Line data    Source code

       1              : /**
       2              :  * Copyright (c) 2025 Huawei Technologies Co., Ltd.
       3              :  * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
       4              :  * CANN Open Software License Agreement Version 2.0 (the "License").
       5              :  * Please refer to the License for details. You may not use this file except in compliance with the License.
       6              :  * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
       7              :  * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
       8              :  * See LICENSE in the root of the software repository for the full text of the License.
       9              :  */
      10              : 
      11              : #include "scd_memory.h"
      12              : #include <stdlib.h>
      13              : #include "scd_log.h"
      14              : #include "scd_memory_remote.h"
      15              : #include "scd_memory_local.h"
      16              : 
      17              : typedef struct {
      18              :     size_t (*read)(uintptr_t addr, void *dst, size_t size);
      19              : } ScdMemoryHandler;
      20              : 
      21              : static const ScdMemoryHandler SCD_MEMORY_HANDLE = {
      22              :     ScdMemoryRemoteRead
      23              : };
      24              : 
      25          450 : void ScdMemoryInitLocal(ScdMemory *memory)
      26              : {
      27          450 :     memory->handlers.read = ScdMemoryLocalRead;
      28          450 :     memory->data = 0;
      29          450 :     memory->size = 0;
      30          450 : }
      31              : 
      32            0 : void ScdMemoryInitRemote(ScdMemory *memory)
      33              : {
      34            0 :     memory->handlers.read = ScdMemoryRemoteRead;
      35            0 :     memory->data = 0;
      36            0 :     memory->size = 0;
      37            0 : }
      38              : 
      39        50048 : size_t ScdMemoryRead(ScdMemory *memory, uintptr_t addr, void *dst, size_t size)
      40              : {
      41        50048 :     if (memory == NULL) {
      42        49872 :         return SCD_MEMORY_HANDLE.read(addr, dst, size);
      43              :     }
      44          176 :     if (addr < memory->data || addr >= memory->data + memory->size) {
      45           16 :         SCD_DLOG_ERR("Invalid address, addr 0x%llx out of memory range[0x%llx, 0x%llx],",
      46              :             addr, memory->data, memory->data + memory->size);
      47           16 :         return 0;
      48              :     }
      49          160 :     return memory->handlers.read(addr, dst, size);
      50              : }
      51              : 
      52           64 : void *ScdMemoryGetAddr(ScdMemory *memory, uintptr_t offset, size_t size)
      53              : {
      54           64 :     if (offset + size > memory->size) {
      55           32 :         SCD_DLOG_ERR("read memory failed, read size is out of memory range.");
      56           32 :         return NULL;
      57              :     }
      58           32 :     return (void *)(memory->data + offset);
      59              : }
      60              : 
      61            3 : size_t ScdMemoryReadString(ScdMemory *memory, uintptr_t addr, char *dst, size_t size)
      62              : {
      63            3 :     if ((memory == NULL) || (dst == NULL) || (size <= 1U)) {
      64            3 :         return 0;
      65              :     }
      66              : 
      67            0 :     size_t i = 0;
      68            0 :     while (i < size) {
      69            0 :         char *value = ScdMemoryGetAddr(memory, addr + i, 1U);
      70            0 :         if ((value == NULL) || (*value == '\0')) {
      71            0 :             dst[i] = '\0';
      72            0 :             return i;
      73              :         }
      74            0 :         dst[i] = *value;
      75            0 :         i++;
      76              :     }
      77            0 :     dst[size - 1U] = '\0';
      78            0 :     return size - 1U;
      79              : }