#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>

Macros
#define	J_CLASS_BEGIN {}
	Readability macro to mark where class generation starts.

#define	J_CLASS_END {}
	Readability macro to mark where class generation ends.

#define	ACC_PUBLIC 0x0001
	Class or method is public (accessible from anywhere).

#define	ACC_PRIVATE 0x0002
	Class or method is private (accessible only within the defining class).

#define	ACC_PROTECTED 0x0004
	Class or method is protected (accessible within the same package and subclasses).

#define	ACC_STATIC 0x0008
	Class, method, or field is static (belongs to the class rather than instances).

#define	ACC_FINAL 0x0010
	Class or method is final (cannot be subclassed or overridden).

#define	ACC_SUPER 0x0020
	Class uses the "super" keyword for method calls.

#define	ACC_SYNCHRONIZED 0x0020
	Method is synchronized (can only be executed by one thread at a time).

#define	ACC_NATIVE 0x0100
	Method is native (implemented in a language other than Java, such as C or Assembly).

#define	ACC_INTERFACE 0x0200
	Class is an interface (cannot have instance fields or non-abstract methods).

#define	ACC_ABSTRACT 0x0400
	Class is abstract (cannot be instantiated).

#define	ACC_STRICT 0x0800
	Method is strict (follows strict floating-point calculations).

#define	u1(v) (uint8_t)(v)
	Creates a byte from the given value.

#define	u2(v)
	Creates 2 bytes from the given value.

#define	u4(v)
	Creates 4 bytes from the given value.

#define	BUFFER_SIZE 65536
	The size of the buffer for bytecode, may be overidden if needed.

Enumerations
enum	{ T_BOOLEAN = 4 , T_CHAR = 5 , T_FLOAT = 6 , T_DOUBLE = 7 , T_BYTE = 8 , T_SHORT = 9 , T_INT = 10 , T_LONG = 11 }
	The magic numbers for primitive types in java. More...

Functions
static void	emit_byte (uint8_t b)
	Helper function. Do not use unless you know what you're doing.

static void	emit_u1 (uint8_t v)
	Writes a byte to the buffer.

static void	emit_u2 (uint16_t v)
	Takes a uint16_t and splits it into 2 bytes (0x1024 -> { 0x10, 0x24 }), which it then writes into the buffer.

static void	emit_u4 (uint32_t v)
	Splits a uint32_t into 4 bytes (0x12345678 -> { 0x12, 0x34, 0x56, 0x78 }) and writes them into the buffer.

static size_t	current_offset ()
	Returns the current buffer position that will be emitted to.

static void	patch_u2 (size_t pos, uint16_t v)
	Places 2 bytes in the given position in the buffer (0x1024 -> (0x10 -> pos) & (0x24 -> pos + 1))

static void	patch_u4 (size_t pos, uint32_t v)
	Places 4 bytes in the given position in the buffer (0x12345678 -> (0x12 -> pos) & (0x34 -> pos + 1) & (0x56 -> pos + 2) & (0x78 -> pos + 3))

void	constant_pool_start ()
	Begins the constant pool.

static void	increment_cp_counter ()
	Helper function. Do not use unless you know what you are doing.

void	constant_utf8 (const char *string)
	Converts a char* to a constant UTF-8 string.

void	constant_integer (uint32_t value)
	Creates a constant integer.

void	constant_float (uint32_t value)
	Creates a constant float.

void	constant_long (uint64_t value)
	Creates a constant long.

void	constant_double (uint64_t value)
	Creates a constant double.

void	constant_class (uint16_t name_index)
	Creates a constant class reference.

void	constant_string (uint16_t string_index)
	Creates a constant string from a constant UTF-8.

void	constant_fieldref (uint16_t class_index, uint16_t name_and_type_index)
	Builds a reference to a field.

void	constant_methodref (uint16_t class_index, uint16_t name_and_type_index)
	Builds a reference to a method.

void	constant_interfacemethodref (uint16_t class_index, uint16_t name_and_type_index)
	Builds a reference to a method from an interface.

void	constant_nameandtype (uint16_t name_index, uint16_t descriptor_index)
	Builds a name and type.

