/* Find a variable's value in memory, for GDB, the GNU debugger.
- Copyright (C) 1986-2019 Free Software Foundation, Inc.
+ Copyright (C) 1986-2021 Free Software Foundation, Inc.
This file is part of GDB.
#include "block.h"
#include "objfiles.h"
#include "language.h"
-#include "dwarf2loc.h"
-#include "common/selftest.h"
+#include "dwarf2/loc.h"
+#include "gdbsupport/selftest.h"
/* Basic byte-swapping routines. All 'extract' functions return a
host-format integer from a target-format integer at ADDR which is
CORE_ADDR
extract_typed_address (const gdb_byte *buf, struct type *type)
{
- if (TYPE_CODE (type) != TYPE_CODE_PTR && !TYPE_IS_REFERENCE (type))
+ if (type->code () != TYPE_CODE_PTR && !TYPE_IS_REFERENCE (type))
internal_error (__FILE__, __LINE__,
_("extract_typed_address: "
"type is not a pointer or reference"));
- return gdbarch_pointer_to_address (get_type_arch (type), type, buf);
+ return gdbarch_pointer_to_address (type->arch (), type, buf);
}
/* All 'store' functions accept a host-format integer and store a
void
store_typed_address (gdb_byte *buf, struct type *type, CORE_ADDR addr)
{
- if (TYPE_CODE (type) != TYPE_CODE_PTR && !TYPE_IS_REFERENCE (type))
+ if (type->code () != TYPE_CODE_PTR && !TYPE_IS_REFERENCE (type))
internal_error (__FILE__, __LINE__,
_("store_typed_address: "
"type is not a pointer or reference"));
- gdbarch_address_to_pointer (get_type_arch (type), type, buf, addr);
+ gdbarch_address_to_pointer (type->arch (), type, buf, addr);
}
/* Copy a value from SOURCE of size SOURCE_SIZE bytes to DEST of size DEST_SIZE
bytes. If SOURCE_SIZE is greater than DEST_SIZE, then truncate the most
significant bytes. If SOURCE_SIZE is less than DEST_SIZE then either sign
or zero extended according to IS_SIGNED. Values are stored in memory with
- endianess BYTE_ORDER. */
+ endianness BYTE_ORDER. */
void
copy_integer_to_size (gdb_byte *dest, int dest_size, const gdb_byte *source,
/* Return a `value' with the contents of (virtual or cooked) register
REGNUM as found in the specified FRAME. The register's type is
- determined by register_type(). */
+ determined by register_type (). */
struct value *
value_of_register (int regnum, struct frame_info *frame)
/* Return a `value' with the contents of (virtual or cooked) register
REGNUM as found in the specified FRAME. The register's type is
- determined by register_type(). The value is not fetched. */
+ determined by register_type (). The value is not fetched. */
struct value *
value_of_register_lazy (struct frame_info *frame, int regnum)
next_frame = get_next_frame_sentinel_okay (frame);
+ /* In some cases NEXT_FRAME may not have a valid frame-id yet. This can
+ happen if we end up trying to unwind a register as part of the frame
+ sniffer. The only time that we get here without a valid frame-id is
+ if NEXT_FRAME is an inline frame. If this is the case then we can
+ avoid getting into trouble here by skipping past the inline frames. */
+ while (get_frame_type (next_frame) == INLINE_FRAME)
+ next_frame = get_next_frame_sentinel_okay (next_frame);
+
/* We should have a valid next frame. */
gdb_assert (frame_id_p (get_frame_id (next_frame)));
unsigned_pointer_to_address (struct gdbarch *gdbarch,
struct type *type, const gdb_byte *buf)
{
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ enum bfd_endian byte_order = type_byte_order (type);
return extract_unsigned_integer (buf, TYPE_LENGTH (type), byte_order);
}
signed_pointer_to_address (struct gdbarch *gdbarch,
struct type *type, const gdb_byte *buf)
{
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ enum bfd_endian byte_order = type_byte_order (type);
return extract_signed_integer (buf, TYPE_LENGTH (type), byte_order);
}
unsigned_address_to_pointer (struct gdbarch *gdbarch, struct type *type,
gdb_byte *buf, CORE_ADDR addr)
{
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ enum bfd_endian byte_order = type_byte_order (type);
store_unsigned_integer (buf, TYPE_LENGTH (type), byte_order, addr);
}
address_to_signed_pointer (struct gdbarch *gdbarch, struct type *type,
gdb_byte *buf, CORE_ADDR addr)
{
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ enum bfd_endian byte_order = type_byte_order (type);
store_signed_integer (buf, TYPE_LENGTH (type), byte_order, addr);
}
switch (SYMBOL_CLASS (sym))
{
