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< a name = "l1" > < / a > < span class = cF2 > /*Asm labels can only be defined once< / span > < span class = cF0 >
< a name = "l2" > < / a > < / span > < span class = cF2 > in a task. < F5> will spawn a new task< / span > < span class = cF0 >
< a name = "l3" > < / a > < / span > < span class = cF2 > each time, so you don't get redefine< / span > < span class = cF0 >
< a name = "l4" > < / a > < / span > < span class = cF2 > error, like when repeatedly #including< / span > < span class = cF0 >
< a name = "l5" > < / a > < / span > < span class = cF2 > it from the cmd line.< / span > < span class = cF0 >
< a name = "l6" > < / a > < / span > < span class = cF2 > */< / span > < span class = cF0 >
< a name = "l7" > < / a >
< a name = "l8" > < / a > < / span > < span class = cF1 > asm< / span > < span class = cF0 > {
< a name = "l9" > < / a > < / span > < span class = cF2 > //Opcodes are slightly different to make writing the x86_64 assembler easier.< / span > < span class = cF0 >
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< a name = "l10" > < / a > < / span > < span class = cF2 > //See < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Compiler/OpCodes.DD.html#l1" > < span class = cF4 > ::/Compiler/OpCodes.DD< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 >
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< a name = "l11" > < / a >
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< a name = "l12" > < / a > < / span > < span class = cF1 > IMPORT< / span > < span class = cF0 > < / span > < span class = cF5 > Beep< / span > < span class = cF0 > ;
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< a name = "l13" > < / a >
< a name = "l14" > < / a > _BEEPS::
< a name = "l15" > < / a > < / span > < span class = cF2 > //You can always clobber RAX,RBX,RCX,RDX,R8,R9. The compiler expects that.< / span > < span class = cF0 >
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< a name = "l16" > < / a > < / span > < span class = cF2 > //See < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l1936" > < span class = cF4 > REGG_CLOBBERED< / span > < / a > < span class = cF2 > and < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l1938" > < span class = cF4 > REGG_STACK_TMP< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 >
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< a name = "l17" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > RBP< / span > < span class = cF0 >
< a name = "l18" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > RBP< / span > < span class = cF0 > , < / span > < span class = cFC > RSP< / span > < span class = cF0 >
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< a name = "l19" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > RCX< / span > < span class = cF0 > , < / span > < span class = cF9 > U64< / span > < span class = cF0 > < / span > < span class = cF3 > SF_ARG1< / span > < span class = cF0 > [< / span > < span class = cFC > RBP< / span > < span class = cF0 > ] < / span > < span class = cF2 > //< / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l715" > < span class = cF4 > SF_ARG1< / span > < / a > < span class = cF0 >
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< a name = "l20" > < / a >
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< a name = "l21" > < / a > @@05: < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > RCX< / span > < span class = cF0 >
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< a name = "l22" > < / a > < / span > < span class = cF2 > //U0 < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/KMisc.CC.html#l200" > < span class = cF4 > Beep< / span > < / a > < span class = cF2 > (I8 ona=62,Bool busy=FALSE)< / span > < span class = cF0 >
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< a name = "l23" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cF3 > FALSE< / span > < span class = cF0 > < / span > < span class = cF2 > //Do not busy (spin) wait< / span > < span class = cF0 >
< a name = "l24" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFE > 62< / span > < span class = cF0 > < / span > < span class = cF2 > //500 Hz< / span > < span class = cF0 >
< a name = "l25" > < / a > < / span > < span class = cF1 > CALL< / span > < span class = cF0 > < / span > < span class = cF5 > Beep< / span > < span class = cF0 >
< a name = "l26" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > RCX< / span > < span class = cF0 >
< a name = "l27" > < / a > < / span > < span class = cF1 > LOOP< / span > < span class = cF0 > @@05
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< a name = "l28" > < / a >
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< a name = "l29" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > RBP< / span > < span class = cF0 >
< a name = "l30" > < / a > < / span > < span class = cF1 > RET1< / span > < span class = cF0 > < / span > < span class = cFE > 8< / span > < span class = cF0 > < / span > < span class = cF2 > //Use special return. Pop one arg off of stack.< / span > < span class = cF0 >
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< a name = "l31" > < / a >
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< a name = "l32" > < / a > < / span > < span class = cF2 > //CosmiC return vals are in RAX.< / span > < span class = cF0 > < / span > < span class = cF2 > This function has no return value.< / span > < span class = cF0 >
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< a name = "l33" > < / a > }
< a name = "l34" > < / a >
< a name = "l35" > < / a > < / span > < span class = cF2 > //_extern binds a asm sym to a function.< / span > < span class = cF0 >
< a name = "l36" > < / a > < / span > < span class = cF2 > //The convention is to put an underscore< / span > < span class = cF0 >
< a name = "l37" > < / a > < / span > < span class = cF2 > //on C callable asm routines.< / span > < span class = cF0 >
< a name = "l38" > < / a > < / span > < span class = cF1 > _extern< / span > < span class = cF0 > _BEEPS < / span > < span class = cF1 > U0< / span > < span class = cF0 > Beeps(< / span > < span class = cF9 > I64< / span > < span class = cF0 > count);
< a name = "l39" > < / a >
< a name = "l40" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > AsmAndC1()
< a name = "l41" > < / a > {
