jvm_assembler/program/
instructions.rs

1/// JVM instruction enumeration
2#[derive(Debug, Clone, PartialEq, Eq, Hash)]
3pub enum JvmInstruction {
4    /// No operation
5    Nop,
6    /// Push null onto the stack
7    AconstNull,
8    /// Push int constant -1 onto the stack
9    IconstM1,
10    /// Push int constant 0 onto the stack
11    Iconst0,
12    /// Push int constant 1 onto the stack
13    Iconst1,
14    /// Push int constant 2 onto the stack
15    Iconst2,
16    /// Push int constant 3 onto the stack
17    Iconst3,
18    /// Push int constant 4 onto the stack
19    Iconst4,
20    /// Push int constant 5 onto the stack
21    Iconst5,
22    /// Push long constant 0 onto the stack
23    Lconst0,
24    /// Push long constant 1 onto the stack
25    Lconst1,
26    /// Push float constant 0 onto the stack
27    Fconst0,
28    /// Push float constant 1 onto the stack
29    Fconst1,
30    /// Push float constant 2 onto the stack
31    Fconst2,
32    /// Push double constant 0 onto the stack
33    Dconst0,
34    /// Push double constant 1 onto the stack
35    Dconst1,
36
37    /// Push byte constant onto the stack
38    Bipush {
39        /// The value
40        value: i8,
41    },
42    /// Push short constant onto the stack
43    Sipush {
44        /// The value
45        value: i16,
46    },
47
48    /// Push item from constant pool (int, float, or String)
49    Ldc {
50        /// The symbol name in the pool
51        symbol: String,
52    },
53    /// Push item from constant pool (wide index)
54    LdcW {
55        /// The symbol name in the pool
56        symbol: String,
57    },
58    /// Push long or double from constant pool (wide index)
59    Ldc2W {
60        /// The symbol name in the pool
61        symbol: String,
62    },
63
64    /// Load int from local variable
65    Iload {
66        /// Variable index
67        index: u16,
68    },
69    /// Load int from local variable 0
70    Iload0,
71    /// Load int from local variable 1
72    Iload1,
73    /// Load int from local variable 2
74    Iload2,
75    /// Load int from local variable 3
76    Iload3,
77
78    /// Load long from local variable
79    Lload {
80        /// Variable index
81        index: u16,
82    },
83    /// Load long from local variable 0
84    Lload0,
85    /// Load long from local variable 1
86    Lload1,
87    /// Load long from local variable 2
88    Lload2,
89    /// Load long from local variable 3
90    Lload3,
91
92    /// Load float from local variable
93    Fload {
94        /// Variable index
95        index: u16,
96    },
97    /// Load float from local variable 0
98    Fload0,
99    /// Load float from local variable 1
100    Fload1,
101    /// Load float from local variable 2
102    Fload2,
103    /// Load float from local variable 3
104    Fload3,
105
106    /// Load double from local variable
107    Dload {
108        /// Variable index
109        index: u16,
110    },
111    /// Load double from local variable 0
112    Dload0,
113    /// Load double from local variable 1
114    Dload1,
115    /// Load double from local variable 2
116    Dload2,
117    /// Load double from local variable 3
118    Dload3,
119
120    /// Load reference from local variable
121    Aload {
122        /// Variable index
123        index: u16,
124    },
125    /// Load reference from local variable 0
126    Aload0,
127    /// Load reference from local variable 1
128    Aload1,
129    /// Load reference from local variable 2
130    Aload2,
131    /// Load reference from local variable 3
132    Aload3,
133
134    /// Load int from array
135    Iaload,
136    /// Load long from array
137    Laload,
138    /// Load float from array
139    Faload,
140    /// Load double from array
141    Daload,
142    /// Load reference from array
143    Aaload,
144    /// Load byte or boolean from array
145    Baload,
146    /// Load char from array
147    Caload,
148    /// Load short from array
149    Saload,
150
151    /// Store int into local variable
152    Istore {
153        /// Variable index
154        index: u16,
155    },
156    /// Store int into local variable 0
157    Istore0,
158    /// Store int into local variable 1
159    Istore1,
