diff options
Diffstat (limited to 'gcc/testsuite/objc-obj-c++-shared/next-mapping.h')
-rw-r--r-- | gcc/testsuite/objc-obj-c++-shared/next-mapping.h | 839 |
1 files changed, 5 insertions, 834 deletions
diff --git a/gcc/testsuite/objc-obj-c++-shared/next-mapping.h b/gcc/testsuite/objc-obj-c++-shared/next-mapping.h index e5e2d22..3b141c6 100644 --- a/gcc/testsuite/objc-obj-c++-shared/next-mapping.h +++ b/gcc/testsuite/objc-obj-c++-shared/next-mapping.h @@ -1,3 +1,6 @@ +#ifndef _OBJC_NEXT_MAPPING_H_ +#define _OBJC_NEXT_MAPPING_H_ + /* This file "renames" various ObjC GNU runtime entry points (and fakes the existence of several others) if the NeXT runtime is being used. */ @@ -81,839 +84,6 @@ #define NULL 0 #endif -/* The following is necessary to "cover" the bf*.m test cases on NeXT. */ - -#undef MAX -#undef MIN -#undef ROUND - -#ifdef __cplusplus -# define MAX(X, Y) ((X > Y) ? X : Y) -# define MIN(X, Y) ((X < Y) ? X : Y) -# define ROUND(V, A) (A * ((V + A - 1) / A)) -#else -# define MAX(X, Y) \ - ({ typeof (X) __x = (X), __y = (Y); \ - (__x > __y ? __x : __y); }) -# define MIN(X, Y) \ - ({ typeof (X) __x = (X), __y = (Y); \ - (__x < __y ? __x : __y); }) -# define ROUND(V, A) \ - ({ typeof (V) __v = (V); typeof (A) __a = (A); \ - __a * ((__v+__a - 1)/__a); }) -#endif - -#define BITS_PER_UNIT __CHAR_BIT__ -typedef struct{ char a; } __small_struct; -#define STRUCTURE_SIZE_BOUNDARY (BITS_PER_UNIT * sizeof (__small_struct)) - -/* Not sure why the following are missing from NeXT objc headers... */ - -#ifndef _C_LNG_LNG -#define _C_LNG_LNG 'q' -#endif -#ifndef _C_ULNG_LNG -#define _C_ULNG_LNG 'Q' -#endif -#ifndef _C_ATOM -#define _C_ATOM '%' -#endif -#ifndef _C_BOOL -#define _C_BOOL 'B' -#endif - -#define _C_CONST 'r' -#define _C_IN 'n' -#define _C_INOUT 'N' -#define _C_OUT 'o' -#define _C_BYCOPY 'O' -#define _C_BYREF 'R' -#define _C_ONEWAY 'V' -#define _C_GCINVISIBLE '!' - -#define _F_CONST 0x01 -#define _F_IN 0x01 -#define _F_OUT 0x02 -#define _F_INOUT 0x03 -#define _F_BYCOPY 0x04 -#define _F_BYREF 0x08 -#define _F_ONEWAY 0x10 -#define _F_GCINVISIBLE 0x20 - -struct objc_struct_layout -{ - const char *original_type; - const char *type; - const char *prev_type; - unsigned int record_size; - unsigned int record_align; -}; - -typedef union arglist { - char *arg_ptr; - char arg_regs[sizeof (char*)]; -} *arglist_t; /* argument frame */ - -const char *objc_skip_typespec (const char *type); -void objc_layout_structure_get_info (struct objc_struct_layout *layout, - unsigned int *offset, unsigned int *align, const char **type); -void objc_layout_structure (const char *type, - struct objc_struct_layout *layout); -BOOL objc_layout_structure_next_member (struct objc_struct_layout *layout); -void objc_layout_finish_structure (struct objc_struct_layout *layout, - unsigned int *size, unsigned int *align); -int objc_aligned_size (const char *type); - -/* - return the size of an object specified by type -*/ - -int -objc_sizeof_type (const char *type) -{ - /* Skip the variable name if any */ - if (*type == '"') - { - for (type++; *type++ != '"';) - /* do nothing */; - } - - 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_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: - { - /* The NeXT encoding of bitfields is _still_: b 'size' */ - int size = atoi (type + 1); - /* Return an upper bound on byte size */ - return (size + BITS_PER_UNIT - 1) / BITS_PER_UNIT; - } - - case _C_STRUCT_B: - { - struct objc_struct_layout layout; - unsigned int size; - - objc_layout_structure (type, &layout); - while (objc_layout_structure_next_member (&layout)) - /* do nothing */ ; - objc_layout_finish_structure (&layout, &size, NULL); - - return size; - } - - case _C_UNION_B: - { - int max_size = 0; - while (*type != _C_UNION_E && *type++ != '=') - /* do nothing */; - while (*type != _C_UNION_E) - { - /* Skip the variable name if any */ - if (*type == '"') - { - for (type++; *type++ != '"';) - /* do nothing */; - } - max_size = MAX (max_size, objc_sizeof_type (type)); - type = objc_skip_typespec (type); - } - return max_size; - } - } - return 0; /* error */ -} - - -/* - Return the alignment of an object specified by type -*/ - -int -objc_alignof_type (const char *type) -{ - /* Skip the variable name if any */ - if (*type == '"') - { - for (type++; *type++ != '"';) - /* do nothing */; - } - 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: - case _C_BFLD: /* This is for the NeXT only */ - 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)) - /* do nothing */; - 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)) - /* do nothing */; - objc_layout_finish_structure (&layout, NULL, &align); - - return align; - } - - case _C_UNION_B: - { - int maxalign = 0; - while (*type != _C_UNION_E && *type++ != '=') - /* do nothing */; - while (*type != _C_UNION_E) - { - /* Skip the variable name if any */ - if (*type == '"') - { - for (type++; *type++ != '"';) - /* do nothing */; - } - maxalign = MAX (maxalign, objc_alignof_type (type)); - type = objc_skip_typespec (type); - } - return maxalign; - } - } - return 0; /* error */ -} - -/* - The aligned size if the size rounded up to the nearest alignment. -*/ - -int -objc_aligned_size (const char *type) -{ - int size, align; - - /* Skip the variable name */ - if (*type == '"') - { - for (type++; *type++ != '"';) - /* do nothing */; - } - - size = objc_sizeof_type (type); - align = objc_alignof_type (type); - - return ROUND (size, align); -} - -/* - The size rounded up to the nearest integral of the wordsize, taken - to be the size of a void *. -*/ - -int -objc_promoted_size (const char *type) -{ - int size, wordsize; - - /* Skip the variable name */ - if (*type == '"') - { - for (type++; *type++ != '"';) - /* do nothing */; - } - - size = objc_sizeof_type (type); - wordsize = sizeof (void *); - - return ROUND (size, wordsize); -} - -/* - Skip type qualifiers. These may eventually precede typespecs - occurring in method prototype encodings. -*/ - -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; -} - - -/* - Skip one typespec element. If the typespec is prepended by type - qualifiers, these are skipped as well. -*/ - -const char * -objc_skip_typespec (const char *type) -{ - /* Skip the variable name if any */ - if (*type == '"') - { - for (type++; *type++ != '"';) - /* do nothing */; - } - - type = objc_skip_type_qualifiers (type); - - switch (*type) { - - case _C_ID: - /* An id may be annotated by the actual type if it is known - with the @"ClassName" syntax */ - - if (*++type != '"') - return type; - else - { - while (*++type != '"') - /* do nothing */; - return type + 1; - } - - /* The following are one character type codes */ - 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: - /* skip digits, typespec and closing ']' */ - - while (isdigit ((unsigned char)*++type)) - ; - type = objc_skip_typespec (type); - if (*type == _C_ARY_E) - return ++type; - else - break; /* error */ - - case _C_BFLD: - /* The NeXT encoding for bitfields is _still_: b 'size' */ - while (isdigit ((unsigned char)*++type)) - ; /* skip type and size */ - return type; - - case _C_STRUCT_B: - /* skip name, and elements until closing '}' */ - - while (*type != _C_STRUCT_E && *type++ != '=') - ; - while (*type != _C_STRUCT_E) - { - type = objc_skip_typespec (type); - } - return ++type; - - case _C_UNION_B: - /* skip name, and elements until closing ')' */ - - while (*type != _C_UNION_E && *type++ != '=') - ; - while (*type != _C_UNION_E) - { - type = objc_skip_typespec (type); - } - return ++type; - - case _C_PTR: - /* Just skip the following typespec */ - - return objc_skip_typespec (++type); - } - return 0; /* error */ -} - -/* - Skip an offset as part of a method encoding. This is prepended by a - '+' if the argument is passed in registers. -*/ -inline const char * -objc_skip_offset (const char *type) -{ - if (*type == '+') - type++; - while (isdigit ((unsigned char) *++type)) - ; - return type; -} - -/* - Skip an argument specification of a method encoding. -*/ -const char * -objc_skip_argspec (const char *type) -{ - type = objc_skip_typespec (type); - type = objc_skip_offset (type); - return type; -} - -#ifdef NEXT_OBJC_USE_NEW_INTERFACE -typedef void *PMETH; -#else -typedef struct objc_method *PMETH; -#endif - -/* - Return the number of arguments that the method MTH expects. - Note that all methods need two implicit arguments `self' and - `_cmd'. -*/ -int -method_get_number_of_arguments (PMETH mth) -{ - int i = 0; -#ifdef NEXT_OBJC_USE_NEW_INTERFACE - const char *type = method_getTypeEncoding((Method)mth); -#else - const char *type = mth->method_types; -#endif - while (*type) - { - type = objc_skip_argspec (type); - i += 1; - } - return i - 1; -} - -/* - Return the size of the argument block needed on the stack to invoke - the method MTH. This may be zero, if all arguments are passed in - registers. -*/ - -int -method_get_sizeof_arguments (PMETH mth) -{ -#ifdef NEXT_OBJC_USE_NEW_INTERFACE - const char *type = objc_skip_typespec (method_getTypeEncoding((Method)mth)); -#else - const char *type = objc_skip_typespec (mth->method_types); -#endif - return atoi (type); -} - -/* - Return a pointer to the next argument of ARGFRAME. type points to - the last argument. Typical use of this look like: - - { - char *datum, *type; - for (datum = method_get_first_argument (method, argframe, &type); - datum; datum = method_get_next_argument (argframe, &type)) - { - unsigned flags = objc_get_type_qualifiers (type); - type = objc_skip_type_qualifiers (type); - if (*type != _C_PTR) - [portal encodeData: datum ofType: type]; - else - { - if ((flags & _F_IN) == _F_IN) - [portal encodeData: *(char **) datum ofType: ++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); -} - -/* - Return a pointer to the value of the first argument of the method - described in M with the given argumentframe ARGFRAME. The type - is returned in TYPE. type must be passed to successive calls of - method_get_next_argument. -*/ -char * -method_get_first_argument (PMETH m, - arglist_t argframe, - const char **type) -{ -#ifdef NEXT_OBJC_USE_NEW_INTERFACE - *type = method_getTypeEncoding((Method)m); -#else - *type = m->method_types; -#endif - - return method_get_next_argument (argframe, type); -} - -/* - Return a pointer to the ARGth argument of the method - M from the frame ARGFRAME. The type of the argument - is returned in the value-result argument TYPE -*/ - -char * -method_get_nth_argument (PMETH m, - arglist_t argframe, int arg, - const char **type) -{ -#ifdef NEXT_OBJC_USE_NEW_INTERFACE - const char *t = objc_skip_argspec (method_getTypeEncoding((Method)m)); -#else - const char *t = objc_skip_argspec (m->method_types); -#endif - - 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; -} - - -/* The following three functions can be used to determine how a - structure is laid out by the