utl.h

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    #define UTL_logDebug( format )  \
            LOG_printf( UTL_logDebugHandle, (format) )
    #define UTL_logDebug0( format )  \
            LOG_printf( UTL_logDebugHandle, (format) )
    #define UTL_logDebug1( format, arg1 )  \
            LOG_printf( UTL_logDebugHandle, (format), (arg1) )
    #define UTL_logDebug2( format, arg1, arg2 )  \
            LOG_printf( UTL_logDebugHandle, (format), (arg1), (arg2) )
#else   /* UTL_LOGDEBUG == 0 */
    #define UTL_logDebug( format )
    #define UTL_logDebug0( format )
    #define UTL_logDebug1( format, arg1 )
    #define UTL_logDebug2( format, arg1, arg2 )
#endif  /* UTL_LOGDEBUG */

        
/*
 *  UTL_ALGMEM class comprises two related funtions:
 *  UTL_showAlgMem() which displays algorithm instance's memory usage, and
 *  UTL_showHeapUsage() which reports a particular heap's usage 
 */
#if UTL_ALGMEM == 1
    /* 
     *  ======== UTL_showAlgMem ==========
     *
     *  Reporting XDAIS algorithm memory usage
     *
     *  This macro provides size and memory type information for each allocated
     *  memory segment of the given algorithm (by calling the function below),
     *  as well as the total size broken down by memory type.
     *  If the third argument is set to 1, it will also show the actual
     *  memory address of the segment. That can be accomplished by defining
     *  flag UTL_ALGMEMVERBOSE to 1.
     */
    #define UTL_showAlgMem( alg )       \
        UTL_showAlgMemFunc( (Ptr)(alg), UTL_stringify( alg ), \
                            UTL_ALGMEMVERBOSE )
    /* Variant of UTL_showAlgMem() where name is specified directly. */
    #define UTL_showAlgMemName( alg, algName )       \
        UTL_showAlgMemFunc( (Ptr)(alg), algName, UTL_ALGMEMVERBOSE )
    #ifndef     UTL_ALGMEMVERBOSE
        #define UTL_ALGMEMVERBOSE 0   /* by default, don't display addresses */
    #endif
    
    /*
     *  ======== UTL_showAlgMemFunc ==========
     *
     *  Declaration of the actual function implementing the above macro.
     */
    extern Void UTL_showAlgMemFunc( Ptr algHandle, String algName, 
                                    Int boolVerbose );

    /* 
     *  ======== UTL_showHeapUsage ==========
     *
     *  A small utility function that shows the size and usage of the
     *  given segment. Similarly to a function above, it is a macro that
     *  expands the argument for printing and calls the actual function.
     */
    #define UTL_showHeapUsage( SEGID ) /* name such as IDATA */     \
        UTL_showHeapUsageFunc( SEGID, UTL_stringify( SEGID ) )
        
    /*
     *  ======== UTL_showHeapUsageFunc ==========
     *
     *  Declaration of the actual function implementing the above macro.
     */
    extern Void UTL_showHeapUsageFunc( Int segid, String segname );
    
#else                           /* UTL_ALGMEM */
    #define UTL_showAlgMem( alg )
    #define UTL_showAlgMemName( alg, algName )
    #define UTL_showHeapUsage( SEGID ) 
#endif                          /* UTL_ALGMEM */


