/* DWARF 2 location expression support for GDB.
- Copyright (C) 2003-2014 Free Software Foundation, Inc.
+ Copyright (C) 2003-2015 Free Software Foundation, Inc.
Contributed by Daniel Jacobowitz, MontaVista Software, Inc.
#include "dwarf2-frame.h"
#include "compile/compile.h"
-extern int dwarf2_always_disassemble;
+extern int dwarf_always_disassemble;
-static const struct dwarf_expr_context_funcs dwarf_expr_ctx_funcs;
+extern const struct dwarf_expr_context_funcs dwarf_expr_ctx_funcs;
static struct value *dwarf2_evaluate_loc_desc_full (struct type *type,
struct frame_info *frame,
locexpr_find_frame_base_location (struct symbol *framefunc, CORE_ADDR pc,
const gdb_byte **start, size_t *length)
{
- struct dwarf2_locexpr_baton *symbaton = SYMBOL_LOCATION_BATON (framefunc);
+ struct dwarf2_locexpr_baton *symbaton
+ = (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (framefunc);
*length = symbaton->size;
*start = symbaton->data;
}
+/* Implement the struct symbol_block_ops::get_frame_base method for
+ LOC_BLOCK functions using a DWARF expression as its DW_AT_frame_base. */
+
+static CORE_ADDR
+locexpr_get_frame_base (struct symbol *framefunc, struct frame_info *frame)
+{
+ struct gdbarch *gdbarch;
+ struct type *type;
+ struct dwarf2_locexpr_baton *dlbaton;
+ const gdb_byte *start;
+ size_t length;
+ struct value *result;
+
+ /* If this method is called, then FRAMEFUNC is supposed to be a DWARF block.
+ Thus, it's supposed to provide the find_frame_base_location method as
+ well. */
+ gdb_assert (SYMBOL_BLOCK_OPS (framefunc)->find_frame_base_location != NULL);
+
+ gdbarch = get_frame_arch (frame);
+ type = builtin_type (gdbarch)->builtin_data_ptr;
+ dlbaton = (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (framefunc);
+
+ SYMBOL_BLOCK_OPS (framefunc)->find_frame_base_location
+ (framefunc, get_frame_pc (frame), &start, &length);
+ result = dwarf2_evaluate_loc_desc (type, frame, start, length,
+ dlbaton->per_cu);
+
+ /* The DW_AT_frame_base attribute contains a location description which
+ computes the base address itself. However, the call to
+ dwarf2_evaluate_loc_desc returns a value representing a variable at
+ that address. The frame base address is thus this variable's
+ address. */
+ return value_address (result);
+}
+
/* Vector for inferior functions as represented by LOC_BLOCK, if the inferior
function uses DWARF expression for its DW_AT_frame_base. */
const struct symbol_block_ops dwarf2_block_frame_base_locexpr_funcs =
{
- locexpr_find_frame_base_location
+ locexpr_find_frame_base_location,
+ locexpr_get_frame_base
};
/* Implement find_frame_base_location method for LOC_BLOCK functions using
loclist_find_frame_base_location (struct symbol *framefunc, CORE_ADDR pc,
const gdb_byte **start, size_t *length)
{
- struct dwarf2_loclist_baton *symbaton = SYMBOL_LOCATION_BATON (framefunc);
+ struct dwarf2_loclist_baton *symbaton
+ = (struct dwarf2_loclist_baton *) SYMBOL_LOCATION_BATON (framefunc);
*start = dwarf2_find_location_expression (symbaton, length, pc);
}
+/* Implement the struct symbol_block_ops::get_frame_base method for
+ LOC_BLOCK functions using a DWARF location list as its DW_AT_frame_base. */
+
+static CORE_ADDR
+loclist_get_frame_base (struct symbol *framefunc, struct frame_info *frame)
+{
+ struct gdbarch *gdbarch;
+ struct type *type;
+ struct dwarf2_loclist_baton *dlbaton;
+ const gdb_byte *start;
+ size_t length;
+ struct value *result;
+
+ /* If this method is called, then FRAMEFUNC is supposed to be a DWARF block.
