{"id":2272,"date":"2022-04-15T15:53:46","date_gmt":"2022-04-15T07:53:46","guid":{"rendered":"https:\/\/www.xianwaizhiyin.net\/?p=2272"},"modified":"2022-06-11T01:59:38","modified_gmt":"2022-06-10T17:59:38","slug":"%e3%80%8a%e7%bc%96%e8%af%91%e7%b3%bb%e7%bb%9f-%e8%87%aa%e5%ba%95%e5%90%91%e4%b8%8a%e7%a0%94%e7%a9%b6%e6%96%b9%e6%b3%95%e3%80%8b%e6%b1%87%e7%bc%96%e5%99%a8%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=2272","title":{"rendered":"\u300a\u7f16\u8bd1\u7cfb\u7edf-\u81ea\u5e95\u5411\u4e0a\u7814\u7a76\u65b9\u6cd5\u300b\u6c47\u7f16\u5668\u5206\u6790"},"content":{"rendered":"\n<p>\u4e4b\u524d\u7684\u6587\u7ae0 <a href=\"https:\/\/www.xianwaizhiyin.net\/?p=2219\">\u300a\u7f16\u8bd1\u7cfb\u7edf-\u81ea\u5e95\u5411\u4e0a\u7814\u7a76\u65b9\u6cd5\u300bELF\u7b26\u53f7\u6bb5<\/a>\uff0c<a href=\"https:\/\/www.xianwaizhiyin.net\/?p=2253\">\u300a\u7f16\u8bd1\u7cfb\u7edf-\u81ea\u5e95\u5411\u4e0a\u7814\u7a76\u65b9\u6cd5\u300b\u94fe\u63a5\u5668\u5206\u6790<\/a>\uff0c \u5df2\u7ecf\u8bb2\u89e3\u4e86 \u53ef\u8fd0\u884c\u6587\u4ef6\u683c\u5f0f ELF \u4ee5\u53ca \u94fe\u63a5\u5668\u7684\u4e00\u4e9b\u4e3b\u8981\u7684\u4f5c\u7528\u3002<\/p>\n\n\n\n<p>\u65e0\u8bba\u662f \u64cd\u4f5c\u7cfb\u7edf\u8fd0\u884c <strong>\u53ef\u6267\u884c\u6587\u4ef6<\/strong>\uff0c\u8fd8\u662f \u94fe\u63a5\u5668 \u628a\u591a\u4e2a <code class=\"prettyprint\" >.o<\/code> \u76ee\u6807\u6587\u4ef6\u5408\u5e76\u5728\u4e00\u8d77\uff0c\u4ed6\u4eec\u64cd\u4f5c\u7684\u90fd\u662f\u4e8c\u8fdb\u5236\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u800c \u672c\u6587\u8981\u8bb2\u7684\u6c47\u7f16\u5668\uff0c\u64cd\u4f5c\u7684\u662f ASII \u7801\uff0c\u4e5f\u5c31\u662f\u6587\u672c\u5b57\u7b26\u4e32\u3002\u5b9e\u9645\u4e0a\uff0c\u5904\u7406 \u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u6bd4\u6587\u672c\u6570\u636e \u65b9\u4fbf\u5f97\u591a\uff0c\u8bfb\u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u53ea\u9700\u8981\u4e00\u4e2a\u7ed3\u6784\u4f53\u4e0d\u65ad\u89e3\u6790\u5c31\u884c\u4e86\uff0c\u4e8c\u8fdb\u5236\u6570\u636e\u662f\u975e\u5e38\u89c4\u8303\u5316\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u800c\u89e3\u6790\u6587\u672c\u5b57\u7b26\u4e32\uff0c\u9700\u8981\u7528\u5230\u7684\u6280\u672f\u590d\u6742\u4e00\u70b9\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>google_ads_content<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u5148\u7ed9\u4e00\u4e2a <code class=\"prettyprint\" >main.c<\/code> \u7684\u6587\u4ef6\u6e90\u7801\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >int