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Refine comments of X64 assembly files of MDE BaseLib.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6277 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
xli24
parent
405b567555
commit
2faf4da5f7
@ -38,7 +38,7 @@ ASM_PFX(AsmCpuidEx):
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push %rbx
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movl %ecx,%eax
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movl %edx,%ecx
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push %rax
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push %rax # save Index on stack
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cpuid
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mov 0x38(%rsp), %r10
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test %r10, %r10
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@ -57,6 +57,6 @@ L3:
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jrcxz L4
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mov %edx, (%rcx)
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L4:
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pop %rax
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pop %rax # restore Index to rax as return value
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pop %rbx
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ret
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@ -27,39 +27,39 @@
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# VOID
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# EFIAPI
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# InternalX86DisablePaging64 (
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# IN UINT16 Cs, %rdi
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# IN UINT64 EntryPoint, %rsi
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# IN UINT64 Context1, OPTIONAL %rdx
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# IN UINT32 Context2, OPTIONAL %rcx
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# IN UINT64 NewStack %r8
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# IN UINT16 Cs,
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# IN UINT64 EntryPoint,
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# IN UINT64 Context1, OPTIONAL
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# IN UINT32 Context2, OPTIONAL
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# IN UINT64 NewStack
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# );
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#------------------------------------------------------------------------------
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.global ASM_PFX(InternalX86DisablePaging64)
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ASM_PFX(InternalX86DisablePaging64):
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cli
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shl $0x20,%rcx
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shl $0x20,%rcx # rcx[32..47] <- Cs
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lea L1, %eax
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mov %r8d, %esi
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or %rax, %rcx
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or %rax, %rcx # rcx[0..47] <- Cs:@F
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mov %r9d, %edi
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mov 0x28(%rsp), %eax
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mov 0x28(%rsp), %eax # eax <- New Stack
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push %rcx
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ret
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ret # switch to compatibility mode
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L1:
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mov %eax,%esp
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mov %eax,%esp # set up new stack
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mov %cr0,%rax
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btr $0x1f,%eax
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mov %rax,%cr0
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mov %rax,%cr0 # disable paging
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mov $0xc0000080,%ecx
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rdmsr
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and $0xfe,%ah
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and $0xfe,%ah # clear LME
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wrmsr
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mov %cr4,%rax
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and $0xdf,%al
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and $0xdf,%al # clear PAE
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mov %rax,%cr4
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push %rdi
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push %rsi
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callq *%rdx
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jmp .
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push %rdi # push Context2
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push %rsi # push Context1
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callq *%rdx # transfer control to EntryPoint
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jmp . # no one should get here
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -26,36 +26,36 @@
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# VOID
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# EFIAPI
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# InternalX86EnablePaging64 (
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# IN UINT16 Cs, %rdi
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# IN UINT64 EntryPoint, %rsi
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# IN UINT64 Context1, OPTIONAL %rdx
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# IN UINT64 Context2, OPTIONAL %rcx
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# IN UINT64 NewStack %r8
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# IN UINT16 Cs,
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# IN UINT64 EntryPoint,
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# IN UINT64 Context1, OPTIONAL
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# IN UINT64 Context2, OPTIONAL
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# IN UINT64 NewStack
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# );
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#------------------------------------------------------------------------------
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.global ASM_PFX(InternalX86EnablePaging64)
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ASM_PFX(InternalX86EnablePaging64):
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cli
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pop %rax
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pop %rax # skip the return address
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callq Base
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Base:
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addl $(L1-Base),(%rsp)
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addl $(L1-Base),(%rsp) # offset for ret, seg is the 1st arg
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mov %cr4,%rax
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or $0x20,%al
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mov %rax,%cr4
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mov %rax,%cr4 # enable PAE
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mov $0xc0000080,%ecx
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rdmsr
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or $0x1,%ah
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or $0x1,%ah # set LME
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wrmsr
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mov %cr0,%rax
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bts $0x1f,%eax
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mov %rax,%cr0
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mov %rax,%cr0 # enable paging
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lret
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L1:
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L1: # long mode starts here
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addr32 mov (%esp),%rbx
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addr32 mov 0x8(%esp),%rcx
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addr32 mov 0x10(%esp),%rdx
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addr32 mov 0x18(%esp),%rsp
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add $-0x20,%rsp
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callq *%rbx
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jmp .
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jmp . # dead loop if EntryPoint() returned
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@ -1,6 +1,6 @@
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;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006, Intel Corporation
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; Copyright (c) 2006 - 2008, Intel Corporation
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; All rights reserved. This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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@ -40,14 +40,14 @@ InternalX86EnablePaging64 PROC
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call @Base
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@Base:
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add dword ptr [rsp], @F - @Base ; offset for far retf, seg is the 1st arg
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mov rax, cr4 ; mov eax, cr4
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mov rax, cr4
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or al, (1 SHL 5)
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mov cr4, rax ; enable PAE
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mov ecx, 0c0000080h
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rdmsr
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or ah, 1 ; set LME
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wrmsr
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mov rax, cr0 ; mov eax, cr0
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mov rax, cr0
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bts eax, 31
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mov cr0, rax ; enable paging
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retf
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 -2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -38,5 +38,5 @@ ASM_PFX(InternalLongJump):
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mov 0x30(%rcx), %r13
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mov 0x38(%rcx), %r14
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mov 0x40(%rcx), %r15
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mov %rdx, %rax
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mov %rdx, %rax # set return value
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jmp *0x48(%rcx)
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -32,6 +32,5 @@
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.global ASM_PFX(AsmReadMm0)
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.align 16
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ASM_PFX(AsmReadMm0):
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#DB 48h, 0fh, 7eh, 0c0h
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movd %mm0, %rax
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ret
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -32,6 +32,5 @@
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.global ASM_PFX(AsmReadMm1)
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.align 16
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ASM_PFX(AsmReadMm1):
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#DB 48h, 0fh, 7eh, 0c8h
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movd %mm1, %rax
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ret
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -32,6 +32,5 @@
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.global ASM_PFX(AsmReadMm2)
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.align 16
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ASM_PFX(AsmReadMm2):
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#DB 48h, 0fh, 7eh, 0d0h
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movd %mm2, %rax
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ret
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -32,6 +32,5 @@
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.global ASM_PFX(AsmReadMm3)
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.align 16
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ASM_PFX(AsmReadMm3):
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#DB 48h, 0fh, 7eh, 0d8h
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movd %mm3, %rax
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ret
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -32,6 +32,5 @@
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.global ASM_PFX(AsmReadMm4)
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.align 16
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ASM_PFX(AsmReadMm4):
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#DB 48h, 0fh, 7eh, 0e0h
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movd %mm4, %rax
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ret
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -32,6 +32,5 @@
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.global ASM_PFX(AsmReadMm5)
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.align 16
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ASM_PFX(AsmReadMm5):
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#DB 48h, 0fh, 7eh, 0e8h
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movd %mm5, %rax
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ret
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -32,6 +32,5 @@
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.global ASM_PFX(AsmReadMm6)
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.align 16
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ASM_PFX(AsmReadMm6):
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#DB 48h, 0fh, 7eh, 0f0h
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movd %mm6, %rax
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ret
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -32,6 +32,5 @@
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.global ASM_PFX(AsmReadMm7)
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.align 16
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ASM_PFX(AsmReadMm7):
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#DB 48h, 0fh, 7eh, 0f8h
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movd %mm7, %rax
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ret
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@ -1,6 +1,6 @@
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;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006, Intel Corporation
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; Copyright (c) 2006 - 2008, Intel Corporation
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; All rights reserved. This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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@ -26,7 +26,7 @@
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;------------------------------------------------------------------------------
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; UINTN
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; EFIAPI
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; AsmWriteDr6 (
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; AsmWriteDr5 (
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; IN UINTN Value
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; );
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;------------------------------------------------------------------------------
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@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@ -29,12 +29,11 @@
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# IN UINT32 Index,
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# IN UINT64 Value
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# );
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# TODO:
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#------------------------------------------------------------------------------
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.global ASM_PFX(AsmWriteMsr64)
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.align 16
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ASM_PFX(AsmWriteMsr64):
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mov %rdx, %rax
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shr $0x20, %rdx
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mov %rdx, %rax # meanwhile, rax <- return value
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shr $0x20, %rdx # edx:eax contains the value to write
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wrmsr
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ret
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