// -*- C -*- // Simulator definition for the MIPS DSP REV 2 ASE. // Copyright (C) 2006 MIPS Technologies, Inc. // All rights reserved. // Contributed by Chao-ying Fu (fu@mips.com). // // This file is part of GDB, the GNU debugger. // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2, or (at your option) // any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with GAS; see the file COPYING. If not, write to the Free // Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA // 02110-1301, USA. // op: 0 = ADD, 1 = SUB // sat: 0 = no saturation, 1 = saturation :function:::void:do_u_ph_op:int rd, int rs, int rt, int op, int sat { int i; unsigned32 h0; unsigned16 h1, h2; unsigned32 v1 = GPR[rs]; unsigned32 v2 = GPR[rt]; unsigned32 result = 0; for (i = 0; i < 32; i += 16, v1 >>= 16, v2 >>= 16) { h1 = (unsigned16)(v1 & 0xffff); h2 = (unsigned16)(v2 & 0xffff); if (op == 0) // ADD h0 = (unsigned32)h1 + (unsigned32)h2; else // SUB h0 = (unsigned32)h1 - (unsigned32)h2; if (op == 0 && (h0 > (unsigned32)0x0000ffff)) // ADD SAT { DSPCR |= DSPCR_OUFLAG4; if (sat == 1) h0 = 0xffff; } else if (op == 1 && h1 < h2) // SUB SAT { DSPCR |= DSPCR_OUFLAG4; if (sat == 1) h0 = 0x0; } result |= ((unsigned32)((unsigned16)h0) << i); } GPR[rd] = EXTEND32 (result); } // op: 0 = ADD, 1 = SUB // round: 0 = no rounding, 1 = rounding :function:::void:do_uh_qb_op:int rd, int rs, int rt, int op, int round { int i; unsigned32 h0; unsigned8 h1, h2; unsigned32 v1 = GPR[rs]; unsigned32 v2 = GPR[rt]; unsigned32 result = 0; for (i = 0; i < 32; i += 8, v1 >>= 8, v2 >>= 8) { h1 = (unsigned8)(v1 & 0xff); h2 = (unsigned8)(v2 & 0xff); if (op == 0) // ADD h0 = (unsigned32)h1 + (unsigned32)h2; else // SUB h0 = (unsigned32)h1 - (unsigned32)h2; if (round == 1) h0 = (h0 + 1) >> 1; else h0 = h0 >> 1; result |= ((unsigned32)((unsigned8)h0) << i); } GPR[rd] = EXTEND32 (result); } // op: 0 = EQ, 1 = LT, 2 = LE :function:::void:do_qb_cmpgdu: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; 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 { result |= ((h1 == h2) << j); DSPCR |= ((h1 == h2) << (DSPCR_CCOND_SHIFT + j)); } else if (op == 1) // LT { result |= ((h1 < h2) << j); DSPCR |= ((h1 < h2) << (DSPCR_CCOND_SHIFT + j)); } else // LE { result |= ((h1 <= h2) << j); DSPCR |= ((h1 <= h2) << (DSPCR_CCOND_SHIFT + j)); } } GPR[rd] = EXTEND32 (result); } // op: 0 = DPA 1 = DPS :function:::void:do_w_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); result = (signed32)h1 * (signed32)h2; if (op == 0) // DPA prod += (signed64)result; else // DPS prod -= (signed64)result; } DSPLO(ac) = EXTEND32 (prod); DSPHI(ac) = EXTEND32 (prod >> 