To protect your data, the CISO officer has suggested users to enable GitLab 2FA as soon as possible.

asm_backend.rs 121 KB
Newer Older
1
2
#![allow(dead_code)]

3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
use compiler::backend::AOT_EMIT_CONTEXT_FILE;
use compiler::backend::RegGroup;
use utils::ByteSize;
use utils::Address;
use utils::POINTER_SIZE;
use compiler::backend::aarch64::*;

use compiler::backend::{Reg, Mem};
use compiler::machine_code::MachineCode;
use vm::VM;
use runtime::ValueLocation;

use utils::vec_utils;
use utils::string_utils;
use utils::LinkedHashMap;

use ast::ptr::P;
use ast::ir::*;

use std::str;
use std::usize;
use std::slice::Iter;
use std::ops;
26
use std::collections::HashSet;
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519

struct ASMCode {
    name: MuName,
    code: Vec<ASMInst>,

    entry:  MuName,
    blocks: LinkedHashMap<MuName, ASMBlock>,

    frame_size_patchpoints: Vec<ASMLocation>
}

unsafe impl Send for ASMCode {}
unsafe impl Sync for ASMCode {}

impl ASMCode {
    fn get_use_locations(&self, reg: MuID) -> Vec<ASMLocation> {
        let mut ret = vec![];

        for inst in self.code.iter() {
            match inst.uses.get(&reg) {
                Some(ref locs) => {
                    ret.append(&mut locs.to_vec());
                },
                None => {}
            }
        }

        ret
    }

    fn get_define_locations(&self, reg: MuID) -> Vec<ASMLocation> {
        let mut ret = vec![];

        for inst in self.code.iter() {
            match inst.defines.get(&reg) {
                Some(ref locs) => {
                    ret.append(&mut locs.to_vec());
                },
                None => {}
            }
        }

        ret
    }

    fn is_block_start(&self, inst: usize) -> bool {
        for block in self.blocks.values() {
            if block.start_inst == inst {
                return true;
            }
        }
        false
    }

    fn is_last_inst_in_block(&self, inst: usize) -> bool {
        for block in self.blocks.values() {
            if block.end_inst == inst + 1 {
                return true;
            }
        }
        false
    }

    fn get_block_by_inst(&self, inst: usize) -> (&String, &ASMBlock) {
        for (name, block) in self.blocks.iter() {
            if inst >= block.start_inst && inst < block.end_inst {
                return (name, block);
            }
        }

        panic!("didnt find any block for inst {}", inst)
    }

    fn get_block_by_start_inst(&self, inst: usize) -> Option<&ASMBlock> {
        for block in self.blocks.values() {
            if block.start_inst == inst {
                return Some(block);
            }
        }

        None
    }

    fn rewrite_insert(
        &self,
        insert_before: LinkedHashMap<usize, Vec<Box<ASMCode>>>,
        insert_after: LinkedHashMap<usize, Vec<Box<ASMCode>>>) -> Box<ASMCode>
    {
        trace!("insert spilling code");
        let mut ret = ASMCode {
            name: self.name.clone(),
            entry: self.entry.clone(),
            code: vec![],
            blocks: linked_hashmap!{},
            frame_size_patchpoints: vec![]
        };

        // iterate through old machine code
        let mut inst_offset = 0;    // how many instructions has been inserted
        let mut cur_block_start = usize::MAX;

        // inst N in old machine code is N' in new machine code
        // this map stores the relationship
        let mut location_map : LinkedHashMap<usize, usize> = LinkedHashMap::new();

        for i in 0..self.number_of_insts() {
            trace!("Inst{}", i);

            if self.is_block_start(i) {
                cur_block_start = i + inst_offset;
                trace!("  block start is shifted to {}", cur_block_start);
            }

            // insert code before this instruction
            if insert_before.contains_key(&i) {
                for insert in insert_before.get(&i).unwrap() {
                    ret.append_code_sequence_all(insert);
                    inst_offset += insert.number_of_insts();
                    trace!("  inserted {} insts before", insert.number_of_insts());
                }
            }

            // copy this instruction
            let mut inst = self.code[i].clone();

            // old ith inst is now the (i + inst_offset)th instruction
            location_map.insert(i, i + inst_offset);
            trace!("  Inst{} is now Inst{}", i, i + inst_offset);

            // this instruction has been offset by several instructions('inst_offset')
            // update its info
            // 1. fix defines and uses
            for locs in inst.defines.values_mut() {
                for loc in locs {
                    debug_assert!(loc.line == i);
                    loc.line += inst_offset;
                }
            }
            for locs in inst.uses.values_mut() {
                for loc in locs {
                    debug_assert!(loc.line == i);
                    loc.line += inst_offset;
                }
            }
            // 2. we need to delete existing preds/succs - CFA is required later
            inst.preds.clear();
            inst.succs.clear();
            // 3. add the inst
            ret.code.push(inst);


            // insert code after this instruction
            if insert_after.contains_key(&i) {
                for insert in insert_after.get(&i).unwrap() {
                    ret.append_code_sequence_all(insert);
                    inst_offset += insert.number_of_insts();
                    trace!("  inserted {} insts after", insert.number_of_insts());
                }
            }

            if self.is_last_inst_in_block(i) {
                let cur_block_end = i + 1 + inst_offset;

                // copy the block
                let (name, block) = self.get_block_by_inst(i);

                let new_block = ASMBlock{
                    start_inst: cur_block_start,
                    end_inst: cur_block_end,

                    livein: vec![],
                    liveout: vec![]
                };

                trace!("  old block: {:?}", block);
                trace!("  new block: {:?}", new_block);

                cur_block_start = usize::MAX;

                // add to the new code
                ret.blocks.insert(name.clone(), new_block);
            }
        }

        // fix patchpoint
        for patchpoint in self.frame_size_patchpoints.iter() {
            let new_patchpoint = ASMLocation {
                line: *location_map.get(&patchpoint.line).unwrap(),
                index: patchpoint.index,
                len: patchpoint.len,
                oplen: patchpoint.oplen
            };

            ret.frame_size_patchpoints.push(new_patchpoint);
        }

        ret.control_flow_analysis();

        Box::new(ret)
    }

    fn append_code_sequence(
        &mut self,
        another: &Box<ASMCode>,
        start_inst: usize,
        n_insts: usize)
    {
        let base_line = self.number_of_insts();

        for i in 0..n_insts {
            let cur_line_in_self = base_line + i;
            let cur_line_from_copy = start_inst + i;

            let mut inst = another.code[cur_line_from_copy].clone();

            // fix info
            for locs in inst.defines.values_mut() {
                for loc in locs {
                    debug_assert!(loc.line == i);
                    loc.line = cur_line_in_self;
                }
            }
            for locs in inst.uses.values_mut() {
                for loc in locs {
                    debug_assert!(loc.line == i);
                    loc.line = cur_line_in_self;
                }
            }
            // ignore preds/succs

            // add to self
            self.code.push(inst);
        }
    }

    fn append_code_sequence_all(&mut self, another: &Box<ASMCode>) {
        let n_insts = another.number_of_insts();
        self.append_code_sequence(another, 0, n_insts)
    }

    fn control_flow_analysis(&mut self) {
        const TRACE_CFA : bool = true;

