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-rw-r--r--Core/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchExceptionHandler.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/Core/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchExceptionHandler.c b/Core/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchExceptionHandler.c
new file mode 100644
index 0000000000..f711c3107b
--- /dev/null
+++ b/Core/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchExceptionHandler.c
@@ -0,0 +1,235 @@
+/** @file
+ x64 CPU Exception Handler.
+
+ Copyright (c) 2012 - 2015, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "CpuExceptionCommon.h"
+
+/**
+ Return address map of exception handler template so that C code can generate
+ exception tables.
+
+ @param IdtEntry Pointer to IDT entry to be updated.
+ @param InterruptHandler IDT handler value.
+**/
+VOID
+ArchUpdateIdtEntry (
+ IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry,
+ IN UINTN InterruptHandler
+ )
+{
+ IdtEntry->Bits.OffsetLow = (UINT16)(UINTN)InterruptHandler;
+ IdtEntry->Bits.OffsetHigh = (UINT16)((UINTN)InterruptHandler >> 16);
+ IdtEntry->Bits.OffsetUpper = (UINT32)((UINTN)InterruptHandler >> 32);
+ IdtEntry->Bits.GateType = IA32_IDT_GATE_TYPE_INTERRUPT_32;
+}
+
+/**
+ Read IDT handler value from IDT entry.
+
+ @param IdtEntry Pointer to IDT entry to be read.
+
+**/
+UINTN
+ArchGetIdtHandler (
+ IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry
+ )
+{
+ return IdtEntry->Bits.OffsetLow + (((UINTN) IdtEntry->Bits.OffsetHigh) << 16) +
+ (((UINTN) IdtEntry->Bits.OffsetUpper) << 32);
+}
+
+/**
+ Save CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.
+
+ @param ExceptionType Exception type.
+ @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
+**/
+VOID
+ArchSaveExceptionContext (
+ IN UINTN ExceptionType,
+ IN EFI_SYSTEM_CONTEXT SystemContext
+ )
+{
+ IA32_EFLAGS32 Eflags;
+ //
+ // Save Exception context in global variable
+ //
+ mReservedVectors[ExceptionType].OldSs = SystemContext.SystemContextX64->Ss;
+ mReservedVectors[ExceptionType].OldSp = SystemContext.SystemContextX64->Rsp;
+ mReservedVectors[ExceptionType].OldFlags = SystemContext.SystemContextX64->Rflags;
+ mReservedVectors[ExceptionType].OldCs = SystemContext.SystemContextX64->Cs;
+ mReservedVectors[ExceptionType].OldIp = SystemContext.SystemContextX64->Rip;
+ mReservedVectors[ExceptionType].ExceptionData = SystemContext.SystemContextX64->ExceptionData;
+ //
+ // Clear IF flag to avoid old IDT handler enable interrupt by IRET
+ //
+ Eflags.UintN = SystemContext.SystemContextX64->Rflags;
+ Eflags.Bits.IF = 0;
+ SystemContext.SystemContextX64->Rflags = Eflags.UintN;
+ //
+ // Modify the EIP in stack, then old IDT handler will return to the stub code
+ //
+ SystemContext.SystemContextX64->Rip = (UINTN) mReservedVectors[ExceptionType].HookAfterStubHeaderCode;
+}
+
+/**
+ Restore CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.
+
+ @param ExceptionType Exception type.
+ @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
+**/
+VOID
+ArchRestoreExceptionContext (
+ IN UINTN ExceptionType,
+ IN EFI_SYSTEM_CONTEXT SystemContext
+ )
+{
+ SystemContext.SystemContextX64->Ss = mReservedVectors[ExceptionType].OldSs;
+ SystemContext.SystemContextX64->Rsp = mReservedVectors[ExceptionType].OldSp;
+ SystemContext.SystemContextX64->Rflags = mReservedVectors[ExceptionType].OldFlags;
+ SystemContext.SystemContextX64->Cs = mReservedVectors[ExceptionType].OldCs;
+ SystemContext.SystemContextX64->Rip = mReservedVectors[ExceptionType].OldIp;
+ SystemContext.SystemContextX64->ExceptionData = mReservedVectors[ExceptionType].ExceptionData;
+}
+
+/**
+ Display CPU information.
+
+ @param ExceptionType Exception type.
