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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 . & lt ; F5 & gt ; 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 = cF2 > //This is to demo global var access.</span><span class=cF0>
< a name = " l9 " > < / a > < / span > < span class = cF2 > //Glbs defined elsewhere can accessed too, like counts.jiffies.</span><span class=cF0>
< a name = " l10 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > global_ona = < / span > < span class = cF5 > Freq2Ona < / span > < span class = cF0 > ( < / span > < span class = cFE > 400 < / span > < span class = cF0 > ) , global_ona_step = < / span > < span class = cFE > 10 < / span > < span class = cF0 > , global_ona_base = < / span > < span class = cF5 > Freq2Ona < / span > < span class = cF0 > ( < / span > < span class = cFE > 100 < / span > < span class = cF0 > ) ;
< a name = " l11 " > < / a >
< a name = " l12 " > < / a > < / span > < span class = cF1 > asm < / span > < span class = cF0 > {
< a name = " l13 " > < / 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 = " l14 " > < / a > < / span > < span class = cF2 > //See </span><a href="https://tomawezome.github.io/ZealOS/Compiler/OpCodes.html#l1"><span class=cF4>::/Compiler/OpCodes.DD</span></a><span class=cF2>.</span><span class=cF0>
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< a name = " l15 " > < / a >
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< a name = " l16 " > < / a > JIFFIES_MESSAGE : < / span > < span class = cF1 > DU8 < / span > < span class = cF0 > < / span > < span class = cF6 > & quot ; Jiffies : & quot ; < / span > < span class = cF0 > , < / span > < span class = cFE > 0 < / span > < span class = cF0 > ;
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< a name = " l17 " > < / a >
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< a name = " l18 " > < / a > < / span > < span class = cF2 > //See </span><a href="https://tomawezome.github.io/ZealOS/Kernel/StrA.html#l1"><span class=cF4>::/Kernel/StrA.CC</span></a><span class=cF2> and </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KUtils.html#l1"><span class=cF4>::/Kernel/KUtils.CC</span></a><span class=cF2>.</span><span class=cF0>
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< a name = " l19 " > < / a >
< a name = " l20 " > < / a > _BEEPS2 : :
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< a name = " l21 " > < / a > < / span > < span class = cF2 > //You can clobber RAX,RBX,RCX,RDX,R8,R9.</span><span class=cF0> </span><span class=cF2>The compiler expects that.</span><span class=cF0>
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< a name = " l22 " > < / a > < / span > < span class = cF2 > //See </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.html#l1935"><span class=cF4>REGG_CLOBBERED</span></a><span class=cF2> and </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.html#l1937"><span class=cF4>REGG_STACK_TMP</span></a><span class=cF2>.</span><span class=cF0>
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< a name = " l23 " > < / a > < / span > < span class = cF1 > PUSH < / span > < span class = cF0 > < / span > < span class = cFC > RBP < / span > < span class = cF0 >
< a name = " l24 " > < / 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 >
< a name = " l25 " > < / 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://tomawezome.github.io/ZealOS/Kernel/KernelA.html#l714"><span class=cF4>SF_ARG1</span></a><span class=cF0>
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< a name = " l26 " > < / a >
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< a name = " l27 " > < / a > < / span > < span class = cF1 > PUSH < / span > < span class = cF0 > < / span > < span class = cF9 > U64 < / span > < span class = cF0 > [ & amp ; < / span > < span class = cFB > counts < / span > < span class = cF0 > . jiffies ]
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< a name = " l28 " > < / a >
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< a name = " l29 " > < / 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 = " l30 " > < / a > < / span > < span class = cF2 > //U0 </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KMisc.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 = " l31 " > < / 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 = " l32 " > < / a > < / span > < span class = cF1 > PUSH < / span > < span class = cF0 > < / span > < span class = cF9 > U64 < / span > < span class = cF0 > [ & amp ; global_ona ] < / span > < span class = cF2 > //evaluated at run time</span><span class=cF0>
