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/* Prototypes for exported functions defined in cr16.cc
Copyright (C) 2012-2022 Free Software Foundation, Inc.
Contributed by KPIT Cummins Infosystems Limited.
This file is part of GCC.
GCC 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 3, or (at your
option) any later version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_CR16_PROTOS_H
#define GCC_CR16_PROTOS_H
/* Register usage. */
extern enum reg_class cr16_regno_reg_class (int);
/* Passing function arguments. */
extern int cr16_function_arg_regno_p (int);
#ifdef TREE_CODE
#ifdef RTX_CODE
extern void cr16_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx);
#endif /* RTX_CODE. */
#endif /* TREE_CODE. */
/* Enumeration giving the various data models we support. */
enum data_model_type
{
DM_DEFAULT, /* Default data model (in CR16C/C+ - up to 16M). */
DM_NEAR, /* Near data model (in CR16C/C+ - up to 1M). */
DM_FAR, /* Far data model (in CR16C+ - up to 4G)
(in CR16C - up to 16M). */
ILLEGAL_DM /* Illegal data model. */
};
#ifdef RTX_CODE
/* Addressing Modes. */
struct cr16_address
{
rtx base; /* Base register: Any register or register pair. */
rtx index; /* Index register: If one is present. */
rtx disp; /* Displacement or Absolute address. */
enum data_model_type data; /* data ref type. */
int code; /* Whether the address is code address.
0 - data, 1 - code label, 2 - function label. */
};
enum cr16_addrtype
{
CR16_INVALID,
CR16_REG_REL,
CR16_REGP_REL,
CR16_INDEX_REGP_REL,
CR16_ABSOLUTE
};
extern int cr16_operand_bit_pos (int val, int bitval);
extern void cr16_decompose_const (rtx x, int *code,
enum data_model_type *data,
bool treat_as_const);
extern enum cr16_addrtype cr16_decompose_address (rtx addr,
struct cr16_address *out,
bool debug_print,
bool treat_as_const);
extern int cr16_const_double_ok (rtx op);
extern int legitimate_pic_operand_p (rtx);
extern rtx legitimize_pic_address (rtx, machine_mode, rtx);
/* Prologue/Epilogue functions. */
extern int cr16_initial_elimination_offset (int, int);
extern char *cr16_prepare_push_pop_string (int);
extern void cr16_expand_prologue (void);
extern void cr16_expand_epilogue (void);
extern const char *cr16_emit_add_sub_di (rtx *, enum rtx_code);
extern const char *cr16_emit_logical_di (rtx *, enum rtx_code);
#endif /* RTX_CODE. */
/* Handling the "interrupt" attribute. */
extern int cr16_interrupt_function_p (void);
extern bool cr16_is_data_model (enum data_model_type);
extern poly_int64 cr16_push_rounding (poly_int64);
#endif /* Not GCC_CR16_PROTOS_H. */
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