| DWARF_GET_FDE_INFO_FOR_CFA_REGS3(3) | Library Functions Manual | DWARF_GET_FDE_INFO_FOR_CFA_REGS3(3) | 
dwarf_get_fde_info_for_cfa_regs3 —
#include <libdwarf.h>
int
  
  dwarf_get_fde_info_for_cfa_regs3(Dwarf_Fde
    fde, Dwarf_Addr pc, Dwarf_Small
    *type, Dwarf_Signed *offset_relevant,
    Dwarf_Signed *register_num,
    Dwarf_Signed *offset_or_block_len,
    Dwarf_Ptr *block_ptr, Dwarf_Addr
    *row_pc, Dwarf_Error *err);
dwarf_get_fde_info_for_cfa_reg3() retrieves the
  CFA register rule for a given program counter address from the register rule
  table associated with an 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 register rule row.
On successful execution,
    dwarf_get_fde_info_for_cfa_reg3() stores information
    about the CFA register rule found into the locations pointed to by the
    arguments type, offset_relevant,
    register_num,
    offset_or_block_len, block_ptr
    and row_pc.
Argument type should point to a location
    which will hold the type code of the register rule found. The returned value
    is one of the DW_EXPR_* contants defined in the
    header file
  <libdwarf.h>.
If there is an offset value associated with the CFA register rule, the location pointed to by argument offset_relevant will be set to 1.
Argument register_num should point to a location which will hold the register number associated with the CFA register rule.
If the CFA register rule is of type
    DW_EXPR_OFFSET or
    DW_EXPR_VAL_OFFSET, the location pointed to by
    argument offset_or_block_len will be set to the offset
    value associated with the register rule, or to 0 if the register rule does
    not have an offset value. If the type code is
    DW_EXPR_EXPRESSION or
    DW_EXPR_VAL_EXPRESSION, the location pointed to by
    argument offset_or_block_len will be set to the length
    in bytes of the DWARF expression block associated with the register
  rule.
Argument block_ptr should point to a location which will be set to a pointer to the content of the DWARF expression block associated with the CFA register rule.
Argument row_pc should point to a location which will be set to the lowest program counter address associated with the register rule found.
If argument err is not NULL, it will be used to return an error descriptor in case of an error.
dwarf_get_fde_info_for_cfa_reg3() returns
  DW_DLV_OK when it succeeds. In case of an error, it
  returns DW_DLV_ERROR and sets the argument
  err.
dwarf_get_fde_info_for_cfa_reg3() can fail
  with:
DW_DLE_ARGUMENT]DW_DLE_PC_NOT_IN_FDE_RANGE]| June 12, 2011 | NetBSD 9.4 |