1 /* Main simulator entry points specific to the IQ2000. 2 Copyright (C) 2000-2024 Free Software Foundation, Inc. 3 Contributed by Cygnus Solutions. 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 3 of the License, or 10 (at your option) 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 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 /* This must come before any other includes. */ 21 #include "defs.h" 22 23 #include "sim-main.h" 24 25 #include <stdlib.h> 26 27 #include "sim/callback.h" 28 #include "sim-options.h" 29 #include "libiberty.h" 30 #include "bfd.h" 31 32 static void free_state (SIM_DESC); 33 34 /* Cover function for sim_cgen_disassemble_insn. */ 35 36 static void 37 iq2000bf_disassemble_insn (SIM_CPU *cpu, const CGEN_INSN *insn, 38 const ARGBUF *abuf, IADDR pc, char *buf) 39 { 40 sim_cgen_disassemble_insn(cpu, insn, abuf, pc, buf); 41 } 42 43 /* Cover function of sim_state_free to free the cpu buffers as well. */ 44 45 static void 46 free_state (SIM_DESC sd) 47 { 48 if (STATE_MODULES (sd) != NULL) 49 sim_module_uninstall (sd); 50 sim_cpu_free_all (sd); 51 sim_state_free (sd); 52 } 53 54 extern const SIM_MACH * const iq2000_sim_machs[]; 55 56 /* Create an instance of the simulator. */ 57 58 SIM_DESC 59 sim_open (SIM_OPEN_KIND kind, host_callback *callback, struct bfd *abfd, 60 char * const *argv) 61 { 62 int i; 63 SIM_DESC sd = sim_state_alloc (kind, callback); 64 65 /* Set default options before parsing user options. */ 66 STATE_MACHS (sd) = iq2000_sim_machs; 67 STATE_MODEL_NAME (sd) = "iq2000"; 68 current_alignment = STRICT_ALIGNMENT; 69 current_target_byte_order = BFD_ENDIAN_BIG; 70 71 /* The cpu data is kept in a separately allocated chunk of memory. */ 72 if (sim_cpu_alloc_all_extra (sd, 0, sizeof (struct iq2000_sim_cpu)) 73 != SIM_RC_OK) 74 { 75 free_state (sd); 76 return 0; 77 } 78 79 if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) 80 { 81 free_state (sd); 82 return 0; 83 } 84 85 /* The parser will print an error message for us, so we silently return. */ 86 if (sim_parse_args (sd, argv) != SIM_RC_OK) 87 { 88 free_state (sd); 89 return 0; 90 } 91 92 /* Allocate core managed memory. */ 93 sim_do_commandf (sd, "memory region 0x%x,0x%x", IQ2000_INSN_VALUE, IQ2000_INSN_MEM_SIZE); 94 sim_do_commandf (sd, "memory region 0x%x,0x%x", IQ2000_DATA_VALUE, IQ2000_DATA_MEM_SIZE); 95 96 /* check for/establish the reference program image */ 97 if (sim_analyze_program (sd, STATE_PROG_FILE (sd), abfd) != SIM_RC_OK) 98 { 99 free_state (sd); 100 return 0; 101 } 102 103 /* Establish any remaining configuration options. */ 104 if (sim_config (sd) != SIM_RC_OK) 105 { 106 free_state (sd); 107 return 0; 108 } 109 110 if (sim_post_argv_init (sd) != SIM_RC_OK) 111 { 112 free_state (sd); 113 return 0; 114 } 115 116 /* Open a copy of the cpu descriptor table. */ 117 { 118 CGEN_CPU_DESC cd = iq2000_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name, 119 CGEN_ENDIAN_BIG); 120 121 for (i = 0; i < MAX_NR_PROCESSORS; ++i) 122 { 123 SIM_CPU *cpu = STATE_CPU (sd, i); 124 CPU_CPU_DESC (cpu) = cd; 125 CPU_DISASSEMBLER (cpu) = iq2000bf_disassemble_insn; 126 } 127 iq2000_cgen_init_dis (cd); 128 } 129 130 return sd; 131 } 132 133 SIM_RC 134 sim_create_inferior (SIM_DESC sd, struct bfd *abfd, char * const *argv, 135 char * const *env) 136 { 137 SIM_CPU *current_cpu = STATE_CPU (sd, 0); 138 host_callback *cb = STATE_CALLBACK (sd); 139 bfd_vma addr; 140 141 if (abfd != NULL) 142 addr = bfd_get_start_address (abfd); 143 else 144 addr = CPU2INSN(0); 145 sim_pc_set (current_cpu, addr); 146 147 /* Standalone mode (i.e. `run`) will take care of the argv for us in 148 sim_open() -> sim_parse_args(). But in debug mode (i.e. 'target sim' 149 with `gdb`), we need to handle it because the user can change the 150 argv on the fly via gdb's 'run'. */ 151 if (STATE_PROG_ARGV (sd) != argv) 152 { 153 freeargv (STATE_PROG_ARGV (sd)); 154 STATE_PROG_ARGV (sd) = dupargv (argv); 155 } 156 157 if (STATE_PROG_ENVP (sd) != env) 158 { 159 freeargv (STATE_PROG_ENVP (sd)); 160 STATE_PROG_ENVP (sd) = dupargv (env); 161 } 162 163 cb->argv = STATE_PROG_ARGV (sd); 164 cb->envp = STATE_PROG_ENVP (sd); 165 166 return SIM_RC_OK; 167 } 168