static CORE_ADDR
vax_store_arguments (struct regcache *regcache, int nargs,
struct value **args, CORE_ADDR sp)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
gdb_byte buf[4];
int count = 0;
int i;
/* We create an argument list on the stack, and make the argument
pointer to it. */
/* Push arguments in reverse order. */
for (i = nargs - 1; i >= 0; i--)
{
int len = TYPE_LENGTH (value_enclosing_type (args[i]));
sp -= (len + 3) & ~3;
count += (len + 3) / 4;
write_memory (sp, value_contents_all (args[i]), len);
}
/* Push argument count. */
sp -= 4;
store_unsigned_integer (buf, 4, byte_order, count);
write_memory (sp, buf, 4);
/* Update the argument pointer. */
store_unsigned_integer (buf, 4, byte_order, sp);
regcache_cooked_write (regcache, VAX_AP_REGNUM, buf);
return sp;
}
static CORE_ADDR
m68k_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr, int nargs,
struct value **args, CORE_ADDR sp, int struct_return,
CORE_ADDR struct_addr)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
gdb_byte buf[4];
int i;
/* Push arguments in reverse order. */
for (i = nargs - 1; i >= 0; i--)
{
struct type *value_type = value_enclosing_type (args[i]);
int len = TYPE_LENGTH (value_type);
int container_len = (len + 3) & ~3;
int offset;
/* Non-scalars bigger than 4 bytes are left aligned, others are
right aligned. */
if ((TYPE_CODE (value_type) == TYPE_CODE_STRUCT
|| TYPE_CODE (value_type) == TYPE_CODE_UNION
|| TYPE_CODE (value_type) == TYPE_CODE_ARRAY)
&& len > 4)
offset = 0;
else
offset = container_len - len;
sp -= container_len;
write_memory (sp + offset, value_contents_all (args[i]), len);
}
/* Store struct value address. */
if (struct_return)
{
store_unsigned_integer (buf, 4, byte_order, struct_addr);
regcache_cooked_write (regcache, tdep->struct_value_regnum, buf);
}
/* Store return address. */
sp -= 4;
store_unsigned_integer (buf, 4, byte_order, bp_addr);
write_memory (sp, buf, 4);
/* Finally, update the stack pointer... */
store_unsigned_integer (buf, 4, byte_order, sp);
regcache_cooked_write (regcache, M68K_SP_REGNUM, buf);
/* ...and fake a frame pointer. */
regcache_cooked_write (regcache, M68K_FP_REGNUM, buf);
/* DWARF2/GCC uses the stack address *before* the function call as a
frame's CFA. */
return sp + 8;
}
int
c_value_print (struct value *val, struct ui_file *stream, int format,
enum val_prettyprint pretty)
{
struct type *type, *real_type;
int full, top, using_enc;
/* If it is a pointer, indicate what it points to.
Print type also if it is a reference.
C++: if it is a member pointer, we will take care
of that when we print it. */
type = check_typedef (value_type (val));
if (TYPE_CODE (type) == TYPE_CODE_PTR
|| TYPE_CODE (type) == TYPE_CODE_REF)
{
/* Hack: remove (char *) for char strings. Their
type is indicated by the quoted string anyway. */
if (TYPE_CODE (type) == TYPE_CODE_PTR
&& TYPE_NAME (type) == NULL
&& TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL
&& strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0)
{
/* Print nothing */
}
else if (objectprint && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
{
if (TYPE_CODE(type) == TYPE_CODE_REF)
{
/* Copy value, change to pointer, so we don't get an
* error about a non-pointer type in value_rtti_target_type
*/
struct value *temparg;
temparg=value_copy(val);
deprecated_set_value_type (temparg, lookup_pointer_type (TYPE_TARGET_TYPE(type)));
val=temparg;
}
/* Pointer to class, check real type of object */
fprintf_filtered (stream, "(");
