dwarf_add_expr_addr,
dwarf_add_expr_addr_b —
add a DW_OP_addr location expression
DWARF Access Library (libdwarf, -ldwarf)
#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);
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.
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.
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.
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)