root / target-alpha / op_helper.c @ e14fe0a9
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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 "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 (uint32_t excp, uint32_t 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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void helper_amask (void) |
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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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T0 &= ~env->amask; |
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break;
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} |
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} |
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void helper_load_pcc (void) |
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{
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/* XXX: TODO */
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T0 = 0;
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} |
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void helper_load_implver (void) |
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{
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T0 = 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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void helper_load_irf (void) |
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{
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/* XXX: TODO */
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T0 = 0;
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} |
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void helper_set_irf (void) |
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{
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/* XXX: TODO */
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} |
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void helper_clear_irf (void) |
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{
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/* XXX: TODO */
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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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void helper_ctpop (void) |
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{
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int n;
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for (n = 0; T0 != 0; n++) |
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T0 = T0 ^ (T0 - 1);
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T0 = n; |
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} |
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void helper_ctlz (void) |
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{
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uint32_t op32; |
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int n;
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n = 0;
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if (!(T0 & 0xFFFFFFFF00000000ULL)) { |
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n += 32;
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T0 <<= 32;
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} |
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/* Make it easier for 32 bits hosts */
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op32 = T0 >> 32;
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if (!(op32 & 0xFFFF0000UL)) { |
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n += 16;
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op32 <<= 16;
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} |
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if (!(op32 & 0xFF000000UL)) { |
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n += 8;
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op32 <<= 8;
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} |
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if (!(op32 & 0xF0000000UL)) { |
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n += 4;
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op32 <<= 4;
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} |
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if (!(op32 & 0xC0000000UL)) { |
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n += 2;
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op32 <<= 2;
