root / target-alpha / op_helper.c @ 6ad02592
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/*
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* Alpha emulation cpu micro-operations helpers for qemu.
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*
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* Copyright (c) 2007 Jocelyn Mayer
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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, 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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*/
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#include "exec.h" |
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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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#endif
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void helper_tb_flush (void) |
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{ |
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tlb_flush(env, 1);
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} |
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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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cpu_dump_EA(EA); |
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} |
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/*****************************************************************************/
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/* Exceptions processing helpers */
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void helper_excp (int excp, int error) |
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{ |
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env->exception_index = excp; |
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env->error_code = error; |
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cpu_loop_exit(); |
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} |
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uint64_t helper_amask (uint64_t arg) |
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{ |
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switch (env->implver) {
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case IMPLVER_2106x:
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/* EV4, EV45, LCA, LCA45 & EV5 */
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break;
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case IMPLVER_21164:
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case IMPLVER_21264:
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case IMPLVER_21364:
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arg &= ~env->amask; |
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break;
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} |
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return arg;
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} |
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uint64_t helper_load_pcc (void)
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{ |
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/* XXX: TODO */
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return 0; |
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} |
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uint64_t helper_load_implver (void)
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{ |
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return env->implver;
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} |
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void helper_load_fpcr (void) |
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{ |
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T0 = 0;
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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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T0 |= 1ULL << 63; |
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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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#endif
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switch (env->fp_status.float_rounding_mode) {
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case float_round_nearest_even:
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T0 |= 2ULL << 58; |
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break;
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case float_round_down:
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T0 |= 1ULL << 58; |
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break;
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case float_round_up:
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T0 |= 3ULL << 58; |
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break;
