{"id":1089,"date":"2022-04-23T19:31:34","date_gmt":"2022-04-23T11:31:34","guid":{"rendered":"https:\/\/www.zhiwanyuzhou.com\/?p=1089"},"modified":"2022-06-11T17:50:42","modified_gmt":"2022-06-11T09:50:42","slug":"gdb%e4%bd%bf%e7%94%a8%e5%b0%8f%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/www.zhiwanyuzhou.com\/index.php\/2022\/04\/23\/gdb%e4%bd%bf%e7%94%a8%e5%b0%8f%e8%ae%b0\/","title":{"rendered":"GDB\u4f7f\u7528\u5c0f\u8bb0"},"content":{"rendered":"\n<p>GDB\u662fGNU\u5f00\u6e90\u7ec4\u7ec7\u53d1\u5e03\u7684\u4e00\u4e2a\u5f3a\u5927\u7684Linux\u4e0b\u7684\u7a0b\u5e8f\u8c03\u8bd5\u5de5\u5177\uff0cGDB\u9664\u652f\u6301c\/c++\u8bed\u8a00\u5916\u8fd8\u652f\u6301go\u3001D\u3001object-c\u3001fortran\u7b49\u8bed\u8a00\u3002<\/p>\n\n\n\n<p>\u6e90\u7801\u4e0b\u8f7d\u94fe\u63a5\uff0c\u53ef\u4ee5\u4ea4\u53c9\u7f16\u8bd1\u652f\u6301\u591a\u79cdCPU\u67b6\u6784\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>http:\/\/ftp.gnu.org\/gnu\/gdb\/<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>GDB\u4e3b\u8981\u5e2e\u52a9\u4f60\u5b8c\u6210\u4e0b\u9762\u56db\u4e2a\u65b9\u9762\u7684\u529f\u80fd\uff1a<\/p>\n\n\n\n<ul><li>\u542f\u52a8\u4f60\u7684\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u6309\u7167\u4f60\u7684\u81ea\u5b9a\u4e49\u7684\u8981\u6c42\u968f\u5fc3\u6240\u6b32\u7684\u8fd0\u884c\u7a0b\u5e8f\u3002<\/li><li>\u53ef\u8ba9\u88ab\u8c03\u8bd5\u7684\u7a0b\u5e8f\u5728\u4f60\u6240\u6307\u5b9a\u7684\u8c03\u7f6e\u7684\u65ad\u70b9\u5904\u505c\u4f4f\u3002\uff08\u65ad\u70b9\u53ef\u4ee5\u662f\u6761\u4ef6\u8868\u8fbe\u5f0f\uff09<\/li><li>\u5f53\u7a0b\u5e8f\u88ab\u505c\u4f4f\u65f6\uff0c\u53ef\u4ee5\u68c0\u67e5\u6b64\u65f6\u4f60\u7684\u7a0b\u5e8f\u4e2d\u6240\u53d1\u751f\u7684\u4e8b\u3002<\/li><li>\u4f60\u53ef\u4ee5\u6539\u53d8\u4f60\u7684\u7a0b\u5e8f\uff0c\u5c06\u4e00\u4e2aBUG\u4ea7\u751f\u7684\u5f71\u54cd\u4fee\u6b63\u4ece\u800c\u6d4b\u8bd5\u5176\u4ed6BUG\u3002<\/li><\/ul>\n\n\n\n<p>\u672c\u5730\u8c03\u8bd5\u4e00\u822c\u662f\u4f7f\u7528gdb\uff0c\u8fdc\u7a0b\u8c03\u8bd5\u662fgdbserver\uff0c\u901a\u5e38gdbserver\u4e0d\u4ec5\u53ef\u4ee5\u548cgdb\u4e00\u8d77\u8c03\u8bd5\uff0c\u8fd8\u53ef\u4ee5\u548cIDA\u7b49\u7b2c\u4e09\u65b9\u8c03\u8bd5\u5de5\u5177\u4e00\u8d77\u8c03\u8bd5\uff0c\u4e00\u822c\u6709\u4e24\u79cd\u8c03\u8bd5\u65b9\u6cd5\uff0c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td># 1088\u662f\u8fdb\u7a0bpid\uff0c\u7aef\u53e31234\uff0c\u4efb\u610fip\u5747\u53ef\u8bbf\u95ee\u8c03\u8bd5<br>.\/gdbserver :1234 --attach 1088<br># program\u662f\u7a0b\u5e8f\u540d\u79f0\uff0c\u7aef\u53e31234\uff0c\u4efb\u610fip\u5747\u53ef\u8bbf\u95ee\u8c03\u8bd5<br>.