binutils-gdb/sim/iq2000/cpu.h

/* CPU family header for iq2000bf.

THIS FILE IS MACHINE GENERATED WITH CGEN.

Copyright (C) 1996-2024 Free Software Foundation, Inc.

This file is part of the GNU simulators.

   This file 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 3, or (at your option)
   any later version.

   It 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, write to the Free Software Foundation, Inc.,
   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.

*/

#ifndef CPU_IQ2000BF_H
#define CPU_IQ2000BF_H

/* Maximum number of instructions that are fetched at a time.
   This is for LIW type instructions sets (e.g. m32r).  */
#define MAX_LIW_INSNS 1

/* Maximum number of instructions that can be executed in parallel.  */
#define MAX_PARALLEL_INSNS 1

/* The size of an "int" needed to hold an instruction word.
   This is usually 32 bits, but some architectures needs 64 bits.  */
typedef CGEN_INSN_INT CGEN_INSN_WORD;

#include "cgen-engine.h"

/* CPU state information.  */
typedef struct {
  /* Hardware elements.  */
  struct {
  /* program counter */
  USI h_pc;
#define GET_H_PC() get_h_pc (current_cpu)
#define SET_H_PC(x) \
do { \
set_h_pc (current_cpu, (x));\
;} while (0)
  /* General purpose registers */
  SI h_gr[32];
#define GET_H_GR(index) (((index) == (0))) ? (0) : (CPU (h_gr[index]))
#define SET_H_GR(index, x) \
do { \
if ((((index)) == (0))) {\
((void) 0); /*nop*/\
}\
 else {\
CPU (h_gr[(index)]) = (x);\
}\
;} while (0)
  } hardware;
#define CPU_CGEN_HW(cpu) (& IQ2000_SIM_CPU (cpu)->cpu_data.hardware)
} IQ2000BF_CPU_DATA;

/* Cover fns for register access.  */
USI iq2000bf_h_pc_get (SIM_CPU *);
void iq2000bf_h_pc_set (SIM_CPU *, USI);
SI iq2000bf_h_gr_get (SIM_CPU *, UINT);
void iq2000bf_h_gr_set (SIM_CPU *, UINT, SI);

/* These must be hand-written.  */
extern CPUREG_FETCH_FN iq2000bf_fetch_register;
extern CPUREG_STORE_FN iq2000bf_store_register;

typedef struct {
  int empty;
} MODEL_IQ2000_DATA;

/* Instruction argument buffer.  */

union sem_fields {
  struct { /* no operands */
    int empty;
  } sfmt_empty;
  struct { /*  */
    IADDR i_jmptarg;
  } sfmt_j;
  struct { /*  */
    IADDR i_offset;
    UINT f_rs;
    UINT f_rt;
  } sfmt_bbi;
  struct { /*  */
    UINT f_imm;
    UINT f_rs;
    UINT f_rt;
  } sfmt_addi;
  struct { /*  */
    UINT f_mask;
    UINT f_rd;
    UINT f_rs;
    UINT f_rt;
  } sfmt_mrgb;
  struct { /*  */
    UINT f_maskl;
    UINT f_rd;
    UINT f_rs;
    UINT f_rt;
    UINT f_shamt;
  } sfmt_ram;
#if WITH_SCACHE_PBB
  /* Writeback handler.  */
  struct {
    /* Pointer to argbuf entry for insn whose results need writing back.  */
    const struct argbuf *abuf;
  } write;
  /* x-before handler */
  struct {
    /*const SCACHE *insns[MAX_PARALLEL_INSNS];*/
    int first_p;
  } before;
  /* x-after handler */
  struct {
    int empty;
  } after;
  /* This entry is used to terminate each pbb.  */
  struct {
    /* Number of insns in pbb.  */
    int insn_count;
    /* Next pbb to execute.  */
    SCACHE *next;
    SCACHE *branch_target;
  } chain;
#endif
};

/* The ARGBUF struct.  */
struct argbuf {
  /* These are the baseclass definitions.  */
  IADDR addr;
  const IDESC *idesc;
  char trace_p;
  char profile_p;
  /* ??? Temporary hack for skip insns.  */
  char skip_count;
  char unused;
  /* cpu specific data follows */
  union sem semantic;
  int written;
  union sem_fields fields;
};

/* A cached insn.

   ??? SCACHE used to contain more than just argbuf.  We could delete the
   type entirely and always just use ARGBUF, but for future concerns and as
   a level of abstraction it is left in.  */

struct scache {
  struct argbuf argbuf;
};

/* Macros to simplify extraction, reading and semantic code.
   These define and assign the local vars that contain the insn's fields.  */

#define EXTRACT_IFMT_EMPTY_VARS \
  unsigned int length;
#define EXTRACT_IFMT_EMPTY_CODE \
  length = 0; \

#define EXTRACT_IFMT_ADD_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_shamt; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_ADD_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_shamt = EXTRACT_LSB0_UINT (insn, 32, 10, 5); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_ADDI_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_imm; \
  unsigned int length;
#define EXTRACT_IFMT_ADDI_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_imm = EXTRACT_LSB0_UINT (insn, 32, 15, 16); \

#define EXTRACT_IFMT_RAM_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_shamt; \
  UINT f_5; \
  UINT f_maskl; \
  unsigned int length;
#define EXTRACT_IFMT_RAM_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_shamt = EXTRACT_LSB0_UINT (insn, 32, 10, 5); \
  f_5 = EXTRACT_LSB0_UINT (insn, 32, 5, 1); \
  f_maskl = EXTRACT_LSB0_UINT (insn, 32, 4, 5); \