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} |
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if (!(op32 & 0x80000000UL)) { |
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n++; |
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op32 <<= 1;
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} |
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if (!(op32 & 0x80000000UL)) { |
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n++; |
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} |
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T0 = n; |
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} |
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void helper_cttz (void) |
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{
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uint32_t op32; |
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int n;
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n = 0;
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if (!(T0 & 0x00000000FFFFFFFFULL)) { |
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n += 32;
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T0 >>= 32;
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} |
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/* Make it easier for 32 bits hosts */
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op32 = T0; |
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if (!(op32 & 0x0000FFFFUL)) { |
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n += 16;
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op32 >>= 16;
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} |
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if (!(op32 & 0x000000FFUL)) { |
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n += 8;
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op32 >>= 8;
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} |
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if (!(op32 & 0x0000000FUL)) { |
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n += 4;
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op32 >>= 4;
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} |
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if (!(op32 & 0x00000003UL)) { |
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n += 2;
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op32 >>= 2;
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} |
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if (!(op32 & 0x00000001UL)) { |
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n++; |
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op32 >>= 1;
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} |
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if (!(op32 & 0x00000001UL)) { |
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n++; |
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} |
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T0 = n; |
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} |
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static 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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void helper_mskbl (void) |
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{
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T0 = byte_zap(T0, 0x01 << (T1 & 7)); |
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} |
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void helper_extbl (void) |
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{
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T0 >>= (T1 & 7) * 8; |
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T0 = byte_zap(T0, 0xFE);
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} |
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void helper_insbl (void) |
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{
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T0 <<= (T1 & 7) * 8; |
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T0 = byte_zap(T0, ~(0x01 << (T1 & 7))); |
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} |
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void helper_mskwl (void) |
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{
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T0 = byte_zap(T0, 0x03 << (T1 & 7)); |
