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

Properly initialize unconnected shift inputs.

This commit is contained in:
steve 2001-07-06 05:02:43 +00:00
parent 370549a19a
commit 1e231c3338
1 changed files with 21 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
vvp/compile.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: compile.cc,v 1.84 2001/07/06 04:46:44 steve Exp $"
#ident "$Id: compile.cc,v 1.85 2001/07/06 05:02:43 steve Exp $"
#endif
# include "arith.h"
@ -564,6 +564,11 @@ void compile_cmp_gt(char*label, long wid, unsigned argc, struct symb_s*argv)
}
/*
* A .shift/l statement creates an array of functors for the
* width. The 0 input is the data vector to be shifted and the 1 input
* is the amount of the shift. An unconnected shift amount is set to 0.
*/
void compile_shiftl(char*label, long wid, unsigned argc, struct symb_s*argv)
{
assert( wid > 0 );
@ -575,6 +580,13 @@ void compile_shiftl(char*label, long wid, unsigned argc, struct symb_s*argv)
return;
}
if (argc > (wid*2)) {
fprintf(stderr, "%s; .shift/l has too many symbols\n", label);
compile_errors += 1;
free(label);
return;
}
vvp_ipoint_t fdx = functor_allocate(wid);
define_functor_symbol(label, fdx);
@ -584,7 +596,11 @@ void compile_shiftl(char*label, long wid, unsigned argc, struct symb_s*argv)
vvp_ipoint_t ptr = ipoint_index(fdx,idx);
functor_t obj = functor_index(ptr);
obj->ival = 0xaa;
if ((wid+idx) >= argc)
obj->ival = 0x02;
else
obj->ival = 0x0a;
obj->oval = 2;
obj->odrive0 = 6;
obj->odrive1 = 6;
@ -1499,6 +1515,9 @@ vvp_ipoint_t debug_lookup_functor(const char*name)
/*
* $Log: compile.cc,v $
* Revision 1.85 2001/07/06 05:02:43 steve
* Properly initialize unconnected shift inputs.
*
* Revision 1.84 2001/07/06 04:46:44 steve
* Add structural left shift (.shift/l)
*