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,久久精品成人影院 http://www.shnenglu.com/aaxron/category/18044.html紼嬪簭,涓涓噸瑕佺殑璧風偣,鍚偣,鏃佹敮. zh-cn Fri, 01 Mar 2013 12:44:28 GMT Fri, 01 Mar 2013 12:44:28 GMT 60 C++鏁存暟銆佹誕鐐規暟銆佺粨鏋勪綋鐨勮繑鍥炲?/title> http://www.shnenglu.com/aaxron/archive/2013/03/01/198151.html澶╀笅 澶╀笅 Fri, 01 Mar 2013 02:16:00 GMT http://www.shnenglu.com/aaxron/archive/2013/03/01/198151.html http://www.shnenglu.com/aaxron/comments/198151.html http://www.shnenglu.com/aaxron/archive/2013/03/01/198151.html#Feedback 0 http://www.shnenglu.com/aaxron/comments/commentRss/198151.html http://www.shnenglu.com/aaxron/services/trackbacks/198151.html
#include " stdafx.h " struct person{ int age; int sex; char name[ 20 ]; }; struct person GetPerson( int age, int sex, char * name) { struct person p; p.age = age; p.sex = sex; strcpy(p.name,name); return p; } int main() { int m = 0x7ffff123 ; int n = 0x7ffff456 ; int k = 0x7fffffff ; // 姹囩紪鎸囦護:imul,mul long long x = ( long long )(m * n); // 榪斿洖鍊肩被鍨嬩負 int,鐒跺悗寮哄埗杞崲涓簂ong long,鏈鍚庤祴鍊肩粰x, long long y = ( long long )m * n; // 榪斿洖鍊肩被鍨嬩負 long long,鐒跺悗璧嬪肩粰y,娉ㄦ剰寮哄埗綾誨瀷杞崲鎷彿鐨勪綅緗? long long z = m * n; // 榪斿洖鍊肩被鍨嬩負 int,鐒跺悗璧嬪肩粰x. /* 姹囩紪鎸囦護: 004114BC mov eax,dword ptr [m] 004114BF imul eax,dword ptr [n] 004114C3 cdq //鏁版嵁鎵╁睍鎸囦護錛屽皢鍙屽瓧鏁版嵁鎵╁睍涓哄洓瀛楃被鍨?br /> //CDQ—Convert Double to Quad (386+)錛岃鎸囦護鎶奺dx鎵╁睍涓篹ax鐨勯珮浣嶏紝涔熷氨鏄鍙樹負64浣嶃?nbsp; 004114C4 mov dword ptr [z],eax 004114C7 mov dword ptr [ebp-4Ch],edx */ printf(" m = %d,n = %d \n " ,m,n); printf( " x = %lld\n " ,x); printf( " y = %lld\n " ,y); printf( " z = %lld\n " ,z); int m1 = 8 ; int n1 = 3 ; int k1 = m1 / n1; double k2 = m1 / n1; // 榪斿洖鍊肩被鍨嬩負 int,鐒跺悗璧嬪肩粰k2,姹囩紪鎸囦護:idiv /* 姹囩紪鎸囦護: 0041155E mov eax,dword ptr [m1] 00411561 cdq 00411562 idiv eax,dword ptr [n1] 00411565 mov dword ptr [ebp-1F4h],eax 0041156B fild dword