<SPAN style="FONT-SIZE: 9pt; COLOR: darkorange">一、內(nèi)聯(lián)匯編的優(yōu)缺點(diǎn)</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN>4 `1 D. s6 k% G3 L5 R
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 因?yàn)樵赩isual C++中使用內(nèi)聯(lián)匯編不需要額外的編譯器和聯(lián)接器，且可以處理Visual C++中不能處理的一些事情，而且可以使用在C/C++中的變量，所以非常方便。內(nèi)聯(lián)匯編主要用于如下場(chǎng)合: <o:p></o:p></SPAN></P>
4 `, N1 |$ A6 ]2 ~/ }<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 1.使用匯編語(yǔ)言寫(xiě)函數(shù)；<BR> 2.對(duì)速度要求非常高的代碼；<BR> 3.設(shè)備驅(qū)動(dòng)程序中直接訪問(wèn)硬件；<BR> 4."Naked" Call的初始化和結(jié)束代碼。<BR> //(."Naked"，理解了意思，但是不知道怎么翻譯^_^，大概就是不需要C/C++的編譯器(自作聰明)生成的函數(shù)初始化和收尾代碼，請(qǐng)參看MSDN的"Naked <I>function</I>s"的說(shuō)明)<o:p></o:p></SPAN></P>) p4 G/ S3 e: k8 Z
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 內(nèi)聯(lián)匯編代碼不易于移植，如果你的程序打算在不同類(lèi)型的機(jī)器（比如x86和Alpha）上運(yùn)行，應(yīng)當(dāng)盡量避免使用內(nèi)聯(lián)匯編。這時(shí)候你可以使用MASM，因?yàn)镸ASM支持更方便的的宏指令和數(shù)據(jù)指示符。<o:p></o:p></SPAN></P>. s) x1 l9 u6 R4 Q
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: darkorange">二、內(nèi)聯(lián)匯編關(guān)鍵字</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>
, }3 J* e2 t) o. K+ r: l8 }+ ?<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 在Visual C++使用內(nèi)聯(lián)匯編用到的是__asm關(guān)鍵字，這個(gè)關(guān)鍵字有兩種使用方法: <o:p></o:p></SPAN></P>
9 X4 `- q$ @* j( U<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 1.簡(jiǎn)單__asm塊 <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">AL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 2 <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">DX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 0xD007 <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">OUT</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">AL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">DX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> }<o:p></o:p></SPAN></P>
+ \2 P6 a# K' K, q0 ~( y<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 2.在每條匯編指令之前加__asm關(guān)鍵字 <o:p></o:p></SPAN></P>/ G/ s: D2 K0 a# C' o S( g
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">AL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 2 <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">DX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 0xD007 <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">OUT</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">AL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">DX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <o:p></o:p></SPAN></P>: U7 n% r6 p- }9 z
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 因?yàn)開(kāi)_asm關(guān)鍵字是語(yǔ)句分隔符，因此你可以把匯編指令放在同一行: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">AL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 2 __asm </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">DX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 0XD007 __asm </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">OUT</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">AL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">DX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <o:p></o:p></SPAN></P>" t$ [& J$ s9 ]9 w
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 顯然，第一種方法和C/C++的風(fēng)格很一致，并且有很多其它優(yōu)點(diǎn)，因此推薦使用第一種方法。 <o:p></o:p></SPAN></P>
; h) n3 Q: P8 E; V<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 不象在C/C++中的"{}"，__asm塊的"{}"不會(huì)影響C/C++變量的作用范圍。同時(shí)，__asm塊可以嵌套，嵌套也不會(huì)影響變量的作用范圍。<o:p></o:p></SPAN></P>
5 z& e) `( O Q C/ M3 }: |<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: darkorange">三、在<SPAN lang=EN-US>__asm塊中使用匯編語(yǔ)言</SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>6 Y B1 C8 ?' t, ~+ B9 _& C8 S
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 1.內(nèi)聯(lián)匯編指令集 <BR> 內(nèi)聯(lián)匯編完全支持的Intel 486指令集，允許使用MMX指令。不支持的指令可以使用_EMIT偽指令定義(_EMIT偽指令說(shuō)明見(jiàn)下文)。 <o:p></o:p></SPAN></P>
' B4 d1 C6 p T5 l% c<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 2.MASM表達(dá)式 <BR> 內(nèi)聯(lián)匯編可以使用MASM中的表達(dá)式。比如: MOV EAX, 1。 <o:p></o:p></SPAN></P>: d- m3 }: i N5 }
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 3.數(shù)據(jù)指示符和操作符 <BR> 雖然__asm塊中允許使用C/C++的數(shù)據(jù)類(lèi)型和對(duì)象，但它不能用MASM指示符和操作符定義數(shù)據(jù)對(duì)象。這里特別指出，__asm塊中不允許MASM中的定義指示符: DB、DW、DD、DQ、DT和DF，也不允許DUP和THIS操作符。MASM結(jié)構(gòu)和記錄也不再有效，內(nèi)聯(lián)匯編不接受STRUC、RECORD、WIDTH或者M(jìn)ASK。 <o:p></o:p></SPAN></P>
