mirror of
https://github.com/herumi/xbyak
synced 2024-11-21 16:09:11 -07:00
add readme.md
This commit is contained in:
MITSUNARI Shigeo
parent
77878ed435
commit
ae930ad192
1 changed files with 214 additions and 0 deletions
214
readme.md
Normal file
214
readme.md
Normal file
|
|
@ -0,0 +1,214 @@
|
|||
|
||||
Xbyak 2.992 ; JIT assembler for x86(IA32), x64(AMD64, x86-64) by C++
|
||||
=============
|
||||
|
||||
Abstract
|
||||
-------------
|
||||
|
||||
This is a header file which enables dynamically to assemble x86(IA32), x64(AMD64, x86-64) mnemonic.
|
||||
|
||||
Feature
|
||||
-------------
|
||||
header file only
|
||||
you can use Xbyak's functions at once if xbyak.h is included.
|
||||
|
||||
### Supported Instructions Sets
|
||||
|
||||
MMX/MMX2/SSE/SSE2/SSE3/SSSE3/SSE4/FPU(*partial*)/AVX
|
||||
|
||||
### Supported OS
|
||||
|
||||
* Windows Xp, Vista, Windows 7(32bit, 64bit)
|
||||
* Linux(32bit, 64bit)
|
||||
* Intel Mac ready
|
||||
|
||||
### Supported Compilers
|
||||
|
||||
* Visual Studio C++ 2005 Express Ed., VC2008 Pro, VC2010
|
||||
* gcc 4.5
|
||||
* mingw 3.4.2
|
||||
* icc 7.2
|
||||
|
||||
>Note: "-fno-operator-names" option is required on gcc to avoid analyzing "and", "or", etc. as operators.
|
||||
|
||||
Install
|
||||
-------------
|
||||
|
||||
The following files are necessary. Please add the path to your compile directories.
|
||||
|
||||
* xbyak.h
|
||||
* xbyak_bin2hex.h
|
||||
* xbyak_mnemonic.h
|
||||
|
||||
Linux:
|
||||
|
||||
make install
|
||||
|
||||
These files are copied into /usr/local/include/xbyak
|
||||
|
||||
Syntax
|
||||
-------------
|
||||
|
||||
Make Xbyak::CodeGenerator and make the class method and get the function
|
||||
pointer by calling cgetCode() and casting the return value.
|
||||
|
||||
NASM Xbyak
|
||||
mov eax, ebx --> mov(eax, ebx);
|
||||
inc ecx inc(ecx);
|
||||
ret --> ret();
|
||||
|
||||
### Addressing
|
||||
|
||||
(ptr|dword|word|byte) [base + index * (1|2|4|8) + displacement]
|
||||
[rip + 32bit disp] ; x64 only
|
||||
|
||||
NASM Xbyak
|
||||
mov eax, [ebx+ecx] --> mov (eax, ptr[ebx+ecx]);
|
||||
test byte [esp], 4 --> test (byte [esp], 4);
|
||||
|
||||
>you can use ptr for almost memory access unless you specify the size of memory.
|
||||
|
||||
>dword, word and byte are class members, then don't use dword as unsigned int, for example.
|
||||
|
||||
### AVX
|
||||
|
||||
You can omit a destination for almost 3-op mnemonics.
|
||||
|
||||
vaddps(xmm1, xmm2, xmm3); // xmm1 <- xmm2 + xmm3
|
||||
vaddps(xmm2, xmm3); // xmm2 <- xmm2 + xmm3
|
||||
vaddps(xmm2, xmm3, ptr [rax]); // use ptr to access memory
|
||||
|
||||
### Label
|
||||
|
||||
L("L1");
|
||||
jmp ("L1");
|
||||
|
||||
jmp ("L2");
|
||||
...
|
||||
a few mnemonics(8-bit displacement jmp)
|
||||
...
|
||||
L("L2");
|
||||
|
||||
jmp ("L3", T_NEAR);
|
||||
...
|
||||
a lot of mnemonics(32-bit displacement jmp)
|
||||
...
|
||||
L("L3");
|
||||
|
||||
>Call hasUndefinedLabel() to verify your code has no undefined label.
|
||||
|
||||
#### 1. support @@, @f, @b like MASM
|
||||
|
||||
L("@@"); // <A>
|
||||
jmp("@b"); // jmp to <A>
|
||||
jmp("@f"); // jmp to <B>
|
||||
L("@@"); // <B>
|
||||
jmp("@b"); // jmp to <B>
|
||||
|
||||
#### 2. localization of label by calling inLocalLabel(), outLocallabel()
|
||||
|
||||
void func1()
|
||||
{
|
||||
inLocalLabel();
|
||||
L(".lp"); // <A>
|
||||
...
|
||||
jmp(".lp"); // jmpt to <A>
|
||||
outLocalLabel();
|
||||
}
|
||||
|
||||
void func2()
|
||||
{
|
||||
L(".lp"); // <B>
|
||||
func1();
|
||||
jmp(".lp"); // jmp to <B>
|
||||
}
|
||||
|
||||
### Code size
|
||||
The default max code size is 2048 bytes. Please set it in constructor of CodeGenerator() if you want to use large size.
