# consult https://www.iana.org/time-zones for the latest versions,
# update CODE and DATA below, and then run
#
#	./update.bash -commit
#
# That will prepare the files and create the commit.
#
# To review such a commit (as the reviewer), use:
#
#	git codereview change NNNNNN   # CL number
#	cd lib/time
#	./update.bash
#
# If it prints "No updates needed.", then the generated files
# in the CL match the update.bash in the CL.

# That tree can be copied to a machine of the given target type
# and used as $GOROOT_BOOTSTRAP to bootstrap a local build.
#
# Only changes that have been committed to Git (at least locally,
# not necessary reviewed and submitted to master) are included in the tree.
#
# See also golang.org/x/build/cmd/genbootstrap, which is used
# to generate bootstrap tgz files for builders.

set -e

if [ "$GOOS" = "" -o "$GOARCH" = "" ]; then

	// If the first bit is set, then all following bits constitute a two's
	// complement encoded number in big-endian byte order.
	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.

	RBITW R9, R22                              // 3601c05a
	RBIT R11, R4                               // 6401c0da
	RET                                        // c0035fd6
	REVW R8, R10                               // 0a09c05a
	REV R1, R2                                 // 220cc0da
	REV16W R21, R19                            // b306c05a
	REV16 R25, R4                              // 2407c0da
	REV32 R27, R21                             // 750bc0da

		if err != nil {
			fatalf("reading DWARF entry: %s", err)
		}
		if e == nil {
			break
		}
		switch e.Tag {
		case dwarf.TagVariable:
			name, _ := e.Val(dwarf.AttrName).(string)
			// As of https://reviews.llvm.org/D123534, clang
			// now emits DW_TAG_variable DIEs that have
			// no name (so as to be able to describe the
			// type and source locations of constant strings)
			// like the second arg in the call below:

	MRS	PMXEVCNTR_EL0, R26                 // 5a9d3bd5
	MSR	R10, PMXEVCNTR_EL0                 // 4a9d1bd5
	MRS	PMXEVTYPER_EL0, R4                 // 249d3bd5
	MSR	R4, PMXEVTYPER_EL0                 // 249d1bd5
	MRS	REVIDR_EL1, R29                    // dd0038d5
	MRS	RMR_EL1, R4                        // 44c038d5
	MSR	R0, RMR_EL1                        // 40c018d5
	MRS	RVBAR_EL1, R7                      // 27c038d5

	MSR	R6, PMMIR_EL1                                    // ERROR "system register is not writable"
	MSR	R6, PMSIDR_EL1                                   // ERROR "system register is not writable"
	MSR	R6, REVIDR_EL1                                   // ERROR "system register is not writable"
	MSR	R6, RNDR                                         // ERROR "system register is not writable"