[mirror_edk2.git] / ShellPkg / Library / UefiDpLib / DpUtilities.c

/** @file\r
  Utility functions used by the Dp application.\r
\r
  Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
**/\r
\r
#include <Library/BaseLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/TimerLib.h>\r
#include <Library/PeCoffGetEntryPointLib.h>\r
#include <Library/PrintLib.h>\r
#include <Library/HiiLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/DevicePathLib.h>\r
\r
#include <Pi/PiFirmwareFile.h>\r
#include <Library/DxeServicesLib.h>\r
\r
#include <Protocol/LoadedImage.h>\r
#include <Protocol/DriverBinding.h>\r
#include <Protocol/ComponentName2.h>\r
#include <Protocol/DevicePath.h>\r
\r
#include <Guid/Performance.h>\r
\r
#include "Dp.h"\r
#include "Literals.h"\r
#include "DpInternal.h"\r
\r
/** \r
  Calculate an event's duration in timer ticks.\r
  \r
  Given the count direction and the event's start and end timer values,\r
  calculate the duration of the event in timer ticks.  Information for\r
  the current measurement is pointed to by the parameter.\r
  \r
  If the measurement's start time is 1, it indicates that the developer\r
  is indicating that the measurement began at the release of reset.\r
  The start time is adjusted to the timer's starting count before performing\r
  the elapsed time calculation.\r
  \r
  The calculated duration, in ticks, is the absolute difference between\r
  the measurement's ending and starting counts.\r
  \r
  @param Measurement   Pointer to a MEASUREMENT_RECORD structure containing\r
                       data for the current measurement.\r
  \r
  @return              The 64-bit duration of the event.\r
**/\r
UINT64\r
GetDuration (\r
  IN OUT MEASUREMENT_RECORD   *Measurement\r
  )\r
{\r
  UINT64    Duration;\r
  BOOLEAN   Error;\r
\r
  // PERF_START macros are called with a value of 1 to indicate\r
  // the beginning of time.  So, adjust the start ticker value\r
  // to the real beginning of time.\r
  // Assumes no wraparound.  Even then, there is a very low probability\r
  // of having a valid StartTicker value of 1.\r
  if (Measurement->StartTimeStamp == 1) {\r
    Measurement->StartTimeStamp = TimerInfo.StartCount;\r
  }\r
  if (TimerInfo.CountUp) {\r
    Duration = Measurement->EndTimeStamp - Measurement->StartTimeStamp;\r
    Error = (BOOLEAN)(Duration > Measurement->EndTimeStamp);\r
  }\r
  else {\r
    Duration = Measurement->StartTimeStamp - Measurement->EndTimeStamp;\r
    Error = (BOOLEAN)(Duration > Measurement->StartTimeStamp);\r
  }\r
\r
  if (Error) {\r
    DEBUG ((EFI_D_ERROR, ALit_TimerLibError));\r
    Duration = 0;\r
  }\r
  return Duration;\r
}\r
\r
/** \r
  Determine whether the Measurement record is for an EFI Phase.\r
  \r
  The Token and Module members of the measurement record are checked.\r
  Module must be empty and Token must be one of SEC, PEI, DXE, BDS, or SHELL.\r
  \r
  @param[in]  Measurement A pointer to the Measurement record to test.\r
  \r
  @retval     TRUE        The measurement record is for an EFI Phase.\r