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} |
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void helper_extwl (void) |
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{
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T0 >>= (T1 & 7) * 8; |
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T0 = byte_zap(T0, 0xFC);
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} |
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void helper_inswl (void) |
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{
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T0 <<= (T1 & 7) * 8; |
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T0 = byte_zap(T0, ~(0x03 << (T1 & 7))); |
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} |
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void helper_mskll (void) |
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{
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T0 = byte_zap(T0, 0x0F << (T1 & 7)); |
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} |
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|
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void helper_extll (void) |
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{
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T0 >>= (T1 & 7) * 8; |
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T0 = byte_zap(T0, 0xF0);
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} |
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void helper_insll (void) |
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{
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T0 <<= (T1 & 7) * 8; |
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T0 = byte_zap(T0, ~(0x0F << (T1 & 7))); |
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} |
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|
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void helper_zap (void) |
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{
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T0 = byte_zap(T0, T1); |
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} |
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|
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void helper_zapnot (void) |
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{
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T0 = byte_zap(T0, ~T1); |
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} |
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|
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void helper_mskql (void) |
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{
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T0 = byte_zap(T0, 0xFF << (T1 & 7)); |
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} |
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|
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void helper_extql (void) |
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{
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T0 >>= (T1 & 7) * 8; |
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T0 = byte_zap(T0, 0x00);
|
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} |
| 385 |
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void helper_insql (void) |
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{
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T0 <<= (T1 & 7) * 8; |
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T0 = byte_zap(T0, ~(0xFF << (T1 & 7))); |
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} |
| 391 |
|
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void helper_mskwh (void) |
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{
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T0 = byte_zap(T0, (0x03 << (T1 & 7)) >> 8); |
| 395 |
} |
| 396 |
|
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void helper_inswh (void) |
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{
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T0 >>= 64 - ((T1 & 7) * 8); |
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T0 = byte_zap(T0, ~((0x03 << (T1 & 7)) >> 8)); |
| 401 |
} |
| 402 |
|
| 403 |
void helper_extwh (void) |
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{
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T0 <<= 64 - ((T1 & 7) * 8); |
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T0 = byte_zap(T0, ~0x07);
|
