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Diffstat (limited to 'sim/i960/traps.c')
| -rw-r--r-- | sim/i960/traps.c | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/sim/i960/traps.c b/sim/i960/traps.c deleted file mode 100644 index 570fc95eeba..00000000000 --- a/sim/i960/traps.c +++ /dev/null @@ -1,214 +0,0 @@ -/* i960 exception, interrupt, and trap (EIT) support - Copyright (C) 1998, 1999 Free Software Foundation, Inc. - Contributed by Cygnus Solutions. - -This file is part of GDB, the GNU debugger. - -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 "sim-main.h" -#include "targ-vals.h" - -/* The semantic code invokes this for illegal (unrecognized) instructions. */ - -SEM_PC -sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc) -{ - SIM_DESC sd = CPU_STATE (current_cpu); - -#if 0 - if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT) - { - h_bsm_set (current_cpu, h_sm_get (current_cpu)); - h_bie_set (current_cpu, h_ie_get (current_cpu)); - h_bcond_set (current_cpu, h_cond_get (current_cpu)); - /* sm not changed */ - h_ie_set (current_cpu, 0); - h_cond_set (current_cpu, 0); - - h_bpc_set (current_cpu, cia); - - sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL, - EIT_RSVD_INSN_ADDR); - } - else -#endif - sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL); - return vpc; -} - -/* Process an address exception. */ - -void -i960_core_signal (SIM_DESC sd, SIM_CPU *current_cpu, sim_cia cia, - unsigned int map, int nr_bytes, address_word addr, - transfer_type transfer, sim_core_signals sig) -{ -#if 0 - if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT) - { - h_bsm_set (current_cpu, h_sm_get (current_cpu)); - h_bie_set (current_cpu, h_ie_get (current_cpu)); - h_bcond_set (current_cpu, h_cond_get (current_cpu)); - /* sm not changed */ - h_ie_set (current_cpu, 0); - h_cond_set (current_cpu, 0); - - h_bpc_set (current_cpu, cia); - - sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL, - EIT_ADDR_EXCP_ADDR); - } - else -#endif - sim_core_signal (sd, current_cpu, cia, map, nr_bytes, addr, - transfer, sig); -} - -/* Read/write functions for system call interface. */ - -static int -syscall_read_mem (host_callback *cb, struct cb_syscall *sc, - unsigned long taddr, char *buf, int bytes) -{ - SIM_DESC sd = (SIM_DESC) sc->p1; - SIM_CPU *cpu = (SIM_CPU *) sc->p2; - - return sim_core_read_buffer (sd, cpu, read_map, buf, taddr, bytes); -} - -static int -syscall_write_mem (host_callback *cb, struct cb_syscall *sc, - unsigned long taddr, const char *buf, int bytes) -{ - SIM_DESC sd = (SIM_DESC) sc->p1; - SIM_CPU *cpu = (SIM_CPU *) sc->p2; - - return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes); -} - -/* Trap support. - The result is the pc address to continue at. - Preprocessing like saving the various registers has already been done. */ - -USI -i960_trap (SIM_CPU *current_cpu, PCADDR pc, int num) -{ - SIM_DESC sd = CPU_STATE (current_cpu); - host_callback *cb = STATE_CALLBACK (sd); - -#ifdef SIM_HAVE_BREAKPOINTS - /* Check for breakpoints "owned" by the simulator first, regardless - of --environment. */ - if (num == TRAP_BREAKPOINT) - { - /* First try sim-break.c. If it's a breakpoint the simulator "owns" - it doesn't return. Otherwise it returns and let's us try. */ - sim_handle_breakpoint (sd, current_cpu, pc); - /* Fall through. */ - } -#endif - -#if 0 - /* ??? wilson, don't know what this does. */ - if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT) - { - /* The new pc is the trap vector entry. - We assume there's a branch there to some handler. */ - USI new_pc = EIT_TRAP_BASE_ADDR + num * 4; - return new_pc; - } -#endif - - switch (num) - { - default: - case TRAP_SYSCALL : - { - CB_SYSCALL s; - - CB_SYSCALL_INIT (&s); - s.func = num; - s.arg1 = a_i960_h_gr_get (current_cpu, 16); - s.arg2 = a_i960_h_gr_get (current_cpu, 17); - s.arg3 = a_i960_h_gr_get (current_cpu, 18); - - if (s.func == TARGET_SYS_exit) - { - sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, s.arg1); - } - - s.p1 = (PTR) sd; - s.p2 = (PTR) current_cpu; - s.read_mem = syscall_read_mem; - s.write_mem = syscall_write_mem; - cb_syscall (cb, &s); - /* ??? This stuff is probably wrong, but libgloss doesn't look at - these values, so it shouldn't matter. */ - a_i960_h_gr_set (current_cpu, 18, s.errcode); - a_i960_h_gr_set (current_cpu, 16, s.result); - a_i960_h_gr_set (current_cpu, 17, s.result2); - break; - } - - case TRAP_BREAKPOINT: - sim_engine_halt (sd, current_cpu, NULL, NULL_CIA, - sim_stopped, SIM_SIGTRAP); - break; - -#if 0 - /* ??? wilson, don't know what this does. */ - default : - { - USI new_pc = EIT_TRAP_BASE_ADDR + num * 4; - return new_pc; - } -#endif - } - - /* Fake an "rte" insn. */ - /* FIXME: Should duplicate all of rte processing. */ - return (pc & -4) + 4; -} - -/* Breakpoint support. - The result is the pc address to continue at. */ -/* ??? This is an editted copy of the above. */ - -USI -i960_breakpoint (SIM_CPU *current_cpu, PCADDR pc) -{ - SIM_DESC sd = CPU_STATE (current_cpu); - host_callback *cb = STATE_CALLBACK (sd); - -#ifdef SIM_HAVE_BREAKPOINTS - /* Check for breakpoints "owned" by the simulator first, regardless - of --environment. */ - if (num == TRAP_BREAKPOINT) - { - /* First try sim-break.c. If it's a breakpoint the simulator "owns" - it doesn't return. Otherwise it returns and let's us try. */ - sim_handle_breakpoint (sd, current_cpu, pc); - /* Fall through. */ - } -#endif - - sim_engine_halt (sd, current_cpu, NULL, NULL_CIA, - sim_stopped, SIM_SIGTRAP); - - /* Fake an "rte" insn. */ - /* FIXME: Should duplicate all of rte processing. */ - return (pc & -4) + 4; -} |