| 1 | /* Main simulator entry points specific to the IQ2000. |
| 2 | Copyright (C) 2000-2015 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 | \f |
| 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 | \f |
| 159 | SIM_RC |
| 160 | sim_create_inferior (sd, abfd, argv, envp) |
| 161 | SIM_DESC sd; |
| 162 | struct bfd *abfd; |
| 163 | char **argv; |
| 164 | char **envp; |
| 165 | { |
| 166 | SIM_CPU *current_cpu = STATE_CPU (sd, 0); |
| 167 | SIM_ADDR addr; |
| 168 | |
| 169 | if (abfd != NULL) |
| 170 | addr = bfd_get_start_address (abfd); |
| 171 | else |
| 172 | addr = CPU2INSN(0); |
| 173 | sim_pc_set (current_cpu, addr); |
| 174 | |
| 175 | #if 0 |
| 176 | STATE_ARGV (sd) = sim_copy_argv (argv); |
| 177 | STATE_ENVP (sd) = sim_copy_argv (envp); |
| 178 | #endif |
| 179 | |
| 180 | return SIM_RC_OK; |
| 181 | } |