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ARM Packages: Removed trailing spaces

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Trailing spaces create issue/warning when generating/applying patches.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Reviewed-By: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15833 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ronald Cron
2014-08-19 13:29:52 +00:00
committed by oliviermartin
parent 62d441fb17
commit 3402aac7d9
554 changed files with 6333 additions and 6345 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.S
View File

@@ -1,4 +1,4 @@
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
#
# Use ARMv6 instruction to operate on a single stack
#
@@ -19,7 +19,7 @@
This is the stack constructed by the exception handler (low address to high address)
# R0 - IFAR is EFI_SYSTEM_CONTEXT for ARM
Reg Offset
=== ======
=== ======
R0 0x00 # stmfd SP!,{R0-R12}
R1 0x04
R2 0x08
@@ -41,14 +41,14 @@ This is the stack constructed by the exception handler (low address to high addr
DFAR 0x48
IFSR 0x4c
IFAR 0x50
LR 0x54 # SVC Link register (we need to restore it)
LR 0x58 # pushed by srsfd
CPSR 0x5c
LR 0x58 # pushed by srsfd
CPSR 0x5c
*/
GCC_ASM_EXPORT(ExceptionHandlersStart)
GCC_ASM_EXPORT(ExceptionHandlersEnd)
@@ -175,55 +175,55 @@ ASM_PFX(CommonExceptionEntry):
ASM_PFX(ExceptionHandlersEnd):
//
// This code runs from CpuDxe driver loaded address. It is patched into
// This code runs from CpuDxe driver loaded address. It is patched into
// CommonExceptionEntry.
//
ASM_PFX(AsmCommonExceptionEntry):
mrc p15, 0, R1, c6, c0, 2 @ Read IFAR
str R1, [SP, #0x50] @ Store it in EFI_SYSTEM_CONTEXT_ARM.IFAR
str R1, [SP, #0x50] @ Store it in EFI_SYSTEM_CONTEXT_ARM.IFAR
mrc p15, 0, R1, c5, c0, 1 @ Read IFSR
str R1, [SP, #0x4c] @ Store it in EFI_SYSTEM_CONTEXT_ARM.IFSR
mrc p15, 0, R1, c6, c0, 0 @ Read DFAR
str R1, [SP, #0x48] @ Store it in EFI_SYSTEM_CONTEXT_ARM.DFAR
mrc p15, 0, R1, c5, c0, 0 @ Read DFSR
str R1, [SP, #0x44] @ Store it in EFI_SYSTEM_CONTEXT_ARM.DFSR
ldr R1, [SP, #0x5c] @ srsdb saved pre-exception CPSR on the stack
ldr R1, [SP, #0x5c] @ srsdb saved pre-exception CPSR on the stack
str R1, [SP, #0x40] @ Store it in EFI_SYSTEM_CONTEXT_ARM.CPSR
add R2, SP, #0x38 @ Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
and R3, R1, #0x1f @ Check CPSR to see if User or System Mode
cmp R3, #0x1f @ if ((CPSR == 0x10) || (CPSR == 0x1df))
cmpne R3, #0x10 @
cmpne R3, #0x10 @
stmeqed R2, {lr}^ @ save unbanked lr
@ else
@ else
stmneed R2, {lr} @ save SVC lr
ldr R5, [SP, #0x58] @ PC is the LR pushed by srsfd
ldr R5, [SP, #0x58] @ PC is the LR pushed by srsfd
@ Check to see if we have to adjust for Thumb entry
sub r4, r0, #1 @ if (ExceptionType == 1 || ExceptionType ==2)) {
cmp r4, #1 @ // UND & SVC have differnt LR adjust for Thumb
cmp r4, #1 @ // UND & SVC have differnt LR adjust for Thumb
bhi NoAdjustNeeded
tst r1, #0x20 @ if ((CPSR & T)) == T) { // Thumb Mode on entry
tst r1, #0x20 @ if ((CPSR & T)) == T) { // Thumb Mode on entry
addne R5, R5, #2 @ PC += 2@
str R5,[SP,#0x58] @ Update LR value pused by srsfd
str R5,[SP,#0x58] @ Update LR value pused by srsfd
NoAdjustNeeded:
str R5, [SP, #0x3c] @ Store it in EFI_SYSTEM_CONTEXT_ARM.PC
sub R1, SP, #0x60 @ We pused 0x60 bytes on the stack
str R1, [SP, #0x34] @ Store it in EFI_SYSTEM_CONTEXT_ARM.SP
@ R0 is ExceptionType
mov R1,SP @ R1 is SystemContext
/*
sub R1, SP, #0x60 @ We pused 0x60 bytes on the stack
str R1, [SP, #0x34] @ Store it in EFI_SYSTEM_CONTEXT_ARM.SP
@ R0 is ExceptionType
mov R1,SP @ R1 is SystemContext
/*
VOID
EFIAPI
GdbExceptionHandler (
@@ -231,28 +231,28 @@ GdbExceptionHandler (
IN OUT EFI_SYSTEM_CONTEXT SystemContext R1
)
*/
*/
blx ASM_PFX(GdbExceptionHandler) @ Call exception handler
ldr R1,[SP,#0x3c] @ EFI_SYSTEM_CONTEXT_ARM.PC
str R1,[SP,#0x58] @ Store it back to srsfd stack slot so it can be restored
str R1,[SP,#0x58] @ Store it back to srsfd stack slot so it can be restored
ldr R1,[SP,#0x40] @ EFI_SYSTEM_CONTEXT_ARM.CPSR
str R1,[SP,#0x5c] @ Store it back to srsfd stack slot so it can be restored
str R1,[SP,#0x5c] @ Store it back to srsfd stack slot so it can be restored
add R3, SP, #0x54 @ Make R3 point to SVC LR saved on entry
add R2, SP, #0x38 @ Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
and R1, R1, #0x1f @ Check to see if User or System Mode
cmp R1, #0x1f @ if ((CPSR == 0x10) || (CPSR == 0x1f))
cmpne R1, #0x10 @
cmpne R1, #0x10 @
ldmeqed R2, {lr}^ @ restore unbanked lr
@ else
ldmneed R3, {lr} @ restore SVC lr, via ldmfd SP!, {LR}
ldmfd SP!,{R0-R12} @ Restore general purpose registers
@ Exception handler can not change SP
add SP,SP,#0x20 @ Clear out the remaining stack space
ldmfd SP!,{LR} @ restore the link register for this context
rfefd SP! @ return from exception via srsfd stack slot

80
EmbeddedPkg/Library/GdbDebugAgent/Arm/ExceptionSupport.ARMv6.asm
View File

@@ -1,4 +1,4 @@
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
//
// Use ARMv6 instruction to operate on a single stack
//
@@ -21,7 +21,7 @@
This is the stack constructed by the exception handler (low address to high address)
# R0 - IFAR is EFI_SYSTEM_CONTEXT for ARM
Reg Offset
=== ======
=== ======
R0 0x00 # stmfd SP!,{R0-R12}
R1 0x04
R2 0x08
@@ -43,15 +43,15 @@ This is the stack constructed by the exception handler (low address to high addr
DFAR 0x48
IFSR 0x4c
IFAR 0x50
LR 0x54 # SVC Link register (we need to restore it)
LR 0x58 # pushed by srsfd
CPSR 0x5c
LR 0x58 # pushed by srsfd
CPSR 0x5c
*/
EXPORT ExceptionHandlersStart
EXPORT ExceptionHandlersEnd
EXPORT CommonExceptionEntry
@@ -60,7 +60,7 @@ This is the stack constructed by the exception handler (low address to high addr
PRESERVE8
AREA DxeExceptionHandlers, CODE, READONLY
//
// This code gets copied to the ARM vector table
// ExceptionHandlersStart - ExceptionHandlersEnd gets copied
@@ -101,7 +101,7 @@ UndefinedInstructionEntry
stmfd SP!,{R0-R12} ; Store the register state
mov R0,#1 ; ExceptionType
ldr R1,CommonExceptionEntry;
ldr R1,CommonExceptionEntry;
bx R1
SoftwareInterruptEntry
@@ -173,55 +173,55 @@ CommonExceptionEntry
ExceptionHandlersEnd
//
// This code runs from CpuDxe driver loaded address. It is patched into
// This code runs from CpuDxe driver loaded address. It is patched into
// CommonExceptionEntry.
//
AsmCommonExceptionEntry
mrc p15, 0, R1, c6, c0, 2 ; Read IFAR
str R1, [SP, #0x50] ; Store it in EFI_SYSTEM_CONTEXT_ARM.IFAR
str R1, [SP, #0x50] ; Store it in EFI_SYSTEM_CONTEXT_ARM.IFAR
mrc p15, 0, R1, c5, c0, 1 ; Read IFSR
str R1, [SP, #0x4c] ; Store it in EFI_SYSTEM_CONTEXT_ARM.IFSR
mrc p15, 0, R1, c6, c0, 0 ; Read DFAR
str R1, [SP, #0x48] ; Store it in EFI_SYSTEM_CONTEXT_ARM.DFAR
mrc p15, 0, R1, c5, c0, 0 ; Read DFSR
str R1, [SP, #0x44] ; Store it in EFI_SYSTEM_CONTEXT_ARM.DFSR
ldr R1, [SP, #0x5c] ; srsfd saved pre-exception CPSR on the stack
ldr R1, [SP, #0x5c] ; srsfd saved pre-exception CPSR on the stack
str R1, [SP, #0x40] ; Store it in EFI_SYSTEM_CONTEXT_ARM.CPSR
add R2, SP, #0x38 ; Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
and R3, R1, #0x1f ; Check CPSR to see if User or System Mode
cmp R3, #0x1f ; if ((CPSR == 0x10) || (CPSR == 0x1df))
cmpne R3, #0x10 ;
cmpne R3, #0x10 ;
stmeqed R2, {lr}^ ; save unbanked lr
; else
; else
stmneed R2, {lr} ; save SVC lr
ldr R5, [SP, #0x58] ; PC is the LR pushed by srsfd
ldr R5, [SP, #0x58] ; PC is the LR pushed by srsfd
; Check to see if we have to adjust for Thumb entry
sub r4, r0, #1 ; if (ExceptionType == 1 || ExceptionType ==2)) {
cmp r4, #1 ; // UND & SVC have differnt LR adjust for Thumb
cmp r4, #1 ; // UND & SVC have differnt LR adjust for Thumb
bhi NoAdjustNeeded
tst r1, #0x20 ; if ((CPSR & T)) == T) { // Thumb Mode on entry
tst r1, #0x20 ; if ((CPSR & T)) == T) { // Thumb Mode on entry
addne R5, R5, #2 ; PC += 2;
str R5,[SP,#0x58] ; Update LR value pused by srsfd
str R5,[SP,#0x58] ; Update LR value pused by srsfd
NoAdjustNeeded
str R5, [SP, #0x3c] ; Store it in EFI_SYSTEM_CONTEXT_ARM.PC
sub R1, SP, #0x60 ; We pused 0x60 bytes on the stack
str R1, [SP, #0x34] ; Store it in EFI_SYSTEM_CONTEXT_ARM.SP
; R0 is ExceptionType
mov R1,SP ; R1 is SystemContext
/*
sub R1, SP, #0x60 ; We pused 0x60 bytes on the stack
str R1, [SP, #0x34] ; Store it in EFI_SYSTEM_CONTEXT_ARM.SP
; R0 is ExceptionType
mov R1,SP ; R1 is SystemContext
/*
VOID
EFIAPI
GdbExceptionHandler (
@@ -231,29 +231,29 @@ GdbExceptionHandler (
*/
blx GdbExceptionHandler ; Call exception handler
ldr R1,[SP,#0x3c] ; EFI_SYSTEM_CONTEXT_ARM.PC
str R1,[SP,#0x58] ; Store it back to srsfd stack slot so it can be restored
str R1,[SP,#0x58] ; Store it back to srsfd stack slot so it can be restored
ldr R1,[SP,#0x40] ; EFI_SYSTEM_CONTEXT_ARM.CPSR
str R1,[SP,#0x5c] ; Store it back to srsfd stack slot so it can be restored
str R1,[SP,#0x5c] ; Store it back to srsfd stack slot so it can be restored
add R3, SP, #0x54 ; Make R3 point to SVC LR saved on entry
add R2, SP, #0x38 ; Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
and R1, R1, #0x1f ; Check to see if User or System Mode
cmp R1, #0x1f ; if ((CPSR == 0x10) || (CPSR == 0x1f))
cmpne R1, #0x10 ;
cmpne R1, #0x10 ;
ldmeqed R2, {lr}^ ; restore unbanked lr
; else
ldmneed R3, {lr} ; restore SVC lr, via ldmfd SP!, {LR}
ldmfd SP!,{R0-R12} ; Restore general purpose registers
; Exception handler can not change SP
add SP,SP,#0x20 ; Clear out the remaining stack space
ldmfd SP!,{LR} ; restore the link register for this context
rfefd SP! ; return from exception via srsfd stack slot
END