ptr [ebp-1F4h] 00411571 fstp qword ptr [k2] fild鍜宖stp閮芥槸x87鎸囦護 fild嫻偣鍔犺澆鏁存暟 鐒跺悗杞崲涓洪暱鍙岀簿搴?nbsp; fild鏄皢鏁存暟杞寲涓洪暱鍙岀簿FP80鍘嬫爤錛堝帇鍒皊t0錛? fstp鏄皢寮規爤鎸囦護錛屽皢st0寮瑰嚭銆?br />*/ double k3 = ( double )(m1 / n1); // 榪斿洖鍊肩被鍨嬩負 int,鐒跺悗寮哄埗杞崲涓篸ouble,鏈鍚庤祴鍊肩粰k3,姹囩紪鎸囦護:idiv double k4 = ( double )m1 / n1; // 榪斿洖鍊肩被鍨嬩負double,鐒跺悗璧嬪肩粰k4,娉ㄦ剰寮哄埗綾誨瀷杞崲鎷彿鐨勪綅緗?姹囩紪鎸囦護:fidiv /* 姹囩紪鎸囦護: 00411590 fild dword ptr [m1] 00411593 fidiv dword ptr [n1] 00411596 fstp qword ptr [k4] */ printf(" k1=%d \r\n " ,k1); printf( " k2=%f \r\n " ,k2); printf( " k3=%f \r\n " ,k3); printf( " k4=%f \r\n " ,k4); char l1 = 127 ; char l2 = 122 ; int l3 = l1 * l2; /* 姹囩紪鎸囦護: 0041162E movsx eax,byte ptr [l1] 00411635 movsx ecx,byte ptr [l2] 0041163C imul eax,ecx 0041163F mov dword ptr [l3],eax */ char l4 = l1 * l2; /* 姹囩紪鎸囦護: 00411645 movsx eax,byte ptr [l1] 0041164C movsx ecx,byte ptr [l2] 00411653 imul eax,ecx 00411656 mov byte ptr [l4],al */ int l5 = l1 / l2; int l6 = double (l1) / l2; long double k5 = l1 * l2; /* 姹囩紪鎸囦護: 004116A6 movsx eax,byte ptr [l1] 004116AD movsx ecx,byte ptr [l2] 004116B4 imul eax,ecx 004116B7 mov dword ptr [ebp-1F4h],eax 004116BD fild dword ptr [ebp-1F4h] 004116C3 fstp qword ptr [k5] */ printf(" l3=%d \r\n " ,l3); printf( " l4=%d \r\n " ,l4); printf( " k4=%lf \r\n " ,k5); long long o1 = 0xff34567812345677 ; long long o2 = 0xab34567834125615 ; long long o3 = o1 * o2; // 婧㈠嚭 int age = 5 ; int sex = 1 ; char name[ 20 ] = " Aaron " ; struct person p1 = { 5 , 1 , " Aaron " }; struct person p2; struct person * pp1 = & p1; struct person * pp2 = & p2; p2 = p1; /* 姹囩紪鎸囦護: 00414348 mov ecx,7 0041434D lea esi,[ebp-188h] 00414353 lea edi,[ebp-1ACh] 00414359 rep movs dword ptr es:[edi],dword ptr [esi] //ecx 鏄鏁板櫒(counter)錛屾槸閲嶅(REP)鍓嶇紑鎸囦護鍜孡OOP鎸囦護鐨勫唴瀹氳鏁板櫒銆?br />鍥犱負sizeof(person) = 28,鎵浠ユ墠鏈塵ov ecx,7 */ struct person p3; p3 = GetPerson(age,sex,name); // 緇撹: /* 鏁存暟綾誨瀷: 灝忎簬絳変簬4瀛楄妭鐨勮繑鍥炲兼斁鍦╡ax涓? 8瀛楄妭鐨勮繑鍥炲兼斁鍦╡dx + eax涓?