32); } // round: 0 = no rounding, 1 = rounding :function:::void:do_w_mulq:int rd, int rs, int rt, int round { unsigned32 v1 = GPR[rs]; unsigned32 v2 = GPR[rt]; signed32 w1, w2; signed64 prod; unsigned32 result; w1 = (signed32) v1; w2 = (signed32 )v2; if (w1 == (signed32) 0x80000000 && w2 == (signed32) 0x80000000) { DSPCR |= DSPCR_OUFLAG5; prod = 0x7fffffff; } else { prod = ((signed64) w1 * (signed64) w2) << 1; if (round == 1) prod += 0x0000000080000000LL; prod = prod >> 32; } result = (unsigned32) prod; GPR[rd] = EXTEND32 (result); } // round: 0 = no rounding, 1 = rounding :function:::void:do_precr_sra:int rt, int rs, int sa, int round { unsigned32 v1 = GPR[rt]; unsigned32 v2 = GPR[rs]; signed32 w1 = (signed32) v1; signed32 w2 = (signed32) v2; signed32 result; if (sa != 0) { if (round == 1 && (w1 & (1 << (sa - 1)))) w1 = (w1 >> sa) + 1; else w1 = w1 >> sa; if (round == 1 && (w2 & (1 << (sa - 1)))) w2 = (w2 >> sa) + 1; else w2 = w2 >> sa; } result = (w1 << 16) | (w2 & 0xffff); GPR[rt] = EXTEND32 (result); } // round: 0 = no rounding, 1 = rounding :function:::void:do_qb_shra:int rd, int rt, int shift, int round { int i, j; signed8 q0; unsigned32 v1 = GPR[rt]; unsigned32 result = 0; for (i = 0; i < 32; i += 8, v1 >>= 8) { q0 = (signed8)(v1 & 0xff); if (shift != 0) { if (round == 1 && (q0 & (1 << (shift - 1)))) q0 = (q0 >> shift) + 1; else q0 = q0 >> shift; } result |= ((unsigned32)((unsigned8)q0) << i); } GPR[rd] = EXTEND32 (result); } :function:::void:do_ph_shrl:int rd, int rt, int shift { int i, j; unsigned16 h0; unsigned32 v1 = GPR[rt]; unsigned32 result = 0; for (i = 0; i < 32; i += 16, v1 >>= 16) { h0 = (unsigned16)(v1 & 0xffff); h0 = h0 >> shift; result |= ((unsigned32)h0 << i); } GPR[rd] = EXTEND32 (result); } // op: 0 = ADD, 1 = SUB // round: 0 = no rounding, 1 = rounding :function:::void:do_qh_ph_op:int rd, int rs, int rt, int op, int round { int i; signed32 h0; signed16 h1, h2; unsigned32 v1 = GPR[rs]; unsigned32 v2 = GPR[rt]; unsigned32 result = 0; for (i = 0; i < 32; i += 16, v1 >>= 16, v2 >>= 16) { h1 = (signed16)(v1 & 0xffff); h2 = (signed16)(v2 & 0xffff); if (op == 0) // ADD h0 = (signed32)h1 + (signed32)h2; else // SUB h0 = (signed32)h1 - (signed32)h2; if (round == 1) h0 = (h0 + 1) >> 1; else h0 = h0 >> 1; result |= ((unsigned32)((unsigned16)h0) << i); } GPR[rd] = EXTEND32 (result); } // op: 0 = ADD, 1 = SUB // round: 0 = no rounding, 1 = rounding :function:::void:do_qh_w_op:int rd, int rs, int rt, int op, int round { int i; signed64 v0; signed32 v1 = (signed32)GPR[rs]; signed32 v2 = (signed32)GPR[rt]; if (op == 0) // ADD v0 = (signed64)v1 + (signed64)v2; else // SUB v0 = (signed64)v1 - (signed64)v2; if (round == 1) v0 = (v0 + 1) >> 1; else v0 = v0 >> 1; GPR[rd] = EXTEND32 (v0); } // op: 0 = DPAX, 1 = DPSX :function:::void:do_x_w_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 & 0xffff0000) >> 16); result = (signed32)h1 * (signed32)h2; if (op == 0) // DPAX prod += (signed64)result; else // DPSX prod -= (signed64)result; } DSPLO(ac) = EXTEND32 (prod); DSPHI(ac) = EXTEND32 (prod >> 32); } // op: 0 = DPAQX, 1 = DPSQX // sat: 0 = no saturation, 1 = saturation of the accumulator :function:::void:do_qx_w_ph_dot_product:int ac, int rs, int rt, int op, int sat { 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); signed64 max, min; for (i = 0; i < 32; i += 16, v1 >>= 16, v2 <<= 16) { h1 = (signed16)(v1 & 0xffff); h2 = (signed16)((v2 & 0xffff0000) >> 16); if (h1 == (signed16)0x8000 && h2 == (signed16)0x8000) { DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac)); result = 0x7fffffff; } else result = ((signed32)h1 * (signed32)h2) << 1; if (op == 0) // DPAQX prod += (signed64)result; else // DPSQX prod -= (signed64)result; } // Saturation on the accumulator. if (sat == 1) { max = (signed64) 0x7fffffffLL; min = (signed64) 0xffffffff80000000LL; if (prod > max) { DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac)); prod = max; } else if (prod < min) { DSPCR |= (1 << (DSPCR_OUFLAG_SHIFT + ac)); prod = min; } } DSPLO(ac) = EXTEND32 (prod); DSPHI(ac) = EXTEND32 (prod >> 32); } 011111,00000,5.RT,5.RD,00001,010010:SPECIAL3:32::ABSQ_S.QB "absq_s.qb r, r" *dsp2: { int i; signed8 q0; unsigned32 v1 = GPR[RT]; unsigned32 result = 0; for (i = 0; i < 32; i += 8, v1 >>= 8) { q0 = (signed8)(v1 & 0xff); if (q0 == (signed8)0x80) { DSPCR |= DSPCR_OUFLAG4; q0 = 0x7f; } else if (q0 & 0x80) q0 = -q0; result |= ((unsigned32)((unsigned8)q0) << i); } GPR[RD] = EXTEND32 (result); } 011111,5.RS,5.RT,5.RD,01000,010000:SPECIAL3:32::ADDU.PH "addu.ph r, r, r" *dsp2: { do_u_ph_op (SD_, RD, RS, RT, 0, 0); } 011111,5.RS,5.RT,5.RD,01100,010000:SPECIAL3:32::ADDU_S.PH "addu_s.ph r, r, r" *dsp2: { do_u_ph_op (SD_, RD, RS, RT, 0, 1); } 011111,5.RS,5.RT,5.RD,00000,011000:SPECIAL3:32::ADDUH.QB "adduh.qb r, r, r" *dsp2: { do_uh_qb_op (SD_, RD, RS, RT, 0, 0); } 011111,5.RS,5.RT,5.RD,00010,011000:SPECIAL3:32::ADDUH_R.QB "adduh_r.qb r, r, r" *dsp2: { do_uh_qb_op (SD_, RD, RS, RT, 0, 1); } 011111,5.RS,5.RT,5.SA,00000,110001:SPECIAL3:32::APPEND "append r, r, " *dsp2: { unsigned32 v0 = GPR[RS]; unsigned32 v1 = GPR[RT]; unsigned32 result; unsigned32 mask = (1 << SA) - 1; result = (v1 << SA) | (v0 & mask); GPR[RT] = EXTEND32 (result); } 011111,5.RS,5.RT,000,2.BP,10000,110001:SPECIAL3:32::BALIGN "balign