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vpi_user.h

/*
 * This file was typed into computer readable form from the IEEE-1364-1995
 * document Annex E, by Jimen Ching.  All effort has been made to reproduce
 * the contents as accurately as possible.  Any deviations from the standard
 * are totally the fault of the typist.
 *
 * Because all conforming implementations must use the contents of this
 * file, I assume the contents of this file are public domain.
 *
 * This file is Copyright IEEE and is licensed accordingly.
 */

/**********************************************************************
 * vpi_user.h
 *
 * IEEE Std 1364-1995 Verilog Hardware Description Language (HDL)
 * Programming Language Interface (PLI).
 *
 * This file contains the constant definitions, structure definitions,
 * and routine declarations used by the Verilog PLI procedural
 * interface (VPI).
 *
 * The file should be included with all C routines that use the VPI
 * routines.
 ***********************************************************************/

#ifndef VPI_USER_H
#define VPI_USER_H

/* basic typedefs */

typedef unsigned long *vpiHandle;

/* The following are the constant definitions.  They are divided into three
   major areas:

   1) Object types
   2) Access methods
   3) Properties

   Note that most of the object types can also be used as access
   methods and that some methods can also be used a[s] properties.
*/

/*********** OBJECT TYPES  **********/
#define vpiAlways           1        /* always block */
#define vpiAssignStmt       2        /* quasi-continuous assignment */
#define vpiAssignment       3        /* procedural assignment */
#define vpiBegin            4        /* block statement */
#define vpiCase             5        /* case statement */
#define vpiCaseItem         6        /* case statement item */
#define vpiConstant         7        /* numerical constant or literal string */
#define vpiContAssign       8        /* continuous assignment */
#define vpiDeassign         9        /* deassignment statement */
#define vpiDefParam        10        /* defparam */
#define vpiDelayControl    11        /* delay statement (e.g. #10) */
#define vpiDisable         12        /* named block disable statement */
#define vpiEventControl    13        /* wait on event, e.g. @e */
#define vpiEventStmt       14        /* event trigger, e.g. ->e */
#define vpiFor             15        /* for statement */
#define vpiForce           16        /* force statement */
#define vpiForever         17        /* forever statement */
#define vpiFork            18        /* fork-join block */
#define vpiFuncCall        19        /* HDL function call */
#define vpiFunction        20        /* HDL function */
#define vpiGate            21        /* primitive gate */
#define vpiIf              22        /* if statement */
#define vpiIfElse          23        /* if-else statement */
#define vpiInitial         24        /* initial block */
#define vpiIntegerVar      25        /* integer variable */
#define vpiInterModPath    26        /* intermodule wire delay */
#define vpiIterator        27        /* iterator */
#define vpiIODecl          28        /* input/output declaration */
#define vpiMemory          29        /* behavioral memory */
#define vpiMemoryWord      30        /* single word of memory */
#define vpiModPath         31        /* module path for path delays */
#define vpiModule          32        /* module instance */
#define vpiNamedBegin      33        /* named block statement */
#define vpiNamedEvent      34        /* event variable */
#define vpiNamedFork       35        /* named fork-join block */
#define vpiNet             36        /* scalar or vector net */
#define vpiNetBit          37        /* bit of vector net */
#define vpiNullStmt        38        /* a semicolon (e.g., [;]) */
#define vpiOperation       39        /* behavioral operation */
#define vpiParamAssign     40        /* module parameter assignment */
#define vpiParameter       41        /* module parameter */
#define vpiPartSelect      42        /* part select */
#define vpiPathTerm        43        /* terminal of module path */
#define vpiPort            44        /* module port */
#define vpiPortBit         45        /* bit of vector module port */
#define vpiPrimTerm        46        /* primitive terminal */
#define vpiRealVar         47        /* real variable */
#define vpiReg             48        /* scalar or vector register */
#define vpiRegBit          49        /* bit of vector register net */
#define vpiRelease         50        /* release statement */
#define vpiRepeat          51        /* repeat statement */
#define vpiRepeatControl   52        /* repeat control in an assign stmt */
#define vpiSchedEvent      53        /* vpi_put_value() event */
#define vpiSpecParam       54        /* specparam */
#define vpiSwitch          55        /* transistor switch */
#define vpiSysFuncCall     56        /* system function call */
#define vpiSysTaskCall     57        /* system task call */
#define vpiTableEntry      58        /* UDP state table entry */
#define vpiTask            59        /* HDL task */
#define vpiTaskCall        60        /* HDL task call */
#define vpiTchk            61        /* timing check */
#define vpiTchkTerm        62        /* terminal of timing check */
#define vpiTimeVar         63        /* time variable */
#define vpiTimeQueue       64        /* simulation event queue */
#define vpiUdp             65        /* user-defined primitive */
#define vpiUdpDefn         66        /* UDP definition */
#define vpiUserSystf       67        /* user-defined system task or function */
#define vpiVarSelect       68        /* variable array selection */
#define vpiWait            69        /* wait statement */
#define vpiWhile           70        /* while statement */

