2 * Copyright (C) 1995-2010 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief support functions for calling conventions
23 * @author Matthias Braun
26 #ifndef FIRM_BE_SPARC_SPARC_CCONV_H
27 #define FIRM_BE_SPARC_SPARC_CCONV_H
29 #include "firm_types.h"
30 #include "../be_types.h"
31 #include "gen_sparc_regalloc_if.h"
33 /** information about a single parameter or result */
34 typedef struct reg_or_stackslot_t
36 const arch_register_t *reg0; /**< if != NULL, the first register used for
38 const arch_register_t *reg1; /**< if != NULL, the second register used. */
39 ir_type *type; /**< indicates that an entity of the specific
41 unsigned offset; /**< if transmitted via stack, the offset for
43 ir_entity *entity; /**< entity in frame type */
46 /** The calling convention info for one call site. */
47 typedef struct calling_convention_t
49 bool omit_fp; /**< do not use frame pointer (and no
51 reg_or_stackslot_t *parameters; /**< parameter info. */
52 unsigned param_stack_size; /**< stack size for parameters */
53 unsigned n_param_regs; /**< number of values passed in a
55 reg_or_stackslot_t *results; /**< result info. */
56 } calling_convention_t;
59 * Determine how function parameters and return values are passed.
60 * Decides what goes to register or to stack and what stack offsets/
63 * @param function_type the type of the caller/callee function
64 * @param caller true for convention for the caller, false for callee
66 calling_convention_t *sparc_decide_calling_convention(ir_type *function_type,
70 * free memory used by a calling_convention_t
72 void sparc_free_calling_convention(calling_convention_t *cconv);