( P/ V+ T7 x2 m% S) ~4 i<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 4.EVEN和ALIGN指示符 <BR> 盡管內(nèi)聯(lián)匯編不支持大多數(shù)MASM指示符，但它支持EVEN和ALIGN，當(dāng)需要的時(shí)候，這些指示符在匯編代碼里面加入NOP(空操作)指令使標(biāo)號(hào)對(duì)齊到特定邊界。這樣可以使某些處理器取指令時(shí)具有更高的效率。 <o:p></o:p></SPAN></P>
# u" g; N: J3 w# G) {+ Q6 K<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 5.MASM宏指示符 <BR> 內(nèi)聯(lián)匯編不是宏匯編，不能使用MASM宏指示符(MACRO、REPT、IRC、IRP和ENDM)和宏操作符(<>、!、&、%和.TYPE)。 <o:p></o:p></SPAN></P>% `, f o* R* A% @7 e5 N
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 6.段說(shuō)明 <BR> 必須使用寄存器來(lái)說(shuō)明段，跨越段必須顯式地說(shuō)明，如ES:[BX]。 <o:p></o:p></SPAN></P>
3 k0 F4 E# K# d0 G2 X# f4 z<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 7.類(lèi)型和變量大小 <BR> 我們可以使用LENGTH來(lái)取得C/C++中的數(shù)組中的元素個(gè)數(shù)，如果不是一個(gè)數(shù)組，則結(jié)果為一。使用SIZE來(lái)取得C/C++中變量的大小，一個(gè)變量的大小是LENGTH和TYPE的乘積。TYPE用來(lái)取得一個(gè)變量的大小，如果是一個(gè)數(shù)組，它得到的一個(gè)數(shù)組中的單個(gè)元素的大小。 <o:p></o:p></SPAN></P>
5 G/ O* D( Z& E! r<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 8.注釋 <BR> 可以使用C/C++的注釋?zhuān)扑]用ASM的注釋?zhuān)?quot;;"號(hào)。 <o:p></o:p></SPAN></P>% Z) J6 C# i' j0 t) \5 U2 J
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 9._EMIT偽指令 <BR> _EMIT偽指令相當(dāng)于MASM中的DB，但一次只能定義一個(gè)字節(jié)，比如: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JMP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _CodeOfAsm <o:p></o:p></SPAN></P>
0 w+ r# \7 c* ]2 G" Z3 w3 W<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _EMIT 0x00 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 定義混合在代碼段的數(shù)據(jù) </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> _EMIT 0x01 <o:p></o:p></SPAN></P>
# p5 X) [3 c% @<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _CodeOfAsm: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 這里是代碼 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> _EMIT 0x90 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; NOP指令 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> }<o:p></o:p></SPAN></P>0 L, E* a) y$ j& y X% w
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: darkorange">四、在<SPAN lang=EN-US>__asm塊中使用C/C++語(yǔ)言元素</SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>4 Q3 u" O# H: l
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> C/C++與匯編可以混合使用，在內(nèi)聯(lián)匯編可以使用C/C++的變量和很多其它C/C++的元素。在__asm塊中可以使用以下C/C++元素: <o:p></o:p></SPAN></P>1 t: c$ t K) ^' d' E
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 1.符號(hào)，包括標(biāo)號(hào)、變量和函數(shù)名； <o:p></o:p></SPAN></P>
# L8 e6 V1 Q, Q" U7 r M<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 2.常量，包括符號(hào)常量和枚舉型(enum)成員； <o:p></o:p></SPAN></P>2 E" W* _) H) Y
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 3.宏定義和預(yù)處理指示符； <o:p></o:p></SPAN></P>, f7 s# G0 e1 H: O" F
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 4.注釋?zhuān)?quot;/**/"和"//"； <o:p></o:p></SPAN></P>
5 b/ ~% y9 L. |1 g<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 5.類(lèi)型名，包括所有MASM中合法的類(lèi)型 <o:p></o:p></SPAN></P>4 X0 k$ y9 ?' Y) O/ g# k
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 6.typedef名稱(chēng)， 像PTR、TYPE、特定的結(jié)構(gòu)成員或枚舉成員這樣的通用操作符。 <o:p></o:p></SPAN></P>
7 ^" @( H; ]* J! T) X<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 在__asm塊中，可以使用C/C++或ASM的基數(shù)計(jì)數(shù)法(比如: 0x100和100H是相等的)。 <o:p></o:p></SPAN></P>
2 r: s" O3 { ~( ]* U<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> __asm塊中不能使用像<<一類(lèi)的C/C++操作符。C/C++和MASM通用的操作符，比如"*"和"[]"操作符，都被認(rèn)為是匯編語(yǔ)言的操作符。舉個(gè)例子: <o:p></o:p></SPAN></P>
3 U; x: P+ g1 B: \, p<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> array[[10]]; <o:p></o:p></SPAN></P>+ z# p+ Y9 k7 R, ?) O8 G
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> array[[6]], </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">BX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> ; Store </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">BX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> at array+6 (</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">not</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> scaled) <o:p></o:p></SPAN></P>
% q+ R8 e& {. X5 |" W<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> array[[6]] = 0; </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">/* Store 0 at array+12 (scaled) */</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <o:p></o:p></SPAN></P>3 C5 X# D5 m1 U- H( L
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> * 小技巧: 內(nèi)聯(lián)匯編中，你可以使用TYPE操作符使作其與C一致。比如，下面兩條語(yǔ)句是一樣的: <o:p></o:p></SPAN></P>' U0 C7 e$ g8 c7 {' B0 V) T$ j8 K