void	constant_pool_end ()
	Marks the end of the constant pool.

void	interfaces_start ()
	Marks the start of the list of interfaces the class is using.

void	interface_entry (uint16_t interface_val)
	Adds a new interface to the list.

void	interfaces_end ()
	Marks the end of the list of interfaces.

void	attributes_start ()
	Marks the start of the list of attributes the class has.

void	attribute_start (uint16_t attribute_name_index)
	Marks the start of a new attribute.

void	attribute_end ()
	Marks the end of an attribute.

void	attributes_end ()
	Marks the start of the attributes section.

void	fields_start ()
	Marks the start of the fields section.

void	field_info (uint16_t access_flags, uint16_t name_index, uint16_t descriptor_index)
	Creates a new field and begins it's attributes section.

void	end_field_info ()
	Ends the current fields attributes section and the field itself.

void	fields_end ()
	Marks the end of the fields section.

void	methods_start ()
	Marks the start of the methods section.

void	method_info (uint16_t access_flags, uint16_t name_index, uint16_t descriptor_index)
	Creates a new method and begins it's attributes section.

void	end_method_info ()
	Ends the current methods attributes section and the method itself.

void	methods_end ()
	Marks the end of the methods section.

void	bytecode_start ()
	Marks the start of a bytecode section.

void	bytecode_end ()
	Marks the end of a bytecode section.

void	exceptions_start ()
	Marks the start of an exceptions section.

void	exception_entry (uint16_t start_pc, uint16_t end_pc, uint16_t handler_pc, uint16_t catch_type)

void	exceptions_end ()
	Marks the end of a bytecode section.

void	aaload ()

void	aastore ()

void	aconst_null ()

void	aload (uint16_t index)

void	anewarray (uint16_t class_index)

void	areturn ()

void	arraylength ()

void	astore (uint16_t index)

void	athrow ()

void	baload ()

void	bastore ()

void	bipush (int8_t byte_val)

void	caload ()

void	castore ()

void	checkcast (uint16_t class_index)

void	d2f ()

void	d2i ()

void	d2l ()

void	dadd ()

void	daload ()

void	dastore ()

void	dcmpg ()

void	dcmpl ()

void	dconst_0 ()

void	dconst_1 ()

void	ddiv ()

void	dload (uint16_t index)

void	dmul ()

void	dneg ()

void	j_drem ()

void	dreturn ()

void	dstore (uint16_t index)

void	dsub ()

void	dup ()

void	dup_x1 ()

void	dup_x2 ()

void	dup2 ()

void	dup2_x1 ()

void	dup2_x2 ()

void	f2d ()

void	f2i ()

void	f2l ()

void	fadd ()

void	faload ()

void	fastore ()

void	fcmpg ()

void	fcmpl ()

void	fconst_0 ()

void	fconst_1 ()

void	fconst_2 ()

void	fdiv ()

void	fload (uint16_t index)

void	fmul ()

void	fneg ()

void	frem ()

void	freturn ()

void	fstore (uint16_t index)

void	fsub ()

void	getfield (uint16_t index)

void	getstatic (uint16_t index)

void	goto_inst (size_t branch_target)

void	goto_w_inst (size_t branch_target)

void	i2b ()

void	i2c ()

void	i2d ()

void	i2f ()

void	i2l ()

void	i2s ()

void	iadd ()

void	iaload ()

void	iand ()

void	iastore ()

void	iconst_m1 ()

void	iconst_0 ()

void	iconst_1 ()

void	iconst_2 ()

void	iconst_3 ()

void	iconst_4 ()

void	iconst_5 ()

void	idiv ()

void	if_acmpeq (size_t branch_target)

void	if_acmpne (size_t branch_target)

void	if_icmpeq (size_t branch_target)

void	if_icmpne (size_t branch_target)

void	if_icmplt (size_t branch_target)

void	if_icmpge (size_t branch_target)

void	if_icmpgt (size_t branch_target)

void	if_icmple (size_t branch_target)

void	ifeq (size_t branch_target)

void	ifne (size_t branch_target)

void	iflt (size_t branch_target)

void	ifge (size_t branch_target)

void	ifgt (size_t branch_target)

