dwarf_get_fde_at_pc(3) [freebsd man page]

DWARF_GET_FDE_AT_PC(3)					   BSD Library Functions Manual 				    DWARF_GET_FDE_AT_PC(3)

NAME

     dwarf_get_fde_at_pc -- retrieve the FDE descriptor for an address

LIBRARY

     DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS

     #include <libdwarf.h>

     int
     dwarf_get_fde_at_pc(Dwarf_Fde *fdelist, Dwarf_Addr pc, Dwarf_Fde *ret_fde, Dwarf_Addr *lopc, Dwarf_Addr *hipc, Dwarf_Error *err);

DESCRIPTION

     Function dwarf_get_fde_at_pc() searches the provided array of DWARF FDE descriptors for a descriptor covering a given program counter
     address.

     Argument fdelist should point to an array of FDE descriptors, as returned by the functions dwarf_get_fde_list(3) or dwarf_get_fde_list_eh(3).

     Argument pc should contain the program counter address being looked up.

     Argument ret_fde should point to a location that will hold the returned FDE descriptor.

     Argument lopc should point to a location that will be set to the lowest address covered by the returned FDE descriptor.

     Argument hipc should point to a location that will be set to the highest address covered by the returned FDE descriptor.

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

RETURN VALUES

     Function dwarf_get_fde_at_pc() returns DW_DLV_OK when it succeeds.  It returns DW_DLV_NO_ENTRY if a FDE descriptor that covers the address
     specified by argument pc is not found.  In case of an error, it returns DW_DLV_ERROR and sets the argument err.

ERRORS

     Function dwarf_get_fde_at_pc() can fail with:

     [DW_DLE_ARGUMENT]	One of the arguments fdelist, ret_fde, lopc, or hipc was NULL.

     [DW_DLE_NO_ENTRY]	These was no FDE descriptor covering the address specified by argument pc.

SEE ALSO

     dwarf(3), dwarf_get_cie_of_fde(3), dwarf_get_fde_info_for_all_regs(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_instr_bytes(3),
     dwarf_get_fde_list(3), dwarf_get_fde_list_eh(3), dwarf_get_fde_n(3), dwarf_get_fde_range(3)

BSD
								   May 22, 2011 							       BSD

DWARF_GET_FDE_INFO_FOR_ALL_REGS(3)			   BSD Library Functions Manual 			DWARF_GET_FDE_INFO_FOR_ALL_REGS(3)

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 func-
     tion 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_table_size(3),
     dwarf_set_frame_rule_initial_value(3), dwarf_set_frame_same_value(3), dwarf_set_frame_undefined_value(3)

BSD
								   June 4, 2011 							       BSD