/* Perform non-arithmetic operations on values, for GDB.
- Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994
+ Free Software Foundation, Inc.
This file is part of GDB.
#include "language.h"
#include <errno.h>
+#include <string.h>
/* Local functions. */
-static int
-typecmp PARAMS ((int staticp, struct type *t1[], value t2[]));
+static int typecmp PARAMS ((int staticp, struct type *t1[], value_ptr t2[]));
-static CORE_ADDR
-find_function_addr PARAMS ((value, struct type **));
+static CORE_ADDR find_function_addr PARAMS ((value_ptr, struct type **));
-static CORE_ADDR
-value_push PARAMS ((CORE_ADDR, value));
+static CORE_ADDR value_push PARAMS ((CORE_ADDR, value_ptr));
-static CORE_ADDR
-value_arg_push PARAMS ((CORE_ADDR, value));
+static value_ptr search_struct_field PARAMS ((char *, value_ptr, int,
+ struct type *, int));
-static value
-search_struct_field PARAMS ((char *, value, int, struct type *, int));
+static value_ptr search_struct_method PARAMS ((char *, value_ptr *,
+ value_ptr *,
+ int, int *, struct type *));
-static value
-search_struct_method PARAMS ((char *, value *, value *, int, int *,
- struct type *));
+static int check_field_in PARAMS ((struct type *, const char *));
-static int
-check_field_in PARAMS ((struct type *, const char *));
+static CORE_ADDR allocate_space_in_inferior PARAMS ((int));
-static CORE_ADDR
-allocate_space_in_inferior PARAMS ((int));
+static value_ptr cast_into_complex PARAMS ((struct type *, value_ptr));
+
+#define VALUE_SUBSTRING_START(VAL) VALUE_FRAME(VAL)
\f
/* Allocate NBYTES of space in the inferior using the inferior's malloc
allocate_space_in_inferior (len)
int len;
{
- register value val;
+ register value_ptr val;
register struct symbol *sym;
struct minimal_symbol *msymbol;
struct type *type;
- value blocklen;
+ value_ptr blocklen;
LONGEST maddr;
/* Find the address of malloc in the inferior. */
}
else
{
- msymbol = lookup_minimal_symbol ("malloc", (struct objfile *) NULL);
+ msymbol = lookup_minimal_symbol ("malloc", NULL, NULL);
if (msymbol != NULL)
{
type = lookup_pointer_type (builtin_type_char);
and if ARG2 is an lvalue it can be cast into anything at all. */
/* In C++, casts may change pointer or object representations. */
-value
+value_ptr
value_cast (type, arg2)
struct type *type;
- register value arg2;
+ register value_ptr arg2;
{
- register enum type_code code1;
+ register enum type_code code1 = TYPE_CODE (type);
register enum type_code code2;
register int scalar;
- /* Coerce arrays but not enums. Enums will work as-is
- and coercing them would cause an infinite recursion. */
- if (TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_ENUM)
- COERCE_ARRAY (arg2);
+ if (VALUE_TYPE (arg2) == type)
+ return arg2;
+
+ COERCE_REF(arg2);
+
+ /* A cast to an undetermined-length array_type, such as (TYPE [])OBJECT,
+ is treated like a cast to (TYPE [N])OBJECT,
+ where N is sizeof(OBJECT)/sizeof(TYPE). */
+ if (code1 == TYPE_CODE_ARRAY
+ && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0
+ && TYPE_ARRAY_UPPER_BOUND_TYPE (type) == BOUND_CANNOT_BE_DETERMINED)
+ {
+ struct type *element_type = TYPE_TARGET_TYPE (type);
+ struct type *range_type = TYPE_INDEX_TYPE (type);
+ int low_bound = TYPE_LOW_BOUND (range_type);
+ int val_length = TYPE_LENGTH (VALUE_TYPE (arg2));
+ int new_length = val_length / TYPE_LENGTH (element_type);
+ if (val_length % TYPE_LENGTH (element_type) != 0)
+ warning("array element type size does not divide object size in cast");
+ /* FIXME-type-allocation: need a way to free this type when we are
+ done with it. */
+ range_type = create_range_type ((struct type *) NULL,
+ TYPE_TARGET_TYPE (range_type),
+ low_bound, new_length + low_bound - 1);
+ VALUE_TYPE (arg2) = create_array_type ((struct type *) NULL,
+ element_type, range_type);
+ return arg2;
+ }
+
+ if (current_language->c_style_arrays
+ && (VALUE_REPEATED (arg2)
+ || TYPE_CODE (VALUE_TYPE (arg2)) == TYPE_CODE_ARRAY))
+ arg2 = value_coerce_array (arg2);
+
+ if (TYPE_CODE (VALUE_TYPE (arg2)) == TYPE_CODE_FUNC)
+ arg2 = value_coerce_function (arg2);
+
+ COERCE_VARYING_ARRAY (arg2);
- code1 = TYPE_CODE (type);
code2 = TYPE_CODE (VALUE_TYPE (arg2));
+
+ if (code1 == TYPE_CODE_COMPLEX)
+ return cast_into_complex (type, arg2);
+ if (code1 == TYPE_CODE_BOOL)
+ code1 = TYPE_CODE_INT;
+ if (code2 == TYPE_CODE_BOOL)
+ code2 = TYPE_CODE_INT;
+