real_type = value_rtti_target_type (val, &full, &top, &using_enc);
if (real_type)
{
/* RTTI entry found */
if (TYPE_CODE (type) == TYPE_CODE_PTR)
{
/* create a pointer type pointing to the real type */
type = lookup_pointer_type (real_type);
}
else
{
/* create a reference type referencing the real type */
type = lookup_reference_type (real_type);
}
/* JYG: Need to adjust pointer value. */
/* NOTE: cagney/2005-01-02: THIS IS BOGUS. */
value_contents_writeable (val)[0] -= top;
/* Note: When we look up RTTI entries, we don't get any
information on const or volatile attributes */
}
type_print (type, "", stream, -1);
fprintf_filtered (stream, ") ");
}
else
{
/* normal case */
fprintf_filtered (stream, "(");
type_print (value_type (val), "", stream, -1);
fprintf_filtered (stream, ") ");
}
}
/* APPLE LOCAL begin variable initialized status. */
if (value_var_status (val) == 0)
fprintf_filtered (stream, " [uninitialized] ");
/* APPLE LOCAL end variable initialized status. */
if (objectprint && (TYPE_CODE (type) == TYPE_CODE_CLASS))
{
/* Attempt to determine real type of object */
real_type = value_rtti_type (val, &full, &top, &using_enc);
if (real_type)
{
/* We have RTTI information, so use it */
val = value_full_object (val, real_type, full, top, using_enc);
fprintf_filtered (stream, "(%s%s) ",
TYPE_NAME (real_type),
full ? "" : _(" [incomplete object]"));
/* Print out object: enclosing type is same as real_type if full */
return val_print (value_enclosing_type (val),
value_contents_all (val), 0,
VALUE_ADDRESS (val), stream, format, 1, 0, pretty);
/* Note: When we look up RTTI entries, we don't get any information on
const or volatile attributes */
}
else if (type != check_typedef (value_enclosing_type (val)))
{
/* No RTTI information, so let's do our best */
fprintf_filtered (stream, "(%s ?) ",
TYPE_NAME (value_enclosing_type (val)));
return val_print (value_enclosing_type (val),
value_contents_all (val), 0,
VALUE_ADDRESS (val), stream, format, 1, 0, pretty);
}
/* Otherwise, we end up at the return outside this "if" */
}
real_type = get_closure_dynamic_type (val);
if (real_type)
type = real_type;
return val_print (type, value_contents_all (val),
value_embedded_offset (val),
VALUE_ADDRESS (val) + value_offset (val),
stream, format, 1, 0, pretty);
}
static CORE_ADDR
i386_darwin_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr,
int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
gdb_byte buf[4];
int i;
int write_pass;
/* Determine the total space required for arguments and struct
return address in a first pass, then push arguments in a second pass. */
for (write_pass = 0; write_pass < 2; write_pass++)
{
int args_space = 0;
int num_m128 = 0;
if (struct_return)
{
if (write_pass)
{
/* Push value address. */
store_unsigned_integer (buf, 4, byte_order, struct_addr);
write_memory (sp, buf, 4);
}
args_space += 4;
}
for (i = 0; i < nargs; i++)
{
struct type *arg_type = value_enclosing_type (args[i]);
if (i386_m128_p (arg_type) && num_m128 < 4)
{
if (write_pass)
{
const gdb_byte *val = value_contents_all (args[i]);
regcache_raw_write
(regcache, I387_MM0_REGNUM(tdep) + num_m128, val);
}
num_m128++;
}
else
{
args_space = align_up (args_space,
i386_darwin_arg_type_alignment (arg_type));
if (write_pass)
write_memory (sp + args_space,
value_contents_all (args[i]),
TYPE_LENGTH (arg_type));
/* The System V ABI says that:
"An argument's size is increased, if necessary, to make it a
multiple of [32-bit] words. This may require tail padding,
depending on the size of the argument."
