Constant values have drive strengths.
This commit is contained in:
steve
parent
03d188fc52
commit
6be3be0f16
62
t-dll.cc
62
t-dll.cc
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@ -17,7 +17,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#if !defined(WINNT) && !defined(macintosh)
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#ident "$Id: t-dll.cc,v 1.75 2002/01/03 04:19:01 steve Exp $"
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#ident "$Id: t-dll.cc,v 1.76 2002/01/06 03:15:43 steve Exp $"
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#endif
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# include "config.h"
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@ -96,6 +96,45 @@ inline const char*dlerror(void)
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static struct dll_target dll_target_obj;
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static void drive_from_link(const Link&lnk, ivl_drive_t&drv0, ivl_drive_t&drv1)
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{
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switch (lnk.drive0()) {
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case Link::HIGHZ:
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drv0 = IVL_DR_HiZ;
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break;
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case Link::WEAK:
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drv0 = IVL_DR_WEAK;
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break;
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case Link::PULL:
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drv0 = IVL_DR_PULL;
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break;
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case Link::STRONG:
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drv0 = IVL_DR_STRONG;
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break;
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case Link::SUPPLY:
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drv0 = IVL_DR_SUPPLY;
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break;
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}
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switch (lnk.drive1()) {
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case Link::HIGHZ:
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drv1 = IVL_DR_HiZ;
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break;
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case Link::WEAK:
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drv1 = IVL_DR_WEAK;
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break;
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case Link::PULL:
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drv1 = IVL_DR_PULL;
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break;
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case Link::STRONG:
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drv1 = IVL_DR_STRONG;
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break;
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case Link::SUPPLY:
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drv1 = IVL_DR_SUPPLY;
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break;
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}
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}
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/*
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* This function locates an ivl_scope_t object that matches the
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* NetScope object. The search works by looking for the parent scope,
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@ -265,7 +304,8 @@ static ivl_nexus_ptr_t nexus_log_add(ivl_nexus_t nex,
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return nex->ptrs_ + top - 1;
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}
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static void nexus_con_add(ivl_nexus_t nex, ivl_net_const_t net, unsigned pin)
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static void nexus_con_add(ivl_nexus_t nex, ivl_net_const_t net, unsigned pin,
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ivl_drive_t drive0, ivl_drive_t drive1)
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{
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unsigned top = nex->nptr_ + 1;
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nex->ptrs_ = (struct ivl_nexus_ptr_s*)
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@ -273,8 +313,8 @@ static void nexus_con_add(ivl_nexus_t nex, ivl_net_const_t net, unsigned pin)
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nex->nptr_ = top;
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nex->ptrs_[top-1].type_= __NEXUS_PTR_CON;
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nex->ptrs_[top-1].drive0 = IVL_DR_STRONG;
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nex->ptrs_[top-1].drive1 = IVL_DR_STRONG;
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nex->ptrs_[top-1].drive0 = drive0;
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nex->ptrs_[top-1].drive1 = drive1;
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nex->ptrs_[top-1].pin_ = pin;
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nex->ptrs_[top-1].l.con= net;
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}
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@ -1533,20 +1573,27 @@ bool dll_target::net_const(const NetConst*net)
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case can be handled more efficiently without allocating
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array space. */
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if (obj->width_ == 1) {
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ivl_drive_t drv0, drv1;
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drive_from_link(net->pin(0), drv0, drv1);
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const Nexus*nex = net->pin(0).nexus();
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assert(nex->t_cookie());
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obj->n.pin_ = (ivl_nexus_t) nex->t_cookie();
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nexus_con_add(obj->n.pin_, obj, 0);
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nexus_con_add(obj->n.pin_, obj, 0, drv0, drv1);
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} else {
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obj->n.pins_ = new ivl_nexus_t[obj->width_];
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for (unsigned idx = 0 ; idx < obj->width_ ; idx += 1) {
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if (! net->pin(idx).is_linked())
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continue;
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ivl_drive_t drv0, drv1;
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drive_from_link(net->pin(idx), drv0, drv1);
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const Nexus*nex = net->pin(idx).nexus();
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assert(nex->t_cookie());
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obj->n.pins_[idx] = (ivl_nexus_t) nex->t_cookie();
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nexus_con_add(obj->n.pins_[idx], obj, idx);
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nexus_con_add(obj->n.pins_[idx], obj, idx, drv0, drv1);
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}
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}
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@ -1790,6 +1837,9 @@ extern const struct target tgt_dll = { "dll", &dll_target_obj };
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/*
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* $Log: t-dll.cc,v $
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* Revision 1.76 2002/01/06 03:15:43 steve
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* Constant values have drive strengths.
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*
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* Revision 1.75 2002/01/03 04:19:01 steve
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* Add structural modulus support down to vvp.
