17c478bd9Sstevel@tonic-gate/* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 227c478bd9Sstevel@tonic-gate/* 237c478bd9Sstevel@tonic-gate * Copyright (c) 1987 Sun Microsystems, Inc. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate#ident "%Z%%M% %I% %E% SMI" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate .file "stret.s" 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate#include <sys/asm_linkage.h> 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate#define FROM %o0 337c478bd9Sstevel@tonic-gate#define SIZE %o1 347c478bd9Sstevel@tonic-gate#define TO %i0 357c478bd9Sstevel@tonic-gate#define MEMWORD %o3 /* use o-registers as temps */ 367c478bd9Sstevel@tonic-gate#define TEMP %o4 377c478bd9Sstevel@tonic-gate#define TEMP2 %o5 387c478bd9Sstevel@tonic-gate#define UNIMP 0 397c478bd9Sstevel@tonic-gate#define MASK 0x00000fff 407c478bd9Sstevel@tonic-gate#define STRUCT_VAL_OFF (16*4) 417c478bd9Sstevel@tonic-gate#if STRET4 427c478bd9Sstevel@tonic-gate# define BYTES_PER_MOVE 4 437c478bd9Sstevel@tonic-gate# define LD ld 447c478bd9Sstevel@tonic-gate# define ST st 457c478bd9Sstevel@tonic-gate ENTRY2(.stret4,.stret8) 467c478bd9Sstevel@tonic-gate#endif 477c478bd9Sstevel@tonic-gate#if STRET2 487c478bd9Sstevel@tonic-gate# define BYTES_PER_MOVE 2 497c478bd9Sstevel@tonic-gate# define LD lduh 507c478bd9Sstevel@tonic-gate# define ST sth 517c478bd9Sstevel@tonic-gate ENTRY(.stret2) 527c478bd9Sstevel@tonic-gate#endif 537c478bd9Sstevel@tonic-gate#if STRET1 547c478bd9Sstevel@tonic-gate# define BYTES_PER_MOVE 1 557c478bd9Sstevel@tonic-gate# define LD ldub 567c478bd9Sstevel@tonic-gate# define ST stb 577c478bd9Sstevel@tonic-gate ENTRY(.stret1) 587c478bd9Sstevel@tonic-gate#endif 597c478bd9Sstevel@tonic-gate 607c478bd9Sstevel@tonic-gate /* 617c478bd9Sstevel@tonic-gate * see if key matches: if not, 627c478bd9Sstevel@tonic-gate * structure value not expected, 637c478bd9Sstevel@tonic-gate * so just return 647c478bd9Sstevel@tonic-gate */ 657c478bd9Sstevel@tonic-gate ld [%i7+8],MEMWORD 667c478bd9Sstevel@tonic-gate and SIZE,MASK,TEMP 677c478bd9Sstevel@tonic-gate sethi %hi(UNIMP),TEMP2 687c478bd9Sstevel@tonic-gate or TEMP,TEMP2,TEMP2 697c478bd9Sstevel@tonic-gate cmp TEMP2,MEMWORD 707c478bd9Sstevel@tonic-gate bne .LE12 717c478bd9Sstevel@tonic-gate .empty 727c478bd9Sstevel@tonic-gate /* 737c478bd9Sstevel@tonic-gate * set expected return value 747c478bd9Sstevel@tonic-gate */ 757c478bd9Sstevel@tonic-gate.L14: 767c478bd9Sstevel@tonic-gate ld [%fp+STRUCT_VAL_OFF],TO /* (DELAY SLOT) */ 77*55fea89dSDan Cross /* 787c478bd9Sstevel@tonic-gate * copy the struct using the same loop the compiler does 797c478bd9Sstevel@tonic-gate * for large structure assignment 807c478bd9Sstevel@tonic-gate */ 817c478bd9Sstevel@tonic-gate.L15: 827c478bd9Sstevel@tonic-gate subcc SIZE,BYTES_PER_MOVE,SIZE 837c478bd9Sstevel@tonic-gate LD [FROM+SIZE],TEMP 847c478bd9Sstevel@tonic-gate bg .L15 857c478bd9Sstevel@tonic-gate ST TEMP,[TO+SIZE] /* (DELAY SLOT) */ 867c478bd9Sstevel@tonic-gate /* bump return address */ 877c478bd9Sstevel@tonic-gate add %i7,0x4,%i7 887c478bd9Sstevel@tonic-gate.LE12: 897c478bd9Sstevel@tonic-gate jmp %i7+8 907c478bd9Sstevel@tonic-gate restore 917c478bd9Sstevel@tonic-gate 927c478bd9Sstevel@tonic-gate#if STRET4 937c478bd9Sstevel@tonic-gate SET_SIZE(.stret4) 947c478bd9Sstevel@tonic-gate SET_SIZE(.stret8) 957c478bd9Sstevel@tonic-gate#endif 967c478bd9Sstevel@tonic-gate#if STRET2 977c478bd9Sstevel@tonic-gate SET_SIZE(.stret2) 987c478bd9Sstevel@tonic-gate#endif 997c478bd9Sstevel@tonic-gate#if STRET1 1007c478bd9Sstevel@tonic-gate SET_SIZE(.stret1) 1017c478bd9Sstevel@tonic-gate#endif 102