sim/d30v/alu.h

   1 /* Mitsubishi Electric Corp. D30V Simulator.
   2    Copyright (C) 1997, Free Software Foundation, Inc.
   3    Contributed by Cygnus Support.
   4
   5 This file is part of GDB, the GNU debugger.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with this program; if not, write to the Free Software Foundation, Inc.,
  19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21
  22 #ifndef _D30V_ALU_H_
  23 #define _D30V_ALU_H_
  24
  25 #define ALU_CARRY (PSW_VAL(PSW_C) != 0)
  26
  27 #include "sim-alu.h"
  28
  29 #define ALU16_END(TARG, HIGH)                                           \
  30 {                                                                       \
  31   unsigned32 mask, value;                                               \
  32   if (ALU16_HAD_OVERFLOW) {                                             \
  33     mask = BIT32 (PSW_V) | BIT32 (PSW_VA) | BIT32 (PSW_C);              \
  34     value = BIT32 (PSW_V) | BIT32 (PSW_VA);                             \
  35   }                                                                     \
  36   else {                                                                \
  37     mask = BIT32 (PSW_V) | BIT32 (PSW_C);                               \
  38     value = 0;                                                          \
  39   }                                                                     \
  40   if (ALU16_HAD_CARRY_BORROW)                                           \
  41     value |= BIT32 (PSW_C);                                             \
  42   if (HIGH)                                                             \
  43     WRITE32_QUEUE_MASK (TARG, ALU16_OVERFLOW_RESULT<<16, 0xffff0000);   \
  44   else                                                                  \
  45     WRITE32_QUEUE_MASK (TARG, ALU16_OVERFLOW_RESULT, 0x0000ffff);       \
  46   WRITE32_QUEUE_MASK (&PSW, value, mask);                               \
  47 }
  48
  49 #define ALU32_END(TARG)                                                 \
  50 {                                                                       \
  51   unsigned32 mask, value;                                               \
  52   if (ALU32_HAD_OVERFLOW) {                                             \
  53     mask = BIT32 (PSW_V) | BIT32 (PSW_VA) | BIT32 (PSW_C);              \
  54     value = BIT32 (PSW_V) | BIT32 (PSW_VA);                             \
  55   }                                                                     \
  56   else {                                                                \
  57     mask = BIT32 (PSW_V) | BIT32 (PSW_C);                               \
  58     value = 0;                                                          \
  59   }                                                                     \
  60   if (ALU32_HAD_CARRY_BORROW)                                           \
  61     value |= BIT32 (PSW_C);                                             \
  62   WRITE32_QUEUE (TARG, ALU32_OVERFLOW_RESULT);                          \
  63   WRITE32_QUEUE_MASK (&PSW, value, mask);                               \
  64 }
  65
  66 #define ALU_END(TARG) ALU32_END(TARG)
  67
  68
  69 /* PSW & Flag manipulation */
  70
  71 #define PSW_SET(BIT,VAL) BLIT32(PSW, (BIT), (VAL))
  72 #define PSW_VAL(BIT) EXTRACTED32(PSW, (BIT), (BIT))
  73
  74 #define PSW_F(FLAG) (17 + ((FLAG) % 8) * 2)
  75 #define PSW_FLAG_SET(FLAG,VAL) PSW_SET(PSW_F(FLAG), VAL)
  76 #define PSW_FLAG_VAL(FLAG) PSW_VAL(PSW_F(FLAG))
  77
  78 #define PSW_SET_QUEUE(BIT,VAL)                                          \
  79 do {                                                                    \
  80   unsigned32 mask = BIT32 (BIT);                                        \
  81   unsigned32 bitval = (VAL) ? mask : 0;                                 \
  82   WRITE32_QUEUE_MASK (&PSW, bitval, mask);                              \
  83 } while (0)
  84
  85 #define PSW_FLAG_SET_QUEUE(FLAG,VAL)                                    \
  86 do {                                                                    \
  87   unsigned32 mask = BIT32 (PSW_F (FLAG));                               \
  88   unsigned32 bitval = (VAL) ? mask : 0;                                 \
  89   WRITE32_QUEUE_MASK (&PSW, bitval, mask);                              \
  90 } while (0)
  91
  92 /* Bring data in from the cold */
  93
  94 #define IMEM(EA) \
  95 (sim_core_read_8(STATE_CPU (sd, 0), cia, exec_map, (EA)))
  96
  97 #define MEM(SIGN, EA, NR_BYTES) \
  98 ((SIGN##_##NR_BYTES) sim_core_read_unaligned_##NR_BYTES(STATE_CPU (sd, 0), cia, read_map, (EA)))
  99
 100 #define STORE(EA, NR_BYTES, VAL) \
 101 do { \
 102   sim_core_write_unaligned_##NR_BYTES(STATE_CPU (sd, 0), cia, write_map, (EA), (VAL)); \
 103 } while (0)
 104
 105
 106 #endif