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sign extend signed vectors vpiIntVal.

This commit is contained in:
steve 2002-06-14 22:05:28 +00:00
parent a82c178fd9
commit 870c35eece
1 changed files with 14 additions and 2 deletions
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16
vvp/vpi_const.cc
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@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: vpi_const.cc,v 1.16 2002/05/17 04:12:19 steve Exp $"
#ident "$Id: vpi_const.cc,v 1.17 2002/06/14 22:05:28 steve Exp $"
#endif
# include "vpi_priv.h"
@ -309,11 +309,12 @@ static void binary_value(vpiHandle ref, p_vpi_value vp)
case vpiIntVal: {
unsigned val = 0;
unsigned bit_val = 0;
for (unsigned idx = 0 ; idx < rfp->nbits ; idx += 1) {
unsigned nibble = idx/4;
unsigned shift = 2 * (idx%4);
unsigned bit_val = (rfp->bits[nibble] >> shift) & 3;
bit_val = (rfp->bits[nibble] >> shift) & 3;
if (bit_val > 1) {
vp->value.integer = 0;
return;
@ -321,6 +322,14 @@ static void binary_value(vpiHandle ref, p_vpi_value vp)
val |= bit_val << idx;
}
}
/* sign extend */
if (rfp->signed_flag) {
for (unsigned idx = rfp->nbits; idx <sizeof(int)*8; idx++) {
val |= bit_val << idx;
}
}
vp->value.integer = val;
break;
}
@ -504,6 +513,9 @@ vpiHandle vpip_make_dec_const(int value)
/*
* $Log: vpi_const.cc,v $
* Revision 1.17 2002/06/14 22:05:28 steve
* sign extend signed vectors vpiIntVal.
*
* Revision 1.16 2002/05/17 04:12:19 steve
* Rewire vpiMemory and vpiMemoryWord handles to
* support proper iteration of words, and the