  @retval     FALSE       The measurement record is NOT for an EFI Phase.\r
**/\r
BOOLEAN\r
IsPhase(\r
  IN MEASUREMENT_RECORD        *Measurement\r
  )\r
{\r
  BOOLEAN   RetVal;\r
\r
  RetVal = (BOOLEAN)( ( *Measurement->Module == '\0')                               &&\r
            ((AsciiStrnCmp (Measurement->Token, ALit_SEC, PERF_TOKEN_LENGTH) == 0)    ||\r
             (AsciiStrnCmp (Measurement->Token, ALit_PEI, PERF_TOKEN_LENGTH) == 0)    ||\r
             (AsciiStrnCmp (Measurement->Token, ALit_DXE, PERF_TOKEN_LENGTH) == 0)    ||\r
             (AsciiStrnCmp (Measurement->Token, ALit_BDS, PERF_TOKEN_LENGTH) == 0))\r
            );\r
  return RetVal;\r
}\r
\r
/** \r
  Get the file name portion of the Pdb File Name.\r
  \r
  The portion of the Pdb File Name between the last backslash and\r
  either a following period or the end of the string is converted\r
  to Unicode and copied into UnicodeBuffer.  The name is truncated,\r
  if necessary, to ensure that UnicodeBuffer is not overrun.\r
  \r
  @param[in]  PdbFileName     Pdb file name.\r
  @param[out] UnicodeBuffer   The resultant Unicode File Name.\r
  \r
**/\r
VOID\r
GetShortPdbFileName (\r
  IN  CHAR8     *PdbFileName,\r
  OUT CHAR16    *UnicodeBuffer\r
  )\r
{\r
  UINTN IndexA;     // Current work location within an ASCII string.\r
  UINTN IndexU;     // Current work location within a Unicode string.\r
  UINTN StartIndex;\r
  UINTN EndIndex;\r
\r
  ZeroMem (UnicodeBuffer, DXE_PERFORMANCE_STRING_LENGTH * sizeof (CHAR16));\r
\r
  if (PdbFileName == NULL) {\r
    StrCpy (UnicodeBuffer, L" ");\r
  } else {\r
    StartIndex = 0;\r
    for (EndIndex = 0; PdbFileName[EndIndex] != 0; EndIndex++)\r
      ;\r
    for (IndexA = 0; PdbFileName[IndexA] != 0; IndexA++) {\r
      if (PdbFileName[IndexA] == '\\') {\r
        StartIndex = IndexA + 1;\r
      }\r
\r
      if (PdbFileName[IndexA] == '.') {\r
        EndIndex = IndexA;\r
      }\r
    }\r
\r
    IndexU = 0;\r
    for (IndexA = StartIndex; IndexA < EndIndex; IndexA++) {\r
      UnicodeBuffer[IndexU] = (CHAR16) PdbFileName[IndexA];\r
      IndexU++;\r
      if (IndexU >= DXE_PERFORMANCE_STRING_LENGTH) {\r
        UnicodeBuffer[DXE_PERFORMANCE_STRING_LENGTH] = 0;\r
        break;\r
      }\r
    }\r
  }\r
}\r
\r
/** \r
  Get a human readable name for an image handle.\r
  The following methods will be tried orderly:\r
    1. Image PDB\r
    2. ComponentName2 protocol\r
    3. FFS UI section\r
    4. Image GUID\r
    5. Image DevicePath\r
    6. Unknown Driver Name\r
\r
  @param[in]    Handle\r
\r
  @post   The resulting Unicode name string is stored in the\r
          mGaugeString global array.\r
\r
**/\r
VOID\r
GetNameFromHandle (\r
  IN EFI_HANDLE   Handle\r
  )\r
{\r
  EFI_STATUS                  Status;\r
  EFI_LOADED_IMAGE_PROTOCOL   *Image;\r
  CHAR8                       *PdbFileName;\r
  EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r
  EFI_STRING                  StringPtr;\r
  EFI_DEVICE_PATH_PROTOCOL    *LoadedImageDevicePath;\r
  EFI_DEVICE_PATH_PROTOCOL    *DevicePath;\r
  EFI_GUID                    *NameGuid;\r
