Last change
on this file since 652 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
File size:
1.4 KB
|
Rev | Line | |
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[444] | 1 | /* mc68ec.c -- Low level support for the Motorola mc68ec0x0 board. |
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| 2 | * Written by rob@cygnus.com (Rob Savoye) |
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| 3 | * |
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| 4 | * Copyright (c) 1995 Cygnus Support |
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| 5 | * |
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| 6 | * The authors hereby grant permission to use, copy, modify, distribute, |
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| 7 | * and license this software and its documentation for any purpose, provided |
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| 8 | * that existing copyright notices are retained in all copies and that this |
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| 9 | * notice is included verbatim in any distributions. No written agreement, |
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| 10 | * license, or royalty fee is required for any of the authorized uses. |
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| 11 | * Modifications to this software may be copyrighted by their authors |
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| 12 | * and need not follow the licensing terms described here, provided that |
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| 13 | * the new terms are clearly indicated on the first page of each file where |
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| 14 | * they apply. |
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| 15 | */ |
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| 16 | #include <sys/types.h> |
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| 17 | #include <sys/stat.h> |
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| 18 | #include <_ansi.h> |
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| 19 | #include <errno.h> |
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| 20 | #include "leds.h" |
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| 21 | |
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| 22 | /* |
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| 23 | * _exit -- exit the running program. We just cause an exception |
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| 24 | * which makes the program return to the boot monitor |
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| 25 | * prompt. It can be restarted from there. |
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| 26 | */ |
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| 27 | void |
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| 28 | _exit (int_status) |
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| 29 | { |
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| 30 | /* Use `i' constraint to get proper immediate-operand syntax for |
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| 31 | target assembler configuration. */ |
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| 32 | asm ("trap %0" : : "i" (0)); /* seems to be a harmless vector number */ |
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| 33 | } |
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| 34 | |
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| 35 | /* |
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| 36 | * delay -- delay execution. This is an ugly hack. It should |
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| 37 | * use the timer, but I'm waiting for docs. (sigh) |
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| 38 | */ |
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| 39 | void |
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| 40 | delay (int num) |
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| 41 | { |
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| 42 | while (num--) |
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| 43 | { |
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| 44 | asm ("nop"); |
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| 45 | } |
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| 46 | } |
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