sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Code scrub for EBC module.

Browse Source 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5568 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
2008-07-26 07:35:34 +00:00
parent 42eedea958
commit 34e4e297bf
6 changed files with 158 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files

182
MdeModulePkg/Universal/EbcDxe/EbcExecute.c
View File

@@ -49,13 +49,13 @@ UINT64
b14:12 - number of bits in this index assigned to natural units (=a)
ba:11 - constant units = ConstUnits
b0:a - natural units = NaturalUnits
Given this info, the offset can be computed by:
offset = sign_bit * (ConstUnits + NaturalUnits * sizeof(UINTN))
Max offset is achieved with index = 0x7FFF giving an offset of
0x27B (32-bit machine) or 0x477 (64-bit machine).
Min offset is achieved with index =
Min offset is achieved with index =
@param VmPtr A pointer to VM context.
@param CodeOffset Offset from IP of the location of the 16-bit index
@@ -179,7 +179,7 @@ VmReadMemN (
/**
Writes 8-bit data to memory address.
This routine is called by the EBC data
movement instructions that write to memory. Since these writes
may be to the stack, which looks like (high address on top) this,
@@ -189,14 +189,14 @@ VmReadMemN (
[EBC stack]
we need to detect all attempts to write to the EBC entry point argument
stack area and adjust the address (which will initially point into the
stack area and adjust the address (which will initially point into the
VM stack) to point into the EBC entry point arguments.
@param VmPtr A pointer to a VM context.
@param Addr Adddress to write to.
@param Data Value to write to Addr.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval Other Some error occurs when writing data to the address.
**/
@@ -209,7 +209,7 @@ VmWriteMem8 (
/**
Writes 16-bit data to memory address.
This routine is called by the EBC data
movement instructions that write to memory. Since these writes
may be to the stack, which looks like (high address on top) this,
@@ -219,14 +219,14 @@ VmWriteMem8 (
[EBC stack]
we need to detect all attempts to write to the EBC entry point argument
stack area and adjust the address (which will initially point into the
stack area and adjust the address (which will initially point into the
VM stack) to point into the EBC entry point arguments.
@param VmPtr A pointer to a VM context.
@param Addr Adddress to write to.
@param Data Value to write to Addr.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval Other Some error occurs when writing data to the address.
**/
@@ -239,7 +239,7 @@ VmWriteMem16 (
/**
Writes 32-bit data to memory address.
This routine is called by the EBC data
movement instructions that write to memory. Since these writes
may be to the stack, which looks like (high address on top) this,
@@ -249,14 +249,14 @@ VmWriteMem16 (
[EBC stack]
we need to detect all attempts to write to the EBC entry point argument
stack area and adjust the address (which will initially point into the
stack area and adjust the address (which will initially point into the
VM stack) to point into the EBC entry point arguments.
@param VmPtr A pointer to a VM context.
@param Addr Adddress to write to.
@param Data Value to write to Addr.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval Other Some error occurs when writing data to the address.
**/
@@ -440,7 +440,7 @@ ConvertStackAddr (
@param VmPtr A pointer to VM context.
@param IsSignedOp Indicates whether the operand is signed or not.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -472,7 +472,7 @@ ExecuteBREAK (
Instruction syntax:
JMP64{cs|cc} Immed64
JMP32{cs|cc} {@}R1 {Immed32|Index32}
Encoding:
b0.7 - immediate data present
b0.6 - 1 = 64 bit immediate data
@@ -557,7 +557,7 @@ ExecuteRET (
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -574,7 +574,7 @@ ExecuteCMP (
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -587,15 +587,15 @@ ExecuteCMPI (
Execute the MOVxx instructions.
Instruction format:
MOV[b|w|d|q|n]{w|d} {@}R1 {Index16|32}, {@}R2 {Index16|32}
MOVqq {@}R1 {Index64}, {@}R2 {Index64}
Copies contents of [R2] -> [R1], zero extending where required.
First character indicates the size of the move.
Second character indicates the size of the index(s).
Invalid to have R1 direct with index.
@param VmPtr A pointer to a VM context.
