/* m32r exception, interrupt, and trap (EIT) support
- Copyright (C) 1998 Free Software Foundation, Inc.
+ Copyright (C) 1998-2020 Free Software Foundation, Inc.
Contributed by Cygnus Solutions.
-This file is part of GDB, the GNU debugger.
+ 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 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 3 of the License, 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.
+ 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. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "sim-main.h"
+#include "sim-syscall.h"
#include "targ-vals.h"
-/* The semantic code invokes this for illegal (unrecognized) instructions. */
+#define TRAP_FLUSH_CACHE 12
+/* The semantic code invokes this for invalid (unrecognized) instructions. */
-void
-sim_engine_illegal_insn (SIM_CPU *current_cpu, PCADDR cia)
+SEM_PC
+sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC pc)
{
SIM_DESC sd = CPU_STATE (current_cpu);
else
#endif
sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL);
+
+ return pc;
}
/* Process an address exception. */
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);
+ m32rbf_h_cr_set (current_cpu, H_CR_BBPC,
+ m32rbf_h_cr_get (current_cpu, H_CR_BPC));
+ switch (MACH_NUM (CPU_MACH (current_cpu)))
+ {
+ case MACH_M32R:
+ m32rbf_h_bpsw_set (current_cpu, m32rbf_h_psw_get (current_cpu));
+ /* sm not changed. */
+ m32rbf_h_psw_set (current_cpu, m32rbf_h_psw_get (current_cpu) & 0x80);
+ break;
+ case MACH_M32RX:
+ m32rxf_h_bpsw_set (current_cpu, m32rxf_h_psw_get (current_cpu));
+ /* sm not changed. */
+ m32rxf_h_psw_set (current_cpu, m32rxf_h_psw_get (current_cpu) & 0x80);
+ break;
+ case MACH_M32R2:
+ m32r2f_h_bpsw_set (current_cpu, m32r2f_h_psw_get (current_cpu));
+ /* sm not changed. */
+ m32r2f_h_psw_set (current_cpu, m32r2f_h_psw_get (current_cpu) & 0x80);
+ break;
+ default:
+ abort ();
+ }
+
+ m32rbf_h_cr_set (current_cpu, H_CR_BPC, 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);
}
\f
-/* 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
-a_m32r_trap (SIM_CPU *current_cpu, int num)
+m32r_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, sim_pc_get (current_cpu));
- /* Fall through. */
- }
-#endif
-
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;
+ We assume there's a branch there to some handler.
+ Use cr5 as EVB (EIT Vector Base) register. */
+ /* USI new_pc = EIT_TRAP_BASE_ADDR + num * 4; */
+ USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
return new_pc;
}
{
case TRAP_SYSCALL :
{
- CB_SYSCALL s;
-
- CB_SYSCALL_INIT (&s);
- s.func = h_gr_get (current_cpu, 0);
- s.arg1 = h_gr_get (current_cpu, 1);
- s.arg2 = h_gr_get (current_cpu, 2);
- s.arg3 = h_gr_get (current_cpu, 3);
-
- if (s.func == TARGET_SYS_exit)
- {
- sim_engine_halt (sd, current_cpu, NULL, sim_pc_get (current_cpu),
- 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 (STATE_CALLBACK (sd), &s);
- h_gr_set (current_cpu, 2, s.errcode);
- h_gr_set (current_cpu, 0, s.result);
- h_gr_set (current_cpu, 1, s.result2);
+ long result, result2;
+ int errcode;
+
+ sim_syscall_multi (current_cpu,
+ m32rbf_h_gr_get (current_cpu, 0),
+ m32rbf_h_gr_get (current_cpu, 1),
+ m32rbf_h_gr_get (current_cpu, 2),
+ m32rbf_h_gr_get (current_cpu, 3),
+ m32rbf_h_gr_get (current_cpu, 4),
+ &result, &result2, &errcode);
+
+ m32rbf_h_gr_set (current_cpu, 2, errcode);
+ m32rbf_h_gr_set (current_cpu, 0, result);
+ m32rbf_h_gr_set (current_cpu, 1, result2);
break;
}
case TRAP_BREAKPOINT:
- sim_engine_halt (sd, current_cpu, NULL, NULL_CIA,
+ sim_engine_halt (sd, current_cpu, NULL, pc,
sim_stopped, SIM_SIGTRAP);
break;
+ case TRAP_FLUSH_CACHE:
+ /* Do nothing. */
+ break;
+
default :
{
- USI new_pc = EIT_TRAP_BASE_ADDR + num * 4;
+ /* USI new_pc = EIT_TRAP_BASE_ADDR + num * 4; */
+ /* Use cr5 as EVB (EIT Vector Base) register. */
+ USI new_pc = m32rbf_h_cr_get (current_cpu, 5) + 0x40 + num * 4;
return new_pc;
}
}
/* Fake an "rte" insn. */
- return (sim_pc_get (current_cpu) & -4) + 4;
+ /* FIXME: Should duplicate all of rte processing. */
+ return (pc & -4) + 4;
}
projects / deliverable / binutils-gdb.git / blobdiff