#include "tconfig.h"
#include "coretypes.h"
#include "tm.h"
#include "objc-api.h"
#include "encoding.h"
#include <stdlib.h>
#undef MAX
#define MAX(X, Y) \
({ typeof (X) __x = (X), __y = (Y); \
(__x > __y ? __x : __y); })
#undef MIN
#define MIN(X, Y) \
({ typeof (X) __x = (X), __y = (Y); \
(__x < __y ? __x : __y); })
#undef ROUND
#define ROUND(V, A) \
({ typeof (V) __v = (V); typeof (A) __a = (A); \
__a * ((__v+__a - 1)/__a); })
#define TREE_CODE(TYPE) *(TYPE)
#define TREE_TYPE(TREE) (TREE)
#define RECORD_TYPE _C_STRUCT_B
#define UNION_TYPE _C_UNION_B
#define QUAL_UNION_TYPE _C_UNION_B
#define ARRAY_TYPE _C_ARY_B
#define REAL_TYPE _C_DBL
#define VECTOR_TYPE _C_VECTOR
#define TYPE_FIELDS(TYPE) objc_skip_typespec (TYPE)
#define DECL_MODE(TYPE) *(TYPE)
#define TYPE_MODE(TYPE) *(TYPE)
#define DFmode _C_DBL
#define get_inner_array_type(TYPE) ((TYPE) + 1)
#undef STRUCTURE_SIZE_BOUNDARY
#define STRUCTURE_SIZE_BOUNDARY (BITS_PER_UNIT * sizeof (struct{char a;}))
static int __attribute__ ((__unused__)) target_flags = 0;
#define rs6000_special_round_type_align(STRUCT, COMPUTED, SPECIFIED) \
((TYPE_FIELDS (STRUCT) != 0 \
&& DECL_MODE (TYPE_FIELDS (STRUCT)) == DFmode) \
? MAX (MAX (COMPUTED, SPECIFIED), 64) \
: MAX (COMPUTED, SPECIFIED))
int
objc_sizeof_type (const char *type)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
switch (*type) {
case _C_ID:
return sizeof (id);
break;
case _C_CLASS:
return sizeof (Class);
break;
case _C_SEL:
return sizeof (SEL);
break;
case _C_CHR:
return sizeof (char);
break;
case _C_UCHR:
return sizeof (unsigned char);
break;
case _C_SHT:
return sizeof (short);
break;
case _C_USHT:
return sizeof (unsigned short);
break;
case _C_INT:
return sizeof (int);
break;
case _C_UINT:
return sizeof (unsigned int);
break;
case _C_LNG:
return sizeof (long);
break;
case _C_ULNG:
return sizeof (unsigned long);
break;
case _C_LNG_LNG:
return sizeof (long long);
break;
case _C_ULNG_LNG:
return sizeof (unsigned long long);
break;
case _C_FLT:
return sizeof (float);
break;
case _C_DBL:
return sizeof (double);
break;
case _C_VOID:
return sizeof (void);
break;
case _C_PTR:
case _C_ATOM:
case _C_CHARPTR:
return sizeof (char *);
break;
case _C_ARY_B:
{
int len = atoi (type + 1);
while (isdigit ((unsigned char)*++type))
;
return len * objc_aligned_size (type);
}
break;
case _C_BFLD:
{
int position, size;
int startByte, endByte;
position = atoi (type + 1);
while (isdigit ((unsigned char)*++type))
;
size = atoi (type + 1);
startByte = position / BITS_PER_UNIT;
endByte = (position + size) / BITS_PER_UNIT;
return endByte - startByte;
}
case _C_STRUCT_B:
{
struct objc_struct_layout layout;
unsigned int size;
objc_layout_structure (type, &layout);
while (objc_layout_structure_next_member (&layout))
;
objc_layout_finish_structure (&layout, &size, NULL);
return size;
}
case _C_UNION_B:
{
int max_size = 0;
while (*type != _C_UNION_E && *type++ != '=')
;
while (*type != _C_UNION_E)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
max_size = MAX (max_size, objc_sizeof_type (type));
type = objc_skip_typespec (type);
}
return max_size;
}
default:
{
objc_error (nil, OBJC_ERR_BAD_TYPE, "unknown type %s\n", type);
return 0;
}
}
}
int