+ Thus, it's supposed to provide the find_frame_base_location method as
+ well. */
+ gdb_assert (SYMBOL_BLOCK_OPS (framefunc)->find_frame_base_location != NULL);
+
+ gdbarch = get_frame_arch (frame);
+ type = builtin_type (gdbarch)->builtin_data_ptr;
+ dlbaton = (struct dwarf2_loclist_baton *) SYMBOL_LOCATION_BATON (framefunc);
+
+ SYMBOL_BLOCK_OPS (framefunc)->find_frame_base_location
+ (framefunc, get_frame_pc (frame), &start, &length);
+ result = dwarf2_evaluate_loc_desc (type, frame, start, length,
+ dlbaton->per_cu);
+
+ /* The DW_AT_frame_base attribute contains a location description which
+ computes the base address itself. However, the call to
+ dwarf2_evaluate_loc_desc returns a value representing a variable at
+ that address. The frame base address is thus this variable's
+ address. */
+ return value_address (result);
+}
+
/* Vector for inferior functions as represented by LOC_BLOCK, if the inferior
function uses DWARF location list for its DW_AT_frame_base. */
const struct symbol_block_ops dwarf2_block_frame_base_loclist_funcs =
{
- loclist_find_frame_base_location
+ loclist_find_frame_base_location,
+ loclist_get_frame_base
};
/* See dwarf2loc.h. */
static void
dwarf_expr_dwarf_call (struct dwarf_expr_context *ctx, cu_offset die_offset)
{
- struct dwarf_expr_baton *debaton = ctx->baton;
+ struct dwarf_expr_baton *debaton = (struct dwarf_expr_baton *) ctx->baton;
per_cu_dwarf_call (ctx, die_offset, debaton->per_cu,
ctx->funcs->get_frame_pc, ctx->baton);
dwarf_expr_get_base_type (struct dwarf_expr_context *ctx,
cu_offset die_offset)
{
- struct dwarf_expr_baton *debaton = ctx->baton;
+ struct dwarf_expr_baton *debaton = (struct dwarf_expr_baton *) ctx->baton;
return dwarf2_get_die_type (die_offset, debaton->per_cu);
}
{
/* Create the initial chain containing all the passed PCs. */
- result = xmalloc (sizeof (*result) + sizeof (*result->call_site)
- * (length - 1));
+ result = ((struct call_site_chain *)
+ xmalloc (sizeof (*result)
+ + sizeof (*result->call_site) * (length - 1)));
result->length = length;
result->callers = result->callees = length;
if (!VEC_empty (call_sitep, chain))
/* See call_site_find_chain_1 why there is no way to reach the bottom callee
PC again. In such case there must be two different code paths to reach
- it, therefore some of the former determined intermediate PCs must differ
- and the unambiguous chain gets shortened. */
- gdb_assert (result->callers + result->callees < result->length);
+ it. CALLERS + CALLEES equal to LENGTH in the case of self tail-call. */
+ gdb_assert (result->callers + result->callees <= result->length);
}
/* Create and return call_site_chain for CALLER_PC and CALLEE_PC. All the
call_site_find_chain (struct gdbarch *gdbarch, CORE_ADDR caller_pc,
CORE_ADDR callee_pc)
{
- volatile struct gdb_exception e;
struct call_site_chain *retval = NULL;
- TRY_CATCH (e, RETURN_MASK_ERROR)
+ TRY
{
retval = call_site_find_chain_1 (gdbarch, caller_pc, callee_pc);
}
- if (e.reason < 0)
+ CATCH (e, RETURN_MASK_ERROR)
{
if (e.error == NO_ENTRY_VALUE_ERROR)
{
else
throw_exception (e);
}
+ END_CATCH
+
return retval;
}
/* DW_AT_GNU_call_site_value is a DWARF expression, not a DWARF
location. Postprocessing of DWARF_VALUE_MEMORY would lose the type from
DWARF block. */
- data = alloca (size + 1);
+ data = (gdb_byte *) alloca (size + 1);
memcpy (data, data_src, size);
data[size] = DW_OP_stack_value;
size_t size;
gdb_assert (ctx->funcs == &dwarf_expr_ctx_funcs);
- debaton = ctx->baton;
+ debaton = (struct dwarf_expr_baton *) ctx->baton;
frame = debaton->frame;
caller_frame = get_prev_frame (frame);
static CORE_ADDR
dwarf_expr_get_obj_addr (void *baton)
{
- struct dwarf_expr_baton *debaton = baton;
