{"id":498,"date":"2011-01-18T12:21:05","date_gmt":"2011-01-18T04:21:05","guid":{"rendered":"http:\/\/kaoru.tech\/?p=498"},"modified":"2011-01-21T15:56:03","modified_gmt":"2011-01-21T07:56:03","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8g%e9%93%be%e6%8e%a5c%e5%ba%93","status":"publish","type":"post","link":"http:\/\/kaoru.tech:7000\/wordpress\/?p=498","title":{"rendered":"\u5982\u4f55\u4f7f\u7528g++\u94fe\u63a5C\u5e93"},"content":{"rendered":"

\u901a\u5e38\u6211\u4eec\u4f1a\u7528gcc\u7f16\u8bd1\u52a8\u6001\u94fe\u63a5\u5e93\u7ed9\u7528\u6237\u4f7f\u7528\uff0c\u800c\u7528\u6237\u5219\u53ef\u80fd\u4f7f\u7528g++\u3002\u8fd9\u6837\u5c31\u4f1a\u6709\u4e00\u4e2a\u95ee\u9898\uff0c\u94fe\u63a5\u7684\u65f6\u5019\u7ecf\u5e38\u627e\u4e0d\u5230\u51fd\u6570\u3002\u5982\u4f55\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5462\uff0c\u6211\u4eec\u5148\u770b\u4ee5\u4e0b\u4e3a\u4ec0\u4e48\u627e\u4e0d\u5230\u3002<\/p>\n

\u5927\u5bb6\u77e5\u9053\uff0cc++\u662f\u652f\u6301\u51fd\u6570\u91cd\u8f7d\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u76f8\u540c\u540d\u5b57\u7684\u51fd\u6570\u53ef\u4ee5\u5728c++\u4e2d\u5b9a\u4e49\u591a\u6b21\uff0c\u53ea\u9700\u8981\u8fd4\u56de\u503c\u6216\u8005\u51fd\u6570\u53c2\u6570\u4e0d\u540c\u5373\u53ef\u3002<\/p>\n

\u6211\u4eec\u5206\u522b\u7528g++\u548cgcc\u7f16\u8bd1\u540c\u4e00\u4e2a\u6587\u4ef6\u770b\u770b\u5176\u751f\u6210\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u3002<\/p>\n

