freebsd-dev/contrib/elftoolchain/libdwarf/dwarf_get_relocation_info_count.3
Ed Maste ae500c1ff8 Update to ELF Tool Chain r3668
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
2019-01-10 14:35:23 +00:00

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3.4 KiB
Groff

.\" Copyright (c) 2011 Kai Wang
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.\" $Id: dwarf_get_relocation_info_count.3 3640 2018-10-14 14:09:13Z jkoshy $
.\"
.Dd September 3, 2011
.Dt DWARF_GET_RELOCATION_INFO_COUNT 3
.Os
.Sh NAME
.Nm dwarf_get_relocation_info_count
.Nd return the number of relocation arrays
.Sh LIBRARY
.Lb libdwarf
.Sh SYNOPSIS
.In libdwarf.h
.Ft int
.Fo dwarf_get_relocation_info_count
.Fa "Dwarf_P_Debug dbg"
.Fa "Dwarf_Unsigned *reloc_cnt"
.Fa "int *drd_buffer_version"
.Fa "Dwarf_Error *err"
.Fc
.Sh DESCRIPTION
Function
.Fn dwarf_get_relocation_info_count
retrieves the total number of relocation arrays generated by a prior
call to
.Xr dwarf_transform_to_disk_form 3 .
.Pp
Argument
.Ar dbg
should reference a DWARF producer instance allocated using
.Xr dwarf_producer_init 3
or
.Xr dwarf_producer_init_b 3 .
The
.Dv DW_DLC_SYMBOLIC_RELOCATIONS
flag should have been set on the producer instance.
.Pp
Argument
.Ar reloc_cnt
should point to a location which will be set to the total number of
relocation arrays generated.
.Pp
Argument
.Ar drd_buffer_version
should point to a location which will be set to the version number
of the relocation structures returned (see the symbol
.Dv DWARF_DRD_BUFFER_VERSION ,
defined in the header file
.In libdwarf.h ) .
.Pp
If argument
.Ar err
is not NULL, it will be used to store error information in case
of an error.
.Sh RETURN VALUES
On success, function
.Fn dwarf_get_relocation_info_count
returns
.Dv DW_DLV_OK .
It returns
.Dv DW_DLV_NO_ENTRY
if the
.Dv DW_DLC_SYMBOLIC_RELOCATIONS
flag is not set on the producer instance.
In case of an error, function
.Fn dwarf_get_relocation_info_count
returns
.Dv DW_DLV_ERROR
and sets the argument
.Ar err .
.Sh ERRORS
Function
.Fn dwarf_get_relocation_info_count
can fail with:
.Bl -tag -width ".Bq Er DW_DLE_NO_ENTRY"
.It Bq Er DW_DLE_ARGUMENT
One of the arguments
.Ar dbg ,
.Ar reloc_cnt
or
.Ar drd_buffer_version
was NULL.
.It Bq Er DW_DLE_NO_ENTRY
The
.Dv DW_DLC_SYMBOLIC_RELOCATIONS
flag was not set.
.El
.Sh SEE ALSO
.Xr dwarf 3 ,
.Xr dwarf_get_relocation_info 3 ,
.Xr dwarf_producer_init 3 ,
.Xr dwarf_producer_init_b 3 ,
.Xr dwarf_transform_to_disk_form 3