+ struct dwarf_expr_baton *debaton = (struct dwarf_expr_baton *) baton;
gdb_assert (debaton != NULL);
if (TYPE_CODE (checked_type) != TYPE_CODE_REF)
return NULL;
- target_val = value_computed_closure (value);
+ target_val = (struct value *) value_computed_closure (value);
value_incref (target_val);
return target_val;
}
static void *
entry_data_value_copy_closure (const struct value *v)
{
- struct value *target_val = value_computed_closure (v);
+ struct value *target_val = (struct value *) value_computed_closure (v);
value_incref (target_val);
return target_val;
static void
entry_data_value_free_closure (struct value *v)
{
- struct value *target_val = value_computed_closure (v);
+ struct value *target_val = (struct value *) value_computed_closure (v);
value_free (target_val);
}
if (buffer_size < this_size)
{
buffer_size = this_size;
- buffer = xrealloc (buffer, buffer_size);
+ buffer = (gdb_byte *) xrealloc (buffer, buffer_size);
}
intermediate_buffer = buffer;
if (buffer_size < this_size)
{
buffer_size = this_size;
- buffer = xrealloc (buffer, buffer_size);
+ buffer = (gdb_byte *) xrealloc (buffer, buffer_size);
}
source_buffer = buffer;
need_bitwise = 1;
static CORE_ADDR
get_frame_address_in_block_wrapper (void *baton)
{
- return get_frame_address_in_block (baton);
+ return get_frame_address_in_block ((struct frame_info *) baton);
}
/* An implementation of an lval_funcs method to indirect through a
int i, bit_offset, bit_length;
struct dwarf_expr_piece *piece = NULL;
LONGEST byte_offset;
+ enum bfd_endian byte_order;
type = check_typedef (value_type (value));
if (TYPE_CODE (type) != TYPE_CODE_PTR)
/* This is an offset requested by GDB, such as value subscripts.
However, due to how synthetic pointers are implemented, this is
always presented to us as a pointer type. This means we have to
- sign-extend it manually as appropriate. */
- byte_offset = value_as_address (value);
- if (TYPE_LENGTH (value_type (value)) < sizeof (LONGEST))
- byte_offset = gdb_sign_extend (byte_offset,
- 8 * TYPE_LENGTH (value_type (value)));
+ sign-extend it manually as appropriate. Use raw
+ extract_signed_integer directly rather than value_as_address and
+ sign extend afterwards on architectures that would need it
+ (mostly everywhere except MIPS, which has signed addresses) as
+ the later would go through gdbarch_pointer_to_address and thus
+ return a CORE_ADDR with high bits set on architectures that
+ encode address spaces and other things in CORE_ADDR. */
+ byte_order = gdbarch_byte_order (get_frame_arch (frame));
+ byte_offset = extract_signed_integer (value_contents (value),
+ TYPE_LENGTH (type), byte_order);
byte_offset += piece->v.ptr.offset;
gdb_assert (piece);
/* Virtual method table for dwarf2_evaluate_loc_desc_full below. */
-static const struct dwarf_expr_context_funcs dwarf_expr_ctx_funcs =
+const struct dwarf_expr_context_funcs dwarf_expr_ctx_funcs =
{
dwarf_expr_read_addr_from_reg,
dwarf_expr_get_reg_value,
struct dwarf_expr_context *ctx;
struct cleanup *old_chain, *value_chain;
struct objfile *objfile = dwarf2_per_cu_objfile (per_cu);
- volatile struct gdb_exception ex;
if (byte_offset < 0)
invalid_synthetic_pointer ();
ctx->baton = &baton;
ctx->funcs = &dwarf_expr_ctx_funcs;
- TRY_CATCH (ex, RETURN_MASK_ERROR)
+ TRY
{
dwarf_expr_eval (ctx, data, size);
}
- if (ex.reason < 0)
+ CATCH (ex, RETURN_MASK_ERROR)
{
if (ex.error == NOT_AVAILABLE_ERROR)
{
else
throw_exception (ex);
}
+ END_CATCH
if (ctx->num_pieces > 0)
{
}
/* Evaluates a dwarf expression and stores the result in VAL, expecting
- that the dwarf expression only produces a single CORE_ADDR. ADDR is a
- context (location of a variable) and might be needed to evaluate the
- location expression.