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case float_round_to_zero:
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break;
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} |
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} |
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void helper_store_fpcr (void) |
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{ |
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#ifdef CONFIG_SOFTFLOAT
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set_float_exception_flags((T0 >> 52) & 0x3F, &FP_STATUS); |
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#endif
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switch ((T0 >> 58) & 3) { |
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case 0: |
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set_float_rounding_mode(float_round_to_zero, &FP_STATUS); |
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break;
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case 1: |
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set_float_rounding_mode(float_round_down, &FP_STATUS); |
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break;
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case 2: |
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set_float_rounding_mode(float_round_nearest_even, &FP_STATUS); |
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break;
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case 3: |
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set_float_rounding_mode(float_round_up, &FP_STATUS); |
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break;
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} |
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} |
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spinlock_t intr_cpu_lock = SPIN_LOCK_UNLOCKED; |
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uint64_t helper_rs(void)
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{ |
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uint64_t tmp; |
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spin_lock(&intr_cpu_lock); |
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tmp = env->intr_flag; |
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env->intr_flag = 1;
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spin_unlock(&intr_cpu_lock); |
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return tmp;
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} |
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uint64_t helper_rc(void)
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{ |
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uint64_t tmp; |
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spin_lock(&intr_cpu_lock); |
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tmp = env->intr_flag; |
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env->intr_flag = 0;
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spin_unlock(&intr_cpu_lock); |
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return tmp;
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} |
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void helper_addqv (void) |
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{ |
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T2 = T0; |
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T0 += T1; |
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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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} |
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} |
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void helper_addlv (void) |
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{ |
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T2 = T0; |
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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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} |
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} |
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void helper_subqv (void) |
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{ |
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T2 = T0; |
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T0 -= T1; |
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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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} |
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} |
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void helper_sublv (void) |
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{ |
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T2 = T0; |
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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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} |
