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2071 lines
45 KiB
C
2071 lines
45 KiB
C
// -*- C -*-
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// Simulator definition for the MIPS DSP ASE.
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// Copyright (C) 2005-2017 Free Software Foundation, Inc.
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// Contributed by MIPS Technologies, Inc. Written by Chao-ying Fu.
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//
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// This file is part of the MIPS sim
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//
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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 3 of the License, or
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// (at your option) any later version.
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//
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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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//
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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, see <http://www.gnu.org/licenses/>.
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// op: 0 = ADD, 1 = SUB, 2 = MUL
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// sat: 0 = no saturation, 1 = saturation
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:function:::void:do_ph_op:int rd, int rs, int rt, int op, int sat
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{
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int i;
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signed32 h0 = 0;
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signed16 h1, h2;
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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unsigned32 result = 0;
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for (i = 0; i < 32; i += 16, v1 >>= 16, v2 >>= 16)
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{
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h1 = (signed16)(v1 & 0xffff);
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h2 = (signed16)(v2 & 0xffff);
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if (op == 0) // ADD
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h0 = (signed32)h1 + (signed32)h2;
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else if (op == 1) // SUB
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h0 = (signed32)h1 - (signed32)h2;
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else // MUL
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h0 = (signed32)h1 * (signed32)h2;
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if (h0 > (signed32)0x7fff || h0 < (signed32)0xffff8000)
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{
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if (op == 0 || op == 1) // ADD, SUB
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DSPCR |= DSPCR_OUFLAG4;
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else if (op == 2) // MUL
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DSPCR |= DSPCR_OUFLAG5;
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if (sat == 1)
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{
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if (h0 > (signed32)0x7fff)
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h0 = 0x7fff;
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else
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h0 = 0x8000;
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}
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}
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result |= ((unsigned32)((unsigned16)h0) << i);
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}
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GPR[rd] = EXTEND32 (result);
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}
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// op: 0 = ADD, 1 = SUB
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:function:::void:do_w_op:int rd, int rs, int rt, int op
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{
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signed64 h0;
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signed32 h1, h2;
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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unsigned32 result = 0;
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h1 = (signed32)v1;
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h2 = (signed32)v2;
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if (op == 0) // ADD
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h0 = (signed64)h1 + (signed64)h2;
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else // SUB
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h0 = (signed64)h1 - (signed64)h2;
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if (((h0 & 0x100000000LL) >> 1) != (h0 & 0x80000000))
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{
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DSPCR |= DSPCR_OUFLAG4;
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if (h0 & 0x100000000LL)
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h0 = 0x80000000;
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else
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h0 = 0x7fffffff;
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}
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GPR[rd] = EXTEND32 (h0);
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}
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// op: 0 = ADD, 1 = SUB
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// sat: 0 = no saturation, 1 = saturation
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:function:::void:do_qb_op:int rd, int rs, int rt, int op, int sat
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{
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int i;
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unsigned32 h0;
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unsigned8 h1, h2;
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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unsigned32 result = 0;
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for (i = 0; i < 32; i += 8, v1 >>= 8, v2 >>= 8)
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{
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h1 = (unsigned8)(v1 & 0xff);
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h2 = (unsigned8)(v2 & 0xff);
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if (op == 0) // ADD
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h0 = (unsigned32)h1 + (unsigned32)h2;
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else // SUB
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h0 = (unsigned32)h1 - (unsigned32)h2;
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if (h0 & 0x100)
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{
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DSPCR |= DSPCR_OUFLAG4;
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if (sat == 1)
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{
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if (op == 0) // ADD
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h0 = 0xff;
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else // SUB
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h0 = 0;
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}
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}
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result |= ((unsigned32)((unsigned8)h0) << i);
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}
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GPR[rd] = EXTEND32 (result);
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}
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// op: 0 = left, 1 = right
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:function:::void:do_qb_shift:int rd, int rt, int shift, int op
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{
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int i, j;
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unsigned8 h0;
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unsigned32 v1 = GPR[rt];
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unsigned32 result = 0;
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for (i = 0; i < 32; i += 8, v1 >>= 8)
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{
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h0 = (unsigned8)(v1 & 0xff);
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if (op == 0) // left
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{
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for (j = 7; j >= 8 - shift; j--)
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{
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if (h0 & (1<<j))
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{
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DSPCR |= DSPCR_OUFLAG6;
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break;
