c60asm.i

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* ========================================================================= *
*                                                                           *
*   TEXAS INSTRUMENTS, INC.                                                 *
*                                                                           *
*   NAME                                                                    *
*       c60asm.i -- CALL/RET compatibility bridge for pre-4.30 tools         *
*                                                                           *
*   USAGE                                                                   *
*       Just .include at top of your source file.  Alternately, use         *
*       the compiler flag -ahi or -ahc to force inclusion in the            *
*       source-file.                                                        *
*                                                                           *
*   DESCRIPTION                                                             *
*       This file provides a set of pseudo-operations that are intended     *
*       to replace the "B" and "BNOP" branch instructions in certain        *
*       usage scenarios.  The point of the new pseudo-ops is to allow the   *
*       tools to provide more precise information to the profiler as to     *
*       the *purpose* of a branch, so that it can provide more accurate     *
*       profile data.                                                       *
*                                                                           *
*       Mnemonic    Purpose                                                 *
*       CALL        Calls to functions that will return to this function.   *
*       RET         Exiting (returning from) this function.                 *
*       CALLRET     Calling a function that will return on your behalf.     *
*       CALLNOP     Same as CALL, but with parallel NOPs (C64x only)        *
*       RETNOP      Same as RET, but with parallel NOPs (C64x only)         *
*       CRNOP       Same as CALLRET, but with parallel NOPs (C64x only)     *
*                                                                           *
*   NOTES                                                                   *
*       This file is actually just a compatibility shim, intended to        *
*       provide forward compatibility between tool versions < 4.30          *
*       and tool versions >= 4.30.  The purpose of this file it purely      *
*       compatibility.  Tool versions >= 4.30 are required to gain the      *
*       greater-precision information for the profiler.                     *
* ------------------------------------------------------------------------- *
*             Copyright (c) 2002 Texas Instruments, Incorporated.           *
*                            All Rights Reserved.                           *
* ========================================================================= *

* ========================================================================= *
* Create "asmver" with current version of assembler. Value is 0 if assembler
* version predates the predefined symbol.
* ========================================================================= *
           .if $isdefed("__TI_ASSEMBLER_VERSION__")
           .asg    __TI_ASSEMBLER_VERSION__, asmver
           .elseif $isdefed(".ASSEMBLER_VERSION")
           .asg    .ASSEMBLER_VERSION, asmver
           .else
           .asg    0, asmver
           .endif

* ========================================================================= *
* If the assembler version predates the support call mnemonics
* ========================================================================= *
           .if asmver < 430
           .asg    B,    CALL     ; Function Call
           .asg    B,    RET      ; Return from a Function
           .asg    B,    CALLRET  ; Function call with Call / Ret chaining.

           .asg    B,    call     ; Function Call
           .asg    B,    ret      ; Return from a Function
           .asg    B,    callret  ; Function call with Call / Ret chaining.

           .if .TMS320C6400
           .asg    BNOP, CALLNOP  ; C64x BNOP as a Fn. Call
           .asg    BNOP, RETNOP   ; C64x BNOP as a Fn. Return
           .asg    BNOP, CRNOP    ; C64x Fn call w/, Call/Ret chaining via BNOP.

           .asg    BNOP, callnop  ; C64x BNOP as a Fn. Call
           .asg    BNOP, retnop   ; C64x BNOP as a Fn. Return
           .asg    BNOP, crnop    ; C64x Fn call w/, Call/Ret chaining via BNOP.
           .endif

           .asg ";" , .asmfunc
           .asg ";" , .endasmfunc
           .endif