[sv与c] linux环境下，通过PLI 获取到模块-实例的所有信息

于 2023-03-13 17:17:49 发布
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文章标签： linux c语言 c++
原文链接：https://blog.youkuaiyun.com/sxj731533730/article/details/88698648
版权 
 
 
#include "vpi_user.h"
 
/*****************************************************************************
 * FUNCTION PROTOTYPES
 *****************************************************************************/
static void vpit_DumpPortDetails( vpiHandle port_handle );
static void vpit_DumpNetDetails( vpiHandle net_handle );
static void vpit_DumpRegDetails( vpiHandle reg_handle );
 
/*****************************************************************************
 * FUNCTION DEFINITIONS
 *****************************************************************************/
/*****************************************************************************
 *
 * vpit_CheckError()
 *
 * Checks if an error was reported by the last vpi function called
 * and, if so, prints it to the specified output file.
 *
 *****************************************************************************/
static int vpit_CheckError( void )
{
    int              error_code;
    s_vpi_error_info error_info;
 
    error_code = vpi_chk_error( &error_info );
    if ( error_code && error_info.message ) {
        vpi_printf( "  %s\n", error_info.message );
    }
 
    return error_code;
}
 
/*****************************************************************************
 *
 * vpit_GetDelayModeStr()
 *
 * Get the string representation of the delay mode.
 *
 *****************************************************************************/
static char * vpit_GetDelayModeStr( int delay_mode )
{
    char * tmpstr;
 
    switch ( delay_mode ) {
      case vpiDelayModeNone:
        tmpstr = "vpiDelayModeNone";
        break;
      case vpiDelayModePath:
        tmpstr = "vpiDelayModePath";
        break;
      case vpiDelayModeDistrib:
        tmpstr = "vpiDelayModeDistrib";
        break;
      case vpiDelayModeUnit:
        tmpstr = "vpiDelayModeUnit";
        break;
      case vpiDelayModeZero:
        tmpstr = "vpiDelayModeZero";
        break;
      default:
        tmpstr = "UNKNOWN";
        break;
    }
 
    return tmpstr;
}
 
/*****************************************************************************
 *
 * vpit_GetTimeUnitStr()
 *
 * Get the string representation of the time unit
 *
 *****************************************************************************/
static char * vpit_GetTimeUnitStr( int time_unit )
{
    char * tmpstr;
 
    switch ( time_unit ) {
      case 2:
        tmpstr = "100 s";
        break;
      case 1:
        tmpstr = "10 s";
        break;
      case 0:
        tmpstr = "1 s";
        break;
      case -1:
        tmpstr = "100 ms";
        break;
      case -2:
        tmpstr = "10 ms";
        break;
      case -3:
        tmpstr = "1 ms";
        break;
      case -4:
        tmpstr = "100 us";
        break;
      case -5:
        tmpstr = "10 us";
        break;
      case -6:
        tmpstr = "1 us";
        break;
      case -7:
        tmpstr = "100 ns";
        break;
      case -8:
        tmpstr = "10 ns";
        break;
      case -9:
        tmpstr = "1 ns";
        break;
      case -10:
        tmpstr = "100 ps";
        break;
      case -11:
        tmpstr = "10 ps";
        break;
      case -12:
        tmpstr = "1 ps";
        break;
      case -13:
        tmpstr = "100 fs";
        break;
      case -14:
        tmpstr = "10 fs";
        break;
      case -15:
        tmpstr = "1 fs";
        break;
      default:
        tmpstr = "UNKNOWN";
        break;
    }
 
    return tmpstr;
}
 
/*****************************************************************************
 *
 * vpit_GetDirectionStr()
 *
 * Get the string representation of the direction.
 *
 *****************************************************************************/
static char * vpit_GetDirectionStr( int direction )
{
    char * tmpstr;
 
    switch ( direction ) {
      case vpiInput:
        tmpstr = "vpiInput";
        break;
      case vpiOutput:
        tmpstr = "vpiOutput";
        break;
      case vpiInout:
        tmpstr = "vpiInout";
        break;
      case vpiMixedIO:
        tmpstr = "vpiMixedIO";
        break;
      case vpiNoDirection:
        tmpstr = "vpiNoDirection";
        break;
      default:
        tmpstr = "UNKNOWN";
        break;
    }
 
    return tmpstr;
}
 
/*****************************************************************************
 *
 * vpit_DumpPortBitInfo()
 *
 * Print info about specified port's bits.
 *
 *****************************************************************************/
void vpit_DumpPortBitInfo( vpiHandle port_handle )
{
    int         bitnum = 0;
    int         error_code;
    vpiHandle   pbiter_handle;
    vpiHandle   portbit_handle;
    vpiHandle   tmphandle;
 