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}
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}
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h0 = h0 << shift;
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}
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else // right
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h0 = h0 >> shift;
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result |= ((unsigned32)h0 << i);
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}
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GPR[rd] = EXTEND32 (result);
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}
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// op: 0 = left, 1 = right
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// sat: 0 = no saturation/rounding, 1 = saturation/rounding
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:function:::void:do_ph_shift:int rd, int rt, int shift, int op, int sat
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{
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int i, j;
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signed16 h0;
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unsigned32 v1 = GPR[rt];
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unsigned32 result = 0;
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int setcond;
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for (i = 0; i < 32; i += 16, v1 >>= 16)
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{
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h0 = (signed16)(v1 & 0xffff);
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if (op == 0) // left
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{
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setcond = 0;
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if (h0 & (1<<15))
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{
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for (j = 14; j >= 15 - shift; j--)
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{
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if (!(h0 & (1 << j)))
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{
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DSPCR |= DSPCR_OUFLAG6;
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setcond = 1;
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break;
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}
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}
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}
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else
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{
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for (j = 14; j >= 15 - shift; j--)
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{
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if (h0 & (1 << j))
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{
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DSPCR |= DSPCR_OUFLAG6;
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setcond = 2;
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break;
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}
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}
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}
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h0 = h0 << shift;
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if (sat == 1)
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{
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if (setcond == 2)
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h0 = 0x7fff;
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else if (setcond == 1)
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h0 = 0x8000;
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}
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}
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else // right
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{
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if (sat == 1 && shift != 0 && (h0 & (1 << (shift-1))))
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h0 = (h0 >> shift) + 1;
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else
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h0 = h0 >> shift;
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}
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result |= ((unsigned32)((unsigned16)h0) << i);
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}
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GPR[rd] = EXTEND32 (result);
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}
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:function:::void:do_w_shll:int rd, int rt, int shift
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{
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int i;
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unsigned32 v1 = GPR[rt];
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unsigned32 result = 0;
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int setcond = 0;
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if (v1 & (1 << 31))
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{
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for (i = 30; i >= 31 - shift; i--)
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{
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if (!(v1 & (1 << i)))
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{
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DSPCR |= DSPCR_OUFLAG6;
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setcond = 1;
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break;
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}
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}
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}
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else
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{
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for (i = 30; i >= 31 - shift; i--)
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{
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if (v1 & (1 << i))
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{
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DSPCR |= DSPCR_OUFLAG6;
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setcond = 2;
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break;
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}
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}
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}
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if (setcond == 2)
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result = 0x7fffffff;
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else if (setcond == 1)
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result = 0x80000000;
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else
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result = v1 << shift;
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GPR[rd] = EXTEND32 (result);
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}
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:function:::void:do_ph_s_absq:int rd, int rt
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{
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int i;
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signed16 h0;
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unsigned32 v1 = GPR[rt];
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unsigned32 result = 0;
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for (i = 0; i < 32; i += 16, v1 >>= 16)
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{
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h0 = (signed16)(v1 & 0xffff);
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if (h0 == (signed16)0x8000)
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{
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DSPCR |= DSPCR_OUFLAG4;
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h0 = 0x7fff;
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}
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else if (h0 & 0x8000)
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h0 = -h0;
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result |= ((unsigned32)((unsigned16)h0) << i);
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}
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GPR[rd] = EXTEND32 (result);
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}
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:function:::void:do_w_s_absq:int rd, int rt
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{
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unsigned32 v1 = GPR[rt];
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signed32 h0 = (signed32)v1;
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if (h0 == (signed32)0x80000000)
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{
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DSPCR |= DSPCR_OUFLAG4;
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h0 = 0x7fffffff;