@@ -613,20 +613,20 @@ ExecuteMOVxx (
Execute the EBC MOVI.
Instruction syntax:
MOVI[b|w|d|q][w|d|q] {@}R1 {Index16}, ImmData16|32|64
First variable character specifies the move size
Second variable character specifies size of the immediate data
Sign-extend the immediate data to the size of the operation, and zero-extend
if storing to a register.
Operand1 direct with index/immed is invalid.
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -640,12 +640,12 @@ ExecuteMOVI (
index value into a register or memory location.
Instruction syntax:
MOVIn[w|d|q] {@}R1 {Index16}, Index16|32|64
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -659,12 +659,12 @@ ExecuteMOVIn (
Dest <- Ip + ImmData
Instruction syntax:
MOVREL[w|d|q] {@}R1 {Index16}, ImmData16|32|64
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -750,7 +750,7 @@ ExecutePOP (
@param VmPtr A pointer to VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -772,7 +772,7 @@ ExecuteSignedDataManip (
@param VmPtr A pointer to VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -789,7 +789,7 @@ ExecuteUnsignedDataManip (
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -806,7 +806,7 @@ ExecuteLOADSP (
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -822,15 +822,15 @@ ExecuteSTORESP (
is a register.
Instruction syntax:
MOVsnd {@}R1 {Indx32}, {@}R2 {Index32|Immed32}
0:7 1=>operand1 index present
0:6 1=>operand2 index present
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -846,15 +846,15 @@ ExecuteMOVsnd (
is a register.
Instruction syntax:
MOVsnw {@}R1 {Index16}, {@}R2 {Index16|Immed16}
0:7 1=>operand1 index present
0:6 1=>operand2 index present
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -1250,7 +1250,7 @@ ExecuteEXTNDD (
// Once we retrieve the operands for the data manipulation instructions,
// call these functions to perform the operation.
//
STATIC CONST DATA_MANIP_EXEC_FUNCTION mDataManipDispatchTable[] = {
CONST DATA_MANIP_EXEC_FUNCTION mDataManipDispatchTable[] = {
ExecuteNOT,
ExecuteNEG,
ExecuteADD,
@@ -1272,7 +1272,7 @@ STATIC CONST DATA_MANIP_EXEC_FUNCTION mDataManipDispatchTable[] = {
ExecuteEXTNDD,
};
STATIC CONST VM_TABLE_ENTRY mVmOpcodeTable[] = {
CONST VM_TABLE_ENTRY mVmOpcodeTable[] = {
{ ExecuteBREAK }, // opcode 0x00
{ ExecuteJMP }, // opcode 0x01
{ ExecuteJMP8 }, // opcode 0x02
@@ -1336,7 +1336,7 @@ STATIC CONST VM_TABLE_ENTRY mVmOpcodeTable[] = {
//
// Length of JMP instructions, depending on upper two bits of opcode.
//
STATIC CONST UINT8 mJMPLen[] = { 2, 2, 6, 10 };
CONST UINT8 mJMPLen[] = { 2, 2, 6, 10 };
//
// Simple Debugger Protocol GUID
@@ -1536,15 +1536,15 @@ Done:
Execute the MOVxx instructions.
Instruction format:
MOV[b|w|d|q|n]{w|d} {@}R1 {Index16|32}, {@}R2 {Index16|32}
MOVqq {@}R1 {Index64}, {@}R2 {Index64}
Copies contents of [R2] -> [R1], zero extending where required.
First character indicates the size of the move.
Second character indicates the size of the index(s).
Invalid to have R1 direct with index.
@param VmPtr A pointer to a VM context.
@@ -1928,7 +1928,7 @@ ExecuteBREAK (
Instruction syntax:
JMP64{cs|cc} Immed64
JMP32{cs|cc} {@}R1 {Immed32|Index32}
Encoding:
b0.7 - immediate data present
b0.6 - 1 = 64 bit immediate data
@@ -2152,20 +2152,20 @@ ExecuteJMP8 (
Execute the EBC MOVI.