鍏朵腑edx涓洪珮浣?eax涓轟綆浣? 嫻偣鏁扮被鍨? 璁$畻鏄氳繃鍘嬫爤鐨勬柟寮?濡傛眹緙栨寚浠?fild 榪斿洖鏄氳繃鍑烘爤鐨勬柟寮?濡傛眹緙栨寚浠?fstp 緇撴瀯浣撶被鍨嬭祴鍊? 鏄氳繃鍐呭瓨鎷瘋礉鐨勬柟寮?濡傛眹緙栨寚浠?rep movs 灝嗘簮鍊肩殑鍦板潃鏀懼叆esi, 灝嗙洰鏍囧肩殑鍦板潃鏀懼叆edi, 00414393 lea esi,[ebp-2D8h] 00414399 lea edi,[ebp-1D0h] 0041439F rep movs dword ptr es:[edi],dword ptr [esi] 緇撴瀯浣撶被鍨?/font>榪斿洖鍊? 閫氳繃eax灝嗙粨鏋勪綋鐨?font color="#008000">鎸囬拡 榪斿洖*/ system(" pause " ); return 0 ; } // 111111111111111111111111111111 // 00000000000000000000000000000001 // // 111111111111111111001010111100 // 10000000101011010101110111000010 // 鍙栧弽鍔犱竴 1111111010100101010001000111110 // 11111001111111111111111111111110000011000 // 11111111111111111111110000011000 // 1111101000 // 11111010000000000000000000000000000000000 = 0 // 00000000000000000000000000000000 // // 1111111111111111111110000011000
]]>CPU鏃墮挓鍛ㄦ湡 http://www.shnenglu.com/aaxron/archive/2011/11/17/160316.html澶╀笅 澶╀笅 Thu, 17 Nov 2011 02:08:00 GMT http://www.shnenglu.com/aaxron/archive/2011/11/17/160316.html http://www.shnenglu.com/aaxron/comments/160316.html http://www.shnenglu.com/aaxron/archive/2011/11/17/160316.html#Feedback 0 http://www.shnenglu.com/aaxron/comments/commentRss/160316.html http://www.shnenglu.com/aaxron/services/trackbacks/160316.html 鍦ㄧ數瀛愭妧鏈腑錛岃剦鍐蹭俊鍙鋒槸涓涓寜涓瀹氱數鍘嬪箙搴︼紝涓瀹氭椂闂撮棿闅旇繛緇彂鍑虹殑鑴夊啿淇″彿銆傝剦鍐蹭俊鍙蜂箣闂寸殑鏃墮棿闂撮殧縐頒負鍛ㄦ湡錛涜屽皢鍦ㄥ崟浣嶆椂闂達紙濡?縐掞級鍐呮墍浜х敓鐨勮剦鍐蹭釜鏁扮О涓洪鐜囥傞鐜囨槸鎻忚堪鍛ㄦ湡鎬у驚鐜俊鍙鳳紙鍖呮嫭鑴夊啿淇″彿錛夊湪鍗曚綅鏃墮棿鍐呮墍鍑虹幇鐨勮剦鍐叉暟閲忓灝戠殑璁¢噺鍚嶇О錛涢鐜囩殑鏍囧噯璁¢噺鍗曚綅鏄疕z錛堣但錛夈傜數鑴戜腑鐨勭郴緇熸椂閽熷氨鏄竴涓吀鍨嬬殑棰戠巼鐩稿綋綺劇‘鍜岀ǔ瀹氱殑鑴夊啿淇″彿鍙戠敓鍣ㄣ傞鐜囧湪鏁板琛ㄨ揪寮忎腑鐢?#8220;f”琛ㄧず錛屽叾鐩稿簲鐨勫崟浣嶆湁錛欻z錛堣但錛夈乲Hz錛堝崈璧級銆丮Hz錛堝厗璧級銆丟Hz錛堝悏璧級銆傚叾涓?GHz=1000MHz錛?MHz=1000kHz錛?kHz=1000Hz銆傝綆楄剦鍐蹭俊鍙峰懆鏈熺殑鏃墮棿鍗曚綅鍙婄浉搴旂殑鎹㈢畻鍏崇郴鏄細s錛堢錛夈乵s錛堟縐掞級銆?#956;s錛堝井縐掞級銆乶s錛堢撼縐掞級錛屽叾涓細1s=1000ms錛? ms=1000μs錛?μs=1000ns銆?/div>