void *SCardOpen(void)\r\n{\r\n}<\/pre>\n
\u4f7f\u7528gcc\u7f16\u8bd1\u540e<\/p>\n
kaoru@dev:\/data\/libscard.git$ arm-linux-objdump -D scard_open.o \r\n\r\nscard_open.o:     file format elf32-littlearm\r\n\r\nDisassembly of section .text:\r\n\r\n00000000 :\r\n   0:   e1a0c00d        mov     ip, sp\r\n   4:   e92dd800        stmdb   sp!, {fp, ip, lr, pc}\r\n   8:   e24cb004        sub     fp, ip, #4      ; 0x4\r\n   c:   e24dd00c        sub     sp, sp, #12     ; 0xc\r\n  10:   e3a00010        mov     r0, #16 ; 0x10<\/pre>\n
\u4f7f\u7528g++\u7f16\u8bd1\u540e<\/p>\n
kaoru@dev:\/data\/libscard.git$ arm-linux-objdump -D scard_open.o \r\n\r\nscard_open.o:     file format elf32-littlearm\r\n\r\nDisassembly of section .text:\r\n\r\n00000000 <_Z9SCardOpenv>:\r\n   0:   e1a0c00d        mov     ip, sp\r\n   4:   e92dd800        stmdb   sp!, {fp, ip, lr, pc}\r\n   8:   e24cb004        sub     fp, ip, #4      ; 0x4\r\n   c:   e24dd00c        sub     sp, sp, #12     ; 0xc\r\n  10:   e3a00010        mov     r0, #16 ; 0x10\r\n\r\n<\/pre>\n
\u5f88\u660e\u663e\u3002\u5bf9\u4e8e\u540c\u4e00\u4e2a\u6e90\u6587\u4ef6\uff0c\u540c\u4e00\u4e2a\u51fd\u6570\uff0c\u4f7f\u7528\u4e0d\u540c\u7684\u7f16\u8bd1\u5668\u4e0b\u7f16\u8bd1\u51fa\u4e86\u4e0d\u540c\u7684\u7ed3\u679c\u3002gcc\u7f16\u8bd1\u540e\u8fd8\u662fScardOpen<\/em>\uff0c\u800cg++\u7f16\u8bd1\u540e\u53d8\u6210\u4e86_Z9SCardOpenv<\/em>\u3002\u800c\u51fd\u6570\u7684\u5b9e\u73b0\u5219\u662f\u5b8c\u5168\u4e00\u6837\u7684\u3002<\/p>\n
\u56e0\u4e3ag++\u662f\u652f\u6301\u51fd\u6570\u540d\u91cd\u8f7d\u7684\u3002\u6240\u4ee5\u5355\u9760\u51fd\u6570\u540d\u662f\u4e0d\u80fd\u533a\u5206\u4e0d\u540c\u7684\u51fd\u6570\u7684\uff0c\u968f\u610f\u5b83\u5728\u51fd\u6570\u540d\u5b57\u7684\u524d\u540e\u90fd\u52a0\u4e86\u4e00\u4e9b\u5185\u5bb9\u3002\u8fd9\u5c31\u662f\u94fe\u63a5\u4f7f\u7528\u4e0d\u540c\u7684\u7f16\u8bd1\u5668\u7f16\u8bd1\u51fa\u6765\u7684\u52a8\u6001\u94fe\u63a5\u5e93\u65e0\u6cd5\u627e\u5230\u51fd\u6570\u7684\u539f\u56e0\u3002<\/p>\n
\u5982\u4f55\u89e3\u51b3\u5462\u3002\u56e0\u4e3aC++\u662f\u5728C\u4e4b\u540e\u51fa\u73b0\u7684\u3002\u6240\u4ee5C++\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u9009\u9879\u517c\u5bb9C\u8bed\u8a00\u3002\u6211\u4eec\u53ef\u4ee5\u5728\u6211\u4eec\u63d0\u4f9b\u7ed9\u7528\u6237\u7684\u5934\u6587\u4ef6\u91cc\u52a0\u5165extern \u201cC\u201d {} \u89e3\u51b3\u95ee\u9898<\/p>\n
\u6bd4\u5982\uff1a<\/p>\n
#if defined(__cplusplus)\r\nextern \"C\" {\r\n#endif\r\n\r\nextern void *SCardOpen(void);\r\n\r\n#if defined(__cplusplus)\r\n}\r\n#endif<\/pre>\n
g++\u53d1\u73b0\u6709extern \u201cC\u201d\u5305\u542b\u7684\u4e1c\u897f\u4f1a\u4ee5C\u7684\u65b9\u5f0f\u94fe\u63a5\uff0c\u800c\u5b9a\u4e49\u4e86__cpluspluc\u5219\u8868\u793a\u5982\u679c\u4f7f\u7528g++\u7f16\u8bd1\u5219\u5b9a\u4e49extern \u201cC\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"
\u901a\u5e38\u6211\u4eec\u4f1a\u7528gcc\u7f16\u8bd1\u52a8\u6001\u94fe\u63a5\u5e93\u7ed9\u7528\u6237\u4f7f\u7528\uff0c\u800c\u7528\u6237\u5219\u53ef\u80fd\u4f7f\u7528g++\u3002\u8fd9\u6837\u5c31\u4f1a\u6709\u4e00\u4e2a\u95ee\u9898\uff0c\u94fe\u63a5\u7684\u65f6\u5019\u7ecf\u5e38\u627e\u4e0d\u5230\u51fd\u6570\u3002\u5982\u4f55\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5462\uff0c\u6211\u4eec\u5148\u770b\u4ee5\u4e0b\u4e3a\u4ec0\u4e48\u627e\u4e0d\u5230\u3002 \u5927\u5bb6\u77e5\u9053\uff0cc++\u662f\u652f\u6301\u51fd\u6570\u91cd\u8f7d\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u76f8\u540c\u540d\u5b57\u7684\u51fd\u6570\u53ef\u4ee5\u5728c++\u4e2d\u5b9a\u4e49\u591a\u6b21\uff0c\u53ea\u9700\u8981\u8fd4\u56de\u503c\u6216\u8005\u51fd\u6570\u53c2\u6570\u4e0d\u540c\u5373\u53ef\u3002 \u6211\u4eec\u5206\u522b\u7528g++\u548cgcc\u7f16\u8bd1\u540c\u4e00\u4e2a\u6587\u4ef6\u770b\u770b\u5176\u751f\u6210\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u3002 void *SCardOpen(void) { } \u4f7f\u7528gcc\u7f16\u8bd1\u540e kaoru@dev:\/data\/libscard.git$ arm-linux-objdump -D scard_open.o scard_open.o: file format elf32-littlearm Disassembly of section .text: 00000000 : 0: e1a0c00d mov ip, sp 4: e92dd800 stmdb…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[64],"tags":[60,59],"class_list":["post-498","post","type-post","status-publish","format-standard","hentry","category-compile","tag-dll","tag-link"],"_links":{"self":[{"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/498","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=498"}],"version-history":[{"count":23,"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/498\/revisions"}],"predecessor-version":[{"id":589,"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/498\/revisions\/589"}],"wp:attachment":[{"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=498"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/kaoru.tech:7000\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}