projects / unix-history / blame
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1 | /*- |
| 2 | * Copyright (c) 1986 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * Computer Consoles Inc. | |
| 7 | * | |
| c0567266 KB |
8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions | |
| 10 | * are met: | |
| 11 | * 1. Redistributions of source code must retain the above copyright | |
| 12 | * notice, this list of conditions and the following disclaimer. | |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer in the | |
| 15 | * documentation and/or other materials provided with the distribution. | |
| 16 | * 3. All advertising materials mentioning features or use of this software | |
| 17 | * must display the following acknowledgement: | |
| 18 | * This product includes software developed by the University of | |
| 19 | * California, Berkeley and its contributors. | |
| 20 | * 4. Neither the name of the University nor the names of its contributors | |
| 21 | * may be used to endorse or promote products derived from this software | |
| 22 | * without specific prior written permission. | |
| 23 | * | |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 34 | * SUCH DAMAGE. | |
| ad787160 C |
35 | * |
| 36 | * @(#)Ashrl.c 7.1 (Berkeley) 12/6/90 | |
| 7c27088c | 37 | */ |
| 4173a5b9 | 38 | |
| 6499767c | 39 | #include "align.h" |
| 4173a5b9 SL |
40 | shrl(infop) process_info *infop; |
| 41 | /* | |
| 42 | /* Shift logical right (longword). | |
| 43 | /* | |
| 44 | /*******************************/ | |
| 45 | { | |
| 46 | register long Register_12; /* Has to be first reg ! */ | |
| 47 | register long Register_11; | |
| 48 | register long Register_10; | |
| 49 | ||
| 50 | Register_12 = operand(infop,0)->data; | |
| 51 | Register_11 = operand(infop,1)->data; | |
| 52 | Register_10=psl; | |
| 53 | Set_psl(r10); /* restore the user psl */ | |
| 54 | asm (" shrl r12,r11,r10"); | |
| 55 | asm (" movpsl r12"); | |
| 56 | New_cc (Register_12); | |
| 57 | write_back (infop, Register_10, operand(infop,2)); | |
| 58 | } |