/*********** METHODS  **********/
/*********** methods used to traverse one-to-one relationships ***********/
#define vpiCondition       71        /* condition expression */
#define vpiDelay           72        /* net or gate delay */
#define vpiElseStmt        73        /* else statement */
#define vpiForIncStmt      74        /* increment statement in for loop */
#define vpiForInitStmt     75        /* initialization statement in for loop */
#define vpiHighConn        76        /* higher connection to port */
#define vpiLhs             77        /* left-hand side of assignment */
#define vpiIndex           78        /* index of var select, bit select, etc. */
#define vpiLeftRange       79        /* left range of vector or part select */
#define vpiLowConn         80        /* lower connection to port */
#define vpiParent          81        /* parent object */
#define vpiRhs             82        /* right-hand side of assignment */
#define vpiRightRange      83        /* right range of vector or part select */
#define vpiScope           84        /* containing scope object */
#define vpiSysTfCall       85        /* task function call */
#define vpiTchkDataTerm    86        /* timing check data term */
#define vpiTchkNotifier    87        /* timing check notifier */
#define vpiTchkRefTerm     88        /* timing check reference term */

/*********** methods used to traverse one-to-many relationships ***********/
#define vpiArgument        89        /* argument to (system) task or function */
#define vpiBit             90        /* bit of vector net or port */
#define vpiDriver          91        /* driver for a net */
#define vpiInternalScope   92        /* internal scope in module */
#define vpiLoad            93        /* load on net or register */
#define vpiModDataPathIn   94        /* data terminal of a module path */
#define vpiModPathIn       95        /* input terminal of a module path */
#define vpiModPathOut      96        /* output terminal of a module path */
#define vpiOperand         97        /* operand of expression */
#define vpiPortInst        98        /* connected port instance */
#define vpiProcess         99        /* process in module */
#define vpiVariables      100        /* variables in module */
#define vpiUse            101        /* usage */

/**** methods used to traverse one-to-one or one-to-many relationships ****/
#define vpiExpr           102        /* connected expression */
#define vpiPrimitive      103        /* primitive (gate, switch, UDP) */
#define vpiStmt           104        /* statement in process or task */

/*********** PROPERTIES ***********/
/*********** generic object properties ***********/
#define vpiUndefined        -1   /* undefined property */
#define vpiType              1   /* type of object */
#define vpiName              2   /* local name of object */
#define vpiFullName          3   /* full hierarchical name */
#define vpiSize              4   /* size of gate, net, port, etc. */
#define vpiFile              5   /* File name in which the object is used */
#define vpiLineNo            6   /* File line number where object is used */

/*********** module properties ***********/
#define vpiTopModule         7   /* top-level module (Boolean) */
#define vpiCellInstance      8   /* cell (Boolean) */
#define vpiDefName           9   /* module definition name */
#define vpiProtected        10   /* source-protected module (Boolean) */
#define vpiTimeUnit         11   /* module time unit */
#define vpiTimePrecision    12   /* module time precision */
#define vpiDefNetType       13   /* default net type */
#define vpiUnconnDrive      14   /* unconnected port drive strength */
#define vpiHighZ               1    /* No default drive given */
#define vpiPull1               2    /* default pull1 drive */
#define vpiPull0               3    /* default pull0 drive */
#define vpiDefFile          15   /* File name where the module is defined */
#define vpiDefLineNo        16   /* File line number where module is defined */
#define vpiDefDelayMode     17   /* Delay module of the module */
#define vpiDelayModeNone       1    /* No delay mode specidied */
#define vpiDelayModePath       2    /* Path delay mode */
#define vpiDelayModeDistrib    3    /* Distributed delay mode */
#define vpiDelayModeUnit       4    /* Unit delay mode */
#define vpiDelayModeZero       5    /* Zero delay mode */
#define vpiDelayModeMTM        6    /* min:typ:max delay mode */
#define vpiDefDecayTime     18   /* Decay time for trireg net */