  CHAR16                      *NameString;\r
  UINTN                       StringSize;\r
  CHAR8                       *PlatformLanguage;\r
  EFI_COMPONENT_NAME2_PROTOCOL      *ComponentName2;\r
\r
  //\r
  // Method 1: Get the name string from image PDB\r
  //\r
  Status = gBS->HandleProtocol (\r
                  Handle,\r
                  &gEfiLoadedImageProtocolGuid,\r
                  (VOID **) &Image\r
                  );\r
\r
  if (EFI_ERROR (Status)) {\r
    Status = gBS->OpenProtocol (\r
                    Handle,\r
                    &gEfiDriverBindingProtocolGuid,\r
                    (VOID **) &DriverBinding,\r
                    NULL,\r
                    NULL,\r
                    EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
                    );\r
    if (!EFI_ERROR (Status)) {\r
      Status = gBS->HandleProtocol (\r
                      DriverBinding->ImageHandle,\r
                      &gEfiLoadedImageProtocolGuid,\r
                      (VOID **) &Image\r
                      );\r
    }\r
  }\r
\r
  if (!EFI_ERROR (Status)) {\r
    PdbFileName = PeCoffLoaderGetPdbPointer (Image->ImageBase);\r
\r
    if (PdbFileName != NULL) {\r
      GetShortPdbFileName (PdbFileName, mGaugeString);\r
      return;\r
    }\r
  }\r
\r
  //\r
  // Method 2: Get the name string from ComponentName2 protocol\r
  //\r
  Status = gBS->HandleProtocol (\r
                  Handle,\r
                  &gEfiComponentName2ProtocolGuid,\r
                  (VOID **) &ComponentName2\r
                  );\r
  if (!EFI_ERROR (Status)) {\r
    //\r
    // Get the current platform language setting\r
    //\r
    GetEfiGlobalVariable2 (L"PlatformLang", (VOID**)&PlatformLanguage, NULL);\r
    Status = ComponentName2->GetDriverName (\r
                               ComponentName2,\r
                               PlatformLanguage != NULL ? PlatformLanguage : "en-US",\r
                               &StringPtr\r
                               );\r
    if (!EFI_ERROR (Status)) {\r
      SHELL_FREE_NON_NULL (PlatformLanguage);\r
      StrnCpy (mGaugeString, StringPtr, DP_GAUGE_STRING_LENGTH);\r
      mGaugeString[DP_GAUGE_STRING_LENGTH] = 0;\r
      return;\r
    }\r
  }\r
\r
  Status = gBS->HandleProtocol (\r
                  Handle,\r
                  &gEfiLoadedImageDevicePathProtocolGuid,\r
                  (VOID **) &LoadedImageDevicePath\r
                  );\r
  if (!EFI_ERROR (Status) && (LoadedImageDevicePath != NULL)) {\r
    DevicePath = LoadedImageDevicePath;\r
\r
    //\r
    // Try to get image GUID from LoadedImageDevicePath protocol\r
    //\r
    NameGuid = NULL;\r
    while (!IsDevicePathEndType (DevicePath)) {\r
      NameGuid = EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) DevicePath);\r
      if (NameGuid != NULL) {\r
        break;\r
      }\r
      DevicePath = NextDevicePathNode (DevicePath);\r
    }\r
\r
    if (NameGuid != NULL) {\r
      //\r
      // Try to get the image's FFS UI section by image GUID\r
      //\r
      NameString = NULL;\r
      StringSize = 0;\r
      Status = GetSectionFromAnyFv (\r
                NameGuid,\r
                EFI_SECTION_USER_INTERFACE,\r
                0,\r
                (VOID **) &NameString,\r
                &StringSize\r
                );\r
\r
      if (!EFI_ERROR (Status)) {\r
        //\r
        // Method 3. Get the name string from FFS UI section\r
        //\r
        StrnCpy (mGaugeString, NameString, DP_GAUGE_STRING_LENGTH);\r
        mGaugeString[DP_GAUGE_STRING_LENGTH] = 0;\r
        FreePool (NameString);\r
      } else {\r
        //\r
        // Method 4: Get the name string from image GUID\r
        //\r
        UnicodeSPrint (mGaugeString, sizeof (mGaugeString), L"%g", NameGuid);\r
      }\r
      return;\r
    } else {\r
      //\r
      // Method 5: Get the name string from image DevicePath\r
      //\r
      NameString = ConvertDevicePathToText (LoadedImageDevicePath, TRUE, FALSE);\r
      if (NameString != NULL) {\r
        StrnCpy (mGaugeString, NameString, DP_GAUGE_STRING_LENGTH);\r
        mGaugeString[DP_GAUGE_STRING_LENGTH] = 0;\r
        FreePool (NameString);\r
        return;\r
      }\r
    }\r
  }\r
\r
  //\r
  // Method 6: Unknown Driver Name\r
  //\r
  StringPtr = HiiGetString (gDpHiiHandle, STRING_TOKEN (STR_DP_ERROR_NAME), NULL);\r
  ASSERT (StringPtr != NULL);\r
  StrCpy (mGaugeString, StringPtr);\r
  FreePool (StringPtr);\r
}\r
\r
/** \r
  Calculate the Duration in microseconds.\r
  \r
  Duration is multiplied by 1000, instead of Frequency being divided by 1000 or\r
  multiplying the result by 1000, in order to maintain precision.  Since Duration is\r
  a 64-bit value, multiplying it by 1000 is unlikely to produce an overflow.\r
  \r
  The time is calculated as (Duration * 1000) / Timer_Frequency.\r
  \r
  @param[in]  Duration   The event duration in timer ticks.\r
  \r
  @return     A 64-bit value which is the Elapsed time in microseconds.\r
**/\r
UINT64\r
DurationInMicroSeconds (\r
  IN UINT64 Duration\r
  )\r
{\r
  UINT64 Temp;\r
\r
  Temp = MultU64x32 (Duration, 1000);\r
  return DivU64x32 (Temp, TimerInfo.Frequency);\r
}\r
\r
/** \r
  Get index of Measurement Record's match in the CumData array.\r
  \r
  If the Measurement's Token value matches a Token in one of the CumData\r
  records, the index of the matching record is returned.  The returned\r
  index is a signed value so that negative values can indicate that\r
  the Measurement didn't match any entry in the CumData array.\r
  \r
  @param[in]  Measurement A pointer to a Measurement Record to match against the CumData array.\r
  \r
  @retval     <0    Token is not in the CumData array.\r
  @retval     >=0   Return value is the index into CumData where Token is found.\r
**/\r
INTN\r
GetCumulativeItem(\r
  IN MEASUREMENT_RECORD   *Measurement\r
  )\r
{\r
  INTN    Index;\r
\r
  for( Index = 0; Index < (INTN)NumCum; ++Index) {\r
    if (AsciiStrnCmp (Measurement->Token, CumData[Index].Name, PERF_TOKEN_LENGTH) == 0) {\r
      return Index;  // Exit, we found a match\r
    }\r
  }\r
  // If the for loop exits, Token was not found.\r
  return -1;   // Indicate failure\r
