UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchExceptionHandler.c

   1 /** @file
   2   x64 CPU Exception Hanlder.
   3
   4   Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "CpuExceptionCommon.h"
  16
  17 /**
  18   Internal function to setup CPU exception handlers.
  19
  20 **/
  21 VOID
  22 InternalSetupCpuExceptionHandlers (
  23   VOID
  24   )
  25 {
  26   IA32_DESCRIPTOR                     IdtDescriptor;
  27   UINTN                               IdtSize;
  28   EXCEPTION_HANDLER_TEMPLATE_MAP      TemplateMap;
  29   UINT16                              CodeSegment;
  30   IA32_IDT_GATE_DESCRIPTOR            *IdtEntry;
  31   UINTN                               Index;
  32   UINTN                               InterruptHandler;
  33
  34   //
  35   // Read IDT descriptor and calculate IDT size
  36   //
  37   AsmReadIdtr (&IdtDescriptor);
  38   IdtSize = (IdtDescriptor.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);
  39   if (IdtSize > CPU_EXCEPTION_NUM) {
  40     //
  41     // CPU exeption library only setup CPU_EXCEPTION_NUM exception handler at most
  42     //
  43     IdtSize = CPU_EXCEPTION_NUM;
  44   }
  45
  46   //
  47   // Use current CS as the segment selector of interrupt gate in IDT
  48   //
  49   CodeSegment = AsmReadCs ();
  50   IdtEntry = (IA32_IDT_GATE_DESCRIPTOR *) IdtDescriptor.Base;
  51
  52   GetTemplateAddressMap (&TemplateMap);
  53
  54   for (Index = 0; Index < IdtSize; Index ++) {
  55     InterruptHandler = TemplateMap.ExceptionStart + Index * TemplateMap.ExceptionStubHeaderSize;
  56     IdtEntry[Index].Bits.OffsetLow       = (UINT16)(UINTN)InterruptHandler;
  57     IdtEntry[Index].Bits.OffsetHigh      = (UINT16)((UINTN)InterruptHandler >> 16);
  58     IdtEntry[Index].Bits.OffsetUpper     = (UINT32)((UINTN)InterruptHandler >> 32);
  59     IdtEntry[Index].Bits.Selector        = CodeSegment;
  60     IdtEntry[Index].Bits.GateType        = IA32_IDT_GATE_TYPE_INTERRUPT_32;
  61   }
  62 }
  63
  64 /**
  65   Common exception handler.
  66
  67   @param ExceptionType  Exception type.
  68   @param SystemContext  Pointer to EFI_SYSTEM_CONTEXT.
  69 **/
  70 VOID
  71 DumpCpuContent (
  72   IN UINTN                ExceptionType,
  73   IN EFI_SYSTEM_CONTEXT   SystemContext
  74   )
  75 {
  76   UINTN                   ImageBase;
  77   UINTN                   EntryPoint;
  78
  79   InternalPrintMessage (
  80     "!!!! X64 Exception Type - %016lx     CPU Apic ID - %08x !!!!\n",
  81     ExceptionType,
  82     GetApicId ()
  83     );
  84   InternalPrintMessage (
  85     "RIP  - %016lx, CS  - %016lx, RFLAGS - %016lx\n",
  86     SystemContext.SystemContextX64->Rip,
  87     SystemContext.SystemContextX64->Cs,
  88     SystemContext.SystemContextX64->Rflags
  89     );
  90   if (mErrorCodeFlag & (1 << ExceptionType)) {
  91     InternalPrintMessage (
  92       "ExceptionData - %016lx\n",
  93       SystemContext.SystemContextX64->ExceptionData
  94       );
  95   }
  96   InternalPrintMessage (
  97     "RAX  - %016lx, RCX - %016lx, RDX - %016lx\n",
  98     SystemContext.SystemContextX64->Rax,
  99     SystemContext.SystemContextX64->Rcx,
 100     SystemContext.SystemContextX64->Rdx
 101     );
 102   InternalPrintMessage (