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} |
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void helper_mullv (void) |
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{ |
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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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} |
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T0 = (int64_t)((int32_t)res); |
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} |
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void helper_mulqv ()
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{ |
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uint64_t tl, th; |
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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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} |
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T0 = tl; |
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} |
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uint64_t helper_ctpop (uint64_t arg) |
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{ |
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return ctpop64(arg);
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} |
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uint64_t helper_ctlz (uint64_t arg) |
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{ |
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return clz64(arg);
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} |
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uint64_t helper_cttz (uint64_t arg) |
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{ |
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return ctz64(arg);
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} |
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static always_inline uint64_t byte_zap (uint64_t op, uint8_t mskb)
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{ |
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uint64_t mask; |
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mask = 0;
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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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return op & ~mask;
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} |
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uint64_t helper_mskbl(uint64_t val, uint64_t mask) |
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{ |
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return byte_zap(val, 0x01 << (mask & 7)); |
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} |
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uint64_t helper_insbl(uint64_t val, uint64_t mask) |
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{ |
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val <<= (mask & 7) * 8; |
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return byte_zap(val, ~(0x01 << (mask & 7))); |
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} |
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uint64_t helper_mskwl(uint64_t val, uint64_t mask) |
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{ |
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return byte_zap(val, 0x03 << (mask & 7)); |
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} |
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uint64_t helper_inswl(uint64_t val, uint64_t mask) |
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{ |
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val <<= (mask & 7) * 8; |
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return byte_zap(val, ~(0x03 << (mask & 7))); |
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} |
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uint64_t helper_mskll(uint64_t val, uint64_t mask) |
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{ |
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return byte_zap(val, 0x0F << (mask & 7)); |
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} |
282 |
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uint64_t helper_insll(uint64_t val, uint64_t mask) |
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{ |
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val <<= (mask & 7) * 8; |
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return byte_zap(val, ~(0x0F << (mask & 7))); |
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} |
288 |
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uint64_t helper_zap(uint64_t val, uint64_t mask) |
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{ |
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return byte_zap(val, mask);
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} |
