/* DWARF 2 Expression Evaluator.
- Copyright (C) 2001, 2002, 2003, 2005, 2007, 2008, 2009, 2010
+ Copyright (C) 2001, 2002, 2003, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
Contributed by Daniel Berlin <dan@dberlin.org>.
DWARF_VALUE_LITERAL,
/* The piece was optimized out. */
- DWARF_VALUE_OPTIMIZED_OUT
+ DWARF_VALUE_OPTIMIZED_OUT,
+
+ /* The piece is an implicit pointer. */
+ DWARF_VALUE_IMPLICIT_POINTER
};
/* The dwarf expression stack. */
struct dwarf_stack_value
{
- CORE_ADDR value;
+ ULONGEST value;
/* Non-zero if the piece is in memory and is known to be
on the program's stack. It is always ok to set this to zero.
/* Target address size in bytes. */
int addr_size;
+ /* Offset used to relocate DW_OP_addr argument. */
+ CORE_ADDR offset;
+
/* An opaque argument provided by the caller, which will be passed
to all of the callback functions. */
void *baton;
/* Return the CFA for the frame. */
CORE_ADDR (*get_frame_cfa) (void *baton);
+ /* Return the PC for the frame. */
+ CORE_ADDR (*get_frame_pc) (void *baton);
+
/* Return the thread-local storage address for
DW_OP_GNU_push_tls_address. */
CORE_ADDR (*get_tls_address) (void *baton, CORE_ADDR offset);
/* Location of the value. */
enum dwarf_value_location location;
- /* For VALUE_LITERAL, a the current literal value's length and
- data. */
+ /* For DWARF_VALUE_LITERAL, a the current literal value's length and
+ data. For DWARF_VALUE_IMPLICIT_POINTER, LEN is the offset of the
+ target DIE. */
ULONGEST len;
const gdb_byte *data;
{
struct
{
- /* This piece's address or register number. */
- CORE_ADDR value;
+ /* This piece's address, for DWARF_VALUE_MEMORY pieces. */
+ CORE_ADDR addr;
/* Non-zero if the piece is known to be in memory and on
the program's stack. */
int in_stack_memory;
- } expr;
+ } mem;
+
+ /* The piece's register number or literal value, for
+ DWARF_VALUE_REGISTER or DWARF_VALUE_STACK pieces. */
+ ULONGEST value;
struct
{
- /* A pointer to the data making up this piece, for literal
- pieces. */
+ /* A pointer to the data making up this piece,
+ for DWARF_VALUE_LITERAL pieces. */
const gdb_byte *data;
/* The length of the available data. */
ULONGEST length;
} literal;
+
+ /* Used for DWARF_VALUE_IMPLICIT_POINTER. */
+ struct
+ {
+ /* The referent DIE from DW_OP_GNU_implicit_pointer. */
+ ULONGEST die;
+ /* The byte offset into the resulting data. */
+ LONGEST offset;
+ } ptr;
} v;
/* The length of the piece, in bits. */
struct cleanup *
make_cleanup_free_dwarf_expr_context (struct dwarf_expr_context *ctx);
-void dwarf_expr_push (struct dwarf_expr_context *ctx, CORE_ADDR value,
+void dwarf_expr_push (struct dwarf_expr_context *ctx, ULONGEST value,
int in_stack_memory);
void dwarf_expr_pop (struct dwarf_expr_context *ctx);
void dwarf_expr_eval (struct dwarf_expr_context *ctx, const gdb_byte *addr,
size_t len);
-CORE_ADDR dwarf_expr_fetch (struct dwarf_expr_context *ctx, int n);
+ULONGEST dwarf_expr_fetch (struct dwarf_expr_context *ctx, int n);
+CORE_ADDR dwarf_expr_fetch_address (struct dwarf_expr_context *ctx, int n);
int dwarf_expr_fetch_in_stack_memory (struct dwarf_expr_context *ctx, int n);
ULONGEST * r);
const gdb_byte *read_sleb128 (const gdb_byte *buf, const gdb_byte *buf_end,
LONGEST * r);
-CORE_ADDR dwarf2_read_address (struct gdbarch *gdbarch, const gdb_byte *buf,
- const gdb_byte *buf_end, int addr_size);
const char *dwarf_stack_op_name (unsigned int, int);