scalar = (code2 == TYPE_CODE_INT || code2 == TYPE_CODE_FLT
- || code2 == TYPE_CODE_ENUM);
+ || code2 == TYPE_CODE_ENUM || code2 == TYPE_CODE_RANGE);
if ( code1 == TYPE_CODE_STRUCT
&& code2 == TYPE_CODE_STRUCT
/* Look in the type of the source to see if it contains the
type of the target as a superclass. If so, we'll need to
offset the object in addition to changing its type. */
- value v = search_struct_field (type_name_no_tag (type),
- arg2, 0, VALUE_TYPE (arg2), 1);
+ value_ptr v = search_struct_field (type_name_no_tag (type),
+ arg2, 0, VALUE_TYPE (arg2), 1);
if (v)
{
VALUE_TYPE (v) = type;
}
if (code1 == TYPE_CODE_FLT && scalar)
return value_from_double (type, value_as_double (arg2));
- else if ((code1 == TYPE_CODE_INT || code1 == TYPE_CODE_ENUM)
+ else if ((code1 == TYPE_CODE_INT || code1 == TYPE_CODE_ENUM
+ || code1 == TYPE_CODE_RANGE)
&& (scalar || code2 == TYPE_CODE_PTR))
return value_from_longest (type, value_as_long (arg2));
else if (TYPE_LENGTH (type) == TYPE_LENGTH (VALUE_TYPE (arg2)))
&& TYPE_CODE (t2) == TYPE_CODE_STRUCT
&& TYPE_NAME (t1) != 0) /* if name unknown, can't have supercl */
{
- value v = search_struct_field (type_name_no_tag (t1),
- value_ind (arg2), 0, t2, 1);
+ value_ptr v = search_struct_field (type_name_no_tag (t1),
+ value_ind (arg2), 0, t2, 1);
if (v)
{
v = value_addr (v);
VALUE_TYPE (arg2) = type;
return arg2;
}
+ else if (chill_varying_type (type))
+ {
+ struct type *range1, *range2, *eltype1, *eltype2;
+ value_ptr val;
+ int count1, count2;
+ char *valaddr, *valaddr_data;
+ if (code2 == TYPE_CODE_BITSTRING)
+ error ("not implemented: converting bitstring to varying type");
+ if ((code2 != TYPE_CODE_ARRAY && code2 != TYPE_CODE_STRING)
+ || (eltype1 = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 1)),
+ eltype2 = TYPE_TARGET_TYPE (VALUE_TYPE (arg2)),
+ (TYPE_LENGTH (eltype1) != TYPE_LENGTH (eltype2)
+ /* || TYPE_CODE (eltype1) != TYPE_CODE (eltype2) */ )))
+ error ("Invalid conversion to varying type");
+ range1 = TYPE_FIELD_TYPE (TYPE_FIELD_TYPE (type, 1), 0);
+ range2 = TYPE_FIELD_TYPE (VALUE_TYPE (arg2), 0);
+ count1 = TYPE_HIGH_BOUND (range1) - TYPE_LOW_BOUND (range1) + 1;
+ count2 = TYPE_HIGH_BOUND (range2) - TYPE_LOW_BOUND (range2) + 1;
+ if (count2 > count1)
+ error ("target varying type is too small");
+ val = allocate_value (type);
+ valaddr = VALUE_CONTENTS_RAW (val);
+ valaddr_data = valaddr + TYPE_FIELD_BITPOS (type, 1) / 8;
+ /* Set val's __var_length field to count2. */
+ store_signed_integer (valaddr, TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)),
+ count2);
+ /* Set the __var_data field to count2 elements copied from arg2. */
+ memcpy (valaddr_data, VALUE_CONTENTS (arg2),
+ count2 * TYPE_LENGTH (eltype2));
+ /* Zero the rest of the __var_data field of val. */
+ memset (valaddr_data + count2 * TYPE_LENGTH (eltype2), '\0',
+ (count1 - count2) * TYPE_LENGTH (eltype2));
+ return val;
+ }
else if (VALUE_LVAL (arg2) == lval_memory)
{
return value_at_lazy (type, VALUE_ADDRESS (arg2) + VALUE_OFFSET (arg2));
/* Create a value of type TYPE that is zero, and return it. */
-value
+value_ptr
value_zero (type, lv)
struct type *type;
enum lval_type lv;
{
- register value val = allocate_value (type);
+ register value_ptr val = allocate_value (type);
memset (VALUE_CONTENTS (val), 0, TYPE_LENGTH (type));
VALUE_LVAL (val) = lv;
is tested in the VALUE_CONTENTS macro, which is used if and when
the contents are actually required. */
-value
+value_ptr
value_at (type, addr)
struct type *type;
CORE_ADDR addr;
{
- register value val = allocate_value (type);
+ register value_ptr val;
+
+ if (TYPE_CODE (type) == TYPE_CODE_VOID)
+ error ("Attempt to dereference a generic pointer.");
+
+ val = allocate_value (type);
read_memory (addr, VALUE_CONTENTS_RAW (val), TYPE_LENGTH (type));
/* Return a lazy value with type TYPE located at ADDR (cf. value_at). */
-value
+value_ptr
value_at_lazy (type, addr)
struct type *type;
CORE_ADDR addr;
{
- register value val = allocate_value (type);
+ register value_ptr val;
+
+ if (TYPE_CODE (type) == TYPE_CODE_VOID)
+ error ("Attempt to dereference a generic pointer.");
+
+ val = allocate_value (type);
VALUE_LVAL (val) = lval_memory;
VALUE_ADDRESS (val) = addr;
int
value_fetch_lazy (val)
- register value val;
+ register value_ptr val;
{
CORE_ADDR addr = VALUE_ADDRESS (val) + VALUE_OFFSET (val);
/* Store the contents of FROMVAL into the location of TOVAL.
