{"id":132,"date":"2015-07-01T17:30:35","date_gmt":"2015-07-01T17:30:35","guid":{"rendered":""},"modified":"2015-07-01T17:30:35","modified_gmt":"2015-07-01T17:30:35","slug":"","status":"publish","type":"post","link":"http:\/\/weizn.net\/?p=132","title":{"rendered":"[\u8f6c]extern “C” _declspec(dllexport)\u6d45\u6790"},"content":{"rendered":"

extern “C”\u4f7f\u5f97\u5728C++\u4e2d\u4f7f\u7528C\u7f16\u8bd1\u65b9\u5f0f\u6210\u4e3a\u53ef\u80fd\u3002\u5728\u201cC++\u201d\u4e0b\u5b9a\u4e49\u201cC\u201d\u51fd\u6570\uff0c\u9700\u8981\u52a0extern \u201cC\u201d\u5173\u952e\u8bcd\u3002\u7528extern “C”\u6765\u6307\u660e\u8be5\u51fd\u6570\u4f7f\u7528C\u7f16\u8bd1\u65b9\u5f0f\u3002\u8f93\u51fa\u7684\u201cC\u201d\u51fd\u6570\u53ef\u4ee5\u4ece\u201cC\u201d\u4ee3\u7801\u91cc\u8c03\u7528<\/span><\/p>\n

\n \u4f7f\u7528\u5fae\u8f6f\u4e13\u7528\u7684_declspec (dllexport)  <\/span>
\n cpp\u6587\u4ef6\u5728\u7f16\u8bd1\u4e3aOBJ\u6587\u4ef6\u65f6\u8981\u5bf9\u51fd\u6570\u8fdb\u884c\u91cd\u65b0\u547d\u540d\uff0cC\u8bed\u8a00\u4f1a\u628a\u51fd\u6570name\u91cd\u65b0\u547d\u540d\u4e3a_name,\u800cC++\u4f1a\u91cd\u65b0\u547d\u540d\u4e3a_name@@decoration\uff0c<\/span>
\n extern “C”\u8868\u793a\u7528C\u8bed\u8a00\u7684\u683c\u5f0f\u5c06\u51fd\u6570\u91cd\u547d\u540d<\/span>
\n \u8981\u8f93\u51fa\u6574\u4e2a\u7684\u7c7b\uff0c\u5bf9\u7c7b\u4f7f\u7528_declspec(_dllexpot)\uff1b\u8981\u8f93\u51fa\u7c7b\u7684\u6210\u5458\u51fd\u6570\uff0c\u5219\u5bf9\u8be5\u51fd\u6570\u4f7f\u7528_declspec(_dllexport)<\/span><\/p>\n

\n \u50cf\u5982\u4e0b\u4ee3\u7801<\/span>
\n int main()<\/span>
\n {<\/span>
\n    func()<\/span>
\n    return 0;<\/span>
\n }<\/span>
\n \u7f16\u8bd1\u5668\u751f\u6210\u50cf\u4e0b\u9762\u7684\u4ee3\u7801<\/span>
\n call func1<\/span>
\n \u8fde\u63a5\u5668\u4f20\u5165\u50cf\u4e0b\u9762\u7684\u4ee3\u7801<\/span>
\n call 0x4000000         ; \u51fd\u6570func\u7684\u5730\u5740<\/span>
\n \u5982\u679cfunc\u5728DLL\u4e2d\uff0c\u8fde\u63a5\u5668\u5c31\u65e0\u6cd5\u5f97\u5230func\u7684\u76f4\u63a5\u5730\u5740\uff1b\u572832\u4f4d\u7cfb\u7edf\u4e0b\uff0c\u8fde\u63a5\u5668\u5c06\u751f\u6210\u4e00\u4e2athunk\u5305\u542bfunc\u7684\u8c03\u7528\u5730\u5740<\/span>
\n 0x40000000:    jmp DWORD PTR __imp_func<\/span>
\n __imp_func\u4e8bfunc\u5728.exe\u5bfc\u5165\u51fd\u6570\u8868\u4e2d\u7684\u5730\u5740,\u8fd9\u4e2a\u5730\u5740\u4f20\u5165\u8fde\u63a5\u5668\u8fdb\u884c\u8fde\u63a5<\/span>
\n \u8fd9\u6837\u751f\u6210\u7684\u4ee3\u7801\u6bd4\u8f83\u5927\u800c\u4e14\u901f\u5ea6\u6162\uff1b<\/span>
\n \u800c\u4f7f\u7528__declspec(dllimport) \u5219\u76f4\u63a5\u544a\u8bc9\u8fde\u63a5\u5668\u76f4\u63a5\u8c03\u7528DLL\u4e2dfunc\u7684\u5730\u5740\uff0c\u4e0d\u8981\u4f7f\u7528thunk<\/span>
\n   __declspec(dllimport) void func(void);<\/span>
\n void main(void) <\/span>
\n {<\/span>
\n     func1();<\/span>
\n }<\/span>
\n \u751f\u6210\u5982\u4e0b\u4ee3\u7801<\/span>
\ncall DWORD PTR __imp_fu<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

