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Command: dwarf_expr_into_block | Section: 3 | Source: FreeBSD | File: dwarf_expr_into_block.3.gz
DWARF_EXPR_INTO_BLOCK(3) FreeBSD Library Functions Manual
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)
FreeBSD 14.1-RELEASE-p8 September 13, 2011 FreeBSD 14.1-RELEASE-p8