10Sstevel@tonic-gate/* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7298SMark.J.Nelson@Sun.COM * Common Development and Distribution License (the "License"). 6*7298SMark.J.Nelson@Sun.COM * You may not use this file except in compliance with the License. 70Sstevel@tonic-gate * 80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 100Sstevel@tonic-gate * See the License for the specific language governing permissions 110Sstevel@tonic-gate * and limitations under the License. 120Sstevel@tonic-gate * 130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 180Sstevel@tonic-gate * 190Sstevel@tonic-gate * CDDL HEADER END 200Sstevel@tonic-gate */ 210Sstevel@tonic-gate/* 220Sstevel@tonic-gate * Copyright (c) 1995-1997, by Sun Microsystems, Inc. 230Sstevel@tonic-gate * All rights reserved. 240Sstevel@tonic-gate */ 250Sstevel@tonic-gate 26*7298SMark.J.Nelson@Sun.COM .file "sync_instruction_memory.s" 270Sstevel@tonic-gate 280Sstevel@tonic-gate#include <sys/asm_linkage.h> 290Sstevel@tonic-gate 300Sstevel@tonic-gate/* 310Sstevel@tonic-gate * void sync_instruction_memory(caddr_t addr, int len) 320Sstevel@tonic-gate * 330Sstevel@tonic-gate * Make the memory at {addr, addr+len} valid for instruction execution. 340Sstevel@tonic-gate */ 350Sstevel@tonic-gate 360Sstevel@tonic-gate#ifdef lint 370Sstevel@tonic-gate#define nop 380Sstevel@tonic-gatevoid 390Sstevel@tonic-gatesync_instruction_memory(caddr_t addr, int len) 400Sstevel@tonic-gate{ 410Sstevel@tonic-gate caddr_t end = addr + len; 420Sstevel@tonic-gate caddr_t start = addr & ~7; 430Sstevel@tonic-gate for (; start < end; start += 8) 440Sstevel@tonic-gate flush(start); 450Sstevel@tonic-gate nop; nop; nop; nop; nop; 460Sstevel@tonic-gate return; 470Sstevel@tonic-gate} 480Sstevel@tonic-gate#else 490Sstevel@tonic-gate ENTRY(sync_instruction_memory) 500Sstevel@tonic-gate add %o0, %o1, %o2 510Sstevel@tonic-gate andn %o0, 7, %o0 520Sstevel@tonic-gate 530Sstevel@tonic-gate cmp %o0, %o2 540Sstevel@tonic-gate bgeu 2f 550Sstevel@tonic-gate nop 560Sstevel@tonic-gate flush %o0 570Sstevel@tonic-gate1: 580Sstevel@tonic-gate add %o0, 8, %o0 590Sstevel@tonic-gate cmp %o0, %o2 600Sstevel@tonic-gate blu,a 1b 610Sstevel@tonic-gate flush %o0 620Sstevel@tonic-gate ! 630Sstevel@tonic-gate ! when we get here, we have executed 3 instructions after the 640Sstevel@tonic-gate ! last flush; SPARC V8 requires 2 more for flush to be visible 650Sstevel@tonic-gate ! The retl;nop pair will do it. 660Sstevel@tonic-gate ! 670Sstevel@tonic-gate2: 680Sstevel@tonic-gate retl 690Sstevel@tonic-gate clr %o0 700Sstevel@tonic-gate SET_SIZE(sync_instruction_memory) 710Sstevel@tonic-gate 720Sstevel@tonic-gate ENTRY(nop) 730Sstevel@tonic-gate retl 740Sstevel@tonic-gate nop 750Sstevel@tonic-gate SET_SIZE(nop) 760Sstevel@tonic-gate#endif 77