< a name = " l33 " > < / a > < / span > < span class = cF1 > CALL < / span > < span class = cF0 > & amp ; < / span > < span class = cF5 > Beep < / span > < span class = cF0 >
< a name = " l34 " > < / a > < / span > < span class = cF1 > POP < / span > < span class = cF0 > < / span > < span class = cFC > RCX < / span > < span class = cF0 >
< a name = " l35 " > < / a > < / span > < span class = cF1 > LOOP < / span > < span class = cF0 > @ @ 05
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< a name = " l36 " > < / a >
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< a name = " l37 " > < / a > < / span > < span class = cF1 > PUSH < / span > < span class = cF0 > < / span > < span class = cFC > RSI < / span > < span class = cF0 > < / span > < span class = cF2 > //See </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.html#l1938"><span class=cF4>REGG_LOCAL_VARS</span></a><span class=cF2> & </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.html#l1939"><span class=cF4>REGG_LOCAL_NON_PTR_VARS</span></a><span class=cF0>
< a name = " l38 " > < / a > < / span > < span class = cF1 > MOV < / span > < span class = cF0 > < / span > < span class = cFC > RSI < / span > < span class = cF0 > , JIFFIES_MESSAGE
< a name = " l39 " > < / a > < / span > < span class = cF1 > CALL < / span > < span class = cF0 > < / span > < span class = cFD > PUT_STR < / span > < span class = cF0 >
< a name = " l40 " > < / a > < / span > < span class = cF1 > POP < / span > < span class = cF0 > < / span > < span class = cFC > RSI < / span > < span class = cF0 >
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< a name = " l41 " > < / a >
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< a name = " l42 " > < / a > < / span > < span class = cF1 > POP < / span > < span class = cF0 > < / span > < span class = cFC > RAX < / span > < span class = cF0 >
< a name = " l43 " > < / a > < / span > < span class = cF1 > SUB < / span > < span class = cF0 > < / span > < span class = cFC > RAX < / span > < span class = cF0 > , < / span > < span class = cF9 > U64 < / span > < span class = cF0 > [ & amp ; < / span > < span class = cFB > counts < / span > < span class = cF0 > . jiffies ]
< a name = " l44 " > < / a > < / span > < span class = cF1 > NEG < / span > < span class = cF0 > < / span > < span class = cFC > RAX < / span > < span class = cF0 >
< a name = " l45 " > < / a > < / span > < span class = cF1 > CALL < / span > < span class = cF0 > < / span > < span class = cFD > PUT_HEX_U64 < / span > < span class = cF0 >
< a name = " l46 " > < / a > < / span > < span class = cF1 > MOV < / span > < span class = cF0 > < / span > < span class = cFC > RAX < / span > < span class = cF0 > , < / span > < span class = cF6 > ' \n ' < / span > < span class = cF0 >
< a name = " l47 " > < / a > < / span > < span class = cF1 > CALL < / span > < span class = cF0 > < / span > < span class = cFD > PUT_CHARS < / span > < span class = cF0 >
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< a name = " l48 " > < / a >
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< a name = " l49 " > < / a > < / span > < span class = cF1 > POP < / span > < span class = cF0 > < / span > < span class = cFC > RBP < / span > < span class = cF0 >
< a name = " l50 " > < / a > < / span > < span class = cF1 > RET1 < / span > < span class = cF0 > < / span > < span class = cFE > 8 < / span > < span class = cF0 >
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< a name = " l51 " > < / a > }
< a name = " l52 " > < / a >
< a name = " l53 " > < / a > < / span > < span class = cF2 > //The convention is to put an underscore</span><span class=cF0>
< a name = " l54 " > < / a > < / span > < span class = cF2 > //on C callable asm routines.</span><span class=cF0>
< a name = " l55 " > < / a > < / span > < span class = cF1 > _extern < / span > < span class = cF0 > _BEEPS2 < / span > < span class = cF1 > U0 < / span > < span class = cF0 > Beeps2 ( < / span > < span class = cF9 > I64 < / span > < span class = cF0 > count ) ;
< a name = " l56 " > < / a >
< a name = " l57 " > < / a > < / span > < span class = cF1 > U0 < / span > < span class = cF0 > AsmAndC2 ( )
< a name = " l58 " > < / a > {