sum(int *a,int n);\nint array&#091;3] = {7,5,1};\n\u200b\nint main() {\n    int val = sum(array,3);\n    return val;\n}<\/code><\/pre>\n\n\n\n<p>\u5bf9\u5e94\u7684\u6c47\u7f16\u6307\u4ee4\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  array\n    .data\n    .align 8\n    .type   array, @object\n    .size   array, 12\narray:\n    .long   7\n    .long   5\n    .long   1\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    $3, %esi\n    leaq    array(%rip), %rdi\n    call    sum@PLT\n    movl    %eax, -4(%rbp)\n    movl    $8, %eax\n    movl    -4(%rbp), %eax\n    movl    %ebx, %eax\n    movl    %eax, -4(%rbp)\n    leave\n    .cfi_def_cfa 7, 8\n    ret\n    .cfi_endproc\n.LFE0:\n    .size   main, .-main\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>C\u7a0b\u5e8f\u4ee3\u7801\u4e0d\u7528\u7ba1\uff0c\u54b1\u4eec\u4e3b\u8981\u770b \u6c47\u7f16\u4ee3\u7801\u3002\u5148\u770b\u8fd9\u4e24\u6761 \u6c47\u7f16\u4ee3\u7801\uff0c<code class=\"prettyprint\" >movl $3, %esi<\/code>\uff0c<code>movl -4(%rbp), %eax<\/code> \uff0c\u8fd9\u4e24\u6761\u6307\u4ee4\u90fd\u662f\u4ece\u4e0a\u9762\u7684\u4ee3\u7801\u6458\u4e0b\u6765\u7684\u3002\u6211\u4eec\u770b\u4e00\u4e0b\u8fd9\u4e24\u6761\u6c47\u7f16\u6700\u540e\u751f\u6210\u7684\u673a\u5668\u7801\u662f\u600e\u6837\u7684\uff0c\u8fd8\u662f\u7528\u7684 <code>objdump<\/code> \u547d\u4ee4\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"701\" height=\"362\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/byxt-6-1.png\" alt=\"\" class=\"wp-image-2274\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/byxt-6-1.png 701w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/byxt-6-1-300x155.png 300w\" sizes=\"auto, (max-width: 701px) 100vw, 701px\" \/><\/figure>\n\n\n\n<p>\u5982\u4e0a\u56fe\u6240\u793a\uff0c<code class=\"prettyprint\" >8b<\/code> \u8ddf <code>be<\/code> \u8fd9\u4e24\u4e2a\u673a\u5668\u7801\u90fd\u662f <code>mov<\/code> \u6307\u4ee4\u3002\u5b9e\u9645\u4e0a\uff0c\u6c47\u7f16\u6307\u4ee4\u8ddf\u673a\u5668\u7801\u662f \u4e00\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u6839\u636e\u53c2\u6570\u7684\u4e0d\u540c\uff0c\u6307\u4ee4\u673a\u5668\u7801\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u6211\u518d\u591a\u52a0\u51e0\u6761\u4e0d\u540c\u53c2\u6570\u7684 <code>mov<\/code> \u6307\u4ee4\uff0c\u65b9\u4fbf\u5bf9\u7167\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"738\" height=\"377\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/byxt-6-2.png\" alt=\"\" class=\"wp-image-2275\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/byxt-6-2.png 