293 |
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uint64_t helper_zapnot(uint64_t val, uint64_t mask) |
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{ |
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return byte_zap(val, ~mask);
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} |
298 |
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uint64_t helper_mskql(uint64_t val, uint64_t mask) |
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{ |
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return byte_zap(val, 0xFF << (mask & 7)); |
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} |
303 |
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uint64_t helper_insql(uint64_t val, uint64_t mask) |
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{ |
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val <<= (mask & 7) * 8; |
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return byte_zap(val, ~(0xFF << (mask & 7))); |
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} |
309 |
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uint64_t helper_mskwh(uint64_t val, uint64_t mask) |
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{ |
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return byte_zap(val, (0x03 << (mask & 7)) >> 8); |
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} |
314 |
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uint64_t helper_inswh(uint64_t val, uint64_t mask) |
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{ |
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val >>= 64 - ((mask & 7) * 8); |
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return byte_zap(val, ~((0x03 << (mask & 7)) >> 8)); |
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} |
320 |
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uint64_t helper_msklh(uint64_t val, uint64_t mask) |
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{ |
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return byte_zap(val, (0x0F << (mask & 7)) >> 8); |
324 |
} |
325 |
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uint64_t helper_inslh(uint64_t val, uint64_t mask) |
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{ |
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val >>= 64 - ((mask & 7) * 8); |
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return byte_zap(val, ~((0x0F << (mask & 7)) >> 8)); |
330 |
} |
331 |
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uint64_t helper_mskqh(uint64_t val, uint64_t mask) |
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{ |
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return byte_zap(val, (0xFF << (mask & 7)) >> 8); |
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} |
336 |
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uint64_t helper_insqh(uint64_t val, uint64_t mask) |
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{ |
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val >>= 64 - ((mask & 7) * 8); |
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return byte_zap(val, ~((0xFF << (mask & 7)) >> 8)); |
341 |
} |
342 |
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void helper_cmpbge (void) |
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{ |
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uint8_t opa, opb, res; |
346 |
int i;
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347 |
|
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res = 0;
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for (i = 0; i < 7; i++) { |
350 |
opa = T0 >> (i * 8);
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opb = T1 >> (i * 8);
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if (opa >= opb)
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res |= 1 << i;
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354 |
} |
355 |
T0 = res; |
356 |
} |
357 |
|
358 |
void helper_cmov_fir (int freg) |
359 |
{ |
360 |
if (FT0 != 0) |
361 |
env->fir[freg] = FT1; |
362 |
} |
363 |
|
364 |
void helper_sqrts (void) |
365 |
{ |
366 |
FT0 = float32_sqrt(FT0, &FP_STATUS); |
367 |
} |
368 |
|
369 |
void helper_cpys (void) |
370 |
{ |
371 |
union {
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372 |
double d;
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373 |
uint64_t i; |
374 |
} p, q, r; |
375 |
|
376 |
p.d = FT0; |
377 |
q.d = FT1; |
378 |
r.i = p.i & 0x8000000000000000ULL;
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379 |
r.i |= q.i & ~0x8000000000000000ULL;
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380 |
FT0 = r.d; |
381 |
} |
382 |
|
383 |
void helper_cpysn (void) |
384 |
{ |
385 |
union {
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386 |
double d;
|
387 |
uint64_t i; |
388 |
} p, q, r; |
389 |
|
390 |
p.d = FT0; |
391 |
q.d = FT1; |
392 |