Instruction syntax:
MOVI[b|w|d|q][w|d|q] {@}R1 {Index16}, ImmData16|32|64
First variable character specifies the move size
Second variable character specifies size of the immediate data
Sign-extend the immediate data to the size of the operation, and zero-extend
if storing to a register.
Operand1 direct with index/immed is invalid.
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -2278,12 +2278,12 @@ ExecuteMOVI (
index value into a register or memory location.
Instruction syntax:
MOVIn[w|d|q] {@}R1 {Index16}, Index16|32|64
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -2380,12 +2380,12 @@ ExecuteMOVIn (
Dest <- Ip + ImmData
Instruction syntax:
MOVREL[w|d|q] {@}R1 {Index16}, ImmData16|32|64
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -2483,15 +2483,15 @@ ExecuteMOVREL (
is a register.
Instruction syntax:
MOVsnw {@}R1 {Index16}, {@}R2 {Index16|Immed16}
0:7 1=>operand1 index present
0:6 1=>operand2 index present
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -2576,15 +2576,15 @@ ExecuteMOVsnw (
is a register.
Instruction syntax:
MOVsnd {@}R1 {Indx32}, {@}R2 {Index32|Immed32}
0:7 1=>operand1 index present
0:6 1=>operand2 index present
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -3128,7 +3128,7 @@ ExecuteRET (
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -3289,7 +3289,7 @@ ExecuteCMP (
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -4057,7 +4057,7 @@ ExecuteEXTNDD (
@param VmPtr A pointer to VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -4087,7 +4087,7 @@ ExecuteSignedDataManip (
@param VmPtr A pointer to VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -4118,7 +4118,7 @@ ExecuteUnsignedDataManip (
@param VmPtr A pointer to VM context.
@param IsSignedOp Indicates whether the operand is signed or not.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -4267,7 +4267,7 @@ ExecuteDataManip (
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -4321,7 +4321,7 @@ ExecuteLOADSP (
@param VmPtr A pointer to a VM context.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_UNSUPPORTED The opcodes/operands is not supported.
@retval EFI_SUCCESS The instruction is executed successfully.
**/
@@ -4381,13 +4381,13 @@ ExecuteSTORESP (
b14:12 - number of bits in this index assigned to natural units (=a)
ba:11 - constant units = ConstUnits
b0:a - natural units = NaturalUnits
Given this info, the offset can be computed by:
offset = sign_bit * (ConstUnits + NaturalUnits * sizeof(UINTN))
Max offset is achieved with index = 0x7FFF giving an offset of
0x27B (32-bit machine) or 0x477 (64-bit machine).
Min offset is achieved with index =
Min offset is achieved with index =
@param VmPtr A pointer to VM context.
@param CodeOffset Offset from IP of the location of the 16-bit index
@@ -4585,7 +4585,7 @@ VmReadIndex64 (
/**
Writes 8-bit data to memory address.
This routine is called by the EBC data
movement instructions that write to memory. Since these writes
may be to the stack, which looks like (high address on top) this,
@@ -4595,14 +4595,14 @@ VmReadIndex64 (
[EBC stack]
we need to detect all attempts to write to the EBC entry point argument
stack area and adjust the address (which will initially point into the
stack area and adjust the address (which will initially point into the
VM stack) to point into the EBC entry point arguments.
@param VmPtr A pointer to a VM context.
@param Addr Adddress to write to.
@param Data Value to write to Addr.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval Other Some error occurs when writing data to the address.
**/
@@ -4623,7 +4623,7 @@ VmWriteMem8 (
/**
Writes 16-bit data to memory address.
This routine is called by the EBC data
movement instructions that write to memory. Since these writes
may be to the stack, which looks like (high address on top) this,
@@ -4633,14 +4633,14 @@ VmWriteMem8 (
[EBC stack]
we need to detect all attempts to write to the EBC entry point argument
stack area and adjust the address (which will initially point into the
stack area and adjust the address (which will initially point into the
VM stack) to point into the EBC entry point arguments.
@param VmPtr A pointer to a VM context.
@param Addr Adddress to write to.
@param Data Value to write to Addr.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval Other Some error occurs when writing data to the address.