    pbiter_handle = vpi_iterate( vpiBit, port_handle );
    error_code = vpit_CheckError();
    if ( ! error_code && pbiter_handle ) {
        portbit_handle = vpi_scan( pbiter_handle );
        error_code = vpit_CheckError();
        while ( portbit_handle ) {
            bitnum++;
            vpi_printf( "\n  Port Bit #%d: ----------\n", bitnum );
 
            vpit_DumpPortDetails( portbit_handle );
 
            tmphandle = vpi_handle( vpiParent, portbit_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "    Parent        is %s",
                           vpi_get_str( vpiName, tmphandle ) );
                vpi_printf( " of type %s (%d).\n",
                           vpi_get_str( vpiType, tmphandle),
                           vpi_get( vpiType, tmphandle ) );
                vpi_free_object( tmphandle );
            }
 
            vpi_free_object( portbit_handle );
            portbit_handle = vpi_scan( pbiter_handle );
            error_code = vpit_CheckError();
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpPortDetails()
 *
 * Print detailed info about specified port.
 *
 *****************************************************************************/
static void vpit_DumpPortDetails( vpiHandle port_handle )
{
    char      * tmpstr;
    int         error_code;
    int         is_vector;
    int         objtype;
    int         tmpint;
    vpiHandle   tmphandle;
 
    objtype = vpi_get( vpiType, port_handle );
 
    if ( objtype == vpiPort ) {
        tmpstr = vpi_get_str( vpiName, port_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            vpi_printf( "\n  Port name is %s.\n",
                       tmpstr ? tmpstr : "<NULL>" );
        }
    }
 
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Type          is %s (%d).\n",
                   vpi_get_str( vpiType, port_handle ), objtype );
    }
 
    tmpint = vpi_get( vpiDirection, port_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Direction     is %s.\n",
                   vpit_GetDirectionStr(tmpint) );
    }
 
    if ( objtype == vpiPort ) {
        tmpint = vpi_get( vpiPortIndex, port_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            vpi_printf( "    Port Index    is %d.\n", tmpint );
        }
    }
 
    tmpint = vpi_get( vpiLineNo, port_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Line No       is %d.\n", tmpint );
    }
 
    tmpstr = vpi_get_str( vpiFile, port_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    File          is %s.\n", tmpstr );
    }
 
    tmpint = vpi_get( vpiScalar, port_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Scalar        is %s.\n",
                   tmpint ? "TRUE" : "FALSE" );
    }
 
    tmpint = vpi_get( vpiSize, port_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Size          is %d.\n", tmpint );
    }
 
    is_vector = vpi_get( vpiVector, port_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Vector        is %s.\n",
                   is_vector ? "TRUE" : "FALSE" );
    }
 
    if ( objtype == vpiPort ) {
        tmphandle = vpi_handle( vpiModule, port_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            vpi_printf( "    Module        is %s",
                       vpi_get_str( vpiName, tmphandle ) );
            vpi_printf( " of type %s.\n",
                       vpi_get_str( vpiType, tmphandle ) );
            vpi_free_object( tmphandle );
        }
    }
 
    if ( is_vector ) {
        vpit_DumpPortBitInfo( port_handle );
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpPortInfo()
 *
 * Print info about specified module's ports.
 *
 *****************************************************************************/
static void vpit_DumpPortInfo( vpiHandle mod_handle )
{
    int         error_code;
    vpiHandle   piter_handle;
    vpiHandle   port_handle;
 
    piter_handle = vpi_iterate( vpiPort, mod_handle );
    error_code  = vpit_CheckError();
    if ( ! error_code && piter_handle ) {
        port_handle = vpi_scan( piter_handle );
        error_code = vpit_CheckError();
        while ( port_handle ) {
            vpit_DumpPortDetails( port_handle );
            vpi_free_object( port_handle );
            port_handle = vpi_scan( piter_handle );
            error_code = vpit_CheckError();
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpNetBitInfo()
 *
 * Print info about specified net's bits.
 *
 *****************************************************************************/
static void vpit_DumpNetBitInfo( vpiHandle net_handle )
{
    int         bitnum = 0;
    int         error_code;
    int         objtype;
    vpiHandle   nbiter_handle;
    vpiHandle   netbit_handle;
    vpiHandle   tmphandle;
 
