Declare bitfields within registers such as user status register (USR) Signed-off-by: Taylor Simpson <tsimp...@quicinc.com> --- target/hexagon/reg_fields.c | 28 +++++++++++ target/hexagon/reg_fields.h | 40 +++++++++++++++ target/hexagon/reg_fields_def.h | 109 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 177 insertions(+) create mode 100644 target/hexagon/reg_fields.c create mode 100644 target/hexagon/reg_fields.h create mode 100644 target/hexagon/reg_fields_def.h
diff --git a/target/hexagon/reg_fields.c b/target/hexagon/reg_fields.c new file mode 100644 index 0000000..983655e --- /dev/null +++ b/target/hexagon/reg_fields.c @@ -0,0 +1,28 @@ +/* + * Copyright (c) 2019 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 <string.h> +#include "reg_fields.h" + +reg_field_t reg_field_info[] = { +#define DEF_REG_FIELD(TAG, NAME, START, WIDTH, DESCRIPTION) \ + {NAME, START, WIDTH, DESCRIPTION}, +#include "reg_fields_def.h" + {NULL, 0, 0} +#undef DEF_REG_FIELD +}; + diff --git a/target/hexagon/reg_fields.h b/target/hexagon/reg_fields.h new file mode 100644 index 0000000..79857c5 --- /dev/null +++ b/target/hexagon/reg_fields.h @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2019 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 REGS_H +#define REGS_H + +#define NUM_GEN_REGS 32 + +typedef struct { + const char *name; + int offset; + int width; + const char *description; +} reg_field_t; + +extern reg_field_t reg_field_info[]; + +enum reg_fields_enum { +#define DEF_REG_FIELD(TAG, NAME, START, WIDTH, DESCRIPTION) \ + TAG, +#include "reg_fields_def.h" + NUM_REG_FIELDS +#undef DEF_REG_FIELD +}; + +#endif diff --git a/target/hexagon/reg_fields_def.h b/target/hexagon/reg_fields_def.h new file mode 100644 index 0000000..095a776 --- /dev/null +++ b/target/hexagon/reg_fields_def.h @@ -0,0 +1,109 @@ +/* + * Copyright (c) 2019 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/>. + */ + +/* + * For registers that have individual fields, explain them here + * DEF_REG_FIELD(tag, + * name, + * bit start offset, + * width, + * description + */ + +/* USR fields */ +DEF_REG_FIELD(USR_OVF, + "ovf", 0, 1, + "Sticky Saturation Overflow - " + "Set when saturation occurs while executing instruction that specifies " + "optional saturation, remains set until explicitly cleared by a USR=Rs " + "instruction.") +DEF_REG_FIELD(USR_FPINVF, + "fpinvf", 1, 1, + "Floating-point IEEE Invalid Sticky Flag.") +DEF_REG_FIELD(USR_FPDBZF, + "fpdbzf", 2, 1, + "Floating-point IEEE Divide-By-Zero Sticky Flag.") +DEF_REG_FIELD(USR_FPOVFF, + "fpovff", 3, 1, + "Floating-point IEEE Overflow Sticky Flag.") +DEF_REG_FIELD(USR_FPUNFF, + "fpunff", 4, 1, + "Floating-point IEEE Underflow Sticky Flag.") +DEF_REG_FIELD(USR_FPINPF, + "fpinpf", 5, 1, + "Floating-point IEEE Inexact Sticky Flag.") + +DEF_REG_FIELD(USR_LPCFG, + "lpcfg", 8, 2, + "Hardware Loop Configuration: " + "Number of loop iterations (0-3) remaining before pipeline predicate " + "should be set.") +DEF_REG_FIELD(USR_PKTCNT_U, + "pktcnt_u", 10, 1, + "Enable packet counting in User mode.") +DEF_REG_FIELD(USR_PKTCNT_G, + "pktcnt_g", 11, 1, + "Enable packet counting in Guest mode.") +DEF_REG_FIELD(USR_PKTCNT_M, + "pktcnt_m", 12, 1, + "Enable packet counting in Monitor mode.") +DEF_REG_FIELD(USR_HFD, + "hfd", 13, 2, + "Two bits that let the user control the amount of L1 hardware data cache " + "prefetching (up to 4 cache lines): " + "00: No prefetching, " + "01: Prefetch Loads with post-updating address mode when execution is " + "within a hardware loop, " + "10: Prefetch any hardware-detected striding Load when execution is within " + "a hardware loop, " + "11: Prefetch any hardware-detected striding Load.") +DEF_REG_FIELD(USR_HFI, + "hfi", 15, 2, + "Two bits that let the user control the amount of L1 instruction cache " + "prefetching. " + "00: No prefetching, " + "01: Allow prefetching of at most 1 additional cache line, " + "10: Allow prefetching of at most 2 additional cache lines.") + +DEF_REG_FIELD(USR_FPRND, + "fprnd", 22, 2, + "Rounding Mode for Floating-Point Instructions: " + "00: Round to nearest, ties to even (default), " + "01: Toward zero, " + "10: Downward (toward negative infinity), " + "11: Upward (toward positive infinity).") + +DEF_REG_FIELD(USR_FPINVE, + "fpinve", 25, 1, + "Enable trap on IEEE Invalid.") +DEF_REG_FIELD(USR_FPDBZE, + "fpdbze", 26, 1, "Enable trap on IEEE Divide-By-Zero.") +DEF_REG_FIELD(USR_FPOVFE, + "fpovfe", 27, 1, + "Enable trap on IEEE Overflow.") +DEF_REG_FIELD(USR_FPUNFE, + "fpunfe", 28, 1, + "Enable trap on IEEE Underflow.") +DEF_REG_FIELD(USR_FPINPE, + "fpinpe", 29, 1, + "Enable trap on IEEE Inexact.") +DEF_REG_FIELD(USR_PFA, + "pfa", 31, 1, + "L2 Prefetch Active: Set when non-blocking l2fetch instruction is " + "prefetching requested data, remains set until l2fetch prefetch operation " + "is completed (or not active).") /* read-only */ + -- 2.7.4
