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-rwxr-xr-xUefiCpuPkg/CpuDxe/X64/CpuAsm.S356
1 files changed, 176 insertions, 180 deletions
diff --git a/UefiCpuPkg/CpuDxe/X64/CpuAsm.S b/UefiCpuPkg/CpuDxe/X64/CpuAsm.S
index 9d4c26190e..a6885454fc 100755
--- a/UefiCpuPkg/CpuDxe/X64/CpuAsm.S
+++ b/UefiCpuPkg/CpuDxe/X64/CpuAsm.S
@@ -1,4 +1,4 @@
-# TITLE CpuAsm.asm:
+# TITLE CpuAsm.S:
#------------------------------------------------------------------------------
#*
@@ -30,11 +30,10 @@
ExternalVectorTablePtr:
.byte 0, 0, 0, 0, 0, 0, 0, 0
-.intel_syntax
ASM_GLOBAL ASM_PFX(InitializeExternalVectorTablePtr)
ASM_PFX(InitializeExternalVectorTablePtr):
- lea %rax, [%rip+ExternalVectorTablePtr] # save vector number
- mov [%rax], %rcx
+ lea ExternalVectorTablePtr(%rip), %rax # save vector number
+ mov %rcx, (%rax)
ret
@@ -44,16 +43,15 @@ ASM_PFX(InitializeExternalVectorTablePtr):
# UINT16 Selector
# );
#------------------------------------------------------------------------------
-.intel_syntax
ASM_GLOBAL ASM_PFX(SetCodeSelector)
ASM_PFX(SetCodeSelector):
- sub %rsp, 0x10
- lea %rax, [%rip+setCodeSelectorLongJump]
- mov [%rsp], %rax
- mov [%rsp+4], %cx
- jmp fword ptr [%rsp]
+ subq $0x10, %rsp
+ leaq setCodeSelectorLongJump(%rip), %rax
+ movq %rax, (%rsp)
+ movw %cx, 4(%rsp)
+ .byte 0xFF, 0x2C, 0x24 # jmp (%rsp) note:fword jmp
setCodeSelectorLongJump:
- add %rsp, 0x10
+ addq $0x10, %rsp
ret
#------------------------------------------------------------------------------
@@ -62,14 +60,13 @@ setCodeSelectorLongJump:
# UINT16 Selector
# );
#------------------------------------------------------------------------------
-.intel_syntax
ASM_GLOBAL ASM_PFX(SetDataSelectors)
ASM_PFX(SetDataSelectors):
- mov %ss, %cx
- mov %ds, %cx
- mov %es, %cx
- mov %fs, %cx
- mov %gs, %cx
+ movw %cx, %ss
+ movw %cx, %ds
+ movw %cx, %es
+ movw %cx, %fs
+ movw %cx, %gs
ret
#---------------------------------------;
@@ -77,7 +74,6 @@ ASM_PFX(SetDataSelectors):
#---------------------------------------;
# The follow algorithm is used for the common interrupt routine.
-.intel_syntax
ASM_GLOBAL ASM_PFX(CommonInterruptEntry)
ASM_PFX(CommonInterruptEntry):
cli
@@ -88,14 +84,14 @@ ASM_PFX(CommonInterruptEntry):
#
# Calculate vector number
#
- xchg %rcx, [%rsp] # get the return address of call, actually, it is the address of vector number.
- movzx %ecx, word ptr [%rcx]
- cmp %ecx, 32 # Intel reserved vector for exceptions?
+ xchgq (%rsp), %rcx # get the return address of call, actually, it is the address of vector number.
+ movzwl (%rcx), %ecx
+ cmp $32, %ecx # Intel reserved vector for exceptions?
jae NoErrorCode
- push %rax
- lea %rax, [%rip+ASM_PFX(mErrorCodeFlag)]
- bt dword ptr [%rax], %ecx
- pop %rax
+ pushq %rax
+ leaq ASM_PFX(mErrorCodeFlag)(%rip), %rax
+ bt %ecx, (%rax)
+ popq %rax
jc CommonInterruptEntry_al_0000
NoErrorCode:
@@ -104,11 +100,11 @@ NoErrorCode:
# Push a dummy error code on the stack
# to maintain coherent stack map
#
- push [%rsp]
- mov qword ptr [%rsp + 8], 0
+ pushq (%rsp)
+ movq $0, 8(%rsp)
CommonInterruptEntry_al_0000:
- push %rbp
- mov %rbp, %rsp
+ pushq %rbp
+ movq %rsp, %rbp
#
# Stack:
@@ -140,219 +136,219 @@ CommonInterruptEntry_al_0000:
#; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
#; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
- push %r15
- push %r14
- push %r13
- push %r12
- push %r11
- push %r10
- push %r9
- push %r8
- push %rax
- push qword ptr [%rbp + 8] # RCX
- push %rdx
- push %rbx
- push qword ptr [%rbp + 48] # RSP
- push qword ptr [%rbp] # RBP
- push %rsi
- push %rdi
+ pushq %r15
+ pushq %r14
+ pushq %r13
+ pushq %r12
+ pushq %r11
+ pushq %r10
+ pushq %r9
+ pushq %r8
+ pushq %rax
+ pushq 8(%rbp) # RCX
+ pushq %rdx
+ pushq %rbx
+ pushq 48(%rbp) # RSP
+ pushq (%rbp) # RBP
+ pushq %rsi
+ pushq %rdi
#; UINT64 Gs, Fs, Es, Ds, Cs, Ss; insure high 16 bits of each is zero
- movzx %rax, word ptr [%rbp + 56]
- push %rax # for ss
- movzx %rax, word ptr [%rbp + 32]
- push %rax # for cs
- mov %rax, %ds
- push %rax
- mov %rax, %es
- push %rax
- mov %rax, %fs
- push %rax
- mov %rax, %gs
- push %rax
-
- mov [%rbp + 8], %rcx # save vector number
+ movzwq 56(%rbp), %rax
+ pushq %rax # for ss
+ movzwq 32(%rbp), %rax
+ pushq %rax # for cs
+ movq %ds, %rax
+ pushq %rax
+ movq %es, %rax
+ pushq %rax
+ movq %fs, %rax
+ pushq %rax
+ movq %gs, %rax
+ pushq %rax
+
+ movq %rcx, 8(%rbp) # save vector number
#; UINT64 Rip;
- push qword ptr [%rbp + 24]
+ pushq 24(%rbp)
#; UINT64 Gdtr[2], Idtr[2];
- xor %rax, %rax
- push %rax
- push %rax
- sidt [%rsp]
- xchg %rax, [%rsp + 2]
- xchg %rax, [%rsp]
- xchg %rax, [%rsp + 8]
-
- xor %rax, %rax
- push %rax
- push %rax
- sgdt [%rsp]
- xchg %rax, [%rsp + 2]
- xchg %rax, [%rsp]
- xchg %rax, [%rsp + 8]
+ xorq %rax, %rax
+ pushq %rax
+ pushq %rax
+ sidt (%rsp)
+ xchgq 2(%rsp), %rax
+ xchgq (%rsp), %rax
+ xchgq 8(%rsp), %rax
+
+ xorq %rax, %rax
+ pushq %rax
+ pushq %rax
+ sgdt (%rsp)
+ xchgq 2(%rsp), %rax
+ xchgq (%rsp), %rax
+ xchgq 8(%rsp), %rax
#; UINT64 Ldtr, Tr;
- xor %rax, %rax
+ xorq %rax, %rax
str %ax
- push %rax
+ pushq %rax
sldt %ax
- push %rax
+ pushq %rax
#; UINT64 RFlags;
- push qword ptr [%rbp + 40]
+ pushq 40(%rbp)
#; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;
- mov %rax, %cr8
- push %rax
- mov %rax, %cr4
- or %rax, 0x208
- mov %cr4, %rax
- push %rax
- mov %rax, %cr3
- push %rax
- mov %rax, %cr2
- push %rax
- xor %rax, %rax
- push %rax
- mov %rax, %cr0
- push %rax
+ movq %cr8, %rax
+ pushq %rax
+ movq %cr4, %rax
+ orq $0x208, %rax
+ movq %rax, %cr4
+ pushq %rax
+ mov %cr3, %rax
+ pushq %rax
+ mov %cr2, %rax
+ pushq %rax
+ xorq %rax, %rax
+ pushq %rax
+ mov %cr0, %rax
+ pushq %rax
#; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- mov %rax, %dr7
- push %rax
+ movq %dr7, %rax
+ pushq %rax
#; clear Dr7 while executing debugger itself
- xor %rax, %rax
- mov %dr7, %rax
+ xorq %rax, %rax
+ movq %rax, %dr7
- mov %rax, %dr6
- push %rax
+ movq %dr6, %rax
+ pushq %rax
#; insure all status bits in dr6 are clear...
- xor %rax, %rax
- mov %dr6, %rax
-
- mov %rax, %dr3
- push %rax
- mov %rax, %dr2
- push %rax
- mov %rax, %dr1
- push %rax
- mov %rax, %dr0
- push %rax
+ xorq %rax, %rax
+ movq %rax, %dr6
+
+ movq %dr3, %rax
+ pushq %rax
+ movq %dr2, %rax
+ pushq %rax
+ movq %dr1, %rax
+ pushq %rax
+ movq %dr0, %rax
+ pushq %rax
#; FX_SAVE_STATE_X64 FxSaveState;
- sub %rsp, 512
- mov %rdi, %rsp
+ subq $512, %rsp
+ movq %rsp, %rdi
.byte 0x0f, 0x0ae, 0x07 #fxsave [rdi]
#; UINT32 ExceptionData;
- push qword ptr [%rbp + 16]
+ pushq 16(%rbp)
#; call into exception handler
- mov %rcx, [%rbp + 8]
- lea %rax, [%rip+ExternalVectorTablePtr]
- mov %eax, [%eax]
- mov %rax, [%rax + %rcx * 8]
- or %rax, %rax # NULL?
