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    close(fd);
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    close(fd);
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    return rc;
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    return rc;
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}
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}
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/** Run an ELF executable.
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 *
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 * Transfers control to the entry point of an ELF executable loaded
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 * earlier with elf_load_file(). This function does not return.
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 *
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 * @param info  Info structure filled earlier by elf_load_file()
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 */
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void elf_run(elf_info_t *info, pcb_t *pcb)
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{
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    program_run(info->entry, pcb);
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    /* not reached */
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}
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/** Create the program control block (PCB).
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/** Create the program control block (PCB).
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 *
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 *
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 * Fills the program control block @a pcb with information from
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 * Fills the program control block @a pcb with information from
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 * @a info.
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 * @a info.
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 *
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 *
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        break;
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        break;
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    case PT_LOAD:
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    case PT_LOAD:
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        return load_segment(elf, entry);
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        return load_segment(elf, entry);
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        break;
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        break;
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    case PT_INTERP:
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    case PT_INTERP:
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        /* Assume silently interp == "/lib/rtld" */
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        /* Assume silently interp == "/app/dload" */
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        elf->info->interp = "/lib/rtld";
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        elf->info->interp = "/app/dload";
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        break;
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        break;
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    case PT_DYNAMIC:
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    case PT_DYNAMIC:
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    case PT_SHLIB:
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    case PT_SHLIB:
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    case PT_NOTE:
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    case PT_NOTE:
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    case PT_LOPROC:
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    case PT_LOPROC: