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 2008 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 .file "%M%" 30 31#include <SYS.h> 32 33 / This is where execution resumes when a thread created with 34 / thr_create() or pthread_create() returns (see setup_context()). 35 / We pass the (void *) return value to _thr_terminate(). 36 ENTRY(_lwp_start) 37 addl $4, %esp 38 pushl %eax 39 call _thr_terminate 40 addl $4, %esp / actually, never returns 41 SET_SIZE(_lwp_start) 42 43 / All we need to do now is (carefully) call lwp_exit(). 44 ENTRY(_lwp_terminate) 45 SYSTRAP_RVAL1(lwp_exit) 46 RET / if we return, it is very bad 47 SET_SIZE(_lwp_terminate) 48 49 ENTRY(set_curthread) 50 movl 4(%esp), %eax 51 movl %eax, %gs:0 52 ret 53 SET_SIZE(set_curthread) 54 55 ENTRY(__lwp_park) 56 popl %edx / add subcode; save return address 57 pushl $0 58 pushl %edx 59 SYSTRAP_RVAL1(lwp_park) 60 SYSLWPERR 61 popl %edx / restore return address 62 movl %edx, 0(%esp) 63 RET 64 SET_SIZE(__lwp_park) 65 66 ENTRY(__lwp_unpark) 67 popl %edx / add subcode; save return address 68 pushl $1 69 pushl %edx 70 SYSTRAP_RVAL1(lwp_park) 71 SYSLWPERR 72 popl %edx / restore return address 73 movl %edx, 0(%esp) 74 RET 75 SET_SIZE(__lwp_unpark) 76 77 ENTRY(__lwp_unpark_all) 78 popl %edx / add subcode; save return address 79 pushl $2 80 pushl %edx 81 SYSTRAP_RVAL1(lwp_park) 82 SYSLWPERR 83 popl %edx / restore return address 84 movl %edx, 0(%esp) 85 RET 86 SET_SIZE(__lwp_unpark_all) 87 88/* 89 * __sighndlr(int sig, siginfo_t *si, ucontext_t *uc, void (*hndlr)()) 90 * 91 * This is called from sigacthandler() for the entire purpose of 92 * communicating the ucontext to java's stack tracing functions. 93 */ 94 ENTRY(__sighndlr) 95 .globl __sighndlrend 96 pushl %ebp 97 movl %esp, %ebp 98 pushl 16(%ebp) 99 pushl 12(%ebp) 100 pushl 8(%ebp) 101 call *20(%ebp) 102 addl $12, %esp 103 leave 104 ret 105__sighndlrend: 106 SET_SIZE(__sighndlr) 107 108/* 109 * int _sigsetjmp(sigjmp_buf env, int savemask) 110 * 111 * This version is faster than the old non-threaded version because we 112 * don't normally have to call __getcontext() to get the signal mask. 113 * (We have a copy of it in the ulwp_t structure.) 114 */ 115 116#undef sigsetjmp 117 118 ENTRY2(sigsetjmp,_sigsetjmp) / EIP already pushed 119 pusha / EAX .. EDI 120 push %ds / segment registers 121 push %es 122 push %fs 123 push %gs 124 push %ss 125 push %cs 126 / args: cs, ss, gs, ..., eip, env, savemask 127 call __csigsetjmp 128 addl $56, %esp / pop 14 words 129 ret 130 SET_SIZE(sigsetjmp) 131 SET_SIZE(_sigsetjmp) 132