+ movq 8(%rbp), %rcx
+ leaq ExternalVectorTablePtr(%rip), %rax
+ movl (%eax), %eax
+ movq (%rax,%rcx,8), %rax
+ orq %rax, %rax # NULL?
je nonNullValue#
#; Prepare parameter and call
# mov rcx, [rbp + 8]
- mov %rdx, %rsp
+ mov %rsp, %rdx
#
# Per X64 calling convention, allocate maximum parameter stack space
# and make sure RSP is 16-byte aligned
#
- sub %rsp, 4 * 8 + 8
- call %rax
- add %rsp, 4 * 8 + 8
+ subq $40, %rsp
+ call *%rax
+ addq $40, %rsp
nonNullValue:
cli
#; UINT64 ExceptionData;
- add %rsp, 8
+ addq $8, %rsp
#; FX_SAVE_STATE_X64 FxSaveState;
- mov %rsi, %rsp
+ movq %rsp, %rsi
.byte 0x0f, 0x0ae, 0x0E # fxrstor [rsi]
- add %rsp, 512
+ addq $512, %rsp
#; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- pop %rax
- mov %dr0, %rax
- pop %rax
- mov %dr1, %rax
- pop %rax
- mov %dr2, %rax
- pop %rax
- mov %dr3, %rax
+ popq %rax
+ movq %rax, %dr0
+ popq %rax
+ movq %rax, %dr1
+ popq %rax
+ movq %rax, %dr2
+ popq %rax
+ movq %rax, %dr3
#; skip restore of dr6. We cleared dr6 during the context save.
- add %rsp, 8
- pop %rax
- mov %dr7, %rax
+ addq $8, %rsp
+ popq %rax
+ movq %rax, %dr7
#; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;
- pop %rax
- mov %cr0, %rax
- add %rsp, 8 # not for Cr1
- pop %rax
- mov %cr2, %rax
- pop %rax
- mov %cr3, %rax
- pop %rax
- mov %cr4, %rax
- pop %rax
- mov %cr8, %rax
+ popq %rax
+ movq %rax, %cr0
+ addq $8, %rsp # not for Cr1
+ popq %rax
+ movq %rax, %cr2
+ popq %rax
+ movq %rax, %cr3
+ popq %rax
+ movq %rax, %cr4
+ popq %rax
+ movq %rax, %cr8
#; UINT64 RFlags;
- pop qword ptr [%rbp + 40]
+ popq 40(%rbp)
#; UINT64 Ldtr, Tr;
#; UINT64 Gdtr[2], Idtr[2];
#; Best not let anyone mess with these particular registers...
- add %rsp, 48
+ addq $48, %rsp
#; UINT64 Rip;
- pop qword ptr [%rbp + 24]
+ popq 24(%rbp)
#; UINT64 Gs, Fs, Es, Ds, Cs, Ss;
- pop %rax
- # mov gs, rax ; not for gs
- pop %rax
- # mov fs, rax ; not for fs
+ popq %rax
+ # mov %rax, %gs ; not for gs
+ popq %rax
+ # mov %rax, %fs ; not for fs
# (X64 will not use fs and gs, so we do not restore it)
- pop %rax
- mov %es, %rax
- pop %rax
- mov %ds, %rax
- pop qword ptr [%rbp + 32] # for cs
- pop qword ptr [%rbp + 56] # for ss
+ popq %rax
+ movq %rax, %es
+ popq %rax
+ movq %rax, %ds
+ popq 32(%rbp) # for cs
+ popq 56(%rbp) # for ss
#; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
#; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;
- pop %rdi
- pop %rsi
- add %rsp, 8 # not for rbp
- pop qword ptr [%rbp + 48] # for rsp
- pop %rbx
- pop %rdx
- pop %rcx
- pop %rax
- pop %r8
- pop %r9
- pop %r10
- pop %r11
- pop %r12
- pop %r13
- pop %r14
- pop %r15
-
- mov %rsp, %rbp
- pop %rbp
- add %rsp, 16
+ popq %rdi
+ popq %rsi
+ addq $8, %rsp # not for rbp
+ popq 48(%rbp) # for rsp
+ popq %rbx
+ popq %rdx
+ popq %rcx
+ popq %rax
+ popq %r8
+ popq %r9
+ popq %r10
+ popq %r11
+ popq %r12
+ popq %r13
+ popq %r14
+ popq %r15
+
+ movq %rbp, %rsp
+ popq %rbp
+ addq $16, %rsp
iretq
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