projects / deliverable / binutils-gdb.git / blame
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|---|---|---|
| 2d2733fc TS |
1 | // -*- C -*- |
| 2 | // | |
| 3 | // Simulator definition for the SmartMIPS extensions. | |
| 4 | // Copyright (C) 2005 Free Software Foundation, Inc. | |
| 5 | // Contributed by Nigel Stephens (nigel@mips.com) and | |
| 6 | // David Ung (davidu@mips.com) of MIPS Technologies. | |
| 7 | // | |
| 8 | // This file is part of GDB, the GNU debugger. | |
| 9 | // | |
| 10 | // This program is free software; you can redistribute it and/or modify | |
| 11 | // it under the terms of the GNU General Public License as published by | |
| 12 | // the Free Software Foundation; either version 2, or (at your option) | |
| 13 | // any later version. | |
| 14 | // | |
| 15 | // This program is distributed in the hope that it will be useful, | |
| 16 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | // GNU General Public License for more details. | |
| 19 | // | |
| 20 | // You should have received a copy of the GNU General Public License along | |
| 21 | // with this program; if not, write to the Free Software Foundation, Inc., | |
| 22 | // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
| 23 | ||
| 24 | 011100,5.BASE,5.INDEX,5.RD,00010,001000:SPECIAL:32::LWXS | |
| 25 | "lwxs r<RD>, <INDEX>(r<BASE>)" | |
| 26 | *smartmips: | |
| 27 | { | |
| 28 | GPR[RD] = EXTEND32 (do_load(SD_, AccessLength_WORD, GPR[BASE], GPR[INDEX]<<2)); | |
| 29 | } | |
| 30 | ||
| 31 | 011100,5.RS,5.RT,00000,10001,000001:SPECIAL:32::MADDP | |
| 32 | "maddp r<RS>, r<RT>" | |
| 33 | *smartmips: | |
| 34 | { | |
| 35 | unsigned64 res; | |
| 36 | unsigned64 rs, rt; | |
| 37 | int i; | |
| 38 | ||
| 39 | check_mult_hilo (SD_, HIHISTORY, LOHISTORY); | |
| 40 | TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]); | |
| 41 | ||
| 42 | res = 0; | |
| 43 | rs = GPR[RS]; | |
| 44 | rt = GPR[RT]; | |
| 45 | for (i = 0; i < 32; i++) | |
| 46 | { | |
| 47 | if (rs & 1) | |
| 48 | res ^= rt; | |
| 49 | rs >>= 1; | |
| 50 | rt <<= 1; | |
| 51 | } | |
| 52 | LO ^= EXTEND32 (VL4_8 (res)); | |
| 53 | HI ^= EXTEND32 (VH4_8 (res)); | |
| 54 | TRACE_ALU_RESULT2 (HI, LO); | |
| 55 | } | |
| 56 | ||
| 57 | ||
| 58 | 000000,0000000000,5.RD,00001,010010:SPECIAL:32::MFLHXU | |
| 59 | "mflhxu r<RD>" | |
| 60 | *smartmips: | |
| 61 | { | |
| 62 | check_mf_hilo (SD_, HIHISTORY, LOHISTORY); | |
| 63 | TRACE_ALU_INPUT3 (ACX,HI,LO); | |
| 64 | GPR[RD] = LO; | |
| 65 | LO = HI; | |
| 66 | HI = ACX; | |
| 67 | ACX = 0; | |
| 68 | TRACE_ALU_RESULT4 (ACX,HI,LO,GPR[RD]); | |
| 69 | } | |
| 70 | ||
| 71 | 000000,5.RS,000000000000001,010011:SPECIAL:32::MTLHX | |
| 72 | "mtlhx r<RS>" | |
| 73 | *smartmips: | |
| 74 | { | |
| 75 | check_mf_hilo (SD_, HIHISTORY, LOHISTORY); | |
| 76 | TRACE_ALU_INPUT3 (HI,LO,GPR[RS]); | |
| 77 | ACX = HI; | |
| 78 | HI = LO; | |
| 79 | LO = GPR[RS]; | |
| 80 | TRACE_ALU_RESULT4 (ACX,HI,LO,GPR[RS]); | |
| 81 | } | |
| 82 | ||
| 83 | 000000,5.RS,5.RT,00000,10001,011001:SPECIAL:32::MULTP | |
| 84 | "multp r<RS>, r<RT>" | |
| 85 | *smartmips: | |
| 86 | { | |
| 87 | unsigned64 res; | |
| 88 | unsigned64 rs, rt; | |
| 89 | int i; | |
| 90 | check_mult_hilo (SD_, HIHISTORY, LOHISTORY); | |
| 91 | TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]); | |
| 92 | ||
| 93 | res = 0; | |
| 94 | rs = GPR[RS]; | |
| 95 | rt = GPR[RT]; | |
| 96 | for (i = 0; i < 32; i++) | |
| 97 | { | |
| 98 | if (rs & 1) | |
| 99 | res ^= rt; | |
| 100 | rs >>= 1; | |
| 101 | rt <<= 1; | |
| 102 | } | |
| 103 | LO = EXTEND32 (VL4_8 (res)); | |
| 104 | HI = EXTEND32 (VH4_8 (res)); | |
| 105 | ACX = 0; | |
| 106 | TRACE_ALU_RESULT2 (HI, LO); | |
| 107 | } | |
| 108 | ||
| 109 | 011100,5.RS,5.RT,00000,10010,000001:SPECIAL:32::PPERM | |
| 110 | "pperm r<RS>, r<RT>" | |
| 111 | *smartmips: | |
| 112 | { | |
| 113 | int i; | |
| 114 | ACX = (ACX << 6) | MSEXTRACTED(HI,26,31); | |
| 115 | HI = EXTEND32 ((HI << 6) | MSEXTRACTED(LO,26,31)); | |
| 116 | LO = EXTEND32 (LO << 6); | |
| 117 | for (i = 0; i < 6; i++) { | |
| 118 | int sbit = 5*i; | |
| 119 | int ebit = sbit + 4; | |
| 120 | int tbit = EXTRACTED(GPR[RT],sbit,ebit); | |
| 121 | LO |= MSEXTRACTED(GPR[RS],tbit,tbit) << i; | |
| 122 | } | |
| 123 | } |