objc_alignof_type (const char *type)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
switch (*type) {
case _C_ID:
return __alignof__ (id);
break;
case _C_CLASS:
return __alignof__ (Class);
break;
case _C_SEL:
return __alignof__ (SEL);
break;
case _C_CHR:
return __alignof__ (char);
break;
case _C_UCHR:
return __alignof__ (unsigned char);
break;
case _C_SHT:
return __alignof__ (short);
break;
case _C_USHT:
return __alignof__ (unsigned short);
break;
case _C_INT:
return __alignof__ (int);
break;
case _C_UINT:
return __alignof__ (unsigned int);
break;
case _C_LNG:
return __alignof__ (long);
break;
case _C_ULNG:
return __alignof__ (unsigned long);
break;
case _C_LNG_LNG:
return __alignof__ (long long);
break;
case _C_ULNG_LNG:
return __alignof__ (unsigned long long);
break;
case _C_FLT:
return __alignof__ (float);
break;
case _C_DBL:
return __alignof__ (double);
break;
case _C_PTR:
case _C_ATOM:
case _C_CHARPTR:
return __alignof__ (char *);
break;
case _C_ARY_B:
while (isdigit ((unsigned char)*++type))
;
return objc_alignof_type (type);
case _C_STRUCT_B:
{
struct objc_struct_layout layout;
unsigned int align;
objc_layout_structure (type, &layout);
while (objc_layout_structure_next_member (&layout))
;
objc_layout_finish_structure (&layout, NULL, &align);
return align;
}
case _C_UNION_B:
{
int maxalign = 0;
while (*type != _C_UNION_E && *type++ != '=')
;
while (*type != _C_UNION_E)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
maxalign = MAX (maxalign, objc_alignof_type (type));
type = objc_skip_typespec (type);
}
return maxalign;
}
default:
{
objc_error (nil, OBJC_ERR_BAD_TYPE, "unknown type %s\n", type);
return 0;
}
}
}
int
objc_aligned_size (const char *type)
{
int size, align;
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
size = objc_sizeof_type (type);
align = objc_alignof_type (type);
return ROUND (size, align);
}
int
objc_promoted_size (const char *type)
{
int size, wordsize;
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
size = objc_sizeof_type (type);
wordsize = sizeof (void *);
return ROUND (size, wordsize);
}
inline const char *
objc_skip_type_qualifiers (const char *type)
{
while (*type == _C_CONST
|| *type == _C_IN
|| *type == _C_INOUT
|| *type == _C_OUT
|| *type == _C_BYCOPY
|| *type == _C_BYREF
|| *type == _C_ONEWAY
|| *type == _C_GCINVISIBLE)
{
type += 1;
}
return type;
}
const char *
objc_skip_typespec (const char *type)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
type = objc_skip_type_qualifiers (type);
switch (*type) {
case _C_ID:
if (*++type != '"')
return type;
else
{
while (*++type != '"')
;
return type + 1;
}
case _C_CLASS:
case _C_SEL:
case _C_CHR:
case _C_UCHR:
case _C_CHARPTR:
case _C_ATOM:
case _C_SHT:
case _C_USHT:
case _C_INT:
case _C_UINT:
case _C_LNG:
case _C_ULNG:
case _C_LNG_LNG:
case _C_ULNG_LNG:
case _C_FLT:
case _C_DBL:
case _C_VOID:
case _C_UNDEF:
return ++type;
break;
case _C_ARY_B:
while (isdigit ((unsigned char)*++type))
;
type = objc_skip_typespec (type);
if (*type == _C_ARY_E)
return ++type;
else
{
objc_error (nil, OBJC_ERR_BAD_TYPE, "bad array type %s\n", type);
return 0;
}
case _C_BFLD:
while (isdigit ((unsigned char)*++type))
;
while (isdigit ((unsigned char)*++type))
;
