From a0413c9a1c6dcdd6f6bf4bf76a365f9c0bc2e995 Mon Sep 17 00:00:00 2001 From: Alan Mishchenko Date: Thu, 27 Sep 2018 14:49:29 -0700 Subject: Adding command 'cof' to replace node by a constant. --- src/base/abc/abc.h | 1 + src/base/abc/abcFanio.c | 24 +++++++++++ src/base/abci/abc.c | 104 ++++++++++++++++++++++++++++++++++++++++-------- 3 files changed, 112 insertions(+), 17 deletions(-) (limited to 'src/base') diff --git a/src/base/abc/abc.h b/src/base/abc/abc.h index 65461ab0..dd189c6d 100644 --- a/src/base/abc/abc.h +++ b/src/base/abc/abc.h @@ -657,6 +657,7 @@ extern ABC_DLL void Abc_ObjPatchFanoutFanin( Abc_Obj_t * pObj, int extern ABC_DLL Abc_Obj_t * Abc_ObjInsertBetween( Abc_Obj_t * pNodeIn, Abc_Obj_t * pNodeOut, Abc_ObjType_t Type ); extern ABC_DLL void Abc_ObjTransferFanout( Abc_Obj_t * pObjOld, Abc_Obj_t * pObjNew ); extern ABC_DLL void Abc_ObjReplace( Abc_Obj_t * pObjOld, Abc_Obj_t * pObjNew ); +extern ABC_DLL void Abc_ObjReplaceByConstant( Abc_Obj_t * pNode, int fConst1 ); extern ABC_DLL int Abc_ObjFanoutFaninNum( Abc_Obj_t * pFanout, Abc_Obj_t * pFanin ); /*=== abcFanOrder.c ==========================================================*/ extern ABC_DLL int Abc_NtkMakeLegit( Abc_Ntk_t * pNtk ); diff --git a/src/base/abc/abcFanio.c b/src/base/abc/abcFanio.c index caa57a4e..519debb1 100644 --- a/src/base/abc/abcFanio.c +++ b/src/base/abc/abcFanio.c @@ -335,6 +335,30 @@ void Abc_ObjReplace( Abc_Obj_t * pNodeOld, Abc_Obj_t * pNodeNew ) Abc_NtkDeleteObj_rec( pNodeOld, 1 ); } +/**Function************************************************************* + + Synopsis [Replaces a node by a constant.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_ObjReplaceByConstant( Abc_Obj_t * pNode, int fConst1 ) +{ + Abc_Obj_t * pNodeNew; + assert( Abc_NtkIsLogic(pNode->pNtk) ); + assert( !Abc_ObjIsCo(pNode) ); + pNodeNew = fConst1 ? Abc_NtkCreateNodeConst1(pNode->pNtk) : Abc_NtkCreateNodeConst0(pNode->pNtk); + // transfer the fanouts to the old node + Abc_ObjTransferFanout( pNode, pNodeNew ); + // remove the old node + if ( Abc_ObjIsNode(pNode) ) + Abc_NtkDeleteObj_rec( pNode, 1 ); +} + /**Function************************************************************* Synopsis [Returns the index of the fanin in the fanin list of the fanout.] diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c index 069f771a..53a43b25 100644 --- a/src/base/abci/abc.c +++ b/src/base/abci/abc.c @@ -186,6 +186,7 @@ static int Abc_CommandExtSeqDcs ( Abc_Frame_t * pAbc, int argc, cha static int Abc_CommandReach ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandCone ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandNode ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandCof ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandTopmost ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandTopAnd ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandTrim ( Abc_Frame_t * pAbc, int argc, char ** argv ); @@ -880,8 +881,9 @@ void Abc_Init( Abc_Frame_t * pAbc ) Cmd_CommandAdd( pAbc, "Various", "reach", Abc_CommandReach, 0 ); Cmd_CommandAdd( pAbc, "Various", "cone", Abc_CommandCone, 