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-rw-r--r--sim/i960/sim-if.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/sim/i960/sim-if.c b/sim/i960/sim-if.c
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--- a/sim/i960/sim-if.c
+++ /dev/null
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-/* Main simulator entry points for the i960.
- Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
- Contributed by Cygnus Support.
-
-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. */
-
-#include "libiberty.h"
-#include "bfd.h"
-#include "sim-main.h"
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#include "sim-options.h"
-#include "dis-asm.h"
-
-static void free_state (SIM_DESC);
-
-/* Since we don't build the cgen-opcode table, we use the old
- disassembler. */
-static CGEN_DISASSEMBLER i960_disassemble_insn;
-
-/* Records simulator descriptor so utilities like i960_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;
- struct bfd *abfd;
- char **argv;
-{
- char c;
- int i;
- 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;
- }
-
-#if 0 /* FIXME: 'twould be nice if we could do this */
- /* These options override any module options.
- Obviously ambiguity should be avoided, however the caller may wish to
- augment the meaning of an option. */
- if (extra_options != NULL)
- sim_add_option_table (sd, extra_options);
-#endif
-
- /* 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;
- }
-
- /* 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, I960_DEVICE_ADDR, 1) == 0)
- sim_core_attach (sd, NULL,
- 0 /*level*/,
- access_read_write,
- 0 /*space ???*/,
- I960_DEVICE_ADDR, I960_DEVICE_LEN /*nr_bytes*/,
- 0 /*modulo*/,
- &i960_devices,
- NULL /*buffer*/);
-
- /* 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)
- /* ??? wilson */
- sim_do_commandf (sd, "memory region 0x%lx,0x%lx", I960_DEFAULT_MEM_START,
- I960_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;
- }
-
- /* 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 = i960_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name,
- CGEN_ENDIAN_LITTLE);
- for (i = 0; i < MAX_NR_PROCESSORS; ++i)
- {
- SIM_CPU *cpu = STATE_CPU (sd, i);
- CPU_CPU_DESC (cpu) = cd;
- CPU_DISASSEMBLER (cpu) = i960_disassemble_insn;
- }
- }
-
- /* Initialize various cgen things not done by common framework.
- Must be done after i960_cgen_cpu_open. */
- cgen_init (sd);
-
- /* Store in a global so things like i960_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;
-{
- i960_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;
- struct 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;
-}
-
-#if 0
-int
-sim_stop (SIM_DESC sd)
-{
- switch (STATE_ARCHITECTURE (sd)->mach)
- {
- case bfd_mach_i960_ka_sa :
- return i960base_engine_stop (sd, NULL, NULL_CIA, sim_stopped, SIM_SIGINT);
- default :
- abort ();
- }
-}
-
-/* This isn't part of the official interface.
- This is just a good place to put this for now. */
-
-void
-sim_sync_stop (SIM_DESC sd, SIM_CPU *cpu, PCADDR pc, enum sim_stop reason, int sigrc)
-{
- switch (STATE_ARCHITECTURE (sd)->mach)
- {
- case bfd_mach_i960_ka_sa :
- (void) i960base_engine_stop (sd, cpu, pc, reason, sigrc);
- break;
- default :
- abort ();
- }
-}
-
-void
-sim_resume (sd, step, siggnal)
- SIM_DESC sd;
- int step, siggnal;
-{
- sim_module_resume (sd);
-
- switch (STATE_ARCHITECTURE (sd)->mach)
- {
- case bfd_mach_i960_ka_sa :
- i960base_engine_run (sd, step, siggnal);
- break;
- default :
- abort ();
- }
-
- sim_module_suspend (sd);
-}
-#endif
-
-/* The contents of BUF are in target byte order. */
-
-int
-sim_fetch_register (sd, rn, buf, length)
- SIM_DESC sd;
- int rn;
- unsigned char *buf;
- int length;
-{
- SIM_CPU *cpu = STATE_CPU (sd, 0);
-
- return (* CPU_REG_FETCH (cpu)) (cpu, rn, buf, length);
-}
-
-/* The contents of BUF are in target byte order. */
-
-int
-sim_store_register (sd, rn, buf, length)
- SIM_DESC sd;
- int rn;
- unsigned char *buf;
- int length;
-{
- SIM_CPU *cpu = STATE_CPU (sd, 0);
-
- return (* CPU_REG_STORE (cpu)) (cpu, rn, buf, length);
-}
-
-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);
-}
-
-/* Disassemble an instruction. */
-
-static void
-i960_disassemble_insn (SIM_CPU *cpu, const CGEN_INSN *insn,
- const ARGBUF *abuf, IADDR pc, char *buf)
-{
- struct disassemble_info disasm_info;
- SFILE sfile;
- SIM_DESC sd = CPU_STATE (cpu);
- int insn_length = CGEN_INSN_BITSIZE (insn) / 8;
-
- sfile.buffer = sfile.current = buf;
- INIT_DISASSEMBLE_INFO (disasm_info, (FILE *) &sfile,
- (fprintf_ftype) sim_disasm_sprintf);
- disasm_info.endian =
- (bfd_big_endian (STATE_PROG_BFD (sd)) ? BFD_ENDIAN_BIG
- : bfd_little_endian (STATE_PROG_BFD (sd)) ? BFD_ENDIAN_LITTLE
- : BFD_ENDIAN_UNKNOWN);
- disasm_info.read_memory_func = sim_disasm_read_memory;
- disasm_info.memory_error_func = sim_disasm_perror_memory;
- disasm_info.application_data = (PTR) cpu;
-
- print_insn_i960 (pc, &disasm_info);
-}
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