mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-17 15:18:06 +01:00
543 lines
13 KiB
C
543 lines
13 KiB
C
/** @file
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Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "Edb.h"
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/**
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Check whether current IP is EBC BREAK3 instruction.
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@param Address EBC IP address.
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@retval TRUE Current IP is EBC BREAK3 instruction
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@retval FALSE Current IP is not EBC BREAK3 instruction
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**/
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BOOLEAN
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IsEBCBREAK3 (
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IN UINTN Address
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)
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{
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if (GET_OPCODE(Address) != OPCODE_BREAK) {
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return FALSE;
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}
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if (GET_OPERANDS (Address) != 3) {
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return FALSE;
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} else {
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return TRUE;
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}
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}
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/**
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Check whether the Address is already set in breakpoint.
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@param DebuggerPrivate EBC Debugger private data structure
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@param Address Breakpoint Address
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@retval TRUE breakpoint is found
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@retval FALSE breakpoint is not found
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**/
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BOOLEAN
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DebuggerBreakpointIsDuplicated (
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN UINTN Address
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)
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{
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UINTN Index;
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//
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// Go through each breakpoint context
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//
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for (Index = 0; Index < DebuggerPrivate->DebuggerBreakpointCount; Index++) {
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if (DebuggerPrivate->DebuggerBreakpointContext[Index].BreakpointAddress == Address) {
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//
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// Found it
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//
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return TRUE;
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}
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}
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//
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// Not found
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//
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return FALSE;
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}
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/**
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Add this breakpoint.
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@param DebuggerPrivate EBC Debugger private data structure
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@param Address Breakpoint Address
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@retval EFI_SUCCESS breakpoint added successfully
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@retval EFI_ALREADY_STARTED breakpoint is already added
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@retval EFI_OUT_OF_RESOURCES all the breakpoint entries are used
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**/
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EFI_STATUS
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DebuggerBreakpointAdd (
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN UINTN Address
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)
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{
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//
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// Check duplicated breakpoint
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//
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if (DebuggerBreakpointIsDuplicated (DebuggerPrivate, Address)) {
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EDBPrint (L"Breakpoint duplicated!\n");
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return EFI_ALREADY_STARTED;
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}
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//
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// Check whether the address is a breakpoint 3 instruction
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//
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if (IsEBCBREAK3 (Address)) {
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EDBPrint (L"Breakpoint can not be set on BREAK 3 instruction!\n");
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return EFI_ALREADY_STARTED;
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}
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if (DebuggerPrivate->DebuggerBreakpointCount >= EFI_DEBUGGER_BREAKPOINT_MAX) {
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EDBPrint (L"Breakpoint out of resource!\n");
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return EFI_OUT_OF_RESOURCES;
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}
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//
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// Set the breakpoint
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//
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DebuggerPrivate->DebuggerBreakpointContext[DebuggerPrivate->DebuggerBreakpointCount].BreakpointAddress = Address;
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DebuggerPrivate->DebuggerBreakpointContext[DebuggerPrivate->DebuggerBreakpointCount].State = TRUE;
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DebuggerPrivate->DebuggerBreakpointContext[DebuggerPrivate->DebuggerBreakpointCount].OldInstruction = 0;
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CopyMem (
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&DebuggerPrivate->DebuggerBreakpointContext[DebuggerPrivate->DebuggerBreakpointCount].OldInstruction,
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(VOID *)Address,
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sizeof(UINT16)
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);
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DebuggerPrivate->DebuggerBreakpointCount ++;
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//
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// Done
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//
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return EFI_SUCCESS;
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}
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/**
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Delete this breakpoint.
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@param DebuggerPrivate EBC Debugger private data structure
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@param Index Breakpoint Index
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@retval EFI_SUCCESS breakpoint deleted successfully
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@retval EFI_NOT_FOUND breakpoint not found
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**/
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EFI_STATUS
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DebuggerBreakpointDel (
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN UINTN Index
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)
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{
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UINTN BpIndex;
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if ((Index >= EFI_DEBUGGER_BREAKPOINT_MAX) ||
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(Index >= DebuggerPrivate->DebuggerBreakpointCount)) {
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return EFI_NOT_FOUND;
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}
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//
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// Delete this breakpoint
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//
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for (BpIndex = Index; BpIndex < DebuggerPrivate->DebuggerBreakpointCount - 1; BpIndex++) {
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DebuggerPrivate->DebuggerBreakpointContext[BpIndex] = DebuggerPrivate->DebuggerBreakpointContext[BpIndex + 1];
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}
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ZeroMem (
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&DebuggerPrivate->DebuggerBreakpointContext[BpIndex],
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sizeof(DebuggerPrivate->DebuggerBreakpointContext[BpIndex])
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);
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DebuggerPrivate->DebuggerBreakpointCount --;
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//
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// Done
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//
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return EFI_SUCCESS;
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}
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/**
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Disable this breakpoint.
