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binutils-gdb/sim/fr30/traps.c

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Obsolete fr30.
2002-07-16 22:30:14 +08:00
// OBSOLETE /* fr30 exception, interrupt, and trap (EIT) support
// OBSOLETE Copyright (C) 1998, 1999 Free Software Foundation, Inc.
// OBSOLETE Contributed by Cygnus Solutions.
// OBSOLETE
// OBSOLETE This file is part of the GNU simulators.
// OBSOLETE
// OBSOLETE This program is free software; you can redistribute it and/or modify
// OBSOLETE it under the terms of the GNU General Public License as published by
// OBSOLETE the Free Software Foundation; either version 2, or (at your option)
// OBSOLETE any later version.
// OBSOLETE
// OBSOLETE This program is distributed in the hope that it will be useful,
// OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of
// OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// OBSOLETE GNU General Public License for more details.
// OBSOLETE
// OBSOLETE You should have received a copy of the GNU General Public License along
// OBSOLETE with this program; if not, write to the Free Software Foundation, Inc.,
// OBSOLETE 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
// OBSOLETE
// OBSOLETE #include "sim-main.h"
// OBSOLETE #include "targ-vals.h"
// OBSOLETE #include "cgen-engine.h"
// OBSOLETE
// OBSOLETE /* The semantic code invokes this for invalid (unrecognized) instructions. */
// OBSOLETE
// OBSOLETE SEM_PC
// OBSOLETE sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc)
// OBSOLETE {
// OBSOLETE SIM_DESC sd = CPU_STATE (current_cpu);
// OBSOLETE
// OBSOLETE #if 0
// OBSOLETE if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
// OBSOLETE {
// OBSOLETE h_bsm_set (current_cpu, h_sm_get (current_cpu));
// OBSOLETE h_bie_set (current_cpu, h_ie_get (current_cpu));
// OBSOLETE h_bcond_set (current_cpu, h_cond_get (current_cpu));
// OBSOLETE /* sm not changed */
// OBSOLETE h_ie_set (current_cpu, 0);
// OBSOLETE h_cond_set (current_cpu, 0);
// OBSOLETE
// OBSOLETE h_bpc_set (current_cpu, cia);
// OBSOLETE
// OBSOLETE sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
// OBSOLETE EIT_RSVD_INSN_ADDR);
// OBSOLETE }
// OBSOLETE else
// OBSOLETE #endif
// OBSOLETE sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL);
// OBSOLETE return vpc;
// OBSOLETE }
// OBSOLETE
// OBSOLETE /* Process an address exception. */
// OBSOLETE
// OBSOLETE void
// OBSOLETE fr30_core_signal (SIM_DESC sd, SIM_CPU *current_cpu, sim_cia cia,
// OBSOLETE unsigned int map, int nr_bytes, address_word addr,
// OBSOLETE transfer_type transfer, sim_core_signals sig)
// OBSOLETE {
// OBSOLETE #if 0
// OBSOLETE if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
// OBSOLETE {
// OBSOLETE h_bsm_set (current_cpu, h_sm_get (current_cpu));
// OBSOLETE h_bie_set (current_cpu, h_ie_get (current_cpu));
// OBSOLETE h_bcond_set (current_cpu, h_cond_get (current_cpu));
// OBSOLETE /* sm not changed */
// OBSOLETE h_ie_set (current_cpu, 0);
// OBSOLETE h_cond_set (current_cpu, 0);
// OBSOLETE
// OBSOLETE h_bpc_set (current_cpu, cia);
// OBSOLETE
// OBSOLETE sim_engine_restart (CPU_STATE (current_cpu), current_cpu, NULL,
// OBSOLETE EIT_ADDR_EXCP_ADDR);
// OBSOLETE }
// OBSOLETE else
// OBSOLETE #endif
// OBSOLETE sim_core_signal (sd, current_cpu, cia, map, nr_bytes, addr,
// OBSOLETE transfer, sig);
// OBSOLETE }
// OBSOLETE
// OBSOLETE /* Read/write functions for system call interface. */
// OBSOLETE
// OBSOLETE static int
// OBSOLETE syscall_read_mem (host_callback *cb, struct cb_syscall *sc,
// OBSOLETE unsigned long taddr, char *buf, int bytes)
// OBSOLETE {
// OBSOLETE SIM_DESC sd = (SIM_DESC) sc->p1;
// OBSOLETE SIM_CPU *cpu = (SIM_CPU *) sc->p2;
// OBSOLETE
// OBSOLETE return sim_core_read_buffer (sd, cpu, read_map, buf, taddr, bytes);
// OBSOLETE }
// OBSOLETE
// OBSOLETE static int
// OBSOLETE syscall_write_mem (host_callback *cb, struct cb_syscall *sc,
// OBSOLETE unsigned long taddr, const char *buf, int bytes)
// OBSOLETE {
// OBSOLETE SIM_DESC sd = (SIM_DESC) sc->p1;
// OBSOLETE SIM_CPU *cpu = (SIM_CPU *) sc->p2;
// OBSOLETE
// OBSOLETE return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes);
// OBSOLETE }
// OBSOLETE
// OBSOLETE /* Subroutine of fr30_int to save the PS and PC and setup for INT and INTE. */
// OBSOLETE
// OBSOLETE static void
// OBSOLETE setup_int (SIM_CPU *current_cpu, PCADDR pc)
// OBSOLETE {
// OBSOLETE USI ssp = fr30bf_h_dr_get (current_cpu, H_DR_SSP);
// OBSOLETE USI ps = fr30bf_h_ps_get (current_cpu);
// OBSOLETE
// OBSOLETE ssp -= 4;
// OBSOLETE SETMEMSI (current_cpu, pc, ssp, ps);
// OBSOLETE ssp -= 4;
// OBSOLETE SETMEMSI (current_cpu, pc, ssp, pc + 2);
// OBSOLETE fr30bf_h_dr_set (current_cpu, H_DR_SSP, ssp);
// OBSOLETE fr30bf_h_sbit_set (current_cpu, 0);
// OBSOLETE }
// OBSOLETE
// OBSOLETE /* Trap support.