void	ifle (size_t branch_target)

void	ifnonnull (size_t branch_target)

void	ifnull (size_t branch_target)

void	iinc (uint16_t index, int16_t constant_val)

void	iload (uint16_t index)

void	imul ()

void	ineg ()

void	instanceof (uint16_t index)

void	invokedynamic (uint16_t index)

void	invokeinterface (uint16_t index, uint8_t count)

void	invokespecial (uint16_t index)

void	invokestatic (uint16_t index)

void	invokevirtual (uint16_t index)

void	ior ()

void	irem ()

void	ireturn ()

void	ishl ()

void	ishr ()

void	istore (uint16_t index)

void	isub ()

void	iushr ()

void	ixor ()

void	jsr_inst (size_t branch_target)

void	jsr_w_inst (size_t branch_target)

void	l2d ()

void	l2f ()

void	l2i ()

void	ladd ()

void	laload ()

void	land ()

void	lastore ()

void	lcmp ()

void	lconst_0 ()

void	lconst_1 ()

void	ldc (uint16_t index)

void	ldc_w (uint16_t index)

void	ldc2_w (uint16_t index)

void	j_ldiv ()

void	lload (uint16_t index)

void	lmul ()

void	lneg ()

void	lor ()

void	lrem ()

void	lreturn ()

void	lshl ()

void	lshr ()

void	lstore (uint16_t index)

void	lsub ()

void	lushr ()

void	lxor ()

void	monitorenter ()

void	monitorexit ()

void	multianewarray (uint16_t index, uint8_t dimensions)

void	new_inst (uint16_t index)

void	newarray (uint8_t atype)

void	nop ()

void	pop_inst ()

void	pop2 ()

void	putfield (uint16_t index)

void	putstatic (uint16_t index)

void	ret_inst (uint16_t index)

void	return_inst ()

void	saload ()

void	sastore ()

void	sipush (uint16_t value)

void	swap ()

void	breakpoint ()

void	impdep1 ()

void	impdep2 ()

void	impdep2_dup ()

static void	emit_class_header ()

static void	emit_class_footer (uint16_t this_class, uint8_t this_class_flags, uint16_t super_class)

void	code_attribute_start (uint16_t name_index, uint16_t max_stack, uint16_t max_locals)

void	code_attribute_end ()

Variables
static uint8_t	outputBuffer [BUFFER_SIZE]
	Output buffer where the JVM bytecode is stored.

static size_t	outputIndex = 0
	Current index of the output buffer.

static size_t	cp_count_offset = 0
	Do not modify.

static uint16_t	constant_pool_counter = 0
	Keeps track of the size of the constant pool.

static size_t	interfaces_count_offset = 0
	Do not modify.

static uint16_t	interfaces_counter = 0
	Keeps track of how many interfaces there are.

static size_t	attributes_count_offset = 0
	Do not modify.

static uint16_t	attributes_counter = 0
	Tracks how many attributes there are.

size_t	attribute_start_offset = 0

static size_t	fields_count_offset = 0

static uint16_t	fields_counter = 0
	Counts the amount of fields in the class.

static size_t	methods_count_offset = 0

static uint16_t	methods_counter = 0
	Counts the amount of methods in the class.

static size_t	bytecode_length_offset = 0

static size_t	bytecode_offset = 0

static size_t	exception_table_length_offset = 0

static uint16_t	exception_counter = 0

Macro Definition Documentation

◆ ACC_ABSTRACT

#define ACC_ABSTRACT 0x0400

Class is abstract (cannot be instantiated).

◆ ACC_FINAL

#define ACC_FINAL 0x0010

Class or method is final (cannot be subclassed or overridden).

◆ ACC_INTERFACE

#define ACC_INTERFACE 0x0200

Class is an interface (cannot have instance fields or non-abstract methods).

◆ ACC_NATIVE

#define ACC_NATIVE 0x0100

Method is native (implemented in a language other than Java, such as C or Assembly).

◆ ACC_PRIVATE

#define ACC_PRIVATE 0x0002

Class or method is private (accessible only within the defining class).

