diff options
Diffstat (limited to 'sim/frv/sim-if.c')
| -rw-r--r-- | sim/frv/sim-if.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/sim/frv/sim-if.c b/sim/frv/sim-if.c new file mode 100644 index 0000000..f3ffbcc --- /dev/null +++ b/sim/frv/sim-if.c @@ -0,0 +1,251 @@ +/* Main simulator entry points specific to the FRV. + Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc. + Contributed by Red Hat. + +This file is part of the GNU simulators. + +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, 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, write to the Free Software Foundation, Inc., +59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#define WANT_CPU +#define WANT_CPU_FRVBF +#include "sim-main.h" +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#include "sim-options.h" +#include "libiberty.h" +#include "bfd.h" +#include "elf-bfd.h" + +static void free_state (SIM_DESC); +static void print_frv_misc_cpu (SIM_CPU *cpu, int verbose); + +/* Records simulator descriptor so utilities like frv_dump_regs can be + called from gdb. */ +SIM_DESC current_state; + +/* Cover function of sim_state_free to free the cpu buffers as well. */ + +static void +free_state (SIM_DESC sd) +{ + if (STATE_MODULES (sd) != NULL) + sim_module_uninstall (sd); + sim_cpu_free_all (sd); + sim_state_free (sd); +} + +/* Create an instance of the simulator. */ + +SIM_DESC +sim_open (kind, callback, abfd, argv) + SIM_OPEN_KIND kind; + host_callback *callback; + bfd *abfd; + char **argv; +{ + char c; + int i; + unsigned long elf_flags = 0; + SIM_DESC sd = sim_state_alloc (kind, callback); + + /* The cpu data is kept in a separately allocated chunk of memory. */ + if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + +#if 0 /* FIXME: pc is in mach-specific struct */ + /* FIXME: watchpoints code shouldn't need this */ + { + SIM_CPU *current_cpu = STATE_CPU (sd, 0); + STATE_WATCHPOINTS (sd)->pc = &(PC); + STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC); + } +#endif + + if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + /* These options override any module options. + Obviously ambiguity should be avoided, however the caller may wish to + augment the meaning of an option. */ + sim_add_option_table (sd, NULL, frv_options); + + /* getopt will print the error message so we just have to exit if this fails. + FIXME: Hmmm... in the case of gdb we need getopt to call + print_filtered. */ + if (sim_parse_args (sd, argv) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + +#if 0 + /* Allocate a handler for the control registers and other devices + if no memory for that range has been allocated by the user. + All are allocated in one chunk to keep things from being + unnecessarily complicated. */ + if (sim_core_read_buffer (sd, NULL, read_map, &c, FRV_DEVICE_ADDR, 1) == 0) + sim_core_attach (sd, NULL, + 0 /*level*/, + access_read_write, + 0 /*space ???*/, + FRV_DEVICE_ADDR, FRV_DEVICE_LEN /*nr_bytes*/, + 0 /*modulo*/, + &frv_devices, + NULL /*buffer*/); +#endif + + /* Allocate core managed memory if none specified by user. + Use address 4 here in case the user wanted address 0 unmapped. */ + if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0) + sim_do_commandf (sd, "memory region 0,0x%lx", FRV_DEFAULT_MEM_SIZE); + + /* check for/establish the reference program image */ + if (sim_analyze_program (sd, + (STATE_PROG_ARGV (sd) != NULL + ? *STATE_PROG_ARGV (sd) + : NULL), + abfd) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + /* set machine and architecture correctly instead of defaulting to frv */ + { + bfd *prog_bfd = STATE_PROG_BFD (sd); + if (prog_bfd != NULL) + { + struct elf_backend_data *backend_data; + + if (bfd_get_arch (prog_bfd) != bfd_arch_frv) + { + sim_io_eprintf (sd, "%s: \"%s\" is not a FRV object file\n", + STATE_MY_NAME (sd), + bfd_get_filename (prog_bfd)); + free_state (sd); + return 0; + } + + backend_data = get_elf_backend_data (prog_bfd); + + if (backend_data != NULL) + backend_data->elf_backend_object_p (prog_bfd); + + elf_flags = elf_elfheader (prog_bfd)->e_flags; + } + } + + /* Establish any remaining configuration options. */ + if (sim_config (sd) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + if (sim_post_argv_init (sd) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + /* Open a copy of the cpu descriptor table. */ + { + CGEN_CPU_DESC cd = frv_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name, + CGEN_ENDIAN_BIG); + for (i = 0; i < MAX_NR_PROCESSORS; ++i) + { + SIM_CPU *cpu = STATE_CPU (sd, i); + CPU_CPU_DESC (cpu) = cd; + CPU_DISASSEMBLER (cpu) = sim_cgen_disassemble_insn; + CPU_ELF_FLAGS (cpu) = elf_flags; + } + frv_cgen_init_dis (cd); + } + + /* Initialize various cgen things not done by common framework. + Must be done after frv_cgen_cpu_open. */ + cgen_init (sd); + + /* CPU specific initialization. */ + for (i = 0; i < MAX_NR_PROCESSORS; ++i) + { + SIM_CPU* cpu = STATE_CPU (sd, i); + frv_initialize (cpu, sd); + } + + /* Store in a global so things like sparc32_dump_regs can be invoked + from the gdb command line. */ + current_state = sd; + + return sd; +} + +void +sim_close (sd, quitting) + SIM_DESC sd; + int quitting; +{ + int i; + /* Terminate cache support. */ + for (i = 0; i < MAX_NR_PROCESSORS; ++i) + { + SIM_CPU* cpu = STATE_CPU (sd, i); + frv_cache_term (CPU_INSN_CACHE (cpu)); + frv_cache_term (CPU_DATA_CACHE (cpu)); + } + + frv_cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0))); + sim_module_uninstall (sd); +} + +SIM_RC +sim_create_inferior (sd, abfd, argv, envp) + SIM_DESC sd; + bfd *abfd; + char **argv; + char **envp; +{ + SIM_CPU *current_cpu = STATE_CPU (sd, 0); + SIM_ADDR addr; + + if (abfd != NULL) + addr = bfd_get_start_address (abfd); + else + addr = 0; + sim_pc_set (current_cpu, addr); + +#if 0 + STATE_ARGV (sd) = sim_copy_argv (argv); + STATE_ENVP (sd) = sim_copy_argv (envp); +#endif + + return SIM_RC_OK; +} + +void +sim_do_command (sd, cmd) + SIM_DESC sd; + char *cmd; +{ + if (sim_args_command (sd, cmd) != SIM_RC_OK) + sim_io_eprintf (sd, "Unknown command `%s'\n", cmd); +} |