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}
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else if (h0 & 0x80000000)
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h0 = -h0;
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GPR[rd] = EXTEND32 (h0);
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}
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:function:::void:do_qb_s_absq:int rd, int rt
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{
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int i;
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signed8 q0;
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unsigned32 v1 = GPR[rt];
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unsigned32 result = 0;
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for (i = 0; i < 32; i += 8, v1 >>= 8)
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{
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q0 = (signed8)(v1 & 0xff);
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if (q0 == (signed8)0x80)
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{
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DSPCR |= DSPCR_OUFLAG4;
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q0 = 0x7f;
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}
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else if (q0 & 0x80)
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q0 = -q0;
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result |= ((unsigned32)((unsigned8)q0) << i);
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}
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GPR[rd] = EXTEND32 (result);
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}
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:function:::void:do_addsc:int rd, int rs, int rt
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{
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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unsigned64 h0;
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h0 = (unsigned64)v1 + (unsigned64)v2;
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if (h0 & 0x100000000LL)
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DSPCR |= DSPCR_CARRY;
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GPR[rd] = EXTEND32 (h0);
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}
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:function:::void:do_addwc:int rd, int rs, int rt
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{
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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unsigned64 h0;
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signed32 h1 = (signed32) v1;
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signed32 h2 = (signed32) v2;
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h0 = (signed64)h1 + (signed64)h2
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+ (signed64)((DSPCR >> DSPCR_CARRY_SHIFT) & DSPCR_CARRY_MASK);
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if (((h0 & 0x100000000LL) >> 1) != (h0 & 0x80000000))
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DSPCR |= DSPCR_OUFLAG4;
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GPR[rd] = EXTEND32 (h0);
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}
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:function:::void:do_bitrev:int rd, int rt
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{
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int i;
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unsigned32 v1 = GPR[rt];
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unsigned32 h1 = 0;
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for (i = 0; i < 16; i++)
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{
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if (v1 & (1 << i))
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h1 |= (1 << (15 - i));
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}
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GPR[rd] = EXTEND32 (h1);
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}
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// op: 0 = EXTPV, 1 = EXTPDPV
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:function:::void:do_extpv:int rt, int ac, int rs, int op
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{
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unsigned32 size = GPR[rs] & 0x1f;
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do_extp (SD_, rt, ac, size, op);
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}
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// op: 0 = EXTRV, 1 = EXTRV_R, 2 = EXTRV_RS
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:function:::void:do_extrv:int rt, int ac, int rs, int op
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{
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unsigned32 shift = GPR[rs] & 0x1f;
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do_w_extr (SD_, rt, ac, shift, op);
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}
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:function:::void:do_extrv_s_h:int rt, int ac, int rs
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{
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unsigned32 shift = GPR[rs] & 0x1f;
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do_h_extr (SD_, rt, ac, shift);
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}
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:function:::void:do_insv:int rt, int rs
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{
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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unsigned32 pos = (DSPCR >> DSPCR_POS_SHIFT) & DSPCR_POS_MASK;
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unsigned32 size = (DSPCR >> DSPCR_SCOUNT_SHIFT) & DSPCR_SCOUNT_MASK;
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unsigned32 mask1, mask2, mask3, result;
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if (size < 32)
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mask1 = (1 << size) - 1;
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else
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mask1 = 0xffffffff;
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mask2 = (1 << pos) - 1;
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if (pos + size < 32)
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mask3 = ~((1 << (pos + size)) - 1);
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else
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mask3 = 0;
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result = (v2 & mask3) | ((v1 & mask1) << pos) | (v2 & mask2);
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GPR[rt] = EXTEND32 (result);
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}
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// op: 0 = NORMAL, 1 = EXTEND16, 2 = EXTEND32
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:function:::void:do_lxx:int rd, int base, int index, int op
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{
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if (op == 0)
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GPR[rd] = do_load (SD_, AccessLength_BYTE, GPR[base], GPR[index]);
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else if (op == 1)
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GPR[rd] = EXTEND16 (do_load (SD_, AccessLength_HALFWORD, GPR[base], GPR[index]));
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else if (op == 2)
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GPR[rd] = EXTEND32 (do_load (SD_, AccessLength_WORD, GPR[base], GPR[index]));
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}
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:function:::void:do_modsub:int rd, int rs, int rt
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{
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unsigned32 result = 0;
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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unsigned32 decr = v2 & 0xff;
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unsigned32 lastindex = (v2 & 0xffff00) >> 8;
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if (v1 == 0)
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result = lastindex;
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else
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result = v1 - decr;
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GPR[rd] = EXTEND32 (result);
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}
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:function:::void:do_mthlip:int rs, int ac
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{
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unsigned32 pos = (DSPCR >> DSPCR_POS_SHIFT) & DSPCR_POS_MASK;
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DSPHI(ac) = DSPLO(ac);
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DSPLO(ac) = GPR[rs];
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if (pos >= 32)