◆ ACC_PROTECTED

#define ACC_PROTECTED 0x0004

Class or method is protected (accessible within the same package and subclasses).

◆ ACC_PUBLIC

#define ACC_PUBLIC 0x0001

Class or method is public (accessible from anywhere).

◆ ACC_STATIC

#define ACC_STATIC 0x0008

Class, method, or field is static (belongs to the class rather than instances).

◆ ACC_STRICT

#define ACC_STRICT 0x0800

Method is strict (follows strict floating-point calculations).

◆ ACC_SUPER

#define ACC_SUPER 0x0020

Class uses the "super" keyword for method calls.

◆ ACC_SYNCHRONIZED

#define ACC_SYNCHRONIZED 0x0020

Method is synchronized (can only be executed by one thread at a time).

◆ BUFFER_SIZE

#define BUFFER_SIZE 65536

The size of the buffer for bytecode, may be overidden if needed.

◆ J_CLASS_BEGIN

#define J_CLASS_BEGIN {}

Readability macro to mark where class generation starts.

◆ J_CLASS_END

#define J_CLASS_END {}

Readability macro to mark where class generation ends.

◆ u1

#define u1 ( v ) (uint8_t)(v)

Creates a byte from the given value.

Parameters

v	The value to make the byte out of

◆ u2

#define u2 ( v )

Value:

    { \
    (uint8_t)(((v) >> 8) & 0xFF), \
    (uint8_t)((v) & 0xFF) \
}

Creates 2 bytes from the given value.

Parameters

v	The value to make the bytes out of

◆ u4

#define u4 ( v )

Value:

    { \
    (uint8_t)((v) >> 24), \
    (uint8_t)(((v) >> 16) & 0xFF), \
    (uint8_t)(((v) >> 8) & 0xFF), \
    (uint8_t)((v) & 0xFF) \
}

Creates 4 bytes from the given value.

Parameters

v	The value to make the bytes out of

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

The magic numbers for primitive types in java.

Enumerator
T_BOOLEAN
T_CHAR
T_FLOAT
T_DOUBLE
T_BYTE
T_SHORT
T_INT
T_LONG

Function Documentation

◆ aaload()

void aaload ( )

◆ aastore()

void aastore ( )

◆ aconst_null()

void aconst_null ( )

◆ aload()

void aload ( uint16_t index )

◆ anewarray()

void anewarray ( uint16_t class_index )

◆ areturn()

void areturn ( )

◆ arraylength()

void arraylength ( )

◆ astore()

void astore ( uint16_t index )

◆ athrow()

void athrow ( )

◆ attribute_end()

void attribute_end ( )

Marks the end of an attribute.

◆ attribute_start()

void attribute_start ( uint16_t attribute_name_index )

Marks the start of a new attribute.

Parameters

attribute_name_index Constant pool index of the name of the attribute

◆ attributes_end()

void attributes_end ( )

Marks the start of the attributes section.

◆ attributes_start()

void attributes_start ( )

Marks the start of the list of attributes the class has.

◆ baload()

void baload ( )

◆ bastore()

void bastore ( )

◆ bipush()

void bipush ( int8_t byte_val )

◆ breakpoint()

void breakpoint ( )

◆ bytecode_end()

void bytecode_end ( )

Marks the end of a bytecode section.

◆ bytecode_start()

void bytecode_start ( )

Marks the start of a bytecode section.

◆ caload()

void caload ( )

◆ castore()

void castore ( )

◆ checkcast()

void checkcast ( uint16_t class_index )

◆ code_attribute_end()

void code_attribute_end ( )

◆ code_attribute_start()

void code_attribute_start	(	uint16_t	name_index,
		uint16_t	max_stack,
		uint16_t	max_locals
	)

◆ constant_class()

void constant_class ( uint16_t name_index )

Creates a constant class reference.

Parameters

name_index The index of the UTF-8 which is the class name (java/lang/Object)

◆ constant_double()

void constant_double ( uint64_t value )

Creates a constant double.

Parameters

value The 64 bit value to add to the constant pool

◆ constant_fieldref()

void constant_fieldref	(	uint16_t	class_index,
		uint16_t	name_and_type_index
	)

Builds a reference to a field.