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} |
| 408 |
|
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void helper_msklh (void) |
| 410 |
{
|
| 411 |
T0 = byte_zap(T0, (0x0F << (T1 & 7)) >> 8); |
| 412 |
} |
| 413 |
|
| 414 |
void helper_inslh (void) |
| 415 |
{
|
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T0 >>= 64 - ((T1 & 7) * 8); |
| 417 |
T0 = byte_zap(T0, ~((0x0F << (T1 & 7)) >> 8)); |
| 418 |
} |
| 419 |
|
| 420 |
void helper_extlh (void) |
| 421 |
{
|
| 422 |
T0 <<= 64 - ((T1 & 7) * 8); |
| 423 |
T0 = byte_zap(T0, ~0x0F);
|
| 424 |
} |
| 425 |
|
| 426 |
void helper_mskqh (void) |
| 427 |
{
|
| 428 |
T0 = byte_zap(T0, (0xFF << (T1 & 7)) >> 8); |
| 429 |
} |
| 430 |
|
| 431 |
void helper_insqh (void) |
| 432 |
{
|
| 433 |
T0 >>= 64 - ((T1 & 7) * 8); |
| 434 |
T0 = byte_zap(T0, ~((0xFF << (T1 & 7)) >> 8)); |
| 435 |
} |
| 436 |
|
| 437 |
void helper_extqh (void) |
| 438 |
{
|
| 439 |
T0 <<= 64 - ((T1 & 7) * 8); |
| 440 |
T0 = byte_zap(T0, 0x00);
|
| 441 |
} |
| 442 |
|
| 443 |
void helper_cmpbge (void) |
| 444 |
{
|
| 445 |
uint8_t opa, opb, res; |
| 446 |
int i;
|
| 447 |
|
| 448 |
res = 0;
|
| 449 |
for (i = 0; i < 7; i++) { |
| 450 |
opa = T0 >> (i * 8);
|
| 451 |
opb = T1 >> (i * 8);
|
| 452 |
if (opa >= opb)
|
| 453 |
res |= 1 << i;
|
| 454 |
} |
| 455 |
T0 = res; |
| 456 |
} |
| 457 |
|
| 458 |
void helper_cmov_fir (int freg) |
| 459 |
{
|
| 460 |
if (FT0 != 0) |
| 461 |
env->fir[freg] = FT1; |
| 462 |
} |
| 463 |
|
| 464 |
void helper_sqrts (void) |
| 465 |
{
|
| 466 |
FT0 = float32_sqrt(FT0, &FP_STATUS); |
| 467 |
} |
| 468 |
|
| 469 |
void helper_cpys (void) |
| 470 |
{
|
| 471 |
union {
|
| 472 |
double d;
|
| 473 |
uint64_t i; |
| 474 |
} p, q, r; |
| 475 |
|
| 476 |
p.d = FT0; |
| 477 |
q.d = FT1; |
| 478 |
r.i = p.i & 0x8000000000000000ULL;
|
| 479 |
r.i |= q.i & ~0x8000000000000000ULL;
|
| 480 |
FT0 = r.d; |
| 481 |
} |
| 482 |
|
| 483 |
void helper_cpysn (void) |
| 484 |
{
|
| 485 |
union {
|
| 486 |
double d;
|
| 487 |
uint64_t i; |
| 488 |
} p, q, r; |
| 489 |
|
| 490 |
p.d = FT0; |
| 491 |
q.d = FT1; |
| 492 |
r.i = (~p.i) & 0x8000000000000000ULL;
|
| 493 |
r.i |= q.i & ~0x8000000000000000ULL;
|
| 494 |
FT0 = r.d; |
| 495 |
} |
| 496 |
|
| 497 |
void helper_cpyse (void) |
| 498 |
{
|
| 499 |
union {
|
| 500 |
double d;
|
| 501 |
uint64_t i; |
| 502 |
} p, q, r; |
| 503 |
|
| 504 |
p.d = FT0; |
| 505 |
q.d = FT1; |
| 506 |
r.i = p.i & 0xFFF0000000000000ULL;
|
| 507 |
r.i |= q.i & ~0xFFF0000000000000ULL;
|
| 508 |
FT0 = r.d; |
| 509 |
} |
| 510 |
|
| 511 |
void helper_itofs (void) |
| 512 |
{
|
| 513 |
union {
|
| 514 |
double d;
|
| 515 |
uint64_t i; |
| 516 |
} p; |
| 517 |
|
| 518 |
p.d = FT0; |
| 519 |
FT0 = int64_to_float32(p.i, &FP_STATUS); |
| 520 |
} |
| 521 |
|
| 522 |
void helper_ftois (void) |
| 523 |
{
|
| 524 |
union {
|
| 525 |
double d;
|
| 526 |
uint64_t i; |
| 527 |
} p; |
| 528 |
|
| 529 |
p.i = float32_to_int64(FT0, &FP_STATUS); |
| 530 |
FT0 = p.d; |
| 531 |
} |
| 532 |
|
| 533 |
void helper_sqrtt (void) |
| 534 |
{
|
| 535 |
FT0 = float64_sqrt(FT0, &FP_STATUS); |
| 536 |
} |
| 537 |
|
| 538 |
void helper_cmptun (void) |
| 539 |
{
|
| 540 |
union {
|
| 541 |
double d;
|
| 542 |
uint64_t i; |
| 543 |
} p; |
| 544 |
|
| 545 |
p.i = 0;
|
| 546 |
if (float64_is_nan(FT0) || float64_is_nan(FT1))
|
| 547 |
p.i = 0x4000000000000000ULL;
|
| 548 |
FT0 = p.d; |
| 549 |
} |
| 550 |
|
| 551 |
void helper_cmpteq (void) |
| 552 |
{
|
| 553 |
union {
|
| 554 |
double d;
|
| 555 |
uint64_t i; |
| 556 |
} p; |
| 557 |
|
| 558 |
p.i = 0;
|
| 559 |
if (float64_eq(FT0, FT1, &FP_STATUS))
|
| 560 |
p.i = 0x4000000000000000ULL;
|
| 561 |
FT0 = p.d; |
| 562 |
} |
| 563 |
|
| 564 |
void helper_cmptle (void) |
| 565 |
{
|
| 566 |
union {
|
| 567 |
double d;
|
| 568 |
uint64_t i; |
| 569 |
} p; |
| 570 |
|
| 571 |
p.i = 0;
|
| 572 |
if (float64_le(FT0, FT1, &FP_STATUS))
|
| 573 |
p.i = 0x4000000000000000ULL;
|
| 574 |
FT0 = p.d; |
| 575 |
} |
| 576 |
|
| 577 |
void helper_cmptlt (void) |
| 578 |
{
|
| 579 |
union {
|
| 580 |
double d;
|
| 581 |
uint64_t i; |
| 582 |
} p; |
| 583 |
|
| 584 |
p.i = 0;
|
| 585 |
if (float64_lt(FT0, FT1, &FP_STATUS))
|
| 586 |
p.i = 0x4000000000000000ULL;
|
| 587 |
FT0 = p.d; |
| 588 |
} |
| 589 |
|
| 590 |
void helper_itoft (void) |
| 591 |
{
|
| 592 |
union {
|
| 593 |
double d;
|
| 594 |
uint64_t i; |
| 595 |
} p; |
| 596 |
|
| 597 |
p.d = FT0; |
| 598 |
FT0 = int64_to_float64(p.i, &FP_STATUS); |