        // control flow analysis
        let n_insts = self.number_of_insts();

        let ref blocks = self.blocks;
        let ref mut asm = self.code;

        for i in 0..n_insts {
            if TRACE_CFA {
                trace!("---inst {}---", i);
            }

            // skip symbol
            if asm[i].is_symbol {
                continue;
            }

            // determine predecessor

            // we check if it is a fallthrough block
            if i != 0 {
                let last_inst = ASMCode::find_prev_inst(i, asm);

                match last_inst {
                    Some(last_inst) => {
                        let last_inst_branch = asm[last_inst].branch.clone();
                        match last_inst_branch {
                            // if it is a fallthrough, we set its preds as last inst
                            ASMBranchTarget::None => {
                                if !asm[i].preds.contains(&last_inst) {
                                    asm[i].preds.push(last_inst);

                                    if TRACE_CFA {
                                        trace!("inst {}: set PREDS as previous inst - fallthrough {}", i, last_inst);
                                    }
                                }
                            }
                            // otherwise do nothing
                            _ => {}
                        }
                    }
                    None => {}
                }
            }

            // determine successor
            let branch = asm[i].branch.clone();
            match branch {
                ASMBranchTarget::Unconditional(ref target) => {
                    // branch to target
                    let target_n = self.blocks.get(target).unwrap().start_inst;

                    // cur inst's succ is target
                    asm[i].succs.push(target_n);

                    // target's pred is cur
                    asm[target_n].preds.push(i);

                    if TRACE_CFA {
                        trace!("inst {}: is a branch to {}", i, target);
                        trace!("inst {}: branch target index is {}", i, target_n);
                        trace!("inst {}: set SUCCS as branch target {}", i, target_n);
                        trace!("inst {}: set PREDS as branch source {}", target_n, i);
                    }
                },
                ASMBranchTarget::Conditional(ref target) => {
                    // branch to target
                    let target_n = self.blocks.get(target).unwrap().start_inst;

                    // cur insts' succ is target
                    asm[i].succs.push(target_n);

                    if TRACE_CFA {
                        trace!("inst {}: is a cond branch to {}", i, target);
                        trace!("inst {}: branch target index is {}", i, target_n);
                        trace!("inst {}: set SUCCS as branch target {}", i, target_n);
                    }

                    // target's pred is cur
                    asm[target_n].preds.push(i);
                    if TRACE_CFA {
                        trace!("inst {}: set PREDS as {}", target_n, i);
                    }

                    if let Some(next_inst) = ASMCode::find_next_inst(i, asm) {
                        // cur succ is next inst
                        asm[i].succs.push(next_inst);

                        // next inst's pred is cur
                        asm[next_inst].preds.push(i);

                        if TRACE_CFA {
                            trace!("inst {}: SET SUCCS as c-branch fallthrough target {}", i, next_inst);
                        }
                    } else {
                        panic!("conditional branch does not have a fallthrough target");
                    }
                },
                ASMBranchTarget::PotentiallyExcepting(ref target) => {
                    // may trigger exception and jump to target - similar as conditional branch
                    let target_n = self.blocks.get(target).unwrap().start_inst;

                    // cur inst's succ is target
                    asm[i].succs.push(target_n);

                    if TRACE_CFA {
                        trace!("inst {}: is potentially excepting to {}", i, target);
                        trace!("inst {}: excepting target index is {}", i, target_n);
                        trace!("inst {}: set SUCCS as excepting target {}", i, target_n);
                    }

                    asm[target_n].preds.push(i);

                    if let Some(next_inst) = ASMCode::find_next_inst(i, asm) {
                        // cur succ is next inst
                        asm[i].succs.push(next_inst);

                        // next inst's pred is cur
                        asm[next_inst].preds.push(i);

                        if TRACE_CFA {
                            trace!("inst {}: SET SUCCS as PEI fallthrough target {}", i, next_inst);
                        }
                    } else {
                        panic!("PEI does not have a fallthrough target");
                    }
                },
                ASMBranchTarget::Return => {
                    if TRACE_CFA {
                        trace!("inst {}: is a return", i);
                        trace!("inst {}: has no successor", i);
                    }
                }
                ASMBranchTarget::None => {
                    // not branch nor cond branch, succ is next inst
                    if TRACE_CFA {
                        trace!("inst {}: not a branch inst", i);
                    }
                    if let Some(next_inst) = ASMCode::find_next_inst(i, asm) {
                        if TRACE_CFA {
                            trace!("inst {}: set SUCCS as next inst {}", i, next_inst);
                        }
                        asm[i].succs.push(next_inst);
                    }
                }
                ASMBranchTarget::UnconditionalReg(id) => {
                    if TRACE_CFA {
                        trace!("inst {}: is an unconditional branch to reg {}", i, id);
                        trace!("inst {}: has no successor", i);
                    }
                }
            }
        }
    }

    fn find_prev_inst(i: usize, asm: &Vec<ASMInst>) -> Option<usize> {
        if i == 0 {
            None
        } else {
            let mut cur = i - 1;
            while cur != 0 {
                if !asm[cur].is_symbol {
                    return Some(cur);
                }

                if cur == 0 {
                    return None;
                } else {
                    cur -= 1;
                }
            }

            None
        }
    }

    fn find_next_inst(i: usize, asm: &Vec<ASMInst>) -> Option<usize> {
        if i >= asm.len() - 1 {
            None
        } else {
            let mut cur = i + 1;
            while cur < asm.len() {
                if !asm[cur].is_symbol {
                    return Some(cur);
                }

                cur += 1;
            }

            None
        }
    }

    fn find_last_inst(i: usize, asm: &Vec<ASMInst>) -> Option<usize> {
        if i == 0 {
            None
        } else {
            let mut cur = i;
            loop {
                if !asm[cur].is_symbol {
                    return Some(cur);
                }

                if cur == 0 {
                    return None;
                } else {
                    cur -= 1;
                }
            }
        }
    }

    fn add_frame_size_patchpoint(&mut self, patchpoint: ASMLocation) {
        self.frame_size_patchpoints.push(patchpoint);
    }
}

use std::any::Any;

impl MachineCode for ASMCode {
    fn as_any(&self) -> &Any {
        self
    }
    fn number_of_insts(&self) -> usize {
        self.code.len()
    }

    fn is_move(&self, index: usize) -> bool {
        let inst = self.code.get(index);
        match inst {
            Some(inst) => {
                let ref inst = inst.code;

                if inst.starts_with("MOV ") || inst.starts_with("FMOV ") {
                    // normal mov
                    true
                } else {
                    false
                }
            },
            None => false
        }
    }

    fn is_using_mem_op(&self, index: usize) -> bool {
        self.code[index].is_mem_op_used
    }

    fn is_jmp(&self, index: usize) -> Option<MuName> {
        let inst = self.code.get(index);
        match inst {
520
521
            Some(inst) if inst.code.starts_with("B.") || inst.code.starts_with("B ") => {
                // Destination is the first argument
522
523
524
                let split : Vec<&str> = inst.code.split(' ').collect();
                Some(ASMCodeGen::unmangle_block_label(self.name.clone(), String::from(split[1])))
            }
525
526
527
528
529
530
531
532
533
534
535
            Some(inst) if inst.code.starts_with("CBNZ ")  || inst.code.starts_with("CBZ ") => {
                // Destination is the second argument
                let split : Vec<&str> = inst.code.split(',').collect();
                Some(ASMCodeGen::unmangle_block_label(self.name.clone(), String::from(split[1])))
            }
            Some(inst) if inst.code.starts_with("TBNZ ")  || inst.code.starts_with("TBZ ") => {
                // Destination is the third argument
                let split : Vec<&str> = inst.code.split(',').collect();
                Some(ASMCodeGen::unmangle_block_label(self.name.clone(), String::from(split[2])))
            }

