sim/microblaze/microblaze.h

   1 #ifndef MICROBLAZE_H
   2 #define MICROBLAZE_H
   3
   4 /* Copyright 2009, 2010 Free Software Foundation, Inc.
   5
   6    This file is part of the Xilinx MicroBlaze simulator.
   7
   8    This library is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21    MA 02110-1301, USA.  */
  22
  23 #include "../../opcodes/microblaze-opcm.h"
  24
  25 #define GET_RD  ((inst & RD_MASK) >> RD_LOW)
  26 #define GET_RA  ((inst & RA_MASK) >> RA_LOW)
  27 #define GET_RB  ((inst & RB_MASK) >> RB_LOW)
  28
  29 #define CPU     microblaze_state.cpu[0].microblaze_cpu
  30
  31 #define RD      CPU.regs[rd]
  32 #define RA      CPU.regs[ra]
  33 #define RB      CPU.regs[rb]
  34 /* #define IMM     immword */
  35
  36 #define SA      CPU.spregs[IMM & 0x1]
  37
  38 #define IMM_H   CPU.imm_high
  39 #define IMM_L   ((inst & IMM_MASK) >> IMM_LOW)
  40
  41 #define IMM_ENABLE CPU.imm_enable
  42
  43 #define IMM             (IMM_ENABLE ?                                   \
  44                          (((uhalf)IMM_H << 16) | (uhalf)IMM_L) :        \
  45                          (imm_unsigned ?                                \
  46                           (0xFFFF & IMM_L) :                            \
  47                           (IMM_L & 0x8000 ?                             \
  48                            (0xFFFF0000 | IMM_L) :                       \
  49                            (0x0000FFFF & IMM_L))))
  50
  51 #define PC      CPU.spregs[0]
  52 #define MSR     CPU.spregs[1]
  53 #define SP      CPU.regs[29]
  54 #define RETREG  CPU.regs[3]
  55
  56
  57 #define MEM(X)  memory[X]
  58
  59 #define MEM_RD_BYTE(X)  rbat(X)
  60 #define MEM_RD_HALF(X)  rhat(X)
  61 #define MEM_RD_WORD(X)  rlat(X)
  62 #define MEM_RD_UBYTE(X) (ubyte) MEM_RD_BYTE(X)
  63 #define MEM_RD_UHALF(X) (uhalf) MEM_RD_HALF(X)
  64 #define MEM_RD_UWORD(X) (uword) MEM_RD_WORD(X)
  65
  66 #define MEM_WR_BYTE(X, D) wbat(X, D)
  67 #define MEM_WR_HALF(X, D) what(X, D)
  68 #define MEM_WR_WORD(X, D) wlat(X, D)
  69
  70
  71 #define MICROBLAZE_SEXT8(X)     ((char) X)
  72 #define MICROBLAZE_SEXT16(X)    ((short) X)
  73
  74
  75 #define CARRY           carry
  76 #define C_rd            ((MSR & 0x4) >> 2)
  77 #define C_wr(D)         MSR = (D ? MSR | 0x80000004 : MSR & 0x7FFFFFFB)
  78
  79 #define C_calc(X, Y, C) ((((uword)Y == MAX_WORD) && (C == 1)) ?          \
  80                          1 :                                             \
  81                          ((MAX_WORD - (uword)X) < ((uword)Y + C)))
  82
  83 #define BIP_MASK        0x00000008
  84 #define CARRY_MASK      0x00000004
  85 #define INTR_EN_MASK    0x00000002
  86 #define BUSLOCK_MASK    0x00000001
  87
  88 #define DELAY_SLOT      delay_slot_enable = 1
  89 #define BRANCH          branch_taken = 1
  90
  91 #define NUM_REGS        32
  92 #define NUM_SPECIAL     2
  93 #define INST_SIZE       4
  94
  95 #define MAX_WORD        0xFFFFFFFF
  96 #define MICROBLAZE_HALT_INST  0xb8000000
  97
  98 typedef char            byte;
  99 typedef short           half;
 100 typedef int             word;
 101 typedef unsigned char   ubyte;
 102 typedef unsigned short  uhalf;
 103 typedef unsigned int    uword;
 104
 105 #endif /* MICROBLAZE_H */
 106