銆銆CPU鐨勪富棰戯紝鍗矯PU鍐呮牳宸ヤ綔鐨勬椂閽熼鐜囷紙CPU Clock Speed錛夈傞氬父鎵璇寸殑鏌愭煇CPU鏄灝戝厗璧殑錛岃岃繖涓灝戝厗璧氨鏄?#8220;CPU鐨勪富棰?#8221;銆傚緢澶氫漢璁や負CPU鐨勪富棰戝氨鏄叾榪愯閫熷害錛屽叾瀹炰笉鐒躲侰PU鐨勪富棰戣〃紺哄湪CPU鍐呮暟瀛楄剦鍐蹭俊鍙烽渿鑽$殑閫熷害錛屼笌CPU瀹為檯鐨勮繍綆楄兘鍔涘茍娌℃湁鐩存帴鍏崇郴銆備富棰戝拰瀹為檯鐨勮繍綆楅熷害瀛樺湪涓瀹氱殑鍏崇郴錛屼絾鐩墠榪樻病鏈変竴涓‘瀹氱殑鍏紡鑳藉瀹氶噺涓よ呯殑鏁板煎叧緋伙紝鍥犱負CPU鐨勮繍綆楅熷害榪樿鐪婥PU鐨勬祦姘寸嚎鐨勫悇鏂歸潰鐨勬ц兘鎸囨爣錛堢紦瀛樸佹寚浠ら泦錛孋PU鐨勪綅鏁扮瓑絳夛級銆傜敱浜庝富棰戝茍涓嶇洿鎺ヤ唬琛ㄨ繍綆楅熷害錛屾墍浠ュ湪涓瀹氭儏鍐典笅錛屽緢鍙兘浼氬嚭鐜頒富棰戣緝楂樼殑CPU瀹為檯榪愮畻閫熷害杈冧綆鐨勭幇璞°傛瘮濡侫MD鍏徃鐨凙thlonXP緋誨垪CPU澶у閮借兘宸茶緝浣庣殑涓婚錛岃揪鍒拌嫳鐗瑰皵鍏徃鐨凱entium 4緋誨垪CPU杈冮珮涓婚鐨凜PU鎬ц兘錛屾墍浠thlonXP緋誨垪CPU鎵嶄互PR鍊肩殑鏂瑰紡鏉ュ懡鍚嶃傚洜姝や富棰戜粎鏄疌PU鎬ц兘琛ㄧ幇鐨勪竴涓柟闈紝鑰屼笉浠h〃CPU鐨勬暣浣撴ц兘銆?/div>
銆銆CPU鐨勪富棰戜笉浠h〃CPU鐨勯熷害錛屼絾鎻愰珮涓婚瀵逛簬鎻愰珮CPU榪愮畻閫熷害鍗存槸鑷沖叧閲嶈鐨勩備婦涓緥瀛愭潵璇達紝鍋囪鏌愪釜CPU鍦ㄤ竴涓椂閽熷懆鏈熷唴鎵ц涓鏉¤繍綆楁寚浠わ紝閭d箞褰揅PU榪愯鍦?00MHz涓婚鏃訛紝灝嗘瘮瀹冭繍琛屽湪50MHz涓婚鏃墮熷害蹇竴鍊嶃傚洜涓?00MHz鐨勬椂閽熷懆鏈熸瘮50MHz鐨勬椂閽熷懆鏈熷崰鐢ㄦ椂闂村噺灝戜簡涓鍗婏紝涔熷氨鏄伐浣滃湪100MHz涓婚鐨凜PU鎵ц涓鏉¤繍綆楁寚浠ゆ墍闇鏃墮棿浠呬負10ns姣斿伐浣滃湪50MHz涓婚鏃剁殑20ns緙╃煭浜嗕竴鍗婏紝鑷劧榪愮畻閫熷害涔熷氨蹇簡涓鍊嶃傚彧涓嶈繃鐢佃剳鐨勬暣浣撹繍琛岄熷害涓嶄粎鍙栧喅浜嶤PU榪愮畻閫熷害錛岃繕涓庡叾瀹冨悇鍒嗙郴緇熺殑榪愯鎯呭喌鏈夊叧錛屽彧鏈夊湪鎻愰珮涓婚鐨勫悓鏃訛紝鍚勫垎緋葷粺榪愯閫熷害鍜屽悇鍒嗙郴緇熶箣闂寸殑鏁版嵁浼犺緭閫熷害閮借兘寰楀埌鎻愰珮鍚庯紝鐢佃剳鏁翠綋鐨勮繍琛岄熷害鎵嶈兘鐪熸寰楀埌鎻愰珮銆?/div>
銆銆鎻愰珮CPU宸ヤ綔涓婚涓昏鍙楀埌鐢熶駭宸ヨ壓鐨勯檺鍒躲傜敱浜嶤PU鏄湪鍗婂浣撶鐗囦笂鍒墮犵殑錛屽湪紜呯墖涓婄殑鍏冧歡涔嬮棿闇瑕佸綰胯繘琛岃仈鎺ワ紝鐢變簬鍦ㄩ珮棰戠姸鎬佷笅瑕佹眰瀵肩嚎瓚婄粏瓚婄煭瓚婂ソ錛岃繖鏍鋒墠鑳藉噺灝忓綰垮垎甯冪數瀹圭瓑鏉傛暎騫叉壈浠ヤ繚璇丆PU榪愮畻姝g‘銆傚洜姝ゅ埗閫犲伐鑹虹殑闄愬埗錛屾槸CPU涓婚鍙戝睍鐨勬渶澶ч殰紕嶄箣涓銆?/div>
銆銆
銆銆涓漢鐞嗚В鐨勬槸:
銆銆涓涓井鎸囦護鍛ㄦ湡閫氬父璁捐鎴愪竴涓狢PU鏃墮挓鍛?鑰屼竴鏉℃寚浠ら氬父闇瑕佸嚑鏉″井鎸囦護,涔熷氨鏄竴鏉℃寚浠ゅ崰澶氬皯涓瓧鑺傚氨闇瑕佸灝戜釜鏃墮挓鍛ㄦ湡.
銆銆
銆銆鍙傝?
銆銆http://blog.csdn.net/mydo/article/details/1776304
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鍘熺爜銆佸弽鐮併佽ˉ鐮?澶嶄範 http://www.shnenglu.com/aaxron/archive/2011/11/14/160102.html澶╀笅 澶╀笅 Mon, 14 Nov 2011 09:57:00 GMT http://www.shnenglu.com/aaxron/archive/2011/11/14/160102.html http://www.shnenglu.com/aaxron/comments/160102.html http://www.shnenglu.com/aaxron/archive/2011/11/14/160102.html#Feedback 0 http://www.shnenglu.com/aaxron/comments/commentRss/160102.html http://www.shnenglu.com/aaxron/services/trackbacks/160102.html 鍘熺爜銆佸弽鐮併佽ˉ鐮?br />璁$畻鏈洪氬父鐢ㄨˉ鐮佽〃紺烘暣鏁?/p>
鍏紡:璐熸暟(x) (x)鍘熺爜+(x)琛ョ爜=0,榪涗綅涓㈠純.