536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
            _ => None
        }
    }

    fn is_label(&self, index: usize) -> Option<MuName> {
        let inst = self.code.get(index);
        match inst {
            Some(inst) if inst.code.ends_with(':') => {
                let split : Vec<&str> = inst.code.split(':').collect();

                Some(ASMCodeGen::unmangle_block_label(self.name.clone(), String::from(split[0])))
            }
            _ => None
        }
    }

    fn is_spill_load(&self, index: usize) -> Option<P<Value>> {
        if let Some(inst) = self.code.get(index) {
            match inst.spill_info {
                Some(SpillMemInfo::Load(ref p)) => Some(p.clone()),
                _ => None
            }
        } else {
            None
        }
    }

    fn is_spill_store(&self, index: usize) -> Option<P<Value>> {
        if let Some(inst) = self.code.get(index) {
            match inst.spill_info {
                Some(SpillMemInfo::Store(ref p)) => Some(p.clone()),
                _ => None
            }
        } else {
            None
        }
    }

    fn get_succs(&self, index: usize) -> &Vec<usize> {
        &self.code[index].succs
    }

    fn get_preds(&self, index: usize) -> &Vec<usize> {
        &self.code[index].preds
    }

    fn get_inst_reg_uses(&self, index: usize) -> Vec<MuID> {
        self.code[index].uses.keys().map(|x| *x).collect()
    }

    fn get_inst_reg_defines(&self, index: usize) -> Vec<MuID> {
        self.code[index].defines.keys().map(|x| *x).collect()
    }

    fn replace_reg(&mut self, from: MuID, to: MuID) {
        for loc in self.get_define_locations(from) {
            let ref mut inst_to_patch = self.code[loc.line];

            // pick the right reg based on length
            let to_reg = get_alias_for_length(to, loc.oplen);
            let to_reg_string = to_reg.name().unwrap();

            string_utils::replace(&mut inst_to_patch.code, loc.index, &to_reg_string, to_reg_string.len());
        }

        for loc in self.get_use_locations(from) {
            let ref mut inst_to_patch = self.code[loc.line];

            // pick the right reg based on length
            let to_reg = get_alias_for_length(to, loc.oplen);
            let to_reg_string = to_reg.name().unwrap();

            string_utils::replace(&mut inst_to_patch.code, loc.index, &to_reg_string, to_reg_string.len());
        }
    }

    fn replace_define_tmp_for_inst(&mut self, from: MuID, to: MuID, inst: usize) {
        let to_reg_string : MuName = REG_PLACEHOLDER.clone();

        let asm = &mut self.code[inst];
        // if this reg is defined, replace the define
        if asm.defines.contains_key(&from) {
            let define_locs = asm.defines.get(&from).unwrap().to_vec();
            // replace temps
            for loc in define_locs.iter() {
                string_utils::replace(&mut asm.code, loc.index, &to_reg_string, to_reg_string.len());
            }

            // remove old key, insert new one
            asm.defines.remove(&from);
            asm.defines.insert(to, define_locs);
        }
    }

    fn replace_use_tmp_for_inst(&mut self, from: MuID, to: MuID, inst: usize) {
        let to_reg_string : MuName = REG_PLACEHOLDER.clone();

        let asm = &mut self.code[inst];

        // if this reg is used, replace the use
        if asm.uses.contains_key(&from) {
            let use_locs = asm.uses.get(&from).unwrap().to_vec();
            // replace temps
            for loc in use_locs.iter() {
                string_utils::replace(&mut asm.code, loc.index, &to_reg_string, to_reg_string.len());
            }

            // remove old key, insert new one
            asm.uses.remove(&from);
            asm.uses.insert(to, use_locs);
        }
    }

    fn set_inst_nop(&mut self, index: usize) {
        self.code[index].code.clear();
651
652
        //        self.code.remove(index);
        //        self.code.insert(index, ASMInst::nop());
653
654
    }

655
    fn remove_unnecessary_callee_saved(&mut self, used_callee_saved: Vec<MuID>) -> HashSet<MuID> {
656
        // every push pair (STP)/and pop pair (LDP) will use/define SP
657
        let fp = FP.extract_ssa_id().unwrap();
658

659
660
        // Note: this version assumes only 1 callee is pushed or poped
        let find_op_other_than_fp = |inst: &ASMInst| -> MuID {
661
            for id in inst.defines.keys() {
662
663
                if *id != fp {
                    return *id;
664
665
666
                }
            }
            for id in inst.uses.keys() {
667
668
                if *id != fp {
                    return *id;
669
670
671
                }
            }

672
            panic!("Expected to find a used register other than the FP");
673
674
675
        };

        let mut inst_to_remove = vec![];
676
        let mut regs_to_remove = HashSet::new();
677
678
679
680

        for i in 0..self.number_of_insts() {
            let ref inst = self.code[i];

681
682
683
684
685
686
            match inst.spill_info {
                Some(SpillMemInfo::CalleeSaved) => {
                    let reg = find_op_other_than_fp(inst);
                    if !used_callee_saved.contains(&reg) {
                        inst_to_remove.push(i);
                        regs_to_remove.insert(reg);
687
688
                    }
                }
689
                _ => {}
690
691
692
693
694
695
            }
        }

        for i in inst_to_remove {
            self.set_inst_nop(i);
        }
696
        regs_to_remove
697
698
    }

699
    fn patch_frame_size(&mut self, size: usize) {
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
        debug_assert!(size % 16 == 0);

        let size = size.to_string();

        debug_assert!(size.len() <= FRAME_SIZE_PLACEHOLDER_LEN);

        for loc in self.frame_size_patchpoints.iter() {
            let ref mut inst = self.code[loc.line];

            string_utils::replace(&mut inst.code, loc.index, &size, size.len());
        }
    }

    fn emit(&self) -> Vec<u8> {
        let mut ret = vec![];

        for inst in self.code.iter() {
            if !inst.is_symbol {
                ret.append(&mut "\t".to_string().into_bytes());
            }

            ret.append(&mut inst.code.clone().into_bytes());
            ret.append(&mut "\n".to_string().into_bytes());
        }

        ret
    }

    fn emit_inst(&self, index: usize) -> Vec<u8> {
        let mut ret = vec![];

        let ref inst = self.code[index];

        if !inst.is_symbol {
            ret.append(&mut "\t".to_string().into_bytes());
        }

        ret.append(&mut inst.code.clone().into_bytes());

        ret
    }

    fn trace_mc(&self) {
        trace!("");

        trace!("code for {}: \n", self.name);

        let n_insts = self.code.len();
        for i in 0..n_insts {
            self.trace_inst(i);
        }

        trace!("")
    }

    fn trace_inst(&self, i: usize) {
        trace!("#{}\t{:30}\t\tdefine: {:?}\tuses: {:?}\tpred: {:?}\tsucc: {:?}",
757
758
        i, self.code[i].code, self.get_inst_reg_defines(i), self.get_inst_reg_uses(i),
        self.code[i].preds, self.code[i].succs);
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
    }

    fn get_ir_block_livein(&self, block: &str) -> Option<&Vec<MuID>> {
        match self.blocks.get(block) {
            Some(ref block) => Some(&block.livein),
            None => None
        }
    }

    fn get_ir_block_liveout(&self, block: &str) -> Option<&Vec<MuID>> {
        match self.blocks.get(block) {
            Some(ref block) => Some(&block.liveout),
            None => None
        }
    }

    fn set_ir_block_livein(&mut self, block: &str, set: Vec<MuID>) {
        let block = self.blocks.get_mut(block).unwrap();
        block.livein = set;
    }

    fn set_ir_block_liveout(&mut self, block: &str, set: Vec<MuID>) {
        let block = self.blocks.get_mut(block).unwrap();
        block.liveout = set;
    }