r.i = (~p.i) & 0x8000000000000000ULL;
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393 |
r.i |= q.i & ~0x8000000000000000ULL;
|
394 |
FT0 = r.d; |
395 |
} |
396 |
|
397 |
void helper_cpyse (void) |
398 |
{ |
399 |
union {
|
400 |
double d;
|
401 |
uint64_t i; |
402 |
} p, q, r; |
403 |
|
404 |
p.d = FT0; |
405 |
q.d = FT1; |
406 |
r.i = p.i & 0xFFF0000000000000ULL;
|
407 |
r.i |= q.i & ~0xFFF0000000000000ULL;
|
408 |
FT0 = r.d; |
409 |
} |
410 |
|
411 |
void helper_itofs (void) |
412 |
{ |
413 |
union {
|
414 |
double d;
|
415 |
uint64_t i; |
416 |
} p; |
417 |
|
418 |
p.d = FT0; |
419 |
FT0 = int64_to_float32(p.i, &FP_STATUS); |
420 |
} |
421 |
|
422 |
void helper_ftois (void) |
423 |
{ |
424 |
union {
|
425 |
double d;
|
426 |
uint64_t i; |
427 |
} p; |
428 |
|
429 |
p.i = float32_to_int64(FT0, &FP_STATUS); |
430 |
FT0 = p.d; |
431 |
} |
432 |
|
433 |
void helper_sqrtt (void) |
434 |
{ |
435 |
FT0 = float64_sqrt(FT0, &FP_STATUS); |
436 |
} |
437 |
|
438 |
void helper_cmptun (void) |
439 |
{ |
440 |
union {
|
441 |
double d;
|
442 |
uint64_t i; |
443 |
} p; |
444 |
|
445 |
p.i = 0;
|
446 |
if (float64_is_nan(FT0) || float64_is_nan(FT1))
|
447 |
p.i = 0x4000000000000000ULL;
|
448 |
FT0 = p.d; |
449 |
} |
450 |
|
451 |
void helper_cmpteq (void) |
452 |
{ |
453 |
union {
|
454 |
double d;
|
455 |
uint64_t i; |
456 |
} p; |
457 |
|
458 |
p.i = 0;
|
459 |
if (float64_eq(FT0, FT1, &FP_STATUS))
|
460 |
p.i = 0x4000000000000000ULL;
|
461 |
FT0 = p.d; |
462 |
} |
463 |
|
464 |
void helper_cmptle (void) |
465 |
{ |
466 |
union {
|
467 |
double d;
|
468 |
uint64_t i; |
469 |
} p; |
470 |
|
471 |
p.i = 0;
|
472 |
if (float64_le(FT0, FT1, &FP_STATUS))
|
473 |
p.i = 0x4000000000000000ULL;
|
474 |
FT0 = p.d; |
475 |
} |
476 |
|
477 |
void helper_cmptlt (void) |
478 |
{ |
479 |
union {
|
480 |
double d;
|
481 |
uint64_t i; |
482 |
} p; |
483 |
|
484 |
p.i = 0;
|
485 |
if (float64_lt(FT0, FT1, &FP_STATUS))
|
486 |
p.i = 0x4000000000000000ULL;
|
487 |
FT0 = p.d; |
488 |
} |
489 |
|
490 |
void helper_itoft (void) |
491 |
{ |
492 |
union {
|
493 |
double d;
|
494 |
uint64_t i; |
495 |
} p; |
496 |
|
497 |
p.d = FT0; |
498 |
FT0 = int64_to_float64(p.i, &FP_STATUS); |
499 |
} |
500 |
|
501 |
void helper_ftoit (void) |
502 |
{ |
503 |
union {
|
504 |
double d;
|
505 |
uint64_t i; |
506 |
} p; |
507 |
|
508 |
p.i = float64_to_int64(FT0, &FP_STATUS); |
509 |
FT0 = p.d; |
510 |
} |
511 |
|
512 |
static always_inline int vaxf_is_valid (float ff) |
513 |
{ |
514 |
union {
|
515 |
float f;
|
516 |
uint32_t i; |
517 |
} p; |
518 |
uint32_t exp, mant; |
519 |
|
520 |
p.f = ff; |
521 |
exp = (p.i >> 23) & 0xFF; |
522 |
mant = p.i & 0x007FFFFF;
|
523 |
if (exp == 0 && ((p.i & 0x80000000) || mant != 0)) { |
524 |
/* Reserved operands / Dirty zero */
|
525 |
return 0; |
526 |
} |
527 |
|
528 |
return 1; |
529 |
} |
530 |
|
531 |
static always_inline float vaxf_to_ieee32 (float ff) |
532 |
{ |
533 |
union {
|
534 |
float f;
|
535 |
uint32_t i; |
536 |
} p; |
537 |
uint32_t exp; |
538 |
|
539 |
p.f = ff; |
540 |
exp = (p.i >> 23) & 0xFF; |
541 |
if (exp < 3) { |
542 |
/* Underflow */
|
543 |
p.f = 0.0; |
544 |
} else {
|
545 |
p.f *= 0.25; |
546 |
} |
547 |
|
548 |
return p.f;
|
549 |
} |
550 |
|
551 |
static always_inline float ieee32_to_vaxf (float fi) |
552 |
{ |
553 |
union {
|
554 |
float f;
|
555 |
uint32_t i; |
556 |
} p; |
557 |
uint32_t exp, mant; |
558 |
|
559 |
p.f = fi; |
560 |
exp = (p.i >> 23) & 0xFF; |
561 |
mant = p.i & 0x007FFFFF;
|
562 |
if (exp == 255) { |
563 |
/* NaN or infinity */
|
564 |
p.i = 1;
|
565 |
} else if (exp == 0) { |
566 |
if (mant == 0) { |
567 |
/* Zero */
|
568 |
p.i = 0;
|
569 |
} else {
|
570 |
/* Denormalized */
|
571 |
p.f *= 2.0; |
572 |
} |
573 |
} else {
|
574 |
if (exp >= 253) { |
575 |
/* Overflow */
|
576 |
p.i = 1;
|
577 |
} else {
|
578 |
p.f *= 4.0; |
579 |
} |
580 |
} |
581 |
|
582 |
return p.f;
|
583 |
} |
584 |
|
585 |
void helper_addf (void) |
586 |
{ |
587 |
float ft0, ft1, ft2;
|
588 |
|
589 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
590 |
/* XXX: TODO */
|
591 |
} |
592 |
ft0 = vaxf_to_ieee32(FT0); |
593 |
ft1 = vaxf_to_ieee32(FT1); |
594 |
ft2 = float32_add(ft0, ft1, &FP_STATUS); |
595 |
FT0 = ieee32_to_vaxf(ft2); |
596 |
} |
597 |
|
598 |
void helper_subf (void) |
599 |
{ |
600 |
float ft0, ft1, ft2;
|
601 |
|
602 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
603 |
/* XXX: TODO */
|
604 |
} |
605 |
ft0 = vaxf_to_ieee32(FT0); |
606 |
ft1 = vaxf_to_ieee32(FT1); |
607 |
ft2 = float32_sub(ft0, ft1, &FP_STATUS); |
608 |
FT0 = ieee32_to_vaxf(ft2); |
609 |
} |
610 |
|
611 |
void helper_mulf (void) |
612 |
{ |
613 |
float ft0, ft1, ft2;
|
614 |
|
615 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
616 |
/* XXX: TODO */
|
617 |
} |
618 |
ft0 = vaxf_to_ieee32(FT0); |
619 |
ft1 = vaxf_to_ieee32(FT1); |
620 |
ft2 = float32_mul(ft0, ft1, &FP_STATUS); |