+ that the dwarf expression only produces a single CORE_ADDR. FRAME is the
+ frame in which the expression is evaluated. ADDR is a context (location of
+ a variable) and might be needed to evaluate the location expression.
Returns 1 on success, 0 otherwise. */
static int
dwarf2_locexpr_baton_eval (const struct dwarf2_locexpr_baton *dlbaton,
+ struct frame_info *frame,
CORE_ADDR addr,
CORE_ADDR *valp)
{
ctx = new_dwarf_expr_context ();
cleanup = make_cleanup_free_dwarf_expr_context (ctx);
- baton.frame = get_selected_frame (NULL);
+ baton.frame = frame;
baton.per_cu = dlbaton->per_cu;
baton.obj_address = addr;
int
dwarf2_evaluate_property (const struct dynamic_prop *prop,
- CORE_ADDR address, CORE_ADDR *value)
+ struct frame_info *frame,
+ struct property_addr_info *addr_stack,
+ CORE_ADDR *value)
{
if (prop == NULL)
return 0;
+ if (frame == NULL && has_stack_frames ())
+ frame = get_selected_frame (NULL);
+
switch (prop->kind)
{
case PROP_LOCEXPR:
{
- const struct dwarf2_property_baton *baton = prop->data.baton;
+ const struct dwarf2_property_baton *baton
+ = (const struct dwarf2_property_baton *) prop->data.baton;
- if (dwarf2_locexpr_baton_eval (&baton->locexpr, address, value))
+ if (dwarf2_locexpr_baton_eval (&baton->locexpr, frame,
+ addr_stack ? addr_stack->addr : 0,
+ value))
{
if (baton->referenced_type)
{
case PROP_LOCLIST:
{
- struct dwarf2_property_baton *baton = prop->data.baton;
- struct frame_info *frame = get_selected_frame (NULL);
+ struct dwarf2_property_baton *baton
+ = (struct dwarf2_property_baton *) prop->data.baton;
CORE_ADDR pc = get_frame_address_in_block (frame);
const gdb_byte *data;
struct value *val;
case PROP_CONST:
*value = prop->data.const_val;
return 1;
+
+ case PROP_ADDR_OFFSET:
+ {
+ struct dwarf2_property_baton *baton
+ = (struct dwarf2_property_baton *) prop->data.baton;
+ struct property_addr_info *pinfo;
+ struct value *val;
+
+ for (pinfo = addr_stack; pinfo != NULL; pinfo = pinfo->next)
+ if (pinfo->type == baton->referenced_type)
+ break;
+ if (pinfo == NULL)
+ error (_("cannot find reference address for offset property"));
+ if (pinfo->valaddr != NULL)
+ val = value_from_contents
+ (baton->offset_info.type,
+ pinfo->valaddr + baton->offset_info.offset);
+ else
+ val = value_at (baton->offset_info.type,
+ pinfo->addr + baton->offset_info.offset);
+ *value = value_as_address (val);
+ return 1;
+ }
}
return 0;
CORE_ADDR pc,
struct symbol *sym)
{
- struct dwarf2_property_baton *baton = prop->data.baton;
+ struct dwarf2_property_baton *baton
+ = (struct dwarf2_property_baton *) prop->data.baton;
const gdb_byte *data;
size_t size;
struct dwarf2_per_cu_data *per_cu;
static CORE_ADDR
needs_frame_read_addr_from_reg (void *baton, int regnum)
{
- struct needs_frame_baton *nf_baton = baton;
+ struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
nf_baton->needs_frame = 1;
return 1;
static struct value *
needs_frame_get_reg_value (void *baton, struct type *type, int regnum)
{
- struct needs_frame_baton *nf_baton = baton;
+ struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
nf_baton->needs_frame = 1;
return value_zero (type, not_lval);
needs_frame_frame_base (void *baton, const gdb_byte **start, size_t * length)
{
static gdb_byte lit0 = DW_OP_lit0;
