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* Alpha emulation cpu micro-operations helpers for qemu.
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* Copyright (c) 2007 Jocelyn Mayer
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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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* 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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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#include "host-utils.h"
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#include "softfloat.h"
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#include "op_helper.h"
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#define MEMSUFFIX _raw
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#include "op_helper_mem.h"
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#if !defined(CONFIG_USER_ONLY)
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#define MEMSUFFIX _kernel
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#include "op_helper_mem.h"
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#define MEMSUFFIX _executive
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#include "op_helper_mem.h"
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#define MEMSUFFIX _supervisor
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#include "op_helper_mem.h"
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#define MEMSUFFIX _user
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#include "op_helper_mem.h"
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/* This is used for pal modes */
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#define MEMSUFFIX _data
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#include "op_helper_mem.h"
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void helper_tb_flush (void)
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void cpu_dump_EA (target_ulong EA);
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void helper_print_mem_EA (target_ulong EA)
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/*****************************************************************************/
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/* Exceptions processing helpers */
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void helper_excp (uint32_t excp, uint32_t error)
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env->exception_index = excp;
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env->error_code = error;
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void helper_amask (void)
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switch (env->implver) {
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/* EV4, EV45, LCA, LCA45 & EV5 */
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void helper_load_pcc (void)
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void helper_load_implver (void)
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void helper_load_fpcr (void)
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#ifdef CONFIG_SOFTFLOAT
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T0 |= env->fp_status.float_exception_flags << 52;
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if (env->fp_status.float_exception_flags)
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env->ipr[IPR_EXC_SUM] &= ~0x3E:
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env->ipr[IPR_EXC_SUM] |= env->fp_status.float_exception_flags << 1;
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switch (env->fp_status.float_rounding_mode) {
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case float_round_nearest_even:
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case float_round_down:
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case float_round_to_zero:
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void helper_store_fpcr (void)
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#ifdef CONFIG_SOFTFLOAT
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set_float_exception_flags((T0 >> 52) & 0x3F, &FP_STATUS);
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switch ((T0 >> 58) & 3) {
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set_float_rounding_mode(float_round_to_zero, &FP_STATUS);
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set_float_rounding_mode(float_round_down, &FP_STATUS);
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set_float_rounding_mode(float_round_nearest_even, &FP_STATUS);
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set_float_rounding_mode(float_round_up, &FP_STATUS);
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void helper_load_irf (void)
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void helper_set_irf (void)
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void helper_clear_irf (void)
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void helper_addqv (void)
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if (unlikely((T2 ^ T1 ^ (-1ULL)) & (T2 ^ T0) & (1ULL << 63))) {