Return a new value with the location of TOVAL and contents of FROMVAL. */
-value
+value_ptr
value_assign (toval, fromval)
- register value toval, fromval;
+ register value_ptr toval, fromval;
{
- register struct type *type = VALUE_TYPE (toval);
- register value val;
+ register struct type *type;
+ register value_ptr val;
char raw_buffer[MAX_REGISTER_RAW_SIZE];
int use_buffer = 0;
+ if (!toval->modifiable)
+ error ("Left operand of assignment is not a modifiable lvalue.");
+
COERCE_ARRAY (fromval);
COERCE_REF (toval);
+ type = VALUE_TYPE (toval);
if (VALUE_LVAL (toval) != lval_internalvar)
fromval = value_cast (type, fromval);
+ MAX_REGISTER_RAW_SIZE);
int regno;
- FRAME frame;
+ struct frame_info *frame;
/* Figure out which frame this is in currently. */
for (frame = get_current_frame ();
default:
- error ("Left side of = operation is not an lvalue.");
+ error ("Left operand of assignment is not an lvalue.");
}
/* Return a value just like TOVAL except with the contents of FROMVAL
/* Extend a value VAL to COUNT repetitions of its type. */
-value
+value_ptr
value_repeat (arg1, count)
- value arg1;
+ value_ptr arg1;
int count;
{
- register value val;
+ register value_ptr val;
if (VALUE_LVAL (arg1) != lval_memory)
error ("Only values in memory can be extended with '@'.");
if (count < 1)
error ("Invalid number %d of repetitions.", count);
+ if (VALUE_REPEATED (arg1))
+ error ("Cannot create artificial arrays of artificial arrays.");
val = allocate_repeat_value (VALUE_TYPE (arg1), count);
return val;
}
-value
+value_ptr
value_of_variable (var, b)
struct symbol *var;
struct block *b;
{
- value val;
- FRAME fr;
+ value_ptr val;
+ struct frame_info *frame;
if (b == NULL)
/* Use selected frame. */
- fr = NULL;
+ frame = NULL;
else
{
- fr = block_innermost_frame (b);
- if (fr == NULL && symbol_read_needs_frame (var))
+ frame = block_innermost_frame (b);
+ if (frame == NULL && symbol_read_needs_frame (var))
{
if (BLOCK_FUNCTION (b) != NULL
&& SYMBOL_NAME (BLOCK_FUNCTION (b)) != NULL)
error ("No frame is currently executing in specified block");
}
}
- val = read_var_value (var, fr);
+ val = read_var_value (var, frame);
if (val == 0)
error ("Address of symbol \"%s\" is unknown.", SYMBOL_SOURCE_NAME (var));
return val;
the coercion to pointer type.
*/
-value
+value_ptr
value_coerce_array (arg1)
- value arg1;
+ value_ptr arg1;
{
register struct type *type;
/* Given a value which is a function, return a value which is a pointer
to it. */
-value
+value_ptr
value_coerce_function (arg1)
- value arg1;
+ value_ptr arg1;
{
if (VALUE_LVAL (arg1) != lval_memory)
/* Return a pointer value for the object for which ARG1 is the contents. */
-value
+value_ptr
value_addr (arg1)
- value arg1;
+ value_ptr arg1;
{
struct type *type = VALUE_TYPE (arg1);
if (TYPE_CODE (type) == TYPE_CODE_REF)
/* Copy the value, but change the type from (T&) to (T*).
We keep the same location information, which is efficient,
and allows &(&X) to get the location containing the reference. */
- value arg2 = value_copy (arg1);
+ value_ptr arg2 = value_copy (arg1);
VALUE_TYPE (arg2) = lookup_pointer_type (TYPE_TARGET_TYPE (type));
return arg2;
}
- if (VALUE_REPEATED (arg1)
- || TYPE_CODE (type) == TYPE_CODE_ARRAY)
+ if (current_language->c_style_arrays
+ && (VALUE_REPEATED (arg1)
+ || TYPE_CODE (type) == TYPE_CODE_ARRAY))
return value_coerce_array (arg1);
if (TYPE_CODE (type) == TYPE_CODE_FUNC)
return value_coerce_function (arg1);
/* Given a value of a pointer type, apply the C unary * operator to it. */
-value
+value_ptr
value_ind (arg1)
- value arg1;
+ value_ptr arg1;
{
COERCE_ARRAY (arg1);
CORE_ADDR
push_word (sp, word)
CORE_ADDR sp;
- REGISTER_TYPE word;
+ unsigned LONGEST word;
{
- register int len = sizeof (REGISTER_TYPE);
+ register int len = REGISTER_SIZE;
char buffer[MAX_REGISTER_RAW_SIZE];
store_unsigned_integer (buffer, len, word);
static CORE_ADDR
value_push (sp, arg)
register CORE_ADDR sp;
- value arg;
+ value_ptr arg;
{
register int len = TYPE_LENGTH (VALUE_TYPE (arg));
}
/* Perform the standard coercions that are specified
- for arguments to be passed to C functions. */
+ for arguments to be passed to C functions.
