1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27#pragma ident "%Z%%M% %I% %E% SMI" 28 29/ 30/ Inline functions for the x64 kernel running on the hypervisor 31/ 32 33 .inline __hypercall0, 0 34 movq %rdi, %rax 35 syscall 36 .end 37 38 .inline __hypercall1, 0 39 movq %rdi, %rax 40 movq %rsi, %rdi / arg 1 41 syscall 42 .end 43 44 .inline __hypercall2, 0 45 movq %rdi, %rax 46 movq %rsi, %rdi / arg 1 47 movq %rdx, %rsi / arg 2 48 syscall 49 .end 50 51 .inline __hypercall3, 0 52 movq %rdi, %rax 53 movq %rsi, %rdi / arg 1 54 movq %rdx, %rsi / arg 2 55 movq %rcx, %rdx / arg 3 56 syscall 57 .end 58 59/* XXPV studio bug r10 is changed to eax by compiler */ 60 .inline __hypercall4_broken, 0 61 movq %rdi, %rax 62 movq %rsi, %rdi / arg 1 63 movq %rdx, %rsi / arg 2 64 movq %rcx, %rdx / arg 3 65 movq %r8, %r10 / r10 = 4th arg 66 syscall 67 .end 68 69 .inline __hypercall5_broken, 0 70 movq %rdi, %rax 71 movq %rsi, %rdi / arg 1 72 movq %rdx, %rsi / arg 2 73 movq %rcx, %rdx / arg 3 74 movq %r8, %r10 / r10 = 4th arg 75 movq %r9, %r8 / arg 5 76 syscall 77 .end 78 79/* 80 * Read the -real- TSC. 81 * This is difficult to virtualize on the hypervisor given there is 82 * no way to prevent preemption; thus this inline function 83 * should only be used in the middle of the paravirtualized 84 * implementation of tsc_read. 85 */ 86 .inline __rdtsc_insn, 0 87 rdtsc 88 shlq $32, %rdx 89 orq %rdx, %rax 90 .end 91