Updated: 2022/Sep/29

Please read Privacy Policy. It's for your privacy.

DWARF_EXPR_INTO_BLOCK(3)   Library Functions Manual   DWARF_EXPR_INTO_BLOCK(3)

NAME
     dwarf_expr_into_block - retrieve the byte stream for a location
     expression

LIBRARY
     DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS
     #include <libdwarf.h>

     Dwarf_Addr
     dwarf_expr_into_block(Dwarf_P_Expr expr, Dwarf_Unsigned *length,
         Dwarf_Error *err);

DESCRIPTION
     Function dwarf_expr_into_block() retrieves the byte stream representation
     of a location expression.

     Argument expr should reference a location expression descriptor allocated
     using dwarf_new_expr(3).

     Argument length should point to a location which will hold the size in
     bytes of the retrieved byte stream.

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

RETURN VALUES
     On success, function dwarf_expr_into_block() returns the address of the
     first byte of the generated byte stream.  In case of an error, function
     dwarf_expr_into_block() returns DW_DLV_BADADDR and sets the argument err.

ERRORS
     Function dwarf_expr_into_block() can fail with:

     [DW_DLE_ARGUMENT]       One of the arguments expr or length was NULL.

     [DW_DLE_MEMORY]         An out of memory condition was encountered during
                             the execution of the function.

SEE ALSO
     dwarf(3), dwarf_add_AT_location_expr(3), dwarf_add_expr_addr(3),
     dwarf_add_expr_addr_b(3), dwarf_add_expr_gen(3),
     dwarf_expr_current_offset(3), dwarf_new_expr(3)

NetBSD 10.99                  September 13, 2011                  NetBSD 10.99