| 599 |
} |
| 600 |
|
| 601 |
void helper_ftoit (void) |
| 602 |
{
|
| 603 |
union {
|
| 604 |
double d;
|
| 605 |
uint64_t i; |
| 606 |
} p; |
| 607 |
|
| 608 |
p.i = float64_to_int64(FT0, &FP_STATUS); |
| 609 |
FT0 = p.d; |
| 610 |
} |
| 611 |
|
| 612 |
static int vaxf_is_valid (float ff) |
| 613 |
{
|
| 614 |
union {
|
| 615 |
float f;
|
| 616 |
uint32_t i; |
| 617 |
} p; |
| 618 |
uint32_t exp, mant; |
| 619 |
|
| 620 |
p.f = ff; |
| 621 |
exp = (p.i >> 23) & 0xFF; |
| 622 |
mant = p.i & 0x007FFFFF;
|
| 623 |
if (exp == 0 && ((p.i & 0x80000000) || mant != 0)) { |
| 624 |
/* Reserved operands / Dirty zero */
|
| 625 |
return 0; |
| 626 |
} |
| 627 |
|
| 628 |
return 1; |
| 629 |
} |
| 630 |
|
| 631 |
static float vaxf_to_ieee32 (float ff) |
| 632 |
{
|
| 633 |
union {
|
| 634 |
float f;
|
| 635 |
uint32_t i; |
| 636 |
} p; |
| 637 |
uint32_t exp; |
| 638 |
|
| 639 |
p.f = ff; |
| 640 |
exp = (p.i >> 23) & 0xFF; |
| 641 |
if (exp < 3) { |
| 642 |
/* Underflow */
|
| 643 |
p.f = 0.0; |
| 644 |
} else {
|
| 645 |
p.f *= 0.25; |
| 646 |
} |
| 647 |
|
| 648 |
return p.f;
|
| 649 |
} |
| 650 |
|
| 651 |
static float ieee32_to_vaxf (float fi) |
| 652 |
{
|
| 653 |
union {
|
| 654 |
float f;
|
| 655 |
uint32_t i; |
| 656 |
} p; |
| 657 |
uint32_t exp, mant; |
| 658 |
|
| 659 |
p.f = fi; |
| 660 |
exp = (p.i >> 23) & 0xFF; |
| 661 |
mant = p.i & 0x007FFFFF;
|
| 662 |
if (exp == 255) { |
| 663 |
/* NaN or infinity */
|
| 664 |
p.i = 1;
|
| 665 |
} else if (exp == 0) { |
| 666 |
if (mant == 0) { |
| 667 |
/* Zero */
|
| 668 |
p.i = 0;
|
| 669 |
} else {
|
| 670 |
/* Denormalized */
|
| 671 |
p.f *= 2.0; |
| 672 |
} |
| 673 |
} else {
|
| 674 |
if (exp >= 253) { |
| 675 |
/* Overflow */
|
| 676 |
p.i = 1;
|
| 677 |
} else {
|
| 678 |
p.f *= 4.0; |
| 679 |
} |
| 680 |
} |
| 681 |
|
| 682 |
return p.f;
|
| 683 |
} |
| 684 |
|
| 685 |
void helper_addf (void) |
| 686 |
{
|
| 687 |
float ft0, ft1, ft2;
|
| 688 |
|
| 689 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
| 690 |
/* XXX: TODO */
|
| 691 |
} |
| 692 |
ft0 = vaxf_to_ieee32(FT0); |
| 693 |
ft1 = vaxf_to_ieee32(FT1); |
| 694 |
ft2 = float32_add(ft0, ft1, &FP_STATUS); |
| 695 |
FT0 = ieee32_to_vaxf(ft2); |
| 696 |
} |
| 697 |
|
| 698 |
void helper_subf (void) |
| 699 |
{
|
| 700 |
float ft0, ft1, ft2;
|
| 701 |
|
| 702 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
| 703 |
/* XXX: TODO */
|
| 704 |
} |
| 705 |
ft0 = vaxf_to_ieee32(FT0); |
| 706 |
ft1 = vaxf_to_ieee32(FT1); |
| 707 |
ft2 = float32_sub(ft0, ft1, &FP_STATUS); |
| 708 |
FT0 = ieee32_to_vaxf(ft2); |
| 709 |
} |
| 710 |
|
| 711 |
void helper_mulf (void) |
| 712 |
{
|
| 713 |
float ft0, ft1, ft2;
|
| 714 |
|
| 715 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
| 716 |
/* XXX: TODO */
|
| 717 |
} |
| 718 |
ft0 = vaxf_to_ieee32(FT0); |
| 719 |
ft1 = vaxf_to_ieee32(FT1); |
| 720 |
ft2 = float32_mul(ft0, ft1, &FP_STATUS); |
| 721 |
FT0 = ieee32_to_vaxf(ft2); |
| 722 |
} |
| 723 |
|
| 724 |
void helper_divf (void) |
| 725 |
{
|
| 726 |
float ft0, ft1, ft2;
|
| 727 |
|
| 728 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
| 729 |
/* XXX: TODO */
|
| 730 |
} |
| 731 |
ft0 = vaxf_to_ieee32(FT0); |
| 732 |
ft1 = vaxf_to_ieee32(FT1); |
| 733 |
ft2 = float32_div(ft0, ft1, &FP_STATUS); |
| 734 |
FT0 = ieee32_to_vaxf(ft2); |
| 735 |
} |
| 736 |
|
| 737 |
void helper_sqrtf (void) |
| 738 |
{
|
| 739 |
float ft0, ft1;
|
| 740 |
|
| 741 |
if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
|
| 742 |
/* XXX: TODO */
|
| 743 |
} |
| 744 |
ft0 = vaxf_to_ieee32(FT0); |
| 745 |
ft1 = float32_sqrt(ft0, &FP_STATUS); |
| 746 |
FT0 = ieee32_to_vaxf(ft1); |
| 747 |
} |
| 748 |
|
| 749 |
void helper_itoff (void) |
| 750 |
{
|
| 751 |
/* XXX: TODO */
|
| 752 |
} |
| 753 |
|
| 754 |
static int vaxg_is_valid (double ff) |
| 755 |
{
|
| 756 |
union {
|
| 757 |
double f;
|
| 758 |
uint64_t i; |
| 759 |
} p; |
| 760 |
uint64_t exp, mant; |
| 761 |
|
| 762 |
p.f = ff; |
| 763 |
exp = (p.i >> 52) & 0x7FF; |
| 764 |
mant = p.i & 0x000FFFFFFFFFFFFFULL;
|
| 765 |
if (exp == 0 && ((p.i & 0x8000000000000000ULL) || mant != 0)) { |
| 766 |
/* Reserved operands / Dirty zero */
|
| 767 |
return 0; |
| 768 |
} |
| 769 |
|
| 770 |
return 1; |
| 771 |
} |
| 772 |
|
| 773 |
static double vaxg_to_ieee64 (double fg) |
| 774 |
{
|
| 775 |
union {
|
| 776 |
double f;
|
| 777 |
uint64_t i; |
| 778 |
} p; |
| 779 |
uint32_t exp; |
| 780 |
|
| 781 |