    nbiter_handle = vpi_iterate( vpiBit, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code && nbiter_handle ) {
        netbit_handle = vpi_scan( nbiter_handle );
        error_code = vpit_CheckError();
        while ( netbit_handle ) {
            bitnum++;
            vpi_printf( "\n  Net Bit #%d: ----------\n", bitnum );
 
            vpit_DumpNetDetails( netbit_handle );
 
            tmphandle = vpi_handle( vpiParent, netbit_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                objtype = vpi_get( vpiType, tmphandle );
                vpi_printf( "    Parent        is %s",
                           vpi_get_str( vpiName, tmphandle ) );
                vpi_printf( " of type %s (%d).\n",
                           vpi_get_str( vpiType, tmphandle ), objtype );
                vpi_free_object( tmphandle );
            }
 
            vpi_free_object( netbit_handle );
            netbit_handle = vpi_scan( nbiter_handle );
            error_code = vpit_CheckError();
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpNetDetails()
 *
 * Print detailed info about specified net.
 *
 *****************************************************************************/
static void vpit_DumpNetDetails( vpiHandle net_handle )
{
    char      * tmpstr;
    vpiHandle   tmphandle;
    int         error_code;
    int         is_vector;
    int         objtype;
    int         tmpint;
    s_vpi_value value_info;
 
    tmpstr = vpi_get_str( vpiName, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "\n  Net name is %s.\n",
                   tmpstr ? tmpstr : "<NULL>" );
    }
 
    objtype = vpi_get( vpiType, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Type          is %s (%d).\n",
                   vpi_get_str( vpiType, net_handle ), objtype );
    }
 
    tmpint = vpi_get( vpiLineNo, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Line No       is %d.\n", tmpint );
    }
 
    tmpstr = vpi_get_str( vpiFile, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    File          is %s.\n", tmpstr );
    }
 
    tmpstr = vpi_get_str( vpiFullName, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Full Name     is %s.\n",
                   tmpstr ? tmpstr : "<NULL>" );
    }
 
    tmpint = vpi_get( vpiNetType, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Net Type      is %s.\n",
                   vpi_get_str( vpiNetType, net_handle ) );
    }
 
    tmpint = vpi_get( vpiScalar, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Scalar        is %s.\n",
                   tmpint ? "TRUE" : "FALSE" );
    }
 
    tmpint = vpi_get( vpiSize, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Size          is %d.\n", tmpint );
    }
 
    is_vector = vpi_get( vpiVector, net_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Vector        is %s.\n",
                   is_vector ? "TRUE" : "FALSE" );
    }
 
    if ( is_vector ) {
        tmphandle = vpi_handle( vpiLeftRange, net_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            value_info.format = vpiIntVal;
            vpi_get_value( tmphandle, &value_info );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "    Left  Range   is %d.\n",
                           value_info.value.integer );
            }
            vpi_free_object( tmphandle );
        }
 
        tmphandle = vpi_handle( vpiRightRange, net_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            value_info.format = vpiIntVal;
            vpi_get_value( tmphandle, &value_info );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "    Right Range   is %d.\n",
                           value_info.value.integer );
            }
            vpi_free_object( tmphandle );
        }
    }
 
    if ( objtype == vpiNetBit ) {
        tmphandle = vpi_handle( vpiIndex, net_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            value_info.format = vpiIntVal;
            vpi_get_value( tmphandle, &value_info );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "    Index value   is %d.\n",
                           value_info.value.integer );
            }
            vpi_free_object( tmphandle );
        }
    } else {
        tmphandle = vpi_handle( vpiModule, net_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            vpi_printf( "    Module        is %s",
                       vpi_get_str( vpiName, tmphandle ) );
            vpi_printf( " of type %s (%d).\n",
                       vpi_get_str( vpiType, tmphandle ),
                       vpi_get( vpiType, tmphandle ) );
            vpi_free_object( tmphandle );
        }
        if ( is_vector ) {
            vpit_DumpNetBitInfo( net_handle );
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpNetInfo()
 *
 * Print info about specified module's nets.
 *
 *****************************************************************************/
static void vpit_DumpNetInfo( vpiHandle mod_handle )
{
    int         error_code;
    vpiHandle   niter_handle;
    vpiHandle   net_handle;
 