/*  
 *  ======== UTL_sts* ==========
 *
 *  There are several utility functions for time measurement: measuring
 *  periods, execution times, and phases between periodic events.
 *
 *  Arguments to UTL_sts* functions are names of STS objects as defined
 *  in the DSP/BIOS configuration file (not the addresses). The only 
 *  prerequisite for using an  STS object with any UTL_sts function 
 *  is to use the following macro in any of the .c modules of the application: 
 *  UTL_stsDefine( <sts> );
 *  where <sts> is the name of the STS object as defined in the configuration 
 *  (e.g. "stsTime0" or "stsTransfer").
 *  This macro allocates a space for an internal structure used by UTL_sts* 
 *  functions and initializes that object.
 *
 *  Supported functions (macros) are the following: 
 * 
 *  UTL_stsStart( <sts> ), UTL_stsStop( <sts> ) -- start/stop sequence
 *  for measuring execution time. UTL_stsStart() also returns current time,
 *  UTL_stsStop() returns the measured difference. NOTE: for accurate
 *  results, it is recommended that you DISABLE INTERRUPTS before calling
 *  UTL_stsStart() and to enable them after returning from UTL_stsStop().
 * 
 *  UTL_stsPeriod( <sts> ) measures the difference in time between two
 *  calls to this procedure (for the same STS object), applies it to 
 *  the <sts> object and returns the difference.
 *
 *  UTL_stsPhase( <stsSrc1>, <stsSrc2>, <stsDst> ) -- examines the
 *  absolute difference in timestamp values for STS objects <stsSrc1> and 
 *  <stsSrc2>, stores it in <stsDst> and returns that value. Objects
 *  <stsSrc1> and <stsSrc2> must have been used in a UTL_stsPeriod()
 *  function; for instance, if data transmit functions for two channels
 *  call UTL_stsPeriod( stsCh0 ) and UTL_stsPeriod( stsCh0 ) respectively,
 *  UTL_stsPhase( stsCh0, stsCh0, stsPh01 ) will return the phase 
 *  difference between the two channels and update stsPh01 accordingly.
 */
#if UTL_STS == 1

    typedef struct _UTLSTS_Obj {
        STS_Obj *sts;      /* pointer to STS object defined in config file */
        LgUns    lastTime; /* last timestamp for this object */
        LgUns    count;    /* number of times Period invoked (used for Phase) */
    } UTLSTS_Obj;

    #define UTL_stsDefine( stsName )        \
        extern STS_Obj stsName;         \
        UTLSTS_Obj utl##stsName = { &(stsName), 0, 0 }

    #define UTL_stsStart( stsName ) do {        \
        extern UTLSTS_Obj utl##stsName;         \
        UTL_stsStartFunc( &(utl##stsName) );    \
        } while (0)

    #define UTL_stsStop( stsName ) do {         \
        extern UTLSTS_Obj utl##stsName;         \
        UTL_stsStopFunc( &(utl##stsName) );     \
        } while (0)

    #define UTL_stsPeriod( stsName ) do {       \
        extern UTLSTS_Obj utl##stsName;         \
        UTL_stsPeriodFunc( &(utl##stsName) );   \
        } while (0)

    #define UTL_stsPhase( stsSrc1, stsSrc2, stsDst ) do {                     \
        extern UTLSTS_Obj utl##stsSrc1, utl##stsSrc2, utl##stsDst ;           \
        UTL_stsPhaseFunc( &(utl##stsSrc1), &(utl##stsSrc2), &(utl##stsDst) ); \
        } while (0)

    #define UTL_stsReset( stsName ) do {        \
        extern UTLSTS_Obj utl##stsName;         \
        UTL_stsResetFunc( &(utl##stsName) );    \
        } while (0)

    extern LgUns UTL_stsStartFunc ( UTLSTS_Obj *utlsts );
    extern LgUns UTL_stsStopFunc  ( UTLSTS_Obj *utlsts );
    extern LgUns UTL_stsPeriodFunc( UTLSTS_Obj *utlsts );
    extern LgUns UTL_stsPhaseFunc ( UTLSTS_Obj *utlstsSrc1, 
                                    UTLSTS_Obj *utlstsSrc2, 
                                    UTLSTS_Obj *utlstsDst );
    extern Void  UTL_stsResetFunc ( UTLSTS_Obj *utlsts );

#else   /* UTL_STS */

    #define UTL_stsDefine( stsName ) extern Int noUTLStsFunctionality
    #define UTL_stsStart( stsName )
    #define UTL_stsStop( stsName )
    #define UTL_stsPeriod( stsName )
    #define UTL_stsPhase( stsSrc1, stsSrc2, stsDst )
    #define UTL_stsReset( stsName )