785
    fn get_all_blocks(&self) -> Vec<MuName> { self.blocks.keys().map(|x| x.clone()).collect() }
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829

    fn get_entry_block(&self) -> MuName {
        self.entry.clone()
    }

    fn get_block_range(&self, block: &str) -> Option<ops::Range<usize>> {
        match self.blocks.get(block) {
            Some(ref block) => Some(block.start_inst..block.end_inst),
            None => None
        }
    }

    fn get_block_for_inst(&self, index: usize) -> Option<MuName> {
        for (name, block) in self.blocks.iter() {
            if index >= block.start_inst && index < block.end_inst {
                return Some(name.clone());
            }
        }

        None
    }

    fn get_next_inst(&self, index: usize) -> Option<usize> {
        ASMCode::find_next_inst(index, &self.code)
    }

    fn get_last_inst(&self, index: usize) -> Option<usize> {
        ASMCode::find_last_inst(index, &self.code)
    }
}

#[derive(Clone, Debug)]
enum ASMBranchTarget {
    None,
    Conditional(MuName),
    Unconditional(MuName),
    PotentiallyExcepting(MuName),
    Return,
    UnconditionalReg(MuID)
}

#[derive(Clone, Debug)]
enum SpillMemInfo {
    Load(P<Value>),
830
831
    Store(P<Value>),
    CalleeSaved, // Callee saved record
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
}

#[derive(Clone, Debug)]
struct ASMInst {
    code: String,

    defines: LinkedHashMap<MuID, Vec<ASMLocation>>,
    uses: LinkedHashMap<MuID, Vec<ASMLocation>>,

    is_mem_op_used: bool,
    is_symbol: bool,

    preds: Vec<usize>,
    succs: Vec<usize>,
    branch: ASMBranchTarget,

    spill_info: Option<SpillMemInfo>
}

impl ASMInst {
    fn symbolic(line: String) -> ASMInst {
        ASMInst {
            code: line,
            defines: LinkedHashMap::new(),
            uses: LinkedHashMap::new(),
            is_mem_op_used: false,
            is_symbol: true,
            preds: vec![],
            succs: vec![],
            branch: ASMBranchTarget::None,

            spill_info: None
        }
    }

    fn inst(
        inst: String,
        defines: LinkedHashMap<MuID, Vec<ASMLocation>>,
        uses: LinkedHashMap<MuID, Vec<ASMLocation>>,
        is_mem_op_used: bool,
        target: ASMBranchTarget,
        spill_info: Option<SpillMemInfo>
    ) -> ASMInst
    {
        ASMInst {
            code: inst,
            defines: defines,
            uses: uses,
            is_symbol: false,
            is_mem_op_used: is_mem_op_used,
            preds: vec![],
            succs: vec![],
            branch: target,

            spill_info: spill_info
        }
    }

    fn nop() -> ASMInst {
        ASMInst {
            code: "".to_string(),
            defines: LinkedHashMap::new(),
            uses: LinkedHashMap::new(),
            is_symbol: false,
            is_mem_op_used: false,
            preds: vec![],
            succs: vec![],
            branch: ASMBranchTarget::None,

            spill_info: None
        }
    }
}

#[derive(Clone, Debug, PartialEq, Eq)]
struct ASMLocation {
    line: usize,
    index: usize,
    len: usize,
    oplen: usize,
}

impl ASMLocation {
    fn new(line: usize, index: usize, len: usize, oplen: usize) -> ASMLocation {
        ASMLocation{
            line: line,
            index: index,
            len: len,
            oplen: oplen
        }
    }
}

#[derive(Clone, Debug)]
/// [start_inst, end_inst)
struct ASMBlock {
    start_inst: usize,
    end_inst: usize,

    livein: Vec<MuID>,
    liveout: Vec<MuID>
}

impl ASMBlock {
    fn new() -> ASMBlock {
        ASMBlock {
            start_inst: usize::MAX,
            end_inst: usize::MAX,
            livein: vec![],
            liveout: vec![]
        }
    }
}

pub struct ASMCodeGen {
    cur: Option<Box<ASMCode>>
}

const REG_PLACEHOLDER_LEN : usize = 5;
lazy_static! {
    pub static ref REG_PLACEHOLDER : String = {
        let blank_spaces = [' ' as u8; REG_PLACEHOLDER_LEN];

        format!("{}", str::from_utf8(&blank_spaces).unwrap())
    };
}

const FRAME_SIZE_PLACEHOLDER_LEN : usize = 10; // a frame is smaller than 1 << 10
lazy_static! {
    pub static ref FRAME_SIZE_PLACEHOLDER : String = {
        let blank_spaces = [' ' as u8; FRAME_SIZE_PLACEHOLDER_LEN];
        format!("{}", str::from_utf8(&blank_spaces).unwrap())
    };
}

impl ASMCodeGen {
    pub fn new() -> ASMCodeGen {
        ASMCodeGen {
            cur: None
        }
    }

    fn cur(&self) -> &ASMCode {
        self.cur.as_ref().unwrap()
    }

    fn cur_mut(&mut self) -> &mut ASMCode {
        self.cur.as_mut().unwrap()
    }

    fn line(&self) -> usize {
        self.cur().code.len()
    }

    fn add_asm_label(&mut self, code: String) {
        trace!("emit: {}", code);
        self.cur_mut().code.push(ASMInst::symbolic(code));
    }

    fn add_asm_block_label(&mut self, code: String, block_name: MuName) {
        trace!("emit: [{}]{}", block_name, code);
        self.cur_mut().code.push(ASMInst::symbolic(code));
    }

996
    fn add_asm_symbolic(&mut self, code: String) {
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
        trace!("emit: {}", code);
        self.cur_mut().code.push(ASMInst::symbolic(code));
    }

    fn prepare_machine_regs(&self, regs: Iter<P<Value>>) -> Vec<MuID> {
        regs.map(|x| self.prepare_machine_reg(x)).collect()
    }

    fn add_asm_call(&mut self, code: String, potentially_excepting: Option<MuName>, target: Option<(MuID, ASMLocation)>) {
        // a call instruction will use all the argument registers
        // do not need
1008
        let mut uses: LinkedHashMap<MuID, Vec<ASMLocation>> = LinkedHashMap::new();
1009
1010
1011
1012
        if target.is_some() {
            let (id, loc) = target.unwrap();
            uses.insert(id, vec![loc]);
        }
1013
1014
1015
1016
1017
1018
        //        for reg in ARGUMENT_GPRs.iter() {
        //            uses.insert(reg.id(), vec![]);
        //        }
        //        for reg in ARGUMENT_FPRs.iter() {
        //            uses.insert(reg.id(), vec![]);
        //        }
1019
1020

        // defines: return registers
1021
        let mut defines: LinkedHashMap<MuID, Vec<ASMLocation>> = LinkedHashMap::new();
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
        for reg in RETURN_GPRs.iter() {
            defines.insert(reg.id(), vec![]);
        }
        for reg in RETURN_FPRs.iter() {
            defines.insert(reg.id(), vec![]);
        }
        for reg in CALLER_SAVED_GPRs.iter() {
            if !defines.contains_key(&reg.id()) {
                defines.insert(reg.id(), vec![]);
            }
        }
        for reg in CALLER_SAVED_FPRs.iter() {
            if !defines.contains_key(&reg.id()) {
                defines.insert(reg.id(), vec![]);
            }
        }

        self.add_asm_inst_internal(code, defines, uses, false, {
            if potentially_excepting.is_some() {
                ASMBranchTarget::PotentiallyExcepting(potentially_excepting.unwrap())
            } else {
                ASMBranchTarget::None
            }
        }, None)
    }

    fn add_asm_ret(&mut self, code: String) {
        // return instruction does not use anything (not RETURN REGS)
        // otherwise it will keep RETURN REGS alive
        // and if there is no actual move into RETURN REGS, it will keep RETURN REGS for alive for very long
        // and prevents anything using those regsiters
1053
        self.add_asm_inst_internal(code, linked_hashmap! {}, linked_hashmap! {}, false, ASMBranchTarget::Return, None);
1054
1055
1056
    }

    fn add_asm_branch(&mut self, code: String, target: MuName) {
1057
        self.add_asm_inst_internal(code, linked_hashmap! {}, linked_hashmap! {}, false, ASMBranchTarget::Unconditional(target), None);
1058
1059
1060
    }

    fn add_asm_branch2(&mut self, code: String, target: MuName) {
1061
        self.add_asm_inst_internal(code, linked_hashmap! {}, linked_hashmap! {}, false, ASMBranchTarget::Conditional(target), None);
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
    }

    fn add_asm_inst(
        &mut self,
        code: String,
        defines: LinkedHashMap<MuID, Vec<ASMLocation>>,
        uses: LinkedHashMap<MuID, Vec<ASMLocation>>,
        is_using_mem_op: bool
    ) {
        self.add_asm_inst_internal(code, defines, uses, is_using_mem_op, ASMBranchTarget::None, None)
    }

1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
    fn add_asm_inst_with_callee_saved(
        &mut self,
        code: String,
        defines: LinkedHashMap<MuID, Vec<ASMLocation>>,
        uses: LinkedHashMap<MuID, Vec<ASMLocation>>,
        is_using_mem_op: bool,
    ) {
        self.add_asm_inst_internal(code, defines, uses, is_using_mem_op, ASMBranchTarget::None, Some(SpillMemInfo::CalleeSaved))
    }

1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
    fn add_asm_inst_with_spill(
        &mut self,
        code: String,
        defines: LinkedHashMap<MuID, Vec<ASMLocation>>,
        uses: LinkedHashMap<MuID, Vec<ASMLocation>>,
        is_using_mem_op: bool,
        spill_info: SpillMemInfo
    ) {
        self.add_asm_inst_internal(code, defines, uses, is_using_mem_op, ASMBranchTarget::None, Some(spill_info))
    }

    fn add_asm_inst_internal(
        &mut self,
        code: String,
        defines: LinkedHashMap<MuID, Vec<ASMLocation>>,
        uses: LinkedHashMap<MuID, Vec<ASMLocation>>,
        is_using_mem_op: bool,
        target: ASMBranchTarget,
        spill_info: Option<SpillMemInfo>)
    {
        let line = self.line();
        trace!("asm: {}", code);
        trace!("     defines: {:?}", defines);
        trace!("     uses: {:?}", uses);
        let mc = self.cur_mut();

        // put the instruction
        mc.code.push(ASMInst::inst(code, defines, uses, is_using_mem_op, target, spill_info));
    }

    fn prepare_reg(&self, op: &P<Value>, loc: usize) -> (String, MuID, ASMLocation) {
        if cfg!(debug_assertions) {
            match op.v {
                Value_::SSAVar(_) => {},
                _ => panic!("expecting register op")
            }
        }

        let str = self.asm_reg_op(op);
        let len = str.len();
        (str, op.extract_ssa_id().unwrap(), ASMLocation::new(self.line(), loc, len, check_op_len(&op.ty)))
    }

    fn prepare_fpreg(&self, op: &P<Value>, loc: usize) -> (String, MuID, ASMLocation) {
        if cfg!(debug_assertions) {
            match op.v {
                Value_::SSAVar(_) => {},
                _ => panic!("expecting register op")
            }
        }

        let str = self.asm_reg_op(op);
        let len = str.len();
        (str, op.extract_ssa_id().unwrap(), ASMLocation::new(self.line(), loc, len, 64))
    }

    fn prepare_machine_reg(&self, op: &P<Value>) -> MuID {
        if cfg!(debug_assertions) {
            match op.v {
                Value_::SSAVar(_) => {},
                _ => panic!("expecting machine register op")
            }
        }

        op.extract_ssa_id().unwrap()
    }

Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1151
    fn prepare_mem(&self, op: &P<Value>, loc: usize) -> (String, LinkedHashMap<MuID, Vec<ASMLocation>>) {
1152
1153
1154
1155
1156
1157
1158
        if cfg!(debug_assertions) {
            match op.v {
                Value_::Memory(_) => {},
                _ => panic!("expecting memory op")
            }
        }

1159
1160
1161
        let mut ids: Vec<MuID> = vec![];
        let mut locs: Vec<ASMLocation> = vec![];
        let mut result_str: String = "".to_string();
1162

1163
        let mut loc_cursor: usize = loc;
1164
1165
        match op.v {
            // offset(base,index,scale)
1166
            Value_::Memory(MemoryLocation::Address { ref base, ref offset, shift, signed }) => {
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
                result_str.push('[');
                loc_cursor += 1;
                // deal with base, base is ssa
                let (str, id, loc) = self.prepare_reg(base, loc_cursor);
                result_str.push_str(&str);
                ids.push(id);
                locs.push(loc);
                loc_cursor += str.len();

                // deal with offset
                if offset.is_some() {
                    result_str.push(',');
                    loc_cursor += 1;

                    let offset = offset.as_ref().unwrap();
                    match offset.v {
                        Value_::SSAVar(_) => {
                            // temp as offset
                            let (str, id, loc) = self.prepare_reg(offset, loc_cursor);

                            result_str.push_str(&str);
                            ids.push(id);
                            locs.push(loc);

                            result_str.push_str(",");
                            let n = offset.ty.get_int_length().unwrap();
                            let shift_type =
1194
                                if n == 64 { if signed { "SXTX" } else { "LSL" } } else if n == 32 { if signed { "SXTW" } else { "UXTW" } } else { panic!("Unexpected size for offset register") };
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206

                            result_str.push_str(&shift_type);
                            result_str.push_str(" #");
                            let shift_str = shift.to_string();
                            result_str.push_str(&shift_str);
                        },
                        Value_::Constant(Constant::Int(val)) => {
                            let str = (val as i32).to_string();

