freebsd-skq/contrib/elftoolchain/libdwarf/dwarf_add_AT_targ_address.3
emaste b54d7a9715 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

138 lines
4.0 KiB
Groff

.\" Copyright (c) 2011 Kai Wang
.\" All rights reserved.
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" $Id: dwarf_add_AT_targ_address.3 3640 2018-10-14 14:09:13Z jkoshy $
.\"
.Dd September 4, 2011
.Dt DWARF_ADD_AT_TARG_ADDRESS 3
.Os
.Sh NAME
.Nm dwarf_add_AT_targ_address ,
.Nm dwarf_add_AT_targ_address_b
.Nd create and attach address class attributes
.Sh LIBRARY
.Lb libdwarf
.Sh SYNOPSIS
.In libdwarf.h
.Ft Dwarf_P_Attribute
.Fo dwarf_add_AT_targ_address
.Fa "Dwarf_P_Debug dbg"
.Fa "Dwarf_P_Die die"
.Fa "Dwarf_Half attr"
.Fa "Dwarf_Unsigned pc_value"
.Fa "Dwarf_Signed sym_index"
.Fa "Dwarf_Error *err"
.Fc
.Ft Dwarf_P_Attribute
.Fo dwarf_add_AT_targ_address_b
.Fa "Dwarf_P_Debug dbg"
.Fa "Dwarf_P_Die die"
.Fa "Dwarf_Half attr"
.Fa "Dwarf_Unsigned pc_value"
.Fa "Dwarf_Unsigned sym_index"
.Fa "Dwarf_Error *err"
.Fc
.Sh DESCRIPTION
Function
.Fn dwarf_add_AT_targ_address_b
creates an attribute descriptor belonging to the
.Sq address
class and attaches it to the debugging information entry referenced by
argument
.Ar die .
.Pp
The created attribute descriptor will have DWARF form
.Dv DW_FORM_addr .
If flag
.Dv DW_DLC_SIZE_64
is set on the producer instance, the attribute value will be 8 bytes
in size.
Otherwise the attribute value will be 4 bytes in size.
.Pp
Argument
.Ar dbg
should reference a DWARF producer instance allocated using
.Xr dwarf_producer_init 3
or
.Xr dwarf_producer_init_b 3 .
.Pp
Argument
.Ar die
should reference a debugging information entry allocated using
.Xr dwarf_new_die 3 .
.Pp
Argument
.Ar attr
should specify the attribute code of the created attribute descriptor.
.Pp
Argument
.Ar pc_value
should hold a relocatable address value which will become the value of
the created attribute descriptor.
.Pp
Argument
.Ar sym_index
should specify the ELF symbol index of the symbol to be used for
relocating the address value.
.Pp
If argument
.Ar err
is not NULL, it will be used to store error information in case
of an error.
.Pp
Function
.Fn dwarf_add_AT_targ_address
is deprecated.
It is similar to function
.Fn dwarf_add_AT_targ_address_b
except that it cannot handle all possible symbol index values.
.Sh RETURN VALUES
On success, these functions return the created attribute descriptor.
In case of an error, these functions return
.Dv DW_DLV_BADADDR
and sets the argument
.Ar err .
.Sh ERRORS
These functions can fail with:
.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
.It Bq Er DW_DLE_ARGUMENT
Either of the arguments
.Ar dbg
or
.Ar die
was NULL.
.It Bq Er DW_DLE_MEMORY
An out of memory condition was encountered during execution.
.El
.Sh SEE ALSO
.Xr dwarf 3 ,
.Xr dwarf_add_AT_const_value_unsignedint 3 ,
.Xr dwarf_add_AT_dataref 3 ,
.Xr dwarf_add_AT_ref_address 3 ,
.Xr dwarf_add_AT_signed_const 3 ,
.Xr dwarf_add_AT_unsigned_const 3 ,
.Xr dwarf_new_die 3 ,
.Xr dwarf_producer_init 3 ,
.Xr dwarf_producer_init_b 3