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 "asm_subr.s" 30 31#include <sys/asm_linkage.h> 32#include <sys/trap.h> 33#include <../assym.h> 34#include "SYS.h" 35 36 ! This is where execution resumes when a thread created with 37 ! thr_create() or pthread_create() returns (see setup_context()). 38 ! We pass the (void *) return value to _thr_terminate(). 39 ENTRY(_lwp_start) 40 nop ! this is the location from which the func() was "called" 41 nop 42 call _thr_terminate ! %o0 contains the return value 43 nop 44 SET_SIZE(_lwp_start) 45 46 ENTRY(_lwp_terminate) 47 ! Flush the register windows so the stack can be reused. 48 ta ST_FLUSH_WINDOWS 49 ! All we need to do now is (carefully) call lwp_exit(). 50 mov SYS_lwp_exit, %g1 51 ta SYSCALL_TRAPNUM 52 RET ! if we return, it is very bad 53 SET_SIZE(_lwp_terminate) 54 55 ENTRY(set_curthread) 56 retl 57 mov %o0, %g7 58 SET_SIZE(set_curthread) 59 60#ifdef __sparcv9 61#define GREGSIZE 8 62#else 63#define GREGSIZE 4 64#endif 65 ! void _fetch_globals(greg_t *); 66 ! (called from siglongjmp()) 67 ENTRY(_fetch_globals) 68 stn %g1, [%o0 + 0*GREGSIZE] 69 stn %g2, [%o0 + 1*GREGSIZE] 70 stn %g3, [%o0 + 2*GREGSIZE] 71 stn %g4, [%o0 + 3*GREGSIZE] 72 stn %g5, [%o0 + 4*GREGSIZE] 73 stn %g6, [%o0 + 5*GREGSIZE] 74 retl 75 stn %g7, [%o0 + 6*GREGSIZE] 76 SET_SIZE(_fetch_globals) 77 78#ifdef __sparcv9 79 ENTRY(_getfprs) 80 retl 81 mov %fprs, %o0 82 SET_SIZE(_getfprs) 83#else 84 ENTRY(_getpsr) 85 retl 86 ta ST_GETPSR 87 SET_SIZE(_getpsr) 88#endif 89 90 ENTRY(_getfsr) 91 retl 92 stn %fsr, [%o0] 93 SET_SIZE(_getfsr) 94 95 ENTRY(_setfsr) 96 retl 97 ldn [%o0], %fsr 98 SET_SIZE(_setfsr) 99 100 ENTRY(_flush_windows) 101 retl 102 ta ST_FLUSH_WINDOWS 103 SET_SIZE(_flush_windows) 104 105 ENTRY(__lwp_park) 106 mov %o1, %o2 107 mov %o0, %o1 108 mov 0, %o0 109 SYSTRAP_RVAL1(lwp_park) 110 SYSLWPERR 111 RET 112 SET_SIZE(__lwp_park) 113 114 ENTRY(__lwp_unpark) 115 mov %o0, %o1 116 mov 1, %o0 117 SYSTRAP_RVAL1(lwp_park) 118 SYSLWPERR 119 RET 120 SET_SIZE(__lwp_unpark) 121 122 ENTRY(__lwp_unpark_all) 123 mov %o1, %o2 124 mov %o0, %o1 125 mov 2, %o0 126 SYSTRAP_RVAL1(lwp_park) 127 SYSLWPERR 128 RET 129 SET_SIZE(__lwp_unpark_all) 130 131/* 132 * __sighndlr(int sig, siginfo_t *si, ucontex_t *uc, void (*hndlr)()) 133 * 134 * This is called from sigacthandler() for the entire purpose of 135 * communicating the ucontext to java's stack tracing functions. 136 */ 137 ENTRY(__sighndlr) 138 .globl __sighndlrend 139 save %sp, -SA(MINFRAME), %sp 140 mov %i0, %o0 141 mov %i1, %o1 142 jmpl %i3, %o7 143 mov %i2, %o2 144 ret 145 restore 146__sighndlrend: 147 SET_SIZE(__sighndlr) 148 149/* 150 * int _sigsetjmp(sigjmp_buf env, int savemask) 151 * 152 * This version is faster than the old non-threaded version because we 153 * don't normally have to call __getcontext() to get the signal mask. 154 * (We have a copy of it in the ulwp_t structure.) 155 */ 156 157#undef sigsetjmp 158 159 ENTRY2(sigsetjmp,_sigsetjmp) 160 stn %sp, [%o0 + SJS_SP] ! save caller's sp into env->sjs_sp 161 add %o7, 8, %o2 ! calculate caller's return pc 162 stn %o2, [%o0 + SJS_PC] ! save caller's pc into env->sjs_pc 163 stn %fp, [%o0 + SJS_FP] ! save caller's return linkage 164 stn %i7, [%o0 + SJS_I7] 165 call __csigsetjmp 166 sub %o2, 8, %o7 ! __csigsetjmp returns to caller 167 SET_SIZE(sigsetjmp) 168 SET_SIZE(_sigsetjmp) 169