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https://git.code.sf.net/p/fuse-emulator/fuse
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82 lines
3.0 KiB
C
82 lines
3.0 KiB
C
/* loader_internals.h: internal loader detection interfaces
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Copyright (c) 2006-2018 Philip Kendall
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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Author contact information:
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E-mail: philip-fuse@shadowmagic.org.uk
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*/
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#ifndef FUSE_LOADER_INTERNALS_H
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#define FUSE_LOADER_INTERNALS_H
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#include <stddef.h>
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#include "libspectrum.h"
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#define LOADER_PATTERN_MAX_ALTERNATIVES 4
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typedef enum acceleration_mode_t {
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ACCELERATION_MODE_NONE = 0,
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ACCELERATION_MODE_INCREASING,
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ACCELERATION_MODE_DECREASING,
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ACCELERATION_MODE_SOFTWARE_PROJECTS,
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ACCELERATION_MODE_GREMLIN_RISING,
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ACCELERATION_MODE_GREMLIN_FALLING,
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} acceleration_mode_t;
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typedef struct loader_pattern_byte_t {
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libspectrum_byte values[ LOADER_PATTERN_MAX_ALTERNATIVES ];
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libspectrum_byte masks[ LOADER_PATTERN_MAX_ALTERNATIVES ];
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size_t alternatives;
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} loader_pattern_byte_t;
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#define LOADER_PATTERN_BYTE( value ) \
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{ .values = { value }, .masks = { 0xff }, .alternatives = 1 }
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#define LOADER_PATTERN_MASKED( value, mask ) \
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{ .values = { value }, .masks = { mask }, .alternatives = 1 }
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#define LOADER_PATTERN_ANY { .alternatives = 0 }
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#define LOADER_PATTERN_ONE_OF_2( a, b ) \
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{ .values = { a, b }, .masks = { 0xff, 0xff }, .alternatives = 2 }
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#define LOADER_PATTERN_ONE_OF_3( a, b, c ) \
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{ .values = { a, b, c }, .masks = { 0xff, 0xff, 0xff }, \
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.alternatives = 3 }
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#define LOADER_PATTERN_ONE_OF_4( a, b, c, d ) \
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{ .values = { a, b, c, d }, .masks = { 0xff, 0xff, 0xff, 0xff }, \
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.alternatives = 4 }
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extern acceleration_mode_t acceleration_mode;
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extern size_t acceleration_pc;
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int loader_pattern_matches( libspectrum_word address,
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const loader_pattern_byte_t *pattern,
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size_t length );
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int loader_word_matches( libspectrum_word address, libspectrum_word value );
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acceleration_mode_t acceleration_detector( libspectrum_word pc );
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acceleration_mode_t acceleration_detector_at_in( libspectrum_word pc );
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int modified_rom_loader_detector( libspectrum_word pc );
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int movieload_loader_detector( libspectrum_word pc );
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int sign_flag_loader_detector( libspectrum_word pc );
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int loader_loop_detector( libspectrum_word pc );
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int ula_read_uses_ear( libspectrum_word pc );
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int ula_read_is_keyboard_scan( libspectrum_word pc );
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void accelerate_loader( int long_pulse );
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#endif /* #ifndef FUSE_LOADER_INTERNALS_H */
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