涓轟簡綆鍗曡搗瑙侊紝鎴戜滑鐢?涓瓧鑺傛潵琛ㄧず涓涓暣鏁般?/p>
鍘熺爜 灝嗘渶楂樹綅浣滀負絎﹀彿浣嶏紙浠?浠h〃姝o紝1浠h〃璐燂級錛屽叾浣欏悇浣嶄唬琛ㄦ暟鍊兼湰韜殑緇濆鍊鹼紙浠ヤ簩榪涘埗琛ㄧず錛夈?br /> +7鐨勫師鐮佷負錛?00000111 -7鐨勫師鐮佷負錛?10000111 闂錛?br /> +0鐨勫師鐮佷負錛?0000000 -0鐨勫師鐮佷負錛?10000000 鍙嶇爜錛?br />涓涓暟濡傛灉涓烘錛屽垯瀹冪殑鍙嶇爜涓庡師鐮佺浉鍚岋紱涓涓暟濡傛灉涓鴻礋錛屽垯絎﹀彿浣嶄負1錛屽叾浣欏悇浣嶆槸瀵瑰師鐮佸彇鍙嶃?br /> +7鐨勫弽鐮佷負錛?0000111 -7鐨勫弽鐮佷負錛?11111000 闂錛?br /> +0鐨勫弽鐮佷負錛?0000000 -0鐨勫弽鐮佷負錛?1111111 琛ョ爜錛?br />涓涓暟濡傛灉涓烘錛屽垯瀹冪殑鍘熺爜銆佸弽鐮併佽ˉ鐮佺浉鍚岋紱 涓涓暟濡傛灉涓鴻礋錛屽垯絎﹀彿浣嶄負1錛屽叾浣欏悇浣嶆槸瀵瑰師鐮佸彇鍙嶏紝鐒跺悗鏁翠釜鏁板姞1銆?/p>
+7鐨勮ˉ鐮佷負錛?0000111 -7鐨勮ˉ鐮佷負錛? 絎竴姝ワ細鐢?7鍘熺爜寰楀埌-7鐨勫弽鐮?寰楀埌11111000錛岀浜屾,鍙嶇爜+1=11111001
鍗寵礋鏁拌ˉ鐮佸叕寮? 琛ョ爜=鍙嶇爜+1
闂錛?鐨勮ˉ鐮佽〃紺猴細 +0鐨勮ˉ鐮侊細 00000000
-0鐨勮ˉ鐮侊細 絎竴姝ワ細寰楀埌-0(10000000)鐨勫弽鐮?11111111 絎簩姝ワ細鍙嶇爜(11111111)+1 = 1 00000000 絎笁姝ワ細榪涗綅1琚涪寮?br /> 瀵逛簬鏈夋ā榪愮畻鏉ヨ錛屽噺涓涓暟絳変簬鍔犱笂璇ユ暟瀵規ā鐨勮ˉ鏁般傝ˉ鐮佸氨鏄寜琛ユ暟姒傚康瀵規暟鎹繘琛岀紪鐮佺殑銆傝綆楁満寮曞叆琛ョ爜鍚庯紝鍑忔硶鍙漿鎹負鍔犳硶錛屾柟渚胯繍綆?br />
]]> Windows鍐呮牳椹卞姩寮鍙戝叆闂ㄥ涔犺祫鏂?/title> http://www.shnenglu.com/aaxron/archive/2011/11/07/159726.html澶╀笅 澶╀笅 Mon, 07 Nov 2011 01:20:00 GMT http://www.shnenglu.com/aaxron/archive/2011/11/07/159726.html http://www.shnenglu.com/aaxron/comments/159726.html http://www.shnenglu.com/aaxron/archive/2011/11/07/159726.html#Feedback 0 http://www.shnenglu.com/aaxron/comments/commentRss/159726.html http://www.shnenglu.com/aaxron/services/trackbacks/159726.html Windows鍐呮牳椹卞姩寮鍙戝叆闂ㄥ涔犺祫鏂?/h2>澹版槑錛氭湰鏂囨墍鎻忚堪鐨勬墍鏈夎祫鏂欏拰婧愮爜鍧囨悳闆嗚嚜浜掕仈緗戯紝鐗堟潈褰掑師濮嬩綔鑰呮墍鏈夛紝鎵浠ュ湪寮曠敤璧勬枡鏃舵垜灝介噺娉ㄦ槑鍘熷浣滆呭拰鍑哄錛涙湰鏂囨墍鎼滈泦璧勬枡涔熶粎渚涘悓瀛︿滑瀛︿範涔嬬敤錛岀敱浜庣敤浣滃叾浠栫敤閫斿紩璧風殑璐d換綰犵悍錛屾湰浜轟笉璐熶換浣曡矗浠匯傦紙鏈祫鏂欑敱浠g爜鐤瓙 鏁寸悊錛?/p>
