{"id":1893,"date":"2022-04-06T20:09:44","date_gmt":"2022-04-06T12:09:44","guid":{"rendered":"https:\/\/www.xianwaizhiyin.net\/?p=1893"},"modified":"2022-06-11T02:04:50","modified_gmt":"2022-06-10T18:04:50","slug":"c%e7%a8%8b%e5%ba%8f%e7%bc%96%e8%af%91%e9%93%be%e6%8e%a5%e5%85%a8%e8%bf%87%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=1893","title":{"rendered":"C\u7a0b\u5e8f\u7f16\u8bd1\u94fe\u63a5\u5168\u8fc7\u7a0b"},"content":{"rendered":"\n<p>\u672c\u6587\u4e3b\u8981\u5bf9 C \u7a0b\u5e8f\u7684\u7f16\u8bd1\uff0c\u94fe\u63a5\u7b49\u8fc7\u7a0b\u505a\u4e00\u4e2a\u7b80\u5355\u7684\u4ecb\u7ecd\uff0c\u73af\u5883\u662f Ubuntu18 + gcc\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p><code class=\"prettyprint\" >main.h<\/code> \u5934\u6587\u4ef6\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >int add(int a,int b)<\/code><\/pre>\n\n\n\n<p><code class=\"prettyprint\" >main.c<\/code> \u6587\u4ef6\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >#include &quot;main.h&quot;\n\u200b\nint main()\n{\n    int age_1 = 12;\n    int age_2 = 13;\n    int age_all = add(age_1,age_2);\n\u200b\n    return age_all;\n}\n\u200b\nint add(int a,int b){\n    return a+b;\n}<\/code><\/pre>\n\n\n\n<p>\u6bd4\u8f83\u4fbf\u6377\u7684\u7f16\u8bd1\u65b9\u6cd5\u662f\u76f4\u63a5\u6267\u884c\u4ee5\u4e0b\u7f16\u8bd1\u547d\u4ee4:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >gcc -o main main.c<\/code><\/pre>\n\n\n\n<p>\u4e0a\u9762\u5f97 <code class=\"prettyprint\" >-o<\/code> \u662f\u6307\u5b9a\u8f93\u51fa\u6587\u4ef6\u540d\u3002\u4f46\u662f\u4e3a\u4e86\u6f14\u793a\u6574\u4e2a\u7f16\u8bd1\u7684\u8fc7\u7a0b\u3002\u4e0b\u9762\u4e00\u6b65\u4e00\u6b65\u6267\u884c\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e00\u6b65\uff0c\u9884\u5904\u7406\uff0c\u5c31\u662f\u628a .c \u6587\u4ef6\u7684 include \u5b8f\u6307\u4ee4\uff0c\u5168\u90e8\u5305\u542b\u8fdb\u6765\u3002\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >gcc -E -o main.i main.c<\/code><\/pre>\n\n\n\n<p>\u4e0a\u9762\u7684 <code class=\"prettyprint\" >-E<\/code> \u9009\u9879\u662f\u544a\u8bc9 gcc \u4e0d\u7528\u7f16\u8bd1\u6216\u8005\u94fe\u63a5\u7a0b\u5e8f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"729\" height=\"432\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-1.png\" alt=\"\" class=\"wp-image-1897\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-1.png 729w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-1-300x178.png 300w\" sizes=\"auto, (max-width: 729px) 100vw, 729px\" \/><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u6253\u5f00 <code class=\"prettyprint\" >main.i<\/code> \u6587\u4ef6\u67e5\u770b\uff0c<code>main.h<\/code> \u5934\u6587\u4ef6\u5df2\u7ecf\u88ab\u5305\u542b\u8fdb\u6765\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"637\" height=\"632\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-2.png\" alt=\"\" class=\"wp-image-1898\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-2.png 637w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-2-300x298.