luke
/
iverilog
mirror of https://github.com/steveicarus/iverilog.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Handle vectors pulled out of a constant bit.

This commit is contained in:
steve 2001-03-23 01:11:06 +00:00
parent c2dc3fe5c3
commit b2a136e07e
1 changed files with 26 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
vvp/vthread.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: vthread.cc,v 1.7 2001/03/22 05:08:00 steve Exp $"
#ident "$Id: vthread.cc,v 1.8 2001/03/23 01:11:06 steve Exp $"
#endif
# include "vthread.h"
@ -26,6 +26,7 @@
# include "functor.h"
# include "vpi_priv.h"
# include <malloc.h>
# include <string.h>
# include <assert.h>
struct vthread_s {
@ -35,6 +36,18 @@ struct vthread_s {
unsigned short nbits;
};
static void thr_check_addr(struct vthread_s*thr, unsigned addr)
{
if (addr < thr->nbits)
return;
assert(addr < 0x10000);
while (thr->nbits <= addr) {
thr->bits = (unsigned char*)realloc(thr->bits, thr->nbits/4 + 16);
memset(thr->bits + thr->nbits/4, 0xaa, 16);
thr->nbits += 16*4;
}
}
static inline unsigned thr_get_bit(struct vthread_s*thr, unsigned addr)
{
assert(addr < thr->nbits);
@ -46,7 +59,7 @@ static inline unsigned thr_get_bit(struct vthread_s*thr, unsigned addr)
static inline void thr_put_bit(struct vthread_s*thr,
unsigned addr, unsigned val)
{
assert(addr < thr->nbits);
thr_check_addr(thr, addr);
unsigned idx = addr % 4;
addr /= 4;
unsigned mask = 3 << (idx*2);
@ -115,9 +128,12 @@ bool of_CMPU(vthread_t thr, vvp_code_t cp)
unsigned eeq = 1;
unsigned lt = 2;
unsigned idx1 = cp->bit_idx1;
unsigned idx2 = cp->bit_idx2;
for (unsigned idx = 0 ; idx < cp->number ; idx += 1) {
unsigned lv = thr_get_bit(thr, cp->bit_idx1+idx);
unsigned rv = thr_get_bit(thr, cp->bit_idx2+idx);
unsigned lv = thr_get_bit(thr, idx1);
unsigned rv = thr_get_bit(thr, idx2);
if (lv != rv)
eeq = 0;
@ -125,6 +141,9 @@ bool of_CMPU(vthread_t thr, vvp_code_t cp)
eq = 0;
if ((lv == 1) && (rv != 1))
eq = 0;
if (idx1 >= 4) idx1 += 1;
if (idx2 >= 4) idx2 += 1;
}
thr_put_bit(thr, 4, eq);
@ -239,6 +258,9 @@ bool of_VPI_CALL(vthread_t thr, vvp_code_t cp)
/*
* $Log: vthread.cc,v $
* Revision 1.8 2001/03/23 01:11:06 steve
* Handle vectors pulled out of a constant bit.
*
* Revision 1.7 2001/03/22 05:08:00 steve
* implement %load, %inv, %jum/0 and %cmp/u
*