034685f9ce
The CIA_{GET,SET} macros serve the same function as CPU_PC_{GET,SET}
except the latter adds a layer of indirection via the sim state. This
lets models set up different functions at runtime and doesn't reach so
directly into the arch-specific cpu state.
It also doesn't make sense to have two sets of macros that do exactly
the same thing, so lets standardize on the one that gets us more.
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/* This file is part of the program psim.
|
|
|
|
Copyright (C) 1998, Andrew Cagney <cagney@highland.com.au>
|
|
|
|
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.
|
|
|
|
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 "m16_idecode.h"
|
|
#include "m32_idecode.h"
|
|
#include "bfd.h"
|
|
|
|
|
|
#define SD sd
|
|
#define CPU cpu
|
|
|
|
void
|
|
sim_engine_run (SIM_DESC sd,
|
|
int next_cpu_nr,
|
|
int nr_cpus, /* ignore */
|
|
int siggnal) /* ignore */
|
|
{
|
|
sim_cpu *cpu = STATE_CPU (sd, next_cpu_nr);
|
|
address_word cia = CPU_PC_GET (cpu);
|
|
|
|
while (1)
|
|
{
|
|
address_word nia;
|
|
|
|
#if defined (ENGINE_ISSUE_PREFIX_HOOK)
|
|
ENGINE_ISSUE_PREFIX_HOOK ();
|
|
#endif
|
|
|
|
if ((cia & 1))
|
|
{
|
|
m16_instruction_word instruction_0 = IMEM16 (cia);
|
|
nia = m16_idecode_issue (sd, instruction_0, cia);
|
|
}
|
|
else
|
|
{
|
|
m32_instruction_word instruction_0 = IMEM32 (cia);
|
|
nia = m32_idecode_issue (sd, instruction_0, cia);
|
|
}
|
|
|
|
#if defined (ENGINE_ISSUE_POSTFIX_HOOK)
|
|
ENGINE_ISSUE_POSTFIX_HOOK ();
|
|
#endif
|
|
|
|
/* Update the instruction address */
|
|
cia = nia;
|
|
|
|
/* process any events */
|
|
if (sim_events_tick (sd))
|
|
{
|
|
CPU_PC_SET (CPU, cia);
|
|
sim_events_process (sd);
|
|
cia = CPU_PC_GET (CPU);
|
|
}
|
|
|
|
}
|
|
}
|