/*********** port and net properties ***********/
#define vpiScalar           19   /* scalar (Boolean) */
#define vpiVector           20   /* vector (Boolean) */
#define vpiExplicitName     21   /* port is explicitly named */
#define vpiDirection        22   /* direction of port: */
#define vpiInput               1    /* input */
#define vpiOutput              2    /* output */
#define vpiInout               3    /* inout */
#define vpiMixedIO             4    /* mixed input-output */
#define vpiNoDirection         5    /* no direction */
#define vpiConnByName       23   /* connected by name (Boolean) */

#define vpiNetType          24   /* net subtypes: */
#define vpiWire                1    /* wire net */
#define vpiWand                2    /* wire-and net */
#define vpiWor                 3    /* wire-or net */
#define vpiTri                 4    /* tri-state net */
#define vpiTri0                5    /* pull-down net */
#define vpiTri1                6    /* pull-up net */
#define vpiTriReg              7    /* tri-state reg net */
#define vpiTriAnd              8    /* tri-state wire-and net */
#define vpiTriOr               9    /* tri-state wire-or net */
#define vpiSupply1            10    /* supply 1 net */
#define vpiSupply0            11    /* supply zero net */

#define vpiExplicitScalared 25   /* explicitly scalared (Boolean) */
#define vpiExplicitVectored 26   /* explicitly vectored (Boolean) */
#define vpiExpanded         27   /* expanded vector net (Boolean) */
#define vpiImplicitDecl     28   /* implicitly declared net (Boolean) */
#define vpiChargeStrength   29   /* charge decay strength of net */
#define vpiArray            30   /* variable array (Boolean) */
#define vpiPortIndex        31   /* port index */

/*********** gate and terminal properties ***********/
#define vpiTermIndex        32   /* Index of a primitive terminal */
#define vpiStrength0        33   /* 0-strength of net or gate */
#define vpiStrength1        34   /* 1-strength of net or gate */
#define vpiPrimType         35   /* primitive subtypes: */
#define vpiAndPrim             1    /* and gate */
#define vpiNandPrim            2    /* nand gate */
#define vpiNorPrim             3    /* nor gate */
#define vpiOrPrim              4    /* or gate */
#define vpiXorPrim             5    /* xor gate */
#define vpiXnorPrim            6    /* xnor gate */
#define vpiBufPrim             7    /* buffer */
#define vpiNotPrim             8    /* not gate */
#define vpiBufif0Prim          9    /* zero-enabled buffer */
#define vpiBufif1Prim         10    /* one-enabled buffer */
#define vpiNotif0Prim         11    /* zero-enabled not gate */
#define vpiNotif1Prim         12    /* one-enabled not gate */
#define vpiNmosPrim           13    /* nmos switch */
#define vpiPmosPrim           14    /* pmos switch */
#define vpiCmosPrim           15    /* cmos switch */
#define vpiRnmosPrim          16    /* resistive nmos switch */
#define vpiRpmosPrim          17    /* resistive pmos switch */
#define vpiRcmosPrim          18    /* resistive cmos switch */
#define vpiRtranPrim          19    /* resistive bidirectional */
#define vpiRtranif0Prim       20    /* zero-enable resistive bidirectional */
#define vpiRtranif1Prim       21    /* one-enable resistive bidirectional */
#define vpiTranPrim           22    /* bidirectional */
#define vpiTranif0Prim        23    /* zero-enable bidirectional */
#define vpiTranif1Prim        24    /* one-enable bidirectional */
#define vpiPullupPrim         25    /* pullup */
#define vpiPulldownPrim       26    /* pulldown */
#define vpiSeqPrim            27    /* sequential UDP */
#define vpiCombPrim           28    /* combinational UDP */