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Unpredictable ();
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else
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pos += 32;
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DSPCR &= (~DSPCR_POS_SMASK);
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DSPCR |= (pos & DSPCR_POS_MASK) << DSPCR_POS_SHIFT;
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}
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:function:::void:do_mulsaq_s_w_ph:int ac, int rs, int rt
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{
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int i;
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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signed16 h1, h2;
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signed32 result;
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unsigned32 lo = DSPLO(ac);
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unsigned32 hi = DSPHI(ac);
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signed64 prod = (signed64)((((unsigned64)hi) << 32) + (unsigned64)lo);
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for (i = 0; i < 32; i += 16, v1 >>= 16, v2 >>= 16)
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{
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h1 = (signed16)(v1 & 0xffff);
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h2 = (signed16)(v2 & 0xffff);
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if (h1 == (signed16)0x8000 && h2 == (signed16)0x8000)
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{
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DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac));
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result = (signed32) 0x7fffffff;
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}
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else
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result = ((signed32)h1 * (signed32)h2) << 1;
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if (i == 0)
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prod -= (signed64) result;
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else
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prod += (signed64) result;
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}
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DSPLO(ac) = EXTEND32 (prod);
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DSPHI(ac) = EXTEND32 (prod >> 32);
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}
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:function:::void:do_ph_packrl:int rd, int rs, int rt
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{
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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GPR[rd] = EXTEND32 ((v1 << 16) + (v2 >> 16));
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}
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:function:::void:do_qb_pick:int rd, int rs, int rt
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{
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int i, j;
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
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unsigned8 h1, h2;
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unsigned32 result = 0;
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for (i = 0, j = 0; i < 32; i += 8, j++, v1 >>= 8, v2 >>= 8)
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{
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h1 = (unsigned8)(v1 & 0xff);
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h2 = (unsigned8)(v2 & 0xff);
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if (DSPCR & (1 << (DSPCR_CCOND_SHIFT + j)))
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result |= (unsigned32)(h1 << i);
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else
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result |= (unsigned32)(h2 << i);
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}
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GPR[rd] = EXTEND32 (result);
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}
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:function:::void:do_ph_pick:int rd, int rs, int rt
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{
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int i, j;
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unsigned32 v1 = GPR[rs];
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unsigned32 v2 = GPR[rt];
|
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unsigned16 h1, h2;
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unsigned32 result = 0;
|
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for (i = 0, j = 0; i < 32; i += 16, j++, v1 >>= 16, v2 >>= 16)
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{
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h1 = (unsigned16)(v1 & 0xffff);
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h2 = (unsigned16)(v2 & 0xffff);
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if (DSPCR & (1 << (DSPCR_CCOND_SHIFT + j)))
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result |= (unsigned32)(h1 << i);
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else
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result |= (unsigned32)(h2 << i);
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}
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GPR[rd] = EXTEND32 (result);
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}
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|
|
|
// op: 0 = QBR, 1 = QBRA, 2 = QBL, 3 = QBLA
|
|
:function:::void:do_qb_ph_precequ:int rd, int rt, int op
|
|
{
|
|
unsigned32 v1 = GPR[rt];
|
|
if (op == 0)
|
|
GPR[rd] = EXTEND32 ((v1 & 0xff00) << 15) | ((v1 & 0xff) << 7);
|
|
else if (op == 1)
|
|
GPR[rd] = EXTEND32 ((v1 & 0xff0000) << 7) | ((v1 & 0xff) << 7);
|
|
else if (op == 2)
|
|
GPR[rd] = EXTEND32 ((v1 & 0xff000000) >> 1) | ((v1 & 0xff0000) >> 9);
|
|
else if (op == 3)
|
|
GPR[rd] = EXTEND32 ((v1 & 0xff000000) >> 1) | ((v1 & 0xff00) >> 1);
|
|
}
|
|
|
|
// op: 0 = QBR, 1 = QBRA, 2 = QBL, 3 = QBLA
|
|
:function:::void:do_qb_ph_preceu:int rd, int rt, int op
|
|
{
|
|
unsigned32 v1 = GPR[rt];
|
|
if (op == 0)
|
|
GPR[rd] = EXTEND32 ((v1 & 0xff00) << 8) | (v1 & 0xff);
|
|
else if (op == 1)
|
|
GPR[rd] = EXTEND32 ((v1 & 0xff0000) | (v1 & 0xff));
|
|
else if (op == 2)
|
|
GPR[rd] = EXTEND32 ((v1 & 0xff000000) >> 8) | ((v1 & 0xff0000) >> 16);
|
|
else if (op == 3)
|
|
GPR[rd] = EXTEND32 ((v1 & 0xff000000) >> 8) | ((v1 & 0xff00) >> 8);
|
|
}
|
|
|
|
// op: 0 = .PHL, 1 = PHR
|
|
:function:::void:do_w_preceq:int rd, int rt, int op
|
|
{
|
|
unsigned32 v1 = GPR[rt];
|
|
if (op == 0)
|
|
GPR[rd] = EXTEND32 (v1 & 0xffff0000);
|
|
else if (op == 1)
|
|
GPR[rd] = EXTEND32 ((v1 & 0xffff) << 16);
|
|
}
|
|
|
|
:function:::void:do_w_ph_precrq:int rd, int rs, int rt
|
|
{
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
unsigned32 tempu = (v1 & 0xffff0000) >> 16;
|
|
unsigned32 tempv = (v2 & 0xffff0000) >> 16;
|
|
GPR[rd] = EXTEND32 ((tempu << 16) | tempv);
|
|
}
|
|
|
|
// sat: 0 = PRECRQ.QB.PH, 1 = PRECRQU_S.QB.PH
|
|
:function:::void:do_ph_qb_precrq:int rd, int rs, int rt, int sat
|
|
{
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
unsigned32 tempu = 0, tempv = 0, tempw = 0, tempx = 0;
|
|
if (sat == 0)
|
|
{
|
|
tempu = (v1 & 0xff000000) >> 24;
|
|
tempv = (v1 & 0xff00) >> 8;
|
|
tempw = (v2 & 0xff000000) >> 24;
|
|
tempx = (v2 & 0xff00) >> 8;
|
|
}
|
|
else if (sat == 1)
|
|
{
|
|
if (v1 & 0x80000000)
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
tempu = 0;
|
|
}
|
|
else if (!(v1 & 0x80000000) && ((v1 >> 16) > (unsigned32)0x7f80))
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
tempu = 0xff;
|
|
}
|
|
else
|
|
tempu = (v1 & 0x7f800000) >> 23;
|
|
if (v1 & 0x8000)
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
tempv = 0;
|
|
}
|
|
else if (!(v1 & 0x8000) && ((v1 & 0xffff) > (unsigned32)0x7f80))
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
tempv = 0xff;
|
|
}
|
|
else
|
|
tempv = (v1 & 0x7f80) >> 7;
|
|
if (v2 & 0x80000000)
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
tempw = 0;
|
|
}
|
|
else if (!(v2 & 0x80000000) && ((v2 >> 16) > (unsigned32)0x7f80))
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
tempw = 0xff;
|
|
}
|
|
else
|
|
tempw = (v2 & 0x7f800000) >> 23;
|
|
if (v2 & 0x8000)
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
tempx = 0;
|
|
}
|
|
else if (!(v2 & 0x8000) && ((v2 & 0xffff) > (unsigned32)0x7f80))
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
tempx = 0xff;
|
|
}
|
|
else
|
|
tempx = (v2 & 0x7f80) >> 7;
|
|
}
|
|
GPR[rd] = EXTEND32 ((tempu << 24) | (tempv << 16) | (tempw << 8) | tempx);
|
|
}
|
|
|
|
:function:::void:do_w_ph_rs_precrq:int rd, int rs, int rt
|
|
{
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
signed32 h1 = (signed32)v1;
|
|
signed32 h2 = (signed32)v2;
|
|
signed64 temp1 = (signed64)h1 + (signed64)0x8000;
|
|
signed32 temp2;
|
|
signed64 temp3 = (signed64)h2 + (signed64)0x8000;
|
|
signed32 temp4;
