;
flags.s2 = -0x100000000LL;
flags.s3 = -0x8000;
/* Extract bitfield value so that bitfield.exp can check if the target
understands signed bitfields. */
i = flags.s3;
break4 ();
/* -1 */
flags.s1 = -1;
flags.s2 = -1;
flags.s3 = -1;
break4 ();
flags.s1 = 0;
flags.s2 = 0;
flags.s3 = 0;
break5 ();
}
int main ()
{
int i;
#ifdef usestubs
set_debug_traps();
breakpoint();
#endif
for (i = 0; i < 5; i += 1)
tester ();
return 0;
}
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