/*********** path, path terminal, timing check properties ***********/
#define vpiPolarity         36   /* polarity of module path... */
#define vpiDataPolarity     37   /* ...or data path: */
#define vpiPositive            1    /* positive */
#define vpiNegative            2    /* negative */
#define vpiUnknown             3    /* unknown (unspecified) */

#define vpiEdge             38   /* edge type of module path: */
#define vpiNoEdge   0x00000000      /* no edge */
#define vpiEdge01   0x00000001      /* 0 -> 1 */
#define vpiEdge10   0x00000002      /* 1 -> 0 */
#define vpiEdge0x   0x00000004      /* 0 -> x */
#define vpiEdgex1   0x00000008      /* x -> 1 */
#define vpiEdge1x   0x00000010      /* 1 -> x */
#define vpiEdgex0   0x00000020      /* x -> 0 */
#define vpiPosedge  (vpiEdgex1  | vpiEdge01 | vpiEdge0x)
#define vpiNegedge  (vpiEdgex0  | vpiEdge10 | vpiEdge1x)
#define vpiAnyEdge  (vpiPosedge | vpiNegedge)

#define vpiPathType         39   /* path delay connection subtypes: */
#define vpiPathFull            1    /* ( a *> b ) */
#define vpiPathParallel        2    /* ( a => b ) */
#define vpiModPathHasIfnone 40   /* state-dependent module path has ifnone
                                                      condition specified */
#define vpiTchkType         41   /* timing check subtypes: */
#define vpiSetup               1    /* $setup */
#define vpiHold                2    /* $hold */
#define vpiPeriod              3    /* $period */
#define vpiWidth               4    /* $width */
#define vpiSkew                5    /* $skew */
#define vpiRecovery            6    /* $recovery */
#define vpiNoChange            7    /* $nochange */
#define vpiSetupHold           8    /* $setuphold */

/*********** expression properties ***********/
#define vpiOpType           42   /* operation subtypes: */
#define vpiMinusOp             1   /* unary minus */
#define vpiPlusOp              2   /* unary plus */
#define vpiNotOp               3   /* unary not */
#define vpiBitNegOp            4   /* bitwise negation */
#define vpiUnaryAndOp          5   /* bitwise reduction and */
#define vpiUnaryNandOp         6   /* bitwise reduction nand */
#define vpiUnaryOrOp           7   /* bitwise reduction or */
#define vpiUnaryNorOp          8   /* bitwise reduction nor */
#define vpiUnaryXorOp          9   /* bitwise reduction xor */
#define vpiUnaryXNorOp        10   /* bitwise reduction xnor */
#define vpiSubOp              11   /* binary subtraction */
#define vpiDivOp              12   /* binary division */
#define vpiModOp              13   /* binary modulus */
#define vpiEqOp               14   /* binary equality */
#define vpiNeqOp              15   /* binary inequality */
#define vpiCaseEqOp           16   /* case (x and z) equality */
#define vpiCaseNeqOp          17   /* case inequality */
#define vpiGtOp               18   /* binary greater than */
#define vpiGeOp               19   /* binary greater than or equal to */
#define vpiLtOp               20   /* binary less than */
#define vpiLeOp               21   /* binary less than or equal to */
#define vpiLShiftOp           22   /* binary left shift */
#define vpiRShiftOp           23   /* binary right shift */
#define vpiAddOp              24   /* binary addition */
#define vpiMultOp             25   /* binary multiplication */
#define vpiLogAndOp           26   /* binary logical and */
#define vpiLogOrOp            27   /* binary logical or */
#define vpiBitAndOp           28   /* binary bitwise and */
#define vpiBitOrOp            29   /* binary bitwise or */
#define vpiBitXorOp           30   /* binary bitwise xor */
#define vpiBitXNorOp          31   /* binary bitwise xnor */
#define vpiConditionOp        32   /* ternary conditional */
#define vpiConcatOp           33   /* n-ary concatenation */
#define vpiMultiConcatOp      34   /* repeated concatenation */
#define vpiEventOrOp          35   /* event or */
#define vpiNullOp             36   /* null operation */
#define vpiListOp             37   /* list of expression */
#define vpiMinTypMaxOp        38   /* min:typ:max: delay expression */
#define vpiPosedgeOp          39   /* posedge */
#define vpiNegedgeOp          40   /* negedge */