|
|
if (((temp1 & 0x100000000LL) >> 1) != (temp1 & 0x80000000))
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
temp2 = 0x7fff;
|
|
}
|
|
else
|
|
temp2 = (signed32)((temp1 & 0xffff0000) >> 16);
|
|
if (((temp3 & 0x100000000LL) >> 1) != (temp3 & 0x80000000))
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG6;
|
|
temp4 = 0x7fff;
|
|
}
|
|
else
|
|
temp4 = (signed32)((temp3 & 0xffff0000) >> 16);
|
|
GPR[rd] = EXTEND32 ((temp2 << 16) | temp4);
|
|
}
|
|
|
|
:function:::void:do_qb_w_raddu:int rd, int rs
|
|
{
|
|
int i;
|
|
unsigned8 h0;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 result = 0;
|
|
for (i = 0; i < 32; i += 8, v1 >>= 8)
|
|
{
|
|
h0 = (unsigned8)(v1 & 0xff);
|
|
result += (unsigned32)h0;
|
|
}
|
|
GPR[rd] = EXTEND32 (result);
|
|
}
|
|
|
|
:function:::void:do_rddsp:int rd, int mask
|
|
{
|
|
unsigned32 result = 0;
|
|
if (mask & 0x1)
|
|
{
|
|
result &= (~DSPCR_POS_SMASK);
|
|
result |= (DSPCR & DSPCR_POS_SMASK);
|
|
}
|
|
if (mask & 0x2)
|
|
{
|
|
result &= (~DSPCR_SCOUNT_SMASK);
|
|
result |= (DSPCR & DSPCR_SCOUNT_SMASK);
|
|
}
|
|
if (mask & 0x4)
|
|
{
|
|
result &= (~DSPCR_CARRY_SMASK);
|
|
result |= (DSPCR & DSPCR_CARRY_SMASK);
|
|
}
|
|
if (mask & 0x8)
|
|
{
|
|
result &= (~DSPCR_OUFLAG_SMASK);
|
|
result |= (DSPCR & DSPCR_OUFLAG_SMASK);
|
|
}
|
|
if (mask & 0x10)
|
|
{
|
|
result &= (~DSPCR_CCOND_SMASK);
|
|
result |= (DSPCR & DSPCR_CCOND_SMASK);
|
|
}
|
|
if (mask & 0x20)
|
|
{
|
|
result &= (~DSPCR_EFI_SMASK);
|
|
result |= (DSPCR & DSPCR_EFI_SMASK);
|
|
}
|
|
GPR[rd] = EXTEND32 (result);
|
|
}
|
|
|
|
// op: 0 = REPL.QB, 1 = REPLV.QB, 2 = REPL.PH, 3 = REPLV.PH
|
|
:function:::void:do_repl:int rd, int p2, int op
|
|
{
|
|
if (op == 0)
|
|
GPR[rd] = EXTEND32 ((p2 << 24) | (p2 << 16) | (p2 << 8) | p2);
|
|
else if (op == 1)
|
|
{
|
|
unsigned32 v1 = GPR[p2] & 0xff;
|
|
GPR[rd] = EXTEND32 ((v1 << 24) | (v1 << 16) | (v1 << 8) | v1);
|
|
}
|
|
else if (op == 2)
|
|
{
|
|
signed32 v1 = p2;
|
|
if (v1 & 0x200)
|
|
v1 |= 0xfffffc00;
|
|
GPR[rd] = EXTEND32 ((v1 << 16) | (v1 & 0xffff));
|
|
}
|
|
else if (op == 3)
|
|
{
|
|
unsigned32 v1 = GPR[p2];
|
|
v1 = v1 & 0xffff;
|
|
GPR[rd] = EXTEND32 ((v1 << 16) | v1);
|
|
}
|
|
}
|
|
|
|
:function:::void:do_shilov:int ac, int rs
|
|
{
|
|
signed32 shift = GPR[rs] & 0x3f;
|
|
do_shilo (SD_, ac, shift);
|
|
}
|
|
|
|
// op: 0 = SHLLV, 1 = SHRAV
|
|
// sat: 0 = normal, 1 = saturate/rounding
|
|
:function:::void:do_ph_shl:int rd, int rt, int rs, int op, int sat
|
|
{
|
|
unsigned32 shift = GPR[rs] & 0xf;
|
|
do_ph_shift (SD_, rd, rt, shift, op, sat);
|
|
}
|
|
|
|
// op: 0 = SHLLV, 1 = SHRLV
|
|
:function:::void:do_qb_shl:int rd, int rt, int rs, int op
|
|
{
|
|
unsigned32 shift = GPR[rs] & 0x7;
|
|
do_qb_shift (SD_, rd, rt, shift, op);
|
|
}
|
|
|
|
:function:::void:do_w_s_shllv:int rd, int rt, int rs
|
|
{
|
|
unsigned32 shift = GPR[rs] & 0x1f;
|
|
do_w_shll (SD_, rd, rt, shift);
|
|
}
|
|
|
|
:function:::void:do_ph_shrlv:int rd, int rt, int rs
|
|
{
|
|
unsigned32 shift = GPR[rs] & 0xf;
|
|
do_ph_shrl (SD_, rd, rt, shift);
|
|
}
|
|
|
|
:function:::void:do_w_r_shrav:int rd, int rt, int rs
|
|
{
|
|
unsigned32 shift = GPR[rs] & 0x1f;
|
|
do_w_shra (SD_, rd, rt, shift);
|
|
}
|
|
|
|
:function:::void:do_wrdsp:int rs, int mask
|
|
{
|
|
unsigned32 v1 = GPR[rs];
|
|
if (mask & 0x1)
|
|
{
|
|
DSPCR &= (~DSPCR_POS_SMASK);
|
|
DSPCR |= (v1 & DSPCR_POS_SMASK);
|
|
}
|
|
if (mask & 0x2)
|
|
{
|
|
DSPCR &= (~DSPCR_SCOUNT_SMASK);
|
|
DSPCR |= (v1 & DSPCR_SCOUNT_SMASK);
|
|
}
|
|
if (mask & 0x4)
|
|
{
|
|
DSPCR &= (~DSPCR_CARRY_SMASK);
|
|
DSPCR |= (v1 & DSPCR_CARRY_SMASK);
|
|
}
|
|
if (mask & 0x8)
|
|
{
|
|
DSPCR &= (~DSPCR_OUFLAG_SMASK);
|
|
DSPCR |= (v1 & DSPCR_OUFLAG_SMASK);
|
|
}
|
|
if (mask & 0x10)
|
|
{
|
|
DSPCR &= (~DSPCR_CCOND_SMASK);
|
|
DSPCR |= (v1 & DSPCR_CCOND_SMASK);
|
|
}
|
|
if (mask & 0x20)
|
|
{
|
|
DSPCR &= (~DSPCR_EFI_SMASK);
|
|
DSPCR |= (v1 & DSPCR_EFI_SMASK);
|
|
}
|
|
}
|
|
|
|
// round: 0 = no rounding, 1 = rounding
|
|
:function:::void:do_qb_shrav:int rd, int rt, int rs, int round
|
|
{
|
|
unsigned32 shift = GPR[rs] & 0x7;
|
|
do_qb_shra (SD_, rd, rt, shift, round);
|
|
}
|
|
|
|
:function:::void:do_append:int rt, int rs, int sa
|
|
{
|
|
unsigned32 v0 = GPR[rs];
|
|
unsigned32 v1 = GPR[rt];
|
|
unsigned32 result;
|
|
unsigned32 mask = (1 << sa) - 1;
|
|
result = (v1 << sa) | (v0 & mask);
|
|
GPR[rt] = EXTEND32 (result);
|
|
}
|
|
|
|
:function:::void:do_balign:int rt, int rs, int bp
|
|
{
|
|
unsigned32 v0 = GPR[rs];
|
|
unsigned32 v1 = GPR[rt];
|
|
unsigned32 result;
|
|
if (bp == 0)
|
|
result = v1;
|
|
else
|
|
result = (v1 << 8 * bp) | (v0 >> 8 * (4 - bp));
|
|
GPR[rt] = EXTEND32 (result);
|
|
}
|
|
|
|
:function:::void:do_ph_w_mulsa:int ac, int rs, int rt
|
|
{
|
|
int i;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
signed16 h1, h2;
|
|
signed32 result;
|
|
unsigned32 lo = DSPLO(ac);
|
|
unsigned32 hi = DSPHI(ac);
|
|
signed64 prod = (signed64)((((unsigned64)hi) << 32) + (unsigned64)lo);
|
|
for (i = 0; i < 32; i += 16, v1 >>= 16, v2 >>= 16)
|
|
{
|
|
h1 = (signed16)(v1 & 0xffff);
|
|
h2 = (signed16)(v2 & 0xffff);
|
|
result = (signed32)h1 * (signed32)h2;
|
|
|
|
if (i == 0)
|
|
prod -= (signed64) result;
|
|
else
|
|
prod += (signed64) result;
|
|
}
|
|
DSPLO(ac) = EXTEND32 (prod);
|
|
DSPHI(ac) = EXTEND32 (prod >> 32);
|
|
}
|
|
|
|
:function:::void:do_ph_qb_precr:int rd, int rs, int rt
|
|
{
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
unsigned32 tempu = (v1 & 0xff0000) >> 16;
|
|
unsigned32 tempv = (v1 & 0xff);
|
|
unsigned32 tempw = (v2 & 0xff0000) >> 16;
|
|
unsigned32 tempx = (v2 & 0xff);
|
|
GPR[rd] = EXTEND32 ((tempu << 24) | (tempv << 16) | (tempw << 8) | tempx);
|
|
}
|
|
|
|
:function:::void:do_prepend:int rt, int rs, int sa
|
|
{
|
|
unsigned32 v0 = GPR[rs];
|
|
unsigned32 v1 = GPR[rt];
|
|
unsigned32 result;
|
|
if (sa == 0)
|
|
result = v1;
|
|
else
|
|
result = (v0 << (32 - sa)) | (v1 >> sa);
|
|
GPR[rt] = EXTEND32 (result);
|
|
}
|
|
|
|
:function:::void:do_w_shra:int rd, int rt, int shift
|
|
{
|
|
unsigned32 result = GPR[rt];
|
|
signed32 h0 = (signed32)result;
|
|
if (shift != 0 && (h0 & (1 << (shift-1))))
|
|
h0 = (h0 >> shift) + 1;
|
|
else
|
|
h0 = h0 >> shift;
|
|
GPR[rd] = EXTEND32 (h0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01010,010000:SPECIAL3:32::ADDQ.PH
|
|
"addq.ph r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_op (SD_, RD, RS, RT, 0, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01110,010000:SPECIAL3:32::ADDQ_S.PH
|
|
"addq_s.ph r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_op (SD_, RD, RS, RT, 0, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,10110,010000:SPECIAL3:32::ADDQ_S.W
|
|
"addq_s.w r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_w_op (SD_, RD, RS, RT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00000,010000:SPECIAL3:32::ADDU.QB
|
|
"addu.qb r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_op (SD_, RD, RS, RT, 0, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00100,010000:SPECIAL3:32::ADDU_S.QB
|
|
"addu_s.qb r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_op (SD_, RD, RS, RT, 0, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01011,010000:SPECIAL3:32::SUBQ.PH
|
|
"subq.ph r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_op (SD_, RD, RS, RT, 1, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01111,010000:SPECIAL3:32::SUBQ_S.PH
|
|
"subq_s.ph r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_op (SD_, RD, RS, RT, 1, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,10111,010000:SPECIAL3:32::SUBQ_S.W
|
|
"subq_s.w r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_w_op (SD_, RD, RS, RT, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00001,010000:SPECIAL3:32::SUBU.QB
|
|
"subu.qb r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_op (SD_, RD, RS, RT, 1, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00101,010000:SPECIAL3:32::SUBU_S.QB
|
|
"subu_s.qb r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_op (SD_, RD, RS, RT, 1, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,10000,010000:SPECIAL3:32::ADDSC
|
|
"addsc r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_addsc (SD_, RD, RS, RT);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,10001,010000:SPECIAL3:32::ADDWC
|
|
"addwc r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_addwc (SD_, RD, RS, RT);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,10010,010000:SPECIAL3:32::MODSUB
|
|
"modsub r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_modsub (SD_, RD, RS, RT);
|
|
}
|
|
|
|
011111,5.RS,00000,5.RD,10100,010000:SPECIAL3:32::RADDU.W.QB
|
|
"raddu.w.qb r<RD>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_qb_w_raddu (SD_, RD, RS);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,01001,010010:SPECIAL3:32::ABSQ_S.PH
|
|
"absq_s.ph r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_s_absq (SD_, RD, RT);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,10001,010010:SPECIAL3:32::ABSQ_S.W
|
|
"absq_s.w r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_w_s_absq (SD_, RD, RT);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01100,010001:SPECIAL3:32::PRECRQ.QB.PH
|
|