738w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/04\/byxt-6-2-300x153.png 300w\" sizes=\"auto, (max-width: 738px) 100vw, 738px\" \/><\/figure>\n\n\n\n<p>\u4e00\u6761 <code class=\"prettyprint\" >mov<\/code> \u6307\u4ee4 \u6709 3\u4e2a \u7b26\u53f7\uff08token\uff09\uff0c<code>mov<\/code> \u6307\u4ee4\u673a\u5668\u7801\uff0c\u6e90\u6570\u636e\uff0c\u76ee\u7684\u5730\u3002\u6e90\u6570\u636e\u6709 3 \u79cd\u7c7b\u578b\uff1a<\/p>\n\n\n\n<p>1\uff0c\u7acb\u5373\u6570\uff0c\u4f8b\u5982 $8 \uff0c\u7b2c\u4e00\u6761\u6307\u4ee4\u662f\u628a 8 \u76f4\u63a5\u653e\u8fdb\u53bb <code class=\"prettyprint\" >eax<\/code> \u5bc4\u5b58\u5668\u3002AT&amp;T \u7684\u6c47\u7f16\u8bed\u6cd5\uff0c\u7acb\u5373\u6570\u524d\u9762\u8981\u52a0 $ \u3002<\/p>\n\n\n\n<p>2\uff0c\u5185\u5b58\u5730\u5740\uff0c<code class=\"prettyprint\" >-0x4(%rbp)<\/code> \u5c31\u662f\u5185\u5b58\u5730\u5740\uff0c\u628a\u8fd9\u4e2a\u5730\u5740\u76844\u4e2a\u5b57\u8282\u5185\u5bb9 \u590d\u5236\u7ed9 <code>eax<\/code> \u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n<p>3\uff0c\u5bc4\u5b58\u5668\uff0c\u6e90\u6570\u636e \u662f\u5bc4\u5b58\u5668\uff0c\u4f8b\u5982\u628a <code class=\"prettyprint\" >ebx<\/code> \u5bc4\u5b58\u5668\u7684\u5185\u5b58 \u590d\u5236 \u7ed9 <code>eax<\/code> \u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n<p>\u6839\u636e \u6e90\u6570\u636e \u7c7b\u578b\u7684\u4e0d\u540c\uff0c<code class=\"prettyprint\" >mov<\/code> \u5bf9\u5e94\u7684\u673a\u5668\u7801\u4e5f\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u4e0a\u56fe\u53ef\u4ee5\u770b\u51fa\uff0c\u5206\u522b\u662f b8 \uff0c8b\uff0c89\uff0c\u8fd93\u4e2a\u90fd\u5bf9\u5e94\u7740 <code>mov<\/code> \u6307\u4ee4\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5 \u6c47\u7f16\u5668 as \u5728\u5bf9 \u6c47\u7f16\u6307\u4ee4 \u505a\u8bcd\u6cd5\u5206\u6790\u7684\u65f6\u5019\uff0c\u53ea\u8981\u62c6\u51fa\u6765 3 \u4e2a\u7b26\u53f7 <code class=\"prettyprint\" >mov<\/code> \u6307\u4ee4\u673a\u5668\u7801\uff0c\u6e90\u6570\u636e\uff0c\u76ee\u7684\u5730\u3002\u5224\u65ad\u6e90\u6570\u636e\u662f\u54ea\u4e00\u79cd\uff0c\u5c31\u80fd\u751f\u6210\u5bf9\u5e94\u7684\u673a\u5668\u7801\u3002\u8fd9\u91cc\u7684 ASII \u7801\u8f6c\u6210 \u4e8c\u8fdb\u5236\u6307\u4ee4\uff0c\u5b9e\u9645\u4e0a\u53ea\u662f\u4e00\u4e2a\u627e\u5bf9\u5e94\u7684\u8fc7\u7a0b\u3002\u7531\u4e8e \u6c47\u7f16\u5668\u4e0d\u4f1a\u505a \u903b\u8f91\u4f18\u5316 \uff0c\u6240\u4ee5\u4ed6\u7684\u7f16\u8bd1\u8fc7\u7a0b\u5b9e\u9645\u4e0a\u975e\u5e38\u7b80\u5355\u3002\u903b\u8f91\u4f18\u5316\u5df2\u7ecf\u88ab\u4e0a\u9762\u7684 \u7f16\u8bd1\u5668\u7ed9\u505a\u4e86\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u6c47\u7f16\u5668 as \u9664\u4e86\u6839\u636e \u4e00\u5bf9\u591a \u89c4\u5219\uff0c\u628aASII \u7801\u6307\u4ee4 \u8f6c\u6210 \u4e8c\u8fdb\u5236\u6307\u4ee4\u4e4b\u5916\uff0c\u8fd8\u6709\u4e00\u4e2a\u6bd4\u8f83\u91cd\u8981\u7684\u4e8b\u60c5\uff0c\u6c47\u7f16\u5668\u4e5f\u505a\u4e86\u3002<\/p>\n\n\n\n<p>\u5c31\u662f\u751f\u6210 ELF \u6587\u4ef6\u683c\u5f0f\uff0c\u5934\u90e8\uff0c\u6bb5\u8868\u554a\uff0c\u8fd9\u4e9b\u4e1c\u897f\u3002\u6c47\u7f16\u5668\u4f1a\u6839\u636e\u4e0d\u540c\u7684\u5e73\u53f0\u751f\u6210\u4e0d\u540c\u7684\u6587\u4ef6\u683c\u5f0f\uff0c\u4f8b\u5982 Windows \u5e73\u53f0\u7684\u662f PE \u683c\u5f0f\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u8bb2\u4e00\u4e2a\u6269\u5c55\u7684\u77e5\u8bc6\u70b9\uff0cASII\u7801\u6c47\u7f16\u6307\u4ee4 \u8ddf \u4e8c\u8fdb\u5236\u6307\u4ee4 \u8de8\u5e73\u53f0\u90fd\u662f\u5f88\u4f4e\u7684\uff0c\u4f46\u662f\u4ed6\u4eec\u7684\u8de8\u5e73\u53f0\u53c8\u6709\u70b9\u533a\u522b\uff0c\u4e8c\u8fdb\u5236\u6307\u4ee4\u5b9e\u9645\u4e0a\u662f CPU \u6307\u4ee4\uff0c\u53ea\u8981 CPU \u67b6\u6784\u4e00\u6837\u5c31\u80fd\u8fd0\u884c\u3002\u4f46\u662f \u6c47\u7f16\u6307\u4ee4 \u6709\u5f88\u591a\u79cd\u98ce\u683c\uff0c\u4f8b\u5982 AT&amp;T \u8ddf intel \u98ce\u683c\u3002<\/p>\n\n\n\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u4e00\u4e2a intel I7 \u7684\u673a\u5668\u88c5\u4e86\u4e2a windows10 \u7cfb\u7edf\uff0c\u7f16\u8bd1 <code class=\"prettyprint\" >main.c<\/code> \u751f\u6210\u7684\u662f <code>intel<\/code> \u98ce\u683c\u7684\u6c47\u7f16\u6307\u4ee4\u3002\u4e00\u4e2a intel I7 \u7684\u673a\u5668\u88c5\u4e86\u4e2a ubuntu18\u7cfb\u7edf\uff0c\u7f16\u8bd1 <code>main.c<\/code> \u751f\u6210\u7684\u662f <code>AT&amp;T<\/code> \u98ce\u683c\u7684\u6c47\u7f16\u6307\u4ee4\uff0c\u8fd9\u4e24\u79cd\u6c47\u7f16\u6307\u4ee4\u8bed\u6cd5\u6709\u70b9\u5dee\u5f02\uff0c\u4e92\u4e0d\u901a\u7528\u7684\uff0c\u4f46\u662f\u4ed6\u4eec\u7f16\u8bd1\u51fa\u6765\u7684\u4e8c\u8fdb\u5236\u673a\u5668\u7801\u662f\u4e00\u6837\u7684\u3002\u56e0\u4e3a\u5927\u5bb6\u90fd\u662f I7 \u7684CPU\u3002<\/p>\n\n\n\n<p>\u4e0b\u7bc7\u6587\u7ae0\u4f1a\u7528 <code class=\"prettyprint\" >clion<\/code> 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