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mmu_helper.c is, for obvious reasons, almost entirely concerned with softmmu builds of qemu. However, it does contain one stub function which is used when CONFIG_USER_ONLY=y - the user only versoin of cpu_ppc_handle_mmu_fault, which always triggers an exception. The entire rest of the file is surrounded by #if !defined(CONFIG_USER_ONLY). We clean this up by moving the user only stub into its own new file, removing the ifdefs and building mmu_helper.c only when CONFIG_SOFTMMU is set. This also lets us remove the #define of cpu_handle_mmu_fault to cpu_ppc_handle_mmu_fault - that name is only used from generic code for user only - so we just name our split user version by the generic name. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/*
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* PowerPC MMU stub handling for user mode emulation
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*
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* Copyright (c) 2003-2007 Jocelyn Mayer
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* Copyright (c) 2013 David Gibson, IBM Corporation.
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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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int cpu_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
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int mmu_idx)
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{
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int exception, error_code;
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if (rw == 2) {
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exception = POWERPC_EXCP_ISI;
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error_code = 0x40000000;
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} else {
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exception = POWERPC_EXCP_DSI;
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error_code = 0x40000000;
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if (rw) {
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error_code |= 0x02000000;
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}
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env->spr[SPR_DAR] = address;
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env->spr[SPR_DSISR] = error_code;
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}
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env->exception_index = exception;
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env->error_code = error_code;
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return 1;
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}
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