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1. Advance IP in case of Break(3) in breakpoint exception

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2. Add stack management algorithm to avoid pool allocation during EBC instruction interpretation. 
3. Add multi EBC image support.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2519 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
2007-03-30 08:44:55 +00:00
parent 784220c3f7
commit 73ebf379a4
13 changed files with 420 additions and 121 deletions
Download Patch File Download Diff File Expand all files Collapse all files

106
EdkModulePkg/Universal/Ebc/Dxe/Ipf/EbcSupport.c
View File

@@ -61,6 +61,8 @@ EbcInterpret (
//
VM_CONTEXT VmContext;
UINTN Addr;
EFI_STATUS Status;
UINTN StackIndex;
VA_LIST List;
UINT64 Arg2;
UINT64 Arg3;
@@ -69,7 +71,14 @@ EbcInterpret (
UINT64 Arg6;
UINT64 Arg7;
UINT64 Arg8;
UINTN Arg9Addr;
UINT64 Arg9;
UINT64 Arg10;
UINT64 Arg11;
UINT64 Arg12;
UINT64 Arg13;
UINT64 Arg14;
UINT64 Arg15;
UINT64 Arg16;
//
// Get the EBC entry point from the processor register. Make sure you don't
// call any functions before this or you could mess up the register the
@@ -87,7 +96,14 @@ EbcInterpret (
Arg6 = VA_ARG (List, UINT64);
Arg7 = VA_ARG (List, UINT64);
Arg8 = VA_ARG (List, UINT64);
Arg9Addr = (UINTN) List;
Arg9 = VA_ARG (List, UINT64);
Arg10 = VA_ARG (List, UINT64);
Arg11 = VA_ARG (List, UINT64);
Arg12 = VA_ARG (List, UINT64);
Arg13 = VA_ARG (List, UINT64);
Arg14 = VA_ARG (List, UINT64);
Arg15 = VA_ARG (List, UINT64);
Arg16 = VA_ARG (List, UINT64);
//
// Now clear out our context
//
@@ -100,7 +116,6 @@ EbcInterpret (
// Initialize the stack pointer for the EBC. Get the current system stack
// pointer and adjust it down by the max needed for the interpreter.
//
Addr = (UINTN) Arg9Addr;
//
// NOTE: Eventually we should have the interpreter allocate memory
// for stack space which it will use during its execution. This
@@ -122,13 +137,21 @@ EbcInterpret (
// actually trying to access args9 and greater. Therefore we need to
// adjust memory accesses in this region to point above the stack gap.
//
VmContext.HighStackBottom = (UINTN) Addr;
//
// Now adjust the EBC stack pointer down to leave a gap for interpreter
// execution. Then stuff a magic value there.
//
VmContext.R[0] = (UINT64) Addr;
VmContext.R[0] -= VM_STACK_SIZE;
Status = GetEBCStack((EFI_HANDLE)(UINTN)-1, &VmContext.StackPool, &StackIndex);
if (EFI_ERROR(Status)) {
return Status;
}
VmContext.StackTop = (UINT8*)VmContext.StackPool + (STACK_REMAIN_SIZE);
VmContext.R[0] = (UINT64) ((UINT8*)VmContext.StackPool + STACK_POOL_SIZE);
VmContext.HighStackBottom = (UINTN) VmContext.R[0];
VmContext.R[0] -= sizeof (UINTN);
PushU64 (&VmContext, (UINT64) VM_STACK_KEY_VALUE);
VmContext.StackMagicPtr = (UINTN *) VmContext.R[0];
VmContext.LowStackTop = (UINTN) VmContext.R[0];
@@ -136,6 +159,14 @@ EbcInterpret (
// Push the EBC arguments on the stack. Does not matter that they may not
// all be valid.
//
PushU64 (&VmContext, Arg16);
PushU64 (&VmContext, Arg15);
PushU64 (&VmContext, Arg14);
PushU64 (&VmContext, Arg13);
PushU64 (&VmContext, Arg12);
PushU64 (&VmContext, Arg11);
PushU64 (&VmContext, Arg10);
PushU64 (&VmContext, Arg9);
PushU64 (&VmContext, Arg8);
PushU64 (&VmContext, Arg7);
PushU64 (&VmContext, Arg6);
@@ -159,6 +190,7 @@ EbcInterpret (
//
// Return the value in R[7] unless there was an error
//
ReturnEBCStack(StackIndex);
return (UINT64) VmContext.R[7];
}
@@ -194,6 +226,8 @@ Returns:
//
VM_CONTEXT VmContext;
UINTN Addr;
EFI_STATUS Status;
UINTN StackIndex;
//
// Get the EBC entry point from the processor register. Make sure you don't
@@ -222,14 +256,21 @@ Returns:
// Get the stack pointer. This is the bottom of the upper stack.
//
Addr = EbcLLGetStackPointer ();
VmContext.HighStackBottom = (UINTN) Addr;
VmContext.R[0] = (INT64) Addr;
Status = GetEBCStack(ImageHandle, &VmContext.StackPool, &StackIndex);
if (EFI_ERROR(Status)) {
return Status;
}
VmContext.StackTop = (UINT8*)VmContext.StackPool + (STACK_REMAIN_SIZE);
VmContext.R[0] = (UINT64) ((UINT8*)VmContext.StackPool + STACK_POOL_SIZE);
VmContext.HighStackBottom = (UINTN) VmContext.R[0];
VmContext.R[0] -= sizeof (UINTN);
//
// Allocate stack space for the interpreter. Then put a magic value
// at the bottom so we can detect stack corruption.
//
VmContext.R[0] -= VM_STACK_SIZE;
PushU64 (&VmContext, (UINT64) VM_STACK_KEY_VALUE);
VmContext.StackMagicPtr = (UINTN *) (UINTN) VmContext.R[0];
@@ -275,6 +316,7 @@ Returns:
//
// Return the value in R[7] unless there was an error
//
ReturnEBCStack(StackIndex);
return (UINT64) VmContext.R[7];
}
@@ -825,49 +867,3 @@ Action:
VmPtr->Ip += Size;
}
}
VOID
EbcLLCALLEXNative (
IN UINTN CallAddr,
IN UINTN EbcSp,
IN VOID *FramePtr
)
/*++
Routine Description:
Implements the EBC CALLEX instruction to call an external function, which
seems to be native code.
We'll copy the entire EBC stack frame down below itself in memory and use
that copy for passing parameters.
Arguments:
CallAddr - address (function pointer) of function to call
EbcSp - current EBC stack pointer
FramePtr - current EBC frame pointer.
Returns:
NA
--*/
{
UINTN FrameSize;
VOID *Destination;
VOID *Source;
//
// The stack for an EBC function looks like this:
// FramePtr (8)
// RetAddr (8)
// Locals (n)
// Stack for passing args (m)
//
// Pad the frame size with 64 bytes because the low-level code we call
// will move the stack pointer up assuming worst-case 8 args in registers.
//
FrameSize = (UINTN) FramePtr - (UINTN) EbcSp + 64;
Source = (VOID *) EbcSp;
Destination = (VOID *) ((UINT8 *) EbcSp - FrameSize - CPU_STACK_ALIGNMENT);
Destination = (VOID *) ((UINTN) ((UINTN) Destination + CPU_STACK_ALIGNMENT - 1) &~((UINTN) CPU_STACK_ALIGNMENT - 1));
CopyMem (Destination, Source, FrameSize);
EbcAsmLLCALLEX ((UINTN) CallAddr, (UINTN) Destination);
}