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Diffstat (limited to 'rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_at_pc.3')
-rw-r--r-- | rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_at_pc.3 | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_at_pc.3 b/rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_at_pc.3 new file mode 100644 index 0000000..8aa36ec --- /dev/null +++ b/rtemstoolkit/elftoolchain/libdwarf/dwarf_get_fde_at_pc.3 @@ -0,0 +1,125 @@ +.\" 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_at_pc.3 2071 2011-10-27 03:20:00Z jkoshy $ +.\" +.Dd May 22, 2011 +.Os +.Dt DWARF_GET_FDE_AT_PC 3 +.Sh NAME +.Nm dwarf_get_fde_at_pc +.Nd retrieve the FDE descriptor for an address +.Sh LIBRARY +.Lb libdwarf +.Sh SYNOPSIS +.In libdwarf.h +.Ft int +.Fo dwarf_get_fde_at_pc +.Fa "Dwarf_Fde *fdelist" +.Fa "Dwarf_Addr pc" +.Fa "Dwarf_Fde *ret_fde" +.Fa "Dwarf_Addr *lopc" +.Fa "Dwarf_Addr *hipc" +.Fa "Dwarf_Error *err" +.Fc +.Sh DESCRIPTION +Function +.Fn dwarf_get_fde_at_pc +searches the provided array of DWARF FDE descriptors for a descriptor +covering a given program counter address. +.Pp +Argument +.Ar fdelist +should point to an array of FDE descriptors, as returned by the functions +.Xr dwarf_get_fde_list 3 +or +.Xr dwarf_get_fde_list_eh 3 . +.Pp +Argument +.Ar pc +should contain the program counter address being looked up. +.Pp +Argument +.Ar ret_fde +should point to a location that will hold the returned FDE descriptor. +.Pp +Argument +.Ar lopc +should point to a location that will be set to the lowest address +covered by the returned FDE descriptor. +.Pp +Argument +.Ar hipc +should point to a location that will be set to the highest address +covered by the returned FDE descriptor. +.Pp +If argument +.Ar err +is not NULL, it will be used to store error information in case of an +error. +.Sh RETURN VALUES +Function +.Fn dwarf_get_fde_at_pc +returns +.Dv DW_DLV_OK +when it succeeds. +It returns +.Dv DW_DLV_NO_ENTRY +if a FDE descriptor that covers the address specified by argument +.Ar pc +is not found. +In case of an error, it returns +.Dv DW_DLV_ERROR +and sets the argument +.Ar err . +.Sh ERRORS +Function +.Fn dwarf_get_fde_at_pc +can fail with: +.Bl -tag -width ".Bq Er DW_DLE_NO_ENTRY" +.It Bq Er DW_DLE_ARGUMENT +One of the arguments +.Va fdelist , +.Va ret_fde , +.Va lopc , +or +.Va hipc +was NULL. +.It Bq Er DW_DLE_NO_ENTRY +These was no FDE descriptor covering the address specified by argument +.Ar pc . +.El +.Sh SEE ALSO +.Xr dwarf 3 , +.Xr dwarf_get_cie_of_fde 3 , +.Xr dwarf_get_fde_info_for_all_regs 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_instr_bytes 3 , +.Xr dwarf_get_fde_list 3 , +.Xr dwarf_get_fde_list_eh 3 , +.Xr dwarf_get_fde_n 3 , +.Xr dwarf_get_fde_range 3 |