r, r, " *dsp2: { 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); } 011111,5.RS,5.RT,5.RD,11000,010001:SPECIAL3:32::CMPGDU.EQ.QB "cmpgdu.eq.qb r, r, r" *dsp2: { do_qb_cmpgdu (SD_, RD, RS, RT, 0); } 011111,5.RS,5.RT,5.RD,11001,010001:SPECIAL3:32::CMPGDU.LT.QB "cmpgdu.lt.qb r, r, r" *dsp2: { do_qb_cmpgdu (SD_, RD, RS, RT, 1); } 011111,5.RS,5.RT,5.RD,11010,010001:SPECIAL3:32::CMPGDU.LE.QB "cmpgdu.le.qb r, r, r" *dsp2: { do_qb_cmpgdu (SD_, RD, RS, RT, 2); } 011111,5.RS,5.RT,000,2.AC,00000,110000:SPECIAL3:32::DPA.W.PH "dpa.w.ph ac, r, r" *dsp2: { do_w_ph_dot_product (SD_, AC, RS, RT, 0); } 011111,5.RS,5.RT,000,2.AC,00001,110000:SPECIAL3:32::DPS.W.PH "dps.w.ph ac, r, r" *dsp2: { do_w_ph_dot_product (SD_, AC, RS, RT, 1); } 011111,5.RS,5.RT,5.RD,01100,011000:SPECIAL3:32::MUL.PH "mul.ph r, r, r" *dsp2: { do_ph_op (SD_, RD, RS, RT, 2, 0); } 011111,5.RS,5.RT,5.RD,01110,011000:SPECIAL3:32::MUL_S.PH "mul_s.ph r, r, r" *dsp2: { do_ph_op (SD_, RD, RS, RT, 2, 1); } 011111,5.RS,5.RT,5.RD,10111,011000:SPECIAL3:32::MULQ_RS.W "mulq_rs.w r, r, r" *dsp2: { do_w_mulq (SD_, RD, RS, RT, 1); } 011111,5.RS,5.RT,5.RD,11110,010000:SPECIAL3:32::MULQ_S.PH "mulq_s.ph r, r, r" *dsp2: { do_ph_mulq (SD_, RD, RS, RT, 0); } 011111,5.RS,5.RT,5.RD,10110,011000:SPECIAL3:32::MULQ_S.W "mulq_s.w r, r, r" *dsp2: { do_w_mulq (SD_, RD, RS, RT, 0); } 011111,5.RS,5.RT,000,2.AC,00010,110000:SPECIAL3:32::MULSA.W.PH "mulsa.w.ph ac, r, r" *dsp2: { 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); } 011111,5.RS,5.RT,5.RD,01101,010001:SPECIAL3:32::PRECR.QB.PH "precr.qb.ph r, r, r" *dsp2: { 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); } 011111,5.RS,5.RT,5.SA,11110,010001:SPECIAL3:32::PRECR_SRA.PH.W "precr_sra.ph.w r, r, " *dsp2: { do_precr_sra (SD_, RT, RS, SA, 0); } 011111,5.RS,5.RT,5.SA,11111,010001:SPECIAL3:32::PRECR_SRA_R.PH.W "precr_sra_r.ph.w r, r, " *dsp2: { do_precr_sra (SD_, RT, RS, SA, 1); } 011111,5.RS,5.RT,5.SA,00001,110001:SPECIAL3:32::PREPEND "prepend r, r, " *dsp2: { 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); } 011111,00,3.SHIFT3,5.RT,5.RD,00100,010011:SPECIAL3:32::SHRA.QB "shra.qb r, r, " *dsp2: { do_qb_shra (SD_, RD, RT, SHIFT3, 0); } 011111,00,3.SHIFT3,5.RT,5.RD,00101,010011:SPECIAL3:32::SHRA_R.QB "shra_r.qb r, r, " *dsp2: { do_qb_shra (SD_, RD, RT, SHIFT3, 1); } 011111,5.RS,5.RT,5.RD,00110,010011:SPECIAL3:32::SHRAV.QB "shrav.qb r, r, r" *dsp2: { unsigned32 shift = GPR[RS] & 0x7; do_qb_shra (SD_, RD, RT, shift, 0); } 011111,5.RS,5.RT,5.RD,00111,010011:SPECIAL3:32::SHRAV_R.QB "shrav_r.qb r, r, r" *dsp2: { unsigned32 shift = GPR[RS] & 0x7; do_qb_shra (SD_, RD, RT, shift, 1); } 