1 /* Copyright 2009 Free Software Foundation, Inc.
3 This file is part of the Xilinx MicroBlaze simulator.
5 This library 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 3 of the License, or
8 (at your option) any later version.
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.
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., 51 Franklin Street - Fifth Floor, Boston,
18 MA 02110-1301, USA. */
21 * MICROBLAZE Instruction Set Architecture
33 CARRY = C_calc(RA, RB, 0);
41 CARRY = C_calc(RB, ~RA, 1);
49 CARRY = C_calc(RA, RB, C_rd);
57 CARRY = C_calc(RB, ~RA, C_rd);
78 int tmp_reg = RB + ~RA + 1;
79 if ((RB & 0x80000000) ^ (RA & 0x80000000)) {
80 tmp_reg = ((tmp_reg & 0x7fffffff) | (RB & 0x80000000));
90 int tmp_reg = RB + ~RA + 1;
91 if ((RB & 0x80000000) ^ (RA & 0x80000000)) {
92 tmp_reg = ((tmp_reg & 0x7fffffff) | (RA & 0x80000000));
107 RD = RB + ~RA + C_rd;
113 CARRY = C_calc(RA, IMM, 0);
121 CARRY = C_calc(IMM, ~RA, 1);
129 CARRY = C_calc(RA, IMM, C_rd);
130 RD = RA + IMM + C_rd;
137 CARRY = C_calc(IMM, ~RA, C_rd);
138 RD = IMM + ~RA + C_rd;
157 RD = RA + IMM + C_rd;
163 RD = IMM + ~RA + C_rd;
175 RD = (uword)RA >> RB;
187 RD = (uword)RA << RB;
193 RD = (word) RB / (word) RA;
199 RD = (uword) RB / (uword) RA;
210 INST_TYPE_RD_RA_IMM5,
211 RD = (uword)RA >> (IMM & 0x1F);
216 INST_TYPE_RD_RA_IMM5,
217 RD = (word)RA >> (IMM & 0x1F);
222 INST_TYPE_RD_RA_IMM5,
223 RD = (uword)RA << (IMM & 0x1F);
294 RD = (int) (RA >> 1);
302 RD = ((((int) (RA >> 1)) & 0x7FFFFFFF) | (uword)(C_rd << 31));
310 RD = (uword) ((RA >> 1) & 0x7FFFFFFF);
317 RD = MICROBLAZE_SEXT8(RA);
323 RD = MICROBLAZE_SEXT16(RA);
390 INSTRUCTION(microblaze_brk,
395 MSR = MSR | BIP_MASK;
565 MSR = MSR | INTR_EN_MASK;
573 MSR = MSR & ~BIP_MASK;
624 MSR = MSR | BIP_MASK;
756 RD = (MEM_RD_UBYTE(RA + RB));
762 RD = (MEM_RD_UHALF((RA + RB) & ~0x1));
768 RD = (MEM_RD_WORD((RA + RB) & ~0x3));
774 MEM_WR_BYTE(RA + RB, RD);
780 MEM_WR_HALF((RA + RB) & ~0x1, RD);
786 MEM_WR_WORD((RA + RB) & ~0x3, RD);
792 RD = (MEM_RD_UBYTE(RA + IMM));
798 RD = (MEM_RD_UHALF((RA+IMM) & ~0x1));
804 RD = (MEM_RD_WORD((RA+IMM) & ~0x3));
810 MEM_WR_BYTE(RA + IMM, RD);
816 MEM_WR_HALF((RA + IMM) & ~0x1, RD);
822 MEM_WR_WORD((RA + IMM) & ~0x3, RD);