b422b62c01
1. Add DebugAgentPei driver to initialize Debug Agent in PEI phase. Add DebugAgentDxe driver to initialize Debug Agent in DXE phase. DebugAgentDxe driver could be loaded and unloaded in shell. 2. Update the SourceLevelDebugPkg so that the debug agent can be initialized in any phase: SEC, PEI or DXE. 3. Add an enhanced retry algorithm that provides a robust connection when data loss happens in the debug channel. 4. Clear DR7 register in exception handler. 5. Set the default serial port parameter to 0 instead of PCDs. 6. Build pointer of Mailbox in HOB instead of Mailbox itself, since HOB may be moved at DXE entry point function. 7. Raise TPL to prevent recursion from EFI timer interrupts in SerialIo.c. 8. Add one spin lock for accessing Mailbox when MP debugging supported. 9. Use more non-NULL library instances in SourceLevelDebugPkg DSC file, thus DebugAgentDxe.efi built from SourceLevelDebugPkg could work in shell. 10.Separate all operations about IDT table entry from SecDebugAgentLib.c into DebugAgent\DebugAgentCommon's arch sub-directory. 11.Enhance Debug Agent to avoid breaking by hardware SMI during DXE debugging phase. 12.Add supporting on mode switch code debugging. 13.Remove reset Host Controller operation in DebugCommunicationLibUsb.c to avoid impacting EDKII usb stack. 14.Fix debug timer interrupt missing issue after back from legacy code. Signed-off-by: Jeff Fan <jeff.fan@intel.com> Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Signed-off-by: Feng Tian <feng.tian@intel.com> Reviewed-by: Jeff Fan <jeff.fan@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Feng Tian <feng.tian@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14083 6f19259b-4bc3-4df7-8a09-765794883524
376 lines
8.5 KiB
NASM
376 lines
8.5 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2010 - 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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;
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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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; Module Name:
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;
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; AsmFuncs.asm
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;
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; Abstract:
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;
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; Debug interrupt handle functions.
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;
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;------------------------------------------------------------------------------
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#include "DebugException.h"
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externdef InterruptProcess:near
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data SEGMENT
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public Exception0Handle, TimerInterruptHandle, ExceptionStubHeaderSize
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ExceptionStubHeaderSize dw Exception1Handle - Exception0Handle ;
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CommonEntryAddr dq CommonEntry ;
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.code
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db 41h, 47h, 54h, 48h ; AGENT_HANDLER_SIGNATURE SIGNATURE_32('A','G','T','H')
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Exception0Handle:
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cli
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push rcx
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mov rcx, 0
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jmp qword ptr [CommonEntryAddr]
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Exception1Handle:
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cli
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push rcx
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mov rcx, 1
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jmp qword ptr [CommonEntryAddr]
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Exception2Handle:
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cli
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push rcx
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mov rcx, 2
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jmp qword ptr [CommonEntryAddr]
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Exception3Handle:
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cli
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push rcx
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mov rcx, 3
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jmp qword ptr [CommonEntryAddr]
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Exception4Handle:
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cli
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push rcx
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mov rcx, 4
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jmp qword ptr [CommonEntryAddr]
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Exception5Handle:
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cli
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push rcx
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mov rcx, 5
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jmp qword ptr [CommonEntryAddr]
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Exception6Handle:
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cli
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push rcx
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mov rcx, 6
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jmp qword ptr [CommonEntryAddr]
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Exception7Handle:
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cli
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push rcx
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mov rcx, 7
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jmp qword ptr [CommonEntryAddr]
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Exception8Handle:
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cli
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push rcx
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mov rcx, 8
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jmp qword ptr [CommonEntryAddr]
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Exception9Handle:
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cli
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push rcx
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mov rcx, 9
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jmp qword ptr [CommonEntryAddr]
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Exception10Handle:
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cli
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push rcx
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mov rcx, 10
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jmp qword ptr [CommonEntryAddr]
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Exception11Handle:
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cli
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push rcx
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mov rcx, 11
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jmp qword ptr [CommonEntryAddr]
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Exception12Handle:
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cli
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push rcx
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mov rcx, 12
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jmp qword ptr [CommonEntryAddr]
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Exception13Handle:
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cli
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push rcx
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mov rcx, 13
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jmp qword ptr [CommonEntryAddr]
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Exception14Handle:
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cli
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push rcx
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mov rcx, 14
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jmp qword ptr [CommonEntryAddr]
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Exception15Handle:
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cli
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push rcx
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mov rcx, 15
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jmp qword ptr [CommonEntryAddr]
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Exception16Handle:
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cli
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push rcx
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mov rcx, 16
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jmp qword ptr [CommonEntryAddr]
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Exception17Handle:
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cli
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push rcx
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mov rcx, 17
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jmp qword ptr [CommonEntryAddr]
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Exception18Handle:
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cli
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push rcx
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mov rcx, 18
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jmp qword ptr [CommonEntryAddr]
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Exception19Handle:
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cli
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push rcx
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mov rcx, 19
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jmp qword ptr [CommonEntryAddr]
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TimerInterruptHandle:
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cli
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push rcx
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mov rcx, 32
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jmp qword ptr [CommonEntryAddr]
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CommonEntry:
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; We need to determine if any extra data was pushed by the exception
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cmp rcx, DEBUG_EXCEPT_DOUBLE_FAULT
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je NoExtrPush
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cmp rcx, DEBUG_EXCEPT_INVALID_TSS
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je NoExtrPush
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cmp rcx, DEBUG_EXCEPT_SEG_NOT_PRESENT
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je NoExtrPush
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cmp rcx, DEBUG_EXCEPT_STACK_FAULT
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je NoExtrPush
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cmp rcx, DEBUG_EXCEPT_GP_FAULT
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je NoExtrPush
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cmp rcx, DEBUG_EXCEPT_PAGE_FAULT
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je NoExtrPush
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cmp rcx, DEBUG_EXCEPT_ALIGNMENT_CHECK
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je NoExtrPush
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push [rsp]
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mov qword ptr [rsp + 8], 0
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NoExtrPush:
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push rbp
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mov rbp, rsp
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; store UINT64 r8, r9, r10, r11, r12, r13, r14, r15;
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push r15
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push r14
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push r13
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push r12
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push r11
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push r10
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push r9
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push r8
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mov r8, cr8
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push r8
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; store UINT64 Rdi, Rsi, Rbp, Rsp, Rdx, Rcx, Rbx, Rax;
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push rax
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push rbx
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push qword ptr [rbp + 8] ; original rcx
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push rdx
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push qword ptr [rbp + 6 * 8] ; original rsp
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push qword ptr [rbp] ; original rbp
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push rsi
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push rdi
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;; UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;
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;; insure FXSAVE/FXRSTOR is enabled in CR4...