涓銆佷功綾嶆帹鑽?/strong>
銆奧indows椹卞姩寮鍙戞妧鏈瑙c嬩綔鑰咃細寮犲竼銆佸彶褰╂垚錛涘嚭鐗堢ぞ錛氱數瀛愬伐涓氬嚭鐗堢ぞ 銆婂ぉ涔﹀璇伙細浠庢眹緙栬璦鍒癢indows鍐呮牳緙栫▼銆嬩綔鑰咃細璋枃銆侀偟鍧氱錛涘嚭鐗堢ぞ錛氱數瀛愬伐涓氬嚭鐗堢ぞ 銆婂瘨姹熺嫭閽擄細Windows鍐呮牳瀹夊叏緙栫▼銆嬩綔鑰咃細璋枃銆佹潹娼囥侀偟鍧氱錛涘嚭鐗堢ぞ錛氱數瀛愬伐涓氬嚭鐗堢ぞ 鍏朵粬椹卞姩寮鍙戠浉鍏充功綾?/li> 浜屻佹簮鐮佸涔?/strong>
銆奧indows椹卞姩寮鍙戞妧鏈瑙c嬫簮鐮佷笅杞斤細http://dl.dbank.com/c0rmlpwkfi 銆婂瘨姹熺嫭閽擄細Windows鍐呮牳瀹夊叏緙栫▼銆嬫簮鐮佷笅杞斤細http://dl.dbank.com/c0t5kawz2e DDK 2600 椹卞姩渚嬪瓙婧愮爜涓嬭澆錛歨ttp://dl.dbank.com/c0oktzwfsf WDK 7600 椹卞姩渚嬪瓙婧愮爜涓嬭澆錛歨ttp://dl.dbank.com/c0hj1khp8c 涓夈佸涔犵綉绔?/strong>
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]]> 姹囩紪瀛︿範絎旇1 http://www.shnenglu.com/aaxron/archive/2011/11/04/159626.html澶╀笅 澶╀笅 Fri, 04 Nov 2011 08:34:00 GMT http://www.shnenglu.com/aaxron/archive/2011/11/04/159626.html http://www.shnenglu.com/aaxron/comments/159626.html http://www.shnenglu.com/aaxron/archive/2011/11/04/159626.html#Feedback 0 http://www.shnenglu.com/aaxron/comments/commentRss/159626.html http://www.shnenglu.com/aaxron/services/trackbacks/159626.html 鏍?br />榪愯鏃舵爤鏄敱CPU鐩存帴綆$悊鐨勫唴瀛樻暟緇?瀹冧嬌鐢ㄤ袱涓瘎瀛樺櫒:SS鍜孍SP (Extended stack pointer)銆?br />鍦ㄤ繚鎶ゆā寮忎笅錛孲S瀵勫瓨鍣ㄥ瓨鏀劇殑鏄閫夋嫨鍣紝鐢ㄦ埛妯″紡紼嬪簭涓嶅簲瀵瑰叾榪涜淇敼銆?br />ESP瀵勫瓨鍣ㄥ瓨鏀劇殑鏄寚鍚戝爢鏍堝唴鐗瑰畾浣嶇疆鐨勪竴涓?2浣嶅亸縐誨箋傚畠鎸囧悜鏈鍚庡帇鍏?鎴栨坊鍔?鍒板爢鏍堜笂鐨勬暟鎹? 鎴戜滑寰堝皯闇瑕佺洿鎺ユ搷綰礒SP鐨勫鹼紝鐩稿弽錛孍SP瀵勫瓨鍣ㄧ殑鍊奸氬父鏄敱CALL錛孯ET錛孭USH鍜孭OP絳夋寚浠ら棿鎺ヤ慨鏀圭殑銆?br /> 鍘嬫爤鎿嶄綔 32浣嶇殑鍘嬫爤鎿嶄綔(PUSH)鎿嶄綔灝嗕嬌ESP鐨勫煎噺4,騫跺皢鍊兼嫹璐濆埌鍫嗘爤鎸囬拡鎵鎸囧悜鐨勪綅緗? 