+ @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
+**/
+VOID
+DumpCpuContent (
+ IN EFI_EXCEPTION_TYPE ExceptionType,
+ IN EFI_SYSTEM_CONTEXT SystemContext
+ )
+{
+ UINTN ImageBase;
+ UINTN EntryPoint;
+
+ InternalPrintMessage (
+ "!!!! X64 Exception Type - %02x(%a) CPU Apic ID - %08x !!!!\n",
+ ExceptionType,
+ GetExceptionNameStr (ExceptionType),
+ GetApicId ()
+ );
+
+ InternalPrintMessage (
+ "RIP - %016lx, CS - %016lx, RFLAGS - %016lx\n",
+ SystemContext.SystemContextX64->Rip,
+ SystemContext.SystemContextX64->Cs,
+ SystemContext.SystemContextX64->Rflags
+ );
+ if (mErrorCodeFlag & (1 << ExceptionType)) {
+ InternalPrintMessage (
+ "ExceptionData - %016lx\n",
+ SystemContext.SystemContextX64->ExceptionData
+ );
+ }
+ InternalPrintMessage (
+ "RAX - %016lx, RCX - %016lx, RDX - %016lx\n",
+ SystemContext.SystemContextX64->Rax,
+ SystemContext.SystemContextX64->Rcx,
+ SystemContext.SystemContextX64->Rdx
+ );
+ InternalPrintMessage (
+ "RBX - %016lx, RSP - %016lx, RBP - %016lx\n",
+ SystemContext.SystemContextX64->Rbx,
+ SystemContext.SystemContextX64->Rsp,
+ SystemContext.SystemContextX64->Rbp
+ );
+ InternalPrintMessage (
+ "RSI - %016lx, RDI - %016lx\n",
+ SystemContext.SystemContextX64->Rsi,
+ SystemContext.SystemContextX64->Rdi
+ );
+ InternalPrintMessage (
+ "R8 - %016lx, R9 - %016lx, R10 - %016lx\n",
+ SystemContext.SystemContextX64->R8,
+ SystemContext.SystemContextX64->R9,
+ SystemContext.SystemContextX64->R10
+ );
+ InternalPrintMessage (
+ "R11 - %016lx, R12 - %016lx, R13 - %016lx\n",
+ SystemContext.SystemContextX64->R11,
+ SystemContext.SystemContextX64->R12,
+ SystemContext.SystemContextX64->R13
+ );
+ InternalPrintMessage (
+ "R14 - %016lx, R15 - %016lx\n",
+ SystemContext.SystemContextX64->R14,
+ SystemContext.SystemContextX64->R15
+ );
+ InternalPrintMessage (
+ "DS - %016lx, ES - %016lx, FS - %016lx\n",
+ SystemContext.SystemContextX64->Ds,
+ SystemContext.SystemContextX64->Es,
+ SystemContext.SystemContextX64->Fs
+ );
+ InternalPrintMessage (
+ "GS - %016lx, SS - %016lx\n",
+ SystemContext.SystemContextX64->Gs,
+ SystemContext.SystemContextX64->Ss
+ );
+ InternalPrintMessage (
+ "CR0 - %016lx, CR2 - %016lx, CR3 - %016lx\n",
+ SystemContext.SystemContextX64->Cr0,
+ SystemContext.SystemContextX64->Cr2,
+ SystemContext.SystemContextX64->Cr3
+ );
+ InternalPrintMessage (
+ "CR4 - %016lx, CR8 - %016lx\n",
+ SystemContext.SystemContextX64->Cr4,
+ SystemContext.SystemContextX64->Cr8
+ );
+ InternalPrintMessage (
+ "DR0 - %016lx, DR1 - %016lx, DR2 - %016lx\n",
+ SystemContext.SystemContextX64->Dr0,
+ SystemContext.SystemContextX64->Dr1,
+ SystemContext.SystemContextX64->Dr2
+ );
+ InternalPrintMessage (
+ "DR3 - %016lx, DR6 - %016lx, DR7 - %016lx\n",
+ SystemContext.SystemContextX64->Dr3,
+ SystemContext.SystemContextX64->Dr6,
+ SystemContext.SystemContextX64->Dr7
+ );
+ InternalPrintMessage (
+ "GDTR - %016lx %016lx, LDTR - %016lx\n",
+ SystemContext.SystemContextX64->Gdtr[0],
+ SystemContext.SystemContextX64->Gdtr[1],
+ SystemContext.SystemContextX64->Ldtr
+ );
+ InternalPrintMessage (
+ "IDTR - %016lx %016lx, TR - %016lx\n",
+ SystemContext.SystemContextX64->Idtr[0],
+ SystemContext.SystemContextX64->Idtr[1],
+ SystemContext.SystemContextX64->Tr
+ );
+ InternalPrintMessage (
+ "FXSAVE_STATE - %016lx\n",
+ &SystemContext.SystemContextX64->FxSaveState
+ );
+
+ //
+ // Find module image base and module entry point by RIP
+ //
+ ImageBase = FindModuleImageBase (SystemContext.SystemContextX64->Rip, &EntryPoint);
+ if (ImageBase != 0) {
+ InternalPrintMessage (
+ " (ImageBase=%016lx, EntryPoint=%016lx) !!!!\n",
+ ImageBase,
+ EntryPoint
+ );
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-20 15:25:26 +0000