**/
@@ -4686,7 +4686,7 @@ VmWriteMem16 (
/**
Writes 32-bit data to memory address.
This routine is called by the EBC data
movement instructions that write to memory. Since these writes
may be to the stack, which looks like (high address on top) this,
@@ -4696,14 +4696,14 @@ VmWriteMem16 (
[EBC stack]
we need to detect all attempts to write to the EBC entry point argument
stack area and adjust the address (which will initially point into the
stack area and adjust the address (which will initially point into the
VM stack) to point into the EBC entry point arguments.
@param VmPtr A pointer to a VM context.
@param Addr Adddress to write to.
@param Data Value to write to Addr.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval Other Some error occurs when writing data to the address.
**/
@@ -4749,7 +4749,7 @@ VmWriteMem32 (
/**
Writes 64-bit data to memory address.
This routine is called by the EBC data
movement instructions that write to memory. Since these writes
may be to the stack, which looks like (high address on top) this,
@@ -4759,14 +4759,14 @@ VmWriteMem32 (
[EBC stack]
we need to detect all attempts to write to the EBC entry point argument
stack area and adjust the address (which will initially point into the
stack area and adjust the address (which will initially point into the
VM stack) to point into the EBC entry point arguments.
@param VmPtr A pointer to a VM context.
@param Addr Adddress to write to.
@param Data Value to write to Addr.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval Other Some error occurs when writing data to the address.
**/
@@ -4814,7 +4814,7 @@ VmWriteMem64 (
/**
Writes UINTN data to memory address.
This routine is called by the EBC data
movement instructions that write to memory. Since these writes
may be to the stack, which looks like (high address on top) this,
@@ -4824,14 +4824,14 @@ VmWriteMem64 (
[EBC stack]
we need to detect all attempts to write to the EBC entry point argument
stack area and adjust the address (which will initially point into the
stack area and adjust the address (which will initially point into the
VM stack) to point into the EBC entry point arguments.
@param VmPtr A pointer to a VM context.
@param Addr Adddress to write to.
@param Data Value to write to Addr.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval EFI_SUCCESS The instruction is executed successfully.
@retval Other Some error occurs when writing data to the address.
**/
@@ -4862,7 +4862,7 @@ VmWriteMemN (
MemoryFence ();
Status = VmWriteMem32 (VmPtr, Addr + Index * sizeof (UINT32), (UINT32) Data);
MemoryFence ();
Data = (UINTN)RShiftU64 ((UINT64)Data, 32);
Data = (UINTN) RShiftU64 ((UINT64)Data, 32);
}
}
@@ -4969,8 +4969,8 @@ VmReadImmed32 (
//
// Return unaligned data
//
Data = (UINT32) VmReadCode16 (VmPtr, Offset);
Data |= (UINT32) (VmReadCode16 (VmPtr, Offset + 2) << 16);
Data = (UINT32) VmReadCode16 (VmPtr, Offset);
Data |= (UINT32)(VmReadCode16 (VmPtr, Offset + 2) << 16);
return Data;
}
@@ -5011,7 +5011,7 @@ VmReadImmed64 (
Ptr = (UINT8 *) &Data64;
Data32 = VmReadCode32 (VmPtr, Offset);
*(UINT32 *) Ptr = Data32;
Ptr += sizeof (Data32);
Ptr += sizeof (Data32);
Data32 = VmReadCode32 (VmPtr, Offset + sizeof (UINT32));
*(UINT32 *) Ptr = Data32;
return Data64;
@@ -5126,7 +5126,7 @@ VmReadCode64 (
Ptr = (UINT8 *) &Data64;
Data32 = VmReadCode32 (VmPtr, Offset);
*(UINT32 *) Ptr = Data32;
Ptr += sizeof (Data32);
Ptr += sizeof (Data32);
Data32 = VmReadCode32 (VmPtr, Offset + sizeof (UINT32));
*(UINT32 *) Ptr = Data32;
return Data64;
@@ -5340,7 +5340,7 @@ VmReadMemN (
/**
Returns the version of the EBC virtual machine.
@return The 64-bit version of EBC virtual machine.
**/