c19940db0f
Some functions unrelated to TCG use helper_m{t,f}vscr, so generic versions
of those functions were added to cpu.c, in preparation for compilation
without TCG
Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Message-Id: <20210512140813.112884-2-bruno.larsen@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
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* PowerPC CPU routines for qemu.
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*
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* Copyright (c) 2017 Nikunj A Dadhania, 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 "cpu-models.h"
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#include "fpu/softfloat-helpers.h"
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target_ulong cpu_read_xer(CPUPPCState *env)
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{
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if (is_isa300(env)) {
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return env->xer | (env->so << XER_SO) |
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(env->ov << XER_OV) | (env->ca << XER_CA) |
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(env->ov32 << XER_OV32) | (env->ca32 << XER_CA32);
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}
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return env->xer | (env->so << XER_SO) | (env->ov << XER_OV) |
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(env->ca << XER_CA);
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}
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void cpu_write_xer(CPUPPCState *env, target_ulong xer)
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{
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env->so = (xer >> XER_SO) & 1;
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env->ov = (xer >> XER_OV) & 1;
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env->ca = (xer >> XER_CA) & 1;
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/* write all the flags, while reading back check of isa300 */
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env->ov32 = (xer >> XER_OV32) & 1;
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env->ca32 = (xer >> XER_CA32) & 1;
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env->xer = xer & ~((1ul << XER_SO) |
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(1ul << XER_OV) | (1ul << XER_CA) |
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(1ul << XER_OV32) | (1ul << XER_CA32));
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}
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void ppc_store_vscr(CPUPPCState *env, uint32_t vscr)
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{
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env->vscr = vscr & ~(1u << VSCR_SAT);
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/* Which bit we set is completely arbitrary, but clear the rest. */
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env->vscr_sat.u64[0] = vscr & (1u << VSCR_SAT);
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env->vscr_sat.u64[1] = 0;
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set_flush_to_zero((vscr >> VSCR_NJ) & 1, &env->vec_status);
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}
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uint32_t ppc_get_vscr(CPUPPCState *env)
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{
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uint32_t sat = (env->vscr_sat.u64[0] | env->vscr_sat.u64[1]) != 0;
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return env->vscr | (sat << VSCR_SAT);
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}
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