"precrq.qb.ph r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_qb_precrq (SD_, RD, RS, RT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,10100,010001:SPECIAL3:32::PRECRQ.PH.W
|
|
"precrq.ph.w r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_w_ph_precrq (SD_, RD, RS, RT);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,10101,010001:SPECIAL3:32::PRECRQ_RS.PH.W
|
|
"precrq_rs.ph.w r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_w_ph_rs_precrq (SD_, RD, RS, RT);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01111,010001:SPECIAL3:32::PRECRQU_S.QB.PH
|
|
"precrqu_s.qb.ph r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_qb_precrq (SD_, RD, RS, RT, 1);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,01100,010010:SPECIAL3:32::PRECEQ.W.PHL
|
|
"preceq.w.phl r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_w_preceq (SD_, RD, RT, 0);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,01101,010010:SPECIAL3:32::PRECEQ.W.PHR
|
|
"preceq.w.phr r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_w_preceq (SD_, RD, RT, 1);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,00100,010010:SPECIAL3:32::PRECEQU.PH.QBL
|
|
"precequ.ph.qbl r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_ph_precequ (SD_, RD, RT, 2);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,00101,010010:SPECIAL3:32::PRECEQU.PH.QBR
|
|
"precequ.ph.qbr r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_ph_precequ (SD_, RD, RT, 0);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,00110,010010:SPECIAL3:32::PRECEQU.PH.QBLA
|
|
"precequ.ph.qbla r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_ph_precequ (SD_, RD, RT, 3);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,00111,010010:SPECIAL3:32::PRECEQU.PH.QBRA
|
|
"precequ.ph.qbra r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_ph_precequ (SD_, RD, RT, 1);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,11100,010010:SPECIAL3:32::PRECEU.PH.QBL
|
|
"preceu.ph.qbl r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_ph_preceu (SD_, RD, RT, 2);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,11101,010010:SPECIAL3:32::PRECEU.PH.QBR
|
|
"preceu.ph.qbr r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_ph_preceu (SD_, RD, RT, 0);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,11110,010010:SPECIAL3:32::PRECEU.PH.QBLA
|
|
"preceu.ph.qbla r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_ph_preceu (SD_, RD, RT, 3);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,11111,010010:SPECIAL3:32::PRECEU.PH.QBRA
|
|
"preceu.ph.qbra r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_ph_preceu (SD_, RD, RT, 1);
|
|
}
|
|
|
|
011111,00,3.SHIFT3,5.RT,5.RD,00000,010011:SPECIAL3:32::SHLL.QB
|
|
"shll.qb r<RD>, r<RT>, <SHIFT3>"
|
|
*dsp:
|
|
{
|
|
do_qb_shift (SD_, RD, RT, SHIFT3, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00010,010011:SPECIAL3:32::SHLLV.QB
|
|
"shllv.qb r<RD>, r<RT>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_qb_shl (SD_, RD, RT, RS, 0);
|
|
}
|
|
|
|
011111,0,4.SHIFT4,5.RT,5.RD,01000,010011:SPECIAL3:32::SHLL.PH
|
|
"shll.ph r<RD>, r<RT>, <SHIFT4>"
|
|
*dsp:
|
|
{
|
|
do_ph_shift (SD_, RD, RT, SHIFT4, 0, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01010,010011:SPECIAL3:32::SHLLV.PH
|
|
"shllv.ph r<RD>, r<RT>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_ph_shl (SD_, RD, RT, RS, 0, 0);
|
|
}
|
|
|
|
011111,0,4.SHIFT4,5.RT,5.RD,01100,010011:SPECIAL3:32::SHLL_S.PH
|
|
"shll_s.ph r<RD>, r<RT>, <SHIFT4>"
|
|
*dsp:
|
|
{
|
|
do_ph_shift (SD_, RD, RT, SHIFT4, 0, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01110,010011:SPECIAL3:32::SHLLV_S.PH
|
|
"shllv_s.ph r<RD>, r<RT>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_ph_shl (SD_, RD, RT, RS, 0, 1);
|
|
}
|
|
|
|
011111,5.SHIFT5,5.RT,5.RD,10100,010011:SPECIAL3:32::SHLL_S.W
|
|
"shll_s.w r<RD>, r<RT>, <SHIFT5>"
|
|
*dsp:
|
|
{
|
|
do_w_shll (SD_, RD, RT, SHIFT5);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,10110,010011:SPECIAL3:32::SHLLV_S.W
|
|
"shllv_s.w r<RD>, r<RT>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_w_s_shllv (SD_, RD, RT, RS);
|
|
}
|
|
|
|
011111,00,3.SHIFT3,5.RT,5.RD,00001,010011:SPECIAL3:32::SHRL.QB
|
|
"shrl.qb r<RD>, r<RT>, <SHIFT3>"
|
|
*dsp:
|
|
{
|
|
do_qb_shift (SD_, RD, RT, SHIFT3, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00011,010011:SPECIAL3:32::SHRLV.QB
|
|
"shrlv.qb r<RD>, r<RT>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_qb_shl (SD_, RD, RT, RS, 1);
|
|
}
|
|
|
|
011111,0,4.SHIFT4,5.RT,5.RD,01001,010011:SPECIAL3:32::SHRA.PH
|
|
"shra.ph r<RD>, r<RT>, <SHIFT4>"
|
|
*dsp:
|
|
{
|
|
do_ph_shift (SD_, RD, RT, SHIFT4, 1, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01011,010011:SPECIAL3:32::SHRAV.PH
|
|
"shrav.ph r<RD>, r<RT>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_ph_shl (SD_, RD, RT, RS, 1, 0);
|
|
}
|
|
|
|
011111,0,4.SHIFT4,5.RT,5.RD,01101,010011:SPECIAL3:32::SHRA_R.PH
|
|
"shra_r.ph r<RD>, r<RT>, <SHIFT4>"
|
|
*dsp:
|
|
{
|
|
do_ph_shift (SD_, RD, RT, SHIFT4, 1, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01111,010011:SPECIAL3:32::SHRAV_R.PH
|
|
"shrav_r.ph r<RD>, r<RT>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_ph_shl (SD_, RD, RT, RS, 1, 1);
|
|
}
|
|
|
|
011111,5.SHIFT5,5.RT,5.RD,10101,010011:SPECIAL3:32::SHRA_R.W
|
|
"shra_r.w r<RD>, r<RT>, <SHIFT5>"
|
|
*dsp:
|
|
{
|
|
do_w_shra (SD_, RD, RT, SHIFT5);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,10111,010011:SPECIAL3:32::SHRAV_R.W
|
|
"shrav_r.w r<RD>, r<RT>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_w_r_shrav (SD_, RD, RT, RS);
|
|
}
|
|
|
|
// loc: 0 = qhl, 1 = qhr
|
|
:function:::void:do_qb_muleu:int rd, int rs, int rt, int loc
|
|
{
|
|
int i;
|
|
unsigned32 result = 0;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
unsigned16 h1, h2;
|
|
unsigned32 prod;
|
|
if (loc == 0)
|
|
v1 >>= 16;
|
|
for (i = 0; i < 32; i += 16, v1 >>= 8, v2 >>= 16)
|
|
{
|
|
h1 = (unsigned16)(v1 & 0xff);
|
|
h2 = (unsigned16)(v2 & 0xffff);
|
|
prod = (unsigned32)h1 * (unsigned32)h2;
|
|
if (prod > 0xffff)
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG5;
|
|
prod = 0xffff;
|
|
}
|
|
result |= ((unsigned32)prod << i);
|
|
}
|
|
GPR[rd] = EXTEND32 (result);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00110,010000:SPECIAL3:32::MULEU_S.PH.QBL
|
|
"muleu_s.ph.qbl r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_muleu (SD_, RD, RS, RT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00111,010000:SPECIAL3:32::MULEU_S.PH.QBR
|
|
"muleu_s.ph.qbr r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_muleu (SD_, RD, RS, RT, 1);
|
|
}
|
|
|
|
// round: 0 = no rounding, 1 = rounding
|
|
:function:::void:do_ph_mulq:int rd, int rs, int rt, int round
|
|
{
|
|
int i;
|
|
unsigned32 result = 0;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
signed16 h1, h2;
|
|
signed32 prod;
|
|
for (i = 0; i < 32; i += 16, v1 >>= 16, v2 >>= 16)
|
|
{
|
|
h1 = (signed16)(v1 & 0xffff);
|
|
h2 = (signed16)(v2 & 0xffff);
|
|
if (h1 == (signed16)0x8000 && h2 == (signed16)0x8000)
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG5;
|
|
prod = 0x7fffffff;
|
|
}
|
|
else
|
|
{
|
|
prod = ((signed32)h1 * (signed32)h2) << 1;
|
|
if (round == 1)
|
|
prod += (signed32)0x8000;
|
|
}
|
|
result |= (((unsigned32)prod >> 16) << i);
|
|
}
|
|
GPR[rd] = EXTEND32 (result);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,11111,010000:SPECIAL3:32::MULQ_RS.PH
|
|
"mulq_rs.ph r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_mulq (SD_, RD, RS, RT, 1);
|
|
}
|
|
|
|
// loc: 0 = phl, 1 = phr
|
|
:function:::void:do_ph_muleq:int rd, int rs, int rt, int loc
|
|
{
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
signed16 h1, h2;
|
|
signed32 prod;
|
|
if (loc == 0)
|
|
{
|
|
h1 = (signed16)(v1 >> 16);
|
|
h2 = (signed16)(v2 >> 16);
|
|
}
|
|
else
|
|
{
|
|
h1 = (signed16)(v1 & 0xffff);
|
|
h2 = (signed16)(v2 & 0xffff);
|
|
}
|
|
if (h1 == (signed16)0x8000 && h2 == (signed16)0x8000)
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG5;
|
|
prod = 0x7fffffff;
|
|
}
|
|
else
|
|
prod = ((signed32)h1 * (signed32)h2) << 1;
|
|
GPR[rd] = EXTEND32 (prod);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,11100,010000:SPECIAL3:32::MULEQ_S.W.PHL
|
|
"muleq_s.w.phl r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_muleq (SD_, RD, RS, RT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,11101,010000:SPECIAL3:32::MULEQ_S.W.PHR
|
|
"muleq_s.w.phr r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_muleq (SD_, RD, RS, RT, 1);
|
|
}
|
|
|
|
// op: 0 = DPAU 1 = DPSU
|
|
// loc: 0 = qbl, 1 = qbr
|
|
:function:::void:do_qb_dot_product:int ac, int rs, int rt, int op, int loc
|
|
{
|
|
int i;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
unsigned8 h1, h2;
|
|
unsigned32 lo = DSPLO(ac);
|
|
unsigned32 hi = DSPHI(ac);
|
|
unsigned64 prod = (((unsigned64)hi) << 32) + (unsigned64)lo;
|
|
if (loc == 0)
|
|
{
|
|
v1 >>= 16;
|
|
v2 >>= 16;
|
|
}
|
|
for (i = 0; i < 16; i += 8, v1 >>= 8, v2 >>= 8)
|
|
{
|
|
h1 = (unsigned8)(v1 & 0xff);
|
|
h2 = (unsigned8)(v2 & 0xff);
|
|
if (op == 0) // DPAU
|
|
prod += (unsigned64)h1 * (unsigned64)h2;
|
|
else // DPSU
|
|
prod -= (unsigned64)h1 * (unsigned64)h2;
|
|
}
|
|
DSPLO(ac) = EXTEND32 (prod);
