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 "bearch_sparc_t.h"
33 #include "gen_sparc_regalloc_if.h"
35 /** information about a single parameter or result */
36 typedef struct reg_or_stackslot_t
38 const arch_register_req_t *req0; /**< if != NULL, register requirements
39 for this parameter (or the first
41 const arch_register_req_t *req1; /**< if != NULL, register requirements
42 for the 2nd part of the parameter */
43 const arch_register_t *reg0;
44 const arch_register_t *reg1;
46 ir_type *type; /**< indicates that an entity of the specific
48 unsigned offset; /**< if transmitted via stack, the offset for
50 ir_entity *entity; /**< entity in frame type */
53 /** The calling convention info for one call site. */
54 struct calling_convention_t
56 bool omit_fp; /**< do not use frame pointer (and no
58 reg_or_stackslot_t *parameters; /**< parameter info. */
59 unsigned param_stack_size; /**< stack size for parameters */
60 unsigned n_param_regs; /**< number of values passed in a
62 reg_or_stackslot_t *results; /**< result info. */
63 unsigned n_reg_results;
64 unsigned *caller_saves; /**< bitset of caller save registers */
68 * Determine how function parameters and return values are passed.
69 * Decides what goes to register or to stack and what stack offsets/
72 * @param function_type the type of the caller/callee function
73 * @param caller true for convention for the caller, false for callee
75 calling_convention_t *sparc_decide_calling_convention(ir_type *function_type,
79 * free memory used by a calling_convention_t
81 void sparc_free_calling_convention(calling_convention_t *cconv);
83 void sparc_cconv_init(void);