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Diffstat (limited to 'rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_range.3')
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1 files changed, 149 insertions, 0 deletions
diff --git a/rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_range.3 b/rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_range.3 new file mode 100644 index 0000000..1ea708c --- /dev/null +++ b/rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_range.3 @@ -0,0 +1,149 @@ +.\" Copyright (c) 2011 Kai Wang +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $Id: dwarf_get_fde_range.3 2071 2011-10-27 03:20:00Z jkoshy $ +.\" +.Dd May 22, 2011 +.Os +.Dt DWARF_GET_FDE_RANGE 3 +.Sh NAME +.Nm dwarf_get_fde_range +.Nd retrieve range information from an FDE descriptor +.Sh LIBRARY +.Lb libdwarf +.Sh SYNOPSIS +.In libdwarf.h +.Ft int +.Fo dwarf_get_fde_range +.Fa "Dwarf_Fde fde" +.Fa "Dwarf_Addr *low_pc" +.Fa "Dwarf_Unsigned *func_len" +.Fa "Dwarf_Ptr *fde_bytes" +.Fa "Dwarf_Unsigned *fde_byte_len" +.Fa "Dwarf_Off *cie_offset" +.Fa "Dwarf_Signed *cie_index" +.Fa "Dwarf_Off *fde_offset" +.Fa "Dwarf_Error *err" +.Fc +.Sh DESCRIPTION +Function +.Fn dwarf_get_fde_range +retrieves range and offset information from a given FDE descriptor. +.Pp +Argument +.Ar fde +should reference a valid DWARF FDE descriptor. +.Pp +Argument +.Ar low_pc +should point to a location that will be set to the lowest +program counter address covered by the FDE descriptor. +.Pp +Argument +.Ar func_len +should point to a location that will hold the length in bytes of +the address range covered by the FDE descriptor. +.Pp +Argument +.Ar fde_bytes +should point to a location that will be set to a pointer to the +content of the FDE descriptor itself. +.Pp +Argument +.Ar fde_byte_len +should point to a location that will hold the length in bytes of +the FDE descriptor itself. +.Pp +Argument +.Ar cie_offset +should point to a location that will be set to the offset, relative to +the DWARF +.Dq ".debug_frame" +section, of the CIE descriptor associated with the given FDE +descriptor. +.Pp +Argument +.Ar cie_index +should point to a location that will hold the index of the CIE +descriptor associated with the FDE descriptor. +The returned value is a zero-based index into the array of CIE +descriptors returned by a prior call to functions +.Xr dwarf_get_fde_list 3 +or +.Xr dwarf_get_fde_list_eh 3 . +.Pp +Argument +.Ar fde_offset +should point to a location that will be set to the offset, relative to +the DWARF +.Dq ".debug_frame" +section, of the FDE descriptor. +.Pp +If argument +.Ar err +is not NULL, it will be used to store error information in case of an +error. +.Sh RETURN VALUES +Function +.Fn dwarf_get_fde_range +returns +.Dv DW_DLV_OK +when it succeeds. +In case of an error, it returns +.Dv DW_DLV_ERROR +and sets the argument +.Ar err . +.Sh ERRORS +Function +.Fn dwarf_get_fde_range +can fail with: +.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT" +.It Bq Er DW_DLE_ARGUMENT +One of the arguments +.Ar fde , +.Ar low_pc , +.Ar func_len , +.Ar fde_bytes , +.Ar fde_byte_len , +.Ar cie_offset , +.Ar cie_index +or +.Ar fde_offset +was NULL. +.El +.Sh SEE ALSO +.Xr dwarf 3 , +.Xr dwarf_get_cie_info 3 , +.Xr dwarf_get_cie_index 3 , +.Xr dwarf_get_cie_of_fde , +.Xr dwarf_get_fde_at_pc 3 , +.Xr dwarf_get_fde_info_for_all_regs 3 , +.Xr dwarf_get_fde_info_for_all_regs3 3 , +.Xr dwarf_get_fde_info_for_cfa_reg3 3 , +.Xr dwarf_get_fde_info_for_reg 3 , +.Xr dwarf_get_fde_info_for_reg3 3 , +.Xr dwarf_get_fde_instr_bytes 3 , +.Xr dwarf_get_fde_list 3 , +.Xr dwarf_get_fde_list_eh 3 , +.Xr dwarf_get_fde_n 3 |