    niter_handle = vpi_iterate( vpiNet, mod_handle );
    error_code  = vpit_CheckError();
    if ( ! error_code && niter_handle ) {
        net_handle = vpi_scan( niter_handle );
        error_code = vpit_CheckError();
        while ( net_handle ) {
            vpit_DumpNetDetails( net_handle );
            vpi_free_object( net_handle );
            net_handle = vpi_scan( niter_handle );
            error_code = vpit_CheckError();
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpRegBitInfo()
 *
 * Print info about specified reg's bits.
 *
 *****************************************************************************/
static void vpit_DumpRegBitInfo( vpiHandle reg_handle )
{
    int         bitnum = 0;
    int         error_code;
    int         objtype;
    vpiHandle   rbiter_handle;
    vpiHandle   regbit_handle;
    vpiHandle   tmphandle;
 
    rbiter_handle = vpi_iterate( vpiBit, reg_handle );
    error_code = vpit_CheckError();
    if ( ! error_code && rbiter_handle ) {
        regbit_handle = vpi_scan( rbiter_handle );
        error_code = vpit_CheckError();
        while ( regbit_handle ) {
            bitnum++;
            vpi_printf( "\n  Reg Bit #%d: ----------\n", bitnum );
 
            vpit_DumpRegDetails( regbit_handle );
 
            tmphandle = vpi_handle( vpiParent, regbit_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                objtype = vpi_get( vpiType, tmphandle );
                vpi_printf( "    Parent        is %s",
                           vpi_get_str( vpiName, tmphandle ) );
                vpi_printf( " of type %s (%d).\n",
                           vpi_get_str( vpiType, tmphandle ), objtype );
                vpi_free_object( tmphandle );
            }
 
            vpi_free_object( regbit_handle );
            regbit_handle = vpi_scan( rbiter_handle );
            error_code = vpit_CheckError();
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpRegDetails()
 *
 * Print detailed info about specified reg.
 *
 *****************************************************************************/
static void vpit_DumpRegDetails( vpiHandle reg_handle )
{
    char      * tmpstr;
    vpiHandle   tmphandle;
    int         error_code;
    int         objtype;
    int         tmpint;
    int         is_vector;
    s_vpi_value value_info;
 
    tmpstr = vpi_get_str( vpiName, reg_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "\n  Reg name is %s.\n", tmpstr ? tmpstr : "<NULL>" );
    }
 
    objtype = vpi_get( vpiType, reg_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Type          is %s (%d).\n",
                   vpi_get_str( vpiType, reg_handle ), objtype );
    }
 
    tmpint = vpi_get( vpiLineNo, reg_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Line No       is %d.\n", tmpint );
    }
 
    tmpstr = vpi_get_str( vpiFile, reg_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    File          is %s.\n", tmpstr );
    }
 
    tmpstr = vpi_get_str( vpiFullName, reg_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Full Name     is %s.\n",
                   tmpstr ? tmpstr : "<NULL>" );
    }
 
    tmpint = vpi_get( vpiScalar, reg_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Scalar        is %s.\n",
                   tmpint ? "TRUE" : "FALSE" );
    }
 
    tmpint = vpi_get( vpiSize, reg_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Size          is %d.\n", tmpint );
    }
 
    is_vector = vpi_get( vpiVector, reg_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Vector        is %s.\n",
                   is_vector ? "TRUE" : "FALSE" );
    }
 
    if ( is_vector ) {
        tmphandle = vpi_handle( vpiLeftRange, reg_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            value_info.format = vpiIntVal;
            vpi_get_value( tmphandle, &value_info );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "    Left  Range   is %d.\n",
                           value_info.value.integer );
            }
            vpi_free_object( tmphandle );
        }
 
        tmphandle = vpi_handle( vpiRightRange, reg_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            value_info.format = vpiIntVal;
            vpi_get_value( tmphandle, &value_info );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "    Right Range   is %d.\n",
                           value_info.value.integer );
            }
            vpi_free_object( tmphandle );
        }
    }
 
    if ( objtype == vpiRegBit ) {
        tmphandle = vpi_handle( vpiIndex, reg_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            value_info.format = vpiIntVal;
            vpi_get_value( tmphandle, &value_info );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "    Index value   is %d.\n",
                           value_info.value.integer );
            }
            vpi_free_object( tmphandle );
        }
    }
 
    if ( objtype == vpiReg ) {
        tmphandle = vpi_handle( vpiScope, reg_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            vpi_printf( "    Scope         is %s",
                       vpi_get_str( vpiName, tmphandle ) );
            vpi_printf( " of type %s (%d).\n",
                       vpi_get_str( vpiType, tmphandle ),
                       vpi_get( vpiType, tmphandle ) );
            vpi_free_object( tmphandle );
        }
 
