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3c2e80ad2f
Check if partition and process tables are properly aligned, in their size, according to PowerISA 3.1B, Book III 6.7.6 programming note. Hardware and KVM also raise an exception in these cases. Signed-off-by: Leandro Lupori <leandro.lupori@eldorado.org.br> Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com> Message-Id: <20220628133959.15131-2-leandro.lupori@eldorado.org.br> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/*
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* PowerPC ISAV3 BookS emulation generic mmu helpers for qemu.
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*
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* Copyright (c) 2017 Suraj Jitindar Singh, 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 2.1 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 "cpu.h"
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#include "mmu-hash64.h"
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#include "mmu-book3s-v3.h"
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#include "mmu-radix64.h"
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bool ppc64_v3_get_pate(PowerPCCPU *cpu, target_ulong lpid, ppc_v3_pate_t *entry)
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{
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uint64_t patb = cpu->env.spr[SPR_PTCR] & PTCR_PATB;
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uint64_t pats = cpu->env.spr[SPR_PTCR] & PTCR_PATS;
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/* Check if partition table is properly aligned */
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if (patb & MAKE_64BIT_MASK(0, pats + 12)) {
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return false;
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}
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/* Calculate number of entries */
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pats = 1ull << (pats + 12 - 4);
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if (pats <= lpid) {
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return false;
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}
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/* Grab entry */
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patb += 16 * lpid;
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entry->dw0 = ldq_phys(CPU(cpu)->as, patb);
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entry->dw1 = ldq_phys(CPU(cpu)->as, patb + 8);
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return true;
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}
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