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#ifndef IVL_device_H
#define IVL_device_H
/*
* Copyright (c) 2001-2014 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form 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 the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
# include <ivl_target.h>
/*
* This code generator supports a variety of device types. It does
* this by keeping a device "driver" structure for each device
* type. The device structure contains pointers to functions that emit
* the proper XNF for a given type of device.
*
* If a device supports a method, the function pointer is filled in
* with a pointer to the proper function.
*
* If a device does not support the method, then the pointer is null.
*/
typedef const struct device_s* device_t;
struct device_s {
/* These methods draw leading and trailing format text. */
void (*show_header)(ivl_design_t des);
void (*show_footer)(ivl_design_t des);
/* Draw scopes marked by ivl_synthesis_cell */
void (*show_cell_scope)(ivl_scope_t net);
/* Draw pads connected to the specified signal. */
void (*show_pad)(ivl_signal_t sig, const char*str);
/* Draw basic logic devices. */
void (*show_logic)(ivl_net_logic_t net);
/* This method emits a D type Flip-Flop */
void (*show_dff)(ivl_lpm_t net);
/* These methods show various comparators */
void (*show_cmp_eq)(ivl_lpm_t net);
void (*show_cmp_ne)(ivl_lpm_t net);
void (*show_cmp_ge)(ivl_lpm_t net);
void (*show_cmp_gt)(ivl_lpm_t net);
/* This method draws MUX devices */
void (*show_mux)(ivl_lpm_t net);
/* This method draws ADD devices */
void (*show_add)(ivl_lpm_t net);
void (*show_sub)(ivl_lpm_t net);
/* These methods draw SHIFT devices */
void (*show_shiftl)(ivl_lpm_t net);
void (*show_shiftr)(ivl_lpm_t net);
/* Multipliers */
void (*show_mult)(ivl_lpm_t net);
/* Constants */
void (*show_constant)(ivl_net_const_t net);
};
/*
* Return the device_t cookie given the name of the architecture. If
* the device is not found, return 0.
*
* This function is used if the user specifies the architecture
* explicitly, with the -parch=name flag.
*/
extern device_t device_from_arch(const char*arch);
#endif /* IVL_device_H */
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