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BR 3052618: handle segment register operations in 64-bit mode

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Handle segment register operations in 64-bit mode, and add a few
optimization patterns.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
H. Peter Anvin 2010-08-24 17:28:00 -07:00
parent 96e8d96045
commit 21d4ccc3c3
2 changed files with 75 additions and 4 deletions
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14
insns.dat
View file

@ -770,12 +770,18 @@ MFENCE void \3\x0F\xAE\xF0 X64,AMD
MONITOR void \3\x0F\x01\xC8 PRESCOTT
MONITOR reg_eax,reg_ecx,reg_edx \3\x0F\x01\xC8 PRESCOTT,ND
MONITOR reg_rax,reg_ecx,reg_edx \3\x0F\x01\xC8 X64,ND
MOV mem,reg_sreg \1\x8C\101 8086,SM
MOV mem,reg_sreg \1\x8C\101 8086,SW
MOV reg16,reg_sreg \320\1\x8C\101 8086
MOV reg32,reg_sreg \321\1\x8C\101 386
MOV reg_sreg,mem \1\x8E\110 8086,SM
MOV reg_sreg,reg16 \1\x8E\110 8086
MOV reg_sreg,reg32 \1\x8E\110 386
MOV reg64,reg_sreg \323\1\x8C\101 X64,OPT,ND
MOV rm64,reg_sreg \324\1\x8C\101 X64
MOV reg_sreg,mem \1\x8E\110 8086,SW
MOV reg_sreg,reg16 \1\x8E\110 8086,OPT,ND
MOV reg_sreg,reg32 \1\x8E\110 386,OPT,ND
MOV reg_sreg,reg64 \323\1\x8E\110 X64,OPT,ND
MOV reg_sreg,reg16 \320\1\x8E\110 8086
MOV reg_sreg,reg32 \321\1\x8E\110 386
MOV reg_sreg,rm64 \324\1\x8E\110 X64
MOV reg_al,mem_offs \1\xA0\45 8086,SM
MOV reg_ax,mem_offs \320\1\xA1\45 8086,SM
MOV reg_eax,mem_offs \321\1\xA1\45 386,SM

65
test/sreg.asm Normal file
View file

@ -0,0 +1,65 @@
bits 64
mov es,rax
mov ss,rax
mov ds,rax
mov fs,rax
mov gs,rax
mov es,eax
mov ss,eax
mov ds,eax
mov fs,eax
mov gs,eax
mov es,ax
mov ss,ax
mov ds,ax
mov fs,ax
mov gs,ax
mov es,[rsi]
mov ss,[rsi]
mov ds,[rsi]
mov fs,[rsi]
mov gs,[rsi]
mov es,word [rsi]
mov ss,word [rsi]
mov ds,word [rsi]
mov fs,word [rsi]
mov gs,word [rsi]
mov es,qword [rsi]
mov ss,qword [rsi]
mov ds,qword [rsi]
mov fs,qword [rsi]
mov gs,qword [rsi]
mov rax,es
mov rax,cs
mov rax,ss
mov rax,ds
mov rax,fs
mov rax,gs
mov eax,es
mov eax,ss
mov eax,ds
mov eax,fs
mov eax,fs
mov ax,es
mov ax,ss
mov ax,ds
mov ax,fs
mov ax,gs
mov [rdi],es
mov [rdi],cs
mov [rdi],ss
mov [rdi],ds
mov [rdi],fs
mov [rdi],gs
mov word [rdi],es
mov word [rdi],cs
mov word [rdi],ss
mov word [rdi],ds
mov word [rdi],fs
mov word [rdi],gs
mov qword [rdi],es
mov qword [rdi],cs
mov qword [rdi],ss
mov qword [rdi],ds
mov qword [rdi],fs
mov qword [rdi],gs