// OBSOLETE The result is the pc address to continue at.
// OBSOLETE Preprocessing like saving the various registers has already been done. */
// OBSOLETE
// OBSOLETE USI
// OBSOLETE fr30_int (SIM_CPU *current_cpu, PCADDR pc, int num)
// OBSOLETE {
// OBSOLETE SIM_DESC sd = CPU_STATE (current_cpu);
// OBSOLETE host_callback *cb = STATE_CALLBACK (sd);
// OBSOLETE
// OBSOLETE #ifdef SIM_HAVE_BREAKPOINTS
// OBSOLETE /* Check for breakpoints "owned" by the simulator first, regardless
// OBSOLETE of --environment. */
// OBSOLETE if (num == TRAP_BREAKPOINT)
// OBSOLETE {
// OBSOLETE /* First try sim-break.c. If it's a breakpoint the simulator "owns"
// OBSOLETE it doesn't return. Otherwise it returns and let's us try. */
// OBSOLETE sim_handle_breakpoint (sd, current_cpu, pc);
// OBSOLETE /* Fall through. */
// OBSOLETE }
// OBSOLETE #endif
// OBSOLETE
// OBSOLETE if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
// OBSOLETE {
// OBSOLETE /* The new pc is the trap vector entry.
// OBSOLETE We assume there's a branch there to some handler. */
// OBSOLETE USI new_pc;
// OBSOLETE setup_int (current_cpu, pc);
// OBSOLETE fr30bf_h_ibit_set (current_cpu, 0);
// OBSOLETE new_pc = GETMEMSI (current_cpu, pc,
// OBSOLETE fr30bf_h_dr_get (current_cpu, H_DR_TBR)
// OBSOLETE + 1024 - ((num + 1) * 4));
// OBSOLETE return new_pc;
// OBSOLETE }
// OBSOLETE
// OBSOLETE switch (num)
// OBSOLETE {
// OBSOLETE case TRAP_SYSCALL :
// OBSOLETE {
// OBSOLETE /* TODO: find out what the ABI for this is */
// OBSOLETE CB_SYSCALL s;
// OBSOLETE
// OBSOLETE CB_SYSCALL_INIT (&s);
// OBSOLETE s.func = fr30bf_h_gr_get (current_cpu, 0);
// OBSOLETE s.arg1 = fr30bf_h_gr_get (current_cpu, 4);
// OBSOLETE s.arg2 = fr30bf_h_gr_get (current_cpu, 5);
// OBSOLETE s.arg3 = fr30bf_h_gr_get (current_cpu, 6);
// OBSOLETE
// OBSOLETE if (s.func == TARGET_SYS_exit)
// OBSOLETE {
// OBSOLETE sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, s.arg1);
// OBSOLETE }
// OBSOLETE
// OBSOLETE s.p1 = (PTR) sd;
// OBSOLETE s.p2 = (PTR) current_cpu;
// OBSOLETE s.read_mem = syscall_read_mem;
// OBSOLETE s.write_mem = syscall_write_mem;
// OBSOLETE cb_syscall (cb, &s);
// OBSOLETE fr30bf_h_gr_set (current_cpu, 2, s.errcode); /* TODO: check this one */
// OBSOLETE fr30bf_h_gr_set (current_cpu, 4, s.result);
// OBSOLETE fr30bf_h_gr_set (current_cpu, 1, s.result2); /* TODO: check this one */
// OBSOLETE break;
// OBSOLETE }
// OBSOLETE
// OBSOLETE case TRAP_BREAKPOINT:
// OBSOLETE sim_engine_halt (sd, current_cpu, NULL, pc,
// OBSOLETE sim_stopped, SIM_SIGTRAP);
// OBSOLETE break;
// OBSOLETE
// OBSOLETE default :
// OBSOLETE {
// OBSOLETE USI new_pc;
// OBSOLETE setup_int (current_cpu, pc);
// OBSOLETE fr30bf_h_ibit_set (current_cpu, 0);
// OBSOLETE new_pc = GETMEMSI (current_cpu, pc,
// OBSOLETE fr30bf_h_dr_get (current_cpu, H_DR_TBR)
// OBSOLETE + 1024 - ((num + 1) * 4));
// OBSOLETE return new_pc;
// OBSOLETE }
// OBSOLETE }
// OBSOLETE
// OBSOLETE /* Fake an "reti" insn.
// OBSOLETE Since we didn't push anything to stack, all we need to do is
// OBSOLETE update pc. */
// OBSOLETE return pc + 2;
// OBSOLETE }
// OBSOLETE
// OBSOLETE USI
// OBSOLETE fr30_inte (SIM_CPU *current_cpu, PCADDR pc, int num)
// OBSOLETE {
// OBSOLETE /* The new pc is the trap #9 vector entry.
// OBSOLETE We assume there's a branch there to some handler. */
// OBSOLETE USI new_pc;
// OBSOLETE setup_int (current_cpu, pc);
// OBSOLETE fr30bf_h_ilm_set (current_cpu, 4);
// OBSOLETE new_pc = GETMEMSI (current_cpu, pc,
// OBSOLETE fr30bf_h_dr_get (current_cpu, H_DR_TBR)
// OBSOLETE + 1024 - ((9 + 1) * 4));
// OBSOLETE return new_pc;
// OBSOLETE }
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