Parameters

class_index	Constant pool index of the class from which the field is from
name_and_type_index	Constant pool index of the name and type of the field

◆ constant_float()

void constant_float ( uint32_t value )

Creates a constant float.

Parameters

value The float to add to the constant pool

◆ constant_integer()

void constant_integer ( uint32_t value )

Creates a constant integer.

Parameters

value The integer to add to the constant pool

◆ constant_interfacemethodref()

void constant_interfacemethodref	(	uint16_t	class_index,
		uint16_t	name_and_type_index
	)

Builds a reference to a method from an interface.

Parameters

class_index	Constant pool index of the class from which the field is from
name_and_type_index	Constant pool index of the name and type of the field

◆ constant_long()

void constant_long ( uint64_t value )

Creates a constant long.

Parameters

value The 64 bit value to add to the constant pool

◆ constant_methodref()

void constant_methodref	(	uint16_t	class_index,
		uint16_t	name_and_type_index
	)

Builds a reference to a method.

Parameters

class_index	Constant pool index of the class from which the field is from
name_and_type_index	Constant pool index of the name and type of the field

◆ constant_nameandtype()

void constant_nameandtype	(	uint16_t	name_index,
		uint16_t	descriptor_index
	)

Builds a name and type.

Parameters

name_index	Constant pool index of the name
descriptor_index	Constant pool index of the descriptor, a return type and params

◆ constant_pool_end()

void constant_pool_end ( )

Marks the end of the constant pool.

◆ constant_pool_start()

void constant_pool_start ( )

Begins the constant pool.

◆ constant_string()

void constant_string ( uint16_t string_index )

Creates a constant string from a constant UTF-8.

Parameters

string_index Constant pool index of the UTF-8

◆ constant_utf8()

void constant_utf8 ( const char * string )

Converts a char* to a constant UTF-8 string.

Parameters

string The string to convert

◆ current_offset()

static size_t current_offset ( )

static

Returns the current buffer position that will be emitted to.

◆ d2f()

void d2f ( )

◆ d2i()

void d2i ( )

◆ d2l()

void d2l ( )

◆ dadd()

void dadd ( )

◆ daload()

void daload ( )

◆ dastore()

void dastore ( )

◆ dcmpg()

void dcmpg ( )

◆ dcmpl()

void dcmpl ( )

◆ dconst_0()

void dconst_0 ( )

◆ dconst_1()

void dconst_1 ( )

◆ ddiv()

void ddiv ( )

◆ dload()

void dload ( uint16_t index )

◆ dmul()

void dmul ( )

◆ dneg()

void dneg ( )

◆ dreturn()

void dreturn ( )

◆ dstore()

void dstore ( uint16_t index )

◆ dsub()

void dsub ( )

◆ dup()

void dup ( )

◆ dup2()

void dup2 ( )

◆ dup2_x1()

void dup2_x1 ( )

◆ dup2_x2()

void dup2_x2 ( )

◆ dup_x1()

void dup_x1 ( )

◆ dup_x2()

void dup_x2 ( )

◆ emit_byte()

static void emit_byte ( uint8_t b )

static

Helper function. Do not use unless you know what you're doing.

◆ emit_class_footer()

static void emit_class_footer	(	uint16_t	this_class,
		uint8_t	this_class_flags,
		uint16_t	super_class
	)

static

◆ emit_class_header()

static void emit_class_header ( )

static

◆ emit_u1()

static void emit_u1 ( uint8_t v )

static

Writes a byte to the buffer.

Parameters

v	The value to place in the buffer

◆ emit_u2()

static void emit_u2 ( uint16_t v )

static

Takes a uint16_t and splits it into 2 bytes (0x1024 -> { 0x10, 0x24 }), which it then writes into the buffer.

Parameters

v	The two values to place in the buffer

◆ emit_u4()

static void emit_u4 ( uint32_t v )

static

Splits a uint32_t into 4 bytes (0x12345678 -> { 0x12, 0x34, 0x56, 0x78 }) and writes them into the buffer.

Parameters

v	The values to place into the buffer

◆ end_field_info()

void end_field_info ( )

Ends the current fields attributes section and the field itself.

