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Allocator
Class CodeAllocator.x86CodeBuffer
java.lang.ObjectAllocator.CodeAllocator.x86CodeBuffer
- Direct Known Subclasses:
- RuntimeCodeAllocator.Runtimex86CodeBuffer
- Enclosing class:
- CodeAllocator
- public abstract static class CodeAllocator.x86CodeBuffer
- extends java.lang.Object
This class provides the interface for x86 code buffers. These code buffers are used to store generated x86 code. After the code is generated, use the allocateCodeBlock method to obtain a jq_CompiledCode object.
| Constructor Summary | |
CodeAllocator.x86CodeBuffer()
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| Method Summary | |
abstract void |
add1(byte i)
Adds one byte to the end of this code buffer. |
abstract void |
add2_endian(int i)
Adds two bytes (little-endian) to the end of this code buffer. |
abstract void |
add2(int i)
Adds two bytes (big-endian) to the end of this code buffer. |
abstract void |
add3(int i)
Adds three bytes (big-endian) to the end of this code buffer. |
abstract void |
add4_endian(int i)
Adds four bytes (little-endian) to the end of this code buffer. |
abstract Clazz.jq_CompiledCode |
allocateCodeBlock(Clazz.jq_Method m,
Clazz.jq_TryCatch[] ex,
Clazz.jq_BytecodeMap bcm,
Run_Time.ExceptionDeliverer x,
int stackframesize,
java.util.List codeRelocs,
java.util.List dataRelocs)
Uses the code in this buffer, along with the arguments, to create a jq_CompiledCode object. |
abstract byte |
get1(int k)
Gets the byte at the given offset in this code buffer. |
abstract int |
get4_endian(int k)
Gets the (little-endian) 4 bytes at the given offset in this code buffer. |
abstract Memory.CodeAddress |
getCurrentAddress()
Returns the current address in this code buffer. |
abstract int |
getCurrentOffset()
Returns the current offset in this code buffer. |
abstract Memory.CodeAddress |
getStartAddress()
Returns the current address in this code buffer. |
abstract void |
put1(int k,
byte instr)
Sets the byte at the given offset to the given value. |
abstract void |
put4_endian(int k,
int instr)
Sets the 4 bytes at the given offset to the given (little-endian) value. |
abstract void |
setEntrypoint()
Sets the current address as the entrypoint to this code buffer. |
abstract void |
skip(int nbytes)
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| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
CodeAllocator.x86CodeBuffer
public CodeAllocator.x86CodeBuffer()
| Method Detail |
getCurrentOffset
public abstract int getCurrentOffset()
- Returns the current offset in this code buffer.
getStartAddress
public abstract Memory.CodeAddress getStartAddress()
- Returns the current address in this code buffer.
getCurrentAddress
public abstract Memory.CodeAddress getCurrentAddress()
- Returns the current address in this code buffer.
setEntrypoint
public abstract void setEntrypoint()
- Sets the current address as the entrypoint to this code buffer.
add1
public abstract void add1(byte i)
- Adds one byte to the end of this code buffer. Offset/address
increase by 1.
add2_endian
public abstract void add2_endian(int i)
- Adds two bytes (little-endian) to the end of this code buffer.
Offset/address increase by 2.
add2
public abstract void add2(int i)
- Adds two bytes (big-endian) to the end of this code buffer.
Offset/address increase by 2.
add3
public abstract void add3(int i)
- Adds three bytes (big-endian) to the end of this code buffer.
Offset/address increase by 3.
add4_endian
public abstract void add4_endian(int i)
- Adds four bytes (little-endian) to the end of this code buffer.
Offset/address increase by 4.
get1
public abstract byte get1(int k)
- Gets the byte at the given offset in this code buffer.
get4_endian
public abstract int get4_endian(int k)
- Gets the (little-endian) 4 bytes at the given offset in this
code buffer.
put1
public abstract void put1(int k,
byte instr)
- Sets the byte at the given offset to the given value.
put4_endian
public abstract void put4_endian(int k,
int instr)
- Sets the 4 bytes at the given offset to the given (little-endian)
value.
skip
public abstract void skip(int nbytes)
allocateCodeBlock
public abstract Clazz.jq_CompiledCode allocateCodeBlock(Clazz.jq_Method m, Clazz.jq_TryCatch[] ex, Clazz.jq_BytecodeMap bcm, Run_Time.ExceptionDeliverer x, int stackframesize, java.util.List codeRelocs, java.util.List dataRelocs)
- Uses the code in this buffer, along with the arguments, to create
a jq_CompiledCode object. Call this method after you are done
generating code, and actually want to use it.
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