128
EmbeddedPkg/Library/GdbDebugAgent/Arm/Processor.c
View File

@@ -2,7 +2,7 @@
Processor specific parts of the GDB stub
Copyright (c) 2008 - 2010, Apple Inc. 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
@@ -48,8 +48,8 @@ AsmCommonExceptionEntry (
//
EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
{ EXCEPT_ARM_SOFTWARE_INTERRUPT, GDB_SIGTRAP },
{ EXCEPT_ARM_UNDEFINED_INSTRUCTION, GDB_SIGTRAP },
{ EXCEPT_ARM_PREFETCH_ABORT, GDB_SIGTRAP },
{ EXCEPT_ARM_UNDEFINED_INSTRUCTION, GDB_SIGTRAP },
{ EXCEPT_ARM_PREFETCH_ABORT, GDB_SIGTRAP },
{ EXCEPT_ARM_DATA_ABORT, GDB_SIGTRAP }, // GDB_SIGEMT
{ EXCEPT_ARM_RESERVED, GDB_SIGTRAP }, // GDB_SIGILL
{ EXCEPT_ARM_FIQ, GDB_SIGINT } // Used for ctrl-c
@@ -113,8 +113,8 @@ UINTN gRegisterOffsets[] = {
/**
Return the number of entries in the gExceptionType[]
@retval UINTN, the number of entries in the gExceptionType[] array.
@retval UINTN, the number of entries in the gExceptionType[] array.
**/
UINTN
MaxEfiException (
@@ -128,10 +128,10 @@ MaxEfiException (
/**
Check to see if the ISA is supported.
Check to see if the ISA is supported.
ISA = Instruction Set Architecture
@retval TRUE if Isa is supported
@retval TRUE if Isa is supported
**/
BOOLEAN
@@ -150,14 +150,14 @@ CheckIsa (
/**
This takes in the register number and the System Context, and returns a pointer to the RegNumber-th register in gdb ordering
It is, by default, set to find the register pointer of the ARM member
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
@param RegNumber The register to which we want to find a pointer
@retval the pointer to the RegNumber-th pointer
**/
**/
UINTN *
FindPointerToRegister(
IN EFI_SYSTEM_CONTEXT SystemContext,
IN UINTN RegNumber
IN UINTN RegNumber
)
{
UINT8 *TempPtr;
@@ -183,7 +183,7 @@ BasicReadRegister (
{
UINTN RegSize;
CHAR8 Char;
if (gRegisterOffsets[RegNumber] > 0xF00) {
AsciiSPrint(OutBufPtr, 9, "00000000");
OutBufPtr += 8;
@@ -197,13 +197,13 @@ BasicReadRegister (
Char = Char - 'A' + 'a';
}
*OutBufPtr++ = Char;
Char = mHexToStr[(UINT8)((*FindPointerToRegister(SystemContext, RegNumber) >> RegSize) & 0xf)];
if ((Char >= 'A') && (Char <= 'F')) {
Char = Char - 'A' + 'a';
}
*OutBufPtr++ = Char;
RegSize = RegSize + 8;
}
return OutBufPtr;
@@ -211,7 +211,7 @@ BasicReadRegister (
/**
Reads the n-th register's value into an output buffer and sends it as a packet
Reads the n-th register's value into an output buffer and sends it as a packet
@param SystemContext Register content at time of the exception
@param InBuffer Pointer to the input buffer received from gdb server
**/
@@ -224,29 +224,29 @@ ReadNthRegister (
UINTN RegNumber;
CHAR8 OutBuffer[9]; // 1 reg=8 hex chars, and the end '\0' (escape seq)
CHAR8 *OutBufPtr; // pointer to the output buffer
RegNumber = AsciiStrHexToUintn (&InBuffer[1]);
if (RegNumber >= (sizeof (gRegisterOffsets)/sizeof (UINTN))) {
SendError (GDB_EINVALIDREGNUM);
SendError (GDB_EINVALIDREGNUM);
return;
}
OutBufPtr = OutBuffer;
OutBufPtr = BasicReadRegister (SystemContext, RegNumber, OutBufPtr);
*OutBufPtr = '\0'; // the end of the buffer
SendPacket(OutBuffer);
}
/**
Reads the general registers into an output buffer and sends it as a packet
Reads the general registers into an output buffer and sends it as a packet
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
ReadGeneralRegisters (
ReadGeneralRegisters (
IN EFI_SYSTEM_CONTEXT SystemContext
)
{
@@ -254,13 +254,13 @@ ReadGeneralRegisters (
// a UINT32 takes 8 ascii characters
CHAR8 OutBuffer[(sizeof (gRegisterOffsets) * 2) + 1];
CHAR8 *OutBufPtr;
// It is not safe to allocate pool here....
OutBufPtr = OutBuffer;
for (Index = 0; Index < (sizeof (gRegisterOffsets)/sizeof (UINTN)); Index++) {
OutBufPtr = BasicReadRegister (SystemContext, Index, OutBufPtr);
}
*OutBufPtr = '\0';
SendPacket(OutBuffer);
}
@@ -283,7 +283,7 @@ BasicWriteRegister (
UINTN RegSize;
UINTN TempValue; // the value transferred from a hex char
UINT32 NewValue; // the new value of the RegNumber-th Register
if (gRegisterOffsets[RegNumber] > 0xF00) {
return InBufPtr + 8;
}
@@ -292,21 +292,21 @@ BasicWriteRegister (
RegSize = 0;
while (RegSize < 32) {
TempValue = HexCharToInt(*InBufPtr++);
if ((INTN)TempValue < 0) {
SendError (GDB_EBADMEMDATA);
SendError (GDB_EBADMEMDATA);
return NULL;
}
NewValue += (TempValue << (RegSize+4));
TempValue = HexCharToInt(*InBufPtr++);
if ((INTN)TempValue < 0) {
SendError (GDB_EBADMEMDATA);
SendError (GDB_EBADMEMDATA);
return NULL;
}
NewValue += (TempValue << RegSize);
NewValue += (TempValue << RegSize);
RegSize = RegSize + 8;
}
*(FindPointerToRegister(SystemContext, RegNumber)) = NewValue;
@@ -329,19 +329,19 @@ WriteNthRegister (
CHAR8 RegNumBuffer[MAX_REG_NUM_BUF_SIZE]; // put the 'n..' part of the message into this array
CHAR8 *RegNumBufPtr;
CHAR8 *InBufPtr; // pointer to the input buffer
// find the register number to write
InBufPtr = &InBuffer[1];
RegNumBufPtr = RegNumBuffer;
while (*InBufPtr != '=') {
*RegNumBufPtr++ = *InBufPtr++;
}
}
*RegNumBufPtr = '\0';
RegNumber = AsciiStrHexToUintn (RegNumBuffer);
RegNumber = AsciiStrHexToUintn (RegNumBuffer);
// check if this is a valid Register Number
if (RegNumber >= (sizeof (gRegisterOffsets)/sizeof (UINTN))) {
SendError (GDB_EINVALIDREGNUM);
SendError (GDB_EINVALIDREGNUM);
return;
}
InBufPtr++; // skips the '=' character
@@ -369,21 +369,21 @@ WriteGeneralRegisters (
UINTN RegisterCount = (sizeof (gRegisterOffsets)/sizeof (UINTN));
MinLength = (RegisterCount * 8) + 1; // 'G' plus the registers in ASCII format
if (AsciiStrLen(InBuffer) < MinLength) {
//Bad message. Message is not the right length
SendError (GDB_EBADBUFSIZE);
//Bad message. Message is not the right length
SendError (GDB_EBADBUFSIZE);
return;
}
InBufPtr = &InBuffer[1];
// Read the new values for the registers from the input buffer to an array, NewValueArray.
// The values in the array are in the gdb ordering
for(i = 0; i < RegisterCount; i++) {
InBufPtr = BasicWriteRegister (SystemContext, i, InBufPtr);
}
SendSuccess ();
}
@@ -391,10 +391,10 @@ WriteGeneralRegisters (
/**
Continue. addr is Address to resume. If addr is omitted, resume at current
Continue. addr is Address to resume. If addr is omitted, resume at current
Address.
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
@@ -405,15 +405,15 @@ ContinueAtAddress (
{
if (PacketData[1] != '\0') {
SystemContext.SystemContextArm->PC = AsciiStrHexToUintn(&PacketData[1]);
}
}
}
/** ‘s [addr ]’
Single step. addr is the Address at which to resume. If addr is omitted, resume
Single step. addr is the Address at which to resume. If addr is omitted, resume
at same Address.
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
@@ -448,9 +448,9 @@ RemoveBreakPoint (
/**
Send the T signal with the given exception type (in gdb order) and possibly
Send the T signal with the given exception type (in gdb order) and possibly
with n:r pairs related to the watchpoints
@param SystemContext Register content at time of the exception
@param GdbExceptionType GDB exception type
**/
@@ -467,13 +467,13 @@ ProcessorSendTSignal (
/**
FIQ state is only changed by FIQ exception. We don't want to take FIQ
ticks in the GDB stub. The stub disables FIQ on entry, but this is the
ticks in the GDB stub. The stub disables FIQ on entry, but this is the
third instruction that executes in the execption handler. Thus we have
a crack we need to test for.
@param PC PC of execption
@return TRUE We are in the GDB stub exception preamble
@return TRUE We are in the GDB stub exception preamble
@return FALSE We are not in GDB stub code
**/
BOOLEAN
@@ -495,21 +495,21 @@ InFiqCrack (
/**
Check to see if this exception is related to ctrl-c handling.
In this scheme we dedicate FIQ to the ctrl-c handler so it is
independent of the rest of the system.
SaveAndSetDebugTimerInterrupt () can be used to
In this scheme we dedicate FIQ to the ctrl-c handler so it is
independent of the rest of the system.
SaveAndSetDebugTimerInterrupt () can be used to
@param ExceptionType Exception that is being processed
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
@return TRUE This was a ctrl-c check that did not find a ctrl-c
@return FALSE This was not a ctrl-c check or some one hit ctrl-c
**/
BOOLEAN
ProcessorControlC (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
ProcessorControlC (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
CHAR8 Char;
@@ -534,7 +534,7 @@ ProcessorControlC (
Return = TRUE;
break;
}
Char = GdbGetChar ();
if (Char == 0x03) {
//
@@ -622,7 +622,7 @@ InitializeDebugAgent (
IN VOID *Context, OPTIONAL
IN DEBUG_AGENT_CONTINUE Function OPTIONAL
)
{
{
UINTN Offset;
UINTN Length;
BOOLEAN IrqEnabled;
@@ -647,7 +647,7 @@ InitializeDebugAgent (
VectorBase = (UINT32 *)(UINTN)PcdGet32 (PcdCpuVectorBaseAddress);
// Copy our assembly code into the page that contains the exception vectors.
// Copy our assembly code into the page that contains the exception vectors.
CopyMem ((VOID *)VectorBase, (VOID *)ExceptionHandlersStart, Length);
//