鍑烘爤鎿嶄綔 32浣嶇殑鍑烘爤(POP)鎿嶄綔浠庡爢鏍堥《绔Щ璧頒竴涓?騫跺皢鍊肩疆浜庡瘎瀛樺櫒鎴栧彉閲忎腑,鍦ㄥ間粠鏍堥《寮瑰嚭涔嬪悗,ESP鐨勫煎姞4. PROC浼寚浠?br />瀹氫箟瀛愯繃紼嬬殑浼寚浠?浠ET璇彞緇撴潫鐨勫懡鍚嶈鍙ュ潡. proc_name PROC param1:DWORD, ;鍙傛暟1 param2:PTR BYTE, ;鍙傛暟2 param3:PTR WORD ;鍙傛暟3 LOCAL localvar1:BYTE ;灞閮ㄥ彉閲? LOCAL localvar2:WORD ;灞閮ㄥ彉閲? ; . RET ; .. RET ;( return from procedure)浠ュ己鍒禖PU榪斿洖鍒拌繃紼嬭璋冪敤鐨勫湴鏂?br />proc_name ENDP CALL鎸囦護 CALL鎸囦護灝嗚繑鍥炲湴鍧(閫氬父鏄疌ALL鎸囦護鐨勪笅涓鏉℃寚浠?CALL鎸囦護鐨勬満鍣ㄧ爜闇瑕?瀛楄妭)鍘嬪叆鍫嗘爤騫跺皢琚皟鐢ㄨ繃紼嬬殑鍦板潃鎷瘋礉鍒版寚浠ゆ寚閽堝瘎瀛樺櫒EIP涓?褰撹繃紼嬭繑鍥炴椂,RET鎸囦護浠庡爢鏍堜腑寮瑰嚭鍦板潃騫墮佸埌鎸囦護鎸囬拡瀵勫瓨鍣ㄤ腑(ESP鎵鎸囧悜鍫嗘爤鍊艱寮瑰嚭騫墮佸埌EIP). CPU鎬繪槸鎵ц鎸囦護鎸囬拡瀵勫瓨鍣‥IP鎵鎸囧悜鐨勫唴瀛樺湴鍧澶勭殑鎸囦護. RET鎸囦護 鍦?2浣嶄繚鎶ゆā寮忎笅 CPU鎵цRET鎸囦護鏃訛紝鐩稿綋浜庤繘琛岋細 pop EIP CPU鎵цRET N鎸囦護鏃?榪欓噷N鏄竴涓嚜鐒舵暟,鐩稿綋浜庤繘琛岋細 pop EIP add ebp,N 灞閮ㄦ爣鍙峰拰鍏ㄥ眬鏍囧彿 灞閮ㄦ爣鍙?浠ュ崟涓啋鍙風粨灝?鍦ㄨ繃紼嬩腑浣跨敤. 鍏ㄥ眬鏍囧彿(浠ヤ袱涓啋鍙風粨灝?鍦ㄥ叏灞浣跨敤. LOCAL 浼寚浠?br />LOCAL浼寚浠ゅ湪榪囩▼涓0鏄庝竴涓垨澶氫釜灞閮ㄥ彉閲?br />LOCAL 鍙橀噺鍚?綾誨瀷 濡? MySub PROC LOCAL var1:BYTE LOCAL var2:WORD ; . RET MySub ENDP ]]>
WinDBG鐨勪吉瀵勫瓨鍣?/title> http://www.shnenglu.com/aaxron/archive/2011/11/03/159548.html澶╀笅 澶╀笅 Thu, 03 Nov 2011 03:11:00 GMT http://www.shnenglu.com/aaxron/archive/2011/11/03/159548.html http://www.shnenglu.com/aaxron/comments/159548.html http://www.shnenglu.com/aaxron/archive/2011/11/03/159548.html#Feedback 0 http://www.shnenglu.com/aaxron/comments/commentRss/159548.html http://www.shnenglu.com/aaxron/services/trackbacks/159548.html