        tmphandle = vpi_handle( vpiModule, reg_handle );
        error_code = vpit_CheckError();
        if ( ! error_code ) {
            vpi_printf( "    Module        is %s",
                       vpi_get_str( vpiName, tmphandle ) );
            vpi_printf( " of type %s (%d).\n",
                       vpi_get_str( vpiType, tmphandle ),
                       vpi_get( vpiType, tmphandle ) );
            vpi_free_object( tmphandle );
        }
 
        if ( is_vector ) {
            vpit_DumpRegBitInfo( reg_handle );
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpRegInfo()
 *
 * Print info about specified scope's regs.
 *
 *****************************************************************************/
static void vpit_DumpRegInfo( vpiHandle scope_handle )
{
    int         error_code;
    vpiHandle   riter_handle;
    vpiHandle   reg_handle;
 
    /* Print info about all registers declared in the module. */
 
    riter_handle = vpi_iterate( vpiReg, scope_handle );
    error_code   = vpit_CheckError();
    if ( ! error_code && riter_handle ) {
        reg_handle = vpi_scan( riter_handle );
        error_code = vpit_CheckError();
        while ( reg_handle ) {
            vpit_DumpRegDetails( reg_handle );
            vpi_free_object( reg_handle );
            reg_handle = vpi_scan( riter_handle );
            error_code = vpit_CheckError();
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpVarDetails()
 *
 * Print detailed info about specified variable.
 *
 *****************************************************************************/
static void vpit_DumpVarDetails( vpiHandle var_handle )
{
    char      * tmpstr;
    vpiHandle   tmphandle;
    int         error_code;
    int         objtype;
    int         tmpint;
 
    tmpstr = vpi_get_str( vpiName, var_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "\n  Variable name is %s.\n",
                   tmpstr ? tmpstr : "<NULL>" );
    }
 
    objtype = vpi_get( vpiType, var_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Type          is %s (%d).\n",
                   vpi_get_str( vpiType, var_handle ), objtype );
    }
 
    tmpint = vpi_get( vpiLineNo, var_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Line No       is %d.\n", tmpint );
    }
 
    tmpstr = vpi_get_str( vpiFile, var_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    File          is %s.\n", tmpstr );
    }
 
    tmpstr = vpi_get_str( vpiFullName, var_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Full Name     is %s.\n",
                   tmpstr ? tmpstr : "<NULL>" );
    }
 
    tmpint = vpi_get( vpiSize, var_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Size          is %d.\n", tmpint );
    }
 
    tmpint = vpi_get( vpiArray, var_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        vpi_printf( "    Array         is %s.\n", tmpint ? "TRUE" : "FALSE" );
    }
 
    tmphandle = vpi_handle( vpiScope, var_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        objtype = vpi_get( vpiType, tmphandle );
        vpi_printf( "    Scope         is %s",
                   vpi_get_str( vpiName, tmphandle ) );
        vpi_printf( " of type %s (%d).\n",
                   vpi_get_str( vpiType, tmphandle ),
                   vpi_get( vpiType, tmphandle ) );
        vpi_free_object( tmphandle );
    }
 
    tmphandle = vpi_handle( vpiModule, var_handle );
    error_code = vpit_CheckError();
    if ( ! error_code ) {
        objtype = vpi_get( vpiType, tmphandle );
        vpi_printf( "    Module        is %s",
                   vpi_get_str( vpiName, tmphandle ) );
        vpi_printf( " of type %s (%d).\n",
                   vpi_get_str( vpiType, tmphandle ),
                   vpi_get( vpiType, tmphandle ) );
        vpi_free_object( tmphandle );
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpVarInfo()
 *
 * Print info about specified scope's variables.
 *
 *****************************************************************************/
static void vpit_DumpVarInfo( vpiHandle scope_handle )
{
    int         error_code;
    vpiHandle   viter_handle;
    vpiHandle   var_handle;
 
    /* Print info about all variables declared in the module. */
 
    viter_handle = vpi_iterate( vpiVariables, scope_handle );
    error_code   = vpit_CheckError();
    if ( ! error_code && viter_handle ) {
        var_handle = vpi_scan( viter_handle );
        error_code = vpit_CheckError();
        while ( var_handle ) {
            vpit_DumpVarDetails( var_handle );
            vpi_free_object( var_handle );
            var_handle = vpi_scan( viter_handle );
            error_code = vpit_CheckError();
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpScopeInfo()
 *
 * Print info about specified scope.
 *
 *****************************************************************************/
static void vpit_DumpScopeInfo( vpiHandle parent )
{
    char      * tmpstr;
    int         error_code;
    vpiHandle   scope_handle;
    vpiHandle   siter_handle;
 