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> array[[6 * TYPE </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> ], 0 ; Store 0 at array + 12 <o:p></o:p></SPAN></P>* E& ]% p$ d+ z
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> array[[6]] = 0; </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">/* Store 0 at array + 12 */</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <o:p></o:p></SPAN></P>$ b( y" E2 p2 w8 ]& i* p5 k
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 內(nèi)聯(lián)匯編能通過(guò)變兩名直接引用C/C++的變量。__asm塊中可以引用任何符號(hào)，包括變量名。 <o:p></o:p></SPAN></P>, k9 F; B0 K+ h3 x3 {5 j- K
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 如果C/C++中的類(lèi)、結(jié)構(gòu)或者枚舉成員具有唯一的名稱(chēng)，如果在"."操作符之前不指定變量或者typedef名稱(chēng)，則__asm塊中只能引用成員名稱(chēng)。然而，如果成員不是唯一的，你必須在"."操作符之前加上變量名或typedef名稱(chēng)。例如，下面的兩個(gè)結(jié)構(gòu)都具有same_name這個(gè)成員變量: <o:p></o:p></SPAN></P>* f; F% [5 Z' U7 d" y
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">struct</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> first_type <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">char</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> *weasel; <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> same_name; <BR> }; <o:p></o:p></SPAN></P>0 q& K- ^/ r+ T
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">struct</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> second_type <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> wonton; <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">long</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> same_name; <BR> }; <o:p></o:p></SPAN></P>* {- i& V% K, ~/ F( U
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 如果按下面聲明變量: <o:p></o:p></SPAN></P>
$ Y* V- Z. ^7 E2 G2 k+ w<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">struct</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> first_type hal; <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">struct</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> second_type oat; <o:p></o:p></SPAN></P>: E* o6 Q. v' w* a+ I
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 那么，所有引用same_name成員的地方都必須使用變量名，因?yàn)閟ame_name不是唯一的。另外，上面的weasel變量具有唯一的名稱(chēng)，你可以?xún)H僅使用它的成員名稱(chēng)來(lái)引用它: <o:p></o:p></SPAN></P>
7 w5 d- H ?, T<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, OFFSET hal <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, [</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">]hal.same_name </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 必須使用 'hal'</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ESI</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, [</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">].weasel </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 可以省略 'hal'</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> } <o:p></o:p></SPAN></P>
, Q7 B; J* \+ A5 J<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 注意，省略了變量名僅僅是為了寫(xiě)代碼的方便，生成的匯編指令的還是一樣的。 <o:p></o:p></SPAN></P>
) h$ S/ l+ r* x+ z' q2 w b<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 可以不受限制地訪問(wèn)C++成員變量，但是不能調(diào)用C++的成員函數(shù)。<o:p></o:p></SPAN></P>
$ m% r* ?# t- T) ^$ T5 e) w<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: darkorange">五、寄存器使用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>
" E* V- G: f g* z: J/ f<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 一般來(lái)說(shuō)，在__asm塊開(kāi)始的時(shí)候，寄存器是空的，不能在兩個(gè)__asm之間保存寄存器的值。(這是MSDN上說(shuō)的，我在實(shí)際使用時(shí)發(fā)現(xiàn)，好像并不是這樣。不過(guò)它是說(shuō)"一般"，我是特殊:)) <o:p></o:p></SPAN></P>
# H# ~$ f6 a1 ?4 K# C4 F9 B<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 如果一個(gè)函數(shù)被聲明成了__fastcall，則其參數(shù)將放在寄存器中，這將給寄存器的管理帶來(lái)問(wèn)題。所以，如果要將一個(gè)函數(shù)聲明成__fastcall，必須保存ECX寄存器。為了避免以上的沖突，在聲明為_(kāi)_fastcall的函數(shù)中不要有__asm塊。如果用了/Gr編譯選項(xiàng)(它全局的變成__fastcall)，將每個(gè)函數(shù)聲明成__cdecl或者_(dá)_stdcall，這個(gè)屬性告訴編譯器用傳統(tǒng)的C方法。 <o:p></o:p></SPAN></P>
}6 P: N+ }6 `1 `<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 如果使用EAX、EBX、ECX、EDX、ESI和EDI寄存器，你不需要保存它；但如果你用到了DS、 SS、SP、BP和標(biāo)志寄存器，那就應(yīng)該P(yáng)USH保存這些寄存器。 <o:p></o:p></SPAN></P>
2 A+ W u* ~& U<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 如果程序中改變了用于STD和CLD的方向標(biāo)志，你必須將其恢復(fù)到原來(lái)的值。<o:p></o:p></SPAN></P>" N. x. u+ r, ?
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: darkorange">六、轉(zhuǎn)跳</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>