\/gdbserver :1234 --attach program<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>gdbserver\u4f7f\u7528\u8f83\u4e3a\u7b80\u5355\uff0c\u8fd9\u91cc\u5c31\u4e0d\u8fc7\u591a\u4ecb\u7ecd\uff0c\u4e0b\u9762\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0bgdb\u7684\u4e00\u4e9b\u5e38\u7528\u547d\u4ee4\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5e8f\u53f7<\/td><td>\u547d\u4ee4<\/td><td>\u7b80\u5199<\/td><td>\u529f\u80fd<\/td><td>\u793a\u4f8b\u53ca\u8bf4\u660e<\/td><\/tr><tr><td>1<\/td><td>run<\/td><td>r<\/td><td>\u8fd0\u884c<\/td><td>\u8fd0\u884c\u7a0b\u5e8f<\/td><\/tr><tr><td>2<\/td><td>continue<\/td><td>c<\/td><td>\u7ee7\u7eed<\/td><td>c 2\u8868\u793a\u7ee7\u7eed2\u6b21\uff0c\u53ea\u5199c\u8868\u793a\u7ee7\u7eed1\u6b21<\/td><\/tr><tr><td>3<\/td><td>break<\/td><td>b<\/td><td>\u8bbe\u7f6e\u65ad\u70b9<\/td><td>b main\u8868\u793a\u5728main\u51fd\u6570\u4e0b\u65ad\u70b9<br>b *0x1234\u8868\u793a\u5728\u5185\u5b580x1234\u4e0b\u65ad\u70b9<br>info break\uff08\u7b80\u5199\u4e3ai b\uff09\uff1a\u67e5\u770b\u65ad\u70b9<\/td><\/tr><tr><td>4<\/td><td>delete<\/td><td>d<\/td><td>\u5220\u9664\u65ad\u70b9<\/td><td>delete \u65ad\u70b9\u7f16\u53f7<\/td><\/tr><tr><td>5<\/td><td>disable<\/td><td>disable<\/td><td>\u7981\u7528\u65ad\u70b9<\/td><td>disable \u65ad\u70b9\u7f16\u53f7<\/td><\/tr><tr><td>6<\/td><td>info<\/td><td>i<\/td><td>\u67e5\u770b\u4fe1\u606f<\/td><td>info args\uff1a\u67e5\u770b\u5f53\u524d\u51fd\u6570\u7684\u53c2\u6570\u53ca\u5176\u503c<br>info line\uff1a\u67e5\u770b\u6e90\u4ee3\u7801\u5728\u5185\u5b58\u4e2d\u5730\u5740\uff0c\u53ef\u4ee5\u8ddf\u884c\u53f7\u3001\u51fd\u6570\u540d<br>info locals\uff1a\u663e\u793a\u5f53\u524d\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf<br>info symbol\uff1a\u663e\u793a\u5168\u5c40\u53d8\u91cf\u4fe1\u606f<br>info function\uff1a\u663e\u793a\u6240\u6709\u51fd\u6570\u540d\u79f0<br>info thread\uff1a\u67e5\u770b\u7ebf\u7a0b\u4fe1\u606f<br>info registers\uff08\u7b80\u5199\u4e3ainfo r\uff09\uff1a\u5217\u4e3e\u5bc4\u5b58\u5668\u503c<br>i proc map\uff1a\u6253\u5370\u5f53\u524d\u8fdb\u7a0bmap\u4fe1\u606f<\/td><\/tr><tr><td>7<\/td><td>backtrace<\/td><td>bt<\/td><td>\u67e5\u770b\u6808\u5e27<\/td><td>bt 2\u8868\u793a\u663e\u793a\u5f00\u5934N\u4e2a\u6808\u5e27\uff0c bt -2\u6700\u540e2\u4e2a\u6808\u5e27<\/td><\/tr><tr><td>8<\/td><td>x<\/td><td>x<\/td><td>\u663e\u793a\u5185\u5b58<\/td><td>x\/32xb $esp \u4ee516\u8fdb\u5236\u6570\u636e\u663e\u793a$esp\u5bc4\u5b58\u5668\u6307\u5411\u7684\u6570\u636e<br>x\/32i $pc \u4ee5\u6c47\u7f16\u663e\u793a\u5f53\u524d\u8fd0\u884c\u5730\u5740\u7684\u6570\u636e<br>x \/16s 0x86468700&nbsp;\u4ee5\u5b57\u7b26\u4e32\u5f62\u5f0f\u663e\u793a\u6307\u5b9a\u5730\u5740\u5904\u7684\u6570\u636e<\/td><\/tr><tr><td>9<\/td><td>print<\/td><td>p<\/td><td>\u6253\u5370\u53d8\u91cf<\/td><td>p