160    /// Store int into local variable 2
161    Istore2,
162    /// Store int into local variable 3
163    Istore3,
164
165    /// Store long into local variable
166    Lstore {
167        /// Variable index
168        index: u16,
169    },
170    /// Store long into local variable 0
171    Lstore0,
172    /// Store long into local variable 1
173    Lstore1,
174    /// Store long into local variable 2
175    Lstore2,
176    /// Store long into local variable 3
177    Lstore3,
178
179    /// Store float into local variable
180    Fstore {
181        /// Variable index
182        index: u16,
183    },
184    /// Store float into local variable 0
185    Fstore0,
186    /// Store float into local variable 1
187    Fstore1,
188    /// Store float into local variable 2
189    Fstore2,
190    /// Store float into local variable 3
191    Fstore3,
192
193    /// Store double into local variable
194    Dstore {
195        /// Variable index
196        index: u16,
197    },
198    /// Store double into local variable 0
199    Dstore0,
200    /// Store double into local variable 1
201    Dstore1,
202    /// Store double into local variable 2
203    Dstore2,
204    /// Store double into local variable 3
205    Dstore3,
206
207    /// Store reference into local variable
208    Astore {
209        /// Variable index
210        index: u16,
211    },
212    /// Store reference into local variable 0
213    Astore0,
214    /// Store reference into local variable 1
215    Astore1,
216    /// Store reference into local variable 2
217    Astore2,
218    /// Store reference into local variable 3
219    Astore3,
220
221    /// Store int into array
222    Iastore,
223    /// Store long into array
224    Lastore,
225    /// Store float into array
226    Fastore,
227    /// Store double into array
228    Dastore,
229    /// Store reference into array
230    Aastore,
231    /// Store byte or boolean into array
232    Bastore,
233    /// Store char into array
234    Castore,
235    /// Store short into array
236    Sastore,
237
238    /// Pop top operand stack value
239    Pop,
240    /// Pop top two operand stack values
241    Pop2,
242    /// Duplicate top operand stack value
243    Dup,
244    /// Duplicate top operand stack value and insert two values down
245    DupX1,
246    /// Duplicate top operand stack value and insert three values down
247    DupX2,
248    /// Duplicate top two operand stack values
249    Dup2,
250    /// Duplicate top two operand stack values and insert three values down
251    Dup2X1,
252    /// Duplicate top two operand stack values and insert four values down
253    Dup2X2,
254    /// Swap top two operand stack values
255    Swap,
256
257    /// Add int
258    Iadd,
259    /// Add long
260    Ladd,
261    /// Add float
262    Fadd,
263    /// Add double
264    Dadd,
265    /// Subtract int
266    Isub,
267    /// Subtract long
268    Lsub,
269    /// Subtract float
270    Fsub,
271    /// Subtract double
272    Dsub,
273    /// Multiply int
274    Imul,
275    /// Multiply long
276    Lmul,
277    /// Multiply float
278    Fmul,
279    /// Multiply double
280    Dmul,
281    /// Divide int
282    Idiv,
283    /// Divide long
284    Ldiv,
285    /// Divide float
286    Fdiv,
287    /// Divide double
288    Ddiv,
289    /// Remainder int
290    Irem,
291    /// Remainder long
292    Lrem,
293    /// Remainder float
294    Frem,
295    /// Remainder double
296    Drem,
297    /// Negate int
298    Ineg,
299    /// Negate long
300    Lneg,
301    /// Negate float
302    Fneg,
303    /// Negate double
304    Dneg,
305
306    /// Shift left int
307    Ishl,
308    /// Shift left long
309    Lshl,
310    /// Arithmetic shift right int
311    Ishr,
312    /// Arithmetic shift right long
313    Lshr,
314    /// Logical shift right int
315    Iushr,
316    /// Logical shift right long
317    Lushr,
318    /// Bitwise AND int
319    Iand,
320    /// Bitwise AND long
321    Land,
322    /// Bitwise OR int
323    Ior,
324    /// Bitwise OR long
325    Lor,
326    /// Bitwise XOR int
327    Ixor,
328    /// Bitwise XOR long
329    Lxor,
330
331    /// Increment local variable by constant
332    Iinc {