|
|
DSPHI(ac) = EXTEND32 (prod >> 32);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,00011,110000:SPECIAL3:32::DPAU.H.QBL
|
|
"dpau.h.qbl ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_dot_product (SD_, AC, RS, RT, 0, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,00111,110000:SPECIAL3:32::DPAU.H.QBR
|
|
"dpau.h.qbr ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_dot_product (SD_, AC, RS, RT, 0, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,01011,110000:SPECIAL3:32::DPSU.H.QBL
|
|
"dpsu.h.qbl ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_dot_product (SD_, AC, RS, RT, 1, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,01111,110000:SPECIAL3:32::DPSU.H.QBR
|
|
"dpsu.h.qbr ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_dot_product (SD_, AC, RS, RT, 1, 1);
|
|
}
|
|
|
|
// op: 0 = DPAQ 1 = DPSQ
|
|
:function:::void:do_ph_dot_product:int ac, int rs, int rt, int op
|
|
{
|
|
int i;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
signed16 h1, h2;
|
|
signed32 result;
|
|
unsigned32 lo = DSPLO(ac);
|
|
unsigned32 hi = DSPHI(ac);
|
|
signed64 prod = (signed64)((((unsigned64)hi) << 32) + (unsigned64)lo);
|
|
for (i = 0; i < 32; i += 16, v1 >>= 16, v2 >>= 16)
|
|
{
|
|
h1 = (signed16)(v1 & 0xffff);
|
|
h2 = (signed16)(v2 & 0xffff);
|
|
if (h1 == (signed16)0x8000 && h2 == (signed16)0x8000)
|
|
{
|
|
DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac));
|
|
result = (signed32)0x7fffffff;
|
|
}
|
|
else
|
|
result = ((signed32)h1 * (signed32)h2) << 1;
|
|
|
|
if (op == 0) // DPAQ
|
|
prod += (signed64)result;
|
|
else // DPSQ
|
|
prod -= (signed64)result;
|
|
}
|
|
DSPLO(ac) = EXTEND32 (prod);
|
|
DSPHI(ac) = EXTEND32 (prod >> 32);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,00100,110000:SPECIAL3:32::DPAQ_S.W.PH
|
|
"dpaq_s.w.ph ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_dot_product (SD_, AC, RS, RT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,00101,110000:SPECIAL3:32::DPSQ_S.W.PH
|
|
"dpsq_s.w.ph ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_dot_product (SD_, AC, RS, RT, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,00110,110000:SPECIAL3:32::MULSAQ_S.W.PH
|
|
"mulsaq_s.w.ph ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_mulsaq_s_w_ph (SD_, AC, RS, RT);
|
|
}
|
|
|
|
// op: 0 = DPAQ 1 = DPSQ
|
|
:function:::void:do_w_dot_product:int ac, int rs, int rt, int op
|
|
{
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
signed32 h1, h2;
|
|
signed64 result;
|
|
unsigned32 lo = DSPLO(ac);
|
|
unsigned32 hi = DSPHI(ac);
|
|
unsigned32 resultlo;
|
|
unsigned32 resulthi;
|
|
unsigned32 carry;
|
|
unsigned64 temp1;
|
|
signed64 temp2;
|
|
h1 = (signed32) v1;
|
|
h2 = (signed32) v2;
|
|
if (h1 == 0x80000000 && h2 == 0x80000000)
|
|
{
|
|
DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac));
|
|
result = (signed64) 0x7fffffffffffffffLL;
|
|
}
|
|
else
|
|
result = ((signed64)h1 * (signed64)h2) << 1;
|
|
resultlo = (unsigned32)(result);
|
|
resulthi = (unsigned32)(result >> 32);
|
|
if (op ==0) // DPAQ
|
|
{
|
|
temp1 = (unsigned64)lo + (unsigned64)resultlo;
|
|
carry = (unsigned32)((temp1 >> 32) & 1);
|
|
temp2 = (signed64)((signed32)hi) + (signed64)((signed32)resulthi) +
|
|
(signed64)((signed32)carry);
|
|
}
|
|
else // DPSQ
|
|
{
|
|
temp1 = (unsigned64)lo - (unsigned64)resultlo;
|
|
carry = (unsigned32)((temp1 >> 32) & 1);
|
|
temp2 = (signed64)((signed32)hi) - (signed64)((signed32)resulthi) -
|
|
(signed64)((signed32)carry);
|
|
}
|
|
if (((temp2 & 0x100000000LL) >> 1) != (temp2 & 0x80000000LL))
|
|
{
|
|
DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac));
|
|
if (temp2 & 0x100000000LL)
|
|
{
|
|
DSPLO(ac) = EXTEND32 (0x00000000);
|
|
DSPHI(ac) = EXTEND32 (0x80000000);
|
|
}
|
|
else
|
|
{
|
|
DSPLO(ac) = EXTEND32 (0xffffffff);
|
|
DSPHI(ac) = EXTEND32 (0x7fffffff);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
DSPLO(ac) = EXTEND32 (temp1);
|
|
DSPHI(ac) = EXTEND32 (temp2);
|
|
}
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,01100,110000:SPECIAL3:32::DPAQ_SA.L.W
|
|
"dpaq_sa.l.w ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_w_dot_product (SD_, AC, RS, RT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,01101,110000:SPECIAL3:32::DPSQ_SA.L.W
|
|
"dpsq_sa.l.w ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_w_dot_product (SD_, AC, RS, RT, 1);
|
|
}
|
|
|
|
// op: 0 = MAQ_S 1 = MAQ_SA
|
|
// loc: 0 = phl, 1 = phr
|
|
:function:::void:do_ph_maq:int ac, int rs, int rt, int op, int loc
|
|
{
|
|
int i;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
signed16 h1, h2;
|
|
signed32 result;
|
|
unsigned32 lo = DSPLO(ac);
|
|
unsigned32 hi = DSPHI(ac);
|
|
signed64 prod = (signed64)((((unsigned64)hi) << 32) + (unsigned64)lo);
|
|
if (loc == 0)
|
|
{
|
|
h1 = (signed16)(v1 >> 16);
|
|
h2 = (signed16)(v2 >> 16);
|
|
}
|
|
else
|
|
{
|
|
h1 = (signed16)(v1 & 0xffff);
|
|
h2 = (signed16)(v2 & 0xffff);
|
|
}
|
|
if (h1 == (signed16)0x8000 && h2 == (signed16)0x8000)
|
|
{
|
|
DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac));
|
|
result = (signed32)0x7fffffff;
|
|
}
|
|
else
|
|
result = ((signed32)h1 * (signed32)h2) << 1;
|
|
prod += (signed64)result;
|
|
if (op == 1) // MAQ_SA
|
|
{
|
|
if (prod & 0x8000000000000000LL)
|
|
{
|
|
for (i = 62; i >= 31; i--)
|
|
{
|
|
if (!(prod & ((signed64)1 << i)))
|
|
{
|
|
DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac));
|
|
prod = 0xffffffff80000000LL;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (i = 62; i >= 31; i--)
|
|
{
|
|
if (prod & ((signed64)1 << i))
|
|
{
|
|
DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac));
|
|
prod = 0x7fffffff;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
DSPLO(ac) = EXTEND32 (prod);
|
|
DSPHI(ac) = EXTEND32 (prod >> 32);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,10100,110000:SPECIAL3:32::MAQ_S.W.PHL
|
|
"maq_s.w.phl ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_maq (SD_, AC, RS, RT, 0, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,10110,110000:SPECIAL3:32::MAQ_S.W.PHR
|
|
"maq_s.w.phr ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_maq (SD_, AC, RS, RT, 0, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,10000,110000:SPECIAL3:32::MAQ_SA.W.PHL
|
|
"maq_sa.w.phl ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_maq (SD_, AC, RS, RT, 1, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,10010,110000:SPECIAL3:32::MAQ_SA.W.PHR
|
|
"maq_sa.w.phr ac<AC>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_maq (SD_, AC, RS, RT, 1, 1);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,11011,010010:SPECIAL3:32::BITREV
|
|
"bitrev r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_bitrev (SD_, RD, RT);
|
|
}
|
|
|
|
011111,5.RS,5.RT,00000,00000,001100:SPECIAL3:32::INSV
|
|
"insv r<RT>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_insv (SD_, RT, RS);
|
|
}
|
|
|
|
011111,00,8.IMM8,5.RD,00010,010010:SPECIAL3:32::REPL.QB
|
|
"repl.qb r<RD>, <IMM8>"
|
|
*dsp:
|
|
{
|
|
do_repl (SD_, RD, IMM8, 0);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,00011,010010:SPECIAL3:32::REPLV.QB
|
|
"replv.qb r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_repl (SD_, RD, RT, 1);
|
|
}
|
|
|
|
011111,10.IMM10,5.RD,01010,010010:SPECIAL3:32::REPL.PH
|
|
"repl.ph r<RD>, <IMM10>"
|
|
*dsp:
|
|
{
|
|
do_repl (SD_, RD, IMM10, 2);
|
|
}
|
|
|
|
011111,00000,5.RT,5.RD,01011,010010:SPECIAL3:32::REPLV.PH
|
|
"replv.ph r<RD>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_repl (SD_, RD, RT, 3);
|
|
}
|
|
|
|
// op: 0 = EQ, 1 = LT, 2 = LE
|
|
:function:::void:do_qb_cmpu:int rs, int rt, int op
|
|
{
|
|
int i, j;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
unsigned8 h1, h2;
|
|
unsigned32 mask;
|
|
for (i = 0, j = 0; i < 32; i += 8, j++, v1 >>= 8, v2 >>= 8)
|
|
{
|
|
h1 = (unsigned8)(v1 & 0xff);
|
|
h2 = (unsigned8)(v2 & 0xff);
|
|
mask = ~(1 << (DSPCR_CCOND_SHIFT + j));
|
|
DSPCR &= mask;
|
|
if (op == 0) // EQ
|
|
DSPCR |= ((h1 == h2) << (DSPCR_CCOND_SHIFT + j));
|
|
else if (op == 1) // LT
|
|
DSPCR |= ((h1 < h2) << (DSPCR_CCOND_SHIFT + j));
|
|
else // LE
|
|
DSPCR |= ((h1 <= h2) << (DSPCR_CCOND_SHIFT + j));
|
|
}
|
|
}
|
|
|
|
011111,5.RS,5.RT,00000,00000,010001:SPECIAL3:32::CMPU.EQ.QB
|
|
"cmpu.eq.qb r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_cmpu (SD_, RS, RT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,00000,00001,010001:SPECIAL3:32::CMPU.LT.QB
|
|
"cmpu.lt.qb r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_cmpu (SD_, RS, RT, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,00000,00010,010001:SPECIAL3:32::CMPU.LE.QB
|
|
"cmpu.le.qb r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_cmpu (SD_, RS, RT, 2);
|
|
}
|
|
|
|
// op: 0 = EQ, 1 = LT, 2 = LE
|
|
:function:::void:do_qb_cmpgu:int rd, int rs, int rt, int op
|
|
{
|
|
int i, j;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
unsigned8 h1, h2;
|
|
unsigned32 result = 0;
|
|
for (i = 0, j = 0; i < 32; i += 8, j++, v1 >>= 8, v2 >>= 8)
|
|
{
|
|
h1 = (unsigned8)(v1 & 0xff);
|
|
h2 = (unsigned8)(v2 & 0xff);
|
|
if (op == 0) // EQ
|
|
result |= ((h1 == h2) << j);
|
|
else if (op == 1) // LT
|
|
result |= ((h1 < h2) << j);
|
|
else // LE
|
|
result |= ((h1 <= h2) << j);
|
|
}
|
|
