{"id":156211,"date":"2020-09-17T02:00:35","date_gmt":"2020-09-16T18:00:35","guid":{"rendered":"http:\/\/4563.org\/?p=156211"},"modified":"2020-09-17T02:00:35","modified_gmt":"2020-09-16T18:00:35","slug":"%e5%85%b3%e4%ba%8e-go-%e5%9c%a8-linux-amd64-%e5%b9%b3%e5%8f%b0%e4%b8%8b%e7%9a%84%e7%b3%bb%e7%bb%9f%e8%b0%83%e7%94%a8%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=156211","title":{"rendered":"\u5173\u4e8e go \u5728 Linux , amd64 \u5e73\u53f0\u4e0b\u7684\u7cfb\u7edf\u8c03\u7528\u95ee\u9898"},"content":{"rendered":"
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\u5173\u4e8e go \u5728 Linux , amd64 \u5e73\u53f0\u4e0b\u7684\u7cfb\u7edf\u8c03\u7528\u95ee\u9898 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : chanchancl <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u6b63\u5e38\u6765\u8bf4\uff0c\u7cfb\u7edf\u8c03\u7528\u4f20\u53c2\u987a\u5e8f\u662f<\/p>\n

EDI, ESI, EDX, ECX, R8, R9<\/p>\n

\u770bclone\u7684\u7cfb\u7edf\u8c03\u7528\u65f6\uff0c\u53d1\u73b0\u4f20\u53c2\u987a\u5e8f\u4e3a EDI, ESI, EDX, R10, R8, R9, R12<\/p>\n

\u8bf7\u95ee\u6709\u4ec0\u4e48\u539f\u56e0\u5417<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (5<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chanchancl <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6bd4\u8f83\u4e86\u4e00\u4e0b\uff0c\u53d1\u73b0\u6211\u624b\u91cc\u7684 go1.15.1 \u7684\u6e90\u7801\uff0c\u548c\u8fde\u63a5\u91cc\u7684 go1.15.2 \u7684\u4ee3\u7801\u53c8\u4e0d\u4e00\u6837\u4e86\u3002\u3002\u3002
    \u8fd9\u4e9b\u5bc4\u5b58\u5668\u91cc\u5230\u5e95\u54ea\u4e9b\u662f\u4f20\u53c2\u7684\u3002\u3002\u54ea\u4e9b\u662f\u4f5c\u4e3a\u5171\u4eab\u7528\u7684\u5462\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chanchancl <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4ee5 1.15 branch \u4f5c\u4e3a\u6807\u51c6<\/p>\n

    [clone]( https:\/\/github.com\/golang\/go\/blob\/release-branch.go1.15\/src\/runtime\/sys_linux_amd64.s#L592)<\/p>\n

    \u4ece\u8fd9\u91cc\u6765\u770b\uff0cR8, R9, R12 \u90fd\u88ab\u540e\u9762\u65b0\u521b\u5efa\u7684 client thread \u4f7f\u7528\u4e86<\/p>\n

    [clone system call]( https:\/\/man7.org\/linux\/man-pages\/man2\/clone.2.html)<\/p>\n

    \u4ece man page \u770b clone \u7cfb\u7edf\u8c03\u7528\u6709 4 \u4e2a\u53c2\u6570\u3002\u3002\u3002\u4e4b\u524d\u770b\u9519\u4e86\u3002\u3002\u3002\u4e00\u76f4\u4ee5\u4e3a clone \u6709 7 \u4e2a\u53c2\u6570<\/p>\n

    \u90a3\u4e48\u521a\u597d\u5bf9\u5e94 DI, SI, DX R10\uff0c\u5206\u522b\u662f int (*fn)(void *), void *stack, int flags, void *arg<\/p>\n

    \u8fd9\u4e2a\u95ee\u9898\u5927\u4f53\u4e0a\u662f\u89e3\u51b3\u4e86<\/p>\n

    \u5269\u4e0b\u7684\u4e00\u4e2a\u5c0f\u95ee\u9898\u5c31\u662f\uff0c \u4e3a\u4ec0\u4e48\u4e0d\u7528 CX \u548c R11<\/p>\n

    \u6ce8\u91ca\u91cc\u6709\u8bf4<\/p>\n

    \/\/ Careful: Linux system call clobbers CX and R11.<\/p>\n

    \u8fd9\u6709\u4ec0\u4e48\u539f\u56e0\u5417\uff1f <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : katsusan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    linux \u5185\u6838\u6587\u6863\u5199\u7684\u5f88\u6e05\u695a,RCX \u548c R11 \u4f1a\u5728 x86_64 \u7cfb\u7edf\u8c03\u7528\u65f6\u88ab\u5185\u6838\u4f7f\u7528\u3002<\/p>\n

    ————————————–arch\/x86\/entry.S————————————-
    * 64-bit SYSCALL saves rip to rcx, clears rflags.RF, then saves rflags to r11,
    * then loads new ss, cs, and rip from previously programmed MSRs.
    * rflags gets masked by a value from another MSR (so CLD and CLAC
    * are not needed). SYSCALL does not save anything on the stack
    * and does not change rsp.
    *
    * Registers on entry:
    * rax system call number
    * rcx return address
    * r11 saved rflags (note: r11 is callee-clobbered register in C ABI)
    * rdi arg0
    * rsi arg1
    * rdx arg2
    * r10 arg3 (needs to be moved to rcx to conform to C ABI)
    * r8 arg4
    * r9 arg5
    * (note: r12-r15, rbp, rbx are callee-preserved in C ABI)
    ———————————————————————————————— <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Mohanson <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u7528\u6237\u6a21\u5f0f\u8c03\u7528\u7ea6\u5b9a( calling convention ) \u662f EDI, ESI, EDX, ECX, R8, R9<\/p>\n

    \u5185\u6838\u6a21\u5f0f\u8c03\u7528\u7ea6\u5b9a( \u7cfb\u7edf\u8c03\u7528 ) \u662f rdi\uff0crsi\uff0crdx\uff0cr10\uff0cr8 \u548c r9<\/p>\n

    \u4f60\u7528 c \u5199\u4e2a printf \u7684\u7a0b\u5e8f\u770b\u4e0b\u6c47\u7f16\u5c31\u61c2\u4e86\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chanchancl <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @katsusan @Mohanson \u591a\u8c22\u5404\u4f4d\u7684\u89e3\u7b54\uff0c\u539f\u6765\u8c03\u7528\u666e\u901a\u51fd\u6570\u548c\u7cfb\u7edf\u8c03\u7528\u7684\u4f20\u53c2\u987a\u5e8f\u4e5f\u4e0d\u4e00\u6837 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u5173\u4e8e go \u5728 Linux , a…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/156211"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=156211"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/156211\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=156211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=156211"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=156211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}