return type;
case _C_STRUCT_B:
while (*type != _C_STRUCT_E && *type++ != '=')
;
while (*type != _C_STRUCT_E)
{
type = objc_skip_typespec (type);
}
return ++type;
case _C_UNION_B:
while (*type != _C_UNION_E && *type++ != '=')
;
while (*type != _C_UNION_E)
{
type = objc_skip_typespec (type);
}
return ++type;
case _C_PTR:
return objc_skip_typespec (++type);
default:
{
objc_error (nil, OBJC_ERR_BAD_TYPE, "unknown type %s\n", type);
return 0;
}
}
}
inline const char *
objc_skip_offset (const char *type)
{
if (*type == '+')
type++;
while (isdigit ((unsigned char) *++type))
;
return type;
}
const char *
objc_skip_argspec (const char *type)
{
type = objc_skip_typespec (type);
type = objc_skip_offset (type);
return type;
}
int
method_get_number_of_arguments (struct objc_method *mth)
{
int i = 0;
const char *type = mth->method_types;
while (*type)
{
type = objc_skip_argspec (type);
i += 1;
}
return i - 1;
}
int
method_get_sizeof_arguments (struct objc_method *mth)
{
const char *type = objc_skip_typespec (mth->method_types);
return atoi (type);
}
char *
method_get_next_argument (arglist_t argframe, const char **type)
{
const char *t = objc_skip_argspec (*type);
if (*t == '\0')
return 0;
*type = t;
t = objc_skip_typespec (t);
if (*t == '+')
return argframe->arg_regs + atoi (++t);
else
return argframe->arg_ptr + atoi (t);
}
char *
method_get_first_argument (struct objc_method *m,
arglist_t argframe,
const char **type)
{
*type = m->method_types;
return method_get_next_argument (argframe, type);
}
char *
method_get_nth_argument (struct objc_method *m,
arglist_t argframe, int arg,
const char **type)
{
const char *t = objc_skip_argspec (m->method_types);
if (arg > method_get_number_of_arguments (m))
return 0;
while (arg--)
t = objc_skip_argspec (t);
*type = t;
t = objc_skip_typespec (t);
if (*t == '+')
return argframe->arg_regs + atoi (++t);
else
return argframe->arg_ptr + atoi (t);
}
unsigned
objc_get_type_qualifiers (const char *type)
{
unsigned res = 0;
BOOL flag = YES;
while (flag)
switch (*type++)
{
case _C_CONST: res |= _F_CONST; break;
case _C_IN: res |= _F_IN; break;
case _C_INOUT: res |= _F_INOUT; break;
case _C_OUT: res |= _F_OUT; break;
case _C_BYCOPY: res |= _F_BYCOPY; break;
case _C_BYREF: res |= _F_BYREF; break;
case _C_ONEWAY: res |= _F_ONEWAY; break;
case _C_GCINVISIBLE: res |= _F_GCINVISIBLE; break;
default: flag = NO;
}
return res;
}
void
objc_layout_structure (const char *type,
struct objc_struct_layout *layout)
{
const char *ntype;
if (*type++ != _C_STRUCT_B)
{
objc_error (nil, OBJC_ERR_BAD_TYPE,
"record type expected in objc_layout_structure, got %s\n",
type);
}
layout->original_type = type;
ntype = type;
while (*ntype != _C_STRUCT_E && *ntype != _C_STRUCT_B && *ntype != _C_UNION_B
&& *ntype++ != '=')
;
if (*(ntype - 1) == '=')
type = ntype;
layout->type = type;
layout->prev_type = NULL;
layout->record_size = 0;
layout->record_align = BITS_PER_UNIT;
layout->record_align = MAX (layout->record_align, STRUCTURE_SIZE_BOUNDARY);
}
BOOL
objc_layout_structure_next_member (struct objc_struct_layout *layout)
{
register int desired_align = 0;
register const char *bfld_type = 0;
register int bfld_type_size, bfld_type_align = 0, bfld_field_size = 0;