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@param DebuggerPrivate EBC Debugger private data structure
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@param Index Breakpoint Index
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@retval EFI_SUCCESS breakpoint disabled successfully
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@retval EFI_NOT_FOUND breakpoint not found
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**/
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EFI_STATUS
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DebuggerBreakpointDis (
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN UINTN Index
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)
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{
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if ((Index >= EFI_DEBUGGER_BREAKPOINT_MAX) ||
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(Index >= DebuggerPrivate->DebuggerBreakpointCount)) {
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return EFI_NOT_FOUND;
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}
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//
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// Disable this breakpoint
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//
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DebuggerPrivate->DebuggerBreakpointContext[Index].State = FALSE;
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return EFI_SUCCESS;
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}
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/**
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Enable this breakpoint.
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@param DebuggerPrivate - EBC Debugger private data structure
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@param Index - Breakpoint Index
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@retval EFI_SUCCESS - breakpoint enabled successfully
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@retval EFI_NOT_FOUND - breakpoint not found
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**/
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EFI_STATUS
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DebuggerBreakpointEn (
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN UINTN Index
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)
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{
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if ((Index >= EFI_DEBUGGER_BREAKPOINT_MAX) ||
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(Index >= DebuggerPrivate->DebuggerBreakpointCount)) {
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return EFI_NOT_FOUND;
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}
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//
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// Enable this breakpoint
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//
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DebuggerPrivate->DebuggerBreakpointContext[Index].State = TRUE;
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return EFI_SUCCESS;
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}
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/**
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DebuggerCommand - BreakpointList.
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@param CommandArg - The argument for this command
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@param DebuggerPrivate - EBC Debugger private data structure
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@param ExceptionType - Exception type.
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@param SystemContext - EBC system context.
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@retval EFI_DEBUG_CONTINUE - formal return value
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**/
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EFI_DEBUG_STATUS
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DebuggerBreakpointList (
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IN CHAR16 *CommandArg,
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN OUT EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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UINTN Index;
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//
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// Check breakpoint cound
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//
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if (DebuggerPrivate->DebuggerBreakpointCount == 0) {
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EDBPrint (L"No Breakpoint\n");
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return EFI_DEBUG_CONTINUE;
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} else if (DebuggerPrivate->DebuggerBreakpointCount > EFI_DEBUGGER_BREAKPOINT_MAX) {
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EDBPrint (L"Breakpoint too many!\n");
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DebuggerPrivate->DebuggerBreakpointCount = 0;
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return EFI_DEBUG_CONTINUE;
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}
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//
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// Go through each breakpoint
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//
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EDBPrint (L"Breakpoint :\n");
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EDBPrint (L" Index Address Status\n");
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EDBPrint (L"======= ================== ========\n");
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//EDBPrint (L" 1 0xFFFFFFFF00000000 *\n");
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//EDBPrint (L" 12 0x00000000FFFFFFFF\n");
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for (Index = 0; Index < DebuggerPrivate->DebuggerBreakpointCount; Index++) {
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//
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// Print the breakpoint
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//
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EDBPrint (L" %2d 0x%016lx", Index, DebuggerPrivate->DebuggerBreakpointContext[Index].BreakpointAddress);
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if (DebuggerPrivate->DebuggerBreakpointContext[Index].State) {
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EDBPrint (L" *\n");
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} else {
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EDBPrint (L"\n");
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}
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}
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//
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// Done
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//
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return EFI_DEBUG_CONTINUE;
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}
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/**
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DebuggerCommand - BreakpointSet.
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@param CommandArg The argument for this command
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@param DebuggerPrivate EBC Debugger private data structure
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@param ExceptionType Exception type.
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@param SystemContext EBC system context.
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@retval EFI_DEBUG_CONTINUE - formal return value
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**/
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EFI_DEBUG_STATUS
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DebuggerBreakpointSet (
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IN CHAR16 *CommandArg,
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN OUT EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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UINTN Address;
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EFI_STATUS Status;
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if (CommandArg == NULL) {
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EDBPrint (L"BreakpointSet Argument error!\n");
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return EFI_DEBUG_CONTINUE;
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}
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//
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// Get breakpoint address
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//
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Status = Symboltoi (CommandArg, &Address);
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if (EFI_ERROR (Status)) {
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if (Status == EFI_NOT_FOUND) {
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Address = Xtoi(CommandArg);
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} else {
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//
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// Something wrong, let Symboltoi print error info.
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//
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EDBPrint (L"Command Argument error!\n");
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return EFI_DEBUG_CONTINUE;
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}
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}
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//
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// Add breakpoint
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//
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Status = DebuggerBreakpointAdd (DebuggerPrivate, Address);
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if (EFI_ERROR(Status)) {
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EDBPrint (L"BreakpointSet error!\n");
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}
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//
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// Done
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//
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return EFI_DEBUG_CONTINUE;
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}
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/**
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DebuggerCommand - BreakpointClear
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@param CommandArg The argument for this command
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@param DebuggerPrivate EBC Debugger private data structure
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@param ExceptionType Exception type.
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@param SystemContext EBC system context.