compiler. For example: - - struct objc_struct_layout layout; - int i; - - objc_layout_structure (type, &layout); - while (objc_layout_structure_next_member (&layout)) - { - int position, align; - const char *type; - - objc_layout_structure_get_info (&layout, &position, &align, &type); - printf ("element %d has offset %d, alignment %d\n", - i++, position, align); - } - - These functions are used by objc_sizeof_type and objc_alignof_type - functions to compute the size and alignment of structures. The - previous method of computing the size and alignment of a structure - was not working on some architectures, particulary on AIX, and in - the presence of bitfields inside the structure. */ -void -objc_layout_structure (const char *type, - struct objc_struct_layout *layout) -{ - const char *ntype; - - layout->original_type = ++type; - - /* Skip "<name>=" if any. Avoid embedded structures and unions. */ - ntype = type; - while (*ntype != _C_STRUCT_E && *ntype != _C_STRUCT_B && *ntype != _C_UNION_B - && *ntype++ != '=') - /* do nothing */; - - /* If there's a "<name>=", ntype - 1 points to '='; skip the the name */ - if (*(ntype - 1) == '=') - type = ntype; - - layout->type = type; - layout->prev_type = NULL; - layout->record_size = 0; - layout->record_align = MAX (BITS_PER_UNIT, STRUCTURE_SIZE_BOUNDARY); -} - - -BOOL -objc_layout_structure_next_member (struct objc_struct_layout *layout) -{ - register int desired_align = 0; - - /* The current type without the type qualifiers */ - const char *type; - - /* Add the size of the previous field to the size of the record. */ - 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 - layout->record_size += atoi (++type); - } - - if (*layout->type == _C_STRUCT_E) - return NO; - - /* Skip the variable name if any */ - if (*layout->type == '"') - { - for (layout->type++; *layout->type++ != '"';) - /* do nothing */; - } - - type = objc_skip_type_qualifiers (layout->type); - - desired_align = objc_alignof_type (type) * BITS_PER_UNIT; - - /* Record must have at least as much alignment as any field. - Otherwise, the alignment of the field within the record - is meaningless. */ - layout->record_align = MAX (layout->record_align, desired_align); - - if (*type == _C_BFLD) - { - int bfld_size = atoi (++type); - int int_align = __alignof__ (int) * BITS_PER_UNIT; - /* If this bitfield would traverse a word alignment boundary, push it out - to that boundary instead. */ - if (layout->record_size % int_align - && (layout->record_size / int_align - < (layout->record_size + bfld_size - 1) / int_align)) - layout->record_size = ROUND (layout->record_size, int_align); - } - else if (layout->record_size % desired_align != 0) - { - /* We need to skip space before this field. - Bump the cumulative size to multiple of field alignment. */ - layout->record_size = ROUND (layout->record_size, desired_align); - } - - /* Jump to the next field in record. */ - - layout->prev_type = layout->type; - layout->type = objc_skip_typespec (layout->type); /* skip component */ - - 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) - { - /* Round the size up to be a multiple of the required alignment */ - layout->record_size = ROUND (layout->record_size, layout->record_align); - 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; -} /* A small, portable NSConstantString implementation for use with the NeXT runtime. @@ -983,4 +153,5 @@ void objc_constant_string_init (void) { sizeof (_NSConstantStringClassReference)); } -#endif /* #ifdef __NEXT_RUNTIME__ */ +#endif /*__NEXT_RUNTIME__ */ +#endif /* _OBJC_NEXT_MAPPING_H_ */
\ No newline at end of file |