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{
    "unit": "https://translate-dev.freebsd.org/api/units/229434/?format=api",
    "component": "https://translate-dev.freebsd.org/api/components/freebsd-doc/boooks_arch-handbook/?format=api",
    "translation": "https://translate-dev.freebsd.org/api/translations/freebsd-doc/boooks_arch-handbook/pt_BR/?format=api",
    "user": null,
    "author": null,
    "timestamp": "2021-01-09T14:37:30.629543Z",
    "action": 30,
    "target": "As <filename>boot0</filename> is loaded by the <acronym>BIOS</acronym> to address <literal>0x7C00</literal>, it copies itself to address <literal>0x600</literal> and then transfers control there (recall that it was linked to execute at address <literal>0x600</literal>). The source address, <literal>0x7c00</literal>, is copied to register <literal>%si</literal>. The destination address, <literal>0x600</literal>, to register <literal>%di</literal>. The number of bytes to copy, <literal>512</literal> (the program's size), is copied to register <literal>%cx</literal>. Next, the <literal>rep</literal> instruction repeats the instruction that follows, that is, <literal>movsb</literal>, the number of times dictated by the <literal>%cx</literal> register. The <literal>movsb</literal> instruction copies the byte pointed to by <literal>%si</literal> to the address pointed to by <literal>%di</literal>. This is repeated another 511 times. On each repetition, both the source and destination registers, <literal>%si</literal> and <literal>%di</literal>, are incremented by one. Thus, upon completion of the 512-byte copy, <literal>%di</literal> has the value <literal>0x600</literal>+<literal>512</literal>= <literal>0x800</literal>, and <literal>%si</literal> has the value <literal>0x7c00</literal>+<literal>512</literal>= <literal>0x7e00</literal>; we have thus completed the code <emphasis>relocation</emphasis>.",
    "id": 106184,
    "action_name": "改变了源字符串",
    "url": "https://translate-dev.freebsd.org/api/changes/106184/?format=api"
}