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 56812Sraf * Common Development and Distribution License (the "License"). 66812Sraf * 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 */ 216812Sraf 226812Sraf/* 236812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 246812Sraf * Use is subject to license terms. 256812Sraf */ 266812Sraf 270Sstevel@tonic-gate/* Copyright (c) 1988 AT&T */ 280Sstevel@tonic-gate/* All Rights Reserved */ 290Sstevel@tonic-gate 300Sstevel@tonic-gate/* 310Sstevel@tonic-gate * C library -- int syscall(int sysnum, ...); 320Sstevel@tonic-gate * C library -- int __systemcall(sysret_t *, int sysnum, ...); 330Sstevel@tonic-gate * 340Sstevel@tonic-gate * Interpret a given system call 350Sstevel@tonic-gate * 360Sstevel@tonic-gate * This version handles up to 8 'long' arguments to a system call. 370Sstevel@tonic-gate * 380Sstevel@tonic-gate * Even though indirect system call support exists in the SPARC 390Sstevel@tonic-gate * 32-bit kernel, we want to eliminate it in a future release, 400Sstevel@tonic-gate * so the real trap for the desired system call is issued right here. 410Sstevel@tonic-gate * 420Sstevel@tonic-gate * Even though %g5 can be used as a scratch register for sparcv9, we don't 430Sstevel@tonic-gate * use it here because this code is shared between sparcv8 and sparcv9. 440Sstevel@tonic-gate */ 450Sstevel@tonic-gate 46*7298SMark.J.Nelson@Sun.COM .file "syscall.s" 470Sstevel@tonic-gate 486812Sraf#include "SYS.h" 490Sstevel@tonic-gate 500Sstevel@tonic-gate ANSI_PRAGMA_WEAK(syscall,function) 510Sstevel@tonic-gate 526812Sraf ENTRY(syscall) 530Sstevel@tonic-gate save %sp, -SA(MINFRAME + 2*CLONGSIZE), %sp 540Sstevel@tonic-gate ldn [%fp + STACK_BIAS + MINFRAME], %o5 ! arg 5 550Sstevel@tonic-gate mov %i3, %o2 ! arg 2 560Sstevel@tonic-gate ldn [%fp + STACK_BIAS + MINFRAME + CLONGSIZE], %g1 570Sstevel@tonic-gate mov %i4, %o3 ! arg 3 580Sstevel@tonic-gate stn %g1, [%sp + STACK_BIAS + MINFRAME] ! arg 6 590Sstevel@tonic-gate mov %i5, %o4 ! arg 4 600Sstevel@tonic-gate ldn [%fp + STACK_BIAS + MINFRAME + 2*CLONGSIZE], %g1 610Sstevel@tonic-gate mov %i1, %o0 ! arg 0 620Sstevel@tonic-gate stn %g1, [%sp + STACK_BIAS + MINFRAME + CLONGSIZE] ! arg 7 630Sstevel@tonic-gate mov %i2, %o1 ! arg 1 640Sstevel@tonic-gate mov %i0, %g1 ! sysnum 650Sstevel@tonic-gate ta SYSCALL_TRAPNUM 660Sstevel@tonic-gate bcc,a,pt %icc, 1f 670Sstevel@tonic-gate sra %o0, 0, %i0 ! (int) cast 680Sstevel@tonic-gate restore %o0, 0, %o0 690Sstevel@tonic-gate ba __cerror 700Sstevel@tonic-gate nop 710Sstevel@tonic-gate1: 720Sstevel@tonic-gate ret 730Sstevel@tonic-gate restore 746812Sraf SET_SIZE(syscall) 750Sstevel@tonic-gate 760Sstevel@tonic-gate/* 770Sstevel@tonic-gate * Same as _syscall(), but restricted to 6 syscall arguments 780Sstevel@tonic-gate * so it doesn't need to incur the overhead of a register window. 790Sstevel@tonic-gate * Implemented for use only within libc; symbol is not exported. 