                            result_str.push('#');
                            result_str.push_str(&str);
                        },
1207
1208
1209
1210
                        Value_::Constant(Constant::ExternSym(ref name)) => {
                            result_str.push('#');
                            result_str.push_str(name.as_str());
                        }
1211
1212
1213
1214
1215
                        _ => panic!("unexpected offset type: {:?}", offset)
                    }
                }

                // scale (for LSL type)
1216
                if shift != 0 {}
1217
1218
1219
1220

                result_str.push(']');
            },

1221
            Value_::Memory(MemoryLocation::Symbolic { ref label, is_global }) => {
1222
                let label =
1223
1224
                    if is_global { format!(":got:{}", label.clone()) }
                        else { label.clone() };
1225
1226
                result_str.push_str(label.as_str());
            },
1227
1228
1229
1230

            Value_::Memory(MemoryLocation::VirtualAddress {..}) => {
                panic!("Can't directly use a virtual adress (try calling emit_mem first)");
            }
1231
1232
1233
            _ => panic!("expect mem location as value")
        }

1234
1235
        let uses: LinkedHashMap<MuID, Vec<ASMLocation>> = {
            let mut map: LinkedHashMap<MuID, Vec<ASMLocation>> = linked_hashmap! {};
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
            for i in 0..ids.len() {
                let id = ids[i];
                let loc = locs[i].clone();

                if map.contains_key(&id) {
                    map.get_mut(&id).unwrap().push(loc);
                } else {
                    map.insert(id, vec![loc]);
                }
            }
            map
        };


        (result_str, uses)
    }

    fn asm_reg_op(&self, op: &P<Value>) -> String {
        let id = op.extract_ssa_id().unwrap();
        if id < MACHINE_ID_END {
            // machine reg
            format!("{}", op.name().unwrap())
        } else {
            // virtual register, use place holder
            REG_PLACEHOLDER.clone()
        }
    }

    fn mangle_block_label(&self, label: MuName) -> String {
        format!("{}_{}", self.cur().name, label)
    }

    fn unmangle_block_label(fn_name: MuName, label: String) -> MuName {
        // input: _fn_name_BLOCK_NAME
        // return BLOCK_NAME
1271
1272
1273
1274
1275
1276
1277
        let split: Vec<&str> = label.splitn(2, &(fn_name.clone() + "_")).collect();
        // TODO: Why was this if statetment unnecesary on x86 (perhaps block names are wrong)
        if split.len() == 0 {
            trace!("unmangle_block_label: fn_name '{}', label '{}', split ", fn_name, label);
        } else if split.len() == 1 {
            trace!("unmangle_block_label: fn_name '{}', label '{}', split '{}'", fn_name, label, split[0]);
        };
1278
1279
1280
1281
1282
1283
1284
        String::from(split[1])
    }

    fn finish_code_sequence_asm(&mut self) -> Box<ASMCode> {
        self.cur.take().unwrap()
    }

Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1285
    fn internal_simple(&mut self, inst: &str) {
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
        let inst = inst.to_string();
        trace!("emit: \t{}", inst);

        let asm = inst;

        self.add_asm_inst(
            asm,
            linked_hashmap! {},
            linked_hashmap! {},
            false
        )
    }

Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1299
    fn internal_simple_imm(&mut self, inst: &str, val: u64) {
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
        let inst = inst.to_string();
        trace!("emit: \t{} {}", inst, val);

        let asm = format!("{} #{}", inst, val);

        self.add_asm_inst(
            asm,
            linked_hashmap! {},
            linked_hashmap! {},
            false
        )
    }

Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1313
    fn internal_simple_str(&mut self, inst: &str, option: &str) {
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
        let inst = inst.to_string();
        let option = option.to_string();
        trace!("emit: \t{} {}", inst, option);

        let asm = format!("{} {}", inst, option);

        self.add_asm_inst(
            asm,
            linked_hashmap! {},
            linked_hashmap! {},
            false
        )
    }

1328
    // A system instruction
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1329
    fn internal_system(&mut self, inst: &str, option: &str, src: &P<Value>) {
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
        let inst = inst.to_string();
        let option = option.to_string();
        trace!("emit: \t{} {} {}", inst, option, src);

        let (reg1, id1, loc1) = self.prepare_reg(src, inst.len() + 1 + option.len() + 1);

        let asm = format!("{} {},{}", inst, option, reg1);

        self.add_asm_inst(
            asm,
1340
            linked_hashmap! {},
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1341
            ignore_zero_register(id1, vec![loc1]),
1342
1343
1344
1345
            false
        )
    }

Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1346
    fn internal_branch_op(&mut self, inst: &str, src: &P<Value>, dest_name: MuName) {
1347
1348
1349
1350
        trace!("emit: \t{} {}, {}", inst, src, dest_name);

        let (reg1, id1, loc1) = self.prepare_reg(src, inst.len() + 1);
        // symbolic label, we dont need to patch it
1351
1352
        let asm = format!("{} {},{}", inst, reg1, self.mangle_block_label(dest_name.clone()));
        self.add_asm_inst_internal(asm, linked_hashmap! {}, linked_hashmap! { id1 => vec![loc1]}, false, ASMBranchTarget::Conditional(dest_name), None);
1353
1354
    }

Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1355
    fn internal_branch_op_imm(&mut self, inst: &str, src1: &P<Value>, src2: u8, dest_name: MuName) {
1356
1357
1358
1359
        trace!("emit: \t{} {},{},{}", inst, src1, src2, dest_name);

        let (reg1, id1, loc1) = self.prepare_reg(src1, inst.len() + 1);
        // symbolic label, we dont need to patch it
1360
1361
        let asm = format!("{} {},#{},{}", inst, reg1, src2, self.mangle_block_label(dest_name.clone()));
        self.add_asm_inst_internal(asm, linked_hashmap! {}, linked_hashmap! { id1 => vec![loc1]}, false, ASMBranchTarget::Conditional(dest_name), None);
1362
1363
    }

1364
1365
    // Same as inetnral_binop except extends the second source register
    fn internal_binop_ext(&mut self, inst: &str, dest: &P<Value>, src1: &P<Value>, src2: &P<Value>, signed: bool, shift: u8) {
1366
1367
1368
        let inst = inst.to_string();
        let ext_s = if signed { "S" } else { "U" };
        let ext_p = match src2.ty.get_int_length() {
1369
            Some(8) => "B",
1370
1371
1372
            Some(16) => "H",
            Some(32) => "W",
            Some(64) => "X",
1373
            _ => panic!("op size: {} dose not support extension", src2.ty.get_int_length().unwrap())
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
        };
        let ext = ext_s.to_string() + "XT" + ext_p;

        trace!("emit: \t{} {}, {} {} {} -> {}", inst, src1, src2, ext, shift, dest);


        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src1, inst.len() + 1 + reg1.len() + 1);
        let (reg3, id3, loc3) = self.prepare_reg(src2, inst.len() + 1 + reg1.len() + 1 + reg2.len() + 1);

        let asm =
1385
            if shift == 0 { format!("{} {},{},{},{}", inst, reg1, reg2, reg3, ext) } else { format!("{} {},{},{},{} #{}", inst, reg1, reg2, reg3, ext, shift) };
1386
1387
1388
1389