p.f = fg; |
| 782 |
exp = (p.i >> 52) & 0x7FF; |
| 783 |
if (exp < 3) { |
| 784 |
/* Underflow */
|
| 785 |
p.f = 0.0; |
| 786 |
} else {
|
| 787 |
p.f *= 0.25; |
| 788 |
} |
| 789 |
|
| 790 |
return p.f;
|
| 791 |
} |
| 792 |
|
| 793 |
static double ieee64_to_vaxg (double fi) |
| 794 |
{
|
| 795 |
union {
|
| 796 |
double f;
|
| 797 |
uint64_t i; |
| 798 |
} p; |
| 799 |
uint64_t mant; |
| 800 |
uint32_t exp; |
| 801 |
|
| 802 |
p.f = fi; |
| 803 |
exp = (p.i >> 52) & 0x7FF; |
| 804 |
mant = p.i & 0x000FFFFFFFFFFFFFULL;
|
| 805 |
if (exp == 255) { |
| 806 |
/* NaN or infinity */
|
| 807 |
p.i = 1; /* VAX dirty zero */ |
| 808 |
} else if (exp == 0) { |
| 809 |
if (mant == 0) { |
| 810 |
/* Zero */
|
| 811 |
p.i = 0;
|
| 812 |
} else {
|
| 813 |
/* Denormalized */
|
| 814 |
p.f *= 2.0; |
| 815 |
} |
| 816 |
} else {
|
| 817 |
if (exp >= 2045) { |
| 818 |
/* Overflow */
|
| 819 |
p.i = 1; /* VAX dirty zero */ |
| 820 |
} else {
|
| 821 |
p.f *= 4.0; |
| 822 |
} |
| 823 |
} |
| 824 |
|
| 825 |
return p.f;
|
| 826 |
} |
| 827 |
|
| 828 |
void helper_addg (void) |
| 829 |
{
|
| 830 |
double ft0, ft1, ft2;
|
| 831 |
|
| 832 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
| 833 |
/* XXX: TODO */
|
| 834 |
} |
| 835 |
ft0 = vaxg_to_ieee64(FT0); |
| 836 |
ft1 = vaxg_to_ieee64(FT1); |
| 837 |
ft2 = float64_add(ft0, ft1, &FP_STATUS); |
| 838 |
FT0 = ieee64_to_vaxg(ft2); |
| 839 |
} |
| 840 |
|
| 841 |
void helper_subg (void) |
| 842 |
{
|
| 843 |
double ft0, ft1, ft2;
|
| 844 |
|
| 845 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
| 846 |
/* XXX: TODO */
|
| 847 |
} |
| 848 |
ft0 = vaxg_to_ieee64(FT0); |
| 849 |
ft1 = vaxg_to_ieee64(FT1); |
| 850 |
ft2 = float64_sub(ft0, ft1, &FP_STATUS); |
| 851 |
FT0 = ieee64_to_vaxg(ft2); |
| 852 |
} |
| 853 |
|
| 854 |
void helper_mulg (void) |
| 855 |
{
|
| 856 |
double ft0, ft1, ft2;
|
| 857 |
|
| 858 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
| 859 |
/* XXX: TODO */
|
| 860 |
} |
| 861 |
ft0 = vaxg_to_ieee64(FT0); |
| 862 |
ft1 = vaxg_to_ieee64(FT1); |
| 863 |
ft2 = float64_mul(ft0, ft1, &FP_STATUS); |
| 864 |
FT0 = ieee64_to_vaxg(ft2); |
| 865 |
} |
| 866 |
|
| 867 |
void helper_divg (void) |
| 868 |
{
|
| 869 |
double ft0, ft1, ft2;
|
| 870 |
|
| 871 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
| 872 |
/* XXX: TODO */
|
| 873 |
} |
| 874 |
ft0 = vaxg_to_ieee64(FT0); |
| 875 |
ft1 = vaxg_to_ieee64(FT1); |
| 876 |
ft2 = float64_div(ft0, ft1, &FP_STATUS); |
| 877 |
FT0 = ieee64_to_vaxg(ft2); |
| 878 |
} |
| 879 |
|
| 880 |
void helper_sqrtg (void) |
| 881 |
{
|
| 882 |
double ft0, ft1;
|
| 883 |
|
| 884 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
| 885 |
/* XXX: TODO */
|
| 886 |
} |
| 887 |
ft0 = vaxg_to_ieee64(FT0); |
| 888 |
ft1 = float64_sqrt(ft0, &FP_STATUS); |
| 889 |
FT0 = ieee64_to_vaxg(ft1); |
| 890 |
} |
| 891 |
|
| 892 |
void helper_cmpgeq (void) |
| 893 |
{
|
| 894 |
union {
|
| 895 |
double d;
|
| 896 |
uint64_t u; |
| 897 |
} p; |
| 898 |
double ft0, ft1;
|
| 899 |
|
| 900 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
| 901 |
/* XXX: TODO */
|
| 902 |
} |
| 903 |
ft0 = vaxg_to_ieee64(FT0); |
| 904 |
ft1 = vaxg_to_ieee64(FT1); |
| 905 |
p.u = 0;
|
| 906 |
if (float64_eq(ft0, ft1, &FP_STATUS))
|
| 907 |
p.u = 0x4000000000000000ULL;
|
| 908 |
FT0 = p.d; |
| 909 |
} |
| 910 |
|
| 911 |
void helper_cmpglt (void) |
| 912 |
{
|
| 913 |
union {
|
| 914 |
double d;
|
| 915 |
uint64_t u; |
| 916 |
} p; |
| 917 |
double ft0, ft1;
|
| 918 |
|
| 919 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
| 920 |
/* XXX: TODO */
|
| 921 |
} |
| 922 |
ft0 = vaxg_to_ieee64(FT0); |
| 923 |
ft1 = vaxg_to_ieee64(FT1); |
| 924 |
p.u = 0;
|
| 925 |
if (float64_lt(ft0, ft1, &FP_STATUS))
|
| 926 |
p.u = 0x4000000000000000ULL;
|
| 927 |
FT0 = p.d; |
| 928 |
} |
| 929 |
|
| 930 |
void helper_cmpgle (void) |
| 931 |
{
|
| 932 |
union {
|
| 933 |
double d;
|
| 934 |
uint64_t u; |
| 935 |
} p; |
| 936 |
double ft0, ft1;
|
| 937 |
|
| 938 |
if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
|
| 939 |
/* XXX: TODO */
|
| 940 |
} |
| 941 |
ft0 = vaxg_to_ieee64(FT0); |
| 942 |
ft1 = vaxg_to_ieee64(FT1); |
| 943 |
p.u = 0;
|
| 944 |
if (float64_le(ft0, ft1, &FP_STATUS))
|
| 945 |
p.u = 0x4000000000000000ULL;
|
| 946 |
FT0 = p.d; |
| 947 |
} |
| 948 |
|
| 949 |
void helper_cvtqs (void) |
| 950 |
{
|
| 951 |
union {
|
| 952 |
double d;
|
| 953 |
uint64_t u; |
| 954 |
} p; |
| 955 |
|