}\r
Commit	Line	Data
d41bc92c	1	/** @file\r
	2	Utility functions used by the Dp application.\r
	3	\r
	4	Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.\r
	5	This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	**/\r
	13	\r
	14	#include <Library/BaseLib.h>\r
	15	#include <Library/BaseMemoryLib.h>\r
	16	#include <Library/MemoryAllocationLib.h>\r
	17	#include <Library/DebugLib.h>\r
	18	#include <Library/UefiBootServicesTableLib.h>\r
	19	#include <Library/TimerLib.h>\r
	20	#include <Library/PeCoffGetEntryPointLib.h>\r
	21	#include <Library/PrintLib.h>\r
	22	#include <Library/HiiLib.h>\r
	23	#include <Library/PcdLib.h>\r
	24	#include <Library/UefiLib.h>\r
	25	#include <Library/DevicePathLib.h>\r
	26	\r
	27	#include <Pi/PiFirmwareFile.h>\r
	28	#include <Library/DxeServicesLib.h>\r
	29	\r
	30	#include <Protocol/LoadedImage.h>\r
	31	#include <Protocol/DriverBinding.h>\r
	32	#include <Protocol/ComponentName2.h>\r
	33	#include <Protocol/DevicePath.h>\r
d41bc92c	34	\r
	35	#include <Guid/Performance.h>\r
	36	\r
	37	#include "Dp.h"\r
	38	#include "Literals.h"\r
	39	#include "DpInternal.h"\r
	40	\r
	41	/** \r
	42	Calculate an event's duration in timer ticks.\r
	43	\r
	44	Given the count direction and the event's start and end timer values,\r
	45	calculate the duration of the event in timer ticks. Information for\r
	46	the current measurement is pointed to by the parameter.\r
	47	\r
	48	If the measurement's start time is 1, it indicates that the developer\r
	49	is indicating that the measurement began at the release of reset.\r
	50	The start time is adjusted to the timer's starting count before performing\r
	51	the elapsed time calculation.\r
	52	\r
	53	The calculated duration, in ticks, is the absolute difference between\r
	54	the measurement's ending and starting counts.\r
	55	\r
	56	@param Measurement Pointer to a MEASUREMENT_RECORD structure containing\r
	57	data for the current measurement.\r
	58	\r
	59	@return The 64-bit duration of the event.\r
	60	**/\r
	61	UINT64\r
	62	GetDuration (\r
	63	IN OUT MEASUREMENT_RECORD *Measurement\r
	64	)\r
	65	{\r
	66	UINT64 Duration;\r
	67	BOOLEAN Error;\r
	68	\r
	69	// PERF_START macros are called with a value of 1 to indicate\r
	70	// the beginning of time. So, adjust the start ticker value\r
	71	// to the real beginning of time.\r
	72	// Assumes no wraparound. Even then, there is a very low probability\r
	73	// of having a valid StartTicker value of 1.\r
	74	if (Measurement->StartTimeStamp == 1) {\r
	75	Measurement->StartTimeStamp = TimerInfo.StartCount;\r
	76	}\r
	77	if (TimerInfo.CountUp) {\r
	78	Duration = Measurement->EndTimeStamp - Measurement->StartTimeStamp;\r
	79	Error = (BOOLEAN)(Duration > Measurement->EndTimeStamp);\r
	80	}\r
	81	else {\r
	82	Duration = Measurement->StartTimeStamp - Measurement->EndTimeStamp;\r
	83	Error = (BOOLEAN)(Duration > Measurement->StartTimeStamp);\r
	84	}\r
	85	\r
	86	if (Error) {\r
	87	DEBUG ((EFI_D_ERROR, ALit_TimerLibError));\r
	88	Duration = 0;\r
	89	}\r
	90	return Duration;\r
	91	}\r
	92	\r
	93	/** \r