-value
-value_arg_coerce (arg)
- value arg;
-{
- register struct type *type;
+ If PARAM_TYPE is non-NULL, it is the expected parameter type. */
- /* FIXME: We should coerce this according to the prototype (if we have
- one). Right now we do a little bit of this in typecmp(), but that
- doesn't always get called. For example, if passing a ref to a function
- without a prototype, we probably should de-reference it. Currently
- we don't. */
+static value_ptr
+value_arg_coerce (arg, param_type)
+ value_ptr arg;
+ struct type *param_type;
+{
+ register struct type *type = param_type ? param_type : VALUE_TYPE (arg);
- if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ENUM)
- arg = value_cast (builtin_type_unsigned_int, arg);
+ switch (TYPE_CODE (type))
+ {
+ case TYPE_CODE_REF:
+ if (TYPE_CODE (VALUE_TYPE (arg)) != TYPE_CODE_REF)
+ {
+ arg = value_addr (arg);
+ VALUE_TYPE (arg) = param_type;
+ return arg;
+ }
+ break;
+ case TYPE_CODE_INT:
+ case TYPE_CODE_CHAR:
+ case TYPE_CODE_BOOL:
+ case TYPE_CODE_ENUM:
+ if (TYPE_LENGTH (type) < TYPE_LENGTH (builtin_type_int))
+ type = builtin_type_int;
+ break;
+ case TYPE_CODE_FLT:
+ if (TYPE_LENGTH (type) < TYPE_LENGTH (builtin_type_double))
+ type = builtin_type_double;
+ break;
+ case TYPE_CODE_FUNC:
+ type = lookup_pointer_type (type);
+ break;
+ }
#if 1 /* FIXME: This is only a temporary patch. -fnf */
- if (VALUE_REPEATED (arg)
- || TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ARRAY)
+ if (current_language->c_style_arrays
+ && (VALUE_REPEATED (arg)
+ || TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ARRAY))
arg = value_coerce_array (arg);
- if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_FUNC)
- arg = value_coerce_function (arg);
#endif
- type = VALUE_TYPE (arg);
-
- if (TYPE_CODE (type) == TYPE_CODE_INT
- && TYPE_LENGTH (type) < TYPE_LENGTH (builtin_type_int))
- return value_cast (builtin_type_int, arg);
-
- if (TYPE_CODE (type) == TYPE_CODE_FLT
- && TYPE_LENGTH (type) < TYPE_LENGTH (builtin_type_double))
- return value_cast (builtin_type_double, arg);
-
- return arg;
-}
-
-/* Push the value ARG, first coercing it as an argument
- to a C function. */
-
-static CORE_ADDR
-value_arg_push (sp, arg)
- register CORE_ADDR sp;
- value arg;
-{
- return value_push (sp, value_arg_coerce (arg));
+ return value_cast (type, arg);
}
/* Determine a function's address and its return type from its value.
static CORE_ADDR
find_function_addr (function, retval_type)
- value function;
+ value_ptr function;
struct type **retval_type;
{
register struct type *ftype = VALUE_TYPE (function);
funaddr = value_as_pointer (function);
if (TYPE_CODE (TYPE_TARGET_TYPE (ftype)) == TYPE_CODE_FUNC
|| TYPE_CODE (TYPE_TARGET_TYPE (ftype)) == TYPE_CODE_METHOD)
- value_type = TYPE_TARGET_TYPE (TYPE_TARGET_TYPE (ftype));
+ {
+#ifdef CONVERT_FROM_FUNC_PTR_ADDR
+ /* FIXME: This is a workaround for the unusual function
+ pointer representation on the RS/6000, see comment
+ in config/rs6000/tm-rs6000.h */
+ funaddr = CONVERT_FROM_FUNC_PTR_ADDR (funaddr);
+#endif
+ value_type = TYPE_TARGET_TYPE (TYPE_TARGET_TYPE (ftype));
+ }
else
value_type = builtin_type_int;
}
FUNCTION is a value, the function to be called.
Returns a value representing what the function returned.
May fail to return, if a breakpoint or signal is hit
- during the execution of the function. */
+ during the execution of the function.
+
+ ARGS is modified to contain coerced values. */
-value
+value_ptr
call_function_by_hand (function, nargs, args)
- value function;
+ value_ptr function;
int nargs;
- value *args;
+ value_ptr *args;
{
register CORE_ADDR sp;
register int i;
CORE_ADDR start_sp;
- /* CALL_DUMMY is an array of words (REGISTER_TYPE), but each word
- is in host byte order. It is switched to target byte order before calling
- FIX_CALL_DUMMY. */
- static REGISTER_TYPE dummy[] = CALL_DUMMY;
- REGISTER_TYPE dummy1[sizeof dummy / sizeof (REGISTER_TYPE)];
+ /* CALL_DUMMY is an array of words (REGISTER_SIZE), but each word
+ is in host byte order. Before calling FIX_CALL_DUMMY, we byteswap it
+ and remove any extra bytes which might exist because unsigned LONGEST is
+ bigger than REGISTER_SIZE. */
+ static unsigned LONGEST dummy[] = CALL_DUMMY;
+ char dummy1[REGISTER_SIZE * sizeof dummy / sizeof (unsigned LONGEST)];
CORE_ADDR old_sp;
struct type *value_type;
unsigned char struct_return;
CORE_ADDR funaddr;
int using_gcc;
CORE_ADDR real_pc;
+ struct type *ftype = SYMBOL_TYPE (function);
if (!target_has_execution)
noprocess();
old_sp = sp = read_sp ();
#if 1 INNER_THAN 2 /* Stack grows down */
- sp -= sizeof dummy;
