17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 227c478bd9Sstevel@tonic-gate /* 237c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate #ifndef _ASM_THREAD_H 287c478bd9Sstevel@tonic-gate #define _ASM_THREAD_H 297c478bd9Sstevel@tonic-gate 30*6b7143d7SRichard Lowe #include <sys/ccompile.h> 317c478bd9Sstevel@tonic-gate #include <sys/types.h> 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate #ifdef __cplusplus 347c478bd9Sstevel@tonic-gate extern "C" { 357c478bd9Sstevel@tonic-gate #endif 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate #if !defined(__lint) && defined(__GNUC__) 387c478bd9Sstevel@tonic-gate 397c478bd9Sstevel@tonic-gate struct _kthread; 407c478bd9Sstevel@tonic-gate 417c478bd9Sstevel@tonic-gate /* 427c478bd9Sstevel@tonic-gate * 0x10 is offsetof(struct cpu, cpu_thread) 437c478bd9Sstevel@tonic-gate * 0x18 is the same thing for the _LP64 version. 447c478bd9Sstevel@tonic-gate * (It's also the value of CPU_THREAD in assym.h) 457c478bd9Sstevel@tonic-gate * Yuck. 467c478bd9Sstevel@tonic-gate */ 477c478bd9Sstevel@tonic-gate 48*6b7143d7SRichard Lowe extern __GNU_INLINE struct _kthread 49*6b7143d7SRichard Lowe *threadp(void) 507c478bd9Sstevel@tonic-gate { 517c478bd9Sstevel@tonic-gate void *__value; 527c478bd9Sstevel@tonic-gate 537c478bd9Sstevel@tonic-gate #if defined(__amd64) 547c478bd9Sstevel@tonic-gate __asm__ __volatile__( 557c478bd9Sstevel@tonic-gate "movq %%gs:0x18,%0" /* CPU_THREAD */ 567c478bd9Sstevel@tonic-gate : "=r" (__value)); 577c478bd9Sstevel@tonic-gate #elif defined(__i386) 587c478bd9Sstevel@tonic-gate __asm__ __volatile__( 597c478bd9Sstevel@tonic-gate "movl %%gs:0x10,%0" /* CPU_THREAD */ 607c478bd9Sstevel@tonic-gate : "=r" (__value)); 617c478bd9Sstevel@tonic-gate #else 627c478bd9Sstevel@tonic-gate #error "port me" 637c478bd9Sstevel@tonic-gate #endif 647c478bd9Sstevel@tonic-gate return (__value); 657c478bd9Sstevel@tonic-gate } 667c478bd9Sstevel@tonic-gate 677c478bd9Sstevel@tonic-gate #endif /* !__lint && __GNUC__ */ 687c478bd9Sstevel@tonic-gate 697c478bd9Sstevel@tonic-gate #ifdef __cplusplus 707c478bd9Sstevel@tonic-gate } 717c478bd9Sstevel@tonic-gate #endif 727c478bd9Sstevel@tonic-gate 737c478bd9Sstevel@tonic-gate #endif /* _ASM_THREAD_H */ 74