        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1390
1391
            ignore_zero_register(id1, vec![loc1]),
            create_hash_map(vec![(id2, loc2), (id3, loc3)]),
1392
1393
1394
1395
            false
        )
    }

Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1396
    fn internal_binop_imm(&mut self, inst: &str, dest: &P<Value>, src1: &P<Value>, src2: u64, shift: u8) {
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
        let inst = inst.to_string();
        trace!("emit: \t{} {}, {} LSL {} -> {}", inst, src1, src2, shift, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src1, inst.len() + 1 + reg1.len() + 1);

        let asm = if shift == 0 {
            format!("{} {},{},#{}", inst, reg1, reg2, src2)
        } else {
            format!("{} {},{},#{},LSL #{}", inst, reg1, reg2, src2, shift)
        };

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1411
1412
            ignore_zero_register(id1, vec![loc1]),
            ignore_zero_register(id2, vec![loc2]),
1413
1414
1415
1416
            false
        )
    }

1417
    // dest <= inst(src1, src2)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1418
    fn internal_unop_shift(&mut self, inst: &str, dest: &P<Value>, src: &P<Value>, shift: &str, amount: u8) {
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
        let inst = inst.to_string();
        trace!("emit: \t{} {}, {} {} -> {}", inst, src, shift, amount, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src, inst.len() + 1 + reg1.len() + 1);

        let asm = format!("{} {},{},{} #{}", inst, reg1, reg2, shift, amount);

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1429
1430
            ignore_zero_register(id1, vec![loc1]),
            ignore_zero_register(id2, vec![loc2]),
1431
1432
1433
1434
            false
        )
    }

1435
    // dest <= inst(src)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1436
    fn internal_unop(&mut self, inst: &str, dest: &P<Value>, src: &P<Value>) {
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
        let inst = inst.to_string();
        trace!("emit: \t{} {} -> {}", inst, src, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src, inst.len() + 1 + reg1.len() + 1);

        let asm = format!("{} {},{}", inst, reg1, reg2);

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1447
1448
            ignore_zero_register(id1, vec![loc1]),
            ignore_zero_register(id2, vec![loc2]),
1449
1450
1451
1452
1453
            false
        )
    }

    // Note: different instructions have different allowed src values
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1454
    fn internal_unop_imm(&mut self, inst: &str, dest: &P<Value>, src: u64, shift: u8) {
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
        debug_assert!(shift == 0 || shift == 16 || shift == 32 || shift == 48);
        let inst = inst.to_string();
        trace!("emit: \t{} {} LSL {} -> {}", inst, src, shift, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let asm = if shift == 0 {
            format!("{} {},#{}", inst, reg1, src)
        } else {
            format!("{} {},#{},LSL #{}", inst, reg1, src, shift)
        };

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1468
            ignore_zero_register(id1, vec![loc1]),
1469
            linked_hashmap! {},
1470
1471
1472
1473
1474
            false
        )
    }


1475
    // dest <= inst(src1, src2)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1476
    fn internal_binop(&mut self, inst: &str, dest: &P<Value>, src1: &P<Value>, src2: &P<Value>) {
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
        let inst = inst.to_string();
        trace!("emit: \t{} {}, {} -> {}", inst, src1, src2, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src1, inst.len() + 1 + reg1.len() + 1);
        let (reg3, id3, loc3) = self.prepare_reg(src2, inst.len() + 1 + reg1.len() + 1 + reg2.len() + 1);

        let asm = format!("{} {},{},{}", inst, reg1, reg2, reg3);

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1488
1489
            ignore_zero_register(id1, vec![loc1]),
            create_hash_map(vec![(id2, loc2), (id3, loc3)]),
1490
1491
1492
1493
            false
        )
    }

1494
    // dest <= inst(src1, src2)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1495
    fn internal_binop_shift(&mut self, inst: &str, dest: &P<Value>, src1: &P<Value>, src2: &P<Value>, shift: &str, amount: u8) {
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
        let inst = inst.to_string();
        trace!("emit: \t{} {}, {}, {} {} -> {}", inst, src1, src2, shift, amount, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src1, inst.len() + 1 + reg1.len() + 1);
        let (reg3, id3, loc3) = self.prepare_reg(src2, inst.len() + 1 + reg1.len() + 1 + reg2.len() + 1);

        let asm = format!("{} {},{},{},{} #{}", inst, reg1, reg2, reg3, shift, amount);

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1507
1508
            ignore_zero_register(id1, vec![loc1]),
            create_hash_map(vec![(id2, loc2), (id3, loc3)]),
1509
1510
1511
1512
            false
        )
    }

1513
1514
    // dest <= inst(src1, src2, src3)
    fn internal_ternop(&mut self, inst: &str, dest: &P<Value>, src1: &P<Value>, src2: &P<Value>, src3: &P<Value>) {
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
        let inst = inst.to_string();
        trace!("emit: \t{} {}, {}, {} -> {}", inst, src3, src1, src2, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src1, inst.len() + 1 + reg1.len() + 1);
        let (reg3, id3, loc3) = self.prepare_reg(src2, inst.len() + 1 + reg1.len() + 1 + reg2.len() + 1);
        let (reg4, id4, loc4) = self.prepare_reg(src3, inst.len() + 1 + reg1.len() + 1 + reg2.len() + 1 + reg3.len() + 1);

        let asm = format!("{} {},{},{},{}", inst, reg1, reg2, reg3, reg4);

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1527
1528
            ignore_zero_register(id1, vec![loc1]),
            create_hash_map(vec![(id2, loc2), (id3, loc3), (id4, loc4)]),
1529
1530
1531
1532
            false
        )
    }

Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1533
    fn internal_ternop_imm(&mut self, inst: &str, dest: &P<Value>, src1: &P<Value>, src2: u64, src3: u64) {
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
        let inst = inst.to_string();
        trace!("emit: \t{} {}, {}, {} -> {}", inst, src1, src2, src3, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src1, inst.len() + 1 + reg1.len() + 1);

        let asm = format!("{} {},{},#{},#{}", inst, reg1, reg2, src2, src3);

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1544
1545
            ignore_zero_register(id1, vec![loc1]),
            ignore_zero_register(id2, vec![loc2]),
1546
1547
1548
1549
            false
        )
    }

1550
    // PSTATE.<NZCV> = inst(src1, src2)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1551
    fn internal_cmpop(&mut self, inst: &str, src1: &P<Value>, src2: &P<Value>)
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
    {
        let inst = inst.to_string();
        trace!("emit: \t{} {}, {}", inst, src1, src2);

        let (reg1, id1, loc1) = self.prepare_reg(src1, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src2, inst.len() + 1 + reg1.len() + 1);

        let asm = format!("{} {},{}", inst, reg1, reg2);

        self.add_asm_inst(
            asm,
1563
            linked_hashmap! {},
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1564
            create_hash_map(vec![(id1, loc1), (id2, loc2)]),
1565
1566
1567
1568
            false
        )
    }

