KEXEC_ARCH_MIPS_LE                          = 0xa0000
	KEXEC_ARCH_PARISC                           = 0xf0000
	KEXEC_ARCH_PPC                              = 0x140000
	KEXEC_ARCH_PPC64                            = 0x150000
	KEXEC_ARCH_RISCV                            = 0xf30000
	KEXEC_ARCH_S390                             = 0x160000
	KEXEC_ARCH_SH                               = 0x2a0000

	IFF_NOLINKLOCAL               = 0x20000000000
	IFF_NOLOCAL                   = 0x20000
	IFF_NONUD                     = 0x200000
	IFF_NORTEXCH                  = 0x800000
	IFF_NOTRAILERS                = 0x20
	IFF_NOXMIT                    = 0x10000
	IFF_OFFLINE                   = 0x80000000
	IFF_POINTOPOINT               = 0x10
	IFF_PREFERRED                 = 0x400000000
	IFF_PRIVATE                   = 0x8000

		ld.Exitf("unknown -H option: %v", ctxt.HeadType)
	case objabi.Hlinux: /* loong64 elf */
		ld.Elfinit(ctxt)
		ld.HEADR = ld.ELFRESERVE
		if *ld.FlagRound == -1 {
			*ld.FlagRound = 0x10000
		}
		if *ld.FlagTextAddr == -1 {
			*ld.FlagTextAddr = ld.Rnd(0x10000, *ld.FlagRound) + int64(ld.HEADR)
		}
	}

	O_NOCTTY                         = 0x100
	O_NOFOLLOW                       = 0x20000
	O_NONBLOCK                       = 0x800
	O_PATH                           = 0x200000
	O_RSYNC                          = 0x101000
	O_SYNC                           = 0x101000
	O_TMPFILE                        = 0x410000
	O_TRUNC                          = 0x200
	PARENB                           = 0x100

	O_NOCTTY                         = 0x100
	O_NOFOLLOW                       = 0x20000
	O_NONBLOCK                       = 0x800
	O_PATH                           = 0x200000
	O_RSYNC                          = 0x101000
	O_SYNC                           = 0x101000
	O_TMPFILE                        = 0x410000
	O_TRUNC                          = 0x200
	PARENB                           = 0x100

	MAP_EXECUTABLE                   = 0x1000
	MAP_GROWSDOWN                    = 0x100
	MAP_HUGETLB                      = 0x40000
	MAP_LOCKED                       = 0x2000
	MAP_NONBLOCK                     = 0x10000
	MAP_NORESERVE                    = 0x4000
	MAP_POPULATE                     = 0x8000
	MAP_STACK                        = 0x20000
	MAP_SYNC                         = 0x80000
	MCL_CURRENT                      = 0x1

	PERF_SAMPLE_BRANCH_IND_JUMP           = 0x1000
	PERF_SAMPLE_BRANCH_CALL               = 0x2000
	PERF_SAMPLE_BRANCH_NO_FLAGS           = 0x4000
	PERF_SAMPLE_BRANCH_NO_CYCLES          = 0x8000
	PERF_SAMPLE_BRANCH_TYPE_SAVE          = 0x10000
	PERF_SAMPLE_BRANCH_HW_INDEX           = 0x20000
	PERF_SAMPLE_BRANCH_PRIV_SAVE          = 0x40000
	PERF_SAMPLE_BRANCH_MAX                = 0x100000
	PERF_BR_UNKNOWN                       = 0x0

	STANDARD_RIGHTS_REQUIRED = 0x000F0000
	STANDARD_RIGHTS_READ     = READ_CONTROL
	STANDARD_RIGHTS_WRITE    = READ_CONTROL
	STANDARD_RIGHTS_EXECUTE  = READ_CONTROL
	STANDARD_RIGHTS_ALL      = 0x001F0000
	SPECIFIC_RIGHTS_ALL      = 0x0000FFFF
	ACCESS_SYSTEM_SECURITY   = 0x01000000
	MAXIMUM_ALLOWED          = 0x02000000
	GENERIC_READ             = 0x80000000
	GENERIC_WRITE            = 0x40000000

	mb := s
	r := 64 - s
	// A larger mb is a smaller mask.
	if (encoded>>8)&0xFF < mb {
		encoded = (encoded &^ 0xFF00) | mb<<8
	}
	// The rotate is expected to be 0.
	if (encoded & 0xFF0000) != 0 {
		panic("non-zero rotate")
	}
	return encoded | r<<16
}

// DecodePPC64RotateMask is the inverse operation of encodePPC64RotateMask.  The values returned as