MdeModulePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdeModulePkg / Core / Dxe / Dispatcher / Dependency.c

diff --git a/MdeModulePkg/Core/Dxe/Dispatcher/Dependency.c b/MdeModulePkg/Core/Dxe/Dispatcher/Dependency.c
index e489547302fcfdb5283aff785361cc3fd88f2eeb..89e540ba75b9741ce4eef9b0900eec856c0dd0d0 100644 (file)
--- a/MdeModulePkg/Core/Dxe/Dispatcher/Dependency.c
+++ b/MdeModulePkg/Core/Dxe/Dispatcher/Dependency.c
@@ -5,14 +5,8 @@
   if a driver can be scheduled for execution.  The criteria for\r
   schedulability is that the dependency expression is satisfied.\r
 \r
-Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
-All rights reserved. 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
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
@@ -220,6 +214,9 @@ CoreIsSchedulable (
   EFI_GUID    DriverGuid;\r
   VOID        *Interface;\r
 \r
+  Operator = FALSE;\r
+  Operator2 = FALSE;\r
+\r
   if (DriverEntry->After || DriverEntry->Before) {\r
     //\r
     // If Before or After Depex skip as CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter ()\r
@@ -228,14 +225,19 @@ CoreIsSchedulable (
     return FALSE;\r
   }\r
 \r
+  DEBUG ((DEBUG_DISPATCH, "Evaluate DXE DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r
+\r
   if (DriverEntry->Depex == NULL) {\r
     //\r
     // A NULL Depex means treat the driver like an UEFI 2.0 thing.\r
     //\r
     Status = CoreAllEfiServicesAvailable ();\r
+    DEBUG ((DEBUG_DISPATCH, "  All UEFI Services Available                     = "));\r
     if (EFI_ERROR (Status)) {\r
+      DEBUG ((DEBUG_DISPATCH, "FALSE\n  RESULT = FALSE\n"));\r
       return FALSE;\r
     }\r
+    DEBUG ((DEBUG_DISPATCH, "TRUE\n  RESULT = TRUE\n"));\r
     return TRUE;\r
   }\r
 \r
@@ -254,6 +256,7 @@ CoreIsSchedulable (
     // past the end of the dependency expression.\r
     //\r
     if (((UINTN)Iterator - (UINTN)DriverEntry->Depex) >= DriverEntry->DepexSize) {\r
+      DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Attempt to fetch past end of depex)\n"));\r
       return FALSE;\r
     }\r
 \r
@@ -269,6 +272,7 @@ CoreIsSchedulable (
       // If the code flow arrives at this point, there was a BEFORE or AFTER\r
       // that were not the first opcodes.\r
       //\r
+      DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected BEFORE or AFTER opcode)\n"));\r
       ASSERT (FALSE);\r
     case EFI_DEP_SOR:\r
       //\r
@@ -276,8 +280,11 @@ CoreIsSchedulable (
       // at any other location, then the dependency expression evaluates to FALSE\r
       //\r
       if (Iterator != DriverEntry->Depex) {\r
+        DEBUG ((DEBUG_DISPATCH, "  SOR\n"));\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected SOR opcode)\n"));\r
         return FALSE;\r
       }\r
+      DEBUG ((DEBUG_DISPATCH, "  SOR                                             = Requested\n"));\r
       //\r
       // Otherwise, it is the first opcode and should be treated as a NOP.\r
       //\r
@@ -293,12 +300,15 @@ CoreIsSchedulable (
       Status = CoreLocateProtocol (&DriverGuid, NULL, &Interface);\r
 \r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  PUSH GUID(%g) = FALSE\n", &DriverGuid));\r
         Status = PushBool (FALSE);\r
       } else {\r
+        DEBUG ((DEBUG_DISPATCH, "  PUSH GUID(%g) = TRUE\n", &DriverGuid));\r
         *Iterator = EFI_DEP_REPLACE_TRUE;\r
         Status = PushBool (TRUE);\r
       }\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
 \r
@@ -306,75 +316,97 @@ CoreIsSchedulable (
       break;\r
 \r
     case EFI_DEP_AND:\r
+      DEBUG ((DEBUG_DISPATCH, "  AND\n"));\r
       Status = PopBool (&Operator);\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
 \r
       Status = PopBool (&Operator2);\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
 \r
       Status = PushBool ((BOOLEAN)(Operator && Operator2));\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
       break;\r
 \r
     case EFI_DEP_OR:\r
+      DEBUG ((DEBUG_DISPATCH, "  OR\n"));\r
       Status = PopBool (&Operator);\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
 \r
       Status = PopBool (&Operator2);\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
 \r
       Status = PushBool ((BOOLEAN)(Operator || Operator2));\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
       break;\r
 \r
     case EFI_DEP_NOT:\r
+      DEBUG ((DEBUG_DISPATCH, "  NOT\n"));\r
       Status = PopBool (&Operator);\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
 \r
       Status = PushBool ((BOOLEAN)(!Operator));\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
       break;\r
 \r
     case EFI_DEP_TRUE:\r
+      DEBUG ((DEBUG_DISPATCH, "  TRUE\n"));\r
       Status = PushBool (TRUE);\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
       break;\r
 \r
     case EFI_DEP_FALSE:\r
+      DEBUG ((DEBUG_DISPATCH, "  FALSE\n"));\r
       Status = PushBool (FALSE);\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
       break;\r
 \r
     case EFI_DEP_END:\r
+      DEBUG ((DEBUG_DISPATCH, "  END\n"));\r
       Status = PopBool (&Operator);\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
+      DEBUG ((DEBUG_DISPATCH, "  RESULT = %a\n", Operator ? "TRUE" : "FALSE"));\r
       return Operator;\r
 \r
     case EFI_DEP_REPLACE_TRUE:\r
+      CopyMem (&DriverGuid, Iterator + 1, sizeof (EFI_GUID));\r
+      DEBUG ((DEBUG_DISPATCH, "  PUSH GUID(%g) = TRUE\n", &DriverGuid));\r
+\r
       Status = PushBool (TRUE);\r
       if (EFI_ERROR (Status)) {\r
+        DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unexpected error)\n"));\r
         return FALSE;\r
       }\r
 \r
@@ -382,6 +414,7 @@ CoreIsSchedulable (
       break;\r
 \r
     default:\r
+      DEBUG ((DEBUG_DISPATCH, "  RESULT = FALSE (Unknown opcode)\n"));\r
       goto Done;\r
     }\r
 \r