◆ end_method_info()

void end_method_info ( )

Ends the current methods attributes section and the method itself.

◆ exception_entry()

void exception_entry	(	uint16_t	start_pc,
		uint16_t	end_pc,
		uint16_t	handler_pc,
		uint16_t	catch_type
	)

◆ exceptions_end()

void exceptions_end ( )

Marks the end of a bytecode section.

◆ exceptions_start()

void exceptions_start ( )

Marks the start of an exceptions section.

◆ f2d()

void f2d ( )

◆ f2i()

void f2i ( )

◆ f2l()

void f2l ( )

◆ fadd()

void fadd ( )

◆ faload()

void faload ( )

◆ fastore()

void fastore ( )

◆ fcmpg()

void fcmpg ( )

◆ fcmpl()

void fcmpl ( )

◆ fconst_0()

void fconst_0 ( )

◆ fconst_1()

void fconst_1 ( )

◆ fconst_2()

void fconst_2 ( )

◆ fdiv()

void fdiv ( )

◆ field_info()

void field_info	(	uint16_t	access_flags,
		uint16_t	name_index,
		uint16_t	descriptor_index
	)

Creates a new field and begins it's attributes section.

Parameters

access_flags	The JVM flags for the field
name_index	Constant pool index of the name of the field
descriptor_index	The constant pool index of the decriptor for the field

◆ fields_end()

void fields_end ( )

Marks the end of the fields section.

◆ fields_start()

void fields_start ( )

Marks the start of the fields section.

◆ fload()

void fload ( uint16_t index )

◆ fmul()

void fmul ( )

◆ fneg()

void fneg ( )

◆ frem()

void frem ( )

◆ freturn()

void freturn ( )

◆ fstore()

void fstore ( uint16_t index )

◆ fsub()

void fsub ( )

◆ getfield()

void getfield ( uint16_t index )

◆ getstatic()

void getstatic ( uint16_t index )

◆ goto_inst()

void goto_inst ( size_t branch_target )

◆ goto_w_inst()

void goto_w_inst ( size_t branch_target )

◆ i2b()

void i2b ( )

◆ i2c()

void i2c ( )

◆ i2d()

void i2d ( )

◆ i2f()

void i2f ( )

◆ i2l()

void i2l ( )

◆ i2s()

void i2s ( )

◆ iadd()

void iadd ( )

◆ iaload()

void iaload ( )

◆ iand()

void iand ( )

◆ iastore()

void iastore ( )

◆ iconst_0()

void iconst_0 ( )

◆ iconst_1()

void iconst_1 ( )

◆ iconst_2()

void iconst_2 ( )

◆ iconst_3()

void iconst_3 ( )

◆ iconst_4()

void iconst_4 ( )

◆ iconst_5()

void iconst_5 ( )

◆ iconst_m1()

void iconst_m1 ( )

◆ idiv()

void idiv ( )

◆ if_acmpeq()

void if_acmpeq ( size_t branch_target )

◆ if_acmpne()

void if_acmpne ( size_t branch_target )

◆ if_icmpeq()

void if_icmpeq ( size_t branch_target )

◆ if_icmpge()

void if_icmpge ( size_t branch_target )

◆ if_icmpgt()

void if_icmpgt ( size_t branch_target )

◆ if_icmple()

void if_icmple ( size_t branch_target )

◆ if_icmplt()

void if_icmplt ( size_t branch_target )

◆ if_icmpne()

void if_icmpne ( size_t branch_target )

◆ ifeq()

void ifeq ( size_t branch_target )

◆ ifge()

void ifge ( size_t branch_target )

◆ ifgt()

void ifgt ( size_t branch_target )

◆ ifle()

void ifle ( size_t branch_target )

◆ iflt()

void iflt ( size_t branch_target )

◆ ifne()

void ifne ( size_t branch_target )

◆ ifnonnull()

void ifnonnull ( size_t branch_target )

◆ ifnull()

void ifnull ( size_t branch_target )

◆ iinc()

void iinc	(	uint16_t	index,
		int16_t	constant_val
	)

◆ iload()

void iload ( uint16_t index )

◆ impdep1()

void impdep1 ( )

◆ impdep2()

void impdep2 ( )

◆ impdep2_dup()

void impdep2_dup ( )

◆ imul()

void imul ( )

◆ increment_cp_counter()

static void increment_cp_counter ( )

static

Helper function. Do not use unless you know what you are doing.