/*********** expression properties ***********/
#define vpiConstType        43   /* constant subtypes: */
#define vpiDecConst            1    /* decimial integer */
#define vpiRealConst           2    /* real */
#define vpiBinaryConst         3    /* binary integer */
#define vpiOctConst            4    /* octal integer */
#define vpiHexConst            5    /* hexadecimal integer */
#define vpiStringConst         6    /* string literal */

#define vpiBlocking         44   /* blocking assignment (Boolean) */
#define vpiCaseType         45   /* case statement subtypes: */
#define vpiCaseExact           1    /* exact match */
#define vpiCaseX               2    /* ignore X's */
#define vpiCaseZ               3    /* ignore Z's */
#define vpiNetDeclAssign    46   /* assign part of declaration (Boolean) */

/*********** system taskfunc properties ******************/
#define vpiSysFuncType      47   /* system function type */
#define vpiSysFuncInt          1    /* returns integer */
#define vpiSysFuncReal         2    /* returns real */
#define vpiSysFuncTime         3    /* returns time */
#define vpiSysFuncSized        4    /* returns sized */
#define vpiUserDefn         48   /* user defined system tf (Boolean) */

#define vpiScheduled        49   /* is object vpiSchedEvent still scheduled */

/*********** I/O related definitions ********************/
#define VPI_MCD_STDOUT 0x00000001
#define VPI_MCD_STDERR 0x00000002
#define VPI_MCD_LOG    0x00000004

/************************** STRUCTURE DEFINITIONS ************************/
/***************************** time structure ****************************/
typedef struct t_vpi_time
{
  int type;                /* [vpiScaledRealTime,vpiSimTime,vpiSuppressTime] */
  unsigned int high, low;  /* for vpiSimTime */
  double real;             /* for vpiScaledRealTime */
} s_vpi_time, *p_vpi_time;

/* time types */
#define vpiScaledRealTime 1
#define vpiSimTime        2
#define vpiSuppressTime   3

/***************************** delay structures **************************/
typedef struct t_vpi_delay
{
  struct t_vpi_time *da;   /* ptr to user allocated array of delay values */
  int no_of_delays;        /* number of delays */
  int time_type;           /* [vpiScaledRealTime,vpiSimTime,vpiSuppressTime]*/
  int mtm_flag;            /* true for mtm values */
  int append_flag;         /* true for append */
  int pulsere_flag;        /* true for pulsere values */
} s_vpi_delay, *p_vpi_delay;

/***************************** value structures **************************/
/* vector value */
typedef struct t_vpi_vecval
{
  /* following fields are repeated enough times to contain vector */
  int aval, bval;          /* bit encoding: ab: 00:0, 10:1, 11=X, 01=Z */
} s_vpi_vecval, *p_vpi_vecval;


/* strength (scalar) value */
typedef struct t_vpi_strengthval
{
  int logic;               /* vpi[0,1,X,Z] */
  int s0, s1;              /* refer to strength coding below */
} s_vpi_strengthval, *p_vpi_strengthval;

/* strength values */
#define vpiSupplyDrive     0x80
#define vpiStrongDrive     0x40
#define vpiPullDrive       0x20
#define vpiWeakDrive       0x08
#define vpiLargeDrive      0x10
#define vpiMediumDrive     0x04
#define vpiSmallDrive      0x02
#define vpiHiZ             0x01

/* generic value */
typedef struct t_vpi_value
{
  int format; /* vpi[[Bin,Oct,Dec,Hex]Str,Scalar,Int,Real,String,Vector
                         Strength,Suppress,Time,ObjType]Val */

  union
    {
      char *str;                           /* string value */
      int scalar;                          /* vpi[0,1,X,Z] */
      int integer;                         /* integer value */
      double real;                         /* real value */
      struct t_vpi_time *time;             /* time value */
      struct t_vpi_vecval *vector;         /* vector value */
      struct t_vpi_strengthval *strength;  /* strength value */
      char *misc;                          /* ...other */
    } value;
} s_vpi_value, *p_vpi_value;

