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dwarf_get_fde_n(3) [freebsd man page]

DWARF_GET_FDE_N(3)					   BSD Library Functions Manual 					DWARF_GET_FDE_N(3)

NAME
dwarf_get_fde_n -- retrieve FDE descriptor LIBRARY
DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS
#include <libdwarf.h> int dwarf_get_fde_n(Dwarf_Fde *fdelist, Dwarf_Unsigned fde_index, Dwarf_Fde *ret_fde, Dwarf_Error *err); DESCRIPTION
Function dwarf_get_fde_n() retrieves an FDE descriptor from an array of FDE descriptors. 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 fde_index specifies the 0-based index of the desired FDE descriptor. Argument ret_fde should point to a location that will hold 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_n() returns DW_DLV_OK when it succeeds. It returns DW_DLV_NO_ENTRY if the FDE descriptor index specified by argument fde_index is out of range. In case of an error, it returns DW_DLV_ERROR and sets the argument err. ERRORS
Function dwarf_get_fde_n() can fail with: [DW_DLE_ARGUMENT] Either of the arguments fdelist or ret_fde was NULL. [DW_DLE_NO_ENTRY] The FDE descriptor index specified by argument fde_index was out of range. SEE ALSO
dwarf(3), dwarf_get_cie_of_fde(3), dwarf_get_fde_at_pc(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_range(3) BSD
May 14, 2011 BSD

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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

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