// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
// SPDX-License-Identifier: BSD-3-Clause

// Differential kernel for the riscv64 atomics: the RV64A AMO family and the
// load-reserved / store-conditional pair, in the toolchain's spelling
// (value, (address), result).  Both orderings sit in the encodings: the
// table gives every AMO aq and rl, LR acquire and SC release.

#include "textflag.h"

TEXT ·amo(SB), NOSPLIT, $0-0
	AMOSWAPW X5, (X6), X7
	AMOSWAPD X5, (X6), X7
	AMOADDW  X5, (X6), X7
	AMOADDD  X5, (X6), X7
	AMOANDW  X5, (X6), X7
	AMOANDD  X5, (X6), X7
	AMOORW   X5, (X6), X7
	AMOORD   X5, (X6), X7
	AMOXORW  X5, (X6), X7
	AMOXORD  X5, (X6), X7
	AMOMAXW  X5, (X6), X7
	AMOMAXD  X5, (X6), X7
	AMOMAXUW X5, (X6), X7
	AMOMAXUD X5, (X6), X7
	AMOMINUW X5, (X6), X7
	AMOMINUD X5, (X6), X7
	RET

TEXT ·lrsc(SB), NOSPLIT, $0-0
	LRW (X5), X6
	LRD (X5), X6
	SCW X5, (X6), X7
	SCD X5, (X6), X7
	RET