|
||||
|
||||
class Quantize : public Xbyak::CodeGenerator {
|
||||
public:
|
||||
Quantize()
|
||||
: CodeGenerator(8192)
|
||||
{
|
||||
}
|
||||
...
|
||||
};
|
||||
|
||||
See *main.cpp*
|
||||
|
||||
Macro
|
||||
-------------
|
||||
|
||||
* **XBYAK32** is defined on 32bit.
|
||||
* **XBYAK64** is defined on 64bit.
|
||||
* **XBYAK64_WIN** is defined on 64bit Windows
|
||||
* **XBYAK64_GCC** is defined on 64bit gcc
|
||||
|
||||
Sample
|
||||
-------------
|
||||
|
||||
* test0.cpp ; tiny sample of Xbyak(x86, x64)
|
||||
* quantize.cpp ; JIT optimized quantization by fast division(x86 only)
|
||||
* calc.cpp ; assemble and estimate a given polynomial(x86, x64)
|
||||
* bf.cpp ; JIT brainfuck(x86, x64)
|
||||
|
||||
Remark
|
||||
-------------
|
||||
|
||||
The current version does not support 3D Now!, 80bit FPU load/store and some special mnemonics.
|
||||
Please mail to me if necessary.
|
||||
|
||||
License
|
||||
-------------
|
||||
|
||||
modified new BSD License
|
||||
http://www.opensource.org/licenses/bsd-license.php
|
||||
|
||||
History
|
||||
-------------
|
||||
|
||||
* 2011/Feb/10 ver 2.992 beta fadd, fsubr, etc support st0 omitted parameter
|
||||
* 2011/Feb/07 ver 2.991 beta fix pextrw reg, xmm, imm
|
||||
* 2011/Feb/04 ver 2.99 beta support AVX
|
||||
* 2010/Dec/08 ver 2.31 fix ptr [rip + 32bit offset], support rdtscp
|
||||
* 2010/Oct/19 ver 2.30 support pclmulqdq, aesdec, aesdeclast, aesenc, aesenclast, aesimc, aeskeygenassist
|
||||
* 2010/Jun/07 ver 2.29 fix call(<label>)
|
||||
* 2010/Jun/17 ver 2.28 move some member functions to public
|
||||
* 2010/Jun/01 ver 2.27 support encoding of mov(reg64, imm) like yasm(not nasm)
|
||||
* 2010/May/24 ver 2.26 fix sub(rsp, 1000)
|
||||
* 2010/Apr/26 ver 2.25 add jc/jnc(I forgot to implement them...)
|
||||
* 2010/Apr/16 ver 2.24 change the prototype of rewrite() method
|
||||
* 2010/Apr/15 ver 2.23 fix align() and xbyak_util.h for Mac
|
||||
* 2010/Feb/16 ver 2.22 fix inLocalLabel()/outLocalLabel()
|
||||
* 2009/Dec/09 ver 2.21 support cygwin(gcc 4.3.2)
|
||||
* 2009/Nov/28 support a part of FPU
|
||||
* 2009/Jun/25 fix mov(qword[rax], imm); (thanks to Martin)
|
||||
* 2009/Mar/10 fix redundant REX.W prefix on jmp/call reg64
|
||||
* 2009/Feb/24 add movq reg64, mmx/xmm; movq mmx/xmm, reg64
|
||||
* 2009/Feb/13 movd(xmm7, dword[eax]) drops 0x66 prefix (thanks to Gabest)
|
||||
* 2008/Dec/30 fix call in short relative address(thanks to kato san)
|
||||
* 2008/Sep/18 support @@, @f, @b and localization of label(thanks to nobu-q san)
|
||||
* 2008/Sep/18 support ptr [rip + 32bit offset] (thanks to Dango-Chu san)
|
||||
* 2008/Jun/03 fix align(). mov(ptr[eax],1) throws ERR_MEM_SIZE_IS_NOT_SPECIFIED.
|
||||
* 2008/Jun/02 support memory interface allocated by user
|
||||
* 2008/May/26 fix protect() to avoid invalid setting(thanks to shinichiro_h san)
|
||||
* 2008/Apr/30 add cmpxchg16b, cdqe
|
||||
* 2008/Apr/29 support x64
|
||||
* 2008/Apr/14 code refactoring
|
||||
* 2008/Mar/12 add bsr/bsf
|
||||
* 2008/Feb/14 fix output of sub eax, 1234 (thanks to Robert)
|
||||
* 2007/Nov/5 support lock, xadd, xchg
|
||||
* 2007/Nov/2 support SSSE3/SSE4 (thanks to Dango-Chu san)
|
||||
* 2007/Feb/4 fix the bug that exception doesn't occur under the condition which the offset of jmp mnemonic without T_NEAR is over 127.
|
||||
* 2007/Jan/21 fix the bug to create address like [disp] select smaller representation for mov (eax|ax|al, [disp])
|
||||
* 2007/Jan/4 first version
|
||||
|
||||
Author
|
||||
-------------
|
||||
|
||||
MITSUNARI Shigeo(herumi at nifty dot com)
|
||||
|
||||
---
|
||||
$Revision: 1.1 $
|
||||
$Date: 2011/02/10 01:17:36 $
|
||||
Loading…
Reference in a new issue