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#include <sys/asm_linkage.h> 30#include <sys/asm_misc.h> 31 32#if defined(__lint) 33 34#include "dboot_asm.h" 35 36/* ARGSUSED */ 37uint32_t 38get_cpuid_edx(uint32_t *eax) 39{ return (0); } 40 41/* ARGSUSED */ 42void 43outb(int port, uint8_t value) 44{} 45 46/* ARGSUSED */ 47uint8_t 48inb(int port) 49{ return (0); } 50 51#else /* __lint */ 52 53#if defined(__amd64) 54 55 /* 56 * do a cpuid instruction, returning the eax/edx values 57 * 58 * uint32_t get_cpuid_edx(uint32_t *eax) 59 */ 60 ENTRY_NP(get_cpuid_edx) 61 pushq %rbx 62 movl (%rdi), %eax 63 cpuid 64 movl %eax, (%rdi) 65 movl %edx, %eax 66 popq %rbx 67 ret 68 SET_SIZE(get_cpuid_edx) 69 70 /* 71 * void outb(int port, uint8_t value) 72 */ 73 ENTRY(outb) 74 movw %di, %dx 75 movb %sil, %al 76 outb (%dx) 77 ret 78 SET_SIZE(outb) 79 80 /* 81 * uint8_t inb(int port) 82 */ 83 ENTRY(inb) 84 xorl %eax, %eax 85 movw %di, %dx 86 inb (%dx) 87 ret 88 SET_SIZE(inb) 89 90#elif defined(__i386) 91 92 .code32 93 94 /* 95 * do a cpuid instruction, returning the eax/edx values 96 * 97 * uint32_t get_cpuid_edx(uint32_t *eax) 98 */ 99 ENTRY_NP(get_cpuid_edx) 100 movl 4(%esp), %ecx 101 movl (%ecx), %eax 102 pushl %ebx 103 cpuid 104 popl %ebx 105 movl 4(%esp), %ecx 106 movl %eax, (%ecx) 107 movl %edx, %eax 108 ret 109 SET_SIZE(get_cpuid_edx) 110 111 /* 112 * void outb(int port, uint8_t value) 113 */ 114 ENTRY_NP(outb) 115 movl 4(%esp), %edx 116 movl 8(%esp), %eax 117 outb (%dx) 118 ret 119 SET_SIZE(outb) 120 121 /* 122 * uint8_t inb(int port) 123 */ 124 ENTRY_NP(inb) 125 movl 4(%esp), %edx 126 inb (%dx) 127 andl $0xff, %eax 128 ret 129 SET_SIZE(inb) 130 131#endif /* __i386 */ 132 133#endif /* __lint */ 134