var vdsoLinuxVersion = vdsoVersionKey{"LINUX_2.6", 0x3ae75f6}

// The symbol name is not __kernel_clock_gettime as suggested by the manpage;
// according to Linux source code it should be __vdso_clock_gettime instead.
var vdsoSymbolKeys = []vdsoSymbolKey{
	{"__vdso_clock_gettime", 0xd35ec75, 0x6e43a318, &vdsoClockgettimeSym},
}

// initialize to fall back to syscall
var (
	vdsoClockgettimeSym uintptr = 0

	// be constrained to max +ve int.
	vdsoArrayMax = 1<<31 - 1
)

var vdsoLinuxVersion = vdsoVersionKey{"LINUX_2.6", 0x3ae75f6}

var vdsoSymbolKeys = []vdsoSymbolKey{
	{"__vdso_clock_gettime", 0xd35ec75, 0x6e43a318, &vdsoClockgettimeSym},
}

// initialize to fall back to syscall

	vdsoArrayMax = 1<<50 - 1
)

// key and version at man 7 vdso : riscv
var vdsoLinuxVersion = vdsoVersionKey{"LINUX_4.15", 0xae77f75}

var vdsoSymbolKeys = []vdsoSymbolKey{
	{"__vdso_clock_gettime", 0xd35ec75, 0x6e43a318, &vdsoClockgettimeSym},
}

// initialize to fall back to syscall

	// be constrained to max +ve int.
	vdsoArrayMax = 1<<31 - 1
)

var vdsoLinuxVersion = vdsoVersionKey{"LINUX_2.6", 0x3ae75f6}

var vdsoSymbolKeys = []vdsoSymbolKey{
	{"__vdso_clock_gettime", 0xd35ec75, 0x6e43a318, &vdsoClockgettimeSym},
}

// initialize to fall back to syscall

	vdsoArrayMax = 1<<50 - 1
)

var vdsoLinuxVersion = vdsoVersionKey{"LINUX_2.6", 0x3ae75f6}

var vdsoSymbolKeys = []vdsoSymbolKey{
	{"__vdso_gettimeofday", 0x315ca59, 0xb01bca00, &vdsoGettimeofdaySym},
	{"__vdso_clock_gettime", 0xd35ec75, 0x6e43a318, &vdsoClockgettimeSym},
}

var (
	vdsoGettimeofdaySym uintptr
	vdsoClockgettimeSym uintptr
)

// vdsoGettimeofdaySym is accessed from the syscall package.

// appear
// when that happens, see man 7 vdso : loongarch
var vdsoLinuxVersion = vdsoVersionKey{"LINUX_5.10", 0xae78f70}

var vdsoSymbolKeys = []vdsoSymbolKey{
	{"__vdso_clock_gettime", 0xd35ec75, 0x6e43a318, &vdsoClockgettimeSym},
}

// initialize to fall back to syscall
var (
	vdsoClockgettimeSym uintptr = 0