    siter_handle = vpi_iterate( vpiInternalScope, parent );
    error_code   = vpit_CheckError();
    if ( ! error_code && siter_handle ) {
        scope_handle = vpi_scan( siter_handle );
        error_code = vpit_CheckError();
        while ( scope_handle ) {
 
            tmpstr = vpi_get_str( vpiName, scope_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "\nInternal scope is %s",
                           tmpstr ? tmpstr : "<NULL>" );
                vpi_printf( " of type %s (%d).\n",
                           vpi_get_str( vpiType, scope_handle ),
                           vpi_get( vpiType, scope_handle ) );
            }
 
            vpit_DumpRegInfo( scope_handle );
 
            vpit_DumpVarInfo( scope_handle );
 
            vpi_free_object( scope_handle );
            scope_handle = vpi_scan( siter_handle );
            error_code = vpit_CheckError();
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_DumpModuleInfo()
 *
 * Print info about specified module.
 *
 *****************************************************************************/
static void vpit_DumpModuleInfo( vpiHandle parent )
{
    char      * tmpstr;
    int         error_code;
    int         is_top_module;
    int         objtype;
    int         tmpint;
    vpiHandle   miter_handle;
    vpiHandle   mod_handle;
    vpiHandle   tmphandle;
 
    miter_handle = vpi_iterate( vpiModule, parent );
    error_code  = vpit_CheckError();
    if ( ! error_code && miter_handle ) {
 
        mod_handle = vpi_scan( miter_handle );
        error_code = vpit_CheckError();
        while ( mod_handle ) {
            tmpstr = vpi_get_str( vpiName, mod_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "\nModule name is %s.\n",
                           tmpstr ? tmpstr : "<NULL>" );
            }
 
            objtype = vpi_get( vpiType, mod_handle );
            error_code = vpit_CheckError();
            tmpstr = vpi_get_str( vpiType, mod_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "  Type           is %s (%d).\n", tmpstr, objtype);
            }
 
            tmpint = vpi_get( vpiCellInstance, mod_handle );
            error_code = vpit_CheckError();
            if ( tmpint >= 0 ) {
                vpi_printf( "  Cell Instance  is %s.\n",
                           tmpint ? "TRUE" : "FALSE" );
            }
 
            tmpstr = vpi_get_str( vpiDefFile, mod_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "  Def File       is %s.\n",
                           tmpstr ? tmpstr : "<NULL>" );
            }
 
            tmpstr = vpi_get_str( vpiDefName, mod_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "  Def Name       is %s.\n",
                           tmpstr ? tmpstr : "<NULL>" );
            }
 
            tmpint = vpi_get( vpiDefDelayMode, mod_handle );
            error_code = vpit_CheckError();
            if ( tmpint >= 0 ) {
                vpi_printf( "  Def Delay Mode is %d (%s).\n",
                           tmpint, vpit_GetDelayModeStr(tmpint) );
            }
 
            tmpstr = vpi_get_str( vpiFile, mod_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "  File           is %s.\n",
                           tmpstr ? tmpstr : "<NULL>" );
            }
 
            tmpstr = vpi_get_str( vpiFullName, mod_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "  Full Name      is %s.\n",
                           tmpstr ? tmpstr : "<NULL>" );
            }
 
            tmpint = vpi_get( vpiProtected, mod_handle );
            error_code = vpit_CheckError();
            if ( tmpint >= 0 ) {
                vpi_printf( "  Protected      is %s.\n",
                           tmpint ? "TRUE" : "FALSE" );
            }
 
            tmpint = vpi_get( vpiTimePrecision, mod_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "  Time Precision is %d (%s).\n", tmpint,
                           vpit_GetTimeUnitStr(tmpint) );
            }
 
            tmpint = vpi_get( vpiTimeUnit, mod_handle );
            error_code = vpit_CheckError();
            if ( ! error_code ) {
                vpi_printf( "  Time Unit      is %d (%s).\n", tmpint,
                           vpit_GetTimeUnitStr(tmpint) );
            }
 
            is_top_module = vpi_get( vpiTopModule, mod_handle );
            error_code = vpit_CheckError();
            if ( is_top_module >= 0 ) {
                vpi_printf( "  Top Module     is %s.\n",
                           is_top_module ? "TRUE" : "FALSE" );
            }
 