◆ ineg()

void ineg ( )

◆ instanceof()

void instanceof ( uint16_t index )

◆ interface_entry()

void interface_entry ( uint16_t interface_val )

Adds a new interface to the list.

Parameters

interface_val No idea

◆ interfaces_end()

void interfaces_end ( )

Marks the end of the list of interfaces.

◆ interfaces_start()

void interfaces_start ( )

Marks the start of the list of interfaces the class is using.

◆ invokedynamic()

void invokedynamic ( uint16_t index )

◆ invokeinterface()

void invokeinterface	(	uint16_t	index,
		uint8_t	count
	)

◆ invokespecial()

void invokespecial ( uint16_t index )

◆ invokestatic()

void invokestatic ( uint16_t index )

◆ invokevirtual()

void invokevirtual ( uint16_t index )

◆ ior()

void ior ( )

◆ irem()

void irem ( )

◆ ireturn()

void ireturn ( )

◆ ishl()

void ishl ( )

◆ ishr()

void ishr ( )

◆ istore()

void istore ( uint16_t index )

◆ isub()

void isub ( )

◆ iushr()

void iushr ( )

◆ ixor()

void ixor ( )

◆ j_drem()

void j_drem ( )

◆ j_ldiv()

void j_ldiv ( )

◆ jsr_inst()

void jsr_inst ( size_t branch_target )

◆ jsr_w_inst()

void jsr_w_inst ( size_t branch_target )

◆ l2d()

void l2d ( )

◆ l2f()

void l2f ( )

◆ l2i()

void l2i ( )

◆ ladd()

void ladd ( )

◆ laload()

void laload ( )

◆ land()

void land ( )

◆ lastore()

void lastore ( )

◆ lcmp()

void lcmp ( )

◆ lconst_0()

void lconst_0 ( )

◆ lconst_1()

void lconst_1 ( )

◆ ldc()

void ldc ( uint16_t index )

◆ ldc2_w()

void ldc2_w ( uint16_t index )

◆ ldc_w()

void ldc_w ( uint16_t index )

◆ lload()

void lload ( uint16_t index )

◆ lmul()

void lmul ( )

◆ lneg()

void lneg ( )

◆ lor()

void lor ( )

◆ lrem()

void lrem ( )

◆ lreturn()

void lreturn ( )

◆ lshl()

void lshl ( )

◆ lshr()

void lshr ( )

◆ lstore()

void lstore ( uint16_t index )

◆ lsub()

void lsub ( )

◆ lushr()

void lushr ( )

◆ lxor()

void lxor ( )

◆ method_info()

void method_info	(	uint16_t	access_flags,
		uint16_t	name_index,
		uint16_t	descriptor_index
	)

Creates a new method and begins it's attributes section.

Parameters

access_flags	The JVM flags for the method
name_index	Constant pool index of the name of the method
descriptor_index	The constant pool index of the decriptor for the method

◆ methods_end()

void methods_end ( )

Marks the end of the methods section.

◆ methods_start()

void methods_start ( )

Marks the start of the methods section.

◆ monitorenter()

void monitorenter ( )

◆ monitorexit()

void monitorexit ( )

◆ multianewarray()

void multianewarray	(	uint16_t	index,
		uint8_t	dimensions
	)

◆ new_inst()

void new_inst ( uint16_t index )

◆ newarray()

void newarray ( uint8_t atype )

◆ nop()

void nop ( )

◆ patch_u2()

static void patch_u2	(	size_t	pos,
		uint16_t	v
	)

static

Places 2 bytes in the given position in the buffer (0x1024 -> (0x10 -> pos) & (0x24 -> pos + 1))

Parameters

pos	Where in the buffer to place the bytes
v	The two bytes to place

◆ patch_u4()

static void patch_u4	(	size_t	pos,
		uint32_t	v
	)

static

Places 4 bytes in the given position in the buffer (0x12345678 -> (0x12 -> pos) & (0x34 -> pos + 1) & (0x56 -> pos + 2) & (0x78 -> pos + 3))

