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/** @file
CPU Exception Handler Library common functions.
Copyright (c) 2012 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "CpuExceptionCommon.h"
//
// Error code flag indicating whether or not an error code will be
// pushed on the stack if an exception occurs.
//
// 1 means an error code will be pushed, otherwise 0
//
CONST UINT32 mErrorCodeFlag = 0x20227d00;
//
// Define the maximum message length
//
#define MAX_DEBUG_MESSAGE_LENGTH 0x100
CONST CHAR8 mExceptionReservedStr[] = "Reserved";
CONST CHAR8 *mExceptionNameStr[] = {
"#DE - Divide Error",
"#DB - Debug",
"NMI Interrupt",
"#BP - Breakpoint",
"#OF - Overflow",
"#BR - BOUND Range Exceeded",
"#UD - Invalid Opcode",
"#NM - Device Not Available",
"#DF - Double Fault",
"Coprocessor Segment Overrun",
"#TS - Invalid TSS",
"#NP - Segment Not Present",
"#SS - Stack Fault Fault",
"#GP - General Protection",
"#PF - Page-Fault",
"Reserved",
"#MF - x87 FPU Floating-Point Error",
"#AC - Alignment Check",
"#MC - Machine-Check",
"#XM - SIMD floating-point",
"#VE - Virtualization",
"#CP - Control Protection",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"#VC - VMM Communication",
};
#define EXCEPTION_KNOWN_NAME_NUM (sizeof (mExceptionNameStr) / sizeof (CHAR8 *))
/**
Get ASCII format string exception name by exception type.
@param ExceptionType Exception type.
@return ASCII format string exception name.
**/
CONST CHAR8 *
GetExceptionNameStr (
IN EFI_EXCEPTION_TYPE ExceptionType
)
{
if ((UINTN)ExceptionType < EXCEPTION_KNOWN_NAME_NUM) {
return mExceptionNameStr[ExceptionType];
} else {
return mExceptionReservedStr;
}
}
/**
Prints a message to the serial port.
@param Format Format string for the message to print.
@param ... Variable argument list whose contents are accessed
based on the format string specified by Format.
**/
VOID
EFIAPI
InternalPrintMessage (
IN CONST CHAR8 *Format,
...
)
{
CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
VA_LIST Marker;
//
// Convert the message to an ASCII String
//
VA_START (Marker, Format);
AsciiVSPrint (Buffer, sizeof (Buffer), Format, Marker);
VA_END (Marker);
//
// Send the print string to a Serial Port
//
SerialPortWrite ((UINT8 *)Buffer, AsciiStrLen (Buffer));
}
/**
Find and display image base address and return image base and its entry point.
@param CurrentEip Current instruction pointer.
**/
VOID
DumpModuleImageInfo (
IN UINTN CurrentEip
)
{
EFI_STATUS Status;
UINTN Pe32Data;
VOID *PdbPointer;
VOID *EntryPoint;
Pe32Data = PeCoffSearchImageBase (CurrentEip);
if (Pe32Data == 0) {
InternalPrintMessage ("!!!! Can't find image information. !!!!\n");
} else {
//
// Find Image Base entry point
//
Status = PeCoffLoaderGetEntryPoint ((VOID *)Pe32Data, &EntryPoint);
if (EFI_ERROR (Status)) {
EntryPoint = NULL;
}
InternalPrintMessage ("!!!! Find image based on IP(0x%x) ", CurrentEip);
PdbPointer = PeCoffLoaderGetPdbPointer ((VOID *)Pe32Data);
if (PdbPointer != NULL) {
InternalPrintMessage ("%a", PdbPointer);
} else {
InternalPrintMessage ("(No PDB) ");
}
InternalPrintMessage (
" (ImageBase=%016lp, EntryPoint=%016p) !!!!\n",
(VOID *)Pe32Data,
EntryPoint
);
}
}
/**
Read and save reserved vector information
@param[in] VectorInfo Pointer to reserved vector list.
@param[out] ReservedVector Pointer to reserved vector data buffer.
@param[in] VectorCount Vector number to be updated.
@return EFI_SUCCESS Read and save vector info successfully.
@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
**/
EFI_STATUS
ReadAndVerifyVectorInfo (
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo,
OUT RESERVED_VECTORS_DATA *ReservedVector,
IN UINTN VectorCount
)
{
while (VectorInfo->Attribute != EFI_VECTOR_HANDOFF_LAST_ENTRY) {
if (VectorInfo->Attribute > EFI_VECTOR_HANDOFF_HOOK_AFTER) {
//
// If vector attrubute is invalid
//
return EFI_INVALID_PARAMETER;
}
if (VectorInfo->VectorNumber < VectorCount) {
ReservedVector[VectorInfo->VectorNumber].Attribute = VectorInfo->Attribute;
}
VectorInfo++;
}
return EFI_SUCCESS;
}
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