224
EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.c
View File

@@ -34,7 +34,7 @@ CHAR8 gXferLibraryBuffer[2000];
GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mHexToStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
// add-symbol-file c:/work/edk2/Build/BeagleBoard/DEBUG_ARMGCC/ARM/BeagleBoardPkg/Sec/Sec/DEBUG/BeagleBoardSec.dll 0x80008360
// add-symbol-file c:/work/edk2/Build/BeagleBoard/DEBUG_ARMGCC/ARM/BeagleBoardPkg/Sec/Sec/DEBUG/BeagleBoardSec.dll 0x80008360
CHAR8 *qXferHack = "<library name=\"c:/work/edk2/Build/BeagleBoard/DEBUG_ARMGCC/ARM/BeagleBoardPkg/Sec/Sec/DEBUG/BeagleBoardSec.dll\"><segment address=\"0x80008360\"/></library>";
UINTN
@@ -52,7 +52,7 @@ gXferObjectReadResponse (
*OutBufPtr++ = Type;
Count = 1;
// Binary data encoding
// Binary data encoding
OutBufPtr = gOutBuffer;
while (*Str != '\0') {
Char = *Str++;
@@ -68,42 +68,42 @@ gXferObjectReadResponse (
*OutBufPtr = '\0' ; // the end of the buffer
SendPacket (gOutBuffer);
return Count;
}
/**
/**
Process "qXfer:object:read:annex:offset,length" request.
Returns an XML document that contains loaded libraries. In our case it is
Returns an XML document that contains loaded libraries. In our case it is
infomration in the EFI Debug Inmage Table converted into an XML document.
GDB will call with an arbitrary length (it can't know the real length and
will reply with chunks of XML that are easy for us to deal with. Gdb will
GDB will call with an arbitrary length (it can't know the real length and
will reply with chunks of XML that are easy for us to deal with. Gdb will
keep calling until we say we are done. XML doc looks like:
<library-list>
<library name="/a/a/c/d.dSYM"><segment address="0x10000000"/></library>
<library name="/a/m/e/e.pdb"><segment address="0x20000000"/></library>
<library name="/a/l/f/f.dll"><segment address="0x30000000"/></library>
</library-list>
Since we can not allocate memory in interupt context this module has
Since we can not allocate memory in interupt context this module has
assumptions about how it will get called:
1) Length will generally be max remote packet size (big enough)
2) First Offset of an XML document read needs to be 0
3) This code will return back small chunks of the XML document on every read.
Each subseqent call will ask for the next availble part of the document.
Note: The only variable size element in the XML is:
" <library name=\"%s\"><segment address=\"%p\"/></library>\n" and it is
" <library name=\"%s\"><segment address=\"%p\"/></library>\n" and it is
based on the file path and name of the symbol file. If the symbol file name
is bigger than the max gdb remote packet size we could update this code
to respond back in chunks.
@param Offset offset into special data area
@param Length number of bytes to read starting at Offset
@param Length number of bytes to read starting at Offset
**/
VOID
QxferLibrary (
@@ -134,13 +134,13 @@ TransferFromInBufToMem (
{
CHAR8 c1;
CHAR8 c2;
while (Length-- > 0) {
c1 = (CHAR8)HexCharToInt (*NewData++);
c2 = (CHAR8)HexCharToInt (*NewData++);
if ((c1 < 0) || (c2 < 0)) {
SendError (GDB_EBADMEMDATA);
SendError (GDB_EBADMEMDATA);
return;
}
*Address++ = (UINT8)((c1 << 4) + c2);
@@ -171,7 +171,7 @@ TransferFromMemToOutBufAndSend (
OutBufPtr = OutBuffer;
while (Length > 0) {
Char = mHexToStr[*Address >> 4];
if ((Char >= 'A') && (Char <= 'F')) {
Char = Char - 'A' + 'a';
@@ -196,16 +196,16 @@ TransferFromMemToOutBufAndSend (
/**
Send a GDB Remote Serial Protocol Packet
$PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
$PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
the packet teminating character '#' and the two digit checksum.
If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up
If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up
in an infinit loop. This is so if you unplug the debugger code just keeps running
@param PacketData Payload data for the packet
@param PacketData Payload data for the packet
@retval Number of bytes of packet data sent.
**/
@@ -219,7 +219,7 @@ SendPacket (
CHAR8 *Ptr;
CHAR8 TestChar;
UINTN Count;
Timeout = PcdGet32 (PcdGdbMaxPacketRetryCount);
Count = 0;
@@ -231,38 +231,38 @@ SendPacket (
// Only try a finite number of times so we don't get stuck in the loop
return Count;
}
// Packet prefix
GdbPutChar ('$');
for (CheckSum = 0, Count =0 ; *Ptr != '\0'; Ptr++, Count++) {
GdbPutChar (*Ptr);
CheckSum = CheckSum + *Ptr;
}
// Packet terminating character and checksum
// Packet terminating character and checksum
GdbPutChar ('#');
GdbPutChar (mHexToStr[CheckSum >> 4]);
GdbPutChar (mHexToStr[CheckSum & 0x0F]);
TestChar = GdbGetChar ();
} while (TestChar != '+');
return Count;
}
/**
Receive a GDB Remote Serial Protocol Packet
$PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
$PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
the packet teminating character '#' and the two digit checksum.
If host re-starts sending a packet without ending the previous packet, only the last valid packet is proccessed.
(In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.)
If an ack '+' is not sent resend the packet
@param PacketData Payload data for the packet
@param PacketData Payload data for the packet
@retval Number of bytes of packet data received.
@@ -278,16 +278,16 @@ ReceivePacket (
CHAR8 Char;
CHAR8 SumString[3];
CHAR8 TestChar;
ZeroMem (PacketData, PacketDataSize);
for (;;) {
// wait for the start of a packet
TestChar = GdbGetChar ();
while (TestChar != '$') {
TestChar = GdbGetChar ();
};
retry:
for (Index = 0, CheckSum = 0; Index < (PacketDataSize - 1); Index++) {
Char = GdbGetChar ();
@@ -307,14 +307,14 @@ ReceivePacket (
continue;
}
SumString[0] = GdbGetChar ();
SumString[0] = GdbGetChar ();
SumString[1] = GdbGetChar ();
SumString[2] = '\0';
if (AsciiStrHexToUintn (SumString) == CheckSum) {
// Ack: Success
GdbPutChar ('+');
// Null terminate the callers string
PacketData[Index] = '\0';
return Index;
@@ -323,27 +323,27 @@ ReceivePacket (
GdbPutChar ('-');
}
}
//return 0;
}
/**
Empties the given buffer
Empties the given buffer
@param Buf pointer to the first element in buffer to be emptied
**/
VOID
EmptyBuffer (
EmptyBuffer (
IN CHAR8 *Buf
)
{
{
*Buf = '\0';
}
/**
Converts an 8-bit Hex Char into a INTN.
@param Char the hex character to be converted into UINTN
@retval a INTN, from 0 to 15, that corressponds to Char
-1 if Char is not a hex character
@@ -360,7 +360,7 @@ HexCharToInt (
} else if ((Char >= '0') && (Char <= '9')) {
return Char - '0';
} else { // if not a hex value, return a negative value
return -1;
return -1;
}
}
@@ -371,7 +371,7 @@ CHAR8 *gError = "E__";
Send an error with the given error number after converting to hex.
The error number is put into the buffer in hex. '255' is the biggest errno we can send.
ex: 162 will be sent as A2.
@param errno the error number that will be sent
**/
VOID
@@ -385,7 +385,7 @@ SendError (
//
gError[1] = mHexToStr [ErrorNum >> 4];
gError[2] = mHexToStr [ErrorNum & 0x0f];
SendPacket (gError); // send buffer
}
@@ -398,7 +398,7 @@ VOID
EFIAPI
SendSuccess (
VOID
)
)
{
SendPacket ("OK"); // send buffer
}
@@ -407,12 +407,12 @@ SendSuccess (
/**
Send empty packet to specify that particular command/functionality is not supported.
**/
VOID
EFIAPI
VOID
EFIAPI
SendNotSupported (
VOID
)
{
VOID
)
{
SendPacket ("");
}
@@ -422,17 +422,17 @@ SendNotSupported (
/**
Translates the EFI mapping to GDB mapping
@param EFIExceptionType EFI Exception that is being processed
@retval UINTN that corresponds to EFIExceptionType's GDB exception type number
**/
UINT8
ConvertEFItoGDBtype (
ConvertEFItoGDBtype (
IN EFI_EXCEPTION_TYPE EFIExceptionType
)
{
{
UINTN i;
for (i=0; i < MaxEfiException() ; i++) {
if (gExceptionType[i].Exception == EFIExceptionType) {
return gExceptionType[i].SignalNo;
@@ -443,8 +443,8 @@ ConvertEFItoGDBtype (
/** "m addr,length"
Find the Length of the area to read and the start addres. Finally, pass them to
another function, TransferFromMemToOutBufAndSend, that will read from that memory space and
Find the Length of the area to read and the start addres. Finally, pass them to
another function, TransferFromMemToOutBufAndSend, that will read from that memory space and
send it as a packet.
**/
@@ -459,37 +459,37 @@ ReadFromMemory (
CHAR8 AddressBuffer[MAX_ADDR_SIZE]; // the buffer that will hold the address in hex chars
CHAR8 *AddrBufPtr; // pointer to the address buffer
CHAR8 *InBufPtr; /// pointer to the input buffer
AddrBufPtr = AddressBuffer;
InBufPtr = &PacketData[1];
while (*InBufPtr != ',') {
*AddrBufPtr++ = *InBufPtr++;
}
*AddrBufPtr = '\0';
InBufPtr++; // this skips ',' in the buffer
/* Error checking */
if (AsciiStrLen(AddressBuffer) >= MAX_ADDR_SIZE) {
SendError (GDB_EBADMEMADDRBUFSIZE);
SendError (GDB_EBADMEMADDRBUFSIZE);
return;
}
// 2 = 'm' + ','
if (AsciiStrLen(PacketData) - AsciiStrLen(AddressBuffer) - 2 >= MAX_LENGTH_SIZE) {
SendError (GDB_EBADMEMLENGTH);
SendError (GDB_EBADMEMLENGTH);
return;
}
Address = AsciiStrHexToUintn (AddressBuffer);
Length = AsciiStrHexToUintn (InBufPtr);
TransferFromMemToOutBufAndSend (Length, (unsigned char *)Address);
}
/** "M addr,length :XX..."
Find the Length of the area in bytes to write and the start addres. Finally, pass them to
Find the Length of the area in bytes to write and the start addres. Finally, pass them to
another function, TransferFromInBufToMem, that will write to that memory space the info in
the input buffer.
**/
@@ -507,48 +507,48 @@ WriteToMemory (
CHAR8 *AddrBufPtr; // pointer to the Address buffer
CHAR8 *LengthBufPtr; // pointer to the Length buffer
CHAR8 *InBufPtr; /// pointer to the input buffer
AddrBufPtr = AddressBuffer;
LengthBufPtr = LengthBuffer;
InBufPtr = &PacketData[1];
while (*InBufPtr != ',') {
*AddrBufPtr++ = *InBufPtr++;
}
*AddrBufPtr = '\0';
InBufPtr++; // this skips ',' in the buffer
while (*InBufPtr != ':') {
*LengthBufPtr++ = *InBufPtr++;
}
*LengthBufPtr = '\0';
InBufPtr++; // this skips ':' in the buffer
Address = AsciiStrHexToUintn (AddressBuffer);
Length = AsciiStrHexToUintn (LengthBuffer);
/* Error checking */
//Check if Address is not too long.
if (AsciiStrLen(AddressBuffer) >= MAX_ADDR_SIZE) {
SendError (GDB_EBADMEMADDRBUFSIZE);
SendError (GDB_EBADMEMADDRBUFSIZE);
return;
}
//Check if message length is not too long
if (AsciiStrLen(LengthBuffer) >= MAX_LENGTH_SIZE) {
SendError (GDB_EBADMEMLENGBUFSIZE);
SendError (GDB_EBADMEMLENGBUFSIZE);
return;
}
// Check if Message is not too long/short.
// 3 = 'M' + ',' + ':'
MessageLength = (AsciiStrLen(PacketData) - AsciiStrLen(AddressBuffer) - AsciiStrLen(LengthBuffer) - 3);
if (MessageLength != (2*Length)) {
//Message too long/short. New data is not the right size.
SendError (GDB_EBADMEMDATASIZE);
SendError (GDB_EBADMEMDATASIZE);
return;
}
TransferFromInBufToMem (Length, (unsigned char *)Address, InBufPtr);
@@ -623,7 +623,7 @@ ParseBreakpointPacket (
/**
Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints
@param SystemContext Register content at time of the exception
@param GdbExceptionType GDB exception type
**/
@@ -644,12 +644,12 @@ GdbSendTSignal (
//
// replace _, or previous value, with Exception type
//
*TSignalPtr++ = mHexToStr [GdbExceptionType >> 4];
*TSignalPtr++ = mHexToStr [GdbExceptionType >> 4];
*TSignalPtr++ = mHexToStr [GdbExceptionType & 0x0f];
ProcessorSendTSignal (SystemContext, GdbExceptionType, TSignalPtr, sizeof (TSignalBuffer) - 2);
SendPacket (TSignalBuffer);
SendPacket (TSignalBuffer);
}
VOID
@@ -666,7 +666,7 @@ GdbFWrite (
for( ; ; ) {
ReceivePacket (gInBuffer, MAX_BUF_SIZE);
switch (gInBuffer[0]) {
case 'm':
ReadFromMemory (gInBuffer);
@@ -697,20 +697,20 @@ GdbFPutString (
/**
Exception Hanldler for GDB. It will be called for all exceptions
registered via the gExceptionType[] array.
@param ExceptionType Exception that is being processed
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
GdbExceptionHandler (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
GdbExceptionHandler (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
UINT8 GdbExceptionType;
CHAR8 *Ptr;
if (ProcessorControlC (ExceptionType, SystemContext)) {
// We tried to process a control C handler and there is nothing to do
return;
@@ -718,37 +718,37 @@ GdbExceptionHandler (
GdbExceptionType = ConvertEFItoGDBtype (ExceptionType);
GdbSendTSignal (SystemContext, GdbExceptionType);
for( ; ; ) {
ReceivePacket (gInBuffer, MAX_BUF_SIZE);
switch (gInBuffer[0]) {
case '?':
GdbSendTSignal (SystemContext, GdbExceptionType);
break;
case 'c':
ContinueAtAddress (SystemContext, gInBuffer);
ContinueAtAddress (SystemContext, gInBuffer);
return;
case 'D':
// gdb wants to disconnect so return "OK" packet since.
// gdb wants to disconnect so return "OK" packet since.
SendSuccess ();
return;
case 'g':
ReadGeneralRegisters (SystemContext);
break;
case 'G':
WriteGeneralRegisters (SystemContext, gInBuffer);
break;
case 'H':
//Return "OK" packet since we don't have more than one thread.
//Return "OK" packet since we don't have more than one thread.
SendSuccess ();
break;
case 'm':
ReadFromMemory (gInBuffer);
break;
@@ -764,7 +764,7 @@ GdbExceptionHandler (
//
// Still debugging this code. Not used in Darwin
//
case 'q':
case 'q':
// General Query Packets
if (AsciiStrnCmp (gInBuffer, "qSupported", 10) == 0) {
// return what we currently support, we don't parse what gdb suports
@@ -774,7 +774,7 @@ GdbExceptionHandler (
// <20>qXfer:libraries:read::offset,length
// gInBuffer[22] is offset string, ++Ptr is length string<6E>
for (Ptr = &gInBuffer[22]; *Ptr != ','; Ptr++);
// Not sure if multi-radix support is required. Currently only support decimal
QxferLibrary (AsciiStrHexToUintn (&gInBuffer[22]), AsciiStrHexToUintn (++Ptr));
} else if (AsciiStrnCmp (gInBuffer, "qOffsets", 8) == 0) {
@@ -790,18 +790,18 @@ GdbExceptionHandler (
break;
case 's':
SingleStep (SystemContext, gInBuffer);
SingleStep (SystemContext, gInBuffer);
return;
case 'z':
RemoveBreakPoint (SystemContext, gInBuffer);
break;
case 'Z':
InsertBreakPoint (SystemContext, gInBuffer);
break;
default:
default:
//Send empty packet
SendNotSupported ();
break;