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< a name = "l42" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > < / span > < span class = cF1 > noreg< / span > < span class = cF0 > i; < / span > < span class = cF2 > //Normally this would be stored in a reg< / span > < span class = cF0 >
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< a name = "l43" > < / a > < / span > < span class = cF2 > //Check by unassembling with < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/System/Debug.CC.html#l330" > < span class = cF4 > Uf< / span > < / a > < span class = cF2 > (" AsmAndC1" ).< / span > < span class = cF0 >
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< a name = "l44" > < / a >
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< a name = "l45" > < / a > i = < / span > < span class = cF5 > I64Get< / span > < span class = cF0 > (< / span > < span class = cF6 > " Num of beeps 1-5 (%d):" < / span > < span class = cF0 > , < / span > < span class = cFE > 3< / span > < span class = cF0 > , < / span > < span class = cFE > 1< / span > < span class = cF0 > , < / span > < span class = cFE > 5< / span > < span class = cF0 > );
< a name = "l46" > < / a > Beeps(i);
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< a name = "l47" > < / a >
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< a name = "l48" > < / a > < / span > < span class = cF1 > asm< / span > < span class = cF0 > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l49" > < / a > < / span > < span class = cF2 > //You can clobber RAX,RBX,RCX,RDX.< / span > < span class = cF0 > < / span > < span class = cF2 > The compiler expects that.< / span > < span class = cF0 >
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< a name = "l50" > < / a >
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< a name = "l51" > < / a > < / span > < span class = cF1 > IMPORT< / span > < span class = cF0 > < / span > < span class = cF5 > Sound< / span > < span class = cF0 > ; < / span > < span class = cF2 > //Import an not use & or don't import and use & Sound.< / span > < span class = cF0 >
< a name = "l52" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > RCX< / span > < span class = cF0 > , & i[< / span > < span class = cFC > RBP< / span > < span class = cF0 > ] < / span > < span class = cF2 > //You can clobber RAX,RBX,RCX,RDX.< / span > < span class = cF0 >
< a name = "l53" > < / a > < / span > < span class = cF2 > //You better preserve the rest.< / span > < span class = cF0 >
< a name = "l54" > < / a > @@05: < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > RCX< / span > < span class = cF0 >
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< a name = "l55" > < / a >
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< a name = "l56" > < / a > < / span > < span class = cF2 > //U0 < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/KMisc.CC.html#l129" > < span class = cF4 > Sound< / span > < / a > < span class = cF2 > (I8 ona);< / span > < span class = cF0 >
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< a name = "l57" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > RAX< / span > < span class = cF0 > , < / span > < span class = cFC > RCX< / span > < span class = cF0 > < / span > < span class = cF2 > //ona=loop*10+50< / span > < span class = cF0 >
< a name = "l58" > < / a > < / span > < span class = cF1 > IMUL2< / span > < span class = cF0 > < / span > < span class = cFC > RAX< / span > < span class = cF0 > , < / span > < span class = cFE > 10< / span > < span class = cF0 > < / span > < span class = cF2 > //ZealOS uses nonstandard opcodes< / span > < span class = cF0 >
< a name = "l59" > < / a > < / span > < span class = cF2 > //to avoid multiple form of the same one.< / span > < span class = cF0 >
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< a name = "l60" > < / a > < / span > < span class = cF2 > //See < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Compiler/OpCodes.DD.html#l1" > < span class = cF4 > ::/Compiler/OpCodes.DD< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 >
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< a name = "l61" > < / a > < / span > < span class = cF1 > ADD< / span > < span class = cF0 > < / span > < span class = cFC > RAX< / span > < span class = cF0 > , < / span > < span class = cFE > 40< / span > < span class = cF0 >
< a name = "l62" > < / a > < / span > < span class = cF1 > PUSH< / span > < span class = cF0 > < / span > < span class = cFC > RAX< / span > < span class = cF0 >
< a name = "l63" > < / a > < / span > < span class = cF1 > CALL< / span > < span class = cF0 > < / span > < span class = cF5 > Sound< / span > < span class = cF0 >
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< a name = "l64" > < / a >
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< a name = "l65" > < / a > < / span > < span class = cF1 > MOV< / span > < span class = cF0 > < / span > < span class = cFC > RCX< / span > < span class = cF0 > , < / span > < span class = cFB > counts< / span > < span class = cF0 > .time_stamp_freq > > < / span > < span class = cFE > 3< / span > < span class = cF0 > < / span > < span class = cF2 > //JIT Const.< / span > < span class = cF0 > < / span > < span class = cF2 > Simple delay loop< / span > < span class = cF0 >
< a name = "l66" > < / a > @@10: < / span > < span class = cF1 > LOOP< / span > < span class = cF0 > @@10
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< a name = "l67" > < / a >
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< a name = "l68" > < / a > < / span > < span class = cF1 > POP< / span > < span class = cF0 > < / span > < span class = cFC > RCX< / span > < span class = cF0 >
< a name = "l69" > < / a > < / span > < span class = cF1 > LOOP< / span > < span class = cF0 > @@05
< a name = "l70" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l71" > < / a > < / span > < span class = cF5 > Sound< / span > < span class = cF0 > ;
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< a name = "l72" > < / a >
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< a name = "l73" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > i;
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< a name = "l74" > < / a > }
< a name = "l75" > < / a >
< a name = "l76" > < / a > < / span > < span class = cF6 > " Beeps:%d\n" < / span > < span class = cF0 > , AsmAndC1;
< / span > < / pre > < / body >
< / html >
