/*Asm labels can only be defined once
in a task.  <F5> will spawn a new task
each time, so you don't get redefine
error, like when repeatedly #including
it from the cmd line.
*/

//This is to demo glbl var access.
//Glbs defined elsewhere can accessed too, like cnts.jiffies.
I64 glbl_ona=Freq2Ona(400),glbl_ona_step=10,glbl_ona_base=Freq2Ona(100);

asm {
//Opcodes are slightly different to make writing my x86_64 assembler easier.
//See ::/Compiler/OpCodes.DD.

JIFFIES_MSG:    DU8 "Jiffies:",0;

//See ::/Kernel/StrA.HC and ::/Kernel/KUtils.HC.

_BEEPS2::
//You can clobber RAX,RBX,RCX,RDX,R8,R9.  The compiler expects that.
//See REGG_CLOBBERED and REGG_STK_TMP.
        PUSH    RBP
        MOV     RBP,RSP
        MOV     RCX,U64 SF_ARG1[RBP] //SF_ARG1

        PUSH    U64 [&cnts.jiffies]

@@05:   PUSH    RCX
//U0 Beep(I8 ona=62,Bool busy=FALSE)
        PUSH    FALSE   //Do not busy (spin) wait
        PUSH    U64 [&glbl_ona] //evaluated at run time
        CALL    &Beep
        POP     RCX
        LOOP    @@05

        PUSH    RSI     //See REGG_LOCAL_VARS & REGG_LOCAL_NON_PTR_VARS
        MOV     RSI,JIFFIES_MSG
        CALL    PUT_STR
        POP     RSI

        POP     RAX
        SUB     RAX,U64 [&cnts.jiffies]
        NEG     RAX
        CALL    PUT_HEX_U64
        MOV     RAX,'\n'
        CALL    PUT_CHARS

        POP     RBP
        RET1    8
}

//My convention is to put an underscore
//on C callable asm routines.
_extern _BEEPS2 U0 Beeps2(I64 cnt);

U0 AsmAndC2()
{
  I64 reg R15 i;

  i=GetI64("$PURPLE$\n\nNum of beeps 1-5 (%d):$FG$",3,1,5);
  Beeps2(i);

  asm {
    LIST
//You can clobber RAX,RBX,RCX,RDX, but preserve the rest.
    MOV RCX,R15 //You can clobber RAX,RBX,RCX,RDX. Preserve the rest.
    @@05:       PUSH    RCX

//U0 Snd(I8 ona);
    MOV RAX,RCX //ona=loop*10+100.0Hz
    IMUL2       RAX,glbl_ona_step //Intentionally evaluated at compile time
    ADD RAX,U64 [&glbl_ona_base]  //Intentionally evaluated at run time
    PUSH        RAX
    CALL        &Snd    //We can skip IMPORT with & if JIT compiling.
    MOV RCX,cnts.time_stamp_freq>>3 //JIT Const.  Simple delay loop.
@@10:   LOOP    @@10

    POP RCX
    LOOP        @@05
  }
  Snd;
}

AsmAndC2;