172
EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.h
View File

@@ -34,7 +34,7 @@
extern CONST CHAR8 mHexToStr[];
// maximum size of input and output buffers
// This value came from the show remote command of the gdb we tested against
// This value came from the show remote command of the gdb we tested against
#define MAX_BUF_SIZE 2000
// maximum size of address buffer
@@ -57,11 +57,11 @@ extern CONST CHAR8 mHexToStr[];
// GDB Signal definitions - generic names for interrupts
//
#define GDB_SIGINT 2 // Interrupt process via ctrl-c
#define GDB_SIGILL 4 // Illegal instruction
#define GDB_SIGILL 4 // Illegal instruction
#define GDB_SIGTRAP 5 // Trace Trap (Breakpoint and SingleStep)
#define GDB_SIGEMT 7 // Emulator Trap
#define GDB_SIGFPE 8 // Floating point exception
#define GDB_SIGSEGV 11 // Setgment violation, page fault
#define GDB_SIGSEGV 11 // Setgment violation, page fault
//
@@ -69,9 +69,9 @@ extern CONST CHAR8 mHexToStr[];
// Includes all general GDB Unix like error values
//
#define GDB_EBADMEMADDRBUFSIZE 11 // the buffer that stores memory Address to be read from/written to is not the right size
#define GDB_EBADMEMLENGBUFSIZE 12 // the buffer that stores Length is not the right size
#define GDB_EBADMEMLENGBUFSIZE 12 // the buffer that stores Length is not the right size
#define GDB_EBADMEMLENGTH 13 // Length, the given number of bytes to read or write, is not the right size
#define GDB_EBADMEMDATA 14 // one of the bytes or nibbles of the memory is leess than 0
#define GDB_EBADMEMDATA 14 // one of the bytes or nibbles of the memory is leess than 0
#define GDB_EBADMEMDATASIZE 15 // the memory data, 'XX..', is too short or too long
#define GDB_EBADBUFSIZE 21 // the buffer created is not the correct size
#define GDB_EINVALIDARG 31 // argument is invalid
@@ -91,7 +91,7 @@ extern CONST CHAR8 mHexToStr[];
//
//Define Register size for different architectures
//
#if defined (MDE_CPU_IA32)
#if defined (MDE_CPU_IA32)
#define REG_SIZE 32
#elif defined (MDE_CPU_X64)
#define REG_SIZE 64
@@ -119,7 +119,7 @@ typedef union {
UINT32 B1:1; // Breakpoint condition detected
UINT32 B2:1; // Breakpoint condition detected
UINT32 B3:1; // Breakpoint condition detected
UINT32 Reserved_1:9; // Reserved
UINT32 Reserved_1:9; // Reserved
UINT32 BD:1; // Debug register access detected
UINT32 BS:1; // Single step
UINT32 BT:1; // Task switch
@@ -186,8 +186,8 @@ extern BOOLEAN gProcessingFPacket;
/**
Return the number of entries in the gExceptionType[]
@retval UINTN, the number of entries in the gExceptionType[] array.
@retval UINTN, the number of entries in the gExceptionType[] array.
**/
UINTN
MaxEfiException (
@@ -196,9 +196,9 @@ MaxEfiException (
/**
Check to see if the ISA is supported.
Check to see if the ISA is supported.
ISA = Instruction Set Architecture
@retval TRUE if Isa is supported,
FALSE otherwise.
**/
@@ -210,7 +210,7 @@ CheckIsa (
/**
Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints
@param SystemContext Register content at time of the exception
@param GdbExceptionType GDB exception type
**/
@@ -224,29 +224,29 @@ GdbSendTSignal (
/**
Translates the EFI mapping to GDB mapping
@param EFIExceptionType EFI Exception that is being processed
@retval UINTN that corresponds to EFIExceptionType's GDB exception type number
**/
UINT8
ConvertEFItoGDBtype (
ConvertEFItoGDBtype (
IN EFI_EXCEPTION_TYPE EFIExceptionType
);
/**
Empties the given buffer
Empties the given buffer
@param *Buf pointer to the first element in buffer to be emptied
**/
VOID
EmptyBuffer (
EmptyBuffer (
IN CHAR8 *Buf
);
/**
Converts an 8-bit Hex Char into a INTN.
@param Char - the hex character to be converted into UINTN
@retval a INTN, from 0 to 15, that corressponds to Char
-1 if Char is not a hex character
@@ -261,7 +261,7 @@ HexCharToInt (
Send an error with the given error number after converting to hex.
The error number is put into the buffer in hex. '255' is the biggest errno we can send.
ex: 162 will be sent as A2.
@param errno the error number that will be sent
**/
VOID
@@ -288,8 +288,8 @@ SendNotSupported (
VOID
);
/** ‘p n’
Reads the n-th register's value into an output buffer and sends it as a packet
/** ‘p n’
Reads the n-th register's value into an output buffer and sends it as a packet
@param SystemContext Register content at time of the exception
@param InBuffer This is the input buffer received from gdb server
**/
@@ -300,12 +300,12 @@ ReadNthRegister (
);
/** ‘g’
Reads the general registers into an output buffer and sends it as a packet
/** ‘g’
Reads the general registers into an output buffer and sends it as a packet
@param SystemContext Register content at time of the exception
**/
VOID
ReadGeneralRegisters (
ReadGeneralRegisters (
IN EFI_SYSTEM_CONTEXT SystemContext
);
@@ -336,10 +336,10 @@ WriteGeneralRegisters (
/** ‘m addr,length ’
Find the Length of the area to read and the start addres. Finally, pass them to
another function, TransferFromMemToOutBufAndSend, that will read from that memory space and
Find the Length of the area to read and the start addres. Finally, pass them to
another function, TransferFromMemToOutBufAndSend, that will read from that memory space and
send it as a packet.
@param *PacketData Pointer to Payload data for the packet
**/
VOID
@@ -349,10 +349,10 @@ ReadFromMemory (
/** ‘M addr,length :XX...’
Find the Length of the area in bytes to write and the start addres. Finally, pass them to
Find the Length of the area in bytes to write and the start addres. Finally, pass them to
another function, TransferFromInBufToMem, that will write to that memory space the info in
the input buffer.
@param PacketData Pointer to Payload data for the packet
**/
VOID
@@ -361,11 +361,11 @@ WriteToMemory (
);
/** ‘c [addr ]’
Continue. addr is Address to resume. If addr is omitted, resume at current
/** ‘c [addr ]’
Continue. addr is Address to resume. If addr is omitted, resume at current
Address.
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
@param *PacketData Pointer to PacketData
**/
@@ -377,9 +377,9 @@ ContinueAtAddress (
/** ‘s [addr ]’
Single step. addr is the Address at which to resume. If addr is omitted, resume
Single step. addr is the Address at which to resume. If addr is omitted, resume
at same Address.
@param SystemContext Register content at time of the exception
@param PacketData Pointer to Payload data for the packet
**/
@@ -389,27 +389,27 @@ SingleStep (
IN CHAR8 *PacketData
);
/**
/**
Insert Single Step in the SystemContext
@param SystemContext Register content at time of the exception
**/
VOID
AddSingleStep (
IN EFI_SYSTEM_CONTEXT SystemContext
);
/**
/**
Remove Single Step in the SystemContext
@param SystemContext Register content at time of the exception
**/
VOID
RemoveSingleStep (
IN EFI_SYSTEM_CONTEXT SystemContext
);
/**
‘Z1, [addr], [length]’
‘Z2, [addr], [length]’
@@ -453,36 +453,36 @@ RemoveBreakPoint(
/**
Exception Hanldler for GDB. It will be called for all exceptions
registered via the gExceptionType[] array.
@param ExceptionType Exception that is being processed
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
GdbExceptionHandler (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
GdbExceptionHandler (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
);
/**
Periodic callback for GDB. This function is used to catch a ctrl-c or other
Periodic callback for GDB. This function is used to catch a ctrl-c or other
break in type command from GDB.
@param SystemContext Register content at time of the call
**/
VOID
EFIAPI
GdbPeriodicCallBack (
IN OUT EFI_SYSTEM_CONTEXT SystemContext
GdbPeriodicCallBack (
IN OUT EFI_SYSTEM_CONTEXT SystemContext
);
/**
Make two serail consoles: 1) StdIn and StdOut via GDB. 2) StdErr via GDB.
These console show up on the remote system running GDB
**/
@@ -495,15 +495,15 @@ GdbInitializeSerialConsole (
/**
Send a GDB Remote Serial Protocol Packet
$PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
$PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
the packet teminating character '#' and the two digit checksum.
If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up
If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up
in an infinit loop. This is so if you unplug the debugger code just keeps running
@param PacketData Payload data for the packet
@param PacketData Payload data for the packet
@retval Number of bytes of packet data sent.
**/
@@ -511,21 +511,21 @@ UINTN
SendPacket (
IN CHAR8 *PacketData
);
/**
Receive a GDB Remote Serial Protocol Packet
$PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
$PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',
the packet teminating character '#' and the two digit checksum.
If host re-starts sending a packet without ending the previous packet, only the last valid packet is proccessed.
(In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.)
If an ack '+' is not sent resend the packet
@param PacketData Payload data for the packet
@param PacketData Payload data for the packet
@retval Number of bytes of packet data received.
**/
@@ -534,15 +534,15 @@ ReceivePacket (
OUT CHAR8 *PacketData,
IN UINTN PacketDataSize
);
/**
Read data from a FileDescriptor. On success number of bytes read is returned. Zero indicates
Read data from a FileDescriptor. On success number of bytes read is returned. Zero indicates
the end of a file. On error -1 is returned. If count is zero, GdbRead returns zero.
@param FileDescriptor Device to talk to.
@param Buffer Buffer to hold Count bytes that were read
@param Count Number of bytes to transfer.
@param Count Number of bytes to transfer.
@retval -1 Error
@retval {other} Number of bytes read.
@@ -554,15 +554,15 @@ GdbRead (
OUT VOID *Buffer,
IN UINTN Count
);
/**
Write data to a FileDescriptor. On success number of bytes written is returned. Zero indicates
nothing was written. On error -1 is returned.
Write data to a FileDescriptor. On success number of bytes written is returned. Zero indicates
nothing was written. On error -1 is returned.
@param FileDescriptor Device to talk to.
@param Buffer Buffer to hold Count bytes that are to be written
@param Count Number of bytes to transfer.
@param Count Number of bytes to transfer.
@retval -1 Error
@retval {other} Number of bytes written.
@@ -575,13 +575,13 @@ GdbWrite (
IN UINTN Count
);
UINTN *
UINTN *
FindPointerToRegister (
IN EFI_SYSTEM_CONTEXT SystemContext,
IN UINTN RegNumber
IN UINTN RegNumber
);
CHAR8 *
CHAR8 *
BasicReadRegister (
IN EFI_SYSTEM_CONTEXT SystemContext,
IN UINTN RegNumber,
@@ -608,7 +608,7 @@ BasicWriteRegister (
IN CHAR8 *InBufPtr
);
VOID
VOID
PrintReg (
EFI_SYSTEM_CONTEXT SystemContext
);
@@ -624,7 +624,7 @@ ParseBreakpointPacket (
UINTN
GetBreakpointDataAddress (
IN EFI_SYSTEM_CONTEXT SystemContext,
IN UINTN BreakpointNumber
IN UINTN BreakpointNumber
);
UINTN
@@ -635,7 +635,7 @@ GetBreakpointDetected (
BREAK_TYPE
GetBreakpointType (
IN EFI_SYSTEM_CONTEXT SystemContext,
IN UINTN BreakpointNumber
IN UINTN BreakpointNumber
);
UINTN
@@ -680,7 +680,7 @@ InitializeProcessor (
/**
Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints
@param SystemContext Register content at time of the exception
@param GdbExceptionType GDB exception type
**/
@@ -694,17 +694,17 @@ ProcessorSendTSignal (
/**
Check to see if this exception is related to ctrl-c handling.
@param ExceptionType Exception that is being processed
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
@return TRUE This was a ctrl-c check that did not find a ctrl-c
@return FALSE This was not a ctrl-c check or some one hit ctrl-c
**/
BOOLEAN
ProcessorControlC (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
ProcessorControlC (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
);