621 |
FT0 = ieee32_to_vaxf(ft2); |
622 |
} |
623 |
|
624 |
void helper_divf (void) |
625 |
{ |
626 |
float ft0, ft1, ft2;
|
627 |
|
628 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
629 |
/* XXX: TODO */
|
630 |
} |
631 |
ft0 = vaxf_to_ieee32(FT0); |
632 |
ft1 = vaxf_to_ieee32(FT1); |
633 |
ft2 = float32_div(ft0, ft1, &FP_STATUS); |
634 |
FT0 = ieee32_to_vaxf(ft2); |
635 |
} |
636 |
|
637 |
void helper_sqrtf (void) |
638 |
{ |
639 |
float ft0, ft1;
|
640 |
|
641 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
642 |
/* XXX: TODO */
|
643 |
} |
644 |
ft0 = vaxf_to_ieee32(FT0); |
645 |
ft1 = float32_sqrt(ft0, &FP_STATUS); |
646 |
FT0 = ieee32_to_vaxf(ft1); |
647 |
} |
648 |
|
649 |
void helper_itoff (void) |
650 |
{ |
651 |
/* XXX: TODO */
|
652 |
} |
653 |
|
654 |
static always_inline int vaxg_is_valid (double ff) |
655 |
{ |
656 |
union {
|
657 |
double f;
|
658 |
uint64_t i; |
659 |
} p; |
660 |
uint64_t exp, mant; |
661 |
|
662 |
p.f = ff; |
663 |
exp = (p.i >> 52) & 0x7FF; |
664 |
mant = p.i & 0x000FFFFFFFFFFFFFULL;
|
665 |
if (exp == 0 && ((p.i & 0x8000000000000000ULL) || mant != 0)) { |
666 |
/* Reserved operands / Dirty zero */
|
667 |
return 0; |
668 |
} |
669 |
|
670 |
return 1; |
671 |
} |
672 |
|
673 |
static always_inline double vaxg_to_ieee64 (double fg) |
674 |
{ |
675 |
union {
|
676 |
double f;
|
677 |
uint64_t i; |
678 |
} p; |
679 |
uint32_t exp; |
680 |
|
681 |
p.f = fg; |
682 |
exp = (p.i >> 52) & 0x7FF; |
683 |
if (exp < 3) { |
684 |
/* Underflow */
|
685 |
p.f = 0.0; |
686 |
} else {
|
687 |
p.f *= 0.25; |
688 |
} |
689 |
|
690 |
return p.f;
|
691 |
} |
692 |
|
693 |
static always_inline double ieee64_to_vaxg (double fi) |
694 |
{ |
695 |
union {
|
696 |
double f;
|
697 |
uint64_t i; |
698 |
} p; |
699 |
uint64_t mant; |
700 |
uint32_t exp; |
701 |
|
702 |
p.f = fi; |
703 |
exp = (p.i >> 52) & 0x7FF; |
704 |
mant = p.i & 0x000FFFFFFFFFFFFFULL;
|
705 |
if (exp == 255) { |
706 |
/* NaN or infinity */
|
707 |
p.i = 1; /* VAX dirty zero */ |
708 |
} else if (exp == 0) { |
709 |
if (mant == 0) { |
710 |
/* Zero */
|
711 |
p.i = 0;
|
712 |
} else {
|
713 |
/* Denormalized */
|
714 |
p.f *= 2.0; |
715 |
} |
716 |
} else {
|
717 |
if (exp >= 2045) { |
718 |
/* Overflow */
|
719 |
p.i = 1; /* VAX dirty zero */ |
720 |
} else {
|
721 |
p.f *= 4.0; |
722 |
} |
723 |
} |
724 |
|
725 |
return p.f;
|
726 |
} |
727 |
|
728 |
void helper_addg (void) |
729 |
{ |
730 |
double ft0, ft1, ft2;
|
731 |
|
732 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
733 |
/* XXX: TODO */
|
734 |
} |
735 |
ft0 = vaxg_to_ieee64(FT0); |
736 |
ft1 = vaxg_to_ieee64(FT1); |
737 |
ft2 = float64_add(ft0, ft1, &FP_STATUS); |
738 |
FT0 = ieee64_to_vaxg(ft2); |
739 |
} |
740 |
|
741 |
void helper_subg (void) |
742 |
{ |
743 |
double ft0, ft1, ft2;
|
744 |
|
745 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
746 |
/* XXX: TODO */
|
747 |
} |
748 |
ft0 = vaxg_to_ieee64(FT0); |
749 |
ft1 = vaxg_to_ieee64(FT1); |
750 |
ft2 = float64_sub(ft0, ft1, &FP_STATUS); |
751 |
FT0 = ieee64_to_vaxg(ft2); |
752 |
} |
753 |
|
754 |
void helper_mulg (void) |
755 |
{ |
756 |
double ft0, ft1, ft2;
|
757 |
|
758 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
759 |
/* XXX: TODO */
|
760 |
} |
761 |
ft0 = vaxg_to_ieee64(FT0); |
762 |
ft1 = vaxg_to_ieee64(FT1); |
763 |
ft2 = float64_mul(ft0, ft1, &FP_STATUS); |
764 |
FT0 = ieee64_to_vaxg(ft2); |
765 |
} |
766 |
|
767 |
void helper_divg (void) |
768 |
{ |
769 |
double ft0, ft1, ft2;
|
770 |
|
771 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
772 |
/* XXX: TODO */
|
773 |
} |
774 |
ft0 = vaxg_to_ieee64(FT0); |
775 |
ft1 = vaxg_to_ieee64(FT1); |
776 |
ft2 = float64_div(ft0, ft1, &FP_STATUS); |
777 |
FT0 = ieee64_to_vaxg(ft2); |
778 |
} |
779 |
|
780 |
void helper_sqrtg (void) |
781 |
{ |
782 |
double ft0, ft1;
|
783 |
|
784 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
785 |
/* XXX: TODO */
|
786 |
} |
787 |
ft0 = vaxg_to_ieee64(FT0); |
788 |
ft1 = float64_sqrt(ft0, &FP_STATUS); |
789 |
FT0 = ieee64_to_vaxg(ft1); |
790 |
} |
791 |
|
792 |
void helper_cmpgeq (void) |
793 |
{ |
794 |
union {
|
795 |
double d;
|
796 |
uint64_t u; |
797 |
} p; |
798 |
double ft0, ft1;
|
799 |
|
800 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
801 |
/* XXX: TODO */
|
802 |
} |
803 |
ft0 = vaxg_to_ieee64(FT0); |
804 |
ft1 = vaxg_to_ieee64(FT1); |
805 |
p.u = 0;
|
806 |
if (float64_eq(ft0, ft1, &FP_STATUS))
|
807 |
p.u = 0x4000000000000000ULL;
|
808 |
FT0 = p.d; |
809 |
} |
810 |
|
811 |
void helper_cmpglt (void) |
812 |
{ |
813 |
union {
|
814 |
double d;
|
815 |
uint64_t u; |
816 |
} p; |
817 |
double ft0, ft1;
|
818 |
|
819 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
820 |
/* XXX: TODO */
|
821 |
} |
822 |
ft0 = vaxg_to_ieee64(FT0); |
823 |
ft1 = vaxg_to_ieee64(FT1); |
824 |
p.u = 0;
|
825 |
if (float64_lt(ft0, ft1, &FP_STATUS))
