From 5eedc74a153fd2242a56f06f208bee7e3b0dfaf7 Mon Sep 17 00:00:00 2001 From: Alan Mishchenko Date: Mon, 10 Dec 2012 00:59:54 -0800 Subject: Adding box library. --- src/map/if/ifLibLut.c | 346 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 346 insertions(+) create mode 100644 src/map/if/ifLibLut.c (limited to 'src/map/if/ifLibLut.c') diff --git a/src/map/if/ifLibLut.c b/src/map/if/ifLibLut.c new file mode 100644 index 00000000..b1e6c680 --- /dev/null +++ b/src/map/if/ifLibLut.c @@ -0,0 +1,346 @@ +/**CFile**************************************************************** + + FileName [ifLibLut.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [FPGA mapping based on priority cuts.] + + Synopsis [LUT library.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - November 21, 2006.] + + Revision [$Id: ifLibLut.c,v 1.00 2006/11/21 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "if.h" + +ABC_NAMESPACE_IMPL_START + + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static inline char * If_UtilStrsav( char *s ) { return !s ? s : strcpy(ABC_ALLOC(char, strlen(s)+1), s); } + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Reads the description of LUTs from the LUT library file.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +If_Lib_t * If_LutLibRead( char * FileName ) +{ + char pBuffer[1000], * pToken; + If_Lib_t * p; + FILE * pFile; + int i, k; + + pFile = fopen( FileName, "r" ); + if ( pFile == NULL ) + { + Abc_Print( -1, "Cannot open LUT library file \"%s\".\n", FileName ); + return NULL; + } + + p = ABC_ALLOC( If_Lib_t, 1 ); + memset( p, 0, sizeof(If_Lib_t) ); + p->pName = If_UtilStrsav( FileName ); + + i = 1; + while ( fgets( pBuffer, 1000, pFile ) != NULL ) + { + pToken = strtok( pBuffer, " \t\n" ); + if ( pToken == NULL ) + continue; + if ( pToken[0] == '#' ) + continue; + if ( i != atoi(pToken) ) + { + Abc_Print( 1, "Error in the LUT library file \"%s\".\n", FileName ); + ABC_FREE( p->pName ); + ABC_FREE( p ); + return NULL; + } + + // read area + pToken = strtok( NULL, " \t\n" ); + p->pLutAreas[i] = (float)atof(pToken); + + // read delays + k = 0; + while ( (pToken = strtok( NULL, " \t\n" )) ) + p->pLutDelays[i][k++] = (float)atof(pToken); + + // check for out-of-bound + if ( k > i ) + { + ABC_FREE( p->pName ); + ABC_FREE( p ); + Abc_Print( 1, "LUT %d has too many pins (%d). Max allowed is %d.\n", i, k, i ); + return NULL; + } + + // check if var delays are specified + if ( k > 1 ) + p->fVarPinDelays = 1; + + if ( i == IF_MAX_LUTSIZE ) + { + ABC_FREE( p->pName ); + ABC_FREE( p ); + Abc_Print( 1, "Skipping LUTs of size more than %d.\n", i ); + return NULL; + } + i++; + } + p->LutMax = i-1; + + // check the library + if ( p->fVarPinDelays ) + { + for ( i = 1; i <= p->LutMax; i++ ) + for ( k = 0; k < i; k++ ) + { + if ( p->pLutDelays[i][k] <= 0.0 ) + Abc_Print( 0, "Pin %d of LUT %d has delay %f. Pin delays should be non-negative numbers. Technology mapping may not work correctly.\n", + k, i, p->pLutDelays[i][k] ); + if ( k && p->pLutDelays[i][k-1] > p->pLutDelays[i][k] ) + Abc_Print( 0, "Pin %d of LUT %d has delay %f. Pin %d of LUT %d has delay %f. Pin delays should be in non-decreasing order. Technology mapping may not work correctly.\n", + k-1, i, p->pLutDelays[i][k-1], + k, i, p->pLutDelays[i][k] ); + } + } + else + { + for ( i = 1; i <= p->LutMax; i++ ) + { + if ( p->pLutDelays[i][0] <= 0.0 ) + Abc_Print( 0, "LUT %d has delay %f. Pin delays should be non-negative numbers. Technology mapping may not work correctly.\n", + i, p->pLutDelays[i][0] ); + } + } + + return p; +} + +/**Function************************************************************* + + Synopsis [Duplicates the LUT library.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +If_Lib_t * If_LutLibDup( If_Lib_t * p ) +{ + If_Lib_t * pNew; + pNew = ABC_ALLOC( If_Lib_t, 1 ); + *pNew = *p; + pNew->pName = If_UtilStrsav( pNew->pName ); + return pNew; +} + +/**Function************************************************************* + + Synopsis [Frees the LUT library.