8
EmbeddedPkg/Library/GdbDebugAgent/GdbDebugAgent.inf
View File

@@ -51,10 +51,10 @@
ArmPkg/ArmPkg.dec
[LibraryClasses]
BaseLib
DebugLib
BaseMemoryLib
PcdLib
BaseLib
DebugLib
BaseMemoryLib
PcdLib
GdbSerialLib
CacheMaintenanceLib
DebugAgentTimerLib

158
EmbeddedPkg/Library/GdbDebugAgent/Ia32/Processor.c
View File

@@ -2,7 +2,7 @@
Processor specific parts of the GDB stub
Copyright (c) 2008 - 2009, Apple Inc. 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
@@ -20,7 +20,7 @@
// {EFI mapping, GDB mapping}
//
EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
{ EXCEPT_IA32_DIVIDE_ERROR, GDB_SIGFPE },
{ EXCEPT_IA32_DIVIDE_ERROR, GDB_SIGFPE },
{ EXCEPT_IA32_DEBUG, GDB_SIGTRAP },
{ EXCEPT_IA32_NMI, GDB_SIGEMT },
{ EXCEPT_IA32_BREAKPOINT, GDB_SIGTRAP },
@@ -62,7 +62,7 @@ UINTN gRegisterOffsets[] = {
//Debug only..
VOID
VOID
PrintReg (
IN EFI_SYSTEM_CONTEXT SystemContext
)
@@ -80,7 +80,7 @@ PrintReg (
}
//Debug only..
VOID
VOID
PrintDRreg (
IN EFI_SYSTEM_CONTEXT SystemContext
)
@@ -96,8 +96,8 @@ PrintDRreg (
/**
Return the number of entries in the gExceptionType[]
@retval UINTN, the number of entries in the gExceptionType[] array.
@retval UINTN, the number of entries in the gExceptionType[] array.
**/
UINTN
MaxEfiException (
@@ -109,9 +109,9 @@ MaxEfiException (
/**
Check to see if the ISA is supported.
Check to see if the ISA is supported.
ISA = Instruction Set Architecture
@retval TRUE if Isa is supported,
FALSE otherwise.
**/
@@ -128,14 +128,14 @@ CheckIsa (
This takes in the register number and the System Context, and returns a pointer to the RegNumber-th register in gdb ordering
It is, by default, set to find the register pointer of the IA32 member
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
@param RegNumber The register to which we want to find a pointer
@retval the pointer to the RegNumber-th pointer
**/
UINTN *
FindPointerToRegister(
IN EFI_SYSTEM_CONTEXT SystemContext,
IN UINTN RegNumber
IN UINTN RegNumber
)
{
UINT8 *TempPtr;
@@ -160,7 +160,7 @@ BasicReadRegister (
)
{
UINTN RegSize;
RegSize = 0;
while (RegSize < REG_SIZE) {
*OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> (RegSize+4)) & 0xf)];
@@ -171,8 +171,8 @@ BasicReadRegister (
}
/** ‘p n’
Reads the n-th register's value into an output buffer and sends it as a packet
/** ‘p n’
Reads the n-th register's value into an output buffer and sends it as a packet
@param SystemContext Register content at time of the exception
@param InBuffer Pointer to the input buffer received from gdb server
@@ -187,7 +187,7 @@ ReadNthRegister (
UINTN RegNumber;
CHAR8 OutBuffer[9]; // 1 reg=8 hex chars, and the end '\0' (escape seq)
CHAR8 *OutBufPtr; // pointer to the output buffer
RegNumber = AsciiStrHexToUintn (&InBuffer[1]);
if ((RegNumber < 0) || (RegNumber >= sizeof (gRegisterOffsets)/sizeof (UINTN))) {
@@ -203,14 +203,14 @@ ReadNthRegister (
}
/** ‘g’
Reads the general registers into an output buffer and sends it as a packet
/** ‘g’
Reads the general registers into an output buffer and sends it as a packet
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
ReadGeneralRegisters (
ReadGeneralRegisters (
IN EFI_SYSTEM_CONTEXT SystemContext
)
{
@@ -219,7 +219,7 @@ ReadGeneralRegisters (
CHAR8 *OutBufPtr; // pointer to the output buffer
OutBufPtr = OutBuffer;
for(i = 0 ; i < sizeof (gRegisterOffsets)/sizeof (UINTN) ; i++) { // there are only 16 registers to read
for(i = 0 ; i < sizeof (gRegisterOffsets)/sizeof (UINTN) ; i++) { // there are only 16 registers to read
OutBufPtr = BasicReadRegister(SystemContext, i, OutBufPtr);
}
@@ -246,26 +246,26 @@ BasicWriteRegister (
UINTN RegSize;
UINTN TempValue; // the value transferred from a hex char
UINT32 NewValue; // the new value of the RegNumber-th Register
NewValue = 0;
RegSize = 0;
while (RegSize < REG_SIZE) {
TempValue = HexCharToInt(*InBufPtr++);
if (TempValue < 0) {
SendError (GDB_EBADMEMDATA);
SendError (GDB_EBADMEMDATA);
return NULL;
}
NewValue += (TempValue << (RegSize+4));
TempValue = HexCharToInt(*InBufPtr++);
if (TempValue < 0) {
SendError (GDB_EBADMEMDATA);
SendError (GDB_EBADMEMDATA);
return NULL;
}
NewValue += (TempValue << RegSize);
NewValue += (TempValue << RegSize);
RegSize = RegSize + 8;
}
*(FindPointerToRegister(SystemContext, RegNumber)) = NewValue;
@@ -290,19 +290,19 @@ WriteNthRegister (
CHAR8 RegNumBuffer[MAX_REG_NUM_BUF_SIZE]; // put the 'n..' part of the message into this array
CHAR8 *RegNumBufPtr;
CHAR8 *InBufPtr; // pointer to the input buffer
// find the register number to write
InBufPtr = &InBuffer[1];
RegNumBufPtr = RegNumBuffer;
while (*InBufPtr != '=') {
*RegNumBufPtr++ = *InBufPtr++;
}
}
*RegNumBufPtr = '\0';
RegNumber = AsciiStrHexToUintn (RegNumBuffer);
RegNumber = AsciiStrHexToUintn (RegNumBuffer);
// check if this is a valid Register Number
if ((RegNumber < 0) || (RegNumber >= sizeof (gRegisterOffsets)/sizeof (UINTN))) {
SendError (GDB_EINVALIDREGNUM);
SendError (GDB_EINVALIDREGNUM);
return;
}
InBufPtr++; // skips the '=' character
@@ -327,16 +327,16 @@ WriteGeneralRegisters (
UINTN i;
CHAR8 *InBufPtr; /// pointer to the input buffer
// check to see if the buffer is the right size which is
// 1 (for 'G') + 16 (for 16 registers) * 8 ( for 8 hex chars each) = 129
// check to see if the buffer is the right size which is
// 1 (for 'G') + 16 (for 16 registers) * 8 ( for 8 hex chars each) = 129
if (AsciiStrLen(InBuffer) != 129) { // 16 regs, 8 hex chars each, and the end '\0' (escape seq)
//Bad message. Message is not the right length
SendError (GDB_EBADBUFSIZE);
//Bad message. Message is not the right length
SendError (GDB_EBADBUFSIZE);
return;
}
InBufPtr = &InBuffer[1];
// Read the new values for the registers from the input buffer to an array, NewValueArray.
// The values in the array are in the gdb ordering
for(i=0; i < sizeof (gRegisterOffsets)/sizeof (UINTN); i++) { // there are only 16 registers to write
@@ -346,11 +346,11 @@ WriteGeneralRegisters (
SendSuccess();
}
/** ‘c [addr ]’
Continue. addr is Address to resume. If addr is omitted, resume at current
/** ‘c [addr ]’
Continue. addr is Address to resume. If addr is omitted, resume at current
Address.
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
@@ -361,15 +361,15 @@ ContinueAtAddress (
{
if (PacketData[1] != '\0') {