333        /// Variable index
334        index: u16,
335        /// Increment value
336        value: i16,
337    },
338
339    /// Convert int to long
340    I2l,
341    /// Convert int to float
342    I2f,
343    /// Convert int to double
344    I2d,
345    /// Convert long to int
346    L2i,
347    /// Convert long to float
348    L2f,
349    /// Convert long to double
350    L2d,
351    /// Convert float to int
352    F2i,
353    /// Convert float to long
354    F2l,
355    /// Convert float to double
356    F2d,
357    /// Convert double to int
358    D2i,
359    /// Convert double to long
360    D2l,
361    /// Convert double to float
362    D2f,
363    /// Convert int to byte
364    I2b,
365    /// Convert int to char
366    I2c,
367    /// Convert int to short
368    I2s,
369
370    /// Compare long
371    Lcmp,
372    /// Compare float (less than returns -1)
373    Fcmpl,
374    /// Compare float (greater than returns 1)
375    Fcmpg,
376    /// Compare double (less than returns -1)
377    Dcmpl,
378    /// Compare double (greater than returns 1)
379    Dcmpg,
380
381    /// Jump if zero
382    Ifeq {
383        /// Target label
384        target: String,
385    },
386    /// Jump if not zero
387    Ifne {
388        /// Target label
389        target: String,
390    },
391    /// Jump if less than zero
392    Iflt {
393        /// Target label
394        target: String,
395    },
396    /// Jump if greater than or equal to zero
397    Ifge {
398        /// Target label
399        target: String,
400    },
401    /// Jump if greater than zero
402    Ifgt {
403        /// Target label
404        target: String,
405    },
406    /// Jump if less than or equal to zero
407    Ifle {
408        /// Target label
409        target: String,
410    },
411    /// Jump if int comparison succeeds (equal)
412    IfIcmpeq {
413        /// Target label
414        target: String,
415    },
416    /// Jump if int comparison succeeds (not equal)
417    IfIcmpne {
418        /// Target label
419        target: String,
420    },
421    /// Jump if int comparison succeeds (less than)
422    IfIcmplt {
423        /// Target label
424        target: String,
425    },
426    /// Jump if int comparison succeeds (greater than or equal)
427    IfIcmpge {
428        /// Target label
429        target: String,
430    },
431    /// Jump if int comparison succeeds (greater than)
432    IfIcmpgt {
433        /// Target label
434        target: String,
435    },
436    /// Jump if int comparison succeeds (less than or equal)
437    IfIcmple {
438        /// Target label
439        target: String,
440    },
441    /// Jump if reference comparison succeeds (equal)
442    IfAcmpeq {
443        /// Target label
444        target: String,
445    },
446    /// Jump if reference comparison succeeds (not equal)
447    IfAcmpne {
448        /// Target label
449        target: String,
450    },
451
452    /// Unconditional jump
453    Goto {
454        /// Target label
455        target: String,
456    },
457    /// Jump to subroutine (deprecated)
458    Jsr {
459        /// Target label
460        target: String,
461    },
462    /// Return from subroutine (deprecated)
463    Ret {
464        /// Variable index
465        index: u16,
466    },
467
468    /// Jump index into table and jump
469    Tableswitch {
470        /// Default target label
471        default: String,
472        /// Low key value
473        low: i32,
474        /// High key value
475        high: i32,
476        /// Jump offsets labels
477        offsets: Vec<String>,
478    },
479    /// Match key in table and jump
480    Lookupswitch {
481        /// Default target label
482        default: String,
483        /// Number of pairs
484        npairs: i32,
485        /// Match value and target label pairs
486        match_offsets: Vec<(i32, String)>,
487    },
488
489    /// Return int from method
490    Ireturn,
491    /// Return long from method
492    Lreturn,
493    /// Return float from method
494    Freturn,
495    /// Return double from method
496    Dreturn,
497    /// Return reference from method
498    Areturn,
499    /// Return void from method
500    Return,
