yuzu/xbyak
1
0
Fork 0
mirror of https://github.com/herumi/xbyak synced 2024-11-21 16:09:11 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

add Label L() for convenience

Browse source
This commit is contained in:
MITSUNARI Shigeo 2018-09-04 10:29:50 +09:00
parent 43e1558362
commit 613922bda3
5 changed files with 41 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
readme.md
View file

@ -1,5 +1,5 @@
# Xbyak 5.70 ; JIT assembler for x86(IA32), x64(AMD64, x86-64) by C++
# Xbyak 5.71 ; JIT assembler for x86(IA32), x64(AMD64, x86-64) by C++
## Abstract
@ -246,13 +246,14 @@ L(L1);
`assignL(dstLabel, srcLabel)` binds dstLabel with srcLabel.
```
Xbyak::Label label1, label2;
L(label1);
Label label2;
Label label1 = L(); // make label1 ; same to Label label1; L(label1);
...
jmp(label2); // jump to label1 by assignL
jmp(label2); // label2 is not determined here
...
assignL(label2, label1); // label2 <- label1
```
The `jmp` in the above code jumps to label1 assigned by `assignL`.
**Note**:
* srcLabel must be used in `L()`.
@ -391,6 +392,7 @@ modified new BSD License
http://opensource.org/licenses/BSD-3-Clause
## History
* 2018/Sep/04 ver 5.71 L() returns a new label instance
* 2018/Aug/27 ver 5.70 support setProtectMode() and DontUseProtect for read/exec setting
* 2018/Aug/24 ver 5.68 fix wrong VSIB encoding with vector index >= 16(thanks to petercaday)
* 2018/Aug/14 ver 5.67 remove mutable in Address ; fix setCacheHierarchy for cloud vm

7
readme.txt
View file

@ -1,5 +1,5 @@
C++用x86(IA-32), x64(AMD64, x86-64) JITアセンブラ Xbyak 5.70
C++用x86(IA-32), x64(AMD64, x86-64) JITアセンブラ Xbyak 5.71
-----------------------------------------------------------------------------
◎概要
@ -245,8 +245,8 @@ void func2()
更にラベルの割り当てを行うassignL(dstLabel, srcLabel)という命令も追加されました。
Label label1, label2;
L(label1);
Label label2;
Label label1 = L(); // Label label1; L(label1);と同じ意味
...
jmp(label2);
...
@ -373,6 +373,7 @@ sample/{echo,hello}.bfは http://www.kmonos.net/alang/etc/brainfuck.php から
-----------------------------------------------------------------------------
◎履歴
2018/08/27 ver 5.71 新しいlabelインスタンスを返すL()を追加
2018/08/27 ver 5.70 read/exec設定のためのsetProtectMode()とDontUseProtectの追加
2018/08/24 ver 5.68 indexが16以上のVSIBエンコーディングのバグ修正(thanks to petercaday)
2018/08/14 ver 5.67 Addressクラス内のmutableを削除 ; fix setCacheHierarchy for cloud vm

28
test/jmp.cpp
View file

@ -889,6 +889,34 @@ CYBOZU_TEST_AUTO(testNewLabel)
}
}
CYBOZU_TEST_AUTO(returnLabel)
{
struct Code : Xbyak::CodeGenerator {
Code()
{
xor_(eax, eax);
Label L1 = L();
test(eax, eax);
Label exit;
jnz(exit);
inc(eax); // 1
Label L2;
call(L2);
jmp(L1);
L(L2);
inc(eax); // 2
ret();
L(exit);
inc(eax); // 3
ret();
}
};
Code code;
int (*f)() = code.getCode<int (*)()>();
int r = f();
CYBOZU_TEST_EQUAL(r, 3);
}
CYBOZU_TEST_AUTO(testAssign)
{
struct Code : Xbyak::CodeGenerator {

3
xbyak/xbyak.h
View file

@ -105,7 +105,7 @@ namespace Xbyak {
enum {
DEFAULT_MAX_CODE_SIZE = 4096,
VERSION = 0x5700 /* 0xABCD = A.BC(D) */
VERSION = 0x5710 /* 0xABCD = A.BC(D) */
};
#ifndef MIE_INTEGER_TYPE_DEFINED
@ -2162,6 +2162,7 @@ public:
#endif
void L(const std::string& label) { labelMgr_.defineSlabel(label); }
void L(const Label& label) { labelMgr_.defineClabel(label); }
Label L() { Label label; L(label); return label; }
void inLocalLabel() { labelMgr_.enterLocal(); }
void outLocalLabel() { labelMgr_.leaveLocal(); }
/*

2
xbyak/xbyak_mnemonic.h
View file

@ -1,4 +1,4 @@
const char *getVersionString() const { return "5.70"; }
const char *getVersionString() const { return "5.71"; }
void adc(const Operand& op, uint32 imm) { opRM_I(op, imm, 0x10, 2); }
void adc(const Operand& op1, const Operand& op2) { opRM_RM(op1, op2, 0x10); }
void adcx(const Reg32e& reg, const Operand& op) { opGen(reg, op, 0xF6, 0x66, isREG32_REG32orMEM, NONE, 0x38); }