| /* gdb->simulator interface. |
| Copyright (C) 1992, 1993, 1994, 1997 Free Software Foundation, Inc. |
| |
| This file is part of Z8KSIM |
| |
| Z8KSIM 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. |
| |
| Z8KSIM 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 Z8KZIM; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "ansidecl.h" |
| #include "sim.h" |
| #include "tm.h" |
| #include "signal.h" |
| #include "bfd.h" |
| #include "callback.h" |
| #include "remote-sim.h" |
| |
| #ifndef NULL |
| #define NULL 0 |
| #endif |
| |
| host_callback *z8k_callback; |
| |
| static SIM_OPEN_KIND sim_kind; |
| static char *myname; |
| |
| void |
| sim_size (n) |
| int n; |
| { |
| /* Size is fixed. */ |
| } |
| |
| int |
| sim_store_register (sd, regno, value, length) |
| SIM_DESC sd; |
| int regno; |
| unsigned char *value; |
| int length; |
| { |
| /* FIXME: Review the computation of regval. */ |
| int regval = (value[0] << 24) | (value[1] << 16) | (value[2] << 8) | value[3]; |
| |
| tm_store_register (regno, regval); |
| return -1; |
| } |
| |
| int |
| sim_fetch_register (sd, regno, buf, length) |
| SIM_DESC sd; |
| int regno; |
| unsigned char *buf; |
| int length; |
| { |
| tm_fetch_register (regno, buf); |
| return -1; |
| } |
| |
| int |
| sim_write (sd, where, what, howmuch) |
| SIM_DESC sd; |
| SIM_ADDR where; |
| unsigned char *what; |
| int howmuch; |
| { |
| int i; |
| |
| for (i = 0; i < howmuch; i++) |
| tm_write_byte (where + i, what[i]); |
| return howmuch; |
| } |
| |
| int |
| sim_read (sd, where, what, howmuch) |
| SIM_DESC sd; |
| SIM_ADDR where; |
| unsigned char *what; |
| int howmuch; |
| { |
| int i; |
| |
| for (i = 0; i < howmuch; i++) |
| what[i] = tm_read_byte (where + i); |
| return howmuch; |
| } |
| |
| static void |
| control_c (sig, code, scp, addr) |
| int sig; |
| int code; |
| char *scp; |
| char *addr; |
| { |
| tm_exception (SIM_INTERRUPT); |
| } |
| |
| int |
| sim_stop (sd) |
| SIM_DESC sd; |
| { |
| tm_exception (SIM_INTERRUPT); |
| return 1; |
| } |
| |
| void |
| sim_resume (sd, step, sig) |
| SIM_DESC sd; |
| int step; |
| int sig; |
| { |
| void (*prev) (); |
| |
| prev = signal (SIGINT, control_c); |
| tm_resume (step); |
| signal (SIGINT, prev); |
| } |
| |
| void |
| sim_stop_reason (sd, reason, sigrc) |
| SIM_DESC sd; |
| enum sim_stop *reason; |
| int *sigrc; |
| { |
| switch (tm_signal ()) |
| { |
| case SIM_DIV_ZERO: |
| *sigrc = SIGFPE; |
| break; |
| case SIM_INTERRUPT: |
| *sigrc = SIGINT; |
| break; |
| case SIM_BAD_INST: |
| *sigrc = SIGILL; |
| break; |
| case SIM_BREAKPOINT: |
| *sigrc = SIGTRAP; |
| break; |
| case SIM_SINGLE_STEP: |
| *sigrc = SIGTRAP; |
| break; |
| case SIM_BAD_SYSCALL: |
| *sigrc = SIGILL; |
| break; |
| case SIM_BAD_ALIGN: |
| *sigrc = SIGSEGV; |
| break; |
| case SIM_DONE: |
| { |
| sim_state_type x; |
| tm_state (&x); |
| *sigrc = x.regs[2].word & 255; |
| *reason = sim_exited; |
| return; |
| } |
| default: |
| abort (); |
| } |
| *reason = sim_stopped; |
| } |
| |
| void |
| sim_info (sd, verbose) |
| SIM_DESC sd; |
| int verbose; |
| { |
| sim_state_type x; |
| |
| tm_state (&x); |
| tm_info_print (&x); |
| } |
| |
| SIM_DESC |
| sim_open (kind, cb, abfd, argv) |
| SIM_OPEN_KIND kind; |
| host_callback *cb; |
| struct _bfd *abfd; |
| char **argv; |
| { |
| /* FIXME: The code in sim_load that determines the exact z8k arch |
| should be moved to here */ |
| |
| sim_kind = kind; |
| myname = argv[0]; |
| z8k_callback = cb; |
| |
| /* fudge our descriptor for now */ |
| return (SIM_DESC) 1; |
| } |
| |
| void |
| sim_close (sd, quitting) |
| SIM_DESC sd; |
| int quitting; |
| { |
| /* nothing to do */ |
| } |
| |
| SIM_RC |
| sim_load (sd, prog, abfd, from_tty) |
| SIM_DESC sd; |
| char *prog; |
| bfd *abfd; |
| int from_tty; |
| { |
| extern bfd *sim_load_file (); /* ??? Don't know where this should live. */ |
| bfd *prog_bfd; |
| |
| /* FIXME: The code determining the type of z9k processor should be |
| moved from here to sim_open. */ |
| |
| prog_bfd = sim_load_file (sd, myname, z8k_callback, prog, abfd, |
| sim_kind == SIM_OPEN_DEBUG, |
| 0, sim_write); |
| if (prog_bfd == NULL) |
| return SIM_RC_FAIL; |
| if (bfd_get_mach (prog_bfd) == bfd_mach_z8001) |
| { |
| extern int sim_z8001_mode; |
| sim_z8001_mode = 1; |
| } |
| /* Close the bfd if we opened it. */ |
| if (abfd == NULL) |
| bfd_close (prog_bfd); |
| return SIM_RC_OK; |
| } |
| |
| SIM_RC |
| sim_create_inferior (sd, abfd, argv, env) |
| SIM_DESC sd; |
| struct _bfd *abfd; |
| char **argv; |
| char **env; |
| { |
| if (abfd != NULL) |
| tm_store_register (REG_PC, bfd_get_start_address (abfd)); |
| else |
| tm_store_register (REG_PC, 0); |
| return SIM_RC_OK; |
| } |
| |
| void |
| sim_do_command (sd, cmd) |
| SIM_DESC sd; |
| char *cmd; |
| { |
| } |
| |
| void |
| sim_set_callbacks (ptr) |
| host_callback *ptr; |
| { |
| z8k_callback = ptr; |
| } |