quakeforge/tools/qfcc/include/struct.h
Bill Currie 6253d775e6 [qfcc] Adjust ivar offsets to preserve alignment
As a class's ivars are built up by inheritance, but with only that
class's ivars in the symbol table, is is necessary to include an offset
based on the super class's ivars in order to ensure alignments are
respected. This is achieved via the new `base` parameter to
build_struct(), which is used to offset the current size while
calculating the aligned offset of the symbols. The parameter is ignored
for unions, as they always start at 0. The ivars for the current class
still have a base offset of 0 until they are actually added to the
class.

Fixes #29
2022-07-31 17:15:47 +09:00

66 lines
1.9 KiB
C

/*
struct.h
structure support
Copyright (C) 2001 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2001/12/08
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifndef __struct_h
#define __struct_h
struct def_s;
enum storage_class_e;
struct symbol_s;
struct symtab_s;
struct type_s;
typedef struct {
const char *name;
struct type_s *type;
void (*emit) (struct def_s *def, void *data, int index);
} struct_def_t;
struct symbol_s *find_struct (int su, struct symbol_s *tag,
struct type_s *type);
struct symbol_s *build_struct (int su, struct symbol_s *tag,
struct symtab_s *symtab, struct type_s *type,
int base);
struct symbol_s *find_enum (struct symbol_s *tag);
struct symtab_s *start_enum (struct symbol_s *enm);
struct symbol_s *finish_enum (struct symbol_s *sym);
void add_enum (struct symbol_s *enm, struct symbol_s *name,
struct expr_s *val);
int enum_as_bool (struct type_s *enm, struct expr_s **zero,
struct expr_s **one);
struct symbol_s *make_structure (const char *name, int su, struct_def_t *defs,
struct type_s *type);
struct def_s * emit_structure (const char *name, int su, struct_def_t *defs,
struct type_s *type, void *data,
struct defspace_s *space,
enum storage_class_e storage);
#endif//__struct_h