/* value formats */
#define vpiBinStrVal          1
#define vpiOctStrVal          2
#define vpiDecStrVal          3
#define vpiHexStrVal          4
#define vpiScalarVal          5
#define vpiIntVal             6
#define vpiRealVal            7
#define vpiStringVal          8
#define vpiVectorVal          9
#define vpiStrengthVal       10
#define vpiTimeVal           11
#define vpiObjTypeVal        12
#define vpiSuppressVal       13

/* delay modes */
#define vpiNoDelay            1
#define vpiInertialDelay      2
#define vpiTransportDelay     3
#define vpiPureTransportDelay 4

/* force and release flags */
#define vpiForceFlag          5
#define vpiReleaseFlag        6

/* scheduled event cancel flag */
#define vpiCancelEvent        7

/* bit mask for the flags argument to vpi_put_value() */
#define vpiReturnEvent        0x1000

/* scalar values */
#define vpi0                  0
#define vpi1                  1
#define vpiZ                  2
#define vpiX                  3
#define vpiH                  4
#define vpiL                  5
#define vpiDontCare           6
/*
#define vpiNoChange           7  Defined under vpiTchkType, but can be used here.
*/

/************************* system taskfunc structure *********************/
typedef struct t_vpi_systf_data
{
  int type;                   /* vpiSysTask, vpiSysFunc */
  int sysfunctype;            /* vpiSysFunc[Int,Real,Time,Sized] */
  char *tfname;               /* first character has to be '$' */
  int (*calltf)();
  int (*compiletf)();
  int (*sizetf)();            /* for vpiSysFuncSized callbacks only */
  char *user_data;
} s_vpi_systf_data, *p_vpi_systf_data;

#define vpiSysTask            1
#define vpiSysFunc            2
/* the subtypes are defined under the vpiSysFuncType property */

/***************** Verilog execution information structure ***************/
typedef struct t_vpi_vlog_info
{
  int argc;
  char **argv;
  char *product;
  char *version;
} s_vpi_vlog_info, *p_vpi_vlog_info;

/******************** PLI error information structure ********************/
typedef struct t_vpi_error_info
{
  int state;                    /* vpi[Compile,PLI,Run] */
  int level;                    /* vpi[Notice,Warning,Error,System,Internal] */
  char *message;
  char *product;
  char *code;
  char *file;
  int line;
} s_vpi_error_info, *p_vpi_error_info;

/* error types */
#define vpiCompile              1
#define vpiPLI                  2
#define vpiRun                  3

#define vpiNotice               1
#define vpiWarning              2
#define vpiError                3
#define vpiSystem               4
#define vpiInternal             5

/*************************** callback structures *************************/
/* normal callback structure */
typedef struct t_cb_data
{
  int reason;                   /* callback reason */
  int (*cb_rtn)();              /* call routine */
  vpiHandle obj;                /* trigger object */
  p_vpi_time *time;             /* callback time */
  p_vpi_value *value;           /* trigger object value */
  int index;                    /* index of the memory word or var select
                                                   that changed value */
  char *user_data;
} s_cb_data, *p_cb_data;

/* Callback Reasons */
/* Simulation-related */
#define cbValueChange             1
#define cbStmt                    2
#define cbForce                   3
#define cbRelease                 4

/* Time-related */
#define cbAtStartOfSimTime        5
#define cbReadWriteSynch          6
#define cbReadOnlySync            7
#define cbNextSimTime             8
#define cbAfterDelay              9

/* Action-related */
#define cbEndOfCompile           10
#define cbStartOfSimulation      11
#define cbEndOfSimulation        12
#define cbError                  13
#define cbTchkViolation          14
#define cbStartOfSave            15
#define cbEndOfSave              16
#define cbStartOfRestart         17
#define cbEndOfRestart           18
#define cbStartOfReset           19
#define cbEndOfReset             20
#define cbEnterInteractive       21
#define cbExitInteractive        22
#define cbInteractiveScopeChange 23
#define cbUnresolvedSystf        24

#if defined(__STDC__) || defined(__cplusplus)

#ifndef PROTO_PARAMS
#define PROTO_PARAMS(params) params
#define DEFINED_PROTO_PARAMS
#endif

#ifndef EXTERN
#define EXTERN
#define DEFINED_EXTERN
#endif

#else

#ifndef PROTO_PARAMS
#define PROTO_PARAMS(params) (/* nothing */)
#define DEFINED_PROTO_PARAMS
#endif

