NAME
dwarf_add_expr_addr,
dwarf_add_expr_addr_b
—
add a DW_OP_addr location expression
LIBRARY
DWARF Access Library (libdwarf, -ldwarf)
SYNOPSIS
#include <libdwarf.h>
Dwarf_Unsigned
dwarf_add_expr_addr(
Dwarf_P_Expr expr,
Dwarf_Unsigned address,
Dwarf_Signed
sym_index,
Dwarf_Error *err);
Dwarf_Unsigned
dwarf_add_expr_addr_b(
Dwarf_P_Expr expr,
Dwarf_Unsigned address,
Dwarf_Unsigned
sym_index,
Dwarf_Error *err);
DESCRIPTION
Function
dwarf_add_expr_addr_b() adds a
DW_OP_addr
location expression to the location
expression descriptor referenced by argument
expr.
Argument
expr should reference a location expression
descriptor allocated using the function
dwarf_new_expr(3).
Argument
address specifies the operand, a relocatable
address value.
Argument
sym_index specifies the ELF symbol index of the
symbol to be used for relocation.
If argument
err is not NULL, it will be used to store
error information in case of an error.
Function
dwarf_add_expr_addr() is deprecated. It is similar to
function
dwarf_add_expr_addr_b() except that it cannot
handle all possible symbol index values.
RETURN VALUES
On success, these functions return the size in bytes of the location expression
byte stream generated. In case of an error, these functions return
DW_DLV_NOCOUNT
and set the argument
err.
ERRORS
These functions can fail with:
-
-
- [
DW_DLE_ARGUMENT
]
- Argument expr 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_gen(3),
dwarf_expr_current_offset(3),
dwarf_expr_into_block(3),
dwarf_new_expr(3)