WinDBG鐨勪吉瀵勫瓨鍣?br /> $ea 涓婁竴鏉℃寚浠や腑鐨勬湁鏁堝湴鍧錛坋ffective address錛?br /> $ea2 涓婁竴鏉℃寚浠や腑鐨勭浜屼釜鏈夋晥鍦板潃 $exp 琛ㄨ揪寮忚瘎浼板櫒鎵璇勪及鐨勪笂涓鏉¤〃杈懼紡 $ra 褰撳墠鍑芥暟鐨勮繑鍥炲湴鍧錛坮etrun address錛夈?br />渚嬪錛屽彲浠ヤ嬌鐢╣ @$ra榪斿洖鍒頒笂涓綰у嚱鏁幫紝涓巊u錛坓o up錛夊叿鏈夊悓鏍風殑鏁堟灉 $ip 鎸囦護鎸囬拡瀵勫瓨鍣ㄣ倄86涓嵆EIP錛寈64鍗砮ip $eventip 褰撳墠璋冭瘯浜嬩歡鍙戠敓鏃剁殑鎸囦護鎸囬拡 $previp 涓婁竴浜嬩歡鐨勬寚浠ゆ寚閽?br /> $relip 涓庡綋鍓嶄簨浠跺叧鑱旂殑鎸囦護鎸囬拡錛屼緥濡傛寜鍒嗘敮璺熻釜鏃剁殑鍒嗘敮婧愬湴鍧 $scopeip 褰撳墠涓婁笅鏂囷紙scope錛夌殑鎸囦護鎸囬拡 $exentry 褰撳墠榪涚▼鐨勫叆鍙e湴鍧 $retreg 棣栬鐨勫嚱鏁拌繑鍥炲煎瘎瀛樺櫒銆倄86鏋舵瀯浣跨敤鐨勬槸EAX錛寈64鏄疪AX錛屽畨鑵炬槸ret0 $retreg64 64浣嶆牸寮忕殑棣栬鍑芥暟榪斿洖鍊煎瘎瀛樺櫒錛寈86涓槸edx:eax瀵勫瓨鍣ㄥ $csp 甯ф寚閽堬紝x86涓嵆ESP瀵勫瓨鍣紝x64鏄疪SP錛屽畨鑵句負BSP $p 涓婁竴涓唴瀛樻樉紺哄懡浠わ紙d * 錛夋墍鎵撳嵃鐨勭涓涓?br /> $proc 褰撳墠榪涚▼鐨凟PROCESS緇撴瀯鐨勫湴鍧 $thread 褰撳墠綰跨▼鐨凟THREAD緇撴瀯鐨勫湴鍧 $peb 褰撳墠榪涚▼鐨勮繘紼嬬幆澧冨潡錛圥EB錛夌殑鍦板潃 $teb 褰撳墠綰跨▼鐨勭嚎紼嬬幆澧冨潡錛圱EB錛夌殑鍦板潃 $tpid 鎷ユ湁褰撳墠綰跨▼鐨勮繘紼嬬殑榪涚▼ID錛圥ID錛?br /> $tid 褰撳墠綰跨▼鐨勭嚎紼婭D $bpx x鍙鋒柇鐐圭殑鍦板潃 $frame 褰撳墠鏍堝撫鐨勫簭鍙?br /> $dbgtime 褰撳墠鏃墮棿錛屼嬌鐢?formats鍛戒護鍙互灝嗗叾鏄劇ず涓哄瓧絎︿覆鍊?br /> $callret 浣跨敤.call鍛戒護璋冪敤鐨勪笂涓涓嚱鏁扮殑榪斿洖鍊鹼紝鎴栬呬嬌鐢?fnret鍛戒護璁劇疆鐨勮繑鍥炲?br /> $ptrsize 璋冭瘯鐩爣鎵鍦ㄧ郴緇熺殑鎸囬拡綾誨瀷瀹藉害 $pagesize 璋冭瘯鐩爣鎵鍦ㄧ郴緇熺殑鍐呭瓨欏靛瓧鑺傛暟 鍙互鐩存帴鐢ㄤ笂琛ㄤ腑鐨勫悕縐版潵浣跨敤浼瘎瀛樺櫒錛屼絾鏄洿蹇熺殑鏂規硶鏄湪$鍓嶅姞涓婁竴涓狜絎﹀彿銆傝繖鏍鳳紝WinDBG灝辯煡閬揁鍚庨潰鏄竴涓吉瀵勫瓨鍣紝涓嶉渶瑕佹悳绱㈠叾浠栫鍙楓?br /> 浣跨敤windbg鍦ㄧ▼搴忕殑鍏ュ彛鐐逛笅鏂偣 1 銆乥p @$exentry 浣跨敤浼瘎瀛樺櫒鐨勬柟娉曪紝涔熸槸鏈甯哥敤鐨勬柟娉?br /> 2 銆乥p poi(@$peb + 8 ) + poi(poi(@$peb + 8 ) + poi(poi(@$peb + 8 ) + 3c) + 28 ) 3 銆乥p $iment(poi(@$peb + 8 )) ]]>
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