#ifndef EXTERN
#define EXTERN extern
#define DEFINED_EXTERN
#endif

#endif /* __STDC__ */

/************************** FUNCTION DECLARATIONS ************************/

/* callback related */
EXTERN vpiHandle    vpi_register_cb     PROTO_PARAMS((p_cb_data cb_data_p));
EXTERN int          vpi_remove_cb       PROTO_PARAMS((vpiHandle cb_obj));
EXTERN void         vpi_get_cb_info     PROTO_PARAMS((vpiHandle object,
                                          p_cb_data cb_data_p));
EXTERN vpiHandle    vpi_register_systf  PROTO_PARAMS((p_vpi_systf_data
                                          systf_data_p));
EXTERN void         vpi_get_systf_info  PROTO_PARAMS((vpiHandle object,
                                          p_vpi_systf_data systf_data_p));

/* for obtaining handles */
EXTERN vpiHandle    vpi_handle_by_name  PROTO_PARAMS((char *name,
                                          vpiHandle scope));
EXTERN vpiHandle    vpi_handle_by_index PROTO_PARAMS((vpiHandle object,
                                          int indx));

/* for traversing relationships */
EXTERN vpiHandle    vpi_handle          PROTO_PARAMS((int type,
                                          vpiHandle referenceHandle));
EXTERN vpiHandle    vpi_iterate         PROTO_PARAMS((int type,
                                          vpiHandle referenceHandle));
EXTERN vpiHandle    vpi_scan            PROTO_PARAMS((vpiHandle iterator));

/* for accessing properties */
EXTERN int          vpi_get             PROTO_PARAMS((int property,
                                          vpiHandle object));
EXTERN char *       vpi_get_str         PROTO_PARAMS((int property,
                                          vpiHandle object));

/* delay processing */
EXTERN void         vpi_get_delays      PROTO_PARAMS((vpiHandle object,
                                          p_vpi_delay delay_p));
EXTERN void         vpi_put_delays      PROTO_PARAMS((vpiHandle object,
                                          p_vpi_delay delay_p));

/* value processing */
EXTERN void         vpi_get_value       PROTO_PARAMS((vpiHandle object,
                                          p_vpi_value value_p));
EXTERN vpiHandle    vpi_put_value       PROTO_PARAMS((vpiHandle object,
                                          p_vpi_value value_p,
                                          p_vpi_time time_p, int flags));

/* time processing */
EXTERN void         vpi_get_time        PROTO_PARAMS((vpiHandle object,
                                          p_vpi_time time_p));

/* I/O routines */
EXTERN unsigned int vpi_mcd_open        PROTO_PARAMS((char *fileName));
EXTERN unsigned int vpi_mcd_close       PROTO_PARAMS((unsigned int mcd));
EXTERN char *       vpi_mcd_name        PROTO_PARAMS((unsigned int cd));
#ifndef VPI_IO_C
EXTERN int          vpi_mcd_printf      PROTO_PARAMS((unsigned int mcd,
                                          char *format,...));
EXTERN int          vpi_printf          PROTO_PARAMS((char *format,...));
#else
EXTERN int          vpi_mcd_printf      PROTO_PARAMS(());
EXTERN int          vpi_printf          PROTO_PARAMS(());
#endif

/* utility routines */
EXTERN int          vpi_compare_objects PROTO_PARAMS((vpiHandle object1,
                                          vpiHandle object2));
EXTERN int          vpi_chk_error       PROTO_PARAMS((p_vpi_error_info
                                          error_info_p));
EXTERN int          vpi_free_object     PROTO_PARAMS((vpiHandle object));
EXTERN int          vpi_get_vlog_info   PROTO_PARAMS((p_vpi_vlog_info
                                          vlog_info_p));

#ifdef DEFINED_PROTO_PARAMS
#undef DEFINED_PROTO_PARAMS
#undef PROTO_PARAMS
#endif
#ifdef DEFINED_EXTERN
#undef DEFINED_EXTERN
#undef EXTERN
#endif

/************************** GLOBAL VARIABLES ************************/
extern void (*vlog_startup_routines[])(); /* array of function pointers, */
                                          /* last pointer should be null */

#endif /* VPI_USER_H */

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