argc\uff1a\u6253\u5370\u53d8\u91cf<br>p\/x malloc(1024)\uff1a\u7533\u8bf7\u5185\u5b58<br>p\/x memcpy(0x1000, 0x2000, 10)\uff1a\u5c060x2000\u5185\u5b58\u5730\u5740\u7684\u6570\u636e\u62f7\u8d1d10\u4e2a\u5b57\u8282\u52300x1000\u5185\u5b58\u5730\u5740<\/td><\/tr><tr><td>10<\/td><td>set<\/td><td>set<\/td><td>\u6539\u53d8\u53d8\u91cf\u503c<\/td><td>set $v0 = 0x004000000<br>set *(unsigned int*)0x8048a54=0x55aa55aa<\/td><\/tr><tr><td>11<\/td><td>next<\/td><td>n<\/td><td><br>\u6267\u884c\u4e0b\u4e00\u884c<\/td><td>\u5355\u6b65\u6b65\u8fc7\uff0c\u6267\u884c\u5230\u4e0b\u4e00\u884c\uff0c\u4e0d\u7ba1\u4e0b\u4e00\u884c\u591a\u590d\u6742<\/td><\/tr><tr><td>12<\/td><td>step<\/td><td>s<\/td><td>\u6267\u884c\u4e0b\u4e00\u884c<\/td><td>\u5355\u6b65\u6b65\u5165\uff0c\u82e5\u4e0b\u4e00\u884c\u4e3a\u51fd\u6570\uff0c\u5219\u8fdb\u5165\u51fd\u6570\u5185\u90e8<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u6570\u636e\u683c\u5f0f<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5e8f\u53f7<\/td><td>\u683c\u5f0f<\/td><td>\u8bf4\u660e<\/td><\/tr><tr><td>1<\/td><td>x<\/td><td>\u663e\u793a\u4e3a16\u8fdb\u5236<\/td><\/tr><tr><td>2<\/td><td>d<\/td><td>\u663e\u793a\u4e3a10\u8fdb\u5236<\/td><\/tr><tr><td>3<\/td><td>u<\/td><td>\u663e\u793a\u4e3a\u65e0\u7b26\u53f710\u8fdb\u5236<\/td><\/tr><tr><td>4<\/td><td>o<\/td><td>\u663e\u793a\u4e3a8\u8fdb\u5236<\/td><\/tr><tr><td>5<\/td><td>t<\/td><td>\u663e\u793a\u4e3a2\u8fdb\u5236\u6570\uff0ct\u8868\u793atwo<\/td><\/tr><tr><td>6<\/td><td>a<\/td><td>\u5730\u5740<\/td><\/tr><tr><td>7<\/td><td>c<\/td><td>\u663e\u793a\u4e3a\u5b57\u7b26<\/td><\/tr><tr><td>8<\/td><td>f<\/td><td>\u6d6e\u70b9\u5c0f\u6570<\/td><\/tr><tr><td>9<\/td><td>s<\/td><td>\u663e\u793a\u4e3a\u5b57\u7b26\u4e32<\/td><\/tr><tr><td>10<\/td><td>i<\/td><td>\u663e\u793a\u4e3a\u6c47\u7f16<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5176\u5b83\u7528\u6cd5<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5e8f\u53f7<\/td><td>\u547d\u4ee4<\/td><td>\u8bf4\u660e<\/td><\/tr><tr><td>1<\/td><td>info line *0x00123456<\/td><td>\u67e5\u770b\u67d0\u4e2a\u5730\u5740\u610f\u4e49\uff0c\u4f1a\u6253\u5370\u51fa\u8fd9\u4e2a\u51fd\u6570\u540d<\/td><\/tr><tr><td>2<\/td><td>set height 0<\/td><td>\u53bb\u6389less\u7684\u529f\u80fd\uff0c\u4e00\u6b21\u6027\u6253\u5370\u6240\u6709<\/td><\/tr><tr><td>3<\/td><td>thread apply all bt<\/td><td>\u6253\u5370\u6240\u6709\u7ebf\u7a0b\u5806\u6808<\/td><\/tr><tr><td>4<\/td><td>set print pretty on<\/td><td>\u4ee5\u7f8e\u89c2\u683c\u5f0f\u6253\u5370<\/td><\/tr><tr><td>5<\/td><td>ptype val<\/td><td>\u67e5\u770b\u7ed3\u6784\u4f53\u5b9a\u4e49<\/td><\/tr><tr><td>6<\/td><td>dump memory 1.txt 0x1000 0x2000<\/td><td>\u5c060x1000-0x2000\u5185\u5b58\u6570\u636e\u5199\u5230\u6587\u4ef61.txt<\/td><\/tr><tr><td>7<\/td><td>disassemble \/m<\/td><td>\u53cd\u6c47\u7f16<\/td><\/tr><tr><td>8<\/td><td>set follow-fork-mode child<\/td><td>\u8c03\u8bd5\u5b50\u8fdb\u7a0b<\/td><\/tr><tr><td>9<\/td><td>set scheduler-locking on<\/td><td>\u8c03\u8bd5\u52a0\u9501\u5f53\u524d\u7ebf\u7a0b\uff0c\u505c\u6b62\u6240\u6709\u5176\u4ed6\u7ebf\u7a0b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u9644\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td># \u5f00\u542fcore\u6587\u4ef6\u8f6c\u50a8<br>ulimit -c unlimited<br>echo \"\/tmp\/core-%e-%p-%t\" &gt; \/proc\/sys\/kernel\/core_pattern<br># gdb\u8c03\u8bd5core\u6587\u4ef6<br>gdb -c \"\/tmp\/core-filename-pid-timestamp\"<br># gdb\u8fd0\u884c\u7684\u65f6\u5019\u540c\u65f6\u6267\u884c\u8fd0\u884c\u5e76\u6253\u5370proc map\u5185\u5bb9<br>gdb filename --eval-command=\"r\" --eval-command=\"i proc map\"<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u53c2\u8003\u94fe\u63a5\uff1a<\/p>\n\n\n\n<p><a href=\"https:\/\/baike.baidu.com\/item\/gdb\/10869514?fr=aladdin\">https:\/\/baike.baidu.com\/item\/gdb\/10869514?fr=aladdin<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/blog.csdn.net\/weixin_37921201\/article\/details\/120117096\">https:\/\/blog.csdn.net\/weixin_37921201\/article\/details\/120117096<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.cnblogs.com\/lvdongjie\/p\/8994092.html\">https:\/\/www.cnblogs.com\/lvdongjie\/p\/8994092.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>GDB\u662fGNU\u5f00\u6e90\u7ec4\u7ec7\u53d1\u5e03\u7684\u4e00\u4e2a\u5f3a\u5927\u7684Linux\u4e0b\u7684\u7a0b\u5e8f\u8c03\u8bd5\u5de5\u5177\uff0cGDB\u9664\u652f\u6301c\/c++\u8bed\u8a00\u5916\u8fd8\u652f\u6301go\u3001D\u3001object-c\u3001fortran\u7b49\u8bed\u8a00\u3002 \u6e90\u7801\u4e0b\u8f7d\u94fe\u63a5\uff0c\u53ef\u4ee5\u4ea4\u53c9\u7f16\u8bd1\u652f\u6301\u591a\u79cdCPU\u67b6\u6784\uff1a \u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[16],"tags":[],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":5}},"_links":{"self":[{"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/posts\/1089"}],"collection":[{"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/comments?post=1089"}],"version-history":[{"count":9,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/posts\/1089\/revisions"}],"predecessor-version":[{"id":1239,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/posts\/1089\/revisions\/1239"}],"wp:attachment":[{"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/media?parent=1089"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/categories?post=1089"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/tags?post=1089"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}