|
826 |
p.u = 0x4000000000000000ULL;
|
827 |
FT0 = p.d; |
828 |
} |
829 |
|
830 |
void helper_cmpgle (void) |
831 |
{ |
832 |
union {
|
833 |
double d;
|
834 |
uint64_t u; |
835 |
} p; |
836 |
double ft0, ft1;
|
837 |
|
838 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
839 |
/* XXX: TODO */
|
840 |
} |
841 |
ft0 = vaxg_to_ieee64(FT0); |
842 |
ft1 = vaxg_to_ieee64(FT1); |
843 |
p.u = 0;
|
844 |
if (float64_le(ft0, ft1, &FP_STATUS))
|
845 |
p.u = 0x4000000000000000ULL;
|
846 |
FT0 = p.d; |
847 |
} |
848 |
|
849 |
void helper_cvtqs (void) |
850 |
{ |
851 |
union {
|
852 |
double d;
|
853 |
uint64_t u; |
854 |
} p; |
855 |
|
856 |
p.d = FT0; |
857 |
FT0 = (float)p.u;
|
858 |
} |
859 |
|
860 |
void helper_cvttq (void) |
861 |
{ |
862 |
union {
|
863 |
double d;
|
864 |
uint64_t u; |
865 |
} p; |
866 |
|
867 |
p.u = FT0; |
868 |
FT0 = p.d; |
869 |
} |
870 |
|
871 |
void helper_cvtqt (void) |
872 |
{ |
873 |
union {
|
874 |
double d;
|
875 |
uint64_t u; |
876 |
} p; |
877 |
|
878 |
p.d = FT0; |
879 |
FT0 = p.u; |
880 |
} |
881 |
|
882 |
void helper_cvtqf (void) |
883 |
{ |
884 |
union {
|
885 |
double d;
|
886 |
uint64_t u; |
887 |
} p; |
888 |
|
889 |
p.d = FT0; |
890 |
FT0 = ieee32_to_vaxf(p.u); |
891 |
} |
892 |
|
893 |
void helper_cvtgf (void) |
894 |
{ |
895 |
double ft0;
|
896 |
|
897 |
ft0 = vaxg_to_ieee64(FT0); |
898 |
FT0 = ieee32_to_vaxf(ft0); |
899 |
} |
900 |
|
901 |
void helper_cvtgd (void) |
902 |
{ |
903 |
/* XXX: TODO */
|
904 |
} |
905 |
|
906 |
void helper_cvtgq (void) |
907 |
{ |
908 |
union {
|
909 |
double d;
|
910 |
uint64_t u; |
911 |
} p; |
912 |
|
913 |
p.u = vaxg_to_ieee64(FT0); |
914 |
FT0 = p.d; |
915 |
} |
916 |
|
917 |
void helper_cvtqg (void) |
918 |
{ |
919 |
union {
|
920 |
double d;
|
921 |
uint64_t u; |
922 |
} p; |
923 |
|
924 |
p.d = FT0; |
925 |
FT0 = ieee64_to_vaxg(p.u); |
926 |
} |
927 |
|
928 |
void helper_cvtdg (void) |
929 |
{ |
930 |
/* XXX: TODO */
|
931 |
} |
932 |
|
933 |
void helper_cvtlq (void) |
934 |
{ |
935 |
union {
|
936 |
double d;
|
937 |
uint64_t u; |
938 |
} p, q; |
939 |
|
940 |
p.d = FT0; |
941 |
q.u = (p.u >> 29) & 0x3FFFFFFF; |
942 |
q.u |= (p.u >> 32);
|
943 |
q.u = (int64_t)((int32_t)q.u); |
944 |
FT0 = q.d; |
945 |
} |
946 |
|
947 |
static always_inline void __helper_cvtql (int s, int v) |
948 |
{ |
949 |
union {
|
950 |
double d;
|
951 |
uint64_t u; |
952 |
} p, q; |
953 |
|
954 |
p.d = FT0; |
955 |
q.u = ((uint64_t)(p.u & 0xC0000000)) << 32; |
956 |
q.u |= ((uint64_t)(p.u & 0x7FFFFFFF)) << 29; |
957 |
FT0 = q.d; |
958 |
if (v && (int64_t)((int32_t)p.u) != (int64_t)p.u) {
|
959 |
helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW); |
960 |
} |
961 |
if (s) {
|
962 |
/* TODO */
|
963 |
} |
964 |
} |
965 |
|
966 |
void helper_cvtql (void) |
967 |
{ |
968 |
__helper_cvtql(0, 0); |
969 |
} |
970 |
|
971 |
void helper_cvtqlv (void) |
972 |
{ |
973 |
__helper_cvtql(0, 1); |
974 |
} |
975 |
|
976 |
void helper_cvtqlsv (void) |
977 |
{ |
978 |
__helper_cvtql(1, 1); |
979 |
} |
980 |
|
981 |
void helper_cmpfeq (void) |
982 |
{ |
983 |
if (float64_eq(FT0, FT1, &FP_STATUS))
|
984 |
T0 = 1;
|
985 |
else
|
986 |
T0 = 0;
|
987 |
} |
988 |
|
989 |
void helper_cmpfne (void) |
990 |
{ |
991 |
if (float64_eq(FT0, FT1, &FP_STATUS))
|
992 |
T0 = 0;
|
993 |
else
|
994 |
T0 = 1;
|
995 |
} |
996 |
|
997 |
void helper_cmpflt (void) |
998 |
{ |
999 |
if (float64_lt(FT0, FT1, &FP_STATUS))
|
1000 |
T0 = 1;
|
1001 |
else
|
1002 |
T0 = 0;
|
1003 |
} |
1004 |
|
1005 |
void helper_cmpfle (void) |
1006 |
{ |
1007 |
if (float64_lt(FT0, FT1, &FP_STATUS))
|
1008 |
T0 = 1;
|
1009 |
else
|
1010 |
T0 = 0;
|
1011 |
} |
1012 |
|
1013 |
void helper_cmpfgt (void) |
1014 |
{ |
1015 |
if (float64_le(FT0, FT1, &FP_STATUS))
|
1016 |
T0 = 0;
|
1017 |
else
|
1018 |
T0 = 1;
|
1019 |
} |
1020 |
|
1021 |
void helper_cmpfge (void) |
1022 |
{ |
1023 |
if (float64_lt(FT0, FT1, &FP_STATUS))
|
1024 |
T0 = 0;
|
1025 |
else
|
1026 |
T0 = 1;
|
1027 |
} |
1028 |
|
1029 |
#if !defined (CONFIG_USER_ONLY)
|
1030 |
void helper_mfpr (int iprn) |
1031 |
{ |
1032 |
uint64_t val; |
1033 |
|
1034 |
if (cpu_alpha_mfpr(env, iprn, &val) == 0) |
1035 |
T0 = val; |
1036 |
} |
1037 |
|
1038 |
void helper_mtpr (int iprn) |
1039 |
{ |
1040 |
cpu_alpha_mtpr(env, iprn, T0, NULL);
|
1041 |
} |
1042 |
#endif
|
1043 |
|
1044 |
#if defined(HOST_SPARC) || defined(HOST_SPARC64)
|
1045 |
void helper_reset_FT0 (void) |
1046 |
{ |
1047 |
FT0 = 0;
|
1048 |
} |
1049 |
|
1050 |
void helper_reset_FT1 (void) |
1051 |
{ |
1052 |
FT1 = 0;
|
1053 |
} |
1054 |
|
1055 |
void helper_reset_FT2 (void) |
1056 |
{ |
1057 |
FT2 = 0;
|
1058 |
} |
1059 |
#endif
|
1060 |
|
1061 |
/*****************************************************************************/
|
1062 |
/* Softmmu support */
|
1063 |
#if !defined (CONFIG_USER_ONLY)
|
1064 |
|
1065 |
/* XXX: the two following helpers are pure hacks.
