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Jocelyn Bohra4ed3aa2015-07-30 10:44:16 -07001// 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
Vadim Bendeburyc3730f62019-01-15 11:59:05 -080010#if IS_CC_ENABLED(PCR_Read)
Vadim Bendebury56abbbf2018-08-28 15:34:31 -070011static UINT16 PCR_Read_Out_Marshal(PCR_Read_Out* source,
12 TPMI_ST_COMMAND_TAG tag,
13 BYTE** buffer,
14 INT32* size) {
Jocelyn Bohra4ed3aa2015-07-30 10:44:16 -070015 UINT16 total_size = 0;
16 UINT32 parameter_size = 0;
17 BYTE* parameter_size_location;
18 INT32 parameter_size_size = sizeof(UINT32);
19 UINT32 num_response_handles = 0;
20 // Add parameter_size=0 to indicate size of the parameter area. Will be
21 // replaced later by computed parameter_size.
22 if (tag == TPM_ST_SESSIONS) {
23 parameter_size_location = *buffer;
24 // Don't add to total_size, but increment *buffer and decrement *size.
25 UINT32_Marshal(&parameter_size, buffer, size);
26 }
27 // Marshal response parameters.
28 total_size += UINT32_Marshal(&source->pcrUpdateCounter, buffer, size);
29 total_size +=
30 TPML_PCR_SELECTION_Marshal(&source->pcrSelectionOut, buffer, size);
31 total_size += TPML_DIGEST_Marshal(&source->pcrValues, buffer, size);
32 // Compute actual parameter_size. Don't add result to total_size.
33 if (tag == TPM_ST_SESSIONS) {
34 parameter_size = total_size - num_response_handles * sizeof(TPM_HANDLE);
35 UINT32_Marshal(&parameter_size, &parameter_size_location,
36 &parameter_size_size);
37 }
38 return total_size;
39}
Vadim Bendebury56abbbf2018-08-28 15:34:31 -070040#endif
Jocelyn Bohra4ed3aa2015-07-30 10:44:16 -070041
Vadim Bendebury56abbbf2018-08-28 15:34:31 -070042static TPM_RC PCR_Read_In_Unmarshal(PCR_Read_In* target,
43 TPM_HANDLE request_handles[],
44 BYTE** buffer,
45 INT32* size) {
Jocelyn Bohra4ed3aa2015-07-30 10:44:16 -070046 TPM_RC result = TPM_RC_SUCCESS;
47 // Unmarshal request parameters.
48 result = TPML_PCR_SELECTION_Unmarshal(&target->pcrSelectionIn, buffer, size);
49 if (result != TPM_RC_SUCCESS) {
50 return result;
51 }
Vadim Bendebury3dfffca2015-10-20 17:17:54 -070052 if ((result == TPM_RC_SUCCESS) && *size) {
53 result = TPM_RC_SIZE;
54 }
Jocelyn Bohra4ed3aa2015-07-30 10:44:16 -070055 return result;
56}
57
58TPM_RC Exec_PCR_Read(TPMI_ST_COMMAND_TAG tag,
59 BYTE** request_parameter_buffer,
60 INT32* request_parameter_buffer_size,
61 TPM_HANDLE request_handles[],
62 UINT32* response_handle_buffer_size,
63 UINT32* response_parameter_buffer_size) {
64 TPM_RC result = TPM_RC_SUCCESS;
65 PCR_Read_In in;
66 PCR_Read_Out out;
Vadim Bendeburyc3730f62019-01-15 11:59:05 -080067#if IS_CC_ENABLED(PCR_Read)
Jocelyn Bohra4ed3aa2015-07-30 10:44:16 -070068 BYTE* response_buffer;
69 INT32 response_buffer_size;
70 UINT16 bytes_marshalled;
71 UINT16 num_response_handles = 0;
72#endif
73 *response_handle_buffer_size = 0;
74 *response_parameter_buffer_size = 0;
75 // Unmarshal request parameters to input structure.
76 result = PCR_Read_In_Unmarshal(&in, request_handles, request_parameter_buffer,
77 request_parameter_buffer_size);
78 if (result != TPM_RC_SUCCESS) {
79 return result;
80 }
81 // Execute command.
82 result = TPM2_PCR_Read(&in, &out);
83 if (result != TPM_RC_SUCCESS) {
84 return result;
85 }
86// Marshal output structure to global response buffer.
Vadim Bendeburyc3730f62019-01-15 11:59:05 -080087#if IS_CC_ENABLED(PCR_Read)
Jocelyn Bohra4ed3aa2015-07-30 10:44:16 -070088 response_buffer = MemoryGetResponseBuffer(TPM_CC_PCR_Read) + 10;
89 response_buffer_size = MAX_RESPONSE_SIZE - 10;
90 bytes_marshalled =
91 PCR_Read_Out_Marshal(&out, tag, &response_buffer, &response_buffer_size);
92 *response_handle_buffer_size = num_response_handles * sizeof(TPM_HANDLE);
93 *response_parameter_buffer_size =
94 bytes_marshalled - *response_handle_buffer_size;
95 return TPM_RC_SUCCESS;
96#endif
97 return TPM_RC_COMMAND_CODE;
98}