joeq.Bootstrap
Class BootstrapCodeAllocator.Bootstrapx86CodeBuffer

java.lang.Object
  joeq.Allocator.CodeAllocator.x86CodeBuffer
      joeq.Bootstrap.BootstrapCodeAllocator.Bootstrapx86CodeBuffer

Enclosing class:

BootstrapCodeAllocator

public class BootstrapCodeAllocator.Bootstrapx86CodeBuffer
extends CodeAllocator.x86CodeBuffer

Method Summary

void	add1(byte i) Adds one byte to the end of this code buffer.
void	add2_endian(int i) Adds two bytes (little-endian) to the end of this code buffer.
void	add2(int i) Adds two bytes (big-endian) to the end of this code buffer.
void	add3(int i) Adds three bytes (big-endian) to the end of this code buffer.
void	add4_endian(int i) Adds four bytes (little-endian) to the end of this code buffer.
jq_CompiledCode	allocateCodeBlock(jq_Method m, jq_TryCatch[] ex, jq_BytecodeMap bcm, ExceptionDeliverer exd, int stackframesize, List code_relocs, List data_relocs) Uses the code in this buffer, along with the arguments, to create a jq_CompiledCode object.
void	checkSize()
byte	get1(int k) Gets the byte at the given offset in this code buffer.
int	get4_endian(int k) Gets the (little-endian) 4 bytes at the given offset in this code buffer.
CodeAddress	getCurrentAddress() Returns the current address in this code buffer.
int	getCurrentOffset() Returns the current offset in this code buffer.
int	getEntryIndex()
CodeAddress	getStartAddress() Returns the current address in this code buffer.
int	getStartIndex()
void	put1(int k, byte instr) Sets the byte at the given offset to the given value.
void	put4_endian(int k, int instr) Sets the 4 bytes at the given offset to the given (little-endian) value.
void	setEntrypoint() Sets the current address as the entrypoint to this code buffer.
void	skip(int nbytes)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getStartIndex

public int getStartIndex()

getEntryIndex

public int getEntryIndex()

getCurrentOffset

public int getCurrentOffset()

Description copied from class: CodeAllocator.x86CodeBuffer

Returns the current offset in this code buffer.

Specified by:

getCurrentOffset in class CodeAllocator.x86CodeBuffer

Returns:

current offset

getStartAddress

public CodeAddress getStartAddress()

Description copied from class: CodeAllocator.x86CodeBuffer

Returns the current address in this code buffer.

Specified by:

getStartAddress in class CodeAllocator.x86CodeBuffer

Returns:

current address

getCurrentAddress

public CodeAddress getCurrentAddress()

Description copied from class: CodeAllocator.x86CodeBuffer

Returns the current address in this code buffer.

Specified by:

getCurrentAddress in class CodeAllocator.x86CodeBuffer

Returns:

current address

setEntrypoint

public void setEntrypoint()

Description copied from class: CodeAllocator.x86CodeBuffer

Sets the current address as the entrypoint to this code buffer.

Specified by:

setEntrypoint in class CodeAllocator.x86CodeBuffer

checkSize

public void checkSize()

add1

public void add1(byte i)

Description copied from class: CodeAllocator.x86CodeBuffer

Adds one byte to the end of this code buffer. Offset/address increase by 1.

Specified by:

add1 in class CodeAllocator.x86CodeBuffer

Parameters:

i - the byte to add

add2_endian

public void add2_endian(int i)

Description copied from class: CodeAllocator.x86CodeBuffer

Adds two bytes (little-endian) to the end of this code buffer. Offset/address increase by 2.

Specified by:

add2_endian in class CodeAllocator.x86CodeBuffer

Parameters:

i - the little-endian value to add

add2

public void add2(int i)

Description copied from class: CodeAllocator.x86CodeBuffer

Adds two bytes (big-endian) to the end of this code buffer. Offset/address increase by 2.

Specified by:

add2 in class CodeAllocator.x86CodeBuffer

Parameters:

i - the big-endian value to add

add3

public void add3(int i)

Description copied from class: CodeAllocator.x86CodeBuffer

Adds three bytes (big-endian) to the end of this code buffer. Offset/address increase by 3.

Specified by:

add3 in class CodeAllocator.x86CodeBuffer

Parameters:

i - the big-endian value to add

add4_endian

public void add4_endian(int i)

Description copied from class: CodeAllocator.x86CodeBuffer

Adds four bytes (little-endian) to the end of this code buffer. Offset/address increase by 4.

Specified by:

add4_endian in class CodeAllocator.x86CodeBuffer

Parameters:

i - the little-endian value to add

get1

public byte get1(int k)

Description copied from class: CodeAllocator.x86CodeBuffer

Gets the byte at the given offset in this code buffer.

Specified by:

get1 in class CodeAllocator.x86CodeBuffer

Parameters:

k - offset of byte to return

Returns:

byte at given offset

get4_endian

public int get4_endian(int k)

Description copied from class: CodeAllocator.x86CodeBuffer

Gets the (little-endian) 4 bytes at the given offset in this code buffer.

Specified by:

get4_endian in class CodeAllocator.x86CodeBuffer

Parameters:

k - offset of little-endian 4 bytes to return

Returns:

little-endian 4 bytes at given offset

put1

public void put1(int k,
                 byte instr)

Description copied from class: CodeAllocator.x86CodeBuffer

Sets the byte at the given offset to the given value.

Specified by:

put1 in class CodeAllocator.x86CodeBuffer

Parameters:

k - offset of byte to set

instr - value to set it to

put4_endian

public void put4_endian(int k,
                        int instr)

Description copied from class: CodeAllocator.x86CodeBuffer

Sets the 4 bytes at the given offset to the given (little-endian) value.

Specified by:

put4_endian in class CodeAllocator.x86CodeBuffer

Parameters:

k - offset of 4 bytes to set

instr - little-endian value to set it to

skip

public void skip(int nbytes)

Specified by:

skip in class CodeAllocator.x86CodeBuffer

allocateCodeBlock

public jq_CompiledCode allocateCodeBlock(jq_Method m,
                                         jq_TryCatch[] ex,
                                         jq_BytecodeMap bcm,
                                         ExceptionDeliverer exd,
                                         int stackframesize,
                                         List code_relocs,
                                         List data_relocs)

Description copied from class: CodeAllocator.x86CodeBuffer

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.

Specified by:

allocateCodeBlock in class CodeAllocator.x86CodeBuffer

Parameters:

m - Java method of this code block, or null if none

ex - exception handler table, or null if none

bcm - bytecode map, or null if none

exd - exception deliverer to use for this code, or null if none

stackframesize - size of stack frame in bytes

code_relocs - list of code relocations for this code buffer, or null if none

data_relocs - list of data relocations for this code buffer, or null if none

Returns:

a new jq_CompiledCode object for the code