DevHlp_PerfSysTrace

Description

Record data to STRACE buffer.

This function writes software trace information to the STRACE buffer.

Parameters
Major code
Data length in bytes
Minor code
Data to be traced

Exit
Return code.

Assembly language

 ;       dh_PerfSysTrace - Record data to STRACE buffer.
 ;
 ;       This routine records data in the STRACE buffer.
 ;
 ;       ENTRY:  AX          = major code (0-255)
 ;               BX          = data length, in bytes (0-255)
 ;               CX          = minor code (0-255)
 ;               DS:SI = pointer to data
 ;
 ;       EXIT-NORMAL:   AX = 0  SOFTWARE TRACE DATA AREA MODIFIED
 ;
 ;       EXIT-ERROR:    AX = ERROR CODE
 ;
 ;  Uses C calling convention.  See DevHlp_SysTrace for example.
 ;
 ;

   MOV     AX,MajorCode                 ; major code for trace hook
   MOV     BX,TraceSize                 ; size of data
   MOV     CX,MinorCode                 ; minor code
   LDS     SI,TraceData                 ;
   MOV     DL,DevHlp_PerfSysTrace
   CALL    DevHlp

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