            if ( ! is_top_module ) {
                tmphandle = vpi_handle( vpiModule, mod_handle );
                error_code = vpit_CheckError();
                if ( ! error_code ) {
                    vpi_printf( "  Module         is %s",
                               vpi_get_str( vpiName, tmphandle ) );
                    vpi_printf( " of type %s (%d).\n",
                               vpi_get_str( vpiType, tmphandle ),
                               vpi_get( vpiType, tmphandle ) );
                    vpi_free_object( tmphandle );
                }
            }
 
            vpit_DumpPortInfo( mod_handle );
 
            vpit_DumpNetInfo( mod_handle );
 
            vpit_DumpRegInfo( mod_handle );
 
            vpit_DumpVarInfo( mod_handle );
 
            vpit_DumpScopeInfo( mod_handle );
 
            vpit_DumpModuleInfo( mod_handle );
 
            vpi_free_object( mod_handle );
            mod_handle = vpi_scan( miter_handle );
            error_code = vpit_CheckError();
        }
    }
}
 
/*****************************************************************************
 *
 * vpit_TraverseDesign()
 *
 * Traverse the design and print info about it.
 *
 *****************************************************************************/
PLI_INT32 vpit_TraverseDesign( PLI_BYTE8 *user_data )
{
 
    vpi_printf( "\n===========================\n" );
    vpi_printf( "Results of Design Traversal\n" );
    vpi_printf( "===========================\n" );
 
    vpit_DumpModuleInfo( 0 );
 
    return 0;
}
 
/*****************************************************************************
 *
 * vpit_RegisterTfs
 *
 * Registers test functions with the simulator.
 *
 *****************************************************************************/
void vpit_RegisterTfs( void )
{
    s_vpi_systf_data systf_data;
    vpiHandle        systf_handle;
 
    systf_data.type        = vpiSysTask;
    systf_data.sysfunctype = 0;
    systf_data.tfname      = "$traverse";
    systf_data.calltf      = vpit_TraverseDesign;
    systf_data.compiletf   = 0;
    systf_data.sizetf      = 0;
    systf_data.user_data   = 0;
    systf_handle = vpi_register_systf( &systf_data );
    vpi_free_object( systf_handle );
}
 
/*****************************************************************************
 *
 * Required structure for initializing VPI routines.
 *
 *****************************************************************************/
void (*vlog_startup_routines[])() = {
    vpit_RegisterTfs,
    0
};

简单提供测试模块top.v：

`timescale 1ns / 10ps
module test;
  reg  a, b, ci, clk;
  wire sum, co;
 
  addbit i1 (a, b, ci, sum, co);
 
  initial
    begin
      
      a = 0; b = 0; ci = 0;
      #10 a = 1;
      #10 b = 1;
      #10 a = 0;
      #1 $finish;
    end
    
  initial
    $monitor("At %0.2f: a=%d b=%d ci%d sum=%d co=%d",
             $realtime, a, b, ci, sum, co);
    
endmodule

子模块 instance.v

 
`timescale 1ns / 10ps
module addbit (a, b, ci, sum, co);
  input  a, b, ci;
  output sum, co;
 
  wire  a, b, ci, sum, co,
        n1, n2, n3;
initial begin
  $traverse;
end
  xor  (n1, a, b);
  xor  (sum, n1, ci);
  and  (n2, a, b);
  and  (n3, n1, ci);
  or   (co, n2, n3);
  
endmodule

通过vcs 输出的信息比较完善；

===========================
Results of Design Traversal
===========================
 
Module name is test.
  Type           is vpiModule (32).
  Cell Instance  is FALSE.
  Def File       is ./hello_test.v.
  Def Name       is test.
  Def Delay Mode is 0 (UNKNOWN).
  File           is ./hello_test.v.
  Full Name      is test.
  Protected      is FALSE.
  Time Precision is -11 (10 ps).
  Time Unit      is -9 (1 ns).
  Top Module     is TRUE.
 
  Net name is sum.
    Type          is vpiNet (36).
    Line No       is 5.
    File          is ./hello_test.v.
    Full Name     is test.sum.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is test of type vpiModule (32).
 
  Net name is co.
    Type          is vpiNet (36).
    Line No       is 5.
    File          is ./hello_test.v.
    Full Name     is test.co.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is test of type vpiModule (32).
 
  Reg name is a.
    Type          is vpiReg (48).
    Line No       is 4.
    File          is ./hello_test.v.
    Full Name     is test.a.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Scope         is test of type vpiModule (32).
    Module        is test of type vpiModule (32).
 