800Sstevel@tonic-gate */ 810Sstevel@tonic-gate ENTRY(_syscall6) 820Sstevel@tonic-gate mov %o0, %g1 /* sysnum */ 830Sstevel@tonic-gate mov %o1, %o0 /* syscall args */ 840Sstevel@tonic-gate mov %o2, %o1 850Sstevel@tonic-gate mov %o3, %o2 860Sstevel@tonic-gate mov %o4, %o3 870Sstevel@tonic-gate mov %o5, %o4 880Sstevel@tonic-gate ldn [%sp + STACK_BIAS + MINFRAME], %o5 890Sstevel@tonic-gate ta SYSCALL_TRAPNUM 900Sstevel@tonic-gate SYSCERROR 910Sstevel@tonic-gate retl 920Sstevel@tonic-gate sra %o0, 0, %o0 /* (int) cast */ 930Sstevel@tonic-gate SET_SIZE(_syscall6) 940Sstevel@tonic-gate 950Sstevel@tonic-gate ENTRY(__systemcall) 960Sstevel@tonic-gate save %sp, -SA(MINFRAME + 2*CLONGSIZE), %sp 970Sstevel@tonic-gate ldn [%fp + STACK_BIAS + MINFRAME], %o4 ! arg 4 980Sstevel@tonic-gate mov %i3, %o1 ! arg 1 990Sstevel@tonic-gate ldn [%fp + STACK_BIAS + MINFRAME + CLONGSIZE], %o5 ! arg5 1000Sstevel@tonic-gate mov %i4, %o2 ! arg 2 1010Sstevel@tonic-gate ldn [%fp + STACK_BIAS + MINFRAME + 2*CLONGSIZE], %g1 1020Sstevel@tonic-gate mov %i5, %o3 ! arg 3 1030Sstevel@tonic-gate stn %g1, [%sp + STACK_BIAS + MINFRAME] ! arg 6 1040Sstevel@tonic-gate mov %i2, %o0 ! arg 0 1050Sstevel@tonic-gate ldn [%fp + STACK_BIAS + MINFRAME + 3*CLONGSIZE], %g1 1060Sstevel@tonic-gate stn %g1, [%sp + STACK_BIAS + MINFRAME + CLONGSIZE] ! arg7 1070Sstevel@tonic-gate mov %i1, %g1 ! sysnum 1080Sstevel@tonic-gate ta SYSCALL_TRAPNUM 1090Sstevel@tonic-gate bcc,pt %icc, 1f 1100Sstevel@tonic-gate mov -1, %g1 1110Sstevel@tonic-gate stn %g1, [%i0] /* error */ 1120Sstevel@tonic-gate ba 2f 1130Sstevel@tonic-gate stn %g1, [%i0 + CLONGSIZE] 1140Sstevel@tonic-gate1: 1150Sstevel@tonic-gate stn %o0, [%i0] /* no error */ 1160Sstevel@tonic-gate clr %o0 1170Sstevel@tonic-gate stn %o1, [%i0 + CLONGSIZE] 1180Sstevel@tonic-gate2: 1190Sstevel@tonic-gate ret 1200Sstevel@tonic-gate restore %o0, 0, %o0 1210Sstevel@tonic-gate SET_SIZE(__systemcall) 1220Sstevel@tonic-gate 1230Sstevel@tonic-gate/* 1240Sstevel@tonic-gate * Same as __systemcall(), but restricted to 6 syscall arguments 1250Sstevel@tonic-gate * so it doesn't need to incur the overhead of a register window. 1260Sstevel@tonic-gate * Implemented for use only within libc; symbol is not exported. 1270Sstevel@tonic-gate */ 1280Sstevel@tonic-gate ENTRY(__systemcall6) 1290Sstevel@tonic-gate stn %o0, [%sp + SAVE_OFFSET] /* sysret address */ 1300Sstevel@tonic-gate mov %o1, %g1 /* sysnum */ 1310Sstevel@tonic-gate mov %o2, %o0 /* syscall args */ 1320Sstevel@tonic-gate mov %o3, %o1 1330Sstevel@tonic-gate mov %o4, %o2 1340Sstevel@tonic-gate mov %o5, %o3 1350Sstevel@tonic-gate ldn [%sp + STACK_BIAS + MINFRAME], %o4 1360Sstevel@tonic-gate ldn [%sp + STACK_BIAS + MINFRAME + CLONGSIZE], %o5 1370Sstevel@tonic-gate ta SYSCALL_TRAPNUM 1380Sstevel@tonic-gate bcs,pn %icc, 1f 1390Sstevel@tonic-gate ldn [%sp + SAVE_OFFSET], %g1 1400Sstevel@tonic-gate stn %o0, [%g1] /* no error */ 1410Sstevel@tonic-gate stn %o1, [%g1 + CLONGSIZE] 1420Sstevel@tonic-gate retl 1430Sstevel@tonic-gate clr %o0 1440Sstevel@tonic-gate1: 1450Sstevel@tonic-gate mov -1, %o1 /* error */ 1460Sstevel@tonic-gate stn %o1, [%g1] 1470Sstevel@tonic-gate retl 1480Sstevel@tonic-gate stn %o1, [%g1 + CLONGSIZE] 1490Sstevel@tonic-gate SET_SIZE(__systemcall6) 150