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/* CPU support.
Copyright (C) 1998-2024 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 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/>. */
/* This must come before any other includes. */
#include "defs.h"
#include <stdlib.h>
#include "bfd.h"
#include "sim-main.h"
/* Allocate space for all cpus in the simulator.
Space for the cpu must currently exist prior to parsing ARGV. */
/* ??? wip. better solution must wait. */
SIM_RC
sim_cpu_alloc_all_extra (SIM_DESC sd, int ncpus, size_t extra_bytes)
{
int c;
/* TODO: This should be a command line option for users to control. */
if (ncpus == 0)
ncpus = MAX_NR_PROCESSORS;
for (c = 0; c < ncpus; ++c)
STATE_CPU (sd, c) = sim_cpu_alloc_extra (sd, extra_bytes);
return SIM_RC_OK;
}
/* Allocate space for a cpu object.
EXTRA_BYTES is additional space to allocate for the sim_cpu struct. */
sim_cpu *
sim_cpu_alloc_extra (SIM_DESC sd, size_t extra_bytes)
{
sim_cpu *cpu = zalloc (sizeof (*cpu));
#ifndef CGEN_ARCH
# define cgen_cpu_max_extra_bytes(sd) 0
#endif
extra_bytes += cgen_cpu_max_extra_bytes (sd);
if (extra_bytes)
CPU_ARCH_DATA (cpu) = zalloc (extra_bytes);
return cpu;
}
/* Free all resources held by all cpus. */
void
sim_cpu_free_all (SIM_DESC sd)
{
int c;
for (c = 0; c < MAX_NR_PROCESSORS; ++c)
if (STATE_CPU (sd, c))
sim_cpu_free (STATE_CPU (sd, c));
}
/* Free all resources used by CPU. */
void
sim_cpu_free (sim_cpu *cpu)
{
free (CPU_ARCH_DATA (cpu));
free (cpu);
}
/* PC utilities. */
sim_cia
sim_pc_get (sim_cpu *cpu)
{
return (* CPU_PC_FETCH (cpu)) (cpu);
}
void
sim_pc_set (sim_cpu *cpu, sim_cia newval)
{
(* CPU_PC_STORE (cpu)) (cpu, newval);
}
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