end := start
			for environBuf[end] != 0 {
				end++
			}
			envs[i] = string(environBuf[start:end])
		}
	}
}

func walltime() (sec int64, nsec int32) {
	return walltime1()
}

func walltime1() (sec int64, nsec int32) {
	var time timestamp
	if clock_time_get(clockRealtime, 0, unsafe.Pointer(&time)) != 0 {
		throw("clock_time_get failed")
	}

// license that can be found in the LICENSE file.

//go:build !aix && !darwin && !freebsd && !openbsd && !solaris && !wasip1 && !windows && !(linux && amd64)

package runtime

//go:wasmimport gojs runtime.walltime

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Declarations for operating systems implementing time.now
// indirectly, in terms of walltime and nanotime assembly.

//go:build !faketime && !windows && !(linux && amd64)

package runtime

import _ "unsafe" // for go:linkname

// time_now should be an internal detail,

func munmap(addr unsafe.Pointer, n uintptr)

func nanotime1() int64

//go:noescape
func sigaltstack(new, old *stackt)

func fcntl(fd, cmd, arg int32) (ret int32, errno int32)

func walltime() (sec int64, nsec int32)

func nanotime1() int64 {
	bt := vdsoClockGettime(_CLOCK_MONOTONIC)
	if bt == zeroBintime {
		return fallback_nanotime()
	}
	return int64((1e9 * uint64(bt.sec)) + ((1e9 * uint64(bt.frac>>32)) >> 32))
}

func walltime() (sec int64, nsec int32) {
	bt := vdsoClockGettime(_CLOCK_REALTIME)
	if bt == zeroBintime {
		return fallback_walltime()
	}
	return int64(bt.sec), int32((1e9 * uint64(bt.frac>>32)) >> 32)

TEXT runtime·plan9_tsemacquire(SB),NOSPLIT,$0
	MOVQ	$52, BP
	SYSCALL
	MOVL	AX, ret+16(FP)
	RET

TEXT runtime·nsec(SB),NOSPLIT,$0
	MOVQ	$53, BP
	SYSCALL
	MOVQ	AX, ret+8(FP)
	RET

// func walltime() (sec int64, nsec int32)
TEXT runtime·walltime(SB),NOSPLIT,$8-12
	CALL	runtime·nanotime1(SB)
	MOVQ	0(SP), AX

	// generated code for
	//	func f(x uint64) (uint64, uint64) { return x/1000000000, x%1000000000 }

	INT	$64
	RET

TEXT runtime·nsec(SB),NOSPLIT,$8
	LEAL	ret+4(FP), AX
	MOVL	AX, 0(SP)
	CALL	nsec<>(SB)
	CMPL	AX, $0
	JGE	3(PC)
	MOVL	$-1, ret_lo+4(FP)
	MOVL	$-1, ret_hi+8(FP)
	RET

// func walltime() (sec int64, nsec int32)
TEXT runtime·walltime(SB),NOSPLIT,$8-12
	CALL	runtime·nanotime1(SB)
	MOVL	0(SP), AX
	MOVL	4(SP), DX

	MOVL	$1000000000, CX
	DIVL	CX
	MOVL	AX, sec_lo+0(FP)

		systemstack(func() {
			println("runtime: errno", -errno)
			throw("clock_gettime failed")
		})
	}
	return ts.tv_sec*1e9 + int64(ts.tv_nsec)
}
func clock_gettime_trampoline()

//go:nosplit
func walltime() (int64, int32) {
	var ts timespec
	args := struct {
		clock_id int32
		tp       unsafe.Pointer
	}{_CLOCK_REALTIME, unsafe.Pointer(&ts)}

TEXT runtime·nsec(SB),NOSPLIT|NOFRAME,$0-12
	MOVW	$SYS_NSEC, R0
	SWI	$0
	MOVW	arg+0(FP), R1
	MOVW	0(R1), R0
	MOVW	R0, ret_lo+4(FP)
	MOVW	4(R1), R0
	MOVW	R0, ret_hi+8(FP)
	RET

// func walltime() (sec int64, nsec int32)
TEXT runtime·walltime(SB),NOSPLIT,$12-12
	// use nsec system call to get current time in nanoseconds
	MOVW	$sysnsec_lo-8(SP), R0	// destination addr
	MOVW	R0,res-12(SP)
	MOVW	$SYS_NSEC, R0

//go:nosplit
func nanotime1() int64 {
	tp := &timespec{}
	if clock_gettime(_CLOCK_REALTIME, tp) != 0 {
		throw("syscall clock_gettime failed")
	}
	return tp.tv_sec*1000000000 + tp.tv_nsec
}

func walltime() (sec int64, nsec int32) {
	ts := &timespec{}
	if clock_gettime(_CLOCK_REALTIME, ts) != 0 {
		throw("syscall clock_gettime failed")
	}
	return ts.tv_sec, int32(ts.tv_nsec)
}

//go:nosplit