SystemContext.SystemContextIa32->Eip = AsciiStrHexToUintn (&PacketData[1]);
}
}
}
/** ‘s [addr ]’
Single step. addr is the Address at which to resume. If addr is omitted, resume
Single step. addr is the Address at which to resume. If addr is omitted, resume
at same Address.
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
@@ -421,9 +421,9 @@ GetBreakpointDataAddress (
@param SystemContext Register content at time of the exception
@retval {1-4} Currently detected breakpoint value
@retval {1-4} Currently detected breakpoint value
@retval 0 No breakpoint detected.
**/
UINTN
GetBreakpointDetected (
@@ -444,7 +444,7 @@ GetBreakpointDetected (
} else if (Dr6.Bits.B3 == 1) {
BreakpointNumber = 4;
} else {
BreakpointNumber = 0; //No breakpoint detected
BreakpointNumber = 0; //No breakpoint detected
}
return BreakpointNumber;
@@ -454,13 +454,13 @@ GetBreakpointDetected (
/**
Returns Breakpoint type (InstructionExecution, DataWrite, DataRead or DataReadWrite)
based on the Breakpoint number
@param SystemContext Register content at time of the exception
@param BreakpointNumber Breakpoint number
@retval BREAK_TYPE Breakpoint type value read from register DR7 RWn field
For unknown value, it returns NotSupported.
**/
BREAK_TYPE
GetBreakpointType (
@@ -474,22 +474,22 @@ GetBreakpointType (
Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
if (BreakpointNumber == 1) {
Type = (BREAK_TYPE) Dr7.Bits.RW0;
Type = (BREAK_TYPE) Dr7.Bits.RW0;
} else if (BreakpointNumber == 2) {
Type = (BREAK_TYPE) Dr7.Bits.RW1;
Type = (BREAK_TYPE) Dr7.Bits.RW1;
} else if (BreakpointNumber == 3) {
Type = (BREAK_TYPE) Dr7.Bits.RW2;
Type = (BREAK_TYPE) Dr7.Bits.RW2;
} else if (BreakpointNumber == 4) {
Type = (BREAK_TYPE) Dr7.Bits.RW3;
Type = (BREAK_TYPE) Dr7.Bits.RW3;
}
return Type;
}
/**
/**
Parses Length and returns the length which DR7 LENn field accepts.
For example: If we receive 1-Byte length then we should return 0.
For example: If we receive 1-Byte length then we should return 0.
Zero gets written to DR7 LENn field.
@param Length Breakpoint length in Bytes (1 byte, 2 byte, 4 byte)
@@ -502,7 +502,7 @@ ConvertLengthData (
IN UINTN Length
)
{
if (Length == 1) { //1-Byte length
if (Length == 1) { //1-Byte length
return 0;
} else if (Length == 2) { //2-Byte length
return 1;
@@ -515,8 +515,8 @@ ConvertLengthData (
/**
Finds the next free debug register. If all the registers are occupied then
EFI_OUT_OF_RESOURCES is returned.
Finds the next free debug register. If all the registers are occupied then
EFI_OUT_OF_RESOURCES is returned.
@param SystemContext Register content at time of the exception
@param Register Register value (0 - 3 for the first free debug register)
@@ -553,11 +553,11 @@ FindNextFreeDebugRegister (
/**
Enables the debug register. Writes Address value to appropriate DR0-3 register.
Sets LENn, Gn, RWn bits in DR7 register.
@param SystemContext Register content at time of the exception
@param Register Register value (0 - 3)
@param Register Register value (0 - 3)
@param Address Breakpoint address value
@param Type Breakpoint type (Instruction, Data write, Data read
@param Type Breakpoint type (Instruction, Data write, Data read
or write etc.)
@retval EFI_STATUS Appropriate status value.
@@ -577,15 +577,15 @@ EnableDebugRegister (
//Convert length data
Length = ConvertLengthData (Length);
//For Instruction execution, length should be 0
//For Instruction execution, length should be 0
//(Ref. Intel reference manual 18.2.4)
if ((Type == 0) && (Length != 0)) {
return EFI_INVALID_PARAMETER;
}
//Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
//software breakpoint. We should send empty packet in both these cases.
if ((Type == (BREAK_TYPE)DataRead) ||
if ((Type == (BREAK_TYPE)DataRead) ||
(Type == (BREAK_TYPE)SoftwareBreakpoint)) {
return EFI_UNSUPPORTED;
}
@@ -617,7 +617,7 @@ EnableDebugRegister (
return EFI_INVALID_PARAMETER;
}
//Update Dr7 with appropriate Gn, RWn and LENn bits
//Update Dr7 with appropriate Gn, RWn and LENn bits
SystemContext.SystemContextIa32->Dr7 = Dr7.UintN;
return EFI_SUCCESS;
@@ -633,7 +633,7 @@ EnableDebugRegister (
@param SystemContext Register content at time of the exception
@param Address Breakpoint address value
@param Length Breakpoint length value
@param Type Breakpoint type (Instruction, Data write,
@param Type Breakpoint type (Instruction, Data write,
Data read or write etc.)
@param Register Register value to be returned
@@ -653,7 +653,7 @@ FindMatchingDebugRegister (
//Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
//software breakpoint. We should send empty packet in both these cases.
if ((Type == (BREAK_TYPE)DataRead) ||
if ((Type == (BREAK_TYPE)DataRead) ||
(Type == (BREAK_TYPE)SoftwareBreakpoint)) {
return EFI_UNSUPPORTED;
}
@@ -663,24 +663,24 @@ FindMatchingDebugRegister (
Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
if ((Dr7.Bits.G0 == 1) &&
if ((Dr7.Bits.G0 == 1) &&
(Dr7.Bits.LEN0 == Length) &&
(Dr7.Bits.RW0 == Type) &&
(Dr7.Bits.RW0 == Type) &&
(Address == SystemContext.SystemContextIa32->Dr0)) {
*Register = 0;
} else if ((Dr7.Bits.G1 == 1) &&
} else if ((Dr7.Bits.G1 == 1) &&
(Dr7.Bits.LEN1 == Length) &&
(Dr7.Bits.RW1 == Type) &&
(Dr7.Bits.RW1 == Type) &&
(Address == SystemContext.SystemContextIa32->Dr1)) {
*Register = 1;
} else if ((Dr7.Bits.G2 == 1) &&
} else if ((Dr7.Bits.G2 == 1) &&
(Dr7.Bits.LEN2 == Length) &&
(Dr7.Bits.RW2 == Type) &&
(Dr7.Bits.RW2 == Type) &&
(Address == SystemContext.SystemContextIa32->Dr2)) {
*Register = 2;
} else if ((Dr7.Bits.G3 == 1) &&
} else if ((Dr7.Bits.G3 == 1) &&
(Dr7.Bits.LEN3 == Length) &&
(Dr7.Bits.RW3 == Type) &&
(Dr7.Bits.RW3 == Type) &&
(Address == SystemContext.SystemContextIa32->Dr3)) {
*Register = 3;
} else {
@@ -704,12 +704,12 @@ FindMatchingDebugRegister (
EFI_STATUS
DisableDebugRegister (
IN EFI_SYSTEM_CONTEXT SystemContext,
IN UINTN Register
IN UINTN Register
)
{
IA32_DR7 Dr7;
UINTN Address = 0;
//Read DR7 register so appropriate Gn, RWn and LENn bits can be turned off.
Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
@@ -863,15 +863,15 @@ RemoveBreakPoint (
}
switch (Type) {
case 0: //Software breakpoint
BreakType = SoftwareBreakpoint;
break;
case 1: //Hardware breakpoint
BreakType = InstructionExecution;
break;
case 2: //Write watchpoint
BreakType = DataWrite;
break;