extern “C”     extern “C”\u4f7f\u5f97\u5728C++\u4e2d\u4f7f\u7528C\u7f16\u8bd1\u65b9\u5f0f\u6210\u4e3a\u53ef\u80fd\u3002\u5728\u201cC++\u201d\u4e0b\u5b9a\u4e49\u201cC\u201d\u51fd\u6570\uff0c\u9700\u8981\u52a0extern \u201cC\u201d\u5173\u952e\u8bcd\u3002\u7528extern “C”\u6765\u6307\u660e\u8be5\u51fd\u6570\u4f7f\u7528C\u7f16\u8bd1\u65b9\u5f0f\u3002\u8f93\u51fa\u7684\u201cC\u201d\u51fd\u6570\u53ef\u4ee5\u4ece\u201cC\u201d\u4ee3\u7801\u91cc\u8c03\u7528<\/p>\n

\n\u4f7f\u7528\u5fae\u8f6f\u4e13\u7528\u7684_declspec (dllexport)  
\ncpp\u6587\u4ef6\u5728\u7f16\u8bd1\u4e3aOBJ\u6587\u4ef6\u65f6…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[324],"tags":[],"class_list":["post-132","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"\n[\u8f6c]extern "C" _declspec(dllexport)\u6d45\u6790 - Wayne's Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/weizn.net\/?p=132\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[\u8f6c]extern "C" _declspec(dllexport)\u6d45\u6790 - Wayne's Blog\" \/>\n<meta property=\"og:description\" content=\"extern "C"     extern "C"\u4f7f\u5f97\u5728C++\u4e2d\u4f7f\u7528C\u7f16\u8bd1\u65b9\u5f0f\u6210\u4e3a\u53ef\u80fd\u3002\u5728\u201cC++\u201d\u4e0b\u5b9a\u4e49\u201cC\u201d\u51fd\u6570\uff0c\u9700\u8981\u52a0extern \u201cC\u201d\u5173\u952e\u8bcd\u3002\u7528extern "C"\u6765\u6307\u660e\u8be5\u51fd\u6570\u4f7f\u7528C\u7f16\u8bd1\u65b9\u5f0f\u3002\u8f93\u51fa\u7684\u201cC\u201d\u51fd\u6570\u53ef\u4ee5\u4ece\u201cC\u201d\u4ee3\u7801\u91cc\u8c03\u7528 \u4f7f\u7528\u5fae\u8f6f\u4e13\u7528\u7684_declspec (dllexport)   cpp\u6587\u4ef6\u5728\u7f16\u8bd1\u4e3aOBJ\u6587\u4ef6\u65f6...\" \/>\n<meta property=\"og:url\" content=\"http:\/\/weizn.net\/?p=132\" \/>\n<meta property=\"og:site_name\" content=\"Wayne's Blog\" \/>\n<meta property=\"article:published_time\" content=\"2015-07-01T17:30:35+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"zinan\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"http:\/\/weizn.net\/#website\",\"url\":\"http:\/\/weizn.net\/\",\"name\":\"Wayne's Blog\",\"description\":\"\",\"publisher\":{\"@id\":\"http:\/\/weizn.net\/#\/schema\/person\/e88bc12c590502d8b6249326f960b264\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"http:\/\/weizn.net\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"WebPage\",\"@id\":\"http:\/\/weizn.net\/?p=132#webpage\",\"url\":\"http:\/\/weizn.net\/?p=132\",\"name\":\"[\\u8f6c]extern \\\"C\\\" _declspec(dllexport)\\u6d45\\u6790 - 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