78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
#ifndef IVL_device_H
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#define IVL_device_H
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/*
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* Copyright (c) 2001-2014 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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# include <ivl_target.h>
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/*
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* This code generator supports a variety of device types. It does
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* this by keeping a device "driver" structure for each device
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* type. The device structure contains pointers to functions that emit
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* the proper XNF for a given type of device.
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*
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* If a device supports a method, the function pointer is filled in
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* with a pointer to the proper function.
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*
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* If a device does not support the method, then the pointer is null.
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*/
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typedef const struct device_s* device_t;
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struct device_s {
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/* These methods draw leading and trailing format text. */
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void (*show_header)(ivl_design_t des);
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void (*show_footer)(ivl_design_t des);
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/* Draw scopes marked by ivl_synthesis_cell */
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void (*show_cell_scope)(ivl_scope_t net);
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/* Draw pads connected to the specified signal. */
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void (*show_pad)(ivl_signal_t sig, const char*str);
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/* Draw basic logic devices. */
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void (*show_logic)(ivl_net_logic_t net);
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/* This method emits a D type Flip-Flop */
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void (*show_dff)(ivl_lpm_t net);
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/* These methods show various comparators */
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void (*show_cmp_eq)(ivl_lpm_t net);
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void (*show_cmp_ne)(ivl_lpm_t net);
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void (*show_cmp_ge)(ivl_lpm_t net);
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void (*show_cmp_gt)(ivl_lpm_t net);
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/* This method draws MUX devices */
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void (*show_mux)(ivl_lpm_t net);
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/* This method draws ADD devices */
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void (*show_add)(ivl_lpm_t net);
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void (*show_sub)(ivl_lpm_t net);
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/* These methods draw SHIFT devices */
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void (*show_shiftl)(ivl_lpm_t net);
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void (*show_shiftr)(ivl_lpm_t net);
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/* Multipliers */
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void (*show_mult)(ivl_lpm_t net);
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/* Constants */
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void (*show_constant)(ivl_net_const_t net);
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};
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/*
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* Return the device_t cookie given the name of the architecture. If
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* the device is not found, return 0.
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*
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* This function is used if the user specifies the architecture
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* explicitly, with the -parch=name flag.
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*/
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extern device_t device_from_arch(const char*arch);
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#endif /* IVL_device_H */
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