1*5d9d9091SRichard Lowe/* 2*5d9d9091SRichard Lowe * CDDL HEADER START 3*5d9d9091SRichard Lowe * 4*5d9d9091SRichard Lowe * The contents of this file are subject to the terms of the 5*5d9d9091SRichard Lowe * Common Development and Distribution License (the "License"). 6*5d9d9091SRichard Lowe * You may not use this file except in compliance with the License. 7*5d9d9091SRichard Lowe * 8*5d9d9091SRichard Lowe * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*5d9d9091SRichard Lowe * or http://www.opensolaris.org/os/licensing. 10*5d9d9091SRichard Lowe * See the License for the specific language governing permissions 11*5d9d9091SRichard Lowe * and limitations under the License. 12*5d9d9091SRichard Lowe * 13*5d9d9091SRichard Lowe * When distributing Covered Code, include this CDDL HEADER in each 14*5d9d9091SRichard Lowe * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*5d9d9091SRichard Lowe * If applicable, add the following below this CDDL HEADER, with the 16*5d9d9091SRichard Lowe * fields enclosed by brackets "[]" replaced with your own identifying 17*5d9d9091SRichard Lowe * information: Portions Copyright [yyyy] [name of copyright owner] 18*5d9d9091SRichard Lowe * 19*5d9d9091SRichard Lowe * CDDL HEADER END 20*5d9d9091SRichard Lowe */ 21*5d9d9091SRichard Lowe/* 22*5d9d9091SRichard Lowe * Copyright (c) 1995-1997, by Sun Microsystems, Inc. 23*5d9d9091SRichard Lowe * All rights reserved. 24*5d9d9091SRichard Lowe */ 25*5d9d9091SRichard Lowe 26*5d9d9091SRichard Lowe .file "sync_instruction_memory.s" 27*5d9d9091SRichard Lowe 28*5d9d9091SRichard Lowe#include <sys/asm_linkage.h> 29*5d9d9091SRichard Lowe 30*5d9d9091SRichard Lowe/* 31*5d9d9091SRichard Lowe * void sync_instruction_memory(caddr_t addr, int len) 32*5d9d9091SRichard Lowe * 33*5d9d9091SRichard Lowe * Make the memory at {addr, addr+len} valid for instruction execution. 34*5d9d9091SRichard Lowe */ 35*5d9d9091SRichard Lowe 36*5d9d9091SRichard Lowe#ifdef lint 37*5d9d9091SRichard Lowe#define nop 38*5d9d9091SRichard Lowevoid 39*5d9d9091SRichard Lowesync_instruction_memory(caddr_t addr, int len) 40*5d9d9091SRichard Lowe{ 41*5d9d9091SRichard Lowe caddr_t end = addr + len; 42*5d9d9091SRichard Lowe caddr_t start = addr & ~7; 43*5d9d9091SRichard Lowe for (; start < end; start += 8) 44*5d9d9091SRichard Lowe flush(start); 45*5d9d9091SRichard Lowe nop; nop; nop; nop; nop; 46*5d9d9091SRichard Lowe return; 47*5d9d9091SRichard Lowe} 48*5d9d9091SRichard Lowe#else 49*5d9d9091SRichard Lowe ENTRY(sync_instruction_memory) 50*5d9d9091SRichard Lowe add %o0, %o1, %o2 51*5d9d9091SRichard Lowe andn %o0, 7, %o0 52*5d9d9091SRichard Lowe 53*5d9d9091SRichard Lowe cmp %o0, %o2 54*5d9d9091SRichard Lowe bgeu 2f 55*5d9d9091SRichard Lowe nop 56*5d9d9091SRichard Lowe flush %o0 57*5d9d9091SRichard Lowe1: 58*5d9d9091SRichard Lowe add %o0, 8, %o0 59*5d9d9091SRichard Lowe cmp %o0, %o2 60*5d9d9091SRichard Lowe blu,a 1b 61*5d9d9091SRichard Lowe flush %o0 62*5d9d9091SRichard Lowe ! 63*5d9d9091SRichard Lowe ! when we get here, we have executed 3 instructions after the 64*5d9d9091SRichard Lowe ! last flush; SPARC V8 requires 2 more for flush to be visible 65*5d9d9091SRichard Lowe ! The retl;nop pair will do it. 66*5d9d9091SRichard Lowe ! 67*5d9d9091SRichard Lowe2: 68*5d9d9091SRichard Lowe retl 69*5d9d9091SRichard Lowe clr %o0 70*5d9d9091SRichard Lowe SET_SIZE(sync_instruction_memory) 71*5d9d9091SRichard Lowe 72*5d9d9091SRichard Lowe ENTRY(nop) 73*5d9d9091SRichard Lowe retl 74*5d9d9091SRichard Lowe nop 75*5d9d9091SRichard Lowe SET_SIZE(nop) 76*5d9d9091SRichard Lowe#endif 77