1 | .\" Copyright (c) 2011 Kai Wang |
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2 | .\" All rights reserved. |
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3 | .\" |
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5 | .\" modification, are permitted provided that the following conditions |
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13 | .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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14 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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16 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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25 | .\" $Id: dwarf_add_frame_cie.3 2072 2011-10-27 03:26:49Z jkoshy $ |
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26 | .\" |
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27 | .Dd September 26, 2011 |
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28 | .Os |
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29 | .Dt DWARF_ADD_FRAME_CIE 3 |
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30 | .Sh NAME |
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31 | .Nm dwarf_add_frame_cie |
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32 | .Nd add a call frame common information entry to a DWARF producer instance |
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33 | .Sh LIBRARY |
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34 | .Lb libdwarf |
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35 | .Sh SYNOPSIS |
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36 | .In libdwarf.h |
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37 | .Ft "Dwarf_Unsigned" |
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38 | .Fo dwarf_add_frame_cie |
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39 | .Fa "Dwarf_P_Debug dbg" |
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40 | .Fa "char *augmenter" |
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41 | .Fa "Dwarf_Small caf" |
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42 | .Fa "Dwarf_Small daf" |
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43 | .Fa "Dwarf_Small ra" |
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44 | .Fa "Dwarf_Ptr initinst" |
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45 | .Fa "Dwarf_Unsigned initlen" |
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46 | .Fa "Dwarf_Error *err" |
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47 | .Fc |
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48 | .Sh DESCRIPTION |
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49 | Function |
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50 | .Fn dwarf_add_frame_cie |
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51 | adds a DWARF call frame common information entry (CIE) to a producer |
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52 | instance. |
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53 | .Pp |
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54 | Argument |
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55 | .Ar dbg |
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56 | should reference a DWARF producer instance allocated using |
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57 | .Xr dwarf_producer_init 3 |
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58 | or |
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59 | .Xr dwarf_producer_init_b 3 . |
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60 | .Pp |
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61 | Argument |
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62 | .Ar augmenter |
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63 | should point to a NUL-terminated augmentation string for the common |
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64 | information entry. |
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65 | .Pp |
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66 | Argument |
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67 | .Ar caf |
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68 | specifies the code alignment factor. |
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69 | .Pp |
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70 | Argument |
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71 | .Ar daf |
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72 | specifies the data alignment factor. |
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73 | .Pp |
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74 | Argument |
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75 | .Ar ra |
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76 | specifies the column number used for the return address register. |
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77 | .Pp |
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78 | Argument |
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79 | .Ar initinst |
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80 | should point to a byte stream containing the initial instructions |
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81 | for the common information entry. |
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82 | .Pp |
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83 | Argument |
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84 | .Ar initlen |
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85 | should hold the length in bytes of the byte stream pointed to by |
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86 | argument |
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87 | .Ar initinst . |
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88 | .Pp |
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89 | If argument |
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90 | .Ar err |
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91 | is not NULL, it will be used to store error information in case of an |
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92 | error. |
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93 | .Sh RETURN VALUES |
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94 | On success, function |
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95 | .Fn dwarf_add_frame_cie |
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96 | returns the index value of the created common information entry. |
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97 | In case of an error, function |
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98 | .Fn dwarf_add_frame_cie |
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99 | returns |
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100 | .Dv DW_DLV_NOCOUNT |
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101 | and sets the argument |
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102 | .Ar err . |
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103 | .Sh ERRORS |
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104 | Function |
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105 | .Fn dwarf_add_frame_cie |
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106 | can fail with: |
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107 | .Bl -tag -width ".Bq Er DW_DLE_ARGUMENT" |
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108 | .It Bq Er DW_DLE_ARGUMENT |
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109 | Argument |
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110 | .Ar dbg |
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111 | was NULL. |
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112 | .It Bq Er DW_DLE_MEMORY |
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113 | An out of memory condition was encountered during the execution of the |
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114 | function. |
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115 | .El |
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116 | .Sh SEE ALSO |
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117 | .Xr dwarf 3 , |
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118 | .Xr dwarf_add_fde_inst 3 , |
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119 | .Xr dwarf_add_frame_fde 3 , |
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120 | .Xr dwarf_add_frame_fde_b 3 , |
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121 | .Xr dwarf_fde_cfa_offset 3 , |
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122 | .Xr dwarf_new_fde 3 , |
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123 | .Xr dwarf_producer_init 3 , |
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124 | .Xr dwarf_producer_init_b 3 |
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