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*
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@ -17,7 +17,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#if !defined(WINNT)
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#ident "$Id: vvp_scope.c,v 1.61 2002/01/03 04:19:01 steve Exp $"
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#ident "$Id: vvp_scope.c,v 1.62 2002/01/06 03:15:43 steve Exp $"
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#endif
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# include "vvp_priv.h"
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@ -151,6 +151,31 @@ ivl_signal_type_t signal_type_of_nexus(ivl_nexus_t nex)
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return out;
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}
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const char*drive_string(ivl_drive_t drive)
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{
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switch (drive) {
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case IVL_DR_HiZ:
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return "";
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case IVL_DR_SMALL:
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return "sm";
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case IVL_DR_MEDIUM:
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return "me";
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case IVL_DR_WEAK:
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return "we";
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case IVL_DR_LARGE:
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return "la";
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case IVL_DR_PULL:
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return "pu";
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case IVL_DR_STRONG:
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return "";
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case IVL_DR_SUPPLY:
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return "su";
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}
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return "";
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}
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/*
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* The draw_scope function draws the major functional items within a
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* scope. This includes the scopes themselves, of course. All the
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@ -224,7 +249,20 @@ static const char* draw_net_input_drive(ivl_nexus_t nex, ivl_nexus_ptr_t nptr)
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cptr = ivl_nexus_ptr_con(nptr);
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if (cptr) {
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const char*bits = ivl_const_bits(cptr);
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sprintf(result, "C<%c>", bits[nptr_pin]);
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ivl_drive_t drive;
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switch (bits[nptr_pin]) {
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case '0':
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drive = ivl_nexus_ptr_drive0(nptr);
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sprintf(result, "C<%s0>", drive_string(drive));
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break;
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case '1':
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drive = ivl_nexus_ptr_drive1(nptr);
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sprintf(result, "C<%s1>", drive_string(drive));
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break;
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default:
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sprintf(result, "C<%c>", bits[nptr_pin]);
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}
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return result;
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}
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@ -1326,6 +1364,9 @@ int draw_scope(ivl_scope_t net, ivl_scope_t parent)
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/*
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* $Log: vvp_scope.c,v $
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* Revision 1.62 2002/01/06 03:15:43 steve
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* Constant values have drive strengths.
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*
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* Revision 1.61 2002/01/03 04:19:01 steve
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* Add structural modulus support down to vvp.
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*
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@ -1371,58 +1412,5 @@ int draw_scope(ivl_scope_t net, ivl_scope_t parent)
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*
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* Revision 1.47 2001/09/15 18:27:04 steve
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* Make configure detect malloc.h
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*
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* Revision 1.46 2001/09/14 04:15:46 steve
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* Generate code for identity comparators.
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*
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* Revision 1.45 2001/08/10 00:40:45 steve
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* tgt-vvp generates code that skips nets as inputs.
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*
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* Revision 1.44 2001/08/03 17:06:10 steve
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* More detailed messages about unsupported things.
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*
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* Revision 1.43 2001/07/28 03:18:50 steve
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* Generate constant symbols for supply nets.
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*
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* Revision 1.42 2001/07/22 21:31:14 steve
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* supply signals give input values.
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*
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* Revision 1.41 2001/07/18 02:44:39 steve
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* Relax driver limit from 64 to forever (Stephan Boettcher)
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*
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* Revision 1.40 2001/07/16 18:31:49 steve
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* Nest resolvers when there are lots of drivers (Stephan Boettcher)
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*
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* Revision 1.39 2001/07/09 15:38:35 steve
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* Properly step through wide inputs. (Stephan Boettcher)
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*
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* Revision 1.38 2001/07/07 03:01:06 steve
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* Generate code for right shift.
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*
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* Revision 1.37 2001/07/06 04:48:04 steve
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* Generate code for structural left shift.
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*
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* Revision 1.36 2001/06/19 03:01:10 steve
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* Add structural EEQ gates (Stephan Boettcher)
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*
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* Revision 1.35 2001/06/18 03:10:34 steve
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* 1. Logic with more than 4 inputs
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* 2. Id and name mangling
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* 3. A memory leak in draw_net_in_scope()
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* (Stephan Boettcher)
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*
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* Revision 1.34 2001/06/16 23:45:05 steve
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* Add support for structural multiply in t-dll.
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* Add code generators and vvp support for both
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* structural and behavioral multiply.
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*
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* Revision 1.33 2001/06/16 02:41:42 steve
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* Generate code to support memory access in continuous
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* assignment statements. (Stephan Boettcher)
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*
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* Revision 1.32 2001/06/15 04:14:19 steve
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* Generate vvp code for GT and GE comparisons.
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*
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* Revision 1.31 2001/06/07 04:20:10 steve
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*/
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