| 956 |
p.d = FT0; |
| 957 |
FT0 = (float)p.u;
|
| 958 |
} |
| 959 |
|
| 960 |
void helper_cvttq (void) |
| 961 |
{
|
| 962 |
union {
|
| 963 |
double d;
|
| 964 |
uint64_t u; |
| 965 |
} p; |
| 966 |
|
| 967 |
p.u = FT0; |
| 968 |
FT0 = p.d; |
| 969 |
} |
| 970 |
|
| 971 |
void helper_cvtqt (void) |
| 972 |
{
|
| 973 |
union {
|
| 974 |
double d;
|
| 975 |
uint64_t u; |
| 976 |
} p; |
| 977 |
|
| 978 |
p.d = FT0; |
| 979 |
FT0 = p.u; |
| 980 |
} |
| 981 |
|
| 982 |
void helper_cvtqf (void) |
| 983 |
{
|
| 984 |
union {
|
| 985 |
double d;
|
| 986 |
uint64_t u; |
| 987 |
} p; |
| 988 |
|
| 989 |
p.d = FT0; |
| 990 |
FT0 = ieee32_to_vaxf(p.u); |
| 991 |
} |
| 992 |
|
| 993 |
void helper_cvtgf (void) |
| 994 |
{
|
| 995 |
double ft0;
|
| 996 |
|
| 997 |
ft0 = vaxg_to_ieee64(FT0); |
| 998 |
FT0 = ieee32_to_vaxf(ft0); |
| 999 |
} |
| 1000 |
|
| 1001 |
void helper_cvtgd (void) |
| 1002 |
{
|
| 1003 |
/* XXX: TODO */
|
| 1004 |
} |
| 1005 |
|
| 1006 |
void helper_cvtgq (void) |
| 1007 |
{
|
| 1008 |
union {
|
| 1009 |
double d;
|
| 1010 |
uint64_t u; |
| 1011 |
} p; |
| 1012 |
|
| 1013 |
p.u = vaxg_to_ieee64(FT0); |
| 1014 |
FT0 = p.d; |
| 1015 |
} |
| 1016 |
|
| 1017 |
void helper_cvtqg (void) |
| 1018 |
{
|
| 1019 |
union {
|
| 1020 |
double d;
|
| 1021 |
uint64_t u; |
| 1022 |
} p; |
| 1023 |
|
| 1024 |
p.d = FT0; |
| 1025 |
FT0 = ieee64_to_vaxg(p.u); |
| 1026 |
} |
| 1027 |
|
| 1028 |
void helper_cvtdg (void) |
| 1029 |
{
|
| 1030 |
/* XXX: TODO */
|
| 1031 |
} |
| 1032 |
|
| 1033 |
void helper_cvtlq (void) |
| 1034 |
{
|
| 1035 |
union {
|
| 1036 |
double d;
|
| 1037 |
uint64_t u; |
| 1038 |
} p, q; |
| 1039 |
|
| 1040 |
p.d = FT0; |
| 1041 |
q.u = (p.u >> 29) & 0x3FFFFFFF; |
| 1042 |
q.u |= (p.u >> 32);
|
| 1043 |
q.u = (int64_t)((int32_t)q.u); |
| 1044 |
FT0 = q.d; |
| 1045 |
} |
| 1046 |
|
| 1047 |
static inline void __helper_cvtql (int s, int v) |
| 1048 |
{
|
| 1049 |
union {
|
| 1050 |
double d;
|
| 1051 |
uint64_t u; |
| 1052 |
} p, q; |
| 1053 |
|
| 1054 |
p.d = FT0; |
| 1055 |
q.u = ((uint64_t)(p.u & 0xC0000000)) << 32; |
| 1056 |
q.u |= ((uint64_t)(p.u & 0x7FFFFFFF)) << 29; |
| 1057 |
FT0 = q.d; |
| 1058 |
if (v && (int64_t)((int32_t)p.u) != (int64_t)p.u) {
|
| 1059 |
helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW); |
| 1060 |
} |
| 1061 |
if (s) {
|
| 1062 |
/* TODO */
|
| 1063 |
} |
| 1064 |
} |
| 1065 |
|
| 1066 |
void helper_cvtql (void) |
| 1067 |
{
|
| 1068 |
__helper_cvtql(0, 0); |
| 1069 |
} |
| 1070 |
|
| 1071 |
void helper_cvtqlv (void) |
| 1072 |
{
|
| 1073 |
__helper_cvtql(0, 1); |
| 1074 |
} |
| 1075 |
|
| 1076 |
void helper_cvtqlsv (void) |
| 1077 |
{
|
| 1078 |
__helper_cvtql(1, 1); |
| 1079 |
} |
| 1080 |
|
| 1081 |
void helper_cmpfeq (void) |
| 1082 |
{
|
| 1083 |
if (float64_eq(FT0, FT1, &FP_STATUS))
|
| 1084 |
T0 = 1;
|
| 1085 |
else
|
| 1086 |
T0 = 0;
|
| 1087 |
} |
| 1088 |
|
| 1089 |
void helper_cmpfne (void) |
| 1090 |
{
|
| 1091 |
if (float64_eq(FT0, FT1, &FP_STATUS))
|
| 1092 |
T0 = 0;
|
| 1093 |
else
|
| 1094 |
T0 = 1;
|
| 1095 |
} |
| 1096 |
|
| 1097 |
void helper_cmpflt (void) |
| 1098 |
{
|
| 1099 |
if (float64_lt(FT0, FT1, &FP_STATUS))
|
| 1100 |
T0 = 1;
|
| 1101 |
else
|
| 1102 |
T0 = 0;
|
| 1103 |
} |
| 1104 |
|
| 1105 |
void helper_cmpfle (void) |
| 1106 |
{
|
| 1107 |
if (float64_lt(FT0, FT1, &FP_STATUS))
|
| 1108 |
T0 = 1;
|
| 1109 |
else
|
| 1110 |
T0 = 0;
|
| 1111 |
} |
| 1112 |
|
| 1113 |
void helper_cmpfgt (void) |
| 1114 |
{
|
| 1115 |
if (float64_le(FT0, FT1, &FP_STATUS))
|
| 1116 |
T0 = 0;
|
| 1117 |
else
|
| 1118 |
T0 = 1;
|
| 1119 |
} |
| 1120 |
|
| 1121 |
void helper_cmpfge (void) |
| 1122 |
{
|
| 1123 |
if (float64_lt(FT0, FT1, &FP_STATUS))
|
| 1124 |
T0 = 0;
|
| 1125 |
else
|
| 1126 |
T0 = 1;
|
| 1127 |
} |
| 1128 |
|
| 1129 |
#if !defined (CONFIG_USER_ONLY)
|
| 1130 |
void helper_mfpr (int iprn) |
| 1131 |
{
|
| 1132 |
uint64_t val; |
| 1133 |
|
| 1134 |
if (cpu_alpha_mfpr(env, iprn, &val) == 0) |
| 1135 |
T0 = val; |
| 1136 |
} |
| 1137 |
|
| 1138 |
void helper_mtpr (int iprn) |
| 1139 |
{
|
| 1140 |
cpu_alpha_mtpr(env, iprn, T0, NULL);
|
| 1141 |
} |
| 1142 |
#endif
|
| 1143 |
|
| 1144 |
/*****************************************************************************/
|
| 1145 |
/* Softmmu support */
|
| 1146 |
#if !defined (CONFIG_USER_ONLY)
|
| 1147 |
|
| 1148 |
#define GETPC() (__builtin_return_address(0)) |
| 1149 |
|
| 1150 |
/* XXX: the two following helpers are pure hacks.