	94	Determine whether the Measurement record is for an EFI Phase.\r
	95	\r
	96	The Token and Module members of the measurement record are checked.\r
	97	Module must be empty and Token must be one of SEC, PEI, DXE, BDS, or SHELL.\r
98	\r
99	@param[in] Measurement A pointer to the Measurement record to test.\r
100	\r
101	@retval TRUE The measurement record is for an EFI Phase.\r
102	@retval FALSE The measurement record is NOT for an EFI Phase.\r
103	**/\r
104	BOOLEAN\r
105	IsPhase(\r
106	IN MEASUREMENT_RECORD *Measurement\r
107	)\r
108	{\r
109	BOOLEAN RetVal;\r
110	\r
111	RetVal = (BOOLEAN)( ( *Measurement->Module == '\0') &&\r
112	((AsciiStrnCmp (Measurement->Token, ALit_SEC, PERF_TOKEN_LENGTH) == 0) \|\|\r
113	(AsciiStrnCmp (Measurement->Token, ALit_PEI, PERF_TOKEN_LENGTH) == 0) \|\|\r
114	(AsciiStrnCmp (Measurement->Token, ALit_DXE, PERF_TOKEN_LENGTH) == 0) \|\|\r
115	(AsciiStrnCmp (Measurement->Token, ALit_BDS, PERF_TOKEN_LENGTH) == 0))\r
116	);\r
117	return RetVal;\r
118	}\r
119	\r
120	/** \r
121	Get the file name portion of the Pdb File Name.\r
122	\r
123	The portion of the Pdb File Name between the last backslash and\r
124	either a following period or the end of the string is converted\r
125	to Unicode and copied into UnicodeBuffer. The name is truncated,\r
126	if necessary, to ensure that UnicodeBuffer is not overrun.\r
127	\r
128	@param[in] PdbFileName Pdb file name.\r
129	@param[out] UnicodeBuffer The resultant Unicode File Name.\r
130	\r
131	**/\r
132	VOID\r
133	GetShortPdbFileName (\r
134	IN CHAR8 *PdbFileName,\r
135	OUT CHAR16 *UnicodeBuffer\r
136	)\r
137	{\r
138	UINTN IndexA; // Current work location within an ASCII string.\r
139	UINTN IndexU; // Current work location within a Unicode string.\r
140	UINTN StartIndex;\r
141	UINTN EndIndex;\r
142	\r
143	ZeroMem (UnicodeBuffer, DXE_PERFORMANCE_STRING_LENGTH * sizeof (CHAR16));\r
144	\r
145	if (PdbFileName == NULL) {\r
146	StrCpy (UnicodeBuffer, L" ");\r
147	} else {\r
148	StartIndex = 0;\r
149	for (EndIndex = 0; PdbFileName[EndIndex] != 0; EndIndex++)\r
150	;\r
151	for (IndexA = 0; PdbFileName[IndexA] != 0; IndexA++) {\r
152	if (PdbFileName[IndexA] == '\\') {\r
153	StartIndex = IndexA + 1;\r
154	}\r
155	\r
156	if (PdbFileName[IndexA] == '.') {\r
157	EndIndex = IndexA;\r
158	}\r
159	}\r
160	\r
161	IndexU = 0;\r
162	for (IndexA = StartIndex; IndexA < EndIndex; IndexA++) {\r
163	UnicodeBuffer[IndexU] = (CHAR16) PdbFileName[IndexA];\r
164	IndexU++;\r
165	if (IndexU >= DXE_PERFORMANCE_STRING_LENGTH) {\r
166	UnicodeBuffer[DXE_PERFORMANCE_STRING_LENGTH] = 0;\r
167	break;\r
168	}\r
169	}\r
170	}\r
171	}\r
172	\r
173	/** \r
174	Get a human readable name for an image handle.\r
175	The following methods will be tried orderly:\r
176	1. Image PDB\r
177	2. ComponentName2 protocol\r
178	3. FFS UI section\r
179	4. Image GUID\r
180	5. Image DevicePath\r
181	6. Unknown Driver Name\r
182	\r
183	@param[in] Handle\r
184	\r
185	@post The resulting Unicode name string is stored in the\r
186	mGaugeString global array.\r
187	\r
188	**/\r
189	VOID\r
190	GetNameFromHandle (\r
191	IN EFI_HANDLE Handle\r