const char *type;
if (layout->prev_type)
{
type = objc_skip_type_qualifiers (layout->prev_type);
if (*type != _C_BFLD)
layout->record_size += objc_sizeof_type (type) * BITS_PER_UNIT;
else {
for (bfld_type = type + 1;
isdigit ((unsigned char)*bfld_type);
bfld_type++)
;
bfld_type_size = objc_sizeof_type (bfld_type) * BITS_PER_UNIT;
bfld_type_align = objc_alignof_type (bfld_type) * BITS_PER_UNIT;
bfld_field_size = atoi (objc_skip_typespec (bfld_type));
layout->record_size += bfld_field_size;
}
}
if (*layout->type == _C_STRUCT_E)
return NO;
if (*layout->type == '"')
{
for (layout->type++; *layout->type++ != '"';)
;
}
type = objc_skip_type_qualifiers (layout->type);
if (*type != _C_BFLD)
desired_align = objc_alignof_type (type) * BITS_PER_UNIT;
else
{
desired_align = 1;
for (bfld_type = type + 1;
isdigit ((unsigned char) *bfld_type);
bfld_type++)
;
bfld_type_size = objc_sizeof_type (bfld_type) * BITS_PER_UNIT;
bfld_type_align = objc_alignof_type (bfld_type) * BITS_PER_UNIT;
bfld_field_size = atoi (objc_skip_typespec (bfld_type));
}
#ifdef BIGGEST_FIELD_ALIGNMENT
desired_align = MIN (desired_align, BIGGEST_FIELD_ALIGNMENT);
#endif
#ifdef ADJUST_FIELD_ALIGN
desired_align = ADJUST_FIELD_ALIGN (type, desired_align);
#endif
#ifndef PCC_BITFIELD_TYPE_MATTERS
layout->record_align = MAX (layout->record_align, desired_align);
#else
if (*type == _C_BFLD)
{
if (bfld_field_size)
layout->record_align = MAX (layout->record_align, desired_align);
else
desired_align = objc_alignof_type (bfld_type) * BITS_PER_UNIT;
{
int type_align = bfld_type_align;
#if 0
if (maximum_field_alignment != 0)
type_align = MIN (type_align, maximum_field_alignment);
else if (DECL_PACKED (field))
type_align = MIN (type_align, BITS_PER_UNIT);
#endif
layout->record_align = MAX (layout->record_align, type_align);
}
}
else
layout->record_align = MAX (layout->record_align, desired_align);
#endif
if (*type == _C_BFLD)
layout->record_size = atoi (type + 1);
else if (layout->record_size % desired_align != 0)
{
layout->record_size = ROUND (layout->record_size, desired_align);
}
layout->prev_type = layout->type;
layout->type = objc_skip_typespec (layout->type);
return YES;
}
void objc_layout_finish_structure (struct objc_struct_layout *layout,
unsigned int *size,
unsigned int *align)
{
if (layout->type && *layout->type == _C_STRUCT_E)
{
#if defined (ROUND_TYPE_ALIGN) && ! defined (__sparc__)
layout->record_align = ROUND_TYPE_ALIGN (layout->original_type,
1,
layout->record_align);
#else
layout->record_align = MAX (1, layout->record_align);
#endif
#ifdef ROUND_TYPE_SIZE
layout->record_size = ROUND_TYPE_SIZE (layout->original_type,
layout->record_size,
layout->record_align);
#else
layout->record_size = ROUND (layout->record_size, layout->record_align);
#endif
layout->type = NULL;
}
if (size)
*size = layout->record_size / BITS_PER_UNIT;
if (align)
*align = layout->record_align / BITS_PER_UNIT;
}
void objc_layout_structure_get_info (struct objc_struct_layout *layout,
unsigned int *offset,
unsigned int *align,
const char **type)
{
if (offset)
*offset = layout->record_size / BITS_PER_UNIT;
if (align)
*align = layout->record_align / BITS_PER_UNIT;
if (type)
*type = layout->prev_type;
}