|
| 1151 |
* Hopefully, we emulate the PALcode, then we should never see
|
| 1152 |
* HW_LD / HW_ST instructions.
|
| 1153 |
*/
|
| 1154 |
void helper_ld_phys_to_virt (void) |
| 1155 |
{
|
| 1156 |
uint64_t tlb_addr, physaddr; |
| 1157 |
int index, mmu_idx;
|
| 1158 |
void *retaddr;
|
| 1159 |
|
| 1160 |
mmu_idx = cpu_mmu_index(env); |
| 1161 |
index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
| 1162 |
redo:
|
| 1163 |
tlb_addr = env->tlb_table[mmu_idx][index].addr_read; |
| 1164 |
if ((T0 & TARGET_PAGE_MASK) ==
|
| 1165 |
(tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
|
| 1166 |
physaddr = T0 + env->tlb_table[mmu_idx][index].addend; |
| 1167 |
} else {
|
| 1168 |
/* the page is not in the TLB : fill it */
|
| 1169 |
retaddr = GETPC(); |
| 1170 |
tlb_fill(T0, 0, mmu_idx, retaddr);
|
| 1171 |
goto redo;
|
| 1172 |
} |
| 1173 |
T0 = physaddr; |
| 1174 |
} |
| 1175 |
|
| 1176 |
void helper_st_phys_to_virt (void) |
| 1177 |
{
|
| 1178 |
uint64_t tlb_addr, physaddr; |
| 1179 |
int index, mmu_idx;
|
| 1180 |
void *retaddr;
|
| 1181 |
|
| 1182 |
mmu_idx = cpu_mmu_index(env); |
| 1183 |
index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
| 1184 |
redo:
|
| 1185 |
tlb_addr = env->tlb_table[mmu_idx][index].addr_write; |
| 1186 |
if ((T0 & TARGET_PAGE_MASK) ==
|
| 1187 |
(tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
|
| 1188 |
physaddr = T0 + env->tlb_table[mmu_idx][index].addend; |
| 1189 |
} else {
|
| 1190 |
/* the page is not in the TLB : fill it */
|
| 1191 |
retaddr = GETPC(); |
| 1192 |
tlb_fill(T0, 1, mmu_idx, retaddr);
|
| 1193 |
goto redo;
|
| 1194 |
} |
| 1195 |
T0 = physaddr; |
| 1196 |
} |
| 1197 |
|
| 1198 |
#define MMUSUFFIX _mmu
|
| 1199 |
|
| 1200 |
#define SHIFT 0 |
| 1201 |
#include "softmmu_template.h" |
| 1202 |
|
| 1203 |
#define SHIFT 1 |
| 1204 |
#include "softmmu_template.h" |
| 1205 |
|
| 1206 |
#define SHIFT 2 |
| 1207 |
#include "softmmu_template.h" |
| 1208 |
|
| 1209 |
#define SHIFT 3 |
| 1210 |
#include "softmmu_template.h" |
| 1211 |
|
| 1212 |
/* try to fill the TLB and return an exception if error. If retaddr is
|
| 1213 |
NULL, it means that the function was called in C code (i.e. not
|
| 1214 |
from generated code or from helper.c) */
|
| 1215 |
/* XXX: fix it to restore all registers */
|
| 1216 |
void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr) |
| 1217 |
{
|
| 1218 |
TranslationBlock *tb; |
| 1219 |
CPUState *saved_env; |
| 1220 |
target_phys_addr_t pc; |
| 1221 |
int ret;
|
| 1222 |
|
| 1223 |
/* XXX: hack to restore env in all cases, even if not called from
|
| 1224 |
generated code */
|
| 1225 |
saved_env = env; |
| 1226 |
env = cpu_single_env; |
| 1227 |
ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
|
| 1228 |
if (!likely(ret == 0)) { |
| 1229 |
if (likely(retaddr)) {
|
| 1230 |
/* now we have a real cpu fault */
|
| 1231 |
pc = (target_phys_addr_t)retaddr; |
| 1232 |
tb = tb_find_pc(pc); |
| 1233 |
if (likely(tb)) {
|
| 1234 |
/* the PC is inside the translated code. It means that we have
|
| 1235 |
a virtual CPU fault */
|
| 1236 |
cpu_restore_state(tb, env, pc, NULL);
|
| 1237 |
} |
| 1238 |
} |
| 1239 |
/* Exception index and error code are already set */
|
| 1240 |
cpu_loop_exit(); |
| 1241 |
} |
| 1242 |
env = saved_env; |
| 1243 |
} |
| 1244 |
|
| 1245 |
#endif
|