192	)\r
193	{\r
194	EFI_STATUS Status;\r
195	EFI_LOADED_IMAGE_PROTOCOL *Image;\r
196	CHAR8 *PdbFileName;\r
197	EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r
198	EFI_STRING StringPtr;\r
199	EFI_DEVICE_PATH_PROTOCOL *LoadedImageDevicePath;\r
200	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
201	EFI_GUID *NameGuid;\r
202	CHAR16 *NameString;\r
203	UINTN StringSize;\r
204	CHAR8 *PlatformLanguage;\r
205	EFI_COMPONENT_NAME2_PROTOCOL *ComponentName2;\r
d41bc92c	206	\r
	207	//\r
	208	// Method 1: Get the name string from image PDB\r
	209	//\r
	210	Status = gBS->HandleProtocol (\r
	211	Handle,\r
	212	&gEfiLoadedImageProtocolGuid,\r
	213	(VOID **) &Image\r
	214	);\r
	215	\r
	216	if (EFI_ERROR (Status)) {\r
	217	Status = gBS->OpenProtocol (\r
	218	Handle,\r
	219	&gEfiDriverBindingProtocolGuid,\r
	220	(VOID **) &DriverBinding,\r
	221	NULL,\r
	222	NULL,\r
	223	EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
	224	);\r
	225	if (!EFI_ERROR (Status)) {\r
	226	Status = gBS->HandleProtocol (\r
	227	DriverBinding->ImageHandle,\r
	228	&gEfiLoadedImageProtocolGuid,\r
	229	(VOID **) &Image\r
	230	);\r
	231	}\r
	232	}\r
	233	\r
	234	if (!EFI_ERROR (Status)) {\r
	235	PdbFileName = PeCoffLoaderGetPdbPointer (Image->ImageBase);\r
	236	\r
	237	if (PdbFileName != NULL) {\r
	238	GetShortPdbFileName (PdbFileName, mGaugeString);\r
	239	return;\r
	240	}\r
	241	}\r
	242	\r
	243	//\r
	244	// Method 2: Get the name string from ComponentName2 protocol\r
	245	//\r
	246	Status = gBS->HandleProtocol (\r
	247	Handle,\r
	248	&gEfiComponentName2ProtocolGuid,\r
	249	(VOID **) &ComponentName2\r
	250	);\r
	251	if (!EFI_ERROR (Status)) {\r
	252	//\r
	253	// Get the current platform language setting\r
	254	//\r
	255	GetEfiGlobalVariable2 (L"PlatformLang", (VOID**)&PlatformLanguage, NULL);\r
	256	Status = ComponentName2->GetDriverName (\r
	257	ComponentName2,\r
	258	PlatformLanguage != NULL ? PlatformLanguage : "en-US",\r
	259	&StringPtr\r
	260	);\r
	261	if (!EFI_ERROR (Status)) {\r
	262	SHELL_FREE_NON_NULL (PlatformLanguage);\r
	263	StrnCpy (mGaugeString, StringPtr, DP_GAUGE_STRING_LENGTH);\r
	264	mGaugeString[DP_GAUGE_STRING_LENGTH] = 0;\r
	265	return;\r
	266	}\r
	267	}\r
	268	\r
	269	Status = gBS->HandleProtocol (\r
270	Handle,\r
271	&gEfiLoadedImageDevicePathProtocolGuid,\r
272	(VOID **) &LoadedImageDevicePath\r
273	);\r
274	if (!EFI_ERROR (Status) && (LoadedImageDevicePath != NULL)) {\r
275	DevicePath = LoadedImageDevicePath;\r
276	\r
277	//\r
278	// Try to get image GUID from LoadedImageDevicePath protocol\r
279	//\r
280	NameGuid = NULL;\r
281	while (!IsDevicePathEndType (DevicePath)) {\r
282	NameGuid = EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) DevicePath);\r
283	if (NameGuid != NULL) {\r
284	break;\r
285	}\r
286	DevicePath = NextDevicePathNode (DevicePath);\r
287	}\r
288	\r
289	if (NameGuid != NULL) {\r
290	//\r
291	// Try to get the image's FFS UI section by image GUID\r
292	//\r
293	NameString = NULL;\r
294	StringSize = 0;\r
295	Status = GetSectionFromAnyFv (\r
296	NameGuid,\r
297	EFI_SECTION_USER_INTERFACE,\r
298	0,\r
