Reading an aranges section

Example reading .debug_aranges.

An example accessing the .debug_aranges section. Looking all the aranges entries. This example is not searching for anything.

Parameters

dbg	The Dwarf_Debug of interest.
dw_error	On error dw_error is set to point to the error details.

Returns

DW_DLV_OK etc.

*/
static void cleanupbadarange(Dwarf_Debug dbg,
    Dwarf_Arange *arange, Dwarf_Signed i, Dwarf_Signed count)
{
    Dwarf_Signed k = i;
 
    for ( ; k < count; ++k) {
        dwarf_dealloc(dbg,arange[k] , DW_DLA_ARANGE);
        arange[k] = 0;
    }
}
int exampleu(Dwarf_Debug dbg,Dwarf_Error *error)
{
    /*  It is a historical accident that the count is signed.
        No negative count is possible. */
    Dwarf_Signed  count = 0;
    Dwarf_Arange *arange = 0;
    int           res = 0;
 
    res = dwarf_get_aranges(dbg, &arange,&count, error);
    if (res == DW_DLV_OK) {
        Dwarf_Signed i = 0;
 
        for (i = 0; i < count; ++i) {
            Dwarf_Arange ara = arange[i];
            Dwarf_Unsigned segment = 0;
            Dwarf_Unsigned segment_entry_size = 0;
            Dwarf_Addr start = 0;
            Dwarf_Unsigned length = 0;
            Dwarf_Off  cu_die_offset = 0;
 
            res = dwarf_get_arange_info_b(ara,
                &segment,&segment_entry_size,
                &start, &length,
                &cu_die_offset,error);
            if (res != DW_DLV_OK) {
                cleanupbadarange(dbg,arange,i,count);
                dwarf_dealloc(dbg, arange, DW_DLA_LIST);
                return res;
            }
            /*  Do something with ara */
            dwarf_dealloc(dbg, ara, DW_DLA_ARANGE);
            arange[i] = 0;
        }
        dwarf_dealloc(dbg, arange, DW_DLA_LIST);
    }
    return res;
}