x86指令编码表 [英] x86 instruction encoding tables
问题描述
我在我的重写汇编中间。而在这我很好奇实施拆装为好。我想让它简单，紧凑，并且有概念，而这样做，所以我可以利用。
I'm in middle of rewriting my assembler. While at it I'm curious about implementing disassembly as well. I want to make it simple and compact, and there's concepts I can exploit while doing so.
有可能确定从运code x86指令编码（也许preFIX字节需要太多，有点）的其余部分。我知道很多人都写为表做。
It is possible to determine rest of the x86 instruction encoding from opcode (maybe prefix bytes are required too, a bit). I know many people have written tables for doing it.
我不感兴趣约助记符但指令编码，因为这是一个实际的难题那里。对于每个运算code号我需要知道：
I'm not interested about mnemonics but instruction encoding, because it is an actual hard problem there. For each opcode number I need to know:
- 这是否说明包含modrm？
- 多少直接的领域这是否说明有哪些？
- 什么编码不立即使用？
- 在现场的指令指针-relative解决眼前的？
- 什么样的寄存器做操作数的modrm使用和注册领域？
sandpile.org有几分颇多我需要的东西，但它的格式是不容易的解析。
sandpile.org has somewhat quite much what I'd need, but it's in format that isn't easy to parse.
我开始编写和验证这些表自己之前，我决定写这个问题。你知道这种现有地方的表？在不需要太多精力来解析的形式。
Before I start writing and validating those tables myself, I decided to write this question. Do you know about this kind of tables existing somewhere? In a form that doesn't require too much effort to parse.
b byte
w word
v word or dword (or qword), depends on operand size attribute (0x66)
z word or dword (or dword), depends on operand size attribute
J instruction-relative address (next character describes type)
G instruction group, has modrm-field (next character describes operand type)
R has modrm-field (next two characters describe register and operand type)
M modrm, but operand field must point to memory
O direct offset (next character describes type)
F FPU
T separate table
_ defined, but no arguments
x 0 1 2 3 4 5 6 7 8 9 A B C D E F
0 Rbb Rvv Rbb Rvv b z Rbb Rvv Rbb Rvv b z T
1 Rbb Rvv Rbb Rvv b z Rbb Rvv Rbb Rvv b z
2 Rbb Rvv Rbb Rvv b z Rbb Rvv Rbb Rvv b z
3 Rbb Rvv Rbb Rvv b z Rbb Rvv Rbb Rvv b z
4 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
6 _ _ Mvv z Rvvz b Rvvb
7 Jb Jb Jb Jb Jb Jb Jb Jb Jb Jb Jb Jb Jb Jb Jb Jb
8 Gbb Gvz Gbb Gvb Rbb Rvv Rbb Rvv Rbb Rvv Rbb Rvv Mvv
9 _ _ _ _ _ _ _ _ _ _ _ _
A Ob Ov Ob Ov _ _ _ _ b z _ _ _ _ _ _
B b b b b b b b b v v v v v v v v
C Gbb Gvb w _ _ b _ _
D Gb Gv Gb Gv F F F F F F F F
E Jz Jz Jb
F _ _ Gb Gv _ _ _ _ _ _ Gb Gv
在这里，我得到了一个操作数的表。格式是这样的，该表可以解析
直出从包含它的文本文件。我离开远一些CISC和分割相关的指令。
Here I've got the table for first operand. The format is such that the table can be parsed straight out from a text file that contains it. I left away some CISC and segmentation related instructions.
对于两字节指令的机会是我需要四个这样的表。对于三字节指令，我需要两个表多。 FPU指令需要8桌，这是幸运的很简单。从那以后，我不得不x86指令pretty大块掩盖。虽然我只是去只有一个或两个表的罚款。
For two-byte instructions the chances are I need four such tables. For three-byte instructions I'll need two tables more. FPU instructions require 8 tables, which are fortunately very simple. After that I'd have pretty large chunk of x86 instructions covered up. Though I go just fine with just one or two tables.
此外，一些指令组可能需要一些小数组识别指令类型。
Further, few instruction groups might require some small arrays to recognise instruction type.
推荐答案
我相信 ref.x86asm.net 可能有你重新寻找。这是所有的x86-64指令列表中，因此很容易解析XML格式。
I believe ref.x86asm.net might have what you're looking for. It's a list of all x86-64 instructions, in an XML format that should be easy to parse.
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