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helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
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void helper_addlv (void)
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T0 = (uint32_t)(T0 + T1);
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if (unlikely((T2 ^ T1 ^ (-1UL)) & (T2 ^ T0) & (1UL << 31))) {
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helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
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void helper_subqv (void)
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if (unlikely(((~T2) ^ T0 ^ (-1ULL)) & ((~T2) ^ T1) & (1ULL << 63))) {
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helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
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void helper_sublv (void)
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T0 = (uint32_t)(T0 - T1);
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if (unlikely(((~T2) ^ T0 ^ (-1UL)) & ((~T2) ^ T1) & (1UL << 31))) {
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helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
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void helper_mullv (void)
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int64_t res = (int64_t)T0 * (int64_t)T1;
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if (unlikely((int32_t)res != res)) {
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helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
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T0 = (int64_t)((int32_t)res);
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muls64(&tl, &th, T0, T1);
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/* If th != 0 && th != -1, then we had an overflow */
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if (unlikely((th + 1) > 1)) {
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helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
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void helper_ctpop (void)
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void helper_ctlz (void)
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void helper_cttz (void)
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static always_inline uint64_t byte_zap (uint64_t op, uint8_t mskb)
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mask |= ((mskb >> 0) & 1) * 0x00000000000000FFULL;
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mask |= ((mskb >> 1) & 1) * 0x000000000000FF00ULL;
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mask |= ((mskb >> 2) & 1) * 0x0000000000FF0000ULL;
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mask |= ((mskb >> 3) & 1) * 0x00000000FF000000ULL;
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mask |= ((mskb >> 4) & 1) * 0x000000FF00000000ULL;
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mask |= ((mskb >> 5) & 1) * 0x0000FF0000000000ULL;
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mask |= ((mskb >> 6) & 1) * 0x00FF000000000000ULL;
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mask |= ((mskb >> 7) & 1) * 0xFF00000000000000ULL;
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void helper_mskbl (void)
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T0 = byte_zap(T0, 0x01 << (T1 & 7));
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void helper_extbl (void)
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T0 = byte_zap(T0, 0xFE);
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void helper_insbl (void)
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T0 = byte_zap(T0, ~(0x01 << (T1 & 7)));
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void helper_mskwl (void)
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T0 = byte_zap(T0, 0x03 << (T1 & 7));
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void helper_extwl (void)
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T0 = byte_zap(T0, 0xFC);
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void helper_inswl (void)
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T0 = byte_zap(T0, ~(0x03 << (T1 & 7)));
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void helper_mskll (void)
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T0 = byte_zap(T0, 0x0F << (T1 & 7));
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void helper_extll (void)
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T0 = byte_zap(T0, 0xF0);
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void helper_insll (void)
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T0 = byte_zap(T0, ~(0x0F << (T1 & 7)));
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void helper_zap (void)
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T0 = byte_zap(T0, T1);
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void helper_zapnot (void)
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T0 = byte_zap(T0, ~T1);