- struct needs_frame_baton *nf_baton = baton;
+ struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
*start = &lit0;
*length = 1;
static CORE_ADDR
needs_frame_frame_cfa (void *baton)
{
- struct needs_frame_baton *nf_baton = baton;
+ struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
nf_baton->needs_frame = 1;
return 1;
static CORE_ADDR
needs_frame_tls_address (void *baton, CORE_ADDR offset)
{
- struct needs_frame_baton *nf_baton = baton;
+ struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
nf_baton->needs_frame = 1;
return 1;
static void
needs_frame_dwarf_call (struct dwarf_expr_context *ctx, cu_offset die_offset)
{
- struct needs_frame_baton *nf_baton = ctx->baton;
+ struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) ctx->baton;
per_cu_dwarf_call (ctx, die_offset, nf_baton->per_cu,
ctx->funcs->get_frame_pc, ctx->baton);
enum call_site_parameter_kind kind,
union call_site_parameter_u kind_u, int deref_size)
{
- struct needs_frame_baton *nf_baton = ctx->baton;
+ struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) ctx->baton;
nf_baton->needs_frame = 1;
static CORE_ADDR
get_ax_pc (void *baton)
{
- struct agent_expr *expr = baton;
+ struct agent_expr *expr = (struct agent_expr *) baton;
return expr->scope;
}
unsigned int addr_size_bits = 8 * addr_size;
int bits_big_endian = gdbarch_bits_big_endian (arch);
- offsets = xmalloc ((op_end - op_ptr) * sizeof (int));
+ offsets = XNEWVEC (int, op_end - op_ptr);
cleanups = make_cleanup (xfree, offsets);
for (i = 0; i < op_end - op_ptr; ++i)
while (op_ptr < op_end)
{
- enum dwarf_location_atom op = *op_ptr;
+ enum dwarf_location_atom op = (enum dwarf_location_atom) *op_ptr;
uint64_t uoffset, reg;
int64_t offset;
int i;
static struct value *
locexpr_read_variable (struct symbol *symbol, struct frame_info *frame)
{
- struct dwarf2_locexpr_baton *dlbaton = SYMBOL_LOCATION_BATON (symbol);
+ struct dwarf2_locexpr_baton *dlbaton
+ = (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (symbol);
struct value *val;
val = dwarf2_evaluate_loc_desc (SYMBOL_TYPE (symbol), frame, dlbaton->data,
static struct value *
locexpr_read_variable_at_entry (struct symbol *symbol, struct frame_info *frame)
{
- struct dwarf2_locexpr_baton *dlbaton = SYMBOL_LOCATION_BATON (symbol);
+ struct dwarf2_locexpr_baton *dlbaton
+ = (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (symbol);
return value_of_dwarf_block_entry (SYMBOL_TYPE (symbol), frame, dlbaton->data,
dlbaton->size);
static int
locexpr_read_needs_frame (struct symbol *symbol)
{
- struct dwarf2_locexpr_baton *dlbaton = SYMBOL_LOCATION_BATON (symbol);
+ struct dwarf2_locexpr_baton *dlbaton
+ = (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (symbol);
return dwarf2_loc_desc_needs_frame (dlbaton->data, dlbaton->size,
dlbaton->per_cu);
&& (all
|| (data[0] != DW_OP_piece && data[0] != DW_OP_bit_piece)))
{
- enum dwarf_location_atom op = *data++;
+ enum dwarf_location_atom op = (enum dwarf_location_atom) *data++;
uint64_t ul;
int64_t l;
const char *name;
else
fprintf_filtered (stream, _(", and "));
- if (!dwarf2_always_disassemble)
+ if (!dwarf_always_disassemble)
{
data = locexpr_describe_location_piece (symbol, stream,
addr, objfile, per_cu,
get_objfile_arch (objfile),