GPR[rd] = EXTEND32 (result);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00100,010001:SPECIAL3:32::CMPGU.EQ.QB
|
|
"cmpgu.eq.qb r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_cmpgu (SD_, RD, RS, RT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00101,010001:SPECIAL3:32::CMPGU.LT.QB
|
|
"cmpgu.lt.qb r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_cmpgu (SD_, RD, RS, RT, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00110,010001:SPECIAL3:32::CMPGU.LE.QB
|
|
"cmpgu.le.qb r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_cmpgu (SD_, RD, RS, RT, 2);
|
|
}
|
|
|
|
// op: 0 = EQ, 1 = LT, 2 = LE
|
|
:function:::void:do_ph_cmpu:int rs, int rt, int op
|
|
{
|
|
int i, j;
|
|
unsigned32 v1 = GPR[rs];
|
|
unsigned32 v2 = GPR[rt];
|
|
signed16 h1, h2;
|
|
unsigned32 mask;
|
|
for (i = 0, j = 0; i < 32; i += 16, j++, v1 >>= 16, v2 >>= 16)
|
|
{
|
|
h1 = (signed16)(v1 & 0xffff);
|
|
h2 = (signed16)(v2 & 0xffff);
|
|
mask = ~(1 << (DSPCR_CCOND_SHIFT + j));
|
|
DSPCR &= mask;
|
|
if (op == 0) // EQ
|
|
DSPCR |= ((h1 == h2) << (DSPCR_CCOND_SHIFT + j));
|
|
else if (op == 1) // LT
|
|
DSPCR |= ((h1 < h2) << (DSPCR_CCOND_SHIFT + j));
|
|
else // LE
|
|
DSPCR |= ((h1 <= h2) << (DSPCR_CCOND_SHIFT + j));
|
|
}
|
|
}
|
|
|
|
011111,5.RS,5.RT,00000,01000,010001:SPECIAL3:32::CMP.EQ.PH
|
|
"cmp.eq.ph r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_cmpu (SD_, RS, RT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,00000,01001,010001:SPECIAL3:32::CMP.LT.PH
|
|
"cmp.lt.ph r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_cmpu (SD_, RS, RT, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,00000,01010,010001:SPECIAL3:32::CMP.LE.PH
|
|
"cmp.le.ph r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_cmpu (SD_, RS, RT, 2);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,00011,010001:SPECIAL3:32::PICK.QB
|
|
"pick.qb r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_qb_pick (SD_, RD, RS, RT);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01011,010001:SPECIAL3:32::PICK.PH
|
|
"pick.ph r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_pick (SD_, RD, RS, RT);
|
|
}
|
|
|
|
011111,5.RS,5.RT,5.RD,01110,010001:SPECIAL3:32::PACKRL.PH
|
|
"packrl.ph r<RD>, r<RS>, r<RT>"
|
|
*dsp:
|
|
{
|
|
do_ph_packrl (SD_, RD, RS, RT);
|
|
}
|
|
|
|
// op: 0 = EXTR, 1 = EXTR_R, 2 = EXTR_RS
|
|
:function:::void:do_w_extr:int rt, int ac, int shift, int op
|
|
{
|
|
int i;
|
|
unsigned32 lo = DSPLO(ac);
|
|
unsigned32 hi = DSPHI(ac);
|
|
unsigned64 prod = (((unsigned64)hi) << 32) + (unsigned64)lo;
|
|
signed64 result = (signed64)prod;
|
|
int setcond = 0;
|
|
if (!(prod & 0x8000000000000000LL))
|
|
{
|
|
for (i = 62; i >= (shift + 31); i--)
|
|
{
|
|
if (prod & ((unsigned64)1 << i))
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG7;
|
|
setcond = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (((prod >> (shift - 1)) & 0xffffffffLL) == 0xffffffffLL)
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG7;
|
|
setcond = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (i = 62; i >= (shift + 31); i--)
|
|
{
|
|
if (!(prod & ((unsigned64)1 << i)))
|
|
{
|
|
DSPCR |= DSPCR_OUFLAG7;
|
|
setcond = 2;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (op == 0) // EXTR
|
|
result = result >> shift;
|
|
else if (op == 1) // EXTR_R
|
|
{
|
|
if (shift != 0)
|
|
result = ((result >> (shift - 1)) + 1) >> 1;
|
|
else
|
|
result = result >> shift;
|
|
}
|
|
else // EXTR_RS
|
|
{
|
|
if (setcond == 1)
|
|
result = 0x7fffffff;
|
|
else if (setcond == 2)
|
|
result = 0x80000000;
|
|
else
|
|
{
|
|
if (shift != 0)
|
|
result = ((result >> (shift - 1)) + 1) >> 1;
|
|
else
|
|
result = result >> shift;
|
|
}
|
|
}
|
|
GPR[rt] = EXTEND32 (result);
|
|
}
|
|
|
|
011111,5.SHIFT,5.RT,000,2.AC,00000,111000:SPECIAL3:32::EXTR.W
|
|
"extr.w r<RT>, ac<AC>, <SHIFT>"
|
|
*dsp:
|
|
{
|
|
do_w_extr (SD_, RT, AC, SHIFT, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,00001,111000:SPECIAL3:32::EXTRV.W
|
|
"extrv.w r<RT>, ac<AC>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_extrv (SD_, RT, AC, RS, 0);
|
|
}
|
|
|
|
011111,5.SHIFT,5.RT,000,2.AC,00100,111000:SPECIAL3:32::EXTR_R.W
|
|
"extr_r.w r<RT>, ac<AC>, <SHIFT>"
|
|
*dsp:
|
|
{
|
|
do_w_extr (SD_, RT, AC, SHIFT, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,00101,111000:SPECIAL3:32::EXTRV_R.W
|
|
"extrv_r.w r<RT>, ac<AC>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_extrv (SD_, RT, AC, RS, 1);
|
|
}
|
|
|
|
011111,5.SHIFT,5.RT,000,2.AC,00110,111000:SPECIAL3:32::EXTR_RS.W
|
|
"extr_rs.w r<RT>, ac<AC>, <SHIFT>"
|
|
*dsp:
|
|
{
|
|
do_w_extr (SD_, RT, AC, SHIFT, 2);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,00111,111000:SPECIAL3:32::EXTRV_RS.W
|
|
"extrv_rs.w r<RT>, ac<AC>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_extrv (SD_, RT, AC, RS, 2);
|
|
}
|
|
|
|
:function:::void:do_h_extr:int rt, int ac, int shift
|
|
{
|
|
int i;
|
|
unsigned32 lo = DSPLO(ac);
|
|
unsigned32 hi = DSPHI(ac);
|
|
unsigned64 prod = (((unsigned64)hi) << 32) + (unsigned64)lo;
|
|
signed64 result = (signed64)prod;
|
|
signed64 value = 0xffffffffffff8000LL;
|
|
result >>= shift;
|
|
if (result > 0x7fff)
|
|
{
|
|
result = 0x7fff;
|
|
DSPCR |= DSPCR_OUFLAG7;
|
|
}
|
|
else if (result < value)
|
|
{
|
|
result = value;
|
|
DSPCR |= DSPCR_OUFLAG7;
|
|
}
|
|
GPR[rt] = EXTEND32 (result);
|
|
}
|
|
|
|
011111,5.SHIFT,5.RT,000,2.AC,01110,111000:SPECIAL3:32::EXTR_S.H
|
|
"extr_s.h r<RT>, ac<AC>, <SHIFT>"
|
|
*dsp:
|
|
{
|
|
do_h_extr (SD_, RT, AC, SHIFT);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,01111,111000:SPECIAL3:32::EXTRV_S.H
|
|
"extrv_s.h r<RT>, ac<AC>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_extrv_s_h (SD_, RT, AC, RS);
|
|
}
|
|
|
|
// op: 0 = EXTP, 1 = EXTPDP
|
|
:function:::void:do_extp:int rt, int ac, int size, int op
|
|
{
|
|
signed32 pos = (DSPCR >> DSPCR_POS_SHIFT) & DSPCR_POS_MASK;
|
|
unsigned32 lo = DSPLO(ac);
|
|
unsigned32 hi = DSPHI(ac);
|
|
unsigned64 prod = (((unsigned64)hi) << 32) + (unsigned64)lo;
|
|
unsigned64 result = 0;
|
|
if (pos - (size + 1) >= -1)
|
|
{
|
|
prod >>= (pos - size);
|
|
result = prod & (((unsigned64)1 << (size + 1)) - 1);
|
|
DSPCR &= (~DSPCR_EFI_SMASK);
|
|
if (op == 1) // EXTPDP
|
|
{
|
|
if (pos - (size + 1) >= 0)
|
|
{
|
|
DSPCR &= (~DSPCR_POS_SMASK);
|
|
DSPCR |= ((pos - (size + 1)) & DSPCR_POS_MASK) << DSPCR_POS_SHIFT;
|
|
}
|
|
else if (pos - (size + 1) == -1)
|
|
{
|
|
DSPCR |= DSPCR_POS_SMASK;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
DSPCR |= DSPCR_EFI;
|
|
Unpredictable ();
|
|
}
|
|
GPR[rt] = EXTEND32 (result);
|
|
}
|
|
|
|
011111,5.SIZE,5.RT,000,2.AC,00010,111000:SPECIAL3:32::EXTP
|
|
"extp r<RT>, ac<AC>, <SIZE>"
|
|
*dsp:
|
|
{
|
|
do_extp (SD_, RT, AC, SIZE, 0);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,00011,111000:SPECIAL3:32::EXTPV
|
|
"extpv r<RT>, ac<AC>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_extpv (SD_, RT, AC, RS, 0);
|
|
}
|
|
|
|
011111,5.SIZE,5.RT,000,2.AC,01010,111000:SPECIAL3:32::EXTPDP
|
|
"extpdp r<RT>, ac<AC>, <SIZE>"
|
|
*dsp:
|
|
{
|
|
do_extp (SD_, RT, AC, SIZE, 1);
|
|
}
|
|
|
|
011111,5.RS,5.RT,000,2.AC,01011,111000:SPECIAL3:32::EXTPDPV
|
|
"extpdpv r<RT>, ac<AC>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_extpv (SD_, RT, AC, RS, 1);
|
|
}
|
|
|
|
:function:::void:do_shilo:int ac, int shift
|
|
{
|
|
unsigned32 lo = DSPLO(ac);
|
|
unsigned32 hi = DSPHI(ac);
|
|
unsigned64 prod = (((unsigned64)hi) << 32) + (unsigned64)lo;
|
|
if (shift > 31)
|
|
shift = shift - 64;
|
|
if (shift >= 0)
|
|
prod >>= shift;
|
|
else
|
|
prod <<= (-shift);
|
|
DSPLO(ac) = EXTEND32 (prod);
|
|
DSPHI(ac) = EXTEND32 (prod >> 32);
|
|
}
|
|
|
|
011111,6.SHIFT6,0000,000,2.AC,11010,111000:SPECIAL3:32::SHILO
|
|
"shilo ac<AC>, <SHIFT6>"
|
|
*dsp:
|
|
{
|
|
do_shilo (SD_, AC, SHIFT6);
|
|
}
|
|
|
|
011111,5.RS,00000,000,2.AC,11011,111000:SPECIAL3:32::SHILOV
|
|
"shilov ac<AC>, r<RS>"
|
|
*dsp:
|
|
{
|
|
do_shilov (SD_, AC, RS);
|
|
}
|
|
|
|
011111,5.RS,00000,000,2.AC,11111,111000:SPECIAL3:32::MTHLIP
|
|
"mthlip r<RS>, ac<AC>"
|
|
*dsp:
|
|
{
|
|
do_mthlip (SD_, RS, AC);
|
|
}
|
|
|
|
011111,5.RS,10.MASK10,10011,111000:SPECIAL3:32::WRDSP
|
|
"wrdsp r<RS>":MASK10 == 1111111111
|
|
"wrdsp r<RS>, <MASK10>"
|
|
*dsp:
|
|
{
|
|
do_wrdsp (SD_, RS, MASK10);
|
|
}
|
|
|
|
011111,10.MASK10,5.RD,10010,111000:SPECIAL3:32::RDDSP
|
|
"rddsp r<RD>":MASK10 == 1111111111
|
|
"rddsp r<RD>, <MASK10>"
|
|
*dsp:
|
|
{
|
|
do_rddsp (SD_, RD, MASK10);
|
|
}
|
|
|
|
011111,5.BASE,5.INDEX,5.RD,00110,001010:SPECIAL3:32::LBUX
|
|
"lbux r<RD>, r<INDEX>(r<BASE>)"
|
|
*dsp:
|
|
{
|
|
do_lxx (SD_, RD, BASE, INDEX, 0);
|
|
}
|
|
|
|
011111,5.BASE,5.INDEX,5.RD,00100,001010:SPECIAL3:32::LHX
|
|
"lhx r<RD>, r<INDEX>(r<BASE>)"
|
|
*dsp:
|
|
{
|
|
do_lxx (SD_, RD, BASE, INDEX, 1);
|
|
}
|
|
|
|
011111,5.BASE,5.INDEX,5.RD,00000,001010:SPECIAL3:32::LWX
|
|
"lwx r<RD>, r<INDEX>(r<BASE>)"
|
|
*dsp:
|
|
{
|
|
do_lxx (SD_, RD, BASE, INDEX, 2);
|
|
}
|
|
|
|
000001,00000,11100,16.OFFSET:REGIMM:32::BPOSGE32
|
|
"bposge32 <OFFSET>"
|
|
*dsp:
|
|
{
|
|
unsigned32 pos = (DSPCR >> DSPCR_POS_SHIFT) & DSPCR_POS_MASK;
|
|
address_word offset = EXTEND16 (OFFSET) << 2;
|
|
if (pos >= 32)
|
|
{
|
|
DELAY_SLOT (NIA + offset);
|
|
}
|
|
}
|