diff options
Diffstat (limited to 'EdkModulePkg/Universal/Ebc/Dxe/Ipf/EbcLowLevel.s')
| -rw-r--r-- | EdkModulePkg/Universal/Ebc/Dxe/Ipf/EbcLowLevel.s | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/EdkModulePkg/Universal/Ebc/Dxe/Ipf/EbcLowLevel.s b/EdkModulePkg/Universal/Ebc/Dxe/Ipf/EbcLowLevel.s deleted file mode 100644 index e329b68e66..0000000000 --- a/EdkModulePkg/Universal/Ebc/Dxe/Ipf/EbcLowLevel.s +++ /dev/null @@ -1,197 +0,0 @@ -//++
-// Copyright (c) 2006, Intel Corporation
-// All rights reserved. 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
-// http://opensource.org/licenses/bsd-license.php
-//
-// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-//
-// Module Name:
-//
-// EbcLowLevel.s
-//
-// Abstract:
-//
-// Contains low level routines for the Virtual Machine implementation
-// on an Itanium-based platform.
-//
-//
-//--
-
-.file "EbcLowLevel.s"
-
-#define PROCEDURE_ENTRY(name) .##text; \
- .##type name, @function; \
- .##proc name; \
-name::
-
-#define PROCEDURE_EXIT(name) .##endp name
-
-// Note: use of NESTED_SETUP requires number of locals (l) >= 3
-
-#define NESTED_SETUP(i,l,o,r) \
- alloc loc1=ar##.##pfs,i,l,o,r ;\
- mov loc0=b0
-
-#define NESTED_RETURN \
- mov b0=loc0 ;\
- mov ar##.##pfs=loc1 ;;\
- br##.##ret##.##dpnt b0;;
-
-.type CopyMem, @function;
-
-//-----------------------------------------------------------------------------
-//++
-// EbcAsmLLCALLEX
-//
-// Implements the low level EBC CALLEX instruction. Sets up the
-// stack pointer, does the spill of function arguments, and
-// calls the native function. On return it restores the original
-// stack pointer and returns to the caller.
-//
-// Arguments :
-//
-// On Entry :
-// in0 = Address of native code to call
-// in1 = New stack pointer
-//
-// Return Value:
-//
-// As per static calling conventions.
-//
-//--
-//---------------------------------------------------------------------------
-;// void EbcAsmLLCALLEX (UINTN FunctionAddr, UINTN EbcStackPointer)
-PROCEDURE_ENTRY(EbcAsmLLCALLEX)
- NESTED_SETUP (2,6,8,0)
-
- // NESTED_SETUP uses loc0 and loc1 for context save
-
- //
- // Save a copy of the EBC VM stack pointer
- //
- mov r8 = in1;;
-
- //
- // Copy stack arguments from EBC stack into registers.
- // Assume worst case and copy 8.
- //
- ld8 out0 = [r8], 8;;
- ld8 out1 = [r8], 8;;
- ld8 out2 = [r8], 8;;
- ld8 out3 = [r8], 8;;
- ld8 out4 = [r8], 8;;
- ld8 out5 = [r8], 8;;
- ld8 out6 = [r8], 8;;
- ld8 out7 = [r8], 8;;
-
- //
- // Save the original stack pointer
- //
- mov loc2 = r12;
-
- //
- // Save the gp
- //
- or loc3 = r1, r0
-
- //
- // Set the new aligned stack pointer. Reserve space for the required
- // 16-bytes of scratch area as well.
- //
- add r12 = 48, in1
-
- //
- // Now call the function. Load up the function address from the descriptor
- // pointed to by in0. Then get the gp from the descriptor at the following
- // address in the descriptor.
- //
- ld8 r31 = [in0], 8;;
- ld8 r30 = [in0];;
- mov b1 = r31
- mov r1 = r30
- (p0) br.call.dptk.many b0 = b1;;
-
- //
- // Restore the original stack pointer and gp
- //
- mov r12 = loc2
- or r1 = loc3, r0
-
- //
- // Now return
- //
- NESTED_RETURN
-
-PROCEDURE_EXIT(EbcAsmLLCALLEX)
-
-PROCEDURE_ENTRY(EbcLLCALLEXNative)
- NESTED_SETUP (3,6,3,0)
-
- mov loc2 = in2;;
- mov loc3 = in1;;
- sub loc2 = loc2, loc3
- mov loc4 = r12;;
- or loc5 = r1, r0
-
- sub r12 = r12, loc2
- mov out2 = loc2;;
-
- and r12 = -0x10, r12
- mov out1 = in1;;
- mov out0 = r12;;
- adds r12 = -0x8, r12
- (p0) br.call.dptk.many b0 = CopyMem;;
- adds r12 = 0x8, r12
-
- mov out0 = in0;;
- mov out1 = r12;;
- (p0) br.call.dptk.many b0 = EbcAsmLLCALLEX;;
- mov r12 = loc4;;
- or r1 = loc5, r0
-
- NESTED_RETURN
-PROCEDURE_EXIT(EbcLLCALLEXNative)
-
-
-//
-// UINTN EbcLLGetEbcEntryPoint(VOID)
-//
-// Description:
-// Simply return, so that the caller retrieves the return register
-// contents (R8). That's where the thunk-to-ebc code stuffed the
-// EBC entry point.
-//
-PROCEDURE_ENTRY(EbcLLGetEbcEntryPoint)
- br.ret.sptk b0 ;;
-PROCEDURE_EXIT(EbcLLGetEbcEntryPoint)
-
-//
-// INT64 EbcLLGetReturnValue(VOID)
-//
-// Description:
-// This function is called to get the value returned by native code
-// to EBC. It simply returns because the return value should still
-// be in the register, so the caller just gets the unmodified value.
-//
-PROCEDURE_ENTRY(EbcLLGetReturnValue)
- br.ret.sptk b0 ;;
-PROCEDURE_EXIT(EbcLLGetReturnValue)
-
-//
-// UINTN EbcLLGetStackPointer(VOID)
-//
-PROCEDURE_ENTRY(EbcLLGetStackPointer)
- mov r8 = r12 ;;
- br.ret.sptk b0 ;;
- br.sptk.few b6
-PROCEDURE_EXIT(EbcLLGetStackPointer)
-
-
-
-
-
-
-
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