MOVW	R1, ret+4(FP)
	RET

TEXT ·Load8(SB),NOSPLIT,$0-5
	MOVW	ptr+0(FP), R1
	SYNC
	MOVB	0(R1), R1
	SYNC
	MOVB	R1, ret+4(FP)
	RET

// uint32 Xadd(uint32 volatile *val, int32 delta)
// Atomically:
//	*val += delta;
//	return *val;
TEXT ·Xadd(SB),NOSPLIT,$0-12
	MOVW	ptr+0(FP), R2
	MOVW	delta+4(FP), R3
	SYNC
try_xadd:
	LL	(R2), R1	// R1 = *R2
	ADDU	R1, R3, R4
	MOVW	R4, R1
	SC	R4, (R2)	// *R2 = R4

}

func addrLock(addr *uint64) *spinlock {
	return &locktab[(uintptr(unsafe.Pointer(addr))>>3)%uintptr(len(locktab))].l
}

// Atomic add and return new value.
//
//go:nosplit
func Xadd(val *uint32, delta int32) uint32 {
	for {
		oval := *val
		nval := oval + uint32(delta)
		if Cas(val, oval, nval) {
			return nval
		}
	}
}

//go:noescape

//
//go:linkname Load
//go:linkname Loadp
//go:linkname Load64
//go:linkname Loadint32
//go:linkname Loadint64
//go:linkname Loaduintptr
//go:linkname LoadAcquintptr
//go:linkname Xadd
//go:linkname Xaddint32
//go:linkname Xaddint64
//go:linkname Xadd64
//go:linkname Xadduintptr
//go:linkname Xchg
//go:linkname Xchg64
//go:linkname Xchgint32
//go:linkname Xchgint64
//go:linkname Xchguintptr

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

//go:build mips64 || mips64le

package atomic

import "unsafe"

//go:noescape
func Xadd(ptr *uint32, delta int32) uint32

//go:noescape
func Xadd64(ptr *uint64, delta int64) uint64

//go:noescape
func Xadduintptr(ptr *uintptr, delta uintptr) uintptr

//go:noescape

	JMP	·Load64(SB)

TEXT ·Xaddint32(SB), NOSPLIT, $0-20
	JMP	·Xadd(SB)

TEXT ·Xaddint64(SB), NOSPLIT, $0-24
	JMP	·Xadd64(SB)

// bool casp(void **val, void *old, void *new)
// Atomically:
//	if(*val == old){
//		*val = new;
//		return 1;
//	} else
//		return 0;
TEXT ·Casp1(SB), NOSPLIT, $0-25
	JMP ·Cas64(SB)

// uint32 xadd(uint32 volatile *ptr, int32 delta)
// Atomically:
//	*val += delta;

func LoadAcquintptr(ptr *uintptr) uintptr {
	return *ptr
}

//go:noescape
func Xadd64(ptr *uint64, delta int64) uint64

//go:noescape
func Xadduintptr(ptr *uintptr, delta uintptr) uintptr

//go:noescape
func Xadd(ptr *uint32, delta int32) uint32

//go:noescape
func Xchg64(ptr *uint64, new uint64) uint64

//go:noescape
func Xchg(ptr *uint32, new uint32) uint32

//go:noescape

		}
	}
}

//go:nosplit
func And64(addr *uint64, val uint64) (old uint64) {
	for {
		old = *addr
		if Cas64(addr, old, old&val) {
			return old
		}
	}
}

//go:noescape
func Xadd(ptr *uint32, delta int32) uint32

//go:noescape
func Xadduintptr(ptr *uintptr, delta uintptr) uintptr

//go:noescape
func Xchg(ptr *uint32, new uint32) uint32

//go:noescape

			// pass through to the external linker.
			rr.Xadd = 0
			if target.IsElf() {
				rr.Xadd -= int64(siz)
			}
			rr.Xsym = rs
			break
		}
		if rs != 0 && (ldr.SymSect(rs) != ldr.SymSect(s) || rt == objabi.R_GOTPCREL) {
			// set up addend for eventual relocation via outer symbol.
			rs := rs
			rs, off := FoldSubSymbolOffset(ldr, rs)
			rr.Xadd = r.Add() + off

func semrelease(addr *uint32) {
	semrelease1(addr, false, 0)
}

func semrelease1(addr *uint32, handoff bool, skipframes int) {
	root := semtable.rootFor(addr)
	atomic.Xadd(addr, 1)

	// Easy case: no waiters?
	// This check must happen after the xadd, to avoid a missed wakeup
	// (see loop in semacquire).
	if root.nwait.Load() == 0 {
		return
	}

	// Harder case: search for a waiter and wake it.

		// Flush the write barrier buffer, since this may add
		// work to the gcWork.
		wbBufFlush1(pp)

		// Flush the gcWork, since this may create global work
		// and set the flushedWork flag.
		//
		// TODO(austin): Break up these workbufs to
		// better distribute work.
		pp.gcw.dispose()
		// Collect the flushedWork flag.
		if pp.gcw.flushedWork {
			atomic.Xadd(&gcMarkDoneFlushed, 1)
			pp.gcw.flushedWork = false