501
502    /// Get static field from class
503    Getstatic {
504        /// Class name
505        class_name: String,
506        /// Field name
507        field_name: String,
508        /// Field descriptor
509        descriptor: String,
510    },
511    /// Set static field in class
512    Putstatic {
513        /// Class name
514        class_name: String,
515        /// Field name
516        field_name: String,
517        /// Field descriptor
518        descriptor: String,
519    },
520    /// Get field from object
521    Getfield {
522        /// Class name
523        class_name: String,
524        /// Field name
525        field_name: String,
526        /// Field descriptor
527        descriptor: String,
528    },
529    /// Set field in object
530    Putfield {
531        /// Class name
532        class_name: String,
533        /// Field name
534        field_name: String,
535        /// Field descriptor
536        descriptor: String,
537    },
538
539    /// Invoke instance method; dispatch based on class
540    Invokevirtual {
541        /// Class name
542        class_name: String,
543        /// Method name
544        method_name: String,
545        /// Method descriptor
546        descriptor: String,
547    },
548    /// Invoke instance method; special handling for superclass, private, and instance initialization method invocations
549    Invokespecial {
550        /// Class name
551        class_name: String,
552        /// Method name
553        method_name: String,
554        /// Method descriptor
555        descriptor: String,
556    },
557    /// Invoke a class (static) method
558    Invokestatic {
559        /// Class name
560        class_name: String,
561        /// Method name
562        method_name: String,
563        /// Method descriptor
564        descriptor: String,
565    },
566    /// Invoke interface method
567    Invokeinterface {
568        /// Class name
569        class_name: String,
570        /// Method name
571        method_name: String,
572        /// Method descriptor
573        descriptor: String,
574    },
575    /// Invoke dynamic method
576    Invokedynamic {
577        /// Class name
578        class_name: String,
579        /// Method name
580        method_name: String,
581        /// Method descriptor
582        descriptor: String,
583    },
584
585    /// Create new object
586    New {
587        /// Class name
588        class_name: String,
589    },
590    /// Create new array of primitive type
591    Newarray {
592        /// Type code
593        type_code: u8,
594    },
595    /// Create new array of reference type
596    Anewarray {
597        /// Class name
598        class_name: String,
599    },
600    /// Get length of array
601    Arraylength,
602    /// Throw exception or error
603    Athrow,
604    /// Check whether object is of given type
605    Checkcast {
606        /// Class name
607        class_name: String,
608    },
609    /// Determine if object is of given type
610    Instanceof {
611        /// Class name
612        class_name: String,
613    },
614    /// Enter monitor for object
615    Monitorenter,
616    /// Exit monitor for object
617    Monitorexit,
618
619    /// Extend local variable index by additional bytes
620    Wide,
621    /// Create new multidimensional array
622    Multianewarray {
623        /// Class name
624        class_name: String,
625        /// Number of dimensions
626        dimensions: u8,
627    },
628    /// Jump if reference is null
629    Ifnull {
630        /// Target label
631        target: String,
632    },
633    /// Jump if reference is not null
634    Ifnonnull {
635        /// Target label
636        target: String,
637    },
638    /// Unconditional jump (wide index)
639    GotoW {
640        /// Target label
641        target: String,
642    },
643    /// Jump to subroutine (wide index)
644    JsrW {
645        /// Target label
646        target: String,
647    },
648
649    /// Label (pseudo-instruction, does not generate bytecode)
650    Label {
651        /// Label name
652        name: String,
653    },
654}
jvm_assembler/program/instructions.rs

jvm_assembler/program/
instructions.rs