Parameters

pos	The 4 bytes to place in the buffer

◆ pop2()

void pop2 ( )

◆ pop_inst()

void pop_inst ( )

◆ putfield()

void putfield ( uint16_t index )

◆ putstatic()

void putstatic ( uint16_t index )

◆ ret_inst()

void ret_inst ( uint16_t index )

◆ return_inst()

void return_inst ( )

◆ saload()

void saload ( )

◆ sastore()

void sastore ( )

◆ sipush()

void sipush ( uint16_t value )

◆ swap()

void swap ( )

Variable Documentation

◆ attribute_start_offset

size_t attribute_start_offset = 0

◆ attributes_count_offset

size_t attributes_count_offset = 0

static

Do not modify.

◆ attributes_counter

uint16_t attributes_counter = 0

static

Tracks how many attributes there are.

◆ bytecode_length_offset

size_t bytecode_length_offset = 0

static

◆ bytecode_offset

size_t bytecode_offset = 0

static

◆ constant_pool_counter

uint16_t constant_pool_counter = 0

static

Keeps track of the size of the constant pool.

◆ cp_count_offset

size_t cp_count_offset = 0

static

Do not modify.

◆ exception_counter

uint16_t exception_counter = 0

static

◆ exception_table_length_offset

size_t exception_table_length_offset = 0

static

◆ fields_count_offset

size_t fields_count_offset = 0

static

◆ fields_counter

uint16_t fields_counter = 0

static

Counts the amount of fields in the class.

◆ interfaces_count_offset

size_t interfaces_count_offset = 0

static

Do not modify.

◆ interfaces_counter

uint16_t interfaces_counter = 0

static

Keeps track of how many interfaces there are.

◆ methods_count_offset

size_t methods_count_offset = 0

static

◆ methods_counter

uint16_t methods_counter = 0

static

Counts the amount of methods in the class.

◆ outputBuffer

uint8_t outputBuffer[BUFFER_SIZE]

static

Output buffer where the JVM bytecode is stored.

◆ outputIndex

size_t outputIndex = 0

static

Current index of the output buffer.

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

◆ ACC_ABSTRACT

◆ ACC_FINAL

◆ ACC_INTERFACE

◆ ACC_NATIVE

◆ ACC_PRIVATE

◆ ACC_PROTECTED

◆ ACC_PUBLIC

◆ ACC_STATIC

◆ ACC_STRICT

◆ ACC_SUPER

◆ ACC_SYNCHRONIZED

◆ BUFFER_SIZE

◆ J_CLASS_BEGIN

◆ J_CLASS_END

◆ u1

◆ u2

◆ u4

Enumeration Type Documentation

◆ anonymous enum

Function Documentation

◆ aaload()

◆ aastore()

◆ aconst_null()

◆ aload()

◆ anewarray()

◆ areturn()

◆ arraylength()

◆ astore()

◆ athrow()

◆ attribute_end()

◆ attribute_start()

◆ attributes_end()

◆ attributes_start()

◆ baload()

◆ bastore()

◆ bipush()

◆ breakpoint()

◆ bytecode_end()

◆ bytecode_start()

◆ caload()

◆ castore()

◆ checkcast()

◆ code_attribute_end()

◆ code_attribute_start()

◆ constant_class()

◆ constant_double()

◆ constant_fieldref()

◆ constant_float()

◆ constant_integer()

◆ constant_interfacemethodref()

◆ constant_long()

◆ constant_methodref()

◆ constant_nameandtype()

◆ constant_pool_end()

◆ constant_pool_start()

◆ constant_string()

◆ constant_utf8()

◆ current_offset()

◆ d2f()

◆ d2i()

◆ d2l()

◆ dadd()

◆ daload()

◆ dastore()

◆ dcmpg()

◆ dcmpl()

◆ dconst_0()

◆ dconst_1()

◆ ddiv()

◆ dload()

◆ dmul()

◆ dneg()

◆ dreturn()

◆ dstore()

◆ dsub()