mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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234 lines
7.7 KiB
C
234 lines
7.7 KiB
C
/** @file
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x64 CPU Exception Handler.
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Copyright (c) 2012 - 2013, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "CpuExceptionCommon.h"
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/**
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Return address map of exception handler template so that C code can generate
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exception tables.
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@param IdtEntry Pointer to IDT entry to be updated.
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@param InterruptHandler IDT handler value.
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**/
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VOID
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ArchUpdateIdtEntry (
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IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry,
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IN UINTN InterruptHandler
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)
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{
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IdtEntry->Bits.OffsetLow = (UINT16)(UINTN)InterruptHandler;
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IdtEntry->Bits.OffsetHigh = (UINT16)((UINTN)InterruptHandler >> 16);
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IdtEntry->Bits.OffsetUpper = (UINT32)((UINTN)InterruptHandler >> 32);
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IdtEntry->Bits.GateType = IA32_IDT_GATE_TYPE_INTERRUPT_32;
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}
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/**
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Read IDT handler value from IDT entry.
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@param IdtEntry Pointer to IDT entry to be read.
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**/
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UINTN
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ArchGetIdtHandler (
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IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry
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)
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{
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return IdtEntry->Bits.OffsetLow + (((UINTN) IdtEntry->Bits.OffsetHigh) << 16) +
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(((UINTN) IdtEntry->Bits.OffsetUpper) << 32);
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}
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/**
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Save CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.
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@param ExceptionType Exception type.
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@param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
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**/
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VOID
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ArchSaveExceptionContext (
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IN UINTN ExceptionType,
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IN EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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IA32_EFLAGS32 Eflags;
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//
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// Save Exception context in global variable
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//
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mReservedVectors[ExceptionType].OldSs = SystemContext.SystemContextX64->Ss;
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mReservedVectors[ExceptionType].OldSp = SystemContext.SystemContextX64->Rsp;
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mReservedVectors[ExceptionType].OldFlags = SystemContext.SystemContextX64->Rflags;
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mReservedVectors[ExceptionType].OldCs = SystemContext.SystemContextX64->Cs;
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mReservedVectors[ExceptionType].OldIp = SystemContext.SystemContextX64->Rip;
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mReservedVectors[ExceptionType].ExceptionData = SystemContext.SystemContextX64->ExceptionData;
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//
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// Clear IF flag to avoid old IDT handler enable interrupt by IRET
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//
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Eflags.UintN = SystemContext.SystemContextX64->Rflags;
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Eflags.Bits.IF = 0;
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SystemContext.SystemContextX64->Rflags = Eflags.UintN;
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//
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// Modify the EIP in stack, then old IDT handler will return to the stub code
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//
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SystemContext.SystemContextX64->Rip = (UINTN) mReservedVectors[ExceptionType].HookAfterStubHeaderCode;
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}
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/**
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Restore CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.
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@param ExceptionType Exception type.
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@param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
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**/
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VOID
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ArchRestoreExceptionContext (
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IN UINTN ExceptionType,
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IN EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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SystemContext.SystemContextX64->Ss = mReservedVectors[ExceptionType].OldSs;
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SystemContext.SystemContextX64->Rsp = mReservedVectors[ExceptionType].OldSp;
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SystemContext.SystemContextX64->Rflags = mReservedVectors[ExceptionType].OldFlags;
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SystemContext.SystemContextX64->Cs = mReservedVectors[ExceptionType].OldCs;
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SystemContext.SystemContextX64->Rip = mReservedVectors[ExceptionType].OldIp;
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SystemContext.SystemContextX64->ExceptionData = mReservedVectors[ExceptionType].ExceptionData;
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}
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/**
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Display CPU information.
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@param ExceptionType Exception type.