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-2-150x150.png 150w\" sizes=\"auto, (max-width: 637px) 100vw, 637px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>google_ads_content<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u7b2c\u4e8c\u6b65\uff0c\u7f16\u8bd1\uff0c\u4e5f\u5c31\u662f\u628a C\u7a0b\u5e8f \u7ffb\u8bd1\u6210 \u6c47\u7f16\u7a0b\u5e8f\uff0c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >gcc main.i -S -o main.s<\/code><\/pre>\n\n\n\n<p>gcc \u7684\u547d\u4ee4\u53c2\u6570\u89e3\u6790\u7a0b\u5e8f\u6bd4\u8f83\u667a\u80fd\uff0c\u65e0\u8bba\u6211\u628a <code class=\"prettyprint\" >main.i<\/code> \u653e\u5728\u5f00\u5934\u8fd8\u662f\u672b\u5c3e\uff0c\u4ed6\u90fd\u80fd\u8bc6\u522b\u5230\u8fd9\u662f\u8f93\u5165\u6587\u4ef6\u3002\u8ddf FFmpeg \u7684\u547d\u4ee4\u884c\u89e3\u6790\u7c7b\u4f3c\uff0cFFmpeg \u547d\u4ee4\u884c\u7528 <code>-i<\/code> \u6307\u5b9a\u8f93\u5165\uff0c\u5982\u679c\u4e00\u4e2a\u53c2\u6570\u4e0d\u662f\u8f93\u5165\u6587\u4ef6\uff0c\u5c31\u662f\u8f93\u51fa\u6587\u4ef6\u53c2\u6570\u3002<\/p>\n\n\n\n<p>\u751f\u6210\u7684 main.s \u5c31\u662f\u6c47\u7f16\u4ee3\u7801\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >    .file   &quot;main.c&quot;\n    .text\n    .globl  main\n    .type   main, @function\nmain:\n.LFB0:\n    .cfi_startproc\n    pushq   %rbp\n    .cfi_def_cfa_offset 16\n    .cfi_offset 6, -16\n    movq    %rsp, %rbp\n    .cfi_def_cfa_register 6\n    subq    $16, %rsp\n    movl    $12, -12(%rbp)\n    movl    $13, -8(%rbp)\n    movl    -8(%rbp), %edx\n    movl    -12(%rbp), %eax\n    movl    %edx, %esi\n    movl    %eax, %edi\n    call    add\n    movl    %eax, -4(%rbp)\n    movl    -4(%rbp), %eax\n    leave\n    .cfi_def_cfa 7, 8\n    ret\n    .cfi_endproc\n.LFE0:\n    .size   main, .-main\n    .globl  add\n    .type   add, @function\nadd:\n.LFB1:\n    .cfi_startproc\n    pushq   %rbp\n    .cfi_def_cfa_offset 16\n    .cfi_offset 6, -16\n    movq    %rsp, %rbp\n    .cfi_def_cfa_register 6\n    movl    %edi, -4(%rbp)\n    movl    %esi, -8(%rbp)\n    movl    -4(%rbp), %edx\n    movl    -8(%rbp), %eax\n    addl    %edx, %eax\n    popq    %rbp\n    .cfi_def_cfa 7, 8\n    ret\n    .cfi_endproc\n.LFE1:\n    .size   add, .-add\n    .ident  &quot;GCC: (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0&quot;\n    .section    .note.GNU-stack,&quot;&quot;,@progbits<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u8981\u6ce8\u610f\uff0c \u91cc\u9762 \u8c03\u4e86 call add\uff0c \u6240\u4ee5EIP\u5bc4\u5b58\u5668\u7684\u6307\u4ee4\u4f1a\u8fdb\u884c\u8df3\u8f6c\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"573\" height=\"741\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-3.png\" alt=\"\" class=\"wp-image-1895\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-3.png 