How to get Xcode 9 Beta without a paid developer account…

http://adcdownload.apple.com/WWDC_2017/Xcode_9_beta/Xcode_9_beta.xip

Thanks to Apple 🙂

Why do we need it? Look here:

typedef struct boot_args {
    uint16_t    Revision;	/* Revision of boot_args structure */
    uint16_t    Version;	/* Version of boot_args structure */

    uint8_t     efiMode;    /* 32 = 32-bit, 64 = 64-bit */
    uint8_t     debugMode;  /* Bit field with behavior changes */
    uint16_t    flags;

    char        CommandLine[BOOT_LINE_LENGTH];	/* Passed in command line */

    uint32_t    MemoryMap;  /* Physical address of memory map */
    uint32_t    MemoryMapSize;
    uint32_t    MemoryMapDescriptorSize;
    uint32_t    MemoryMapDescriptorVersion;

    Boot_VideoV1 VideoV1;	/* Video Information */

    uint32_t    deviceTreeP;	  /* Physical address of flattened device tree */
    uint32_t    deviceTreeLength; /* Length of flattened tree */

    uint32_t    kaddr;            /* Physical address of beginning of kernel text */
    uint32_t    ksize;            /* Size of combined kernel text+data+efi */

    uint32_t    efiRuntimeServicesPageStart; /* physical address of defragmented runtime pages */
    uint32_t    efiRuntimeServicesPageCount;
    uint64_t    efiRuntimeServicesVirtualPageStart; /* virtual address of defragmented runtime pages */

    uint32_t    efiSystemTable;   /* physical address of system table in runtime area */
    uint32_t    kslide;

    uint32_t    performanceDataStart; /* physical address of log */
    uint32_t    performanceDataSize;

    uint32_t    keyStoreDataStart; /* physical address of key store data */
    uint32_t    keyStoreDataSize;
    uint64_t	bootMemStart;
    uint64_t	bootMemSize;
    uint64_t    PhysicalMemorySize;
    uint64_t    FSBFrequency;
    uint64_t    pciConfigSpaceBaseAddress;
    uint32_t    pciConfigSpaceStartBusNumber;
    uint32_t    pciConfigSpaceEndBusNumber;
    uint32_t	csrActiveConfig;
    uint32_t	csrCapabilities;
    uint32_t    boot_SMC_plimit;
    uint16_t    bootProgressMeterStart;
    uint16_t    bootProgressMeterEnd;
    Boot_Video	Video;		/* Video Information */

    uint32_t    apfsDataStart; /* Physical address of apfs volume key structure */
    uint32_t    apfsDataSize;

    uint32_t    __reserved4[710];

} boot_args;

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