1 ); Cmd_CommandAdd( pAbc, "Various", "node", Abc_CommandNode, 1 ); + Cmd_CommandAdd( pAbc, "Various", "cof", Abc_CommandCof, 1 ); Cmd_CommandAdd( pAbc, "Various", "topmost", Abc_CommandTopmost, 1 ); - Cmd_CommandAdd( pAbc, "Various", "topand", Abc_CommandTopAnd, 1 ); + Cmd_CommandAdd( pAbc, "Various", "topand", Abc_CommandTopAnd, 1 ); Cmd_CommandAdd( pAbc, "Various", "trim", Abc_CommandTrim, 1 ); Cmd_CommandAdd( pAbc, "Various", "short_names", Abc_CommandShortNames, 0 ); Cmd_CommandAdd( pAbc, "Various", "move_names", Abc_CommandMoveNames, 0 ); @@ -3089,21 +3091,18 @@ int Abc_CommandShowBdd( Abc_Frame_t * pAbc, int argc, char ** argv ) if ( fGlobal ) { - if ( !Abc_NtkIsStrash(pNtk) ) - { - Abc_Print( -1, "Visualizing BDDs can only be done for AIGs (run \"strash\").\n" ); - return 1; - } + Abc_Ntk_t * pTemp = Abc_NtkIsStrash(pNtk) ? pNtk : Abc_NtkStrash(pNtk, 0, 0, 0); + Abc_NtkShowBdd( pTemp ); + if ( pTemp != pNtk ) + Abc_NtkDelete( pTemp ); + return 0; } - else + + if ( !Abc_NtkIsBddLogic(pNtk) ) { - if ( !Abc_NtkIsBddLogic(pNtk) ) - { - Abc_Print( -1, "Visualizing BDDs can only be done for logic BDD networks (run \"bdd\").\n" ); - return 1; - } + Abc_Print( -1, "Visualizing BDDs can only be done for logic BDD networks (run \"bdd\").\n" ); + return 1; } - if ( argc > globalUtilOptind + 1 ) { Abc_Print( -1, "Wrong number of auguments.\n" ); @@ -3127,10 +3126,7 @@ int Abc_CommandShowBdd( Abc_Frame_t * pAbc, int argc, char ** argv ) return 1; } } - if ( fGlobal ) - Abc_NtkShowBdd( pNtk ); - else - Abc_NodeShowBdd( pNode ); + Abc_NodeShowBdd( pNode ); return 0; usage: @@ -11243,6 +11239,80 @@ usage: return 1; } +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandCof( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + Abc_Ntk_t * pNtk; + Abc_Obj_t * pNode; + int c, Const; + + pNtk = Abc_FrameReadNtk(pAbc); + // set defaults + Extra_UtilGetoptReset(); + while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + Abc_Print( -1, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsLogic(pNtk) ) + { + Abc_Print( -1, "Currently can only be applied to a logic network.\n" ); + return 1; + } + + if ( argc != globalUtilOptind + 2 ) + { + Abc_Print( -1, "Wrong number of auguments.\n" ); + goto usage; + } + + pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] ); + if ( pNode == NULL ) + { + Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] ); + return 1; + } + Const = atoi( argv[globalUtilOptind+1] ); + if ( Const != 0 && Const != 1 ) + { + Abc_Print( -1, "Constant should be 0 or 1.\n", argv[globalUtilOptind+1] ); + return 1; + } + Abc_ObjReplaceByConstant( pNode, Const ); + return 0; + +usage: + Abc_Print( -2, "usage: cof [-h] \n" ); + Abc_Print( -2, "\t replaces one node in a logic network by constant 0 or 1\n" ); + Abc_Print( -2, "\t-h : print the command usage\n"); + Abc_Print( -2, "\t : the node to replace\n"); + Abc_Print( -2, "\t : the constant to replace the node with\n"); + Abc_Print( -2, "\tname : the node name\n"); + return 1; +} + /**Function************************************************************* -- cgit v1.2.3