10Sstevel@tonic-gate/* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 56515Sraf * Common Development and Distribution License (the "License"). 66515Sraf * You may not use this file except in compliance with the License. 70Sstevel@tonic-gate * 80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 100Sstevel@tonic-gate * See the License for the specific language governing permissions 110Sstevel@tonic-gate * and limitations under the License. 120Sstevel@tonic-gate * 130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 180Sstevel@tonic-gate * 190Sstevel@tonic-gate * CDDL HEADER END 200Sstevel@tonic-gate */ 216515Sraf 220Sstevel@tonic-gate/* 23*10607SRoger.Faulkner@Sun.COM * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 240Sstevel@tonic-gate * Use is subject to license terms. 250Sstevel@tonic-gate */ 260Sstevel@tonic-gate 277298SMark.J.Nelson@Sun.COM .file "asm_subr.s" 280Sstevel@tonic-gate 290Sstevel@tonic-gate#include <SYS.h> 300Sstevel@tonic-gate 310Sstevel@tonic-gate / This is where execution resumes when a thread created with 320Sstevel@tonic-gate / thr_create() or pthread_create() returns (see setup_context()). 336812Sraf / We pass the (void *) return value to _thrp_terminate(). 340Sstevel@tonic-gate ENTRY(_lwp_start) 350Sstevel@tonic-gate addl $4, %esp 360Sstevel@tonic-gate pushl %eax 376812Sraf call _thrp_terminate 380Sstevel@tonic-gate addl $4, %esp / actually, never returns 390Sstevel@tonic-gate SET_SIZE(_lwp_start) 400Sstevel@tonic-gate 410Sstevel@tonic-gate / All we need to do now is (carefully) call lwp_exit(). 420Sstevel@tonic-gate ENTRY(_lwp_terminate) 430Sstevel@tonic-gate SYSTRAP_RVAL1(lwp_exit) 440Sstevel@tonic-gate RET / if we return, it is very bad 450Sstevel@tonic-gate SET_SIZE(_lwp_terminate) 460Sstevel@tonic-gate 470Sstevel@tonic-gate ENTRY(set_curthread) 480Sstevel@tonic-gate movl 4(%esp), %eax 490Sstevel@tonic-gate movl %eax, %gs:0 500Sstevel@tonic-gate ret 510Sstevel@tonic-gate SET_SIZE(set_curthread) 520Sstevel@tonic-gate 530Sstevel@tonic-gate ENTRY(__lwp_park) 540Sstevel@tonic-gate popl %edx / add subcode; save return address 550Sstevel@tonic-gate pushl $0 560Sstevel@tonic-gate pushl %edx 570Sstevel@tonic-gate SYSTRAP_RVAL1(lwp_park) 580Sstevel@tonic-gate SYSLWPERR 590Sstevel@tonic-gate popl %edx / restore return address 600Sstevel@tonic-gate movl %edx, 0(%esp) 610Sstevel@tonic-gate RET 620Sstevel@tonic-gate SET_SIZE(__lwp_park) 630Sstevel@tonic-gate 640Sstevel@tonic-gate ENTRY(__lwp_unpark) 650Sstevel@tonic-gate popl %edx / add subcode; save return address 660Sstevel@tonic-gate pushl $1 670Sstevel@tonic-gate pushl %edx 680Sstevel@tonic-gate SYSTRAP_RVAL1(lwp_park) 690Sstevel@tonic-gate SYSLWPERR 700Sstevel@tonic-gate popl %edx / restore return address 710Sstevel@tonic-gate movl %edx, 0(%esp) 720Sstevel@tonic-gate RET 730Sstevel@tonic-gate SET_SIZE(__lwp_unpark) 740Sstevel@tonic-gate 750Sstevel@tonic-gate ENTRY(__lwp_unpark_all) 760Sstevel@tonic-gate popl %edx / add subcode; save return address 770Sstevel@tonic-gate pushl $2 780Sstevel@tonic-gate pushl %edx 790Sstevel@tonic-gate SYSTRAP_RVAL1(lwp_park) 800Sstevel@tonic-gate SYSLWPERR 810Sstevel@tonic-gate popl %edx / restore return address 820Sstevel@tonic-gate movl %edx, 0(%esp) 830Sstevel@tonic-gate RET 840Sstevel@tonic-gate SET_SIZE(__lwp_unpark_all) 850Sstevel@tonic-gate 860Sstevel@tonic-gate/* 870Sstevel@tonic-gate * __sighndlr(int sig, siginfo_t *si, ucontext_t *uc, void (*hndlr)()) 880Sstevel@tonic-gate * 89*10607SRoger.Faulkner@Sun.COM * This is called from sigacthandler() for the purpose of 90*10607SRoger.Faulkner@Sun.COM * communicating the ucontext to java's stack tracing functions 91*10607SRoger.Faulkner@Sun.COM * and to ensure a 16-byte aligned stack pointer for the benefit 92*10607SRoger.Faulkner@Sun.COM * of gcc-compiled floating point code 930Sstevel@tonic-gate */ 940Sstevel@tonic-gate ENTRY(__sighndlr) 950Sstevel@tonic-gate .globl __sighndlrend 960Sstevel@tonic-gate pushl %ebp 970Sstevel@tonic-gate movl %esp, %ebp 98*10607SRoger.Faulkner@Sun.COM andl $-16,%esp / make sure handler is called with 99*10607SRoger.Faulkner@Sun.COM subl $4,%esp / a 16-byte aligned stack pointer 1000Sstevel@tonic-gate pushl 16(%ebp) 1010Sstevel@tonic-gate pushl 12(%ebp) 1020Sstevel@tonic-gate pushl 8(%ebp) 1030Sstevel@tonic-gate call *20(%ebp) 1040Sstevel@tonic-gate leave 1050Sstevel@tonic-gate ret 1060Sstevel@tonic-gate__sighndlrend: 1070Sstevel@tonic-gate SET_SIZE(__sighndlr) 1080Sstevel@tonic-gate 1090Sstevel@tonic-gate/* 1100Sstevel@tonic-gate * int _sigsetjmp(sigjmp_buf env, int savemask) 1110Sstevel@tonic-gate * 1120Sstevel@tonic-gate * This version is faster than the old non-threaded version because we 1130Sstevel@tonic-gate * don't normally have to call __getcontext() to get the signal mask. 1140Sstevel@tonic-gate * (We have a copy of it in the ulwp_t structure.) 1150Sstevel@tonic-gate */ 1160Sstevel@tonic-gate 1170Sstevel@tonic-gate#undef sigsetjmp 1180Sstevel@tonic-gate 1190Sstevel@tonic-gate ENTRY2(sigsetjmp,_sigsetjmp) / EIP already pushed 1200Sstevel@tonic-gate pusha / EAX .. EDI 1210Sstevel@tonic-gate push %ds / segment registers 1220Sstevel@tonic-gate push %es 1230Sstevel@tonic-gate push %fs 1240Sstevel@tonic-gate push %gs 1250Sstevel@tonic-gate push %ss 1260Sstevel@tonic-gate push %cs 1270Sstevel@tonic-gate / args: cs, ss, gs, ..., eip, env, savemask 1280Sstevel@tonic-gate call __csigsetjmp 1290Sstevel@tonic-gate addl $56, %esp / pop 14 words 1300Sstevel@tonic-gate ret 1310Sstevel@tonic-gate SET_SIZE(sigsetjmp) 1320Sstevel@tonic-gate SET_SIZE(_sigsetjmp) 133