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
141 lines
4.1 KiB
Groff
141 lines
4.1 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_set_frame_cfa_value.3 3640 2018-10-14 14:09:13Z jkoshy $
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.\"
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.Dd June 18, 2011
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.Dt DWARF_SET_FRAME_CFA_VALUE 3
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.Os
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.Sh NAME
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.Nm dwarf_set_frame_cfa_value ,
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.Nm dwarf_set_frame_rule_initial_value ,
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.Nm dwarf_set_frame_rule_table_size ,
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.Nm dwarf_set_frame_same_value ,
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.Nm dwarf_set_frame_undefined_value
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.Nd set internal register rule table parameters
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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 Dwarf_Half
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.Fo dwarf_set_frame_cfa_value
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.Fa "Dwarf_Debug dbg"
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.Fa "Dwarf_Half value"
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.Fc
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.Ft Dwarf_Half
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.Fo dwarf_set_frame_rule_initial_value
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.Fa "Dwarf_Debug dbg"
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.Fa "Dwarf_Half value"
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.Fc
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.Ft Dwarf_Half
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.Fo dwarf_set_frame_rule_table_size
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.Fa "Dwarf_Debug dbg"
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.Fa "Dwarf_Half value"
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.Fc
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.Ft Dwarf_Half
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.Fo dwarf_set_frame_same_value
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.Fa "Dwarf_Debug dbg"
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.Fa "Dwarf_Half value"
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.Fc
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.Ft Dwarf_Half
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.Fo dwarf_set_frame_undefined_value
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.Fa "Dwarf_Debug dbg"
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.Fa "Dwarf_Half value"
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.Fc
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.Sh DESCRIPTION
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These functions set the parameters of the internal register
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rule table.
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.Pp
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Argument
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.Ar dbg
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should reference a DWARF debug context allocated using
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.Xr dwarf_init 3 .
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.Pp
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Argument
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.Ar value
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should hold the parameter value to set.
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.Pp
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Function
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.Fn dwarf_set_frame_cfa_value
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sets the column number for the CFA register rule in the internal
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register rule table.
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The constant
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.Dv DW_FRAME_CFA_COL
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is the default CFA register column number for DWARF2-only
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interfaces, and the constant
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.Dv DW_FRAME_CFA_COL3
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is the default CFA column number for DWARF3-compatible interfaces.
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.Pp
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Function
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.Fn dwarf_set_frame_rule_initial_value
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sets the initial value of the register rules in the internal register
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rule table.
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The default initial value is the constant
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.Dv DW_FRAME_REG_INITIAL_VALUE ,
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defined in the header file
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.In libdwarf.h .
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.Pp
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Function
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.Fn dwarf_set_frame_rule_table_size
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sets the maxmium number of columns of the internal register rule table.
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Argument
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.Ar value
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should be at least as large as the number of real registers in the ABI.
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.Pp
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Function
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.Fn dwarf_set_frame_same_value
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sets the register number representing the
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.Dq "same value"
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register rule.
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The default register number for the
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.Dq "same value"
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rule is the constant
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.Dv DW_FRAME_SAME_VAL ,
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defined in the header file
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.In libdwarf.h .
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.Pp
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Function
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.Fn dwarf_set_frame_undefined_value
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sets the register number representing the
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.Dq undefined
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register rule.
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The default register number for the
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.Dq undefined
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rule is the constant
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.Dv DW_FRAME_UNDEFINED_VAL ,
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defined in the header file
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.In libdwarf.h .
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.Sh RETURN VALUES
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These functions return the previous value of the parameter being
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set.
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.Sh SEE ALSO
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.Xr dwarf 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_n 3
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