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;; ... while we're at it, make sure DE is also enabled...
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mov rax, cr4
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or rax, 208h
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mov cr4, rax
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push rax
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mov rax, cr3
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push rax
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mov rax, cr2
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push rax
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push 0
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mov rax, cr0
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push rax
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xor rax, rax
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mov rax, Ss
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push rax
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mov rax, Cs
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push rax
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mov rax, Ds
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push rax
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mov rax, Es
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push rax
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mov rax, Fs
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push rax
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mov rax, Gs
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push rax
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;; EIP
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mov rax, [rbp + 8 * 3] ; EIP
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push rax
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;; UINT64 Gdtr[2], Idtr[2];
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sub rsp, 16
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sidt fword ptr [rsp]
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sub rsp, 16
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sgdt fword ptr [rsp]
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;; UINT64 Ldtr, Tr;
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xor rax, rax
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str ax
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push rax
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sldt ax
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push rax
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;; EFlags
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mov rax, [rbp + 8 * 5]
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push rax
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;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
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mov rax, dr7
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push rax
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;; clear Dr7 while executing debugger itself
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xor rax, rax
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mov dr7, rax
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;; Dr6
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mov rax, dr6
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push rax
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;; insure all status bits in dr6 are clear...
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xor rax, rax
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mov dr6, rax
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mov rax, dr3
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push rax
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mov rax, dr2
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push rax
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mov rax, dr1
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push rax
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mov rax, dr0
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push rax
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sub rsp, 512
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mov rdi, rsp
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db 0fh, 0aeh, 00000111y ;fxsave [rdi]
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;; save the exception data
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push qword ptr [rbp + 16]
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;; Clear Direction Flag
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cld
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; call the C interrupt process function
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mov rdx, rsp ; Structure
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mov r15, rcx ; save vector in r15
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;
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; Per X64 calling convention, allocate maximum parameter stack space
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; and make sure RSP is 16-byte aligned
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;
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sub rsp, 32 + 8
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call InterruptProcess
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add rsp, 32 + 8
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;; skip the exception data
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add rsp, 8
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mov rsi, rsp
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db 0fh, 0aeh, 00001110y ; fxrstor [rsi]
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add rsp, 512
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;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
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pop rax
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mov dr0, rax
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pop rax
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mov dr1, rax
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pop rax
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mov dr2, rax
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pop rax
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mov dr3, rax
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;; skip restore of dr6. We cleared dr6 during the context save.
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add rsp, 8
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pop rax
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mov dr7, rax
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;; set EFlags
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pop qword ptr [rbp + 8 * 5]
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;; UINT64 Ldtr, Tr;
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;; UINT64 Gdtr[2], Idtr[2];
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;; Best not let anyone mess with these particular registers...
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add rsp, 24 * 2
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;; UINT64 Eip;
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pop qword ptr [rbp + 8 * 3] ; set EIP in stack
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;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;
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;; NOTE - modified segment registers could hang the debugger... We
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;; could attempt to insulate ourselves against this possibility,
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;; but that poses risks as well.
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;;
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pop rax
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pop rax
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pop rax
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mov es, rax
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pop rax
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mov ds, rax
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pop qword ptr [rbp + 8 * 4] ; Set CS in stack
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pop rax
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mov ss, rax
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;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4;
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pop rax
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mov cr0, rax
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add rsp, 8 ; skip for Cr1
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pop rax
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mov cr2, rax
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pop rax
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mov cr3, rax
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pop rax
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mov cr4, rax
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;; restore general register
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pop rdi
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pop rsi
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add rsp, 8 ; skip rbp
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add rsp, 8 ; skip rsp
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pop rdx
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pop rcx
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pop rbx
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pop rax
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pop r8
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mov cr8, r8
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; store UINT64 r8, r9, r10, r11, r12, r13, r14, r15;
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pop r8
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pop r9
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pop r10
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pop r11
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pop r12
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pop r13
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pop r14
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pop r15
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mov rsp, rbp
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pop rbp
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add rsp, 16 ; skip rcx and error code
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iretq
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END
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