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DWARF_GET_FDE_INFO_FO... BSD Library Functions Manual DWARF_GET_FDE_INFO_FO... NAME dwarf_get_fde_info_for_reg -- retrieve register rule LIBRARY DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS #include <libdwarf.h> int dwarf_get_fde_info_for_reg(Dwarf_Fde fde, Dwarf_Half table_column, Dwarf_Addr pc, Dwarf_Signed *offset_relevant, Dwarf_Signed *register_num, Dwarf_Signed *offset, Dwarf_Addr *row_pc, Dwarf_Error *error); DESCRIPTION Function dwarf_get_fde_info_for_reg() retrieves a register rule from the register rule table associated with a given FDE descriptor, given a pro- gram counter address and rule column number. Argument fde should reference a valid DWARF FDE descriptor. Arugment table_column should hold the column number of the register rule desired. Argument pc should hold the program counter address to be used to locate the desired register rule row. On successful execution, dwarf_get_fde_info_for_reg() stores information about the register rule found into the locations pointed to by the argu- ments offset_relevant, register_num, offset and row_pc. If there is an offset value associated with the register rule, the loca- tion pointed to by argument offset_relevant will be set to 1. Argument register_num should point to a location which will hold the reg- ister number associated with the register rule. Argument offset should point to a location which will be set to the off- set value associated with the register rule, or to 0 if the register rule does not have an offset value. Argument row_pc should point to a location which will be set to the low- est program counter address associated with the register rule found. If argument err is not NULL, it will be used to return an error descrip- tor in case of an error. COMPATIBILITY Function dwarf_get_fde_info_for_reg() is deprecated since it only sup- ports DWARF2 frame sections. Applications should instead use function dwarf_get_fde_info_for_reg3(3) which supports both DWARF2 and DWARF3 frame sections. RETURN VALUES Function dwarf_get_fde_info_for_reg() 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_reg() can fail with: [DW_DLE_ARGUMENT] One of the arguments fde, offset_relevant, register_num, offset or row_pc was NULL. [DW_DLE_FRAME_TABLE_COL_BAD] The column number provided in argument table_column was too large. [DW_DLE_PC_NOT_IN_FDE_RANGE] The program counter value provided in argu- ment 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_regs(3), dwarf_get_fde_info_for_all_regs3(3), dwarf_get_fde_info_for_cfa_reg3(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) BSD June 4, 2011 BSD
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO
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