sim/ppc/vm.h

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19     */
  20
  21
  22 #ifndef _VM_H_
  23 #define _VM_H_
  24
  25 #ifndef INLINE_VM
  26 #define INLINE_VM
  27 #endif
  28
  29 typedef struct _vm vm;
  30 typedef struct _vm_data_map vm_data_map;
  31 typedef struct _vm_instruction_map vm_instruction_map;
  32
  33
  34 /* each PowerPC requires two virtual memory maps */
  35
  36 INLINE_VM vm *vm_create
  37 (core *memory);
  38
  39 INLINE_VM vm_data_map *vm_create_data_map
  40 (vm *memory);
  41
  42 INLINE_VM vm_instruction_map *vm_create_instruction_map
  43 (vm *memory);
  44
  45
  46 /* address translation, if the translation is invalid
  47    these will not return */
  48
  49 INLINE_VM unsigned_word vm_real_data_addr
  50 (vm_data_map *data_map,
  51  unsigned_word ea,
  52  int is_read,
  53  cpu *processor,
  54  unsigned_word cia);
  55
  56 INLINE_VM unsigned_word vm_real_instruction_addr
  57 (vm_instruction_map *instruction_map,
  58  cpu *processor,
  59  unsigned_word cia);
  60
  61
  62 /* block transfers */
  63
  64 INLINE_VM int vm_data_map_read_buffer
  65 (vm_data_map *data_map,
  66  void *target,
  67  unsigned_word addr,
  68  unsigned len,
  69  transfer_mode mode);
  70
  71 INLINE_VM int vm_data_map_write_buffer
  72 (vm_data_map *data_map,
  73  const void *source,
  74  unsigned_word addr,
  75  unsigned len,
  76  transfer_mode mode,
  77  int violate_read_only_section);
  78
  79
  80 /* fetch the next instruction from memory */
  81
  82 INLINE_VM instruction_word vm_instruction_map_read
  83 (vm_instruction_map *instruction_map,
  84  cpu *processor,
  85  unsigned_word cia);
  86
  87
  88 /* read data from memory */
  89
  90 #define DECLARE_VM_DATA_MAP_READ_N(N) \
  91 INLINE_VM unsigned_##N vm_data_map_read_##N \
  92 (vm_data_map *map, \
  93  unsigned_word ea, \
  94  cpu *processor, \
  95  unsigned_word cia);
  96
  97 DECLARE_VM_DATA_MAP_READ_N(1)
  98 DECLARE_VM_DATA_MAP_READ_N(2)
  99 DECLARE_VM_DATA_MAP_READ_N(4)
 100 DECLARE_VM_DATA_MAP_READ_N(8)
 101
 102
 103 /* write data to memory */
 104
 105 #define DECLARE_VM_DATA_MAP_WRITE_N(N) \
 106 INLINE_VM void vm_data_map_write_##N \
 107 (vm_data_map *map, \
 108  unsigned_word addr, \
 109  unsigned_##N val, \
 110  cpu *processor, \
 111  unsigned_word cia);
 112
 113 DECLARE_VM_DATA_MAP_WRITE_N(1)
 114 DECLARE_VM_DATA_MAP_WRITE_N(2)
 115 DECLARE_VM_DATA_MAP_WRITE_N(4)
 116 DECLARE_VM_DATA_MAP_WRITE_N(8)
 117
 118
 119 /* update vm data structures due to a synchronization point */
 120
 121 INLINE_VM void vm_synchronize_context
 122 (vm *memory,
 123  spreg *sprs,
 124  sreg *srs,
 125  msreg msr);
 126
 127 #endif