This makes sure the stack stays word-aligned. */
args_space += align_up (TYPE_LENGTH (arg_type), 4);
}
}
/* Darwin i386 ABI:
1. The caller ensures that the stack is 16-byte aligned at the point
of the function call. */
if (!write_pass)
sp = align_down (sp - args_space, 16);
}
/* Store return address. */
sp -= 4;
store_unsigned_integer (buf, 4, byte_order, bp_addr);
write_memory (sp, buf, 4);
/* Finally, update the stack pointer... */
store_unsigned_integer (buf, 4, byte_order, sp);
regcache_cooked_write (regcache, I386_ESP_REGNUM, buf);
/* ...and fake a frame pointer. */
regcache_cooked_write (regcache, I386_EBP_REGNUM, buf);
/* MarkK wrote: This "+ 8" is all over the place:
(i386_frame_this_id, i386_sigtramp_frame_this_id,
i386_dummy_id). It's there, since all frame unwinders for
a given target have to agree (within a certain margin) on the
definition of the stack address of a frame. Otherwise frame id
comparison might not work correctly. Since DWARF2/GCC uses the
stack address *before* the function call as a frame's CFA. On
the i386, when %ebp is used as a frame pointer, the offset
between the contents %ebp and the CFA as defined by GCC. */
return sp + 8;
}
int
c_value_print (struct value *val, struct ui_file *stream,
const struct value_print_options *options)
{
struct type *type, *real_type, *val_type;
int full, top, using_enc;
struct value_print_options opts = *options;
opts.deref_ref = 1;
/* If it is a pointer, indicate what it points to.
Print type also if it is a reference.
C++: if it is a member pointer, we will take care
of that when we print it. */
/* Preserve the original type before stripping typedefs. We prefer
to pass down the original type when possible, but for local
checks it is better to look past the typedefs. */
val_type = value_type (val);
type = check_typedef (val_type);
if (TYPE_CODE (type) == TYPE_CODE_PTR
|| TYPE_CODE (type) == TYPE_CODE_REF)
{
/* Hack: remove (char *) for char strings. Their
type is indicated by the quoted string anyway.
(Don't use c_textual_element_type here; quoted strings
are always exactly (char *), (wchar_t *), or the like. */
if (TYPE_CODE (val_type) == TYPE_CODE_PTR
&& TYPE_NAME (val_type) == NULL
&& TYPE_NAME (TYPE_TARGET_TYPE (val_type)) != NULL
&& (strcmp (TYPE_NAME (TYPE_TARGET_TYPE (val_type)), "char") == 0
|| textual_name (TYPE_NAME (TYPE_TARGET_TYPE (val_type)))))
{
/* Print nothing */
}
else if (options->objectprint
&& (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
{
if (TYPE_CODE(type) == TYPE_CODE_REF)
{
/* Copy value, change to pointer, so we don't get an
* error about a non-pointer type in value_rtti_target_type
*/
struct value *temparg;
temparg=value_copy(val);
deprecated_set_value_type (temparg, lookup_pointer_type (TYPE_TARGET_TYPE(type)));
val=temparg;
}
/* Pointer to class, check real type of object */
fprintf_filtered (stream, "(");
real_type = value_rtti_target_type (val, &full, &top, &using_enc);
if (real_type)
{
/* RTTI entry found */
if (TYPE_CODE (type) == TYPE_CODE_PTR)
{
/* create a pointer type pointing to the real type */
type = lookup_pointer_type (real_type);
}
else
{
/* create a reference type referencing the real type */
type = lookup_reference_type (real_type);
}
/* JYG: Need to adjust pointer value. */
/* NOTE: cagney/2005-01-02: THIS IS BOGUS. */
value_contents_writeable (val)[0] -= top;
/* Note: When we look up RTTI entries, we don't get any
information on const or volatile attributes */
}
type_print (type, "", stream, -1);
fprintf_filtered (stream, ") ");
val_type = type;
}
else
{
/* normal case */
fprintf_filtered (stream, "(");
type_print (value_type (val), "", stream, -1);
fprintf_filtered (stream, ") ");
}
}
if (!value_initialized (val))
fprintf_filtered (stream, " [uninitialized] ");
if (options->objectprint && (TYPE_CODE (type) == TYPE_CODE_CLASS))
{
/* Attempt to determine real type of object */
real_type = value_rtti_type (val, &full, &top, &using_enc);
if (real_type)
{
/* We have RTTI information, so use it */
val = value_full_object (val, real_type, full, top, using_enc);