178
EmbeddedPkg/Library/GdbDebugAgent/X64/Processor.c
View File

@@ -2,7 +2,7 @@
Processor specific parts of the GDB stub
Copyright (c) 2008 - 2009, Apple Inc. 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
@@ -19,7 +19,7 @@
// Array of exception types that need to be hooked by the debugger
//
EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
{ EXCEPT_X64_DIVIDE_ERROR, GDB_SIGFPE },
{ EXCEPT_X64_DIVIDE_ERROR, GDB_SIGFPE },
{ EXCEPT_X64_DEBUG, GDB_SIGTRAP },
{ EXCEPT_X64_NMI, GDB_SIGEMT },
{ EXCEPT_X64_BREAKPOINT, GDB_SIGTRAP },
@@ -37,7 +37,7 @@ EFI_EXCEPTION_TYPE_ENTRY gExceptionType[] = {
// The offsets of registers SystemContextX64.
// The fields in the array are in the gdb ordering.
// The fields in the array are in the gdb ordering.
// HAVE TO DOUBLE-CHECK THE ORDER of the 24 regs
//
UINTN gRegisterOffsets[] = {
@@ -70,8 +70,8 @@ UINTN gRegisterOffsets[] = {
/**
Return the number of entries in the gExceptionType[]
@retval UINTN, the number of entries in the gExceptionType[] array.
@retval UINTN, the number of entries in the gExceptionType[] array.
**/
UINTN
MaxEfiException (
@@ -84,8 +84,8 @@ MaxEfiException (
/**
Return the number of entries in the gRegisters[]
@retval UINTN, the number of entries (registers) in the gRegisters[] array.
@retval UINTN, the number of entries (registers) in the gRegisters[] array.
**/
UINTN
MaxRegisterCount (
@@ -95,9 +95,9 @@ MaxRegisterCount (
return sizeof (gRegisterOffsets)/sizeof (UINTN);
}
/**
Check to see if the ISA is supported.
Check to see if the ISA is supported.
ISA = Instruction Set Architecture
@retval TRUE if Isa is supported
@@ -114,14 +114,14 @@ CheckIsa (
/**
This takes in the register number and the System Context, and returns a pointer to the RegNumber-th register in gdb ordering
It is, by default, set to find the register pointer of the X64 member
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
@param RegNumber The register to which we want to find a pointer
@retval the pointer to the RegNumber-th pointer
**/
UINTN *
FindPointerToRegister(
IN EFI_SYSTEM_CONTEXT SystemContext,
IN UINTN RegNumber
IN UINTN RegNumber
)
{
UINT8 *TempPtr;
@@ -145,7 +145,7 @@ BasicReadRegister (
)
{
UINTN RegSize;
RegSize = 0;
while (RegSize < 64) {
*OutBufPtr++ = mHexToStr[((*FindPointerToRegister(SystemContext, RegNumber) >> (RegSize+4)) & 0xf)];
@@ -156,8 +156,8 @@ BasicReadRegister (
}
/** ‘p n’
Reads the n-th register's value into an output buffer and sends it as a packet
/** ‘p n’
Reads the n-th register's value into an output buffer and sends it as a packet
@param SystemContext Register content at time of the exception
@param InBuffer Pointer to the input buffer received from gdb server
**/
@@ -170,42 +170,42 @@ ReadNthRegister (
UINTN RegNumber;
CHAR8 OutBuffer[17]; // 1 reg=16 hex chars, and the end '\0' (escape seq)
CHAR8 *OutBufPtr; // pointer to the output buffer
RegNumber = AsciiStrHexToUintn (&InBuffer[1]);
if ((RegNumber < 0) || (RegNumber >= MaxRegisterCount())) {
SendError (GDB_EINVALIDREGNUM);
SendError (GDB_EINVALIDREGNUM);
return;
}
OutBufPtr = OutBuffer;
OutBufPtr = BasicReadRegister(SystemContext, RegNumber, OutBufPtr);
*OutBufPtr = '\0'; // the end of the buffer
SendPacket (OutBuffer);
}
/** ‘g’
Reads the general registers into an output buffer and sends it as a packet
/** ‘g’
Reads the general registers into an output buffer and sends it as a packet
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
ReadGeneralRegisters (
ReadGeneralRegisters (
IN EFI_SYSTEM_CONTEXT SystemContext
)
{
UINTN i;
CHAR8 OutBuffer[385]; // 24 regs, 16 hex chars each, and the end '\0' (escape seq)
CHAR8 *OutBufPtr; // pointer to the output buffer
OutBufPtr = OutBuffer;
for(i = 0 ; i < MaxRegisterCount() ; i++) { // there are only 24 registers to read
for(i = 0 ; i < MaxRegisterCount() ; i++) { // there are only 24 registers to read
OutBufPtr = BasicReadRegister(SystemContext, i, OutBufPtr);
}
*OutBufPtr = '\0'; // the end of the buffer
SendPacket (OutBuffer);
}
@@ -229,26 +229,26 @@ BasicWriteRegister (
UINTN RegSize;
UINTN TempValue; // the value transferred from a hex char
UINT64 NewValue; // the new value of the RegNumber-th Register
NewValue = 0;
RegSize = 0;
while (RegSize < 64) {
TempValue = HexCharToInt(*InBufPtr++);
if (TempValue < 0) {
SendError (GDB_EBADMEMDATA);
SendError (GDB_EBADMEMDATA);
return NULL;
}
NewValue += (TempValue << (RegSize+4));
TempValue = HexCharToInt(*InBufPtr++);
if (TempValue < 0) {
SendError (GDB_EBADMEMDATA);
SendError (GDB_EBADMEMDATA);
return NULL;
}
NewValue += (TempValue << RegSize);
NewValue += (TempValue << RegSize);
RegSize = RegSize + 8;
}
*(FindPointerToRegister(SystemContext, RegNumber)) = NewValue;
@@ -273,19 +273,19 @@ WriteNthRegister (
CHAR8 RegNumBuffer[MAX_REG_NUM_BUF_SIZE]; // put the 'n..' part of the message into this array
CHAR8 *RegNumBufPtr;
CHAR8 *InBufPtr; // pointer to the input buffer
// find the register number to write
InBufPtr = &InBuffer[1];
RegNumBufPtr = RegNumBuffer;
while (*InBufPtr != '=') {
*RegNumBufPtr++ = *InBufPtr++;
}
}
*RegNumBufPtr = '\0';
RegNumber = AsciiStrHexToUintn (RegNumBuffer);
RegNumber = AsciiStrHexToUintn (RegNumBuffer);
// check if this is a valid Register Number
if ((RegNumber < 0) || (RegNumber >= MaxRegisterCount())) {
SendError (GDB_EINVALIDREGNUM);
SendError (GDB_EINVALIDREGNUM);
return;
}
InBufPtr++; // skips the '=' character
@@ -309,30 +309,30 @@ WriteGeneralRegisters (
{
UINTN i;
CHAR8 *InBufPtr; /// pointer to the input buffer
// check to see if the buffer is the right size which is
// 1 (for 'G') + 16 (for 16 registers) * 8 ( for 8 hex chars each) = 385
// check to see if the buffer is the right size which is
// 1 (for 'G') + 16 (for 16 registers) * 8 ( for 8 hex chars each) = 385
if (AsciiStrLen(InBuffer) != 385) { // 24 regs, 16 hex chars each, and the end '\0' (escape seq)
//Bad message. Message is not the right length
SendError (GDB_EBADBUFSIZE);
//Bad message. Message is not the right length
SendError (GDB_EBADBUFSIZE);
return;
}
InBufPtr = &InBuffer[1];
// Read the new values for the registers from the input buffer to an array, NewValueArray.
// The values in the array are in the gdb ordering
for(i=0; i < MaxRegisterCount(); i++) { // there are only 16 registers to write
InBufPtr = BasicWriteRegister(SystemContext, i, InBufPtr);
}
SendSuccess();
}
/**
/**
Insert Single Step in the SystemContext
@param SystemContext Register content at time of the exception
**/
VOID
@@ -343,11 +343,11 @@ AddSingleStep (
SystemContext.SystemContextX64->Rflags |= TF_BIT; //Setting the TF bit.
}
/**
/**
Remove Single Step in the SystemContext
@param SystemContext Register content at time of the exception
**/
VOID
@@ -360,11 +360,11 @@ RemoveSingleStep (
/** ‘c [addr ]’
Continue. addr is Address to resume. If addr is omitted, resume at current
/** ‘c [addr ]’
Continue. addr is Address to resume. If addr is omitted, resume at current
Address.
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
@@ -375,15 +375,15 @@ ContinueAtAddress (
{
if (PacketData[1] != '\0') {
SystemContext.SystemContextX64->Rip = AsciiStrHexToUintn(&PacketData[1]);
}
}
}
/** ‘s [addr ]’
Single step. addr is the Address at which to resume. If addr is omitted, resume
Single step. addr is the Address at which to resume. If addr is omitted, resume
at same Address.
@param SystemContext Register content at time of the exception
@param SystemContext Register content at time of the exception
**/
VOID
EFIAPI
@@ -395,19 +395,19 @@ SingleStep (
if (PacketData[1] != '\0') {
SystemContext.SystemContextX64->Rip = AsciiStrHexToUintn (&PacketData[1]);
}
AddSingleStep (SystemContext);
}
/**
Returns breakpoint data address from DR0-DR3 based on the input breakpoint
Returns breakpoint data address from DR0-DR3 based on the input breakpoint
number
@param SystemContext Register content at time of the exception
@param BreakpointNumber Breakpoint number
@retval Address Data address from DR0-DR3 based on the
@retval Address Data address from DR0-DR3 based on the
breakpoint number.
**/
@@ -435,7 +435,7 @@ GetBreakpointDataAddress (
}
/**
Returns currently detected breakpoint value based on the register
Returns currently detected breakpoint value based on the register
DR6 B0-B3 field.
If no breakpoint is detected then it returns 0.
@@ -471,13 +471,13 @@ GetBreakpointDetected (
}
/**
Returns Breakpoint type (InstructionExecution, DataWrite, DataRead
Returns Breakpoint type (InstructionExecution, DataWrite, DataRead
or DataReadWrite) based on the Breakpoint number
@param SystemContext Register content at time of the exception
@param BreakpointNumber Breakpoint number
@retval BREAK_TYPE Breakpoint type value read from register DR7 RWn
@retval BREAK_TYPE Breakpoint type value read from register DR7 RWn
field. For unknown value, it returns NotSupported.
**/
@@ -506,9 +506,9 @@ GetBreakpointType (
}
/**
/**
Parses Length and returns the length which DR7 LENn field accepts.
For example: If we receive 1-Byte length then we should return 0.
For example: If we receive 1-Byte length then we should return 0.
Zero gets written to DR7 LENn field.
@param Length Breakpoint length in Bytes (1 byte, 2 byte, 4 byte)
@@ -521,7 +521,7 @@ ConvertLengthData (
IN UINTN Length
)
{
if (Length == 1) { //1-Byte length
if (Length == 1) { //1-Byte length
return 0;
} else if (Length == 2) { //2-Byte length
return 1;
@@ -576,7 +576,7 @@ FindNextFreeDebugRegister (
@param SystemContext Register content at time of the exception
@param Register Register value (0 - 3)
@param Address Breakpoint address value
@param Type Breakpoint type (Instruction, Data write,
@param Type Breakpoint type (Instruction, Data write,
Data read or write etc.)
@retval EFI_STATUS Appropriate status value.
@@ -596,7 +596,7 @@ EnableDebugRegister (
//Convert length data
Length = ConvertLengthData (Length);
//For Instruction execution, length should be 0
//For Instruction execution, length should be 0
//(Ref. Intel reference manual 18.2.4)
if ((Type == 0) && (Length != 0)) {
return EFI_INVALID_PARAMETER;
@@ -604,7 +604,7 @@ EnableDebugRegister (
//Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
//software breakpoint. We should send empty packet in both these cases.
if ((Type == (BREAK_TYPE)DataRead) ||
if ((Type == (BREAK_TYPE)DataRead) ||
(Type == (BREAK_TYPE)SoftwareBreakpoint)) {
return EFI_UNSUPPORTED;
}
@@ -643,14 +643,14 @@ EnableDebugRegister (
}
/**
Returns register number 0 - 3 for the maching debug register.
This function compares incoming Address, Type, Length and
/**
Returns register number 0 - 3 for the maching debug register.
This function compares incoming Address, Type, Length and
if there is a match then it returns the appropriate register number.
In case of mismatch, function returns EFI_NOT_FOUND message.
@param SystemContext Register content at time of the exception
@param Address Breakpoint address value
@param Address Breakpoint address value
@param Length Breakpoint length value
@param Type Breakpoint type (Instruction, Data write, Data read
or write etc.)
@@ -672,7 +672,7 @@ FindMatchingDebugRegister (
//Hardware doesn't support ReadWatch (z3 packet) type. GDB can handle
//software breakpoint. We should send empty packet in both these cases.
if ((Type == (BREAK_TYPE)DataRead) ||
if ((Type == (BREAK_TYPE)DataRead) ||
(Type == (BREAK_TYPE)SoftwareBreakpoint)) {
return EFI_UNSUPPORTED;
}
@@ -682,24 +682,24 @@ FindMatchingDebugRegister (
Dr7.UintN = SystemContext.SystemContextIa32->Dr7;
if ((Dr7.Bits.G0 == 1) &&
if ((Dr7.Bits.G0 == 1) &&
(Dr7.Bits.LEN0 == Length) &&
(Dr7.Bits.RW0 == Type) &&
(Dr7.Bits.RW0 == Type) &&
(Address == SystemContext.SystemContextIa32->Dr0)) {
*Register = 0;
} else if ((Dr7.Bits.G1 == 1) &&
} else if ((Dr7.Bits.G1 == 1) &&
(Dr7.Bits.LEN1 == Length) &&
(Dr7.Bits.RW1 == Type) &&
(Dr7.Bits.RW1 == Type) &&
(Address == SystemContext.SystemContextIa32->Dr1)) {
*Register = 1;
} else if ((Dr7.Bits.G2 == 1) &&
} else if ((Dr7.Bits.G2 == 1) &&
(Dr7.Bits.LEN2 == Length) &&
(Dr7.Bits.RW2 == Type) &&
(Dr7.Bits.RW2 == Type) &&
(Address == SystemContext.SystemContextIa32->Dr2)) {
*Register = 2;
} else if ((Dr7.Bits.G3 == 1) &&
} else if ((Dr7.Bits.G3 == 1) &&
(Dr7.Bits.LEN3 == Length) &&
(Dr7.Bits.RW3 == Type) &&
(Dr7.Bits.RW3 == Type) &&
(Address == SystemContext.SystemContextIa32->Dr3)) {
*Register = 3;
} else {
@@ -884,15 +884,15 @@ RemoveBreakPoint (
}
switch (Type) {
case 0: //Software breakpoint
BreakType = SoftwareBreakpoint;
break;
case 1: //Hardware breakpoint
BreakType = InstructionExecution;
break;
case 2: //Write watchpoint
BreakType = DataWrite;
break;
@@ -954,8 +954,8 @@ ValidateAddress (
BOOLEAN
ValidateException (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
return TRUE;