1 /* Main simulator entry points specific to the IQ2000. 2 Copyright (C) 2000-2014 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 #include "sim-main.h" 21 #ifdef HAVE_STDLIB_H 22 #include <stdlib.h> 23 #endif 24 #include "sim-options.h" 25 #include "libiberty.h" 26 #include "bfd.h" 27 28 static void free_state (SIM_DESC); 29 30 /* Records simulator descriptor so utilities like iq2000_dump_regs can be 31 called from gdb. */ 32 SIM_DESC current_state; 33 34 /* Cover function for sim_cgen_disassemble_insn. */ 35 36 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 /* Create an instance of the simulator. */ 55 56 SIM_DESC 57 sim_open (kind, callback, abfd, argv) 58 SIM_OPEN_KIND kind; 59 host_callback *callback; 60 struct bfd *abfd; 61 char **argv; 62 { 63 char c; 64 int i; 65 SIM_DESC sd = sim_state_alloc (kind, callback); 66 67 /* The cpu data is kept in a separately allocated chunk of memory. */ 68 if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK) 69 { 70 free_state (sd); 71 return 0; 72 } 73 74 #if 0 /* FIXME: pc is in mach-specific struct */ 75 /* FIXME: watchpoints code shouldn't need this */ 76 { 77 SIM_CPU *current_cpu = STATE_CPU (sd, 0); 78 STATE_WATCHPOINTS (sd)->pc = &(PC); 79 STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC); 80 } 81 #endif 82 83 if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) 84 { 85 free_state (sd); 86 return 0; 87 } 88 89 #if 0 /* FIXME: 'twould be nice if we could do this */ 90 /* These options override any module options. 91 Obviously ambiguity should be avoided, however the caller may wish to 92 augment the meaning of an option. */ 93 if (extra_options != NULL) 94 sim_add_option_table (sd, extra_options); 95 #endif 96 97 /* getopt will print the error message so we just have to exit if this fails. 98 FIXME: Hmmm... in the case of gdb we need getopt to call 99 print_filtered. */ 100 if (sim_parse_args (sd, argv) != SIM_RC_OK) 101 { 102 free_state (sd); 103 return 0; 104 } 105 106 /* Allocate core managed memory. */ 107 sim_do_commandf (sd, "memory region 0x%lx,0x%lx", IQ2000_INSN_VALUE, IQ2000_INSN_MEM_SIZE); 108 sim_do_commandf (sd, "memory region 0x%lx,0x%lx", IQ2000_DATA_VALUE, IQ2000_DATA_MEM_SIZE); 109 110 /* check for/establish the reference program image */ 111 if (sim_analyze_program (sd, 112 (STATE_PROG_ARGV (sd) != NULL 113 ? *STATE_PROG_ARGV (sd) 114 : NULL), 115 abfd) != SIM_RC_OK) 116 { 117 free_state (sd); 118 return 0; 119 } 120 121 /* Establish any remaining configuration options. */ 122 if (sim_config (sd) != SIM_RC_OK) 123 { 124 free_state (sd); 125 return 0; 126 } 127 128 if (sim_post_argv_init (sd) != SIM_RC_OK) 129 { 130 free_state (sd); 131 return 0; 132 } 133 134 /* Open a copy of the cpu descriptor table. */ 135 { 136 CGEN_CPU_DESC cd = iq2000_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name, 137 CGEN_ENDIAN_BIG); 138 139 for (i = 0; i < MAX_NR_PROCESSORS; ++i) 140 { 141 SIM_CPU *cpu = STATE_CPU (sd, i); 142 CPU_CPU_DESC (cpu) = cd; 143 CPU_DISASSEMBLER (cpu) = iq2000bf_disassemble_insn; 144 } 145 iq2000_cgen_init_dis (cd); 146 } 147 148 /* Initialize various cgen things not done by common framework. 149 Must be done after iq2000_cgen_cpu_open. */ 150 cgen_init (sd); 151 152 /* Store in a global so things like sparc32_dump_regs can be invoked 153 from the gdb command line. */ 154 current_state = sd; 155 156 return sd; 157 } 158 159 void 160 sim_close (sd, quitting) 161 SIM_DESC sd; 162 int quitting; 163 { 164 iq2000_cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0))); 165 sim_module_uninstall (sd); 166 } 167 168 SIM_RC 169 sim_create_inferior (sd, abfd, argv, envp) 170 SIM_DESC sd; 171 struct bfd *abfd; 172 char **argv; 173 char **envp; 174 { 175 SIM_CPU *current_cpu = STATE_CPU (sd, 0); 176 SIM_ADDR addr; 177 178 if (abfd != NULL) 179 addr = bfd_get_start_address (abfd); 180 else 181 addr = CPU2INSN(0); 182 sim_pc_set (current_cpu, addr); 183 184 #if 0 185 STATE_ARGV (sd) = sim_copy_argv (argv); 186 STATE_ENVP (sd) = sim_copy_argv (envp); 187 #endif 188 189 return SIM_RC_OK; 190 } 191