573w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-3-232x300.png 232w\" sizes=\"auto, (max-width: 573px) 100vw, 573px\" \/><\/figure>\n\n\n\n<p>\u5230\u8fd9\u91cc\uff0c\u867d\u7136 main.s \u5df2\u7ecf\u662f\u6c47\u7f16\u6307\u4ee4\uff0c\u6c47\u7f16\u6307\u4ee4\u662f\u673a\u5668\u6307\u4ee4\u7684\u53ef\u8bfb\u5f62\u5f0f\uff0c\u4f46\u662f\u73b0\u5728\u7684 main.s \u8fd8\u662f ASII\u7801\uff0cCPU \u662f\u4e0d\u53ef\u80fd\u80fd\u6267\u884c ASII\u7801\u7684\uff0c\u5fc5\u987b\u8f6c\u6210\u4e8c\u8fdb\u5236\uff0c\u4e5f\u5c31\u662f\u673a\u5668\u7801\u3002\u518d\u6267\u884c\u4ee5\u4e0b\u7f16\u8bd1\u547d\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >gcc -c -o main.o main.s<\/code><\/pre>\n\n\n\n<p>\u4e0a\u9762\u7684 -c \u9009\u9879\u662f Compile and assemble, but do not link\uff0c\u6b64\u65f6 main.o \u91cc\u9762\u5c31\u662f\u673a\u5668\u7801\u6307\u4ee4\u3002\u7528notepad++ \u67e5\u770b main.o \u7684\u4e8c\u8fdb\u5236\u5185\u5bb9\uff0c\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1021\" height=\"768\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-4.png\" alt=\"\" class=\"wp-image-1896\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-4.png 1021w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-4-300x226.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-4-768x578.png 768w\" sizes=\"auto, (max-width: 1021px) 100vw, 1021px\" \/><\/figure>\n\n\n\n<p>\u57fa\u672c\u4e0a\u662f\u4e00\u6761\u6c47\u7f16\u5bf9\u5e94\u4e00\u6761\u673a\u5668\u7801\u6307\u4ee4\uff0c\u65e2\u7136\u662f\u5bf9\u5e94\u7684\uff0c\u5c31\u627e\u4e00\u4e0b \u76f8\u5173\u7684\u673a\u5668\u7801\uff0c\u770b\u4e00\u4e0b\u76f8\u90bb\u7684\u6c47\u7f16\u6307\u4ee4\u7684\u673a\u5668\u7801\u662f\u4e0d\u662f\u4e5f\u662f\u76f8\u90bb\u7684\u3002\u53ef\u4ee5\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >objdump -sd main.o<\/code><\/pre>\n\n\n\n<p>\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"712\" height=\"720\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-5.png\" alt=\"\" class=\"wp-image-1900\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-5.png 712w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-5-297x300.png 297w\" sizes=\"auto, (max-width: 712px) 100vw, 712px\" \/><\/figure>\n\n\n\n<p>\u5728 nodepad++ \u641c\u7d22 <code class=\"prettyprint\" >8b 55 f8 8b 45 f4<\/code> \uff0c\u8fd9\u662f\u4e24\u6761 mov \u6307\u4ee4\u7684\u673a\u5668\u7801\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1008\" height=\"442\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-6.png\" alt=\"\" class=\"wp-image-1901\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-6.png 1008w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-6-300x132.