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void helper_mskql (void)
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T0 = byte_zap(T0, 0xFF << (T1 & 7));
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void helper_extql (void)
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T0 = byte_zap(T0, 0x00);
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void helper_insql (void)
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T0 = byte_zap(T0, ~(0xFF << (T1 & 7)));
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void helper_mskwh (void)
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T0 = byte_zap(T0, (0x03 << (T1 & 7)) >> 8);
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void helper_inswh (void)
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T0 >>= 64 - ((T1 & 7) * 8);
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T0 = byte_zap(T0, ~((0x03 << (T1 & 7)) >> 8));
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void helper_extwh (void)
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T0 <<= 64 - ((T1 & 7) * 8);
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T0 = byte_zap(T0, ~0x07);
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void helper_msklh (void)
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T0 = byte_zap(T0, (0x0F << (T1 & 7)) >> 8);
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void helper_inslh (void)
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T0 >>= 64 - ((T1 & 7) * 8);
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T0 = byte_zap(T0, ~((0x0F << (T1 & 7)) >> 8));
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void helper_extlh (void)
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T0 <<= 64 - ((T1 & 7) * 8);
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T0 = byte_zap(T0, ~0x0F);
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void helper_mskqh (void)
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T0 = byte_zap(T0, (0xFF << (T1 & 7)) >> 8);
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void helper_insqh (void)
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T0 >>= 64 - ((T1 & 7) * 8);
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T0 = byte_zap(T0, ~((0xFF << (T1 & 7)) >> 8));
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void helper_extqh (void)
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T0 <<= 64 - ((T1 & 7) * 8);
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T0 = byte_zap(T0, 0x00);
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void helper_cmpbge (void)
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uint8_t opa, opb, res;
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for (i = 0; i < 7; i++) {
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void helper_cmov_fir (int freg)
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env->fir[freg] = FT1;
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void helper_sqrts (void)
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FT0 = float32_sqrt(FT0, &FP_STATUS);
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void helper_cpys (void)
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r.i = p.i & 0x8000000000000000ULL;
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r.i |= q.i & ~0x8000000000000000ULL;
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void helper_cpysn (void)
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r.i = (~p.i) & 0x8000000000000000ULL;
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r.i |= q.i & ~0x8000000000000000ULL;
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void helper_cpyse (void)
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r.i = p.i & 0xFFF0000000000000ULL;
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r.i |= q.i & ~0xFFF0000000000000ULL;
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void helper_itofs (void)
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FT0 = int64_to_float32(p.i, &FP_STATUS);
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void helper_ftois (void)
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p.i = float32_to_int64(FT0, &FP_STATUS);
464
void helper_sqrtt (void)
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FT0 = float64_sqrt(FT0, &FP_STATUS);
469
void helper_cmptun (void)
477
if (float64_is_nan(FT0) || float64_is_nan(FT1))
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p.i = 0x4000000000000000ULL;
482
void helper_cmpteq (void)
490
if (float64_eq(FT0, FT1, &FP_STATUS))
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p.i = 0x4000000000000000ULL;
495
void helper_cmptle (void)
503
if (float64_le(FT0, FT1, &FP_STATUS))
504
p.i = 0x4000000000000000ULL;
508
void helper_cmptlt (void)
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if (float64_lt(FT0, FT1, &FP_STATUS))
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p.i = 0x4000000000000000ULL;
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void helper_itoft (void)