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@param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
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**/
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VOID
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DumpCpuContent (
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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UINTN ImageBase;
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UINTN EntryPoint;
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InternalPrintMessage (
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"!!!! X64 Exception Type - %016lx CPU Apic ID - %08x !!!!\n",
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ExceptionType,
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GetApicId ()
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);
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InternalPrintMessage (
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"RIP - %016lx, CS - %016lx, RFLAGS - %016lx\n",
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SystemContext.SystemContextX64->Rip,
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SystemContext.SystemContextX64->Cs,
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SystemContext.SystemContextX64->Rflags
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);
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if (mErrorCodeFlag & (1 << ExceptionType)) {
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InternalPrintMessage (
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"ExceptionData - %016lx\n",
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SystemContext.SystemContextX64->ExceptionData
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);
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}
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InternalPrintMessage (
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"RAX - %016lx, RCX - %016lx, RDX - %016lx\n",
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SystemContext.SystemContextX64->Rax,
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SystemContext.SystemContextX64->Rcx,
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SystemContext.SystemContextX64->Rdx
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);
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InternalPrintMessage (
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"RBX - %016lx, RSP - %016lx, RBP - %016lx\n",
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SystemContext.SystemContextX64->Rbx,
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SystemContext.SystemContextX64->Rsp,
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SystemContext.SystemContextX64->Rbp
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);
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InternalPrintMessage (
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"RSI - %016lx, RDI - %016lx\n",
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SystemContext.SystemContextX64->Rsi,
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SystemContext.SystemContextX64->Rdi
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);
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InternalPrintMessage (
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"R8 - %016lx, R9 - %016lx, R10 - %016lx\n",
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SystemContext.SystemContextX64->R8,
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SystemContext.SystemContextX64->R9,
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SystemContext.SystemContextX64->R10
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);
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InternalPrintMessage (
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"R11 - %016lx, R12 - %016lx, R13 - %016lx\n",
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SystemContext.SystemContextX64->R11,
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SystemContext.SystemContextX64->R12,
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SystemContext.SystemContextX64->R13
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);
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InternalPrintMessage (
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"R14 - %016lx, R15 - %016lx\n",
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SystemContext.SystemContextX64->R14,
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SystemContext.SystemContextX64->R15
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);
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InternalPrintMessage (
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"DS - %016lx, ES - %016lx, FS - %016lx\n",
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SystemContext.SystemContextX64->Ds,
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SystemContext.SystemContextX64->Es,
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SystemContext.SystemContextX64->Fs
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);
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InternalPrintMessage (
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"GS - %016lx, SS - %016lx\n",
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SystemContext.SystemContextX64->Gs,
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SystemContext.SystemContextX64->Ss
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);
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InternalPrintMessage (
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"CR0 - %016lx, CR2 - %016lx, CR3 - %016lx\n",
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SystemContext.SystemContextX64->Cr0,
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SystemContext.SystemContextX64->Cr2,
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SystemContext.SystemContextX64->Cr3
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);
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InternalPrintMessage (
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"CR4 - %016lx, CR8 - %016lx\n",
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SystemContext.SystemContextX64->Cr4,
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SystemContext.SystemContextX64->Cr8
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);
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InternalPrintMessage (
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"DR0 - %016lx, DR1 - %016lx, DR2 - %016lx\n",
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SystemContext.SystemContextX64->Dr0,
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SystemContext.SystemContextX64->Dr1,
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SystemContext.SystemContextX64->Dr2
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);
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InternalPrintMessage (
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"DR3 - %016lx, DR6 - %016lx, DR7 - %016lx\n",
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SystemContext.SystemContextX64->Dr3,
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SystemContext.SystemContextX64->Dr6,
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SystemContext.SystemContextX64->Dr7
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);
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InternalPrintMessage (
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"GDTR - %016lx %016lx, LDTR - %016lx\n",
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SystemContext.SystemContextX64->Gdtr[0],
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SystemContext.SystemContextX64->Gdtr[1],
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SystemContext.SystemContextX64->Ldtr
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);
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InternalPrintMessage (
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"IDTR - %016lx %016lx, TR - %016lx\n",
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SystemContext.SystemContextX64->Idtr[0],
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SystemContext.SystemContextX64->Idtr[1],
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SystemContext.SystemContextX64->Tr
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);
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InternalPrintMessage (
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"FXSAVE_STATE - %016lx\n",
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&SystemContext.SystemContextX64->FxSaveState
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);
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//
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// Find module image base and module entry point by RIP
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//
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ImageBase = FindModuleImageBase (SystemContext.SystemContextX64->Rip, &EntryPoint);
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if (ImageBase != 0) {
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InternalPrintMessage (
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" (ImageBase=%016lx, EntryPoint=%016lx) !!!!\n",
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ImageBase,
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EntryPoint
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);
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}
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}
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