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/*
* Power ISA decode for Storage Control instructions
*
* Copyright (c) 2022 Instituto de Pesquisas Eldorado (eldorado.org.br)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* Store Control Instructions
*/
#include "mmu-book3s-v3.h"
static bool do_tlbie(DisasContext *ctx, arg_X_tlbie *a, bool local)
{
#if defined(CONFIG_USER_ONLY)
gen_priv_exception(ctx, POWERPC_EXCP_PRIV_OPC);
return true;
#else
TCGv_i32 t1;
int rb;
rb = a->rb;
if ((ctx->insns_flags2 & PPC2_ISA300) == 0) {
/*
* Before Power ISA 3.0, the corresponding bits of RIC, PRS, and R
* (and RS for tlbiel) were reserved fields and should be ignored.
*/
a->ric = 0;
a->prs = false;
a->r = false;
if (local) {
a->rs = 0;
}
}
if (ctx->pr) {
/* tlbie[l] is privileged... */
gen_priv_exception(ctx, POWERPC_EXCP_PRIV_OPC);
return true;
} else if (!ctx->hv) {
if ((!a->prs && ctx->hr) || (!local && !ctx->gtse)) {
/*
* ... except when PRS=0 and HR=1, or when GTSE=0 for tlbie,
* making it hypervisor privileged.
*/
gen_priv_exception(ctx, POWERPC_EXCP_PRIV_OPC);
return true;
}
}
if (!local && NARROW_MODE(ctx)) {
TCGv t0 = tcg_temp_new();
tcg_gen_ext32u_tl(t0, cpu_gpr[rb]);
gen_helper_tlbie(cpu_env, t0);
tcg_temp_free(t0);
#if defined(TARGET_PPC64)
/*
* ISA 3.1B says that MSR SF must be 1 when this instruction is executed;
* otherwise the results are undefined.
*/
} else if (a->r) {
gen_helper_tlbie_isa300(cpu_env, cpu_gpr[rb], cpu_gpr[a->rs],
tcg_constant_i32(a->ric << TLBIE_F_RIC_SHIFT |
a->prs << TLBIE_F_PRS_SHIFT |
a->r << TLBIE_F_R_SHIFT |
local << TLBIE_F_LOCAL_SHIFT));
return true;
#endif
} else {
gen_helper_tlbie(cpu_env, cpu_gpr[rb]);
}
if (local) {
return true;
}
t1 = tcg_temp_new_i32();
tcg_gen_ld_i32(t1, cpu_env, offsetof(CPUPPCState, tlb_need_flush));
tcg_gen_ori_i32(t1, t1, TLB_NEED_GLOBAL_FLUSH);
tcg_gen_st_i32(t1, cpu_env, offsetof(CPUPPCState, tlb_need_flush));
tcg_temp_free_i32(t1);
return true;
#endif
}
TRANS_FLAGS(MEM_TLBIE, TLBIE, do_tlbie, false)
TRANS_FLAGS(MEM_TLBIE, TLBIEL, do_tlbie, true)
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