+ sp -= sizeof dummy1;
start_sp = sp;
#else /* Stack grows up */
start_sp = sp;
- sp += sizeof dummy;
+ sp += sizeof dummy1;
#endif
funaddr = find_function_addr (function, &value_type);
{
struct block *b = block_for_pc (funaddr);
/* If compiled without -g, assume GCC. */
- using_gcc = b == NULL || BLOCK_GCC_COMPILED (b);
+ using_gcc = b == NULL ? 0 : BLOCK_GCC_COMPILED (b);
}
/* Are we returning a value using a structure return or a normal
/* Create a call sequence customized for this function
and the number of arguments for it. */
- for (i = 0; i < sizeof dummy / sizeof (REGISTER_TYPE); i++)
- store_unsigned_integer (&dummy1[i], sizeof (REGISTER_TYPE),
+ for (i = 0; i < sizeof dummy / sizeof (dummy[0]); i++)
+ store_unsigned_integer (&dummy1[i * REGISTER_SIZE],
+ REGISTER_SIZE,
(unsigned LONGEST)dummy[i]);
#ifdef GDB_TARGET_IS_HPPA
#endif
#if CALL_DUMMY_LOCATION == ON_STACK
- write_memory (start_sp, (char *)dummy1, sizeof dummy);
+ write_memory (start_sp, (char *)dummy1, sizeof dummy1);
#endif /* On stack. */
#if CALL_DUMMY_LOCATION == BEFORE_TEXT_END
extern CORE_ADDR text_end;
static checked = 0;
if (!checked)
- for (start_sp = text_end - sizeof dummy; start_sp < text_end; ++start_sp)
+ for (start_sp = text_end - sizeof dummy1; start_sp < text_end; ++start_sp)
if (read_memory_integer (start_sp, 1) != 0)
error ("text segment full -- no place to put call");
checked = 1;
sp = old_sp;
- real_pc = text_end - sizeof dummy;
- write_memory (real_pc, (char *)dummy1, sizeof dummy);
+ real_pc = text_end - sizeof dummy1;
+ write_memory (real_pc, (char *)dummy1, sizeof dummy1);
}
#endif /* Before text_end. */
int errcode;
sp = old_sp;
real_pc = text_end;
- errcode = target_write_memory (real_pc, (char *)dummy1, sizeof dummy);
+ errcode = target_write_memory (real_pc, (char *)dummy1, sizeof dummy1);
if (errcode != 0)
error ("Cannot write text segment -- call_function failed");
}
sp = old_sp; /* It really is used, for some ifdef's... */
#endif
-#ifdef STACK_ALIGN
- /* If stack grows down, we must leave a hole at the top. */
- {
- int len = 0;
+ if (nargs < TYPE_NFIELDS (ftype))
+ error ("too few arguments in function call");
- /* Reserve space for the return structure to be written on the
- stack, if necessary */
+ for (i = nargs - 1; i >= 0; i--)
+ {
+ struct type *param_type;
+ if (TYPE_NFIELDS (ftype) > i)
+ param_type = TYPE_FIELD_TYPE (ftype, i);
+ else
+ param_type = 0;
+ args[i] = value_arg_coerce (args[i], param_type);
+ }
- if (struct_return)
- len += TYPE_LENGTH (value_type);
-
+#if defined (REG_STRUCT_HAS_ADDR)
+ {
+ /* This is a machine like the sparc, where we may need to pass a pointer
+ to the structure, not the structure itself. */
for (i = nargs - 1; i >= 0; i--)
- len += TYPE_LENGTH (VALUE_TYPE (value_arg_coerce (args[i])));
-#ifdef CALL_DUMMY_STACK_ADJUST
- len += CALL_DUMMY_STACK_ADJUST;
+ if ((TYPE_CODE (VALUE_TYPE (args[i])) == TYPE_CODE_STRUCT
+ || TYPE_CODE (VALUE_TYPE (args[i])) == TYPE_CODE_UNION
+ || TYPE_CODE (VALUE_TYPE (args[i])) == TYPE_CODE_ARRAY
+ || TYPE_CODE (VALUE_TYPE (args[i])) == TYPE_CODE_STRING)
+ && REG_STRUCT_HAS_ADDR (using_gcc, VALUE_TYPE (args[i])))
+ {
+ CORE_ADDR addr;
+ int len = TYPE_LENGTH (VALUE_TYPE (args[i]));
+#ifdef STACK_ALIGN
+ int aligned_len = STACK_ALIGN (len);
+#else
+ int aligned_len = len;
#endif
+#if !(1 INNER_THAN 2)
+ /* The stack grows up, so the address of the thing we push
+ is the stack pointer before we push it. */
+ addr = sp;
+#else
+ sp -= aligned_len;
+#endif
+ /* Push the structure. */
+ write_memory (sp, VALUE_CONTENTS (args[i]), len);
#if 1 INNER_THAN 2
- sp -= STACK_ALIGN (len) - len;
+ /* The stack grows down, so the address of the thing we push
+ is the stack pointer after we push it. */
+ addr = sp;
#else
- sp += STACK_ALIGN (len) - len;
+ sp += aligned_len;
#endif
+ /* The value we're going to pass is the address of the thing
+ we just pushed. */
+ args[i] = value_from_longest (lookup_pointer_type (value_type),
+ (LONGEST) addr);
+ }
}
-#endif /* STACK_ALIGN */
+#endif /* REG_STRUCT_HAS_ADDR. */
- /* Reserve space for the return structure to be written on the
- stack, if necessary */
+ /* Reserve space for the return structure to be written on the
+ stack, if necessary */
- if (struct_return)
- {
+ if (struct_return)
+ {
+ int len = TYPE_LENGTH (value_type);
+#ifdef STACK_ALIGN
+ len = STACK_ALIGN (len);
+#endif
#if 1 INNER_THAN 2
- sp -= TYPE_LENGTH (value_type);
- struct_addr = sp;
+ sp -= len;
+ struct_addr = sp;
#else
- struct_addr = sp;
- sp += TYPE_LENGTH (value_type);
+ struct_addr = sp;
+ sp += len;
#endif
- }
+ }
-#if defined (REG_STRUCT_HAS_ADDR)
