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annotate packages/language/c/libc/current/cdl/string.cdl @ 76:435cced73e2f ecos-v1_3_1-release

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eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
author jlarmour
date Tue, 28 Mar 2000 14:10:45 +0000
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435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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1 # ====================================================================
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2 #
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3 # string.cdl
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4 #
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5 # C library string related configuration data
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6 #
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7 # ====================================================================
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8 #####COPYRIGHTBEGIN####
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9 #
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10 # -------------------------------------------
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11 # The contents of this file are subject to the Red Hat eCos Public License
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12 # Version 1.1 (the "License"); you may not use this file except in
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13 # compliance with the License. You may obtain a copy of the License at
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14 # http://www.redhat.com/
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15 #
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16 # Software distributed under the License is distributed on an "AS IS"
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17 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 # License for the specific language governing rights and limitations under
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19 # the License.
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20 #
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21 # The Original Code is eCos - Embedded Configurable Operating System,
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22 # released September 30, 1998.
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23 #
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24 # The Initial Developer of the Original Code is Red Hat.
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25 # Portions created by Red Hat are
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26 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 # All Rights Reserved.
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28 # -------------------------------------------
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29 #
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30 #####COPYRIGHTEND####
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31 # ====================================================================
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32 ######DESCRIPTIONBEGIN####
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33 #
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34 # Author(s): jskov
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35 # Original data: jlarmour
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36 # Contributors:
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37 # Date: 1999-07-06
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38 #
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39 #####DESCRIPTIONEND####
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40 #
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41 # ====================================================================
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42
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43 cdl_option CYGIMP_LIBC_STRING_INLINES {
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44 display "Inline versions of <string.h> functions"
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45 default_value 1
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46 description "
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47 This option chooses whether some of the
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48 particularly simple string functions from
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49 <string.h> are available as inline
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50 functions. This may improve performance, and as
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51 the functions are small, may even improve code
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52 size."
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53 }
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54
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55 cdl_option CYGIMP_LIBC_STRING_PREFER_SMALL_TO_FAST {
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56 display "Optimize string functions for code size"
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57 flavor bool
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58 default_value 0
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59 description "
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60 This option tries to reduce string function
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61 code size at the expense of execution speed. The
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62 same effect can be produced if the code is
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63 compiled with the -Os option to the compiler."
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64 }
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65
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66 cdl_component CYGPKG_LIBC_STRING_STRTOK {
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67 display "strtok"
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68 flavor none
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69 description "
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70 These options control the behaviour of the
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71 strtok() and strtok_r() string tokenization
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72 functions."
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73
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74 cdl_option CYGSEM_LIBC_PER_THREAD_STRTOK {
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75 display "Per-thread strtok()"
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76 requires CYGVAR_KERNEL_THREADS_DATA
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77 default_value 0
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78 description "
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79 This option controls whether the string function
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80 strtok() has its state recorded on a per-thread
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81 basis rather than global. If this option is
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82 disabled, some per-thread space can be saved.
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83 Note there is also a POSIX-standard strtok_r()
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84 function to achieve a similar effect with user
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85 support. Enabling this option will use one slot
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86 of kernel per-thread data. You should ensure you
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87 have enough slots configured for all your
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88 per-thread data."
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89 }
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90
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91 cdl_option CYGNUM_LIBC_STRTOK_TRACE_LEVEL {
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92 display "Tracing level"
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93 flavor data
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94 legal_values 0 to 1
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95 default_value 0
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96 description "
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97 Trace verbosity level for debugging the <string.h>
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98 functions strtok() and strtok_r(). Increase this
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99 value to get additional trace output."
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100 }
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101 }