freebsd-skq/contrib/elftoolchain/libdwarf/dwarf_add_AT_const_value_string.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

127 lines
3.8 KiB
Groff

.\" Copyright (c) 2011 Kai Wang
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.\" $Id: dwarf_add_AT_const_value_string.3 3640 2018-10-14 14:09:13Z jkoshy $
.\"
.Dd September 4, 2011
.Dt DWARF_ADD_AT_CONST_VALUE_STRING 3
.Os
.Sh NAME
.Nm dwarf_add_AT_const_value_signedint ,
.Nm dwarf_add_AT_const_value_string ,
.Nm dwarf_add_AT_const_value_unsignedint
.Nd create and attach a DW_AT_const_value attribute
.Sh LIBRARY
.Lb libdwarf
.Sh SYNOPSIS
.In libdwarf.h
.Ft Dwarf_P_Attribute
.Fo dwarf_add_AT_const_value_signedint
.Fa "Dwarf_P_Die die"
.Fa "Dwarf_Signed value"
.Fa "Dwarf_Error *err"
.Fc
.Ft Dwarf_P_Attribute
.Fo dwarf_add_AT_const_value_string
.Fa "Dwarf_P_Die die"
.Fa "char *str"
.Fa "Dwarf_Error *err"
.Fc
.Ft Dwarf_P_Attribute
.Fo dwarf_add_AT_const_value_unsignedint
.Fa "Dwarf_P_Die die"
.Fa "Dwarf_Unsigned value"
.Fa "Dwarf_Error *err"
.Fc
.Sh DESCRIPTION
These functions create a
.Dv DW_AT_const_value
attribute descriptor and attach it to the debugging information entry
referenced by argument
.Ar die .
.Pp
Argument
.Ar die
should reference a debugging information entry allocated using
.Xr dwarf_new_die 3 .
.Pp
Function
.Fn dwarf_add_AT_const_value_signedint
creates a
.Dv DW_AT_const_value
attribute descriptor containing the signed value specified by argument
.Ar value .
The created attribute descriptor will have DWARF form
.Dv DW_FORM_sdata .
.Pp
Function
.Fn dwarf_add_AT_const_value_unsignedint
creates a
.Dv DW_AT_const_value
attribute descriptor containing the unsigned value specified by
argument
.Ar value .
The created attribute descriptor will have DWARF form
.Dv DW_FORM_udata .
.Pp
Function
.Fn dwarf_add_AT_const_value_string
creates a
.Dv DW_AT_const_value
attribute descriptor containing the string pointed to by the
NUL-terminated argument
.Ar str .
The created attribute descriptor will have DWARF form
.Dv DW_FORM_strp .
.Pp
If argument
.Ar err
is not NULL, it will be used by these functions to store error
information in case of an error.
.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 set 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 die
or
.Ar str
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_name 3 ,
.Xr dwarf_add_AT_signed_const 3 ,
.Xr dwarf_add_AT_string 3 ,
.Xr dwarf_add_AT_unsigned_const 3 ,
.Xr dwarf_new_die 3