fprintf_filtered (stream, "(%s%s) ",
TYPE_NAME (real_type),
full ? "" : _(" [incomplete object]"));
/* Print out object: enclosing type is same as real_type if full */
return val_print (value_enclosing_type (val),
value_contents_all (val), 0,
value_address (val), stream, 0,
&opts, current_language);
/* Note: When we look up RTTI entries, we don't get any information on
const or volatile attributes */
}
else if (type != check_typedef (value_enclosing_type (val)))
{
/* No RTTI information, so let's do our best */
fprintf_filtered (stream, "(%s ?) ",
TYPE_NAME (value_enclosing_type (val)));
return val_print (value_enclosing_type (val),
value_contents_all (val), 0,
value_address (val), stream, 0,
&opts, current_language);
}
/* Otherwise, we end up at the return outside this "if" */
}
return val_print (val_type, value_contents_all (val),
value_embedded_offset (val),
value_address (val),
stream, 0, &opts, current_language);
}
static struct type *
hpacc_value_rtti_type (struct value *v, int *full, int *top, int *using_enc)
{
struct type *known_type;
struct type *rtti_type;
CORE_ADDR coreptr;
struct value *vp;
int using_enclosing = 0;
long top_offset = 0;
char rtti_type_name[256];
if (full)
*full = 0;
if (top)
*top = -1;
if (using_enc)
*using_enc = 0;
/* Get declared type */
known_type = value_type (v);
CHECK_TYPEDEF (known_type);
/* RTTI works only or class objects */
if (TYPE_CODE (known_type) != TYPE_CODE_CLASS)
return NULL;
/* If neither the declared type nor the enclosing type of the
* value structure has a HP ANSI C++ style virtual table,
* we can't do anything. */
if (!TYPE_HAS_VTABLE (known_type))
{
known_type = value_enclosing_type (v);
CHECK_TYPEDEF (known_type);
if ((TYPE_CODE (known_type) != TYPE_CODE_CLASS) ||
!TYPE_HAS_VTABLE (known_type))
return NULL; /* No RTTI, or not HP-compiled types */
CHECK_TYPEDEF (known_type);
using_enclosing = 1;
}
if (using_enclosing && using_enc)
*using_enc = 1;
/* First get the virtual table address */
coreptr = *(CORE_ADDR *) ((value_contents_all (v))
+ value_offset (v)
+ (using_enclosing
? 0
: value_embedded_offset (v)));
if (coreptr == 0)
/* return silently -- maybe called on gdb-generated value */
return NULL;
/* Fetch the top offset of the object */
/* FIXME possible 32x64 problem with pointer size & arithmetic */
vp = value_at (builtin_type_int,
coreptr + 4 * HP_ACC_TOP_OFFSET_OFFSET);
top_offset = value_as_long (vp);
if (top)
*top = top_offset;
/* Fetch the typeinfo pointer */
/* FIXME possible 32x64 problem with pointer size & arithmetic */
vp = value_at (builtin_type_int, coreptr + 4 * HP_ACC_TYPEINFO_OFFSET);
/* Indirect through the typeinfo pointer and retrieve the pointer
* to the string name */
coreptr = *(CORE_ADDR *) (value_contents (vp));
if (!coreptr)
error (_("Retrieved null typeinfo pointer in trying to determine "
"run-time type"));
/* 4 -> offset of name field */
vp = value_at (builtin_type_int, coreptr + 4);
/* FIXME possible 32x64 problem */
coreptr = *(CORE_ADDR *) (value_contents (vp));
read_memory_string (coreptr, rtti_type_name, 256);
if (strlen (rtti_type_name) == 0)
error (_("Retrieved null type name from typeinfo"));
/* search for type */
rtti_type = lookup_typename (rtti_type_name, (struct block *) 0, 1);
if (!rtti_type)
error (_("Could not find run-time type: invalid type name %s in typeinfo??"),
rtti_type_name);
CHECK_TYPEDEF (rtti_type);
#if 0
printf ("RTTI type name %s, tag %s, full? %d\n", TYPE_NAME (rtti_type),
TYPE_TAG_NAME (rtti_type), full ? *full : -1);
#endif
/* Check whether we have the entire object */
if (full /* Non-null pointer passed */
&&
/* Either we checked on the whole object in hand and found the
top offset to be zero */
(((top_offset == 0) &&
using_enclosing &&
TYPE_LENGTH (known_type) == TYPE_LENGTH (rtti_type))
||
/* Or we checked on the embedded object and top offset was the
same as the embedded offset */
((top_offset == value_embedded_offset (v)) &&
!using_enclosing &&
TYPE_LENGTH (value_enclosing_type (v)) == TYPE_LENGTH (rtti_type))))
*full = 1;
return rtti_type;
}