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void If_LutLibFree( If_Lib_t * pLutLib ) +{ + if ( pLutLib == NULL ) + return; + ABC_FREE( pLutLib->pName ); + ABC_FREE( pLutLib ); +} + + +/**Function************************************************************* + + Synopsis [Prints the LUT library.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void If_LutLibPrint( If_Lib_t * pLutLib ) +{ + int i, k; + Abc_Print( 1, "# The area/delay of k-variable LUTs:\n" ); + Abc_Print( 1, "# k area delay\n" ); + if ( pLutLib->fVarPinDelays ) + { + for ( i = 1; i <= pLutLib->LutMax; i++ ) + { + Abc_Print( 1, "%d %7.2f ", i, pLutLib->pLutAreas[i] ); + for ( k = 0; k < i; k++ ) + Abc_Print( 1, " %7.2f", pLutLib->pLutDelays[i][k] ); + Abc_Print( 1, "\n" ); + } + } + else + for ( i = 1; i <= pLutLib->LutMax; i++ ) + Abc_Print( 1, "%d %7.2f %7.2f\n", i, pLutLib->pLutAreas[i], pLutLib->pLutDelays[i][0] ); +} + +/**Function************************************************************* + + Synopsis [Returns 1 if the delays are discrete.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int If_LutLibDelaysAreDiscrete( If_Lib_t * pLutLib ) +{ + float Delay; + int i; + for ( i = 1; i <= pLutLib->LutMax; i++ ) + { + Delay = pLutLib->pLutDelays[i][0]; + if ( ((float)((int)Delay)) != Delay ) + return 0; + } + return 1; +} + +/**Function************************************************************* + + Synopsis [Returns 1 if the delays are discrete.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int If_LutLibDelaysAreDifferent( If_Lib_t * pLutLib ) +{ + int i, k; + float Delay = pLutLib->pLutDelays[1][0]; + if ( pLutLib->fVarPinDelays ) + { + for ( i = 2; i <= pLutLib->LutMax; i++ ) + for ( k = 0; k < i; k++ ) + if ( pLutLib->pLutDelays[i][k] != Delay ) + return 1; + } + else + { + for ( i = 2; i <= pLutLib->LutMax; i++ ) + if ( pLutLib->pLutDelays[i][0] != Delay ) + return 1; + } + return 0; +} + +/**Function************************************************************* + + Synopsis [Sets simple LUT library.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +If_Lib_t * If_LutLibSetSimple( int nLutSize ) +{ + If_Lib_t s_LutLib10= { "lutlib",10, 0, {0,1,1,1,1,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1},{1},{1},{1},{1}} }; + If_Lib_t s_LutLib9 = { "lutlib", 9, 0, {0,1,1,1,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1},{1},{1},{1}} }; + If_Lib_t s_LutLib8 = { "lutlib", 8, 0, {0,1,1,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1},{1},{1}} }; + If_Lib_t s_LutLib7 = { "lutlib", 7, 0, {0,1,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1},{1}} }; + If_Lib_t s_LutLib6 = { "lutlib", 6, 0, {0,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1}} }; + If_Lib_t s_LutLib5 = { "lutlib", 5, 0, {0,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1}} }; + If_Lib_t s_LutLib4 = { "lutlib", 4, 0, {0,1,1,1,1}, {{0},{1},{1},{1},{1}} }; + If_Lib_t s_LutLib3 = { "lutlib", 3, 0, {0,1,1,1}, {{0},{1},{1},{1}} }; + If_Lib_t * pLutLib; + assert( nLutSize >= 3 && nLutSize <= 10 ); + switch ( nLutSize ) + { + case 3: pLutLib = &s_LutLib3; break; + case 4: pLutLib = &s_LutLib4; break; + case 5: pLutLib = &s_LutLib5; break; + case 6: pLutLib = &s_LutLib6; break; + case 7: pLutLib = &s_LutLib7; break; + case 8: pLutLib = &s_LutLib8; break; + case 9: pLutLib = &s_LutLib9; break; + case 10: pLutLib = &s_LutLib10; break; + default: pLutLib = NULL; break; + } + if ( pLutLib == NULL ) + return NULL; + return If_LutLibDup(pLutLib); +} + +/**Function************************************************************* + + Synopsis [Gets the delay of the fastest pin.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +float If_LutLibFastestPinDelay( If_Lib_t * p ) +{ + return !p? 1.0 : p->pLutDelays[p->LutMax][0]; +} + +/**Function************************************************************* + + Synopsis [Gets the delay of the slowest pin.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +float If_LutLibSlowestPinDelay( If_Lib_t * p ) +{ + return !p? 1.0 : (p->fVarPinDelays? p->pLutDelays[p->LutMax][p->LutMax-1]: p->pLutDelays[p->LutMax][0]); +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + -- cgit v1.2.3