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
157 lines
4.4 KiB
Groff
157 lines
4.4 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_info_for_all_regs.3 3644 2018-10-15 19:55:01Z jkoshy $
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.\"
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.Dd June 4, 2011
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.Dt DWARF_GET_FDE_INFO_FOR_ALL_REGS 3
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.Os
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.Sh NAME
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.Nm dwarf_get_fde_info_for_all_regs
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.Nd retrieve register rule row
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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_info_for_all_regs
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.Fa "Dwarf_Fde fde"
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.Fa "Dwarf_Addr pc"
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.Fa "Dwarf_Regtable *reg_table"
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.Fa "Dwarf_Addr *row_pc"
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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_info_for_all_regs
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retrieves a row from the register rule table associated with the given
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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 pc
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should hold the program counter address to be used to locate the
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desired table row.
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.Pp
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Argument
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.Ar reg_table
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should point to a
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.Vt Dwarf_Regtable
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descriptor which will hold the returned table row of register rules.
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.Pp
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Argument
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.Ar row_pc
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should point to a location which will be set to the lowest program
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counter address associated with the table row.
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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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.Pp
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The
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.Vt Dwarf_Regtable
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descriptor is defined in the header file
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.In libdwarf.h :
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.Bd -literal -offset indent
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typedef struct {
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struct {
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Dwarf_Small dw_offset_relevant;
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Dwarf_Half dw_regnum;
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Dwarf_Addr dw_offset;
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} rules[DW_REG_TABLE_SIZE];
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} Dwarf_Regtable;
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.Ed
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.Pp
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For each of the register rules returned,
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the
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.Va dw_offset_relevant
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field is set to 1 if the register rule has a offset value.
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The
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.Va dw_regnum
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field is set to the register number associated with the regsiter rule.
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The
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.Va dw_offset
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field is set to the offset value associated with the register rule.
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.Pp
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The number of register columns returned is either the constant
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value
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.Dv DW_REG_TABLE_SIZE as defined
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in the header file
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.In libdwarf.h ,
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or the value set by function
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.Xr dwarf_set_frame_rule_table_size 3 ,
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whichever is smaller.
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.Ss COMPATIBILITY
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Function
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.Fn dwarf_get_fde_info_for_all_regs
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is deprecated since it only supports DWARF2 frame sections.
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Applications should instead use function
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.Xr dwarf_get_fde_info_for_all_regs3 3
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which supports both DWARF2 and DWARF3 frame sections.
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.Sh RETURN VALUES
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Function
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.Fn dwarf_get_fde_info_for_all_regs
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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_info_for_all_regs
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can fail with:
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.Bl -tag -width ".Bq Er DW_DLE_PC_NOT_IN_FDE_RANGE"
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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 reg_table
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or
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.Ar row_pc
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was NULL.
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.It Bq Er DW_DLE_PC_NOT_IN_FDE_RANGE
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The program counter value provided in argument
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.Ar pc
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did not fall in the range covered by argument
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.Ar fde .
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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_fde_at_pc 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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.Xr dwarf_set_frame_cfa_value 3 ,
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.Xr dwarf_set_frame_rule_initial_value 3 ,
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.Xr dwarf_set_frame_rule_table_size 3 ,
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.Xr dwarf_set_frame_same_value 3 ,
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.Xr dwarf_set_frame_undefined_value 3
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