/* All cases listed explicitly so that gcc -Wall will detect it if
- we failed to consider one. */
+ we failed to consider one. */
case LOC_COMPUTED:
gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method"));
case LOC_LABEL:
/* Getting the address of a label can be done independently of the block,
- even if some *uses* of that address wouldn't work so well without
- the right frame. */
+ even if some *uses* of that address wouldn't work so well without
+ the right frame. */
case LOC_BLOCK:
case LOC_CONST_BYTES:
QUIT;
/* If we don't know how to compute FRAME's base address, don't give up:
- maybe the frame we are looking for is upper in the stace frame. */
+ maybe the frame we are looking for is upper in the stack frame. */
if (framefunc != NULL
&& SYMBOL_BLOCK_OPS (framefunc) != NULL
&& SYMBOL_BLOCK_OPS (framefunc)->get_frame_base != NULL
{
if (BLOCK_FUNCTION (var_block)
&& !block_inlined_p (var_block)
- && SYMBOL_PRINT_NAME (BLOCK_FUNCTION (var_block)))
+ && BLOCK_FUNCTION (var_block)->print_name ())
error (_("No frame is currently executing in block %s."),
- SYMBOL_PRINT_NAME (BLOCK_FUNCTION (var_block)));
+ BLOCK_FUNCTION (var_block)->print_name ());
else
error (_("No frame is currently executing in specified"
" block"));
return frame;
}
-/* A default implementation for the "la_read_var_value" hook in
- the language vector which should work in most situations. */
+/* See language.h. */
struct value *
-default_read_var_value (struct symbol *var, const struct block *var_block,
- struct frame_info *frame)
+language_defn::read_var_value (struct symbol *var,
+ const struct block *var_block,
+ struct frame_info *frame) const
{
struct value *v;
struct type *type = SYMBOL_TYPE (var);
sym_need = symbol_read_needs (var);
if (sym_need == SYMBOL_NEEDS_FRAME)
gdb_assert (frame != NULL);
- else if (sym_need == SYMBOL_NEEDS_REGISTERS && !target_has_registers)
- error (_("Cannot read `%s' without registers"), SYMBOL_PRINT_NAME (var));
+ else if (sym_need == SYMBOL_NEEDS_REGISTERS && !target_has_registers ())
+ error (_("Cannot read `%s' without registers"), var->print_name ());
if (frame != NULL)
frame = get_hosting_frame (var, var_block, frame);
if (is_dynamic_type (type))
{
/* Value is a constant byte-sequence and needs no memory access. */
- type = resolve_dynamic_type (type, NULL, /* Unused address. */ 0);
+ type = resolve_dynamic_type (type, {}, /* Unused address. */ 0);
}
/* Put the constant back in target format. */
v = allocate_value (type);
store_signed_integer (value_contents_raw (v), TYPE_LENGTH (type),
- gdbarch_byte_order (get_type_arch (type)),
+ type_byte_order (type),
(LONGEST) SYMBOL_VALUE (var));
VALUE_LVAL (v) = not_lval;
return v;
v = allocate_value (type);
if (overlay_debugging)
{
- addr
- = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var),
- SYMBOL_OBJ_SECTION (symbol_objfile (var),
- var));
-
+ struct objfile *var_objfile = symbol_objfile (var);
+ addr = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var),
+ var->obj_section (var_objfile));
store_typed_address (value_contents_raw (v), type, addr);
}
else
if (is_dynamic_type (type))
{
/* Value is a constant byte-sequence and needs no memory access. */
- type = resolve_dynamic_type (type, NULL, /* Unused address. */ 0);
+ type = resolve_dynamic_type (type, {}, /* Unused address. */ 0);
}
v = allocate_value (type);
memcpy (value_contents_raw (v), SYMBOL_VALUE_BYTES (var),
case LOC_STATIC:
if (overlay_debugging)
- addr = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var),
- SYMBOL_OBJ_SECTION (symbol_objfile (var),
- var));
+ addr
+ = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var),
+ var->obj_section (symbol_objfile (var)));
else
addr = SYMBOL_VALUE_ADDRESS (var);
break;
addr = get_frame_args_address (frame);
if (!addr)
error (_("Unknown argument list address for `%s'."),
- SYMBOL_PRINT_NAME (var));
+ var->print_name ());
addr += SYMBOL_VALUE (var);
break;
argref = get_frame_args_address (frame);
if (!argref)
error (_("Unknown argument list address for `%s'."),
- SYMBOL_PRINT_NAME (var));
+ var->print_name ());
argref += SYMBOL_VALUE (var);
ref = value_at (lookup_pointer_type (type), argref);
addr = value_as_address (ref);
case LOC_TYPEDEF:
error (_("Cannot look up value of a typedef `%s'."),
- SYMBOL_PRINT_NAME (var));
+ var->print_name ());
break;
case LOC_BLOCK:
if (overlay_debugging)
addr = symbol_overlayed_address
(BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (var)),
- SYMBOL_OBJ_SECTION (symbol_objfile (var), var));
+ var->obj_section (symbol_objfile (var)));
else
addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (var));
break;
if (regval == NULL)
error (_("Value of register variable not available for `%s'."),
- SYMBOL_PRINT_NAME (var));
+ var->print_name ());
addr = value_as_address (regval);
}
if (regval == NULL)
error (_("Value of register variable not available for `%s'."),
- SYMBOL_PRINT_NAME (var));
+ var->print_name ());
return regval;
}
}
struct obj_section *obj_section;
memset (&lookup_data, 0, sizeof (lookup_data));
- lookup_data.name = SYMBOL_LINKAGE_NAME (var);
+ lookup_data.name = var->linkage_name ();
gdbarch_iterate_over_objfiles_in_search_order
(symbol_arch (var),
can't be NULL. */
gdb_assert (flavour_name != NULL);
error (_("Missing %s symbol \"%s\"."),
- flavour_name, SYMBOL_LINKAGE_NAME (var));
+ flavour_name, var->linkage_name ());
}
- obj_section = MSYMBOL_OBJ_SECTION (lookup_data.result.objfile, msym);
+ obj_section = msym->obj_section (lookup_data.result.objfile);
/* Relocate address, unless there is no section or the variable is
a TLS variable. */
if (obj_section == NULL
case LOC_OPTIMIZED_OUT:
if (is_dynamic_type (type))
- type = resolve_dynamic_type (type, NULL, /* Unused address. */ 0);
+ type = resolve_dynamic_type (type, {}, /* Unused address. */ 0);
return allocate_optimized_out_value (type);
default:
error (_("Cannot look up value of a botched symbol `%s'."),
- SYMBOL_PRINT_NAME (var));
+ var->print_name ());
break;
}
return v;
}
-/* Calls VAR's language la_read_var_value hook with the given arguments. */
+/* Calls VAR's language read_var_value hook with the given arguments. */
struct value *
read_var_value (struct symbol *var, const struct block *var_block,
struct frame_info *frame)
{
- const struct language_defn *lang = language_def (SYMBOL_LANGUAGE (var));
+ const struct language_defn *lang = language_def (var->language ());
gdb_assert (lang != NULL);
- gdb_assert (lang->la_read_var_value != NULL);
- return lang->la_read_var_value (var, var_block, frame);
+ return lang->read_var_value (var, var_block, frame);
}
/* Install default attributes for register values. */
struct value *
default_value_from_register (struct gdbarch *gdbarch, struct type *type,
- int regnum, struct frame_id frame_id)
+ int regnum, struct frame_id frame_id)
{
int len = TYPE_LENGTH (type);
struct value *value = allocate_value (type);
an integral number of registers. Otherwise, you need to do
some fiddling with the last register copied here for little
endian machines. */
- if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG
+ if (type_byte_order (type) == BFD_ENDIAN_BIG
&& len < register_size (gdbarch, regnum))
/* Big-endian, and we want less than full size. */
set_value_offset (value, register_size (gdbarch, regnum) - len);
int reg_len = type_length_units (value_type (regval)) - reg_offset;
/* If the register length is larger than the number of bytes
- remaining to copy, then only copy the appropriate bytes. */
+ remaining to copy, then only copy the appropriate bytes. */
if (reg_len > len)
reg_len = len;
int optim, unavail, ok;
/* The ISA/ABI need to something weird when obtaining the
- specified value from this register. It might need to
- re-order non-adjacent, starting with REGNUM (see MIPS and
- i386). It might need to convert the [float] register into
- the corresponding [integer] type (see Alpha). The assumption
- is that gdbarch_register_to_value populates the entire value
- including the location. */
+ specified value from this register. It might need to
+ re-order non-adjacent, starting with REGNUM (see MIPS and
+ i386). It might need to convert the [float] register into
+ the corresponding [integer] type (see Alpha). The assumption
+ is that gdbarch_register_to_value populates the entire value
+ including the location. */
v = allocate_value (type);
VALUE_LVAL (v) = lval_register;
VALUE_NEXT_FRAME_ID (v) = get_frame_id (get_next_frame_sentinel_okay (frame));
#endif
+void _initialize_findvar ();
void
-_initialize_findvar (void)
+_initialize_findvar ()
{
#if GDB_SELF_TEST
selftests::register_test
projects / thirdparty / binutils-gdb.git / blobdiff