0 o+ a* i: a, m3 K<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 可以在C里面使用goto調(diào)到__asm塊中的標(biāo)號(hào)處，也可以在__asm塊中轉(zhuǎn)跳到__asm塊里面和外面的標(biāo)號(hào)處。__asm塊內(nèi)的標(biāo)號(hào)是不區(qū)分大小寫(xiě)的(指令、指示符等也是不區(qū)分大小寫(xiě)的)。例: <o:p></o:p></SPAN></P>1 M7 T) \# ~! ?9 E- r
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">void</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> func() <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">goto</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> C_Dest; </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">/* 合法 */</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">goto</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> c_dest; </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">/* 錯(cuò)誤 */</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <o:p></o:p></SPAN></P>- _6 ?5 a6 W5 Q& L1 N$ |. |6 f
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">goto</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> A_Dest; </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">/* 合法 */</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">goto</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> a_dest; </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">/* 合法 */</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <o:p></o:p></SPAN></P>9 C) f1 y5 }6 D7 R7 d( R0 q; j/ G. D
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JMP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> C_Dest </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 合法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JMP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> c_dest </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; MSDN上說(shuō)合法，但是我在VS.NET中編譯，認(rèn)為這樣不合法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>' z0 z$ x, F1 }- i3 c6 q
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JMP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> A_Dest </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 合法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JMP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> a_dest </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 合法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>
+ J( l3 M/ W, _% f- U0 p<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> a_dest: ; </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 標(biāo)號(hào) <BR> } <o:p></o:p></SPAN></P>% H" N& U* \; @ P+ J7 l: T
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> C_Dest: </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">/* C的標(biāo)號(hào) */</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">return</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <BR> } <o:p></o:p></SPAN></P>
5 i" w9 j: `0 z6 x% c; \- \% ^<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> 不要使用函數(shù)名稱(chēng)當(dāng)作標(biāo)號(hào)，否則將使其跳到函數(shù)執(zhí)行而不是標(biāo)號(hào)處。如下所示: <o:p></o:p></SPAN></P>! n. Q2 ~, N3 L6 }1 f& \0 d& X! ^
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 錯(cuò)誤: 使用函數(shù)名作為標(biāo)號(hào) </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JNE</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> exit <BR> . <BR> . <BR> . <BR> exit: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 下面是更多的ASM代碼 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>
2 V+ c* k& O7 B8 e$ e _<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> 美元符號(hào)$用于指定當(dāng)前位置，如下所用，常用于條件跳轉(zhuǎn): <o:p></o:p></SPAN></P>
& n5 F+ M+ L1 k3 S h3 i% N* t<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JNE</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> $+5 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 下面這條指令的長(zhǎng)度是5個(gè)字節(jié) </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JMP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> farlabel <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">;$+5，跳到了這里 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> . <BR> . <BR> . <BR> farlabel: <o:p></o:p></SPAN></P>
+ z8 o. y1 ] R1 X4 R2 D<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: darkorange">七、調(diào)用函數(shù)</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>, r- {9 O! ^, t! G7 h% P
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 內(nèi)聯(lián)匯編調(diào)用C/C++函數(shù)必須自己清除堆棧，下面是一個(gè)調(diào)用C/C++函數(shù)例子: <o:p></o:p></SPAN></P>! [/ o, R) D4 t! H3 h8 k) t+ L
