156 lines
3.8 KiB
C
156 lines
3.8 KiB
C
/* This file is part of the program psim.
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Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
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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
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _CORE_H_
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#define _CORE_H_
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#ifndef INLINE_CORE
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#define INLINE_CORE
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#endif
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/* basic types */
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typedef struct _core core;
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typedef struct _core_map core_map;
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/* constructor */
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INLINE_CORE core *core_create
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(void);
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INLINE_CORE const device *core_device_create
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(core *);
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/* the core has three sub mappings that the more efficient
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read/write fixed quantity functions use */
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INLINE_CORE core_map *core_readable
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(core *memory);
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INLINE_CORE core_map *core_writeable
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(core *memory);
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INLINE_CORE core_map *core_executable
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(core *memory);
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/* operators to add/remove a mapping in the core
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callback-memory:
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All access are passed onto the specified devices callback routines
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after being `translated'. DEFAULT indicates that the specified
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memory should be called if all other mappings fail.
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For callback-memory, the device must be specified.
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raw-memory:
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While RAM could be implemented using the callback interface
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core instead treats it as the common case including the code
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directly in the read/write operators.
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For raw-memory, the device is ignored and the core alloc's a
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block to act as the memory.
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default-memory:
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Should, for the core, there be no defined mapping for a given
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address then the default map (if present) is called.
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For default-memory, the device must be specified. */
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INLINE_CORE void core_attach
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(core *map,
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attach_type attach,
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int address_space,
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access_type access,
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unsigned_word addr,
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unsigned nr_bytes, /* host limited */
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const device *device); /*callback/default*/
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INLINE_CORE void core_detach
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(core *map,
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attach_type attach,
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int address_space,
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unsigned_word addr,
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unsigned nr_bytes, /* host limited */
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access_type access,
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const device *device); /*callback/default*/
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/* Variable sized read/write:
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Transfer (zero) a variable size block of data between the host and
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target (possibly byte swapping it). Should any problems occure,
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the number of bytes actually transfered is returned. */
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INLINE_CORE unsigned core_map_read_buffer
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(core_map *map,
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void *buffer,
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unsigned_word addr,
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unsigned nr_bytes);
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INLINE_CORE unsigned core_map_write_buffer
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(core_map *map,
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const void *buffer,
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unsigned_word addr,
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unsigned nr_bytes);
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/* Fixed sized read/write:
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Transfer a fixed amout of memory between the host and target. The
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memory always being translated and the operation always aborting
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should a problem occure */
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#define DECLARE_CORE_WRITE_N(N) \
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INLINE_CORE void core_map_write_##N \
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(core_map *map, \
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unsigned_word addr, \
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unsigned_##N val, \
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cpu *processor, \
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unsigned_word cia);
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DECLARE_CORE_WRITE_N(1)
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DECLARE_CORE_WRITE_N(2)
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DECLARE_CORE_WRITE_N(4)
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DECLARE_CORE_WRITE_N(8)
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DECLARE_CORE_WRITE_N(word)
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#define DECLARE_CORE_READ_N(N) \
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INLINE_CORE unsigned_##N core_map_read_##N \
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(core_map *map, \
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unsigned_word addr, \
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cpu *processor, \
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unsigned_word cia);
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DECLARE_CORE_READ_N(1)
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DECLARE_CORE_READ_N(2)
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DECLARE_CORE_READ_N(4)
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DECLARE_CORE_READ_N(8)
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DECLARE_CORE_READ_N(word)
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#endif
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