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FT0 = int64_to_float64(p.i, &FP_STATUS);
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void helper_ftoit (void)
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p.i = float64_to_int64(FT0, &FP_STATUS);
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static always_inline int vaxf_is_valid (float ff)
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exp = (p.i >> 23) & 0xFF;
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mant = p.i & 0x007FFFFF;
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if (exp == 0 && ((p.i & 0x80000000) || mant != 0)) {
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/* Reserved operands / Dirty zero */
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static always_inline float vaxf_to_ieee32 (float ff)
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exp = (p.i >> 23) & 0xFF;
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static always_inline float ieee32_to_vaxf (float fi)
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exp = (p.i >> 23) & 0xFF;
592
mant = p.i & 0x007FFFFF;
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/* NaN or infinity */
596
} else if (exp == 0) {
616
void helper_addf (void)
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if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
623
ft0 = vaxf_to_ieee32(FT0);
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ft1 = vaxf_to_ieee32(FT1);
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ft2 = float32_add(ft0, ft1, &FP_STATUS);
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FT0 = ieee32_to_vaxf(ft2);
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void helper_subf (void)
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if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
636
ft0 = vaxf_to_ieee32(FT0);
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ft1 = vaxf_to_ieee32(FT1);
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ft2 = float32_sub(ft0, ft1, &FP_STATUS);
639
FT0 = ieee32_to_vaxf(ft2);
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void helper_mulf (void)
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if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
649
ft0 = vaxf_to_ieee32(FT0);
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ft1 = vaxf_to_ieee32(FT1);
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ft2 = float32_mul(ft0, ft1, &FP_STATUS);
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FT0 = ieee32_to_vaxf(ft2);
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void helper_divf (void)
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if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
662
ft0 = vaxf_to_ieee32(FT0);
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ft1 = vaxf_to_ieee32(FT1);
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ft2 = float32_div(ft0, ft1, &FP_STATUS);
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FT0 = ieee32_to_vaxf(ft2);
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void helper_sqrtf (void)
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if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
675
ft0 = vaxf_to_ieee32(FT0);
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ft1 = float32_sqrt(ft0, &FP_STATUS);
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FT0 = ieee32_to_vaxf(ft1);
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void helper_itoff (void)
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static always_inline int vaxg_is_valid (double ff)
694
exp = (p.i >> 52) & 0x7FF;
695
mant = p.i & 0x000FFFFFFFFFFFFFULL;
696
if (exp == 0 && ((p.i & 0x8000000000000000ULL) || mant != 0)) {
697
/* Reserved operands / Dirty zero */
704
static always_inline double vaxg_to_ieee64 (double fg)
713
exp = (p.i >> 52) & 0x7FF;
724
static always_inline double ieee64_to_vaxg (double fi)
734
exp = (p.i >> 52) & 0x7FF;
735
mant = p.i & 0x000FFFFFFFFFFFFFULL;
737
/* NaN or infinity */
738
p.i = 1; /* VAX dirty zero */
739
} else if (exp == 0) {
750
p.i = 1; /* VAX dirty zero */
759
void helper_addg (void)
761
double ft0, ft1, ft2;
763
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
766
ft0 = vaxg_to_ieee64(FT0);
767
ft1 = vaxg_to_ieee64(FT1);
768
ft2 = float64_add(ft0, ft1, &FP_STATUS);
769
FT0 = ieee64_to_vaxg(ft2);
772
void helper_subg (void)
774
double ft0, ft1, ft2;
776
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
779
ft0 = vaxg_to_ieee64(FT0);
780
ft1 = vaxg_to_ieee64(FT1);
781
ft2 = float64_sub(ft0, ft1, &FP_STATUS);
782
FT0 = ieee64_to_vaxg(ft2);
785
void helper_mulg (void)
787
double ft0, ft1, ft2;
789
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
792
ft0 = vaxg_to_ieee64(FT0);
793
ft1 = vaxg_to_ieee64(FT1);
794
ft2 = float64_mul(ft0, ft1, &FP_STATUS);
795
FT0 = ieee64_to_vaxg(ft2);
798
void helper_divg (void)
800
double ft0, ft1, ft2;
802
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
805
ft0 = vaxg_to_ieee64(FT0);
806
ft1 = vaxg_to_ieee64(FT1);
807
ft2 = float64_div(ft0, ft1, &FP_STATUS);
808
FT0 = ieee64_to_vaxg(ft2);
