projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| b34f6357 | 1 | /* frv vliw model. |
| 6aba47ca | 2 | Copyright (C) 1999, 2000, 2001, 2003, 2007 Free Software Foundation, Inc. |
| b34f6357 DB |
3 | Contributed by Red Hat. |
| 4 | ||
| 5 | This file is part of the GNU simulators. | |
| 6 | ||
| 7 | This program is free software; you can redistribute it and/or modify | |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 2, or (at your option) | |
| 10 | any later version. | |
| 11 | ||
| 12 | This program is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License along | |
| 18 | with this program; if not, write to the Free Software Foundation, Inc., | |
| 19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
| 20 | ||
| 21 | #define WANT_CPU frvbf | |
| 22 | #define WANT_CPU_FRVBF | |
| 23 | ||
| 24 | #include "sim-main.h" | |
| 25 | ||
| 26 | /* Simulator specific vliw related functions. Additional vliw related | |
| 27 | code used by both the simulator and the assembler is in frv.opc. */ | |
| 28 | ||
| 29 | int insns_in_slot[UNIT_NUM_UNITS] = {0}; | |
| 30 | ||
| 31 | void | |
| 32 | frv_vliw_setup_insn (SIM_CPU *current_cpu, const CGEN_INSN *insn) | |
| 33 | { | |
| 34 | FRV_VLIW *vliw; | |
| 35 | int index; | |
| 36 | ||
| 37 | /* Always clear the NE index which indicates the target register | |
| 38 | of a non excepting insn. This will be reset by the insn if | |
| 39 | necessary. */ | |
| 40 | frv_interrupt_state.ne_index = NE_NOFLAG; | |
| 41 | ||
| 42 | vliw = CPU_VLIW (current_cpu); | |
| 43 | index = vliw->next_slot - 1; | |
| 44 | if (frv_is_float_insn (insn)) | |
| 45 | { | |
| 46 | /* If the insn is to be added and is a floating point insn and | |
| 47 | it is the first floating point insn in the vliw, then clear | |
| 48 | FSR0.FTT. */ | |
| 49 | int i; | |
| 50 | for (i = 0; i < index; ++i) | |
| 51 | if (frv_is_float_major (vliw->major[i], vliw->mach)) | |
| 52 | break; /* found float insn. */ | |
| 53 | if (i >= index) | |
| 54 | { | |
| 55 | SI fsr0 = GET_FSR (0); | |
| 56 | SET_FSR_FTT (fsr0, FTT_NONE); | |
| 57 | SET_FSR (0, fsr0); | |
| 58 | } | |
| 59 | } | |
| 60 | else if (frv_is_media_insn (insn)) | |
| 61 | { | |
| 62 | /* Clear the appropriate MSR fields depending on which slot | |
| 63 | this insn is in. */ | |
| 79e59fe6 | 64 | CGEN_ATTR_VALUE_ENUM_TYPE preserve_ovf; |
| b34f6357 DB |
65 | SI msr0 = GET_MSR (0); |
| 66 | ||
| 67 | preserve_ovf = CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_PRESERVE_OVF); | |
| 68 | if ((*vliw->current_vliw)[index] == UNIT_FM0) | |
| 69 | { | |
| 70 | if (! preserve_ovf) | |
| 71 | { | |
| 72 | /* Clear MSR0.OVF and MSR0.SIE. */ | |
| 73 | CLEAR_MSR_SIE (msr0); | |
| 74 | CLEAR_MSR_OVF (msr0); | |
| 75 | } | |
| 76 | } | |
| 77 | else | |
| 78 | { | |
| 79 | if (! preserve_ovf) | |
| 80 | { | |
| 81 | /* Clear MSR1.OVF and MSR1.SIE. */ | |
| 82 | SI msr1 = GET_MSR (1); | |
| 83 | CLEAR_MSR_SIE (msr1); | |
| 84 | CLEAR_MSR_OVF (msr1); | |
| 85 | SET_MSR (1, msr1); | |
| 86 | } | |
| 87 | } | |
| 88 | SET_MSR (0, msr0); | |
| 89 | } /* Insn is a media insns. */ | |
| 90 | COUNT_INSNS_IN_SLOT ((*vliw->current_vliw)[index]); | |
| 91 | } | |
| 92 |