[RFC PATCH v2 10/67] Hexagon instruction and packet types

[Taylor Simpson]

The insn_t and packet_t are the interface between instruction decoding and
TCG code generation

Signed-off-by: Taylor Simpson <address@hidden>
---
 target/hexagon/insn.h | 133 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 target/hexagon/insn.h

diff --git a/target/hexagon/insn.h b/target/hexagon/insn.h
new file mode 100644
index 0000000..a80bcb9
--- /dev/null
+++ b/target/hexagon/insn.h
@@ -0,0 +1,133 @@
+/*
+ *  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_INSN_H
+#define HEXAGON_INSN_H
+
+#include "cpu.h"
+#include "hex_arch_types.h"
+#include "translate.h"
+
+#define INSTRUCTIONS_MAX 7    /* 2 pairs + loopend */
+#define REG_OPERANDS_MAX 5
+#define IMMEDS_MAX 2
+
+struct Instruction;
+
+typedef void (*semantic_insn_t)(CPUHexagonState *env,
+                                DisasContext *ctx,
+                                struct Instruction *insn);
+
+struct Instruction {
+    semantic_insn_t generate;            /* pointer to genptr routine */
+    size1u_t regno[REG_OPERANDS_MAX];    /* reg operands including predicates 
*/
+    size2u_t opcode;
+
+    size4u_t iclass:6;
+    size4u_t slot:3;
+    size4u_t part1:1;        /*
+                              * cmp-jumps are split into two insns.
+                              * set for the compare and clear for the jump
+                              */
+    size4u_t extension_valid:1;   /* Has a constant extender attached */
+    size4u_t which_extended:1;    /* If has an extender, which immediate */
+    size4u_t is_dcop:1;      /* Is a dcacheop */
+    size4u_t is_dcfetch:1;   /* Has an A_DCFETCH attribute */
+    size4u_t is_load:1;      /* Has A_LOAD attribute */
+    size4u_t is_store:1;     /* Has A_STORE attribute */
+    size4u_t is_memop:1;     /* Has A_MEMOP attribute */
+    size4u_t is_dealloc:1;   /* Is a dealloc return or dealloc frame */
+    size4u_t is_aia:1;       /* Is a post increment */
+    size4u_t is_endloop:1;   /* This is an end of loop */
+    size4u_t is_2nd_jump:1;  /* This is the second jump of a dual-jump packet 
*/
+    size4u_t new_value_producer_slot:4;
+    size4s_t immed[IMMEDS_MAX];    /* immediate field */
+};
+
+typedef struct Instruction insn_t;
+
+struct Packet {
+    size2u_t num_insns;
+    size2u_t encod_pkt_size_in_bytes;
+
+    /* Pre-decodes about LD/ST */
+    size8u_t single_load:1;
+    size8u_t dual_load:1;
+    size8u_t single_store:1;
+    size8u_t dual_store:1;
+    size8u_t load_and_store:1;
+    size8u_t memop_or_nvstore:1;
+
+    /* Pre-decodes about COF */
+    size8u_t pkt_has_cof:1;          /* Has any change-of-flow */
+    size8u_t pkt_has_dual_jump:1;
+    size8u_t pkt_has_initloop:1;
+    size8u_t pkt_has_initloop0:1;
+    size8u_t pkt_has_initloop1:1;
+    size8u_t pkt_has_endloop:1;
+    size8u_t pkt_has_endloop0:1;
+    size8u_t pkt_has_endloop1:1;
+    size8u_t pkt_has_endloop01:1;
+    size8u_t pkt_has_call:1;
+    size8u_t pkt_has_jumpr:1;
+    size8u_t pkt_has_cjump:1;
+    size8u_t pkt_has_cjump_dotnew:1;
+    size8u_t pkt_has_cjump_dotold:1;
+    size8u_t pkt_has_cjump_newval:1;
+    size8u_t pkt_has_duplex:1;
+    size8u_t pkt_has_payload:1;      /* Contains a constant extender */
+    size8u_t pkt_has_dealloc_return:1;
+
+    /* Pre-decodes about SLOTS */
+    size8u_t slot0_valid:1;
+    size8u_t slot1_valid:1;
+    size8u_t slot2_valid:1;
+    size8u_t slot3_valid:1;
+
+    /* When a predicate cancels something, track that */
+    size8u_t pkt_has_fp_op:1;
+    size8u_t pkt_has_fpsp_op:1;
+    size8u_t pkt_has_fpdp_op:1;
+
+    /* Contains a cacheop */
+    size8u_t pkt_has_cacheop:1;
+    size8u_t pkt_has_dczeroa:1;
+    size8u_t pkt_has_ictagop:1;
+    size8u_t pkt_has_icflushop:1;
+    size8u_t pkt_has_dcflushop:1;
+    size8u_t pkt_has_dctagop:1;
+    size8u_t pkt_has_l2flushop:1;
+    size8u_t pkt_has_l2tagop:1;
+
+    /* load store for slots */
+    size8u_t pkt_has_load_s0:1;
+    size8u_t pkt_has_load_s1:1;
+    size8u_t pkt_has_store_s0:1;
+    size8u_t pkt_has_store_s1:1;
+
+    /* Misc */
+    size8u_t num_rops:4;            /* Num risc ops in the packet */
+    size8u_t pkt_access_count:2;    /* Is a vmem access going to VTCM */
+    size8u_t pkt_ldaccess_l2:2;     /* vmem ld access to l2 */
+    size8u_t pkt_ldaccess_vtcm:2;   /* vmem ld access to vtcm */
+
+    insn_t insn[INSTRUCTIONS_MAX];
+};
+
+typedef struct Packet packet_t;
+
+#endif
-- 
2.7.4