#define EXTRACT_IFMT_SLL_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_shamt; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_SLL_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_shamt = EXTRACT_LSB0_UINT (insn, 32, 10, 5); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_SLMV_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_shamt; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_SLMV_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_shamt = EXTRACT_LSB0_UINT (insn, 32, 10, 5); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_SLTI_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_imm; \
  unsigned int length;
#define EXTRACT_IFMT_SLTI_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_imm = EXTRACT_LSB0_UINT (insn, 32, 15, 16); \

#define EXTRACT_IFMT_BBI_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  SI f_offset; \
  unsigned int length;
#define EXTRACT_IFMT_BBI_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_offset = ((((EXTRACT_LSB0_SINT (insn, 32, 15, 16)) * (4))) + (((pc) + (4)))); \

#define EXTRACT_IFMT_BBV_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  SI f_offset; \
  unsigned int length;
#define EXTRACT_IFMT_BBV_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_offset = ((((EXTRACT_LSB0_SINT (insn, 32, 15, 16)) * (4))) + (((pc) + (4)))); \

#define EXTRACT_IFMT_BGEZ_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  SI f_offset; \
  unsigned int length;
#define EXTRACT_IFMT_BGEZ_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_offset = ((((EXTRACT_LSB0_SINT (insn, 32, 15, 16)) * (4))) + (((pc) + (4)))); \

#define EXTRACT_IFMT_JALR_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_shamt; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_JALR_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_shamt = EXTRACT_LSB0_UINT (insn, 32, 10, 5); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_JR_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_shamt; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_JR_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_shamt = EXTRACT_LSB0_UINT (insn, 32, 10, 5); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_LB_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_imm; \
  unsigned int length;
#define EXTRACT_IFMT_LB_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_imm = EXTRACT_LSB0_UINT (insn, 32, 15, 16); \

#define EXTRACT_IFMT_LUI_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_imm; \
  unsigned int length;
#define EXTRACT_IFMT_LUI_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_imm = EXTRACT_LSB0_UINT (insn, 32, 15, 16); \

#define EXTRACT_IFMT_BREAK_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_shamt; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_BREAK_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_shamt = EXTRACT_LSB0_UINT (insn, 32, 10, 5); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_SYSCALL_VARS \
  UINT f_opcode; \
  UINT f_excode; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_SYSCALL_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_excode = EXTRACT_LSB0_UINT (insn, 32, 25, 20); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_ANDOUI_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_imm; \
  unsigned int length;
#define EXTRACT_IFMT_ANDOUI_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_imm = EXTRACT_LSB0_UINT (insn, 32, 15, 16); \

#define EXTRACT_IFMT_MRGB_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_10; \
  UINT f_mask; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_MRGB_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_10 = EXTRACT_LSB0_UINT (insn, 32, 10, 1); \
  f_mask = EXTRACT_LSB0_UINT (insn, 32, 9, 4); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_BC0F_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  SI f_offset; \
  unsigned int length;
#define EXTRACT_IFMT_BC0F_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_offset = ((((EXTRACT_LSB0_SINT (insn, 32, 15, 16)) * (4))) + (((pc) + (4)))); \

#define EXTRACT_IFMT_CFC0_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_10_11; \
  unsigned int length;
#define EXTRACT_IFMT_CFC0_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_10_11 = EXTRACT_LSB0_UINT (insn, 32, 10, 11); \

#define EXTRACT_IFMT_CHKHDR_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_shamt; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_CHKHDR_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_shamt = EXTRACT_LSB0_UINT (insn, 32, 10, 5); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_LULCK_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_rd; \
  UINT f_shamt; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_LULCK_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_rd = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
  f_shamt = EXTRACT_LSB0_UINT (insn, 32, 10, 5); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_PKRLR1_VARS \
  UINT f_opcode; \
  UINT f_rs; \
  UINT f_rt; \
  UINT f_count; \
  UINT f_index; \
  unsigned int length;
#define EXTRACT_IFMT_PKRLR1_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rs = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
  f_rt = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
  f_count = EXTRACT_LSB0_UINT (insn, 32, 15, 7); \
  f_index = EXTRACT_LSB0_UINT (insn, 32, 8, 9); \

#define EXTRACT_IFMT_RFE_VARS \
  UINT f_opcode; \
  UINT f_25; \
  UINT f_24_19; \
  UINT f_func; \
  unsigned int length;
#define EXTRACT_IFMT_RFE_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_25 = EXTRACT_LSB0_UINT (insn, 32, 25, 1); \
  f_24_19 = EXTRACT_LSB0_UINT (insn, 32, 24, 19); \
  f_func = EXTRACT_LSB0_UINT (insn, 32, 5, 6); \

#define EXTRACT_IFMT_J_VARS \
  UINT f_opcode; \
  UINT f_rsrvd; \
  USI f_jtarg; \
  unsigned int length;
#define EXTRACT_IFMT_J_CODE \
  length = 4; \
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
  f_rsrvd = EXTRACT_LSB0_UINT (insn, 32, 25, 10); \
  f_jtarg = ((((pc) & (0xf0000000))) | (((EXTRACT_LSB0_UINT (insn, 32, 15, 16)) << (2)))); \

/* Collection of various things for the trace handler to use.  */

typedef struct trace_record {
  IADDR pc;
  /* FIXME:wip */
} TRACE_RECORD;

#endif /* CPU_IQ2000BF_H */