globalThis.process = {
			getuid() { return -1; },
			getgid() { return -1; },
			geteuid() { return -1; },
			getegid() { return -1; },
			getgroups() { throw enosys(); },
			pid: -1,
			ppid: -1,
			umask() { throw enosys(); },
			cwd() { throw enosys(); },
			chdir() { throw enosys(); },
		}
	}

	if (!globalThis.crypto) {

pkg syscall (darwin-arm64), const SYS_TRUNCATE = 200
pkg syscall (darwin-arm64), const SYS_TRUNCATE ideal-int
pkg syscall (darwin-arm64), const SYS_UMASK = 60
pkg syscall (darwin-arm64), const SYS_UMASK ideal-int
pkg syscall (darwin-arm64), const SYS_UMASK_EXTENDED = 278
pkg syscall (darwin-arm64), const SYS_UMASK_EXTENDED ideal-int
pkg syscall (darwin-arm64), const SYS_UNDELETE = 205
pkg syscall (darwin-arm64), const SYS_UNDELETE ideal-int

Four * 100   // product 400 cannot be represented as an int8 (type of Four)
</pre>

<p>
The mask used by the unary bitwise complement operator <code>^</code> matches
the rule for non-constants: the mask is all 1s for unsigned constants
and -1 for signed and untyped constants.
</p>

<pre>
^1         // untyped integer constant, equal to -2

pkg syscall (freebsd-arm64), const BPF_T_FAST ideal-int
pkg syscall (freebsd-arm64), const BPF_T_FLAG_MASK = 768
pkg syscall (freebsd-arm64), const BPF_T_FLAG_MASK ideal-int
pkg syscall (freebsd-arm64), const BPF_T_FORMAT_MASK = 3
pkg syscall (freebsd-arm64), const BPF_T_FORMAT_MASK ideal-int
pkg syscall (freebsd-arm64), const BPF_T_MICROTIME = 0
pkg syscall (freebsd-arm64), const BPF_T_MICROTIME ideal-int

pkg syscall (freebsd-riscv64), const BPF_T_FAST ideal-int #53466
pkg syscall (freebsd-riscv64), const BPF_T_FLAG_MASK = 768 #53466
pkg syscall (freebsd-riscv64), const BPF_T_FLAG_MASK ideal-int #53466
pkg syscall (freebsd-riscv64), const BPF_T_FORMAT_MASK = 3 #53466
pkg syscall (freebsd-riscv64), const BPF_T_FORMAT_MASK ideal-int #53466
pkg syscall (freebsd-riscv64), const BPF_T_MICROTIME = 0 #53466

	if len(b) > 0 && b[0]&0x80 != 0 {
		// Handling negative numbers relies on the following identity:
		//	-a-1 == ^a
		//
		// If the number is negative, we use an inversion mask to invert the
		// data bytes and treat the value as an unsigned number.
		var inv byte // 0x00 if positive or zero, 0xff if negative
		if b[0]&0x40 != 0 {
			inv = 0xff
		}

		var x uint64

and declares <code>runtime·tlsoffset</code>, a 4-byte, implicitly zeroed variable that
contains no pointers.
</p>

<p>
There may be one or two arguments to the directives.
If there are two, the first is a bit mask of flags,
which can be written as numeric expressions, added or or-ed together,
or can be set symbolically for easier absorption by a human.

	// AVX2GATHER mask/index/dest #UD cases.
	VPGATHERQQ Y2, (BP)(X2*2), Y2   // ERROR "mask, index, and destination registers should be distinct"
	VPGATHERQQ Y2, (BP)(X2*2), Y7   // ERROR "mask, index, and destination registers should be distinct"
	VPGATHERQQ Y2, (BP)(X7*2), Y2   // ERROR "mask, index, and destination registers should be distinct"

Four * 100   // product 400 cannot be represented as an int8 (type of Four)
</pre>

<p>
The mask used by the unary bitwise complement operator <code>^</code> matches
the rule for non-constants: the mask is all 1s for unsigned constants
and -1 for signed and untyped constants.
</p>

<pre>
^1         // untyped integer constant, equal to -2

pkg syscall (openbsd-386), const BIOCGRTIMEOUT = 1074283118
pkg syscall (openbsd-386), const BIOCSRTIMEOUT = 2148024941
pkg syscall (openbsd-386), const ImplementsGetwd = false
pkg syscall (openbsd-386), const RTF_FMASK = 63496
pkg syscall (openbsd-386), const RTM_VERSION = 4
pkg syscall (openbsd-386), const SIOCBRDGDADDR = 2150132039
pkg syscall (openbsd-386), const SIOCBRDGGPARAM = 3224922456