#endif  /* UTL_STS */



/*
 *  ======== UTL_assert ========
 *  Assert macro for exceptions
 * 
 *  If an assertion fails, we interrupt the execution flow and preserve
 *  the state of the system.
 *  If the application is being debugged with Code Composer Studio, we place 
 *  a word in program memory that has the effect of a breakpoint -- it halts 
 *  the execution and CCS shows the line of code where the failed assertion 
 *  occured. The special word that causes the breakpoint effect is different 
 *  for every DSP family.
 *  Otherwise, if CCS is not used, we disable interrupts and run into an 
 *  infinite loop, waiting for the user to halt the target manually.
 *  To do so, define UTL_ASSERTCCS macro flag externally to be 0.
 */
#if UTL_ASSERT == 1  /* first check if UTL_ASSERT() is enabled at all */

    /* 
     *  First we define the special word for each platform: 
     *  On 55x we add a NOP to guard against small possibility that 
     *  long instruction pipeline causes debugger to stop at next C src line
     *  instead of currently executing C src statement. We also ensure this 
     *  works on both 55x mnemonic (default) and algebraic 55x assembler.
     *  Note that asm statement is a single execution context to maintain
     *  pre-processor consistency.
     */
    #if   defined( _54_ ) 
        #define UTL_STOPWORD asm( "  ESTOP" )
    #elif defined( _55_ )
        #define UTL_STOPWORD asm(" .if (.MNEMONIC)\n ESTOP_1\n .else\n ESTOP_1()\n .endif\n NOP")
    #elif defined( _6x_ ) 
        #define UTL_STOPWORD asm( "    NOP\n    .word 0x10000000" )
    #else
        #define UTL_ASSERTCCS 0  /* unknown platform => no CCS breakpoint */
    #endif

    #if !defined( UTL_ASSERTCCS ) 
        #define UTL_ASSERTCCS 0
    #endif

    /* check if it's OK with the user to use CCS breakpoints for asserts() */
    #if UTL_ASSERTCCS == 0
        /* it is; define the UTL_assert macro */
        #define UTL_assert( expr )      \
            for (; !( expr ); )         \
                UTL_STOPWORD

    #else /* UTL_ASSERTCCS == 0 */  /* no Code Composer Studio here */
        #define UTL_assert( expr ) do {                                        \
            if ( !(expr) ) {  /* use UTL_error() to halt, prototyped below */  \
                UTL_error( "Assertion Violation: " __FILE__ ", line "          \
                    UTL_stringify(__LINE__) " (" UTL_stringify(expr) ")", 0 ); \
            }                                                                  \
        } while (0)
    #endif  /* UTL_ASSERTCCS */

    /*
     *  UTL_assertFunc() is meant for testing expressions with side effects,
     *  i.e. mostly for checking function calls. If enabled, behaves exactly
     *  the same as UTL_assert. If disabled, it is not expanded to nothing
     *  but to actual expression. E.g.,
     *  UTL_assertFunc( someFunc() == TRUE ); 
     *  If asserts are disabled, expands to
     *  (someFunc() == TRUE);
     */
    #define UTL_assertFunc UTL_assert
    
#else                       /* UTL_ASSERT */
    #define UTL_assert( expr )
    #define UTL_assertFunc( expr ) (expr)
#endif                      /* UTL_ASSERT */

/*
 *  Function prototype for UTL_error: place an error message (and up to 1 
 *  argument) into the BIOS system log, then halt the target. Can be used
 *  outside of UTL_assert() if someone needs it.
 */
extern Void UTL_error( String msg, Arg arg );

/*
 *  ======== UTL_stringify ========
 *  A utility macro that "stringifies" the macro argument x
 */
#define UTL_stringify(x)   _UTL_stringify(x)
#define _UTL_stringify(x)  #x


#ifdef __cplusplus
}
#endif /* extern "C" */

#endif /* UTL_ */