Used to determine legal VLIW slots for each instruction Signed-off-by: Taylor Simpson <tsimp...@quicinc.com> --- target/hexagon/iclass.h | 46 +++++++++++++++++++++ target/hexagon/iclass.c | 107 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 153 insertions(+) create mode 100644 target/hexagon/iclass.h create mode 100644 target/hexagon/iclass.c
diff --git a/target/hexagon/iclass.h b/target/hexagon/iclass.h new file mode 100644 index 0000000..89288ac --- /dev/null +++ b/target/hexagon/iclass.h @@ -0,0 +1,46 @@ +/* + * Copyright(c) 2019-2020 Qualcomm Innovation Center, Inc. All Rights Reserved. + * + * 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 of the License, 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 this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef HEXAGON_ICLASS_H +#define HEXAGON_ICLASS_H + +#include "opcodes.h" + +#define ICLASS_FROM_TYPE(TYPE) ICLASS_##TYPE + +typedef enum { + +#define DEF_PP_ICLASS32(TYPE, SLOTS, UNITS) ICLASS_FROM_TYPE(TYPE), +#define DEF_EE_ICLASS32(TYPE, SLOTS, UNITS) /* nothing */ +#include "imported/iclass.def" +#undef DEF_PP_ICLASS32 +#undef DEF_EE_ICLASS32 + +#define DEF_EE_ICLASS32(TYPE, SLOTS, UNITS) ICLASS_FROM_TYPE(TYPE), +#define DEF_PP_ICLASS32(TYPE, SLOTS, UNITS) /* nothing */ +#include "imported/iclass.def" +#undef DEF_PP_ICLASS32 +#undef DEF_EE_ICLASS32 + + ICLASS_FROM_TYPE(COPROC_VX), + ICLASS_FROM_TYPE(COPROC_VMEM), + NUM_ICLASSES +} iclass_t; + +extern const char *find_iclass_slots(opcode_t opcode, int itype); + +#endif diff --git a/target/hexagon/iclass.c b/target/hexagon/iclass.c new file mode 100644 index 0000000..9ada8cd --- /dev/null +++ b/target/hexagon/iclass.c @@ -0,0 +1,107 @@ +/* + * Copyright(c) 2019-2020 Qualcomm Innovation Center, Inc. All Rights Reserved. + * + * 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 of the License, 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 this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "iclass.h" + +typedef struct { + const char * const slots; +} iclass_info_t; + +static const iclass_info_t iclass_info[] = { + +#define DEF_EE_ICLASS32(TYPE, SLOTS, UNITS) /* nothing */ +#define DEF_PP_ICLASS32(TYPE, SLOTS, UNITS) \ + [ICLASS_FROM_TYPE(TYPE)] = { .slots = #SLOTS }, + +#include "imported/iclass.def" +#undef DEF_PP_ICLASS32 +#undef DEF_EE_ICLASS32 + +#define DEF_PP_ICLASS32(TYPE, SLOTS, UNITS) /* nothing */ +#define DEF_EE_ICLASS32(TYPE, SLOTS, UNITS) \ + [ICLASS_FROM_TYPE(TYPE)] = { .slots = #SLOTS }, + +#include "imported/iclass.def" +#undef DEF_PP_ICLASS32 +#undef DEF_EE_ICLASS32 + + {0} +}; + +const char *find_iclass_slots(opcode_t opcode, int itype) +{ + /* There are some exceptions to what the iclass dictates */ + if (GET_ATTRIB(opcode, A_ICOP)) { + return "2"; + } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT0ONLY)) { + return "0"; + } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT1ONLY)) { + return "1"; + } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT2ONLY)) { + return "2"; + } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT3ONLY)) { + return "3"; + } else if (GET_ATTRIB(opcode, A_COF) && + GET_ATTRIB(opcode, A_INDIRECT) && + !GET_ATTRIB(opcode, A_MEMLIKE) && + !GET_ATTRIB(opcode, A_MEMLIKE_PACKET_RULES)) { + return "2"; + } else if (GET_ATTRIB(opcode, A_RESTRICT_NOSLOT1)) { + return "0"; + } else if ((opcode == J2_trap0) || (opcode == J2_trap1) || + (opcode == Y2_isync) || (opcode == J2_rte) || + (opcode == J2_pause) || (opcode == J4_hintjumpr)) { + return "2"; + } else if ((itype == ICLASS_V2LDST) && (GET_ATTRIB(opcode, A_STORE))) { + return "01"; + } else if ((itype == ICLASS_V2LDST) && (!GET_ATTRIB(opcode, A_STORE))) { + return "01"; + } else if (GET_ATTRIB(opcode, A_CRSLOT23)) { + return "23"; + } else if (GET_ATTRIB(opcode, A_RESTRICT_PREFERSLOT0)) { + return "0"; + } else if (GET_ATTRIB(opcode, A_SUBINSN)) { + return "01"; + } else if (GET_ATTRIB(opcode, A_CALL)) { + return "23"; + } else if ((opcode == J4_jumpseti) || (opcode == J4_jumpsetr)) { + return "23"; + } else if (GET_ATTRIB(opcode, A_EXTENSION) && GET_ATTRIB(opcode, A_CVI)) { + /* CVI EXTENSIONS */ + if (GET_ATTRIB(opcode, A_CVI_VM)) { + return "01"; + } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT2ONLY)) { + return "2"; + } else if (GET_ATTRIB(opcode, A_CVI_SLOT23)) { + return "23"; + } else if (GET_ATTRIB(opcode, A_CVI_VX)) { + return "23"; + } else if (GET_ATTRIB(opcode, A_CVI_VX_DV)) { + return "23"; + } else if (GET_ATTRIB(opcode, A_CVI_VS_VX)) { + return "23"; + } else if (GET_ATTRIB(opcode, A_MEMLIKE)) { + return "01"; + } else { + return "0123"; + } + } else { + return iclass_info[itype].slots; + } +} + -- 2.7.4