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: red">#include</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <stdio.h> <o:p></o:p></SPAN></P>
; Z6 ?0 a- g! o& r0 L! |<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">char</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> szformat[] = </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">"%s %s\n"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">char</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> szHello[] = </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">"Hello"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">char</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> szWorld[] = </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">" world"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">void</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> main() <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, OFFSET szWorld <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">PUSH</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, OFFSET szHello <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">PUSH</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, OFFSET szformat <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">PUSH</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">CALL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> printf <o:p></o:p></SPAN></P>
# ]: ~, [! c$ Z<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//內(nèi)聯(lián)匯編調(diào)用C函數(shù)必須自己清除堆棧 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//用不使用的EBX寄存器清除堆棧，或ADD ESP, 12 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">POP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">POP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">POP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> } <BR> } <o:p></o:p></SPAN></P>
% ?; d; y# }0 K9 J/ W<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 注意:函數(shù)參數(shù)是從右向左壓棧。 <o:p></o:p></SPAN></P>
. ~$ R1 l1 K T8 |8 k3 G<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 不能夠訪問(wèn)C++中的類(lèi)成員函數(shù)，但是可以訪問(wèn)extern "C"函數(shù)。 <o:p></o:p></SPAN></P>
/ ^' j* v/ s0 b<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 如果調(diào)用Windows API函數(shù)，則不需要自己清除堆棧，因?yàn)锳PI的返回指令是RET n，會(huì)自動(dòng)清除堆棧 <o:p></o:p></SPAN></P>* h' |$ s3 P/ {" z) G. b
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 比如下面的例子: <o:p></o:p></SPAN></P> M9 F5 y, k4 E% }9 B# r X& \# E
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: red">#include</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <windows.h> <o:p></o:p></SPAN></P>7 s: Z: i2 Z$ S
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">char</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> szAppName[] = </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">"API Test"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <o:p></o:p></SPAN></P>
# Y2 a1 X- u: C K1 ]) U4 ^0 d) @<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">void</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> main() <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">char</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> szHello[] = </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">"Hello, world!"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <o:p></o:p></SPAN></P>
1 M( V6 x0 _" Z<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">PUSH</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> MB_OK </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">OR</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> MB_ICONINformATION <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">PUSH</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> OFFSET szAppName </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 全局變量用OFFSET</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">LEA</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, szHello </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 局部變量用LEA</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">PUSH</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">PUSH</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 0 <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">CALL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> DWORD PTR [MessageBoxA] </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">; 注意這里，我費(fèi)了好大周折才發(fā)現(xiàn)不是CALL MessageBoxA</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> } <BR> } <o:p></o:p></SPAN></P>$ x. C, X) V4 h1 d$ |' ?