+#ifdef STACK_ALIGN
+ /* If stack grows down, we must leave a hole at the top. */
{
- /* This is a machine like the sparc, where we need to pass a pointer
- to the structure, not the structure itself. */
- if (REG_STRUCT_HAS_ADDR (using_gcc))
- for (i = nargs - 1; i >= 0; i--)
- if (TYPE_CODE (VALUE_TYPE (args[i])) == TYPE_CODE_STRUCT)
- {
- CORE_ADDR addr;
-#if !(1 INNER_THAN 2)
- /* The stack grows up, so the address of the thing we push
- is the stack pointer before we push it. */
- addr = sp;
+ int len = 0;
+
+ for (i = nargs - 1; i >= 0; i--)
+ len += TYPE_LENGTH (VALUE_TYPE (args[i]));
+#ifdef CALL_DUMMY_STACK_ADJUST
+ len += CALL_DUMMY_STACK_ADJUST;
#endif
- /* Push the structure. */
- sp = value_push (sp, args[i]);
#if 1 INNER_THAN 2
- /* The stack grows down, so the address of the thing we push
- is the stack pointer after we push it. */
- addr = sp;
+ sp -= STACK_ALIGN (len) - len;
+#else
+ sp += STACK_ALIGN (len) - len;
#endif
- /* The value we're going to pass is the address of the thing
- we just pushed. */
- args[i] = value_from_longest (lookup_pointer_type (value_type),
- (LONGEST) addr);
- }
}
-#endif /* REG_STRUCT_HAS_ADDR. */
+#endif /* STACK_ALIGN */
#ifdef PUSH_ARGUMENTS
PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr);
#else /* !PUSH_ARGUMENTS */
for (i = nargs - 1; i >= 0; i--)
- sp = value_arg_push (sp, args[i]);
+ sp = value_push (sp, args[i]);
#endif /* !PUSH_ARGUMENTS */
#ifdef CALL_DUMMY_STACK_ADJUST
char format[80];
sprintf (format, "at %s", local_hex_format ());
name = alloca (80);
+ /* FIXME-32x64: assumes funaddr fits in a long. */
sprintf (name, format, (unsigned long) funaddr);
}
}
}
#else /* no CALL_DUMMY. */
-value
+value_ptr
call_function_by_hand (function, nargs, args)
- value function;
+ value_ptr function;
int nargs;
- value *args;
+ value_ptr *args;
{
error ("Cannot invoke functions on this machine.");
}
first element, and all elements must have the same size (though we
don't currently enforce any restriction on their types). */
-value
+value_ptr
value_array (lowbound, highbound, elemvec)
int lowbound;
int highbound;
- value *elemvec;
+ value_ptr *elemvec;
{
int nelem;
int idx;
int typelength;
- value val;
+ value_ptr val;
struct type *rangetype;
struct type *arraytype;
CORE_ADDR addr;
zero and an upper bound of LEN - 1. Also note that the string may contain
embedded null bytes. */
-value
+value_ptr
value_string (ptr, len)
char *ptr;
int len;
{
- value val;
- struct type *rangetype;
- struct type *stringtype;
+ value_ptr val;
+ int lowbound = current_language->string_lower_bound;
+ struct type *rangetype = create_range_type ((struct type *) NULL,
+ builtin_type_int,
+ lowbound, len + lowbound - 1);
+ struct type *stringtype
+ = create_string_type ((struct type *) NULL, rangetype);
CORE_ADDR addr;
+ if (current_language->c_style_arrays == 0)
+ {
+ val = allocate_value (stringtype);
+ memcpy (VALUE_CONTENTS_RAW (val), ptr, len);
+ return val;
+ }
+
+
/* Allocate space to store the string in the inferior, and then
copy LEN bytes from PTR in gdb to that address in the inferior. */
addr = allocate_space_in_inferior (len);
write_memory (addr, ptr, len);
- /* Create the string type and set up a string value to be evaluated
- lazily. */
-
- rangetype = create_range_type ((struct type *) NULL, builtin_type_int,
- 0, len - 1);
- stringtype = create_string_type ((struct type *) NULL, rangetype);
val = value_at_lazy (stringtype, addr);
return (val);
}
+
+value_ptr
+value_bitstring (ptr, len)
+ char *ptr;
+ int len;
+{
+ value_ptr val;
+ struct type *domain_type = create_range_type (NULL, builtin_type_int,
+ 0, len - 1);
+ struct type *type = create_set_type ((struct type*) NULL, domain_type);
+ TYPE_CODE (type) = TYPE_CODE_BITSTRING;
+ val = allocate_value (type);
+ memcpy (VALUE_CONTENTS_RAW (val), ptr, TYPE_LENGTH (type) / TARGET_CHAR_BIT);
+ return val;
+}
\f
/* See if we can pass arguments in T2 to a function which takes arguments
of types T1. Both t1 and t2 are NULL-terminated vectors. If some
typecmp (staticp, t1, t2)
int staticp;
struct type *t1[];
- value t2[];
+ value_ptr t2[];
{
int i;
If LOOKING_FOR_BASECLASS, then instead of looking for struct fields,
look for a baseclass named NAME. */
-static value
+static value_ptr
search_struct_field (name, arg1, offset, type, looking_for_baseclass)
char *name;
- register value arg1;
+ register value_ptr arg1;
int offset;
register struct type *type;
int looking_for_baseclass;
if (t_field_name && STREQ (t_field_name, name))
{
- value v;
+ value_ptr v;
if (TYPE_FIELD_STATIC (type, i))
{