  Reg name is b.
    Type          is vpiReg (48).
    Line No       is 4.
    File          is ./hello_test.v.
    Full Name     is test.b.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Scope         is test of type vpiModule (32).
    Module        is test of type vpiModule (32).
 
  Reg name is ci.
    Type          is vpiReg (48).
    Line No       is 4.
    File          is ./hello_test.v.
    Full Name     is test.ci.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Scope         is test of type vpiModule (32).
    Module        is test of type vpiModule (32).
 
  Reg name is clk.
    Type          is vpiReg (48).
    Line No       is 4.
    File          is ./hello_test.v.
    Full Name     is test.clk.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Scope         is test of type vpiModule (32).
    Module        is test of type vpiModule (32).
 
Internal scope is i1 of type vpiModule (32).
 
Module name is i1.
  Type           is vpiModule (32).
  Cell Instance  is FALSE.
  Def File       is ./ins.v.
  Def Name       is addbit.
  Def Delay Mode is 0 (UNKNOWN).
  File           is ./hello_test.v.
  Full Name      is test.i1.
  Protected      is FALSE.
  Time Precision is -11 (10 ps).
  Time Unit      is -9 (1 ns).
  Top Module     is FALSE.
  Module         is test of type vpiModule (32).
 
  Port name is a.
    Type          is vpiPort (44).
    Direction     is vpiInput.
    Port Index    is 0.
    Line No       is 3.
    File          is ./ins.v.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule.
 
  Port name is b.
    Type          is vpiPort (44).
    Direction     is vpiInput.
    Port Index    is 1.
    Line No       is 3.
    File          is ./ins.v.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule.
 
  Port name is ci.
    Type          is vpiPort (44).
    Direction     is vpiInput.
    Port Index    is 2.
    Line No       is 3.
    File          is ./ins.v.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule.
 
  Port name is sum.
    Type          is vpiPort (44).
    Direction     is vpiOutput.
    Port Index    is 3.
    Line No       is 3.
    File          is ./ins.v.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule.
 
  Port name is co.
    Type          is vpiPort (44).
    Direction     is vpiOutput.
    Port Index    is 4.
    Line No       is 3.
    File          is ./ins.v.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule.
 
  Net name is a.
    Type          is vpiNet (36).
    Line No       is 4.
    File          is ./ins.v.
    Full Name     is test.i1.a.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule (32).
 
  Net name is b.
    Type          is vpiNet (36).
    Line No       is 4.
    File          is ./ins.v.
    Full Name     is test.i1.b.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule (32).
 
  Net name is ci.
    Type          is vpiNet (36).
    Line No       is 4.
    File          is ./ins.v.
    Full Name     is test.i1.ci.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule (32).
 
  Net name is sum.
    Type          is vpiNet (36).
    Line No       is 5.
    File          is ./ins.v.
    Full Name     is test.i1.sum.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule (32).
 
  Net name is co.
    Type          is vpiNet (36).
    Line No       is 5.
    File          is ./ins.v.
    Full Name     is test.i1.co.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule (32).
 
  Net name is n1.
    Type          is vpiNet (36).
    Line No       is 8.
    File          is ./ins.v.
    Full Name     is test.i1.n1.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule (32).
 
  Net name is n2.
    Type          is vpiNet (36).
    Line No       is 8.
    File          is ./ins.v.
    Full Name     is test.i1.n2.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule (32).
 
  Net name is n3.
    Type          is vpiNet (36).
    Line No       is 8.
    File          is ./ins.v.
    Full Name     is test.i1.n3.
    Net Type      is vpiWire.
    Scalar        is TRUE.
    Size          is 1.
    Vector        is FALSE.
    Module        is i1 of type vpiModule (32).
At 0.00: a=0 b=0 ci0 sum=0 co=0
At 10.00: a=1 b=0 ci0 sum=1 co=0
At 20.00: a=1 b=1 ci0 sum=0 co=1
At 30.00: a=0 b=1 ci0 sum=1 co=0
$finish called from file "./hello_test.v", line 16.
$finish at simulation time                 3100
           V C S   S i m u l a t i o n   R e p o r t 
Time: 31000 ps
CPU Time:      1.600 seconds;       Data structure size:   0.0Mb
Sun Mar 31 07:52:24 2019
 7:52:24 (snpslmd) IN: "VCSRuntime_Net" ubuntu@ubuntu  
CPU time: .876 seconds to compile + .808 seconds to elab + .576 seconds to link + 2.476 seconds in simulation

以上内容转载自：

https://blog.youkuaiyun.com/sxj731533730/article/details/88698648

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