2a7a47fc6c
On the e500 series, accessing SPR_EPR magically turns into an access at that CPU's IACK register on the MPIC. Implement that logic to get kernels that make use of that feature work. Signed-off-by: Alexander Graf <agraf@suse.de>
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/*
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* PowerPC emulation helpers for QEMU.
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*
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* Copyright (c) 2003-2007 Jocelyn Mayer
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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 "cpu.h"
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#include "helper.h"
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/*****************************************************************************/
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/* SPR accesses */
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#if !defined(CONFIG_USER_ONLY)
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/*
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* This is an ugly helper for EPR, which is basically the same as accessing
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* the IACK (PIAC) register on the MPIC. Because we model the MPIC as a device
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* that can only talk to the CPU through MMIO, let's access it that way!
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*/
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target_ulong helper_load_epr(CPUPPCState *env)
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{
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return ldl_phys(env->mpic_cpu_base + 0xA0);
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}
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#endif
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