|
1066 |
* Hopefully, we emulate the PALcode, then we should never see
|
1067 |
* HW_LD / HW_ST instructions.
|
1068 |
*/
|
1069 |
void helper_ld_phys_to_virt (void) |
1070 |
{ |
1071 |
uint64_t tlb_addr, physaddr; |
1072 |
int index, mmu_idx;
|
1073 |
void *retaddr;
|
1074 |
|
1075 |
mmu_idx = cpu_mmu_index(env); |
1076 |
index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
1077 |
redo:
|
1078 |
tlb_addr = env->tlb_table[mmu_idx][index].addr_read; |
1079 |
if ((T0 & TARGET_PAGE_MASK) ==
|
1080 |
(tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { |
1081 |
physaddr = T0 + env->tlb_table[mmu_idx][index].addend; |
1082 |
} else {
|
1083 |
/* the page is not in the TLB : fill it */
|
1084 |
retaddr = GETPC(); |
1085 |
tlb_fill(T0, 0, mmu_idx, retaddr);
|
1086 |
goto redo;
|
1087 |
} |
1088 |
T0 = physaddr; |
1089 |
} |
1090 |
|
1091 |
void helper_st_phys_to_virt (void) |
1092 |
{ |
1093 |
uint64_t tlb_addr, physaddr; |
1094 |
int index, mmu_idx;
|
1095 |
void *retaddr;
|
1096 |
|
1097 |
mmu_idx = cpu_mmu_index(env); |
1098 |
index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
1099 |
redo:
|
1100 |
tlb_addr = env->tlb_table[mmu_idx][index].addr_write; |
1101 |
if ((T0 & TARGET_PAGE_MASK) ==
|
1102 |
(tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { |
1103 |
physaddr = T0 + env->tlb_table[mmu_idx][index].addend; |
1104 |
} else {
|
1105 |
/* the page is not in the TLB : fill it */
|
1106 |
retaddr = GETPC(); |
1107 |
tlb_fill(T0, 1, mmu_idx, retaddr);
|
1108 |
goto redo;
|
1109 |
} |
1110 |
T0 = physaddr; |
1111 |
} |
1112 |
|
1113 |
#define MMUSUFFIX _mmu
|
1114 |
|
1115 |
#define SHIFT 0 |
1116 |
#include "softmmu_template.h" |
1117 |
|
1118 |
#define SHIFT 1 |
1119 |
#include "softmmu_template.h" |
1120 |
|
1121 |
#define SHIFT 2 |
1122 |
#include "softmmu_template.h" |
1123 |
|
1124 |
#define SHIFT 3 |
1125 |
#include "softmmu_template.h" |
1126 |
|
1127 |
/* try to fill the TLB and return an exception if error. If retaddr is
|
1128 |
NULL, it means that the function was called in C code (i.e. not
|
1129 |
from generated code or from helper.c) */
|
1130 |
/* XXX: fix it to restore all registers */
|
1131 |
void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr) |
1132 |
{ |
1133 |
TranslationBlock *tb; |
1134 |
CPUState *saved_env; |
1135 |
unsigned long pc; |
1136 |
int ret;
|
1137 |
|
1138 |
/* XXX: hack to restore env in all cases, even if not called from
|
1139 |
generated code */
|
1140 |
saved_env = env; |
1141 |
env = cpu_single_env; |
1142 |
ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
|
1143 |
if (!likely(ret == 0)) { |
1144 |
if (likely(retaddr)) {
|
1145 |
/* now we have a real cpu fault */
|
1146 |
pc = (unsigned long)retaddr; |
1147 |
tb = tb_find_pc(pc); |
1148 |
if (likely(tb)) {
|
1149 |
/* the PC is inside the translated code. It means that we have
|
1150 |
a virtual CPU fault */
|
1151 |
cpu_restore_state(tb, env, pc, NULL);
|
1152 |
} |
1153 |
} |
1154 |
/* Exception index and error code are already set */
|
1155 |
cpu_loop_exit(); |
1156 |
} |
1157 |
env = saved_env; |
1158 |
} |
1159 |
|
1160 |
#endif
|