/*
* Software MMU support
*
* Generate helpers used by TCG for qemu_ld/st ops and code load
* functions.
*
* Included from target op helpers and exec.c.
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see .
*/
#include "qemu/timer.h"
#include "exec/address-spaces.h"
#include "exec/memory.h"
#define DATA_SIZE (1 << SHIFT)
#if DATA_SIZE == 8
#define SUFFIX q
#define LSUFFIX q
#define SDATA_TYPE int64_t
#define DATA_TYPE uint64_t
#elif DATA_SIZE == 4
#define SUFFIX l
#define LSUFFIX l
#define SDATA_TYPE int32_t
#define DATA_TYPE uint32_t
#elif DATA_SIZE == 2
#define SUFFIX w
#define LSUFFIX uw
#define SDATA_TYPE int16_t
#define DATA_TYPE uint16_t
#elif DATA_SIZE == 1
#define SUFFIX b
#define LSUFFIX ub
#define SDATA_TYPE int8_t
#define DATA_TYPE uint8_t
#else
#error unsupported data size
#endif
/* For the benefit of TCG generated code, we want to avoid the complication
of ABI-specific return type promotion and always return a value extended
to the register size of the host. This is tcg_target_long, except in the
case of a 32-bit host and 64-bit data, and for that we always have
uint64_t. Don't bother with this widened value for SOFTMMU_CODE_ACCESS. */
#if defined(SOFTMMU_CODE_ACCESS) || DATA_SIZE == 8
# define WORD_TYPE DATA_TYPE
# define USUFFIX SUFFIX
#else
# define WORD_TYPE tcg_target_ulong
# define USUFFIX glue(u, SUFFIX)
# define SSUFFIX glue(s, SUFFIX)
#endif
#ifdef SOFTMMU_CODE_ACCESS
#define READ_ACCESS_TYPE MMU_INST_FETCH
#define ADDR_READ addr_code
#else
#define READ_ACCESS_TYPE MMU_DATA_LOAD
#define ADDR_READ addr_read
#endif
#if DATA_SIZE == 8
# define BSWAP(X) bswap64(X)
#elif DATA_SIZE == 4
# define BSWAP(X) bswap32(X)
#elif DATA_SIZE == 2
# define BSWAP(X) bswap16(X)
#else
# define BSWAP(X) (X)
#endif
#ifdef TARGET_WORDS_BIGENDIAN
# define TGT_BE(X) (X)
# define TGT_LE(X) BSWAP(X)
#else
# define TGT_BE(X) BSWAP(X)
# define TGT_LE(X) (X)
#endif
#if DATA_SIZE == 1
# define helper_le_ld_name glue(glue(helper_ret_ld, USUFFIX), MMUSUFFIX)
# define helper_be_ld_name helper_le_ld_name
# define helper_le_lds_name glue(glue(helper_ret_ld, SSUFFIX), MMUSUFFIX)
# define helper_be_lds_name helper_le_lds_name
# define helper_le_st_name glue(glue(helper_ret_st, SUFFIX), MMUSUFFIX)
# define helper_be_st_name helper_le_st_name
#else
# define helper_le_ld_name glue(glue(helper_le_ld, USUFFIX), MMUSUFFIX)
# define helper_be_ld_name glue(glue(helper_be_ld, USUFFIX), MMUSUFFIX)
# define helper_le_lds_name glue(glue(helper_le_ld, SSUFFIX), MMUSUFFIX)
# define helper_be_lds_name glue(glue(helper_be_ld, SSUFFIX), MMUSUFFIX)
# define helper_le_st_name glue(glue(helper_le_st, SUFFIX), MMUSUFFIX)
# define helper_be_st_name glue(glue(helper_be_st, SUFFIX), MMUSUFFIX)
#endif
#ifdef TARGET_WORDS_BIGENDIAN
# define helper_te_ld_name helper_be_ld_name
# define helper_te_st_name helper_be_st_name
#else
# define helper_te_ld_name helper_le_ld_name
# define helper_te_st_name helper_le_st_name
#endif
/* macro to check the victim tlb */
#define VICTIM_TLB_HIT(ty) \
({ \
/* we are about to do a page table walk. our last hope is the \
* victim tlb. try to refill from the victim tlb before walking the \
* page table. */ \
int vidx; \
CPUIOTLBEntry tmpiotlb; \
CPUTLBEntry tmptlb; \
for (vidx = CPU_VTLB_SIZE-1; vidx >= 0; --vidx) { \
if (env->tlb_v_table[mmu_idx][vidx].ty == (addr & TARGET_PAGE_MASK)) {\
/* found entry in victim tlb, swap tlb and iotlb */ \
tmptlb = env->tlb_table[mmu_idx][index]; \
env->tlb_table[mmu_idx][index] = env->tlb_v_table[mmu_idx][vidx]; \
env->tlb_v_table[mmu_idx][vidx] = tmptlb; \
tmpiotlb = env->iotlb[mmu_idx][index]; \
env->iotlb[mmu_idx][index] = env->iotlb_v[mmu_idx][vidx]; \
env->iotlb_v[mmu_idx][vidx] = tmpiotlb; \
break; \
}
/*
// Copyright (c) 2010-2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/
#include <rte_mbuf.h>
#include <rte_cycles.h>
#include "task_base.h"
#include "task_init.h"
#include "thread_generic.h"
struct task_tsc {
struct task_base base;
};
static int handle_bulk_tsc(struct task_base *tbase, struct rte_mbuf **mbufs, uint16_t n_pkts)
{
struct task_tsc *task = (struct task_tsc *)tbase;
const uint64_t rx_tsc = rte_rdtsc();
for (uint16_t j = 0; j < n_pkts; ++j)
mbufs[j]->udata64 = rx_tsc;
return task->base.tx_pkt(&task->base, mbufs, n_pkts, NULL);
}
static struct task_init task_init = {
.mode_str = "tsc",
.init = NULL,
.handle = handle_bulk_tsc,
.flag_features = TASK_FEATURE_NEVER_DISCARDS|TASK_FEATURE_TXQ_FLAGS_NOOFFLOADS|TASK_FEATURE_THROUGHPUT_OPT,
.size = sizeof(struct task_tsc),
};
__attribute__((constructor)) static void reg_task_nop(void)
{
reg_task(&task_init);
}