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< a name = " l59 " > < / a > < / span > < span class = cF9 > I64 < / span > < span class = cF0 > < / span > < span class = cF1 > reg < / span > < span class = cF0 > < / span > < span class = cFC > R15 < / span > < span class = cF0 > i ;
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< a name = " l60 " > < / a >
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< a name = " l61 " > < / a > i = < / span > < span class = cF5 > I64Get < / span > < span class = cF0 > ( < / span > < span class = cF6 > & quot ; $ PURPLE $ \ n \ nNum of beeps 1 - 5 ( % d ) : $ FG $ & quot ; < / 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 = " l62 " > < / a > Beeps2 ( i ) ;
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< a name = " l63 " > < / a >
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< a name = " l64 " > < / a > < / span > < span class = cF1 > asm < / span > < span class = cF0 > < / span > < span class = cF7 > { < / span > < span class = cF0 >
< a name = " l65 " > < / a > < / span > < span class = cF1 > LIST < / span > < span class = cF0 >
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< a name = " l66 " > < / a > < / span > < span class = cF2 > //You can clobber RAX,RBX,RCX,RDX, but preserve the rest.</span><span class=cF0>
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< a name = " l67 " > < / a > < / span > < span class = cF1 > MOV < / span > < span class = cF0 > < / span > < span class = cFC > RCX < / span > < span class = cF0 > , < / span > < span class = cFC > R15 < / span > < span class = cF0 > < / span > < span class = cF2 > //You can clobber RAX,RBX,RCX,RDX. Preserve the rest.</span><span class=cF0>
< a name = " l68 " > < / 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 = " l69 " > < / a >
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< a name = " l70 " > < / a > < / span > < span class = cF2 > //U0 </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KMisc.html#l129"><span class=cF4>Sound</span></a><span class=cF2>(I8 ona);</span><span class=cF0>
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< a name = " l71 " > < / 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+100.0Hz</span><span class=cF0>
< a name = " l72 " > < / a > < / span > < span class = cF1 > IMUL2 < / span > < span class = cF0 > < / span > < span class = cFC > RAX < / span > < span class = cF0 > , global_ona_step < / span > < span class = cF2 > //Intentionally evaluated at compile time</span><span class=cF0>
< a name = " l73 " > < / a > < / span > < span class = cF1 > ADD < / span > < span class = cF0 > < / span > < span class = cFC > RAX < / span > < span class = cF0 > , < / span > < span class = cF9 > U64 < / span > < span class = cF0 > [ & amp ; global_ona_base ] < / span > < span class = cF2 > //Intentionally evaluated at run time</span><span class=cF0>
< a name = " l74 " > < / a > < / span > < span class = cF1 > PUSH < / span > < span class = cF0 > < / span > < span class = cFC > RAX < / span > < span class = cF0 >
< a name = " l75 " > < / a > < / span > < span class = cF1 > CALL < / span > < span class = cF0 > & amp ; < / span > < span class = cF5 > Sound < / span > < span class = cF0 > < / span > < span class = cF2 > //We can skip IMPORT with & if JIT compiling.</span><span class=cF0>
< a name = " l76 " > < / 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 & gt ; & gt ; < / 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>
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< a name = " l77 " > < / a > @ @ 10 : < / span > < span class = cF1 > LOOP < / span > < span class = cF0 > @ @ 10
< a name = " l78 " > < / a >
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< a name = " l79 " > < / a > < / span > < span class = cF1 > POP < / span > < span class = cF0 > < / span > < span class = cFC > RCX < / span > < span class = cF0 >
< a name = " l80 " > < / a > < / span > < span class = cF1 > LOOP < / span > < span class = cF0 > @ @ 05
< a name = " l81 " > < / a > < / span > < span class = cF7 > } < / span > < span class = cF0 >
< a name = " l82 " > < / a > < / span > < span class = cF5 > Sound < / span > < span class = cF0 > ;
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< a name = " l83 " > < / a > }
< a name = " l84 " > < / a >
< a name = " l85 " > < / a > AsmAndC2 ;
< / span > < / pre > < / body >
< / html >