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@retval EFI_DEBUG_CONTINUE formal return value
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**/
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EFI_DEBUG_STATUS
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DebuggerBreakpointClear (
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IN CHAR16 *CommandArg,
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN OUT EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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UINTN Index;
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EFI_STATUS Status;
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if (CommandArg == NULL) {
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EDBPrint (L"BreakpointClear Argument error!\n");
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return EFI_DEBUG_CONTINUE;
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}
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if (StriCmp (CommandArg, L"*") == 0) {
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//
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// delete all breakpoint
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//
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DebuggerPrivate->DebuggerBreakpointCount = 0;
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ZeroMem (DebuggerPrivate->DebuggerBreakpointContext, sizeof(DebuggerPrivate->DebuggerBreakpointContext));
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EDBPrint (L"All the Breakpoint is cleared\n");
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return EFI_DEBUG_CONTINUE;
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}
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//
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// Get breakpoint index
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//
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Index = Atoi(CommandArg);
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if (Index == (UINTN) -1) {
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EDBPrint (L"BreakpointClear Argument error!\n");
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return EFI_DEBUG_CONTINUE;
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}
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if ((Index >= EFI_DEBUGGER_BREAKPOINT_MAX) ||
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(Index >= DebuggerPrivate->DebuggerBreakpointCount)) {
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EDBPrint (L"BreakpointClear error!\n");
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return EFI_DEBUG_CONTINUE;
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}
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//
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// Delete breakpoint
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//
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Status = DebuggerBreakpointDel (DebuggerPrivate, Index);
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if (EFI_ERROR(Status)) {
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EDBPrint (L"BreakpointClear error!\n");
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}
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//
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// Done
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//
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return EFI_DEBUG_CONTINUE;
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}
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/**
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DebuggerCommand - BreakpointDisable
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@param CommandArg The argument for this command
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@param DebuggerPrivate EBC Debugger private data structure
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@param ExceptionType Exception type.
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@param SystemContext EBC system context.
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@retval EFI_DEBUG_CONTINUE formal return value
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**/
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EFI_DEBUG_STATUS
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DebuggerBreakpointDisable (
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IN CHAR16 *CommandArg,
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN OUT EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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UINTN Index;
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EFI_STATUS Status;
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if (CommandArg == NULL) {
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EDBPrint (L"BreakpointDisable Argument error!\n");
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return EFI_DEBUG_CONTINUE;
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}
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if (StriCmp (CommandArg, L"*") == 0) {
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//
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// disable all breakpoint
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//
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for (Index = 0; Index < DebuggerPrivate->DebuggerBreakpointCount; Index++) {
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Status = DebuggerBreakpointDis (DebuggerPrivate, Index);
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}
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EDBPrint (L"All the Breakpoint is disabled\n");
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return EFI_DEBUG_CONTINUE;
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}
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//
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// Get breakpoint index
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//
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Index = Atoi(CommandArg);
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if (Index == (UINTN) -1) {
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EDBPrint (L"BreakpointDisable Argument error!\n");
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return EFI_DEBUG_CONTINUE;
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}
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//
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// Disable breakpoint
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//
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Status = DebuggerBreakpointDis (DebuggerPrivate, Index);
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if (EFI_ERROR(Status)) {
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EDBPrint (L"BreakpointDisable error!\n");
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}
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//
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// Done
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//
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return EFI_DEBUG_CONTINUE;
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}
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/**
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DebuggerCommand - BreakpointEnable.
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@param CommandArg The argument for this command
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@param DebuggerPrivate EBC Debugger private data structure
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@param ExceptionType Exception type.
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@param SystemContext EBC system context.
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@retval EFI_DEBUG_CONTINUE formal return value
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**/
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EFI_DEBUG_STATUS
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DebuggerBreakpointEnable (
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IN CHAR16 *CommandArg,
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IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN OUT EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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UINTN Index;
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EFI_STATUS Status;
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if (CommandArg == NULL) {
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EDBPrint (L"BreakpointEnable Argument error!\n");
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return EFI_DEBUG_CONTINUE;
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}
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if (StriCmp (CommandArg, L"*") == 0) {
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//
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// enable all breakpoint
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//
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for (Index = 0; Index < DebuggerPrivate->DebuggerBreakpointCount; Index++) {
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Status = DebuggerBreakpointEn (DebuggerPrivate, Index);
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}
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EDBPrint (L"All the Breakpoint is enabled\n");
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return EFI_DEBUG_CONTINUE;
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}
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//
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// Get breakpoint index
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//
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Index = Atoi(CommandArg);
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if (Index == (UINTN) -1) {
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EDBPrint (L"BreakpointEnable Argument error!\n");
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return EFI_DEBUG_CONTINUE;
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}
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//
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// Enable breakpoint
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//
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Status = DebuggerBreakpointEn (DebuggerPrivate, Index);
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if (EFI_ERROR(Status)) {
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EDBPrint (L"BreakpointEnable error!\n");
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}
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//
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// Done
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//
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return EFI_DEBUG_CONTINUE;
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}
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