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#include <sys/asm_linkage.h> 28#include <sys/asm_misc.h> 29 30#if defined(__amd64) 31 32 /* 33 * do a cpuid instruction, returning the eax/edx values 34 * 35 * uint32_t get_cpuid_edx(uint32_t *eax) 36 */ 37 ENTRY_NP(get_cpuid_edx) 38 pushq %rbx 39 movl (%rdi), %eax 40 cpuid 41 movl %eax, (%rdi) 42 movl %edx, %eax 43 popq %rbx 44 ret 45 SET_SIZE(get_cpuid_edx) 46 47 /* 48 * void outb(int port, uint8_t value) 49 */ 50 ENTRY(outb) 51 movw %di, %dx 52 movb %sil, %al 53 outb (%dx) 54 ret 55 SET_SIZE(outb) 56 57 /* 58 * uint8_t inb(int port) 59 */ 60 ENTRY(inb) 61 xorl %eax, %eax 62 movw %di, %dx 63 inb (%dx) 64 ret 65 SET_SIZE(inb) 66 67 ENTRY(htonl) 68 movl %edi, %eax 69 bswap %eax 70 ret 71 SET_SIZE(htonl) 72 73#elif defined(__i386) 74 75 .code32 76 77 /* 78 * do a cpuid instruction, returning the eax/edx values 79 * 80 * uint32_t get_cpuid_edx(uint32_t *eax) 81 */ 82 ENTRY_NP(get_cpuid_edx) 83 movl 4(%esp), %ecx 84 movl (%ecx), %eax 85 pushl %ebx 86 cpuid 87 popl %ebx 88 movl 4(%esp), %ecx 89 movl %eax, (%ecx) 90 movl %edx, %eax 91 ret 92 SET_SIZE(get_cpuid_edx) 93 94 /* 95 * void outb(int port, uint8_t value) 96 */ 97 ENTRY_NP(outb) 98 movl 4(%esp), %edx 99 movl 8(%esp), %eax 100 outb (%dx) 101 ret 102 SET_SIZE(outb) 103 104 /* 105 * uint8_t inb(int port) 106 */ 107 ENTRY_NP(inb) 108 movl 4(%esp), %edx 109 inb (%dx) 110 andl $0xff, %eax 111 ret 112 SET_SIZE(inb) 113 114 ENTRY(htonl) 115 movl 4(%esp), %eax 116 bswap %eax 117 ret 118 SET_SIZE(htonl) 119 120#endif /* __i386 */ 121 122