char *phys_name = TYPE_FIELD_STATIC_PHYSNAME (type, i);
error("there is no field named %s", name);
return v;
}
+ if (t_field_name && t_field_name[0] == '\0'
+ && TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_UNION)
+ {
+ /* Look for a match through the fields of an anonymous union. */
+ value_ptr v;
+ v = search_struct_field (name, arg1, offset,
+ TYPE_FIELD_TYPE (type, i),
+ looking_for_baseclass);
+ if (v)
+ return v;
+ }
}
for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
{
- value v;
+ value_ptr v;
/* If we are looking for baseclasses, this is what we get when we
hit them. But it could happen that the base part's member name
is not yet filled in. */
if (BASETYPE_VIA_VIRTUAL (type, i))
{
- value v2;
+ value_ptr v2;
/* Fix to use baseclass_offset instead. FIXME */
baseclass_addr (type, i, VALUE_CONTENTS (arg1) + offset,
&v2, (int *)NULL);
If found, return value, else if name matched and args not return (value)-1,
else return NULL. */
-static value
+static value_ptr
search_struct_method (name, arg1p, args, offset, static_memfuncp, type)
char *name;
- register value *arg1p, *args;
+ register value_ptr *arg1p, *args;
int offset, *static_memfuncp;
register struct type *type;
{
int i;
- value v;
- static int name_matched = 0;
+ value_ptr v;
+ int name_matched = 0;
char dem_opname[64];
check_stub_type (type);
TYPE_FN_FIELD_ARGS (f, j), args))
{
if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
- return (value)value_virtual_fn_field (arg1p, f, j, type, offset);
+ return value_virtual_fn_field (arg1p, f, j, type, offset);
if (TYPE_FN_FIELD_STATIC_P (f, j) && static_memfuncp)
*static_memfuncp = 1;
- v = (value)value_fn_field (arg1p, f, j, type, offset);
- if (v != (value)NULL) return v;
+ v = value_fn_field (arg1p, f, j, type, offset);
+ if (v != NULL) return v;
}
j--;
}
}
v = search_struct_method (name, arg1p, args, base_offset + offset,
static_memfuncp, TYPE_BASECLASS (type, i));
- if (v == (value) -1)
+ if (v == (value_ptr) -1)
{
name_matched = 1;
}
return v;
}
}
- if (name_matched) return (value) -1;
+ if (name_matched) return (value_ptr) -1;
else return NULL;
}
ERR is an error message to be printed in case the field is not found. */
-value
+value_ptr
value_struct_elt (argp, args, name, static_memfuncp, err)
- register value *argp, *args;
+ register value_ptr *argp, *args;
char *name;
int *static_memfuncp;
char *err;
{
register struct type *t;
- value v;
+ value_ptr v;
COERCE_ARRAY (*argp);
v = search_struct_method (name, argp, args, 0, static_memfuncp, t);
- if (v == 0)
+ if (v == (value_ptr) -1)
+ error ("Cannot take address of a method");
+ else if (v == 0)
{
if (TYPE_NFN_FIELDS (t))
error ("There is no member or method named %s.", name);
if (!args[1])
{
/* destructors are a special case. */
- v = (value)value_fn_field (NULL, TYPE_FN_FIELDLIST1 (t, 0),
- TYPE_FN_FIELDLIST_LENGTH (t, 0), 0, 0);
+ v = value_fn_field (NULL, TYPE_FN_FIELDLIST1 (t, 0),
+ TYPE_FN_FIELDLIST_LENGTH (t, 0), 0, 0);
if (!v) error("could not find destructor function named %s.", name);
else return v;
}
else
v = search_struct_method (name, argp, args, 0, static_memfuncp, t);
- if (v == (value) -1)
+ if (v == (value_ptr) -1)
{
error("Argument list of %s mismatch with component in the structure.", name);
}
if (name[0] == '~')
{
char *dname = type_name_no_tag (type);
- if (!STREQ (dname, name+1))
+ char *cp = strchr (dname, '<');
+ int len;
+
+ /* Do not compare the template part for template classes. */
+ if (cp == NULL)
+ len = strlen (dname);
+ else
+ len = cp - dname;
+ if (strlen (name + 1) != len || !STREQN (dname, name + 1, len))
error ("name of destructor must equal name of class");
else
return 1;
int
check_field (arg1, name)
- register value arg1;
+ register value_ptr arg1;
const char *name;
{
register struct type *t;
"pointers to member functions". This function is used
to resolve user expressions of the form "DOMAIN::NAME". */
-value
+value_ptr
value_struct_elt_for_reference (domain, offset, curtype, name, intype)
struct type *domain, *curtype, *intype;
int offset;
{
register struct type *t = curtype;
register int i;
- value v;
+ value_ptr v;
if ( TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION)
(lookup_reference_type
(lookup_member_type (TYPE_FN_FIELD_TYPE (f, j),
domain)),
- (LONGEST) METHOD_PTR_FROM_VOFFSET
- (TYPE_FN_FIELD_VOFFSET (f, j)));
+ (LONGEST) METHOD_PTR_FROM_VOFFSET (TYPE_FN_FIELD_VOFFSET (f, j)));
}
else
{
}
for (i = TYPE_N_BASECLASSES (t) - 1; i >= 0; i--)
{
- value v;
+ value_ptr v;
int base_offset;
if (BASETYPE_VIA_VIRTUAL (t, i))
/* C++: return the value of the class instance variable, if one exists.