299	(VOID **) &NameString,\r
300	&StringSize\r
301	);\r
302	\r
303	if (!EFI_ERROR (Status)) {\r
304	//\r
305	// Method 3. Get the name string from FFS UI section\r
306	//\r
307	StrnCpy (mGaugeString, NameString, DP_GAUGE_STRING_LENGTH);\r
308	mGaugeString[DP_GAUGE_STRING_LENGTH] = 0;\r
309	FreePool (NameString);\r
310	} else {\r
311	//\r
312	// Method 4: Get the name string from image GUID\r
313	//\r
314	UnicodeSPrint (mGaugeString, sizeof (mGaugeString), L"%g", NameGuid);\r
315	}\r
316	return;\r
317	} else {\r
318	//\r
319	// Method 5: Get the name string from image DevicePath\r
320	//\r
863986b3 RN	321	NameString = ConvertDevicePathToText (LoadedImageDevicePath, TRUE, FALSE);\r
	322	if (NameString != NULL) {\r
	323	StrnCpy (mGaugeString, NameString, DP_GAUGE_STRING_LENGTH);\r
	324	mGaugeString[DP_GAUGE_STRING_LENGTH] = 0;\r
	325	FreePool (NameString);\r
	326	return;\r
d41bc92c	327	}\r
	328	}\r
	329	}\r
	330	\r
	331	//\r
	332	// Method 6: Unknown Driver Name\r
	333	//\r
	334	StringPtr = HiiGetString (gDpHiiHandle, STRING_TOKEN (STR_DP_ERROR_NAME), NULL);\r
	335	ASSERT (StringPtr != NULL);\r
	336	StrCpy (mGaugeString, StringPtr);\r
	337	FreePool (StringPtr);\r
	338	}\r
	339	\r
	340	/** \r
	341	Calculate the Duration in microseconds.\r
	342	\r
	343	Duration is multiplied by 1000, instead of Frequency being divided by 1000 or\r
	344	multiplying the result by 1000, in order to maintain precision. Since Duration is\r
	345	a 64-bit value, multiplying it by 1000 is unlikely to produce an overflow.\r
	346	\r
	347	The time is calculated as (Duration * 1000) / Timer_Frequency.\r
	348	\r
	349	@param[in] Duration The event duration in timer ticks.\r
	350	\r
	351	@return A 64-bit value which is the Elapsed time in microseconds.\r
	352	**/\r
	353	UINT64\r
	354	DurationInMicroSeconds (\r
	355	IN UINT64 Duration\r
	356	)\r
	357	{\r
	358	UINT64 Temp;\r
	359	\r
	360	Temp = MultU64x32 (Duration, 1000);\r
	361	return DivU64x32 (Temp, TimerInfo.Frequency);\r
	362	}\r
	363	\r
	364	/** \r
	365	Get index of Measurement Record's match in the CumData array.\r
	366	\r
	367	If the Measurement's Token value matches a Token in one of the CumData\r
	368	records, the index of the matching record is returned. The returned\r
	369	index is a signed value so that negative values can indicate that\r
	370	the Measurement didn't match any entry in the CumData array.\r
	371	\r
	372	@param[in] Measurement A pointer to a Measurement Record to match against the CumData array.\r
	373	\r
	374	@retval <0 Token is not in the CumData array.\r
	375	@retval >=0 Return value is the index into CumData where Token is found.\r
	376	**/\r
	377	INTN\r
	378	GetCumulativeItem(\r
	379	IN MEASUREMENT_RECORD *Measurement\r
	380	)\r
	381	{\r
	382	INTN Index;\r
	383	\r
	384	for( Index = 0; Index < (INTN)NumCum; ++Index) {\r
	385	if (AsciiStrnCmp (Measurement->Token, CumData[Index].Name, PERF_TOKEN_LENGTH) == 0) {\r
	386	return Index; // Exit, we found a match\r
	387	}\r
	388	}\r
	389	// If the for loop exits, Token was not found.\r
	390	return -1; // Indicate failure\r
391	}\r