mirror of
https://github.com/freebsd/freebsd-src
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ae500c1ff8
Highlights: - Make sure that only TLS sections are sorted into TLS segment. - Fixed multiple errors in "Section to Segment mapping". - Man page updates - ar improvements - elfcopy: avoid filter_reloc uninitialized variable for rela - elfcopy: avoid stripping relocations from static binaries - readelf: avoid printing directory in front of absolute path - readelf: add NT_FREEBSD_FEATURE_CTL FreeBSD note type - test improvements NOTES: Some of these changes originated in FreeBSD and simply reduce diffs between contrib and vendor. ELF Tool Chain ar is not (currently) used in FreeBSD, and there are improvements in both FreeBSD and ELF Tool Chain ar that are not in the other. Sponsored by: The FreeBSD Foundation
150 lines
4.2 KiB
Groff
150 lines
4.2 KiB
Groff
.\" Copyright (c) 2011 Kai Wang
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $Id: dwarf_get_fde_range.3 3644 2018-10-15 19:55:01Z jkoshy $
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.\"
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.Dd May 22, 2011
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.Dt DWARF_GET_FDE_RANGE 3
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.Os
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.Sh NAME
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.Nm dwarf_get_fde_range
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.Nd retrieve range information from an FDE descriptor
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.Sh LIBRARY
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.Lb libdwarf
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.Sh SYNOPSIS
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.In libdwarf.h
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.Ft int
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.Fo dwarf_get_fde_range
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.Fa "Dwarf_Fde fde"
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.Fa "Dwarf_Addr *low_pc"
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.Fa "Dwarf_Unsigned *func_len"
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.Fa "Dwarf_Ptr *fde_bytes"
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.Fa "Dwarf_Unsigned *fde_byte_len"
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.Fa "Dwarf_Off *cie_offset"
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.Fa "Dwarf_Signed *cie_index"
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.Fa "Dwarf_Off *fde_offset"
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.Fa "Dwarf_Error *err"
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.Fc
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.Sh DESCRIPTION
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Function
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.Fn dwarf_get_fde_range
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retrieves range and offset information from a given FDE descriptor.
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.Pp
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Argument
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.Ar fde
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should reference a valid DWARF FDE descriptor.
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.Pp
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Argument
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.Ar low_pc
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should point to a location that will be set to the lowest
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program counter address covered by the FDE descriptor.
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.Pp
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Argument
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.Ar func_len
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should point to a location that will hold the length in bytes of
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the address range covered by the FDE descriptor.
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.Pp
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Argument
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.Ar fde_bytes
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should point to a location that will be set to a pointer to the
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content of the FDE descriptor itself.
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.Pp
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Argument
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.Ar fde_byte_len
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should point to a location that will hold the length in bytes of
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the FDE descriptor itself.
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.Pp
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Argument
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.Ar cie_offset
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should point to a location that will be set to the offset, relative to
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the DWARF
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.Dq ".debug_frame"
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section, of the CIE descriptor associated with the given FDE
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descriptor.
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.Pp
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Argument
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.Ar cie_index
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should point to a location that will hold the index of the CIE
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descriptor associated with the FDE descriptor.
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The returned value is a zero-based index into the array of CIE
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descriptors returned by a prior call to functions
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.Xr dwarf_get_fde_list 3
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or
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.Xr dwarf_get_fde_list_eh 3 .
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.Pp
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Argument
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.Ar fde_offset
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should point to a location that will be set to the offset, relative to
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the DWARF
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.Dq ".debug_frame"
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section, of the FDE descriptor.
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.Pp
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If argument
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.Ar err
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is not NULL, it will be used to store error information in case of an
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error.
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.Sh RETURN VALUES
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Function
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.Fn dwarf_get_fde_range
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returns
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.Dv DW_DLV_OK
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when it succeeds.
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In case of an error, it returns
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.Dv DW_DLV_ERROR
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and sets the argument
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.Ar err .
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.Sh ERRORS
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Function
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.Fn dwarf_get_fde_range
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can fail with:
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.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
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.It Bq Er DW_DLE_ARGUMENT
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One of the arguments
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.Ar fde ,
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.Ar low_pc ,
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.Ar func_len ,
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.Ar fde_bytes ,
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.Ar fde_byte_len ,
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.Ar cie_offset ,
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.Ar cie_index
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or
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.Ar fde_offset
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was NULL.
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.El
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.Sh SEE ALSO
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.Xr dwarf 3 ,
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.Xr dwarf_get_cie_index 3 ,
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.Xr dwarf_get_cie_info 3 ,
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.Xr dwarf_get_cie_of_fde 3 ,
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.Xr dwarf_get_fde_at_pc 3 ,
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.Xr dwarf_get_fde_info_for_all_regs 3 ,
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.Xr dwarf_get_fde_info_for_all_regs3 3 ,
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.Xr dwarf_get_fde_info_for_cfa_reg3 3 ,
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.Xr dwarf_get_fde_info_for_reg 3 ,
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.Xr dwarf_get_fde_info_for_reg3 3 ,
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.Xr dwarf_get_fde_instr_bytes 3 ,
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.Xr dwarf_get_fde_list 3 ,
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.Xr dwarf_get_fde_list_eh 3 ,
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.Xr dwarf_get_fde_n 3
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