addr_size, offset_size, data,
data, end, 0,
- dwarf2_always_disassemble,
+ dwarf_always_disassemble,
per_cu);
}
locexpr_describe_location (struct symbol *symbol, CORE_ADDR addr,
struct ui_file *stream)
{
- struct dwarf2_locexpr_baton *dlbaton = SYMBOL_LOCATION_BATON (symbol);
+ struct dwarf2_locexpr_baton *dlbaton
+ = (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (symbol);
struct objfile *objfile = dwarf2_per_cu_objfile (dlbaton->per_cu);
unsigned int addr_size = dwarf2_per_cu_addr_size (dlbaton->per_cu);
int offset_size = dwarf2_per_cu_offset_size (dlbaton->per_cu);
locexpr_tracepoint_var_ref (struct symbol *symbol, struct gdbarch *gdbarch,
struct agent_expr *ax, struct axs_value *value)
{
- struct dwarf2_locexpr_baton *dlbaton = SYMBOL_LOCATION_BATON (symbol);
+ struct dwarf2_locexpr_baton *dlbaton
+ = (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (symbol);
unsigned int addr_size = dwarf2_per_cu_addr_size (dlbaton->per_cu);
if (dlbaton->size == 0)
unsigned char *registers_used,
CORE_ADDR pc, const char *result_name)
{
- struct dwarf2_locexpr_baton *dlbaton = SYMBOL_LOCATION_BATON (sym);
+ struct dwarf2_locexpr_baton *dlbaton
+ = (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (sym);
unsigned int addr_size = dwarf2_per_cu_addr_size (dlbaton->per_cu);
if (dlbaton->size == 0)
static struct value *
loclist_read_variable (struct symbol *symbol, struct frame_info *frame)
{
- struct dwarf2_loclist_baton *dlbaton = SYMBOL_LOCATION_BATON (symbol);
+ struct dwarf2_loclist_baton *dlbaton
+ = (struct dwarf2_loclist_baton *) SYMBOL_LOCATION_BATON (symbol);
struct value *val;
const gdb_byte *data;
size_t size;
static struct value *
loclist_read_variable_at_entry (struct symbol *symbol, struct frame_info *frame)
{
- struct dwarf2_loclist_baton *dlbaton = SYMBOL_LOCATION_BATON (symbol);
+ struct dwarf2_loclist_baton *dlbaton
+ = (struct dwarf2_loclist_baton *) SYMBOL_LOCATION_BATON (symbol);
const gdb_byte *data;
size_t size;
CORE_ADDR pc;
loclist_describe_location (struct symbol *symbol, CORE_ADDR addr,
struct ui_file *stream)
{
- struct dwarf2_loclist_baton *dlbaton = SYMBOL_LOCATION_BATON (symbol);
+ struct dwarf2_loclist_baton *dlbaton
+ = (struct dwarf2_loclist_baton *) SYMBOL_LOCATION_BATON (symbol);
const gdb_byte *loc_ptr, *buf_end;
struct objfile *objfile = dwarf2_per_cu_objfile (dlbaton->per_cu);
struct gdbarch *gdbarch = get_objfile_arch (objfile);
loclist_tracepoint_var_ref (struct symbol *symbol, struct gdbarch *gdbarch,
struct agent_expr *ax, struct axs_value *value)
{
- struct dwarf2_loclist_baton *dlbaton = SYMBOL_LOCATION_BATON (symbol);
+ struct dwarf2_loclist_baton *dlbaton
+ = (struct dwarf2_loclist_baton *) SYMBOL_LOCATION_BATON (symbol);
const gdb_byte *data;
size_t size;
unsigned int addr_size = dwarf2_per_cu_addr_size (dlbaton->per_cu);
unsigned char *registers_used,
CORE_ADDR pc, const char *result_name)
{
- struct dwarf2_loclist_baton *dlbaton = SYMBOL_LOCATION_BATON (sym);
+ struct dwarf2_loclist_baton *dlbaton
+ = (struct dwarf2_loclist_baton *) SYMBOL_LOCATION_BATON (sym);
unsigned int addr_size = dwarf2_per_cu_addr_size (dlbaton->per_cu);
const gdb_byte *data;
size_t size;
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