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 一般來(lái)說(shuō)，在Visual C++中使用內(nèi)聯(lián)匯編是為了提高速度，因此這些函數(shù)調(diào)用盡可能用C/C++寫(xiě)。<o:p></o:p></SPAN></P>
0 i5 N( ^1 h f<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: darkorange">八、一個(gè)例子</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>( H! O; c' `2 t- `$ L. L3 b: x
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> 下面的例子是在VS.NET(即VC7)中C語(yǔ)言寫(xiě)的。先建一個(gè)工程，將下列代碼放到工程中的.c文件中編譯，無(wú)需作特別的設(shè)置，即可編譯通過(guò)。<o:p></o:p></SPAN></P>. b7 u7 a& v4 ^; r0 |) b
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//預(yù)處理 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: red">#include</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <Windows.h> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>" F) z7 ^% }& \+ z, A& z* G2 z0 e
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//全局變量 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> HWND g_hWnd; <BR> HINSTANCE g_hInst; <o:p></o:p></SPAN></P>8 A! F) J1 X' g9 `3 Y$ o* s
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> TCHAR szTemp[1024]; <o:p></o:p></SPAN></P>; Y9 d; d8 K5 O \: z
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> TCHAR szAppName[] = </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">"CRC32 Sample"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>
1 y8 X7 Z+ `" }' V0 {/ E- y<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//函數(shù)聲明 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> DWORD GetCRC32(const BYTE *pbData, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> nSize); <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> iCmdShow); <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">LRESULT</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">CALLBACK</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam); <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>2 s- t% P7 G! _" B7 Y
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//主函數(shù) </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> iCmdShow) <BR> { <BR> MSG msg; <BR> WNDCLASSEX wndClassEx; <o:p></o:p></SPAN></P>. C( w8 d* H% x0 D, Z
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> g_hInst = hInstance; <o:p></o:p></SPAN></P>1 n; U. r2 J0 H- p7 u* B
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> wndClassEx.cbSize = </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">sizeof</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">(WNDCLASSEX); <BR> wndClassEx.style = CS_VREDRAW | CS_HREDRAW; <BR> wndClassEx.lpfnWndProc = (WNDPROC) WindowProc; <BR> wndClassEx.cbClsExtra = 0; <BR> wndClassEx.cbWndExtra = 0; <BR> wndClassEx.hInstance = g_hInst; <BR> wndClassEx.hIcon = LoadIcon(NULL, IDI_APPLICATION); <BR> wndClassEx.hCursor = LoadCursor(NULL, IDC_ARROW); <BR> wndClassEx.hbrBackground = (HBRUSH) (COLOR_WINDOW); <BR> wndClassEx.lpszMenuName = NULL; <BR> wndClassEx.lpszClassName = szAppName; <BR> wndClassEx.hIconSm = NULL; <o:p></o:p></SPAN></P>, S# \: J# U$ E% V0 J3 h% g1 O! c
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> RegisterClassEx(&wndClassEx); <o:p></o:p></SPAN></P>% ^. g" U' b4 J2 K' z
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> g_hWnd = CreateWindowEx(0, szAppName, szAppName, WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICK<I>FRame</I> | WS_MINIMIZEBOX, <BR> CW_USEDEFAULT, CW_USEDEFAULT, 300, 70, <BR> NULL, NULL, g_hInst, NULL); <o:p></o:p></SPAN></P>
; W5 r- R \! e" `+ u) |9 D2 w+ ^<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> ShowWindow(g_hWnd, iCmdShow); <BR> UpdateWindow(g_hWnd); <o:p></o:p></SPAN></P>
; Y; M% y( ?( Q5 r0 k4 d* r<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">while</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> (GetMessage(&msg, NULL, 0, 0)) <BR> { <BR> TranslateMessage(&msg); <BR> DispatchMessage(&msg); <BR> } <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">return</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> ((</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">) msg.wParam); <BR> } <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>
, E5 B1 C$ ^( S<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//主窗口回調(diào)函數(shù) </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">LRESULT</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">CALLBACK</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">switch</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> (uMsg) <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">case</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> WM_CREATE: <BR> CreateWindowEx(WS_EX_CLIENTEDGE, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">"EDIT"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL | ES_AUTOVSCROLL | ES_NOHIDESEL | WS_OVERLAPPED, <BR> 7, 12, 220, 22, <BR> hWnd, (HMENU)1000, g_hInst, NULL); <BR> CreateWindowEx(0, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">"BUTTON"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">"&OK"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | WS_OVERLAPPED | BS_FLAT, <BR> 244, 12, 40, 20, <BR> hWnd, (HMENU)IDOK, g_hInst, NULL); <o:p></o:p></SPAN></P>% _) `: `: \2 C4 |; ~/ p0 X* ?- V
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">break</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <o:p></o:p></SPAN></P>: \' @( ?: u# y9 j
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">case</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> WM_COMMAND: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">switch</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> (LOWORD(wParam)) <BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">case</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> IDOK: <BR> GetDlgItemText(g_hWnd, 1000, szTemp + 100, 800); <BR> wsprintf(szTemp, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: fuchsia">"當(dāng)前文本框內(nèi)的字符串的CRC32校驗(yàn)碼是: 0x%lX"</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, GetCRC32(szTemp + 100, (</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">)strlen(szTemp + 100))); <BR> MessageBox(g_hWnd, szTemp, szAppName, MB_OK|MB_ICONINformATION); <BR> } <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">break</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <o:p></o:p></SPAN></P>% {5 y0 W5 b$ ]
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">case</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> WM_DESTROY: <BR> PostQuitMessage(0); <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">break</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">; <o:p></o:p></SPAN></P>
