diff options
Diffstat (limited to 'EDK/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm')
| -rw-r--r-- | EDK/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm b/EDK/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm new file mode 100644 index 0000000..ebd8b03 --- /dev/null +++ b/EDK/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm @@ -0,0 +1,186 @@ +;------------------------------------------------------------------------------ +; +; Copyright (c) 2005 - 2007, 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: +; ProcessorAsms.Asm +; +; Abstract: +; This is separated from processor.c to allow this functions to be built with /O1 +; +; +;------------------------------------------------------------------------------ + +text SEGMENT + + +; +; Routine Description: +; This allows the caller to switch the stack and goes to the new entry point +; +; Arguments: +; EntryPoint - Pointer to the location to enter // rcx +; Parameter - Parameter to pass in // rdx +; NewStack - New Location of the stack // r8 +; NewBsp - New BSP // r9 - not used +; +; Returns: +; Nothing. Goes to the Entry Point passing in the new parameters +; +SwitchStacks PROC PUBLIC + + ; Adjust stack for + ; 1) leave 4 registers space + ; 2) let it 16 bytes aligned after call + sub r8, 20h + and r8w, 0fff0h ; do not assume 16 bytes aligned + + mov rsp, r8 ; rsp = NewStack + mov r10, rcx ; save EntryPoint + mov rcx, rdx ; Arg1 = Parameter + call r10 ; r10 = copy of EntryPoint + ; + ; no ret as we have a new stack and we jumped to the new location + ; + ret + +SwitchStacks ENDP + + +EFI_SUCCESS equ 0 +EFI_WARN_RETURN_FROM_LONG_JUMP equ 5 + +; +; Generated by h2inc run manually +; +_EFI_JUMP_BUFFER STRUCT 2t +_rbx QWORD ? +_rsp QWORD ? +_rbp QWORD ? +_rdi QWORD ? +_rsi QWORD ? +_r10 QWORD ? +_r11 QWORD ? +_r12 QWORD ? +_r13 QWORD ? +_r14 QWORD ? +_r15 QWORD ? +_rip QWORD ? +_MxCsr DWORD ? +_XmmBuffer DB 160 DUP (?) +_EFI_JUMP_BUFFER ENDS + +EFI_JUMP_BUFFER TYPEDEF _EFI_JUMP_BUFFER + + +; +;Routine Description: +; +; This routine implements the x64 variant of the SetJump call. Its +; responsibility is to store system state information for a possible +; subsequent LongJump. +; +;Arguments: +; +; Pointer to CPU context save buffer. +; +;Returns: +; +; EFI_SUCCESS +; +; EFI_STATUS +; EFIAPI +; TransferControlLongJump ( +; IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This, +; IN EFI_JUMP_BUFFER *Jump +; ); +; +; rcx - *This +; rdx - JumpBuffer +; +PUBLIC TransferControlSetJump +TransferControlSetJump PROC + mov (EFI_JUMP_BUFFER PTR [rdx])._rbx, rbx + mov (EFI_JUMP_BUFFER PTR [rdx])._rsp, rsp + mov (EFI_JUMP_BUFFER PTR [rdx])._rbp, rbp + mov (EFI_JUMP_BUFFER PTR [rdx])._rdi, rdi + mov (EFI_JUMP_BUFFER PTR [rdx])._rsi, rsi + mov (EFI_JUMP_BUFFER PTR [rdx])._r10, r10 + mov (EFI_JUMP_BUFFER PTR [rdx])._r11, r11 + mov (EFI_JUMP_BUFFER PTR [rdx])._r12, r12 + mov (EFI_JUMP_BUFFER PTR [rdx])._r13, r13 + mov (EFI_JUMP_BUFFER PTR [rdx])._r14, r14 + mov (EFI_JUMP_BUFFER PTR [rdx])._r15, r15 + ; save non-volatile fp registers + stmxcsr (EFI_JUMP_BUFFER PTR [rdx])._MxCsr + lea rax, (EFI_JUMP_BUFFER PTR [rdx])._XmmBuffer + movdqu [rax], xmm6 + movdqu [rax + 10h], xmm7 + movdqu [rax + 20h], xmm8 + movdqu [rax + 30h], xmm9 + movdqu [rax + 40h], xmm10 + movdqu [rax + 50h], xmm11 + movdqu [rax + 60h], xmm12 + movdqu [rax + 70h], xmm13 + movdqu [rax + 80h], xmm14 + movdqu [rax + 90h], xmm15 + mov rax, QWORD PTR [rsp+0] + mov (EFI_JUMP_BUFFER PTR [rdx])._rip, rax + mov rax, EFI_SUCCESS + ret + +TransferControlSetJump ENDP + +; +; EFI_STATUS +; EFIAPI +; TransferControlLongJump ( +; IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This, // rcx +; IN EFI_JUMP_BUFFER *Jump // rdx +; ); +; +; +PUBLIC TransferControlLongJump +TransferControlLongJump PROC + ; load non-volatile fp registers + ldmxcsr (EFI_JUMP_BUFFER PTR [rdx])._MxCsr + lea rax, (EFI_JUMP_BUFFER PTR [rdx])._XmmBuffer + movdqu xmm6, [rax] + movdqu xmm7, [rax + 10h] + movdqu xmm8, [rax + 20h] + movdqu xmm9, [rax + 30h] + movdqu xmm10, [rax + 40h] + movdqu xmm11, [rax + 50h] + movdqu xmm12, [rax + 60h] + movdqu xmm13, [rax + 70h] + movdqu xmm14, [rax + 80h] + movdqu xmm15, [rax + 90h] + ; set return from SetJump to EFI_WARN_RETURN_FROM_LONG_JUMP + mov rax, EFI_WARN_RETURN_FROM_LONG_JUMP + mov rbx, (EFI_JUMP_BUFFER PTR [rdx])._rbx + mov rsp, (EFI_JUMP_BUFFER PTR [rdx])._rsp + mov rbp, (EFI_JUMP_BUFFER PTR [rdx])._rbp + mov rdi, (EFI_JUMP_BUFFER PTR [rdx])._rdi + mov rsi, (EFI_JUMP_BUFFER PTR [rdx])._rsi + mov r10, (EFI_JUMP_BUFFER PTR [rdx])._r10 + mov r11, (EFI_JUMP_BUFFER PTR [rdx])._r11 + mov r12, (EFI_JUMP_BUFFER PTR [rdx])._r12 + mov r13, (EFI_JUMP_BUFFER PTR [rdx])._r13 + mov r14, (EFI_JUMP_BUFFER PTR [rdx])._r14 + mov r15, (EFI_JUMP_BUFFER PTR [rdx])._r15 + add rsp, 8 ;pop the eip + jmp QWORD PTR (EFI_JUMP_BUFFER PTR [rdx])._rip + ; set return from SetJump to EFI_WARN_RETURN_FROM_LONG_JUMP + mov rax, EFI_WARN_RETURN_FROM_LONG_JUMP + ret +TransferControlLongJump ENDP + +text ENDS +END |