Flag COMPLAIN signals an error if the request is made in an
inappropriate context. */
-value
+
+value_ptr
value_of_this (complain)
int complain;
{
- extern FRAME selected_frame;
struct symbol *func, *sym;
struct block *b;
int i;
static const char funny_this[] = "this";
- value this;
+ value_ptr this;
if (selected_frame == 0)
if (complain)
error ("`this' argument at unknown address");
return this;
}
+
+/* Create a slice (sub-string, sub-array) of ARRAY, that is LENGTH elements
+ long, starting at LOWBOUND. The result has the same lower bound as
+ the original ARRAY. */
+
+value_ptr
+value_slice (array, lowbound, length)
+ value_ptr array;
+ int lowbound, length;
+{
+ COERCE_VARYING_ARRAY (array);
+ if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_BITSTRING)
+ error ("not implemented - bitstring slice");
+ if (TYPE_CODE (VALUE_TYPE (array)) != TYPE_CODE_ARRAY
+ && TYPE_CODE (VALUE_TYPE (array)) != TYPE_CODE_STRING)
+ error ("cannot take slice of non-array");
+ else
+ {
+ struct type *slice_range_type, *slice_type;
+ value_ptr slice;
+ struct type *range_type = TYPE_FIELD_TYPE (VALUE_TYPE (array), 0);
+ struct type *element_type = TYPE_TARGET_TYPE (VALUE_TYPE (array));
+ int lowerbound = TYPE_LOW_BOUND (range_type);
+ int upperbound = TYPE_HIGH_BOUND (range_type);
+ int offset = (lowbound - lowerbound) * TYPE_LENGTH (element_type);
+ if (lowbound < lowerbound || length < 0
+ || lowbound + length - 1 > upperbound)
+ error ("slice out of range");
+ /* FIXME-type-allocation: need a way to free this type when we are
+ done with it. */
+ slice_range_type = create_range_type ((struct type*) NULL,
+ TYPE_TARGET_TYPE (range_type),
+ lowerbound,
+ lowerbound + length - 1);
+ slice_type = create_array_type ((struct type*) NULL, element_type,
+ slice_range_type);
+ TYPE_CODE (slice_type) = TYPE_CODE (VALUE_TYPE (array));
+ slice = allocate_value (slice_type);
+ if (VALUE_LAZY (array))
+ VALUE_LAZY (slice) = 1;
+ else
+ memcpy (VALUE_CONTENTS (slice), VALUE_CONTENTS (array) + offset,
+ TYPE_LENGTH (slice_type));
+ if (VALUE_LVAL (array) == lval_internalvar)
+ VALUE_LVAL (slice) = lval_internalvar_component;
+ else
+ VALUE_LVAL (slice) = VALUE_LVAL (array);
+ VALUE_ADDRESS (slice) = VALUE_ADDRESS (array);
+ VALUE_OFFSET (slice) = VALUE_OFFSET (array) + offset;
+ return slice;
+ }
+}
+
+/* Assuming chill_varying_type (VARRAY) is true, return an equivalent
+ value as a fixed-length array. */
+
+value_ptr
+varying_to_slice (varray)
+ value_ptr varray;
+{
+ struct type *vtype = VALUE_TYPE (varray);
+ LONGEST length = unpack_long (TYPE_FIELD_TYPE (vtype, 0),
+ VALUE_CONTENTS (varray)
+ + TYPE_FIELD_BITPOS (vtype, 0) / 8);
+ return value_slice (value_primitive_field (varray, 0, 1, vtype), 0, length);
+}
+
+/* Create a value for a FORTRAN complex number. Currently most of
+ the time values are coerced to COMPLEX*16 (i.e. a complex number
+ composed of 2 doubles. This really should be a smarter routine
+ that figures out precision inteligently as opposed to assuming
+ doubles. FIXME: fmb */
+
+value_ptr
+value_literal_complex (arg1, arg2, type)
+ value_ptr arg1;
+ value_ptr arg2;
+ struct type *type;
+{
+ register value_ptr val;
+ struct type *real_type = TYPE_TARGET_TYPE (type);
+
+ val = allocate_value (type);
+ arg1 = value_cast (real_type, arg1);
+ arg2 = value_cast (real_type, arg2);
+
+ memcpy (VALUE_CONTENTS_RAW (val),
+ VALUE_CONTENTS (arg1), TYPE_LENGTH (real_type));
+ memcpy (VALUE_CONTENTS_RAW (val) + TYPE_LENGTH (real_type),
+ VALUE_CONTENTS (arg2), TYPE_LENGTH (real_type));
+ return val;
+}
+
+/* Cast a value into the appropriate complex data type. */
+
+static value_ptr
+cast_into_complex (type, val)
+ struct type *type;
+ register value_ptr val;
+{
+ struct type *real_type = TYPE_TARGET_TYPE (type);
+ if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_COMPLEX)
+ {
+ struct type *val_real_type = TYPE_TARGET_TYPE (VALUE_TYPE (val));
+ value_ptr re_val = allocate_value (val_real_type);
+ value_ptr im_val = allocate_value (val_real_type);
+
+ memcpy (VALUE_CONTENTS_RAW (re_val),
+ VALUE_CONTENTS (val), TYPE_LENGTH (val_real_type));
+ memcpy (VALUE_CONTENTS_RAW (im_val),
+ VALUE_CONTENTS (val) + TYPE_LENGTH (val_real_type),
+ TYPE_LENGTH (val_real_type));
+
+ return value_literal_complex (re_val, im_val, type);
+ }
+ else if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FLT
+ || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT)
+ return value_literal_complex (val, value_zero (real_type, not_lval), type);
+ else
+ error ("cannot cast non-number to complex");
+}
projects / deliverable / binutils-gdb.git / blobdiff