" _: C( l( H. F+ c<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">default</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">return</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> (DefWindowProc(hWnd, uMsg, wParam, lParam)); <BR> } <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">return</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> (0); <BR> } <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P>
. t2 o0 s3 o7 P1 d: i5 v<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//////////////////////////////////////////////////////////////////////////////////////////////////// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//GetCRC32: 求字節(jié)流的CRC32校驗(yàn)碼 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//參數(shù): </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">// pbData: 指向字節(jié)流緩沖區(qū)首地址 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">// nSize: 字節(jié)流長(zhǎng)度 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//返回值: </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">// 字節(jié)流的CRC32校驗(yàn)碼 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//這里使用查表法求CRC32校驗(yàn)碼，這部分是參考老羅的文章《 矛與盾的較量（2）——CRC原理篇》該寫(xiě)的。 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//原文的具體內(nèi)容請(qǐng)參看: <A href="http://www.luocong.com/articles/show_article.asp?Article_ID=15" target=_blank>http://www.luocong.com/articles/show_article.asp?Article_ID=15</A> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//下面使用內(nèi)聯(lián)匯編求CRC32校驗(yàn)碼，充分使用了CPU中的寄存器，速度和方便性都是使用C/C++所不能比擬的 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">// </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> DWORD GetCRC32(const BYTE *pbData, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">int</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> nSize) <BR> { <BR> DWORD dwCRC32Table[256]; <o:p></o:p></SPAN></P>
) ?3 v1 X3 f4 Z4 C' Y<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//這片內(nèi)聯(lián)匯編是初始化CRC32表 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 256 <o:p></o:p></SPAN></P>/ ?1 ]. t7 U; @" D
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _NextTable: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">LEA</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, [</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">-1] <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">PUSH</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 8 <o:p></o:p></SPAN></P>2 a* K' G/ r1 V9 m; B% D2 n
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _NextBit: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">SHR</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 1 <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JNC</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _NotCarry <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">XOR</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 0xEDB88320 <BR> _NotCarry: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">DEC</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JNZ</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _NextBit <o:p></o:p></SPAN></P>) w& i6 U2 M' f1 p7 W' R5 n" l+ `3 }
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">POP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> [dwCRC32Table + </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">*4 - 4], </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">DEC</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JNZ</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _NextTable <BR> } <o:p></o:p></SPAN></P>
3 O. T, l" `5 U- J5 F<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">__asm</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">//下面是求CRC32校驗(yàn)碼 </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR> { <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, -1 <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, pbData <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">OR</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JZ</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _Done <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, nSize <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">OR</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">ECX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">JZ</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _Done <o:p></o:p></SPAN></P>
, [ j) k# M9 _/ S$ i# A" {( }<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _NextByte: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOV</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">DL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, [</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">] <o:p></o:p></SPAN></P>0 t& y9 L, B; W8 b8 M
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">XOR</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">DL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">AL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">MOVZX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EDX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">DL</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">SHR</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, 8 <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">XOR</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">, [dwCRC32Table + </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EDX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black">*4] <o:p></o:p></SPAN></P>" f, K5 X8 j6 _0 g5 b. d5 ^/ s
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">INC</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EBX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">LOOP</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> _NextByte <BR> _Done: <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: blue">NOT</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: olive">EAX</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"> <BR> } <BR> } <BR> </SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: green">////////////////////////////////////////////////////////////////////////////////////////////////////</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></P> v5 R! j" E4 G8 j/ m
<P style="WORD-BREAK: break-all; LINE-HEIGHT: 12pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><BR></SPAN></P> |
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發(fā)表于 2008-9-28 16:24:03
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