 103     "RBX  - %016lx, RSP - %016lx, RBP - %016lx\n",
 104     SystemContext.SystemContextX64->Rbx,
 105     SystemContext.SystemContextX64->Rsp,
 106     SystemContext.SystemContextX64->Rbp
 107     );
 108   InternalPrintMessage (
 109     "RSI  - %016lx, RDI - %016lx\n",
 110     SystemContext.SystemContextX64->Rsi,
 111     SystemContext.SystemContextX64->Rdi
 112     );
 113   InternalPrintMessage (
 114     "R8   - %016lx, R9  - %016lx, R10 - %016lx\n",
 115     SystemContext.SystemContextX64->R8,
 116     SystemContext.SystemContextX64->R9,
 117     SystemContext.SystemContextX64->R10
 118     );
 119   InternalPrintMessage (
 120     "R11  - %016lx, R12 - %016lx, R13 - %016lx\n",
 121     SystemContext.SystemContextX64->R11,
 122     SystemContext.SystemContextX64->R12,
 123     SystemContext.SystemContextX64->R13
 124     );
 125   InternalPrintMessage (
 126     "R14  - %016lx, R15 - %016lx\n",
 127     SystemContext.SystemContextX64->R14,
 128     SystemContext.SystemContextX64->R15
 129     );
 130   InternalPrintMessage (
 131     "DS   - %016lx, ES  - %016lx, FS  - %016lx\n",
 132     SystemContext.SystemContextX64->Ds,
 133     SystemContext.SystemContextX64->Es,
 134     SystemContext.SystemContextX64->Fs
 135     );
 136   InternalPrintMessage (
 137     "GS   - %016lx, SS  - %016lx\n",
 138     SystemContext.SystemContextX64->Gs,
 139     SystemContext.SystemContextX64->Ss
 140     );
 141   InternalPrintMessage (
 142     "CR0  - %016lx, CR2 - %016lx, CR3 - %016lx\n",
 143     SystemContext.SystemContextX64->Cr0,
 144     SystemContext.SystemContextX64->Cr2,
 145     SystemContext.SystemContextX64->Cr3
 146     );
 147   InternalPrintMessage (
 148     "CR4  - %016lx, CR8 - %016lx\n",
 149     SystemContext.SystemContextX64->Cr4,
 150     SystemContext.SystemContextX64->Cr8
 151     );
 152   InternalPrintMessage (
 153     "DR0  - %016lx, DR1 - %016lx, DR2 - %016lx\n",
 154     SystemContext.SystemContextX64->Dr0,
 155     SystemContext.SystemContextX64->Dr1,
 156     SystemContext.SystemContextX64->Dr2
 157     );
 158   InternalPrintMessage (
 159     "DR3  - %016lx, DR6 - %016lx, DR7 - %016lx\n",
 160     SystemContext.SystemContextX64->Dr3,
 161     SystemContext.SystemContextX64->Dr6,
 162     SystemContext.SystemContextX64->Dr7
 163     );
 164   InternalPrintMessage (
 165     "GDTR - %016lx %016lx, LDTR - %016lx\n",
 166     SystemContext.SystemContextX64->Gdtr[0],
 167     SystemContext.SystemContextX64->Gdtr[1],
 168     SystemContext.SystemContextX64->Ldtr
 169     );
 170   InternalPrintMessage (
 171     "IDTR - %016lx %016lx,   TR - %016lx\n",
 172     SystemContext.SystemContextX64->Idtr[0],
 173     SystemContext.SystemContextX64->Idtr[1],
 174     SystemContext.SystemContextX64->Tr
 175     );
 176         InternalPrintMessage (
 177     "FXSAVE_STATE - %016lx\n",
 178     &SystemContext.SystemContextX64->FxSaveState
 179     );
 180
 181   //
 182   // Find module image base and module entry point by RIP
 183   //
 184   ImageBase = FindModuleImageBase (SystemContext.SystemContextX64->Rip, &EntryPoint);
 185   if (ImageBase != 0) {
 186     InternalPrintMessage (
 187       " (ImageBase=%016lx, EntryPoint=%016lx) !!!!\n",
 188       ImageBase,
 189       EntryPoint
 190       );
 191   }
 192 }