1569
    // dest <= inst(src1, src2)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1570
    fn internal_cmpop_shift(&mut self, inst: &str, src1: &P<Value>, src2: &P<Value>, shift: &str, amount: u8) {
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
        let inst = inst.to_string();
        trace!("emit: \t{} {},{}, {} {}", inst, src1, src2, shift, amount);

        let (reg1, id1, loc1) = self.prepare_reg(src1, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src2, inst.len() + 1 + reg1.len() + 1);

        let asm = format!("{} {},{},{} #{}", inst, reg1, reg2, shift, amount);

        self.add_asm_inst(
            asm,
1581
            linked_hashmap! {},
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1582
            create_hash_map(vec![(id1, loc1), (id2, loc2)]),
1583
1584
1585
1586
            false
        )
    }

1587
1588
    // Same as inetnral_binop except extends the second source register
    fn internal_cmpop_ext(&mut self, inst: &str, src1: &P<Value>, src2: &P<Value>, signed: bool, shift: u8) {
1589
1590
1591
        let inst = inst.to_string();
        let ext_s = if signed { "S" } else { "U" };
        let ext_p = match src2.ty.get_int_length() {
1592
            Some(8) => "B",
1593
1594
1595
            Some(16) => "H",
            Some(32) => "W",
            Some(64) => "X",
1596
            _ => panic!("op size: {} dose not support extension", src2.ty.get_int_length().unwrap())
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
        };
        let ext = ext_s.to_string() + "XT" + ext_p;

        trace!("emit: \t{} {}, {} {} {}", inst, src1, src2, ext, shift);


        let (reg1, id1, loc1) = self.prepare_reg(src1, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src2, inst.len() + 1 + reg1.len() + 1);

        let asm = format!("{} {},{},{} #{}", inst, reg1, reg2, ext, shift);

        self.add_asm_inst(
            asm,
1610
            linked_hashmap! {},
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1611
            create_hash_map(vec![(id1, loc1), (id2, loc2)]),
1612
1613
1614
            false
        )
    }
1615
    // PSTATE.<NZCV> = inst(src1, src2 [<< 12])
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1616
    fn internal_cmpop_imm(&mut self, inst: &str, src1: &P<Value>, src2: u64, shift: u8)
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
    {
        let inst = inst.to_string();
        trace!("emit: \t{} {}, {} LSL {}", inst, src1, src2, shift);

        let (reg1, id1, loc1) = self.prepare_reg(src1, inst.len() + 1);

        let asm = if shift == 0 {
            format!("{} {},#{}", inst, reg1, src2)
        } else {
            format!("{} {},#{},LSL #{}", inst, reg1, src2, shift)
        };

        self.add_asm_inst(
            asm,
1631
            linked_hashmap! { },
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1632
            ignore_zero_register(id1, vec![loc1]),
1633
1634
1635
1636
            false
        )
    }

1637
    // PSTATE.<NZCV> = inst(src1, 0.0)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1638
    fn internal_cmpop_f0(&mut self, inst: &str, src1: &P<Value>)
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
    {
        let inst = inst.to_string();
        trace!("emit: \t{} {}, 0.0", inst, src1);

        let (reg1, id1, loc1) = self.prepare_reg(src1, inst.len() + 1);

        let asm = format!("{} {},#0.0", inst, reg1);

        self.add_asm_inst(
            asm,
1649
            linked_hashmap! { },
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1650
            ignore_zero_register(id1, vec![loc1]),
1651
1652
1653
1654
            false
        )
    }

1655
    // dest <= inst<cond>()
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1656
    fn internal_cond_op(&mut self, inst: &str, dest: &P<Value>, cond: &str) {
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
        let inst = inst.to_string();
        let cond = cond.to_string();
        trace!("emit: \t{} {} -> {}", inst, cond, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);

        let asm = format!("{} {},{}", inst, reg1, cond);

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1667
            ignore_zero_register(id1, vec![loc1]),
1668
            linked_hashmap! {},
1669
1670
1671
1672
            false
        )
    }

1673
    // dest <= inst<cond>(src)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1674
    fn internal_cond_unop(&mut self, inst: &str, dest: &P<Value>, src: &P<Value>, cond: &str) {
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
        let inst = inst.to_string();
        let cond = cond.to_string();
        trace!("emit: \t{} {} {} -> {}", inst, cond, src, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src, inst.len() + 1 + reg1.len() + 1);

        let asm = format!("{} {},{},{}", inst, reg1, reg2, cond);

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1686
1687
            ignore_zero_register(id1, vec![loc1]),
            ignore_zero_register(id2, vec![loc2]),
1688
1689
1690
1691
            false
        )
    }

1692
    // dest <= inst<cond>(src1, src2)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1693
    fn internal_cond_binop(&mut self, inst: &str, dest: &P<Value>, src1: &P<Value>, src2: &P<Value>, cond: &str) {
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
        let inst = inst.to_string();
        let cond = cond.to_string();
        trace!("emit: \t{} {}, {}, {} -> {}", inst, cond, src1, src2, dest);

        let (reg1, id1, loc1) = self.prepare_reg(dest, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src1, inst.len() + 1 + reg1.len() + 1);
        let (reg3, id3, loc3) = self.prepare_reg(src2, inst.len() + 1 + reg1.len() + 1 + reg2.len() + 1);

        let asm = format!("{} {},{},{},{}", inst, reg1, reg2, reg3, cond);

        self.add_asm_inst(
            asm,
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1706
1707
            ignore_zero_register(id1, vec![loc1]),
            create_hash_map(vec![(id2, loc2), (id3, loc3)]),
1708
1709
1710
1711
            false
        )
    }

1712
    // PSTATE.<NZCV> = inst<cond>(src1, src2, flags)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1713
    fn internal_cond_cmpop(&mut self, inst: &str, src1: &P<Value>, src2: &P<Value>, flags: u8, cond: &str)
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
    {
        let inst = inst.to_string();
        let cond = cond.to_string();
        trace!("emit: \t{} {}, {}, {}, {}", inst, src1, src2, flags, cond);

        let (reg1, id1, loc1) = self.prepare_reg(src1, inst.len() + 1);
        let (reg2, id2, loc2) = self.prepare_reg(src2, inst.len() + 1 + reg1.len() + 1);

        let asm = format!("{} {},{},#{},{}", inst, reg1, reg2, flags, cond);

        self.add_asm_inst(
            asm,
1726
            linked_hashmap! {},
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1727
            create_hash_map(vec![(id1, loc1), (id2, loc2)]),
1728
1729
1730
1731
            false
        )
    }

1732
    // PSTATE.<NZCV> = inst<cond>(src1, src2, flags)
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1733
    fn internal_cond_cmpop_imm(&mut self, inst: &str, src1: &P<Value>, src2: u8, flags: u8, cond: &str)
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
    {
        let inst = inst.to_string();
        let cond = cond.to_string();
        trace!("emit: \t{} {}, {}, {}, {}", inst, src1, src2, flags, cond);

        let (reg1, id1, loc1) = self.prepare_reg(src1, inst.len() + 1);

        let asm = format!("{} {},#{},#{},{}", inst, reg1, src2, flags, cond);

        self.add_asm_inst(
            asm,
1745
            linked_hashmap! { },
Isaac Oscar Gariano's avatar
Isaac Oscar Gariano committed
1746
            ignore_zero_register(id1, vec![loc1]),
1747
1748
1749
1750
            false
        )
    }

1751
    fn internal_load(&mut self, inst: &str, dest: &P<Value>, src: Mem, signed: bool, is_spill_related: bool, is_callee_saved: bool)
1752
1753
1754
1755
1756