811
void helper_sqrtg (void)
815
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
818
ft0 = vaxg_to_ieee64(FT0);
819
ft1 = float64_sqrt(ft0, &FP_STATUS);
820
FT0 = ieee64_to_vaxg(ft1);
823
void helper_cmpgeq (void)
831
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
834
ft0 = vaxg_to_ieee64(FT0);
835
ft1 = vaxg_to_ieee64(FT1);
837
if (float64_eq(ft0, ft1, &FP_STATUS))
838
p.u = 0x4000000000000000ULL;
842
void helper_cmpglt (void)
850
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
853
ft0 = vaxg_to_ieee64(FT0);
854
ft1 = vaxg_to_ieee64(FT1);
856
if (float64_lt(ft0, ft1, &FP_STATUS))
857
p.u = 0x4000000000000000ULL;
861
void helper_cmpgle (void)
869
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
872
ft0 = vaxg_to_ieee64(FT0);
873
ft1 = vaxg_to_ieee64(FT1);
875
if (float64_le(ft0, ft1, &FP_STATUS))
876
p.u = 0x4000000000000000ULL;
880
void helper_cvtqs (void)
891
void helper_cvttq (void)
902
void helper_cvtqt (void)
913
void helper_cvtqf (void)
921
FT0 = ieee32_to_vaxf(p.u);
924
void helper_cvtgf (void)
928
ft0 = vaxg_to_ieee64(FT0);
929
FT0 = ieee32_to_vaxf(ft0);
932
void helper_cvtgd (void)
937
void helper_cvtgq (void)
944
p.u = vaxg_to_ieee64(FT0);
948
void helper_cvtqg (void)
956
FT0 = ieee64_to_vaxg(p.u);
959
void helper_cvtdg (void)
964
void helper_cvtlq (void)
972
q.u = (p.u >> 29) & 0x3FFFFFFF;
974
q.u = (int64_t)((int32_t)q.u);
978
static always_inline void __helper_cvtql (int s, int v)
986
q.u = ((uint64_t)(p.u & 0xC0000000)) << 32;
987
q.u |= ((uint64_t)(p.u & 0x7FFFFFFF)) << 29;
989
if (v && (int64_t)((int32_t)p.u) != (int64_t)p.u) {
990
helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
997
void helper_cvtql (void)
999
__helper_cvtql(0, 0);
1002
void helper_cvtqlv (void)
1004
__helper_cvtql(0, 1);
1007
void helper_cvtqlsv (void)
1009
__helper_cvtql(1, 1);
1012
void helper_cmpfeq (void)
1014
if (float64_eq(FT0, FT1, &FP_STATUS))
1020
void helper_cmpfne (void)
1022
if (float64_eq(FT0, FT1, &FP_STATUS))
1028
void helper_cmpflt (void)
1030
if (float64_lt(FT0, FT1, &FP_STATUS))
1036
void helper_cmpfle (void)
1038
if (float64_lt(FT0, FT1, &FP_STATUS))
1044
void helper_cmpfgt (void)
1046
if (float64_le(FT0, FT1, &FP_STATUS))
1052
void helper_cmpfge (void)
1054
if (float64_lt(FT0, FT1, &FP_STATUS))
1060
#if !defined (CONFIG_USER_ONLY)
1061
void helper_mfpr (int iprn)
1065
if (cpu_alpha_mfpr(env, iprn, &val) == 0)
1069
void helper_mtpr (int iprn)
1071
cpu_alpha_mtpr(env, iprn, T0, NULL);
1075
#if defined(HOST_SPARC) || defined(HOST_SPARC64)
1076
void helper_reset_FT0 (void)
1081
void helper_reset_FT1 (void)
1086
void helper_reset_FT2 (void)
1092
/*****************************************************************************/
1093
/* Softmmu support */
1094
#if !defined (CONFIG_USER_ONLY)
1097
# define GETPC() ((void*)((unsigned long)__builtin_return_address(0) & 0x7fffffffUL))
1099
# define GETPC() (__builtin_return_address(0))
1102
/* XXX: the two following helpers are pure hacks.
1103
* Hopefully, we emulate the PALcode, then we should never see
1104
* HW_LD / HW_ST instructions.
1106
void helper_ld_phys_to_virt (void)
1108
uint64_t tlb_addr, physaddr;
1112
mmu_idx = cpu_mmu_index(env);
1113
index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
1115
tlb_addr = env->tlb_table[mmu_idx][index].addr_read;
1116
if ((T0 & TARGET_PAGE_MASK) ==
1117
(tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
1118
physaddr = T0 + env->tlb_table[mmu_idx][index].addend;
1120
/* the page is not in the TLB : fill it */
1122
tlb_fill(T0, 0, mmu_idx, retaddr);
1128
void helper_st_phys_to_virt (void)
1130
uint64_t tlb_addr, physaddr;
1134
mmu_idx = cpu_mmu_index(env);
1135
index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
1137
tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
1138
if ((T0 & TARGET_PAGE_MASK) ==
1139
(tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
1140
physaddr = T0 + env->tlb_table[mmu_idx][index].addend;
1142
/* the page is not in the TLB : fill it */
1144
tlb_fill(T0, 1, mmu_idx, retaddr);
1150
#define MMUSUFFIX _mmu
1153
#include "softmmu_template.h"
1156
#include "softmmu_template.h"
1159
#include "softmmu_template.h"
1162
#include "softmmu_template.h"
1164
/* try to fill the TLB and return an exception if error. If retaddr is
1165
NULL, it means that the function was called in C code (i.e. not
1166
from generated code or from helper.c) */
1167
/* XXX: fix it to restore all registers */
1168
void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
1170
TranslationBlock *tb;
1171
CPUState *saved_env;
1175
/* XXX: hack to restore env in all cases, even if not called from
1178
env = cpu_single_env;
1179
ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
1180
if (!likely(ret == 0)) {
1181
if (likely(retaddr)) {
1182
/* now we have a real cpu fault */
1183
pc = (unsigned long)retaddr;
1184
tb = tb_find_pc(pc);
1186
/* the PC is inside the translated code. It means that we have
1187
a virtual CPU fault */
1188
cpu_restore_state(tb, env, pc, NULL);
1191
/* Exception index and error code are already set */