diff options
Diffstat (limited to 'rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_info_for_all_regs.3')
| -rw-r--r-- | rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_info_for_all_regs.3 | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_info_for_all_regs.3 b/rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_info_for_all_regs.3 new file mode 100644 index 0000000..f55d3d6 --- /dev/null +++ b/rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_info_for_all_regs.3 @@ -0,0 +1,156 @@ +.\" Copyright (c) 2011 Kai Wang +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $Id: dwarf_get_fde_info_for_all_regs.3 3182 2015-04-10 16:08:10Z emaste $ +.\" +.Dd June 4, 2011 +.Os +.Dt DWARF_GET_FDE_INFO_FOR_ALL_REGS 3 +.Sh NAME +.Nm dwarf_get_fde_info_for_all_regs +.Nd retrieve register rule row +.Sh LIBRARY +.Lb libdwarf +.Sh SYNOPSIS +.In libdwarf.h +.Ft int +.Fo dwarf_get_fde_info_for_all_regs +.Fa "Dwarf_Fde fde" +.Fa "Dwarf_Addr pc" +.Fa "Dwarf_Regtable *reg_table" +.Fa "Dwarf_Addr *row_pc" +.Fa "Dwarf_Error *err" +.Fc +.Sh DESCRIPTION +Function +.Fn dwarf_get_fde_info_for_all_regs +retrieves a row from the register rule table associated with the given +FDE descriptor. +.Pp +Argument +.Ar fde +should reference a valid DWARF FDE descriptor. +.Pp +Argument +.Ar pc +should hold the program counter address to be used to locate the +desired table row. +.Pp +Argument +.Ar reg_table +should point to a +.Vt Dwarf_Regtable +descriptor which will hold the returned table row of register rules. +.Pp +Argument +.Ar row_pc +should point to a location which will be set to the lowest program +counter address associated with the table row. +.Pp +If argument +.Ar err +is not NULL, it will be used to store error information in case of an +error. +.Pp +The +.Vt Dwarf_Regtable +descriptor is defined in the header file +.In libdwarf.h : +.Bd -literal -offset indent +typedef struct { + struct { + Dwarf_Small dw_offset_relevant; + Dwarf_Half dw_regnum; + Dwarf_Addr dw_offset; + } rules[DW_REG_TABLE_SIZE]; +} Dwarf_Regtable; +.Ed +.Pp +For each of the register rules returned, +the +.Va dw_offset_relevant +field is set to 1 if the register rule has a offset value. +The +.Va dw_regnum +field is set to the register number associated with the regsiter rule. +The +.Va dw_offset +field is set to the offset value associated with the register rule. +.Pp +The number of register columns returned is either the constant +value +.Dv DW_REG_TABLE_SIZE as defined +in the header file +.In libdwarf.h , +or the value set by function +.Xr dwarf_set_frame_rule_table_size 3 , +whichever is smaller. +.Ss COMPATIBILITY +Function +.Fn dwarf_get_fde_info_for_all_regs +is deprecated since it only supports DWARF2 frame sections. +Applications should instead use function +.Xr dwarf_get_fde_info_for_all_regs3 3 +which supports both DWARF2 and DWARF3 frame sections. +.Sh RETURN VALUES +Function +.Fn dwarf_get_fde_info_for_all_regs +returns +.Dv DW_DLV_OK +when it succeeds. +In case of an error, it returns +.Dv DW_DLV_ERROR +and sets the argument +.Ar err . +.Sh ERRORS +Function +.Fn dwarf_get_fde_info_for_all_regs +can fail with: +.Bl -tag -width ".Bq Er DW_DLE_PC_NOT_IN_FDE_RANGE" +.It Bq Er DW_DLE_ARGUMENT +One of the arguments +.Ar fde , +.Ar reg_table +or +.Ar row_pc +was NULL. +.It Bq Er DW_DLE_PC_NOT_IN_FDE_RANGE +The program counter value provided in argument +.Ar pc +did not fall in the range covered by argument +.Ar fde . +.El +.Sh SEE ALSO +.Xr dwarf 3 , +.Xr dwarf_get_fde_at_pc 3 , +.Xr dwarf_get_fde_info_for_all_regs3 3 , +.Xr dwarf_get_fde_info_for_cfa_reg3 3 , +.Xr dwarf_get_fde_info_for_reg 3 , +.Xr dwarf_get_fde_info_for_reg3 3 , +.Xr dwarf_get_fde_n 3 , +.Xr dwarf_set_frame_cfa_value 3 , +.Xr dwarf_set_frame_rule_table_size 3 , +.Xr dwarf_set_frame_rule_initial_value 3 , +.Xr dwarf_set_frame_same_value 3 , +.Xr dwarf_set_frame_undefined_value 3 |