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DWARF_GET_FDE_INFO_FOR_ALL_REGS(3)                    Library Functions Manual

NAME
     dwarf_get_fde_info_for_all_regs - retrieve register rule row

LIBRARY
     DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS
     #include <libdwarf.h>

     int
     dwarf_get_fde_info_for_all_regs(Dwarf_Fde fde, Dwarf_Addr pc,
         Dwarf_Regtable *reg_table, Dwarf_Addr *row_pc, Dwarf_Error *err);

DESCRIPTION
     Function dwarf_get_fde_info_for_all_regs() retrieves a row from the
     register rule table associated with the given FDE descriptor.

     Argument fde should reference a valid DWARF FDE descriptor.

     Argument pc should hold the program counter address to be used to locate
     the desired table row.

     Argument reg_table should point to a Dwarf_Regtable descriptor which will
     hold the returned table row of register rules.

     Argument row_pc should point to a location which will be set to the
     lowest program counter address associated with the table row.

     If argument err is not NULL, it will be used to store error information
     in case of an error.

     The Dwarf_Regtable descriptor is defined in the header file <libdwarf.h>:

           typedef struct {
                   struct {
                           Dwarf_Small     dw_offset_relevant;
                           Dwarf_Half      dw_regnum;
                           Dwarf_Addr      dw_offset;
                   } rules[DW_REG_TABLE_SIZE];
           } Dwarf_Regtable;

     For each of the register rules returned, the dw_offset_relevant field is
     set to 1 if the register rule has a offset value.  The dw_regnum field is
     set to the register number associated with the regsiter rule.  The
     dw_offset field is set to the offset value associated with the register
     rule.

     The number of register columns returned is either the constant value
     DW_REG_TABLE_SIZE as defined in the header file <libdwarf.h>, or the
     value set by function dwarf_set_frame_rule_table_size(3), whichever is
     smaller.

   COMPATIBILITY
     Function dwarf_get_fde_info_for_all_regs() is deprecated since it only
     supports DWARF2 frame sections.  Applications should instead use function
     dwarf_get_fde_info_for_all_regs3(3) which supports both DWARF2 and DWARF3
     frame sections.

RETURN VALUES
     Function dwarf_get_fde_info_for_all_regs() returns DW_DLV_OK when it
     succeeds.  In case of an error, it returns DW_DLV_ERROR and sets the
     argument err.

ERRORS
     Function dwarf_get_fde_info_for_all_regs() can fail with:

     [DW_DLE_ARGUMENT]                  One of the arguments fde, reg_table or
                                        row_pc was NULL.

     [DW_DLE_PC_NOT_IN_FDE_RANGE]       The program counter value provided in
                                        argument pc did not fall in the range
                                        covered by argument fde.

SEE ALSO
     dwarf(3), dwarf_get_fde_at_pc(3), dwarf_get_fde_info_for_all_regs3(3),
     dwarf_get_fde_info_for_cfa_reg3(3), dwarf_get_fde_info_for_reg(3),
     dwarf_get_fde_info_for_reg3(3), dwarf_get_fde_n(3),
     dwarf_set_frame_cfa_value(3), dwarf_set_frame_rule_initial_value(3),
     dwarf_set_frame_rule_table_size(3), dwarf_set_frame_same_value(3),
     dwarf_set_frame_undefined_value(3)

NetBSD 10.99                     June 4, 2011                     NetBSD 10.99