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/gcc-3-6-768x337.png 768w\" sizes=\"auto, (max-width: 1008px) 100vw, 1008px\" \/><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u6574\u4e2a\u673a\u5668\u7801\u662f\u8fde\u5728\u4e00\u8d77\u7684\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u8bb2\u4e00\u4e2a\u6269\u5c55\u77e5\u8bc6\u70b9\uff0c\u4e0a\u9762 gcc \u628a C\u7a0b\u5e8f\u7ffb\u8bd1\u6210 \u6c47\u7f16\u6307\u4ee4\uff0c\u90fd\u662f\u4ece ASII\u7801\u8f6c\u6210 ASII\u7801\uff0c\u6587\u672c\u8f6c\u6587\u672c\u3002\u6c47\u7f16\u5668\u4e5f\u662f gcc\uff0c\u628a \u6c47\u7f16\u6307\u4ee4 \u8f6c\u6210 \u673a\u5668\u6307\u4ee4\uff0c\u5c31\u662f ASII\u7801\u8f6c\u4e8c\u8fdb\u5236\uff0c\u4e5f\u5c31\u662f\u6587\u672c\u8f6c\u4e8c\u8fdb\u5236\u3002\u8fd8\u6709\u4e00\u79cd\u7f16\u8bd1\u6280\u672f\u662f\u4e8c\u8fdb\u5236\u7ffb\u8bd1\uff0c\u4e5f\u5c31\u662f\u4e8c\u8fdb\u5236\u8f6c\u4e8c\u8fdb\u5236\uff0c\u4e5f\u5c31\u662f\u7ffb\u8bd1\u5668\u628a \u67d0\u6761\u673a\u5668\u6307\u4ee4 \u8f6c\u6362\u6210\u53e6\u4e00\u6761\u673a\u5668\u6307\u4ee4\uff0c\u901a\u5e38\u5728\u865a\u62df\u5316\u9886\u57df\u4f1a\u7528\u5230\u4e8c\u8fdb\u5236\u7ffb\u8bd1\u6280\u672f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u73b0\u5728\u8fd8\u5269 \u6700\u540e\u4e00\u6b65\uff0c\u751f\u6210\u53ef\u6267\u884c\u6587\u4ef6\uff0c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >gcc -o main main.o<\/code><\/pre>\n\n\n\n<p>\u4e0a\u9762\u7684\u547d\u4ee4\u4f1a\u5c06 main.o \u4e0eC\u6807\u51c6\u8f93\u5165\u8f93\u51fa\u5e93\u8fdb\u884c\u8fde\u63a5\uff0c\u6700\u7ec8\u751f\u6210\u7a0b\u5e8f main \u53ef\u6267\u884c\u6587\u4ef6\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u7531\u4e8e\u7b14\u8005\u7684\u6c34\u5e73\u6709\u9650\uff0c \u52a0\u4e4b\u7f16\u5199\u7684\u540c\u65f6\u8fd8\u8981\u53c2\u4e0e\u5f00\u53d1\u5de5\u4f5c\uff0c\u6587\u4e2d\u96be\u514d\u4f1a\u51fa\u73b0\u4e00\u4e9b\u9519\u8bef\u6216\u8005\u4e0d\u51c6\u786e\u7684\u5730\u65b9\uff0c\u6073\u8bf7\u8bfb\u8005\u6279\u8bc4\u6307\u6b63\u3002\u5982\u679c\u8bfb\u8005\u6709\u4efb\u4f55\u5b9d\u8d35\u610f\u89c1\uff0c\u53ef\u4ee5\u52a0\u6211\u5fae\u4fe1 Loken1\uff0cQQ\uff1a2338195090\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4e3b\u8981\u5bf9 C \u7a0b\u5e8f\u7684\u7f16\u8bd1\uff0c\u94fe\u63a5\u7b49\u8fc7\u7a0b\u505a\u4e00\u4e2a\u7b80\u5355\u7684\u4ecb\u7ecd\uff0c\u73af\u5883\u662f Ubuntu18 + gcc\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a ma [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-1893","post","type-post","status-publish","format-standard","hentry","category-32"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u7a0b\u5e8f\u7f16\u8bd1\u94fe\u63a5\u5168\u8fc7\u7a0b - \u5f26\u5916\u4e4b\u97f3<\/title>\n<meta name=\"description\" content=\"C\u7a0b\u5e8f\u7f16\u8bd1\u94fe\u63a5\u5168\u8fc7\u7a0b\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.xianwaizhiyin.net\/?p=1893\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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