1*0Sstevel@tonic-gate/* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate/* 23*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate#pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate .file "%M%" 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate#include <sys/asm_linkage.h> 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate /* 34*0Sstevel@tonic-gate * weak aliases for public interfaces 35*0Sstevel@tonic-gate */ 36*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(_door_bind,function) 37*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(_door_call,function) 38*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(_door_getparam,function) 39*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(_door_info,function) 40*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(_door_revoke,function) 41*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(_door_setparam,function) 42*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(_door_unbind,function) 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(door_bind,function) 45*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(door_call,function) 46*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(door_getparam,function) 47*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(door_info,function) 48*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(door_revoke,function) 49*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(door_setparam,function) 50*0Sstevel@tonic-gate ANSI_PRAGMA_WEAK(door_unbind,function) 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate#include <sys/door.h> 53*0Sstevel@tonic-gate#include "SYS.h" 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate/* 56*0Sstevel@tonic-gate * Offsets within struct door_results 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate#define DOOR_COOKIE (SA(MINFRAME) + STACK_BIAS + 0*CLONGSIZE) 59*0Sstevel@tonic-gate#define DOOR_DATA_PTR (SA(MINFRAME) + STACK_BIAS + 1*CLONGSIZE) 60*0Sstevel@tonic-gate#define DOOR_DATA_SIZE (SA(MINFRAME) + STACK_BIAS + 2*CLONGSIZE) 61*0Sstevel@tonic-gate#define DOOR_DESC_PTR (SA(MINFRAME) + STACK_BIAS + 3*CLONGSIZE) 62*0Sstevel@tonic-gate#define DOOR_DESC_SIZE (SA(MINFRAME) + STACK_BIAS + 4*CLONGSIZE) 63*0Sstevel@tonic-gate#define DOOR_PC (SA(MINFRAME) + STACK_BIAS + 5*CLONGSIZE) 64*0Sstevel@tonic-gate#define DOOR_SERVERS (SA(MINFRAME) + STACK_BIAS + 6*CLONGSIZE) 65*0Sstevel@tonic-gate#define DOOR_INFO_PTR (SA(MINFRAME) + STACK_BIAS + 7*CLONGSIZE) 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate/* 68*0Sstevel@tonic-gate * All of the syscalls except door_return() follow the same pattern. The 69*0Sstevel@tonic-gate * subcode goes in %o5, after all of the other arguments. 70*0Sstevel@tonic-gate */ 71*0Sstevel@tonic-gate#define DOOR_SYSCALL(name, code) \ 72*0Sstevel@tonic-gate ENTRY(name); \ 73*0Sstevel@tonic-gate mov code, %o5; /* subcode */ \ 74*0Sstevel@tonic-gate SYSTRAP_RVAL1(door); \ 75*0Sstevel@tonic-gate SYSCERROR; \ 76*0Sstevel@tonic-gate RET; \ 77*0Sstevel@tonic-gate SET_SIZE(name) 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate DOOR_SYSCALL(__door_bind, DOOR_BIND) 80*0Sstevel@tonic-gate DOOR_SYSCALL(__door_call, DOOR_CALL) 81*0Sstevel@tonic-gate DOOR_SYSCALL(__door_create, DOOR_CREATE) 82*0Sstevel@tonic-gate DOOR_SYSCALL(__door_getparam, DOOR_GETPARAM) 83*0Sstevel@tonic-gate DOOR_SYSCALL(__door_info, DOOR_INFO) 84*0Sstevel@tonic-gate DOOR_SYSCALL(__door_revoke, DOOR_REVOKE) 85*0Sstevel@tonic-gate DOOR_SYSCALL(__door_setparam, DOOR_SETPARAM) 86*0Sstevel@tonic-gate DOOR_SYSCALL(__door_ucred, DOOR_UCRED) 87*0Sstevel@tonic-gate DOOR_SYSCALL(__door_unbind, DOOR_UNBIND) 88*0Sstevel@tonic-gate DOOR_SYSCALL(__door_unref, DOOR_UNREFSYS) 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate/* 91*0Sstevel@tonic-gate * int 92*0Sstevel@tonic-gate * __door_return( 93*0Sstevel@tonic-gate * void *data_ptr, 94*0Sstevel@tonic-gate * size_t data_size, (in bytes) 95*0Sstevel@tonic-gate * door_return_desc_t *door_ptr, (holds returned desc info) 96*0Sstevel@tonic-gate * caddr_t stack_base, 97*0Sstevel@tonic-gate * size_t stack_size) 98*0Sstevel@tonic-gate */ 99*0Sstevel@tonic-gate ENTRY(__door_return) 100*0Sstevel@tonic-gatedoor_restart: 101*0Sstevel@tonic-gate mov DOOR_RETURN, %o5 /* subcode */ 102*0Sstevel@tonic-gate SYSTRAP_RVAL1(door) 103*0Sstevel@tonic-gate bcs,pn %icc, 2f /* errno is set */ 104*0Sstevel@tonic-gate ld [%sp + DOOR_SERVERS], %g1 /* (delay) load nservers */ 105*0Sstevel@tonic-gate /* 106*0Sstevel@tonic-gate * On return, we're serving a door_call. Our stack looks like this: 107*0Sstevel@tonic-gate * 108*0Sstevel@tonic-gate * descriptors (if any) 109*0Sstevel@tonic-gate * data (if any) 110*0Sstevel@tonic-gate * struct door_results 111*0Sstevel@tonic-gate * MINFRAME 112*0Sstevel@tonic-gate * sp -> 113*0Sstevel@tonic-gate */ 114*0Sstevel@tonic-gate tst %g1 /* test nservers */ 115*0Sstevel@tonic-gate bg 1f /* everything looks o.k. */ 116*0Sstevel@tonic-gate ldn [%sp + DOOR_COOKIE], %o0 /* (delay) load cookie */ 117*0Sstevel@tonic-gate /* 118*0Sstevel@tonic-gate * this is the last server thread - call creation func for more 119*0Sstevel@tonic-gate */ 120*0Sstevel@tonic-gate save %sp, -SA(MINFRAME), %sp 121*0Sstevel@tonic-gate PIC_SETUP(g1) 122*0Sstevel@tonic-gate#ifdef __sparcv9 123*0Sstevel@tonic-gate sethi %hi(door_server_func), %g5 124*0Sstevel@tonic-gate or %g5, %lo(door_server_func), %g5 125*0Sstevel@tonic-gate ldn [%g5 + %g1], %g1 126*0Sstevel@tonic-gate#else 127*0Sstevel@tonic-gate ldn [%g1 + door_server_func], %g1 128*0Sstevel@tonic-gate#endif 129*0Sstevel@tonic-gate ldn [%g1], %g1 130*0Sstevel@tonic-gate jmpl %g1, %o7 /* call create function */ 131*0Sstevel@tonic-gate ldn [%fp + DOOR_INFO_PTR], %o0 /* (delay) load door_info ptr */ 132*0Sstevel@tonic-gate restore 133*0Sstevel@tonic-gate1: 134*0Sstevel@tonic-gate /* Call the door server function now */ 135*0Sstevel@tonic-gate ldn [%sp + DOOR_DATA_PTR], %o1 136*0Sstevel@tonic-gate ldn [%sp + DOOR_DATA_SIZE], %o2 137*0Sstevel@tonic-gate ldn [%sp + DOOR_DESC_PTR], %o3 138*0Sstevel@tonic-gate ldn [%sp + DOOR_PC], %g1 139*0Sstevel@tonic-gate jmpl %g1, %o7 140*0Sstevel@tonic-gate ldn [%sp + DOOR_DESC_SIZE], %o4 141*0Sstevel@tonic-gate 142*0Sstevel@tonic-gate /* Exit the thread if we return here */ 143*0Sstevel@tonic-gate call _thr_terminate 144*0Sstevel@tonic-gate mov %g0, %o0 145*0Sstevel@tonic-gate /* NOTREACHED */ 146*0Sstevel@tonic-gate2: 147*0Sstevel@tonic-gate /* 148*0Sstevel@tonic-gate * Error during door_return call. Repark the thread in the kernel if 149*0Sstevel@tonic-gate * the error code is EINTR (or ERESTART) and this lwp is still part 150*0Sstevel@tonic-gate * of the same process. 151*0Sstevel@tonic-gate */ 152*0Sstevel@tonic-gate cmp %o0, ERESTART /* ERESTART is same as EINTR */ 153*0Sstevel@tonic-gate be,a 3f 154*0Sstevel@tonic-gate mov EINTR, %o0 155*0Sstevel@tonic-gate3: 156*0Sstevel@tonic-gate cmp %o0, EINTR /* interrupted while waiting? */ 157*0Sstevel@tonic-gate bne __cerror /* if not, return the error */ 158*0Sstevel@tonic-gate nop 159*0Sstevel@tonic-gate 160*0Sstevel@tonic-gate save %sp, -SA(MINFRAME), %sp 161*0Sstevel@tonic-gate call _private_getpid /* get current process id */ 162*0Sstevel@tonic-gate nop 163*0Sstevel@tonic-gate PIC_SETUP(g1) 164*0Sstevel@tonic-gate#ifdef __sparcv9 165*0Sstevel@tonic-gate sethi %hi(door_create_pid), %g5 166*0Sstevel@tonic-gate or %g5, %lo(door_create_pid), %g5 167*0Sstevel@tonic-gate ldn [%g1 + %g5], %g1 168*0Sstevel@tonic-gate#else 169*0Sstevel@tonic-gate ldn [%g1 + door_create_pid], %g1 170*0Sstevel@tonic-gate#endif 171*0Sstevel@tonic-gate ld [%g1], %g1 172*0Sstevel@tonic-gate cmp %o0, %g1 /* same process? */ 173*0Sstevel@tonic-gate mov EINTR, %o0 /* if no, return EINTR (child of forkall) */ 174*0Sstevel@tonic-gate bne __cerror 175*0Sstevel@tonic-gate restore 176*0Sstevel@tonic-gate 177*0Sstevel@tonic-gate clr %o0 /* clear arguments and restart */ 178*0Sstevel@tonic-gate clr %o1 179*0Sstevel@tonic-gate ba door_restart 180*0Sstevel@tonic-gate clr %o2 181*0Sstevel@tonic-gate SET_SIZE(__door_return) 182