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      1 // Copyright 2015 The Chromium OS Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // THIS CODE IS GENERATED - DO NOT MODIFY!
      6 
      7 #include "MemoryLib_fp.h"
      8 #include "PCR_Read_fp.h"
      9 
     10 UINT16 PCR_Read_Out_Marshal(PCR_Read_Out* source,
     11                             TPMI_ST_COMMAND_TAG tag,
     12                             BYTE** buffer,
     13                             INT32* size) {
     14   UINT16 total_size = 0;
     15   UINT32 parameter_size = 0;
     16   BYTE* parameter_size_location;
     17   INT32 parameter_size_size = sizeof(UINT32);
     18   UINT32 num_response_handles = 0;
     19   // Add parameter_size=0 to indicate size of the parameter area. Will be
     20   // replaced later by computed parameter_size.
     21   if (tag == TPM_ST_SESSIONS) {
     22     parameter_size_location = *buffer;
     23     // Don't add to total_size, but increment *buffer and decrement *size.
     24     UINT32_Marshal(&parameter_size, buffer, size);
     25   }
     26   // Marshal response parameters.
     27   total_size += UINT32_Marshal(&source->pcrUpdateCounter, buffer, size);
     28   total_size +=
     29       TPML_PCR_SELECTION_Marshal(&source->pcrSelectionOut, buffer, size);
     30   total_size += TPML_DIGEST_Marshal(&source->pcrValues, buffer, size);
     31   // Compute actual parameter_size. Don't add result to total_size.
     32   if (tag == TPM_ST_SESSIONS) {
     33     parameter_size = total_size - num_response_handles * sizeof(TPM_HANDLE);
     34     UINT32_Marshal(&parameter_size, &parameter_size_location,
     35                    &parameter_size_size);
     36   }
     37   return total_size;
     38 }
     39 
     40 TPM_RC PCR_Read_In_Unmarshal(PCR_Read_In* target,
     41                              TPM_HANDLE request_handles[],
     42                              BYTE** buffer,
     43                              INT32* size) {
     44   TPM_RC result = TPM_RC_SUCCESS;
     45   // Unmarshal request parameters.
     46   result = TPML_PCR_SELECTION_Unmarshal(&target->pcrSelectionIn, buffer, size);
     47   if (result != TPM_RC_SUCCESS) {
     48     return result;
     49   }
     50   if ((result == TPM_RC_SUCCESS) && *size) {
     51     result = TPM_RC_SIZE;
     52   }
     53   return result;
     54 }
     55 
     56 TPM_RC Exec_PCR_Read(TPMI_ST_COMMAND_TAG tag,
     57                      BYTE** request_parameter_buffer,
     58                      INT32* request_parameter_buffer_size,
     59                      TPM_HANDLE request_handles[],
     60                      UINT32* response_handle_buffer_size,
     61                      UINT32* response_parameter_buffer_size) {
     62   TPM_RC result = TPM_RC_SUCCESS;
     63   PCR_Read_In in;
     64   PCR_Read_Out out;
     65 #ifdef TPM_CC_PCR_Read
     66   BYTE* response_buffer;
     67   INT32 response_buffer_size;
     68   UINT16 bytes_marshalled;
     69   UINT16 num_response_handles = 0;
     70 #endif
     71   *response_handle_buffer_size = 0;
     72   *response_parameter_buffer_size = 0;
     73   // Unmarshal request parameters to input structure.
     74   result = PCR_Read_In_Unmarshal(&in, request_handles, request_parameter_buffer,
     75                                  request_parameter_buffer_size);
     76   if (result != TPM_RC_SUCCESS) {
     77     return result;
     78   }
     79   // Execute command.
     80   result = TPM2_PCR_Read(&in, &out);
     81   if (result != TPM_RC_SUCCESS) {
     82     return result;
     83   }
     84 // Marshal output structure to global response buffer.
     85 #ifdef TPM_CC_PCR_Read
     86   response_buffer = MemoryGetResponseBuffer(TPM_CC_PCR_Read) + 10;
     87   response_buffer_size = MAX_RESPONSE_SIZE - 10;
     88   bytes_marshalled =
     89       PCR_Read_Out_Marshal(&out, tag, &response_buffer, &response_buffer_size);
     90   *response_handle_buffer_size = num_response_handles * sizeof(TPM_HANDLE);
     91   *response_parameter_buffer_size =
     92       bytes_marshalled - *response_handle_buffer_size;
     93   return TPM_RC_SUCCESS;
     94 #endif
     95   return TPM_RC_COMMAND_CODE;
     96 }
     97