011111,0,4.SHIFT4,5.RT,5.RD,11001,010011:SPECIAL3:32::SHRL.PH "shrl.ph r, r, " *dsp2: { do_ph_shrl (SD_, RD, RT, SHIFT4); } 011111,5.RS,5.RT,5.RD,11011,010011:SPECIAL3:32::SHRLV.PH "shrlv.ph r, r, r" *dsp2: { unsigned32 shift = GPR[RS] & 0xf; do_ph_shrl (SD_, RD, RT, shift); } 011111,5.RS,5.RT,5.RD,01001,010000:SPECIAL3:32::SUBU.PH "subu.ph r, r, r" *dsp2: { do_u_ph_op (SD_, RD, RS, RT, 1, 0); } 011111,5.RS,5.RT,5.RD,01101,010000:SPECIAL3:32::SUBU_S.PH "subu_s.ph r, r, r" *dsp2: { do_u_ph_op (SD_, RD, RS, RT, 1, 1); } 011111,5.RS,5.RT,5.RD,00001,011000:SPECIAL3:32::SUBUH.QB "subuh.qb r, r, r" *dsp2: { do_uh_qb_op (SD_, RD, RS, RT, 1, 0); } 011111,5.RS,5.RT,5.RD,00011,011000:SPECIAL3:32::SUBUH_R.QB "subuh_r.qb r, r, r" *dsp2: { do_uh_qb_op (SD_, RD, RS, RT, 1, 1); } 011111,5.RS,5.RT,5.RD,01000,011000:SPECIAL3:32::ADDQH.PH "addqh.ph r, r, r" *dsp2: { do_qh_ph_op (SD_, RD, RS, RT, 0, 0); } 011111,5.RS,5.RT,5.RD,01010,011000:SPECIAL3:32::ADDQH_R.PH "addqh_r.ph r, r, r" *dsp2: { do_qh_ph_op (SD_, RD, RS, RT, 0, 1); } 011111,5.RS,5.RT,5.RD,10000,011000:SPECIAL3:32::ADDQH.W "addqh.w r, r, r" *dsp2: { do_qh_w_op (SD_, RD, RS, RT, 0, 0); } 011111,5.RS,5.RT,5.RD,10010,011000:SPECIAL3:32::ADDQH_R.W "addqh_r.w r, r, r" *dsp2: { do_qh_w_op (SD_, RD, RS, RT, 0, 1); } 011111,5.RS,5.RT,5.RD,01001,011000:SPECIAL3:32::SUBQH.PH "subqh.ph r, r, r" *dsp2: { do_qh_ph_op (SD_, RD, RS, RT, 1, 0); } 011111,5.RS,5.RT,5.RD,01011,011000:SPECIAL3:32::SUBQH_R.PH "subqh_r.ph r, r, r" *dsp2: { do_qh_ph_op (SD_, RD, RS, RT, 1, 1); } 011111,5.RS,5.RT,5.RD,10001,011000:SPECIAL3:32::SUBQH.W "subqh.w r, r, r" *dsp2: { do_qh_w_op (SD_, RD, RS, RT, 1, 0); } 011111,5.RS,5.RT,5.RD,10011,011000:SPECIAL3:32::SUBQH_R.W "subqh_r.w r, r, r" *dsp2: { do_qh_w_op (SD_, RD, RS, RT, 1, 1); } 011111,5.RS,5.RT,000,2.AC,01000,110000:SPECIAL3:32::DPAX.W.PH "dpax.w.ph ac, r, r" *dsp2: { do_x_w_ph_dot_product (SD_, AC, RS, RT, 0); } 011111,5.RS,5.RT,000,2.AC,01001,110000:SPECIAL3:32::DPSX.W.PH "dpsx.w.ph ac, r, r" *dsp2: { do_x_w_ph_dot_product (SD_, AC, RS, RT, 1); } 011111,5.RS,5.RT,000,2.AC,11000,110000:SPECIAL3:32::DPAQX_S.W.PH "dpaqx_s.w.ph ac, r, r" *dsp2: { do_qx_w_ph_dot_product (SD_, AC, RS, RT, 0, 0); } 011111,5.RS,5.RT,000,2.AC,11010,110000:SPECIAL3:32::DPAQX_SA.W.PH "dpaqx_sa.w.ph ac, r, r" *dsp2: { do_qx_w_ph_dot_product (SD_, AC, RS, RT, 0, 1); } 011111,5.RS,5.RT,000,2.AC,11001,110000:SPECIAL3:32::DPSQX_S.W.PH "dpsqx_s.w.ph ac, r, r" *dsp2: { do_qx_w_ph_dot_product (SD_, AC, RS, RT, 1, 0); } 011111,5.RS,5.RT,000,2.AC,11011,110000:SPECIAL3:32::DPSQX_SA.W.PH "dpsqx_sa.w.ph ac, r, r" *dsp2: { do_qx_w_ph_dot_product (SD_, AC, RS, RT, 1, 1); }