The NPC SPR is really only supposed to be used for FPGA debugging. It contains the same contents as PC, unless one plays games. Follow the or1ksim implementation in flushing delayed branch state when it is changed. The PPC SPR need not be updated every instruction, merely when we exit the TB or attempt to read its contents. Signed-off-by: Richard Henderson <rth@twiddle.net>
99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/*
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* OpenRISC Machine
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*
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* Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "cpu.h"
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#include "hw/hw.h"
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#include "hw/boards.h"
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#include "migration/cpu.h"
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static int get_sr(QEMUFile *f, void *opaque, size_t size, VMStateField *field)
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{
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CPUOpenRISCState *env = opaque;
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cpu_set_sr(env, qemu_get_be32(f));
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return 0;
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}
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static int put_sr(QEMUFile *f, void *opaque, size_t size,
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VMStateField *field, QJSON *vmdesc)
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{
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CPUOpenRISCState *env = opaque;
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qemu_put_be32(f, cpu_get_sr(env));
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return 0;
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}
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static const VMStateInfo vmstate_sr = {
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.name = "sr",
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.get = get_sr,
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.put = put_sr,
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};
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static const VMStateDescription vmstate_env = {
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.name = "env",
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.version_id = 4,
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.minimum_version_id = 4,
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.fields = (VMStateField[]) {
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VMSTATE_UINTTL_ARRAY(gpr, CPUOpenRISCState, 32),
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VMSTATE_UINTTL(pc, CPUOpenRISCState),
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VMSTATE_UINTTL(ppc, CPUOpenRISCState),
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VMSTATE_UINTTL(jmp_pc, CPUOpenRISCState),
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VMSTATE_UINTTL(lock_addr, CPUOpenRISCState),
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VMSTATE_UINTTL(lock_value, CPUOpenRISCState),
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VMSTATE_UINTTL(epcr, CPUOpenRISCState),
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VMSTATE_UINTTL(eear, CPUOpenRISCState),
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/* Save the architecture value of the SR, not the internally
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expanded version. Since this architecture value does not
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exist in memory to be stored, this requires a but of hoop
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jumping. We want OFFSET=0 so that we effectively pass ENV
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to the helper functions, and we need to fill in the name by
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hand since there's no field of that name. */
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{
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.name = "sr",
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.version_id = 0,
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.size = sizeof(uint32_t),
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.info = &vmstate_sr,
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.flags = VMS_SINGLE,
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.offset = 0
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},
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VMSTATE_UINT32(vr, CPUOpenRISCState),
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VMSTATE_UINT32(upr, CPUOpenRISCState),
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VMSTATE_UINT32(cpucfgr, CPUOpenRISCState),
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VMSTATE_UINT32(dmmucfgr, CPUOpenRISCState),
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VMSTATE_UINT32(immucfgr, CPUOpenRISCState),
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VMSTATE_UINT32(esr, CPUOpenRISCState),
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VMSTATE_UINT32(fpcsr, CPUOpenRISCState),
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VMSTATE_UINT64(mac, CPUOpenRISCState),
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VMSTATE_END_OF_LIST()
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}
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};
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const VMStateDescription vmstate_openrisc_cpu = {
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.name = "cpu",
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.version_id = 1,
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.minimum_version_id = 1,
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.fields = (VMStateField[]) {
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VMSTATE_CPU(),
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VMSTATE_STRUCT(env, OpenRISCCPU, 1, vmstate_env, CPUOpenRISCState),
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VMSTATE_END_OF_LIST()
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}
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};
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