1# RUN: llvm-mc -filetype=obj -triple=mipsel-unknown-nacl %s \
2# RUN:  | llvm-objdump -triple mipsel -disassemble -no-show-raw-insn - \
3# RUN:  | FileCheck %s
4
5# This test tests that address-masking sandboxing is added when given assembly
6# input.
7
8
9# Test that address-masking sandboxing is added before indirect branches and
10# returns.
11
12	.align	4
13test1:
14	.set	noreorder
15
16        jr	$a0
17        nop
18        jr	$ra
19        nop
20
21# CHECK-LABEL:   test1:
22
23# CHECK:         and     $4, $4, $14
24# CHECK-NEXT:    jr      $4
25
26# Check that additional nop is inserted, to align mask and jr to the next
27# bundle.
28
29# CHECK-NEXT:    nop
30# CHECK-NEXT:    nop
31
32# CHECK:         and     $ra, $ra, $14
33# CHECK-NEXT:    jr      $ra
34
35
36
37# Test that address-masking sandboxing is added before load instructions.
38
39	.align	4
40test2:
41	.set	noreorder
42
43        lb      $4, 0($1)
44        nop
45        lbu     $4, 0($2)
46        lh      $4, 0($3)
47        lhu     $1, 0($4)
48        lw      $4, 0($5)
49        lwc1    $f0, 0($6)
50        ldc1    $f2, 0($7)
51        ll      $4, 0($8)
52        lwl     $4, 0($9)
53        lwr     $4, 0($10)
54
55        lw      $4, 0($sp)
56        lw      $4, 0($t8)
57
58# CHECK-LABEL:   test2:
59
60# CHECK:         and     $1, $1, $15
61# CHECK-NEXT:    lb      $4, 0($1)
62
63# Check that additional nop is inserted, to align mask and load to the next
64# bundle.
65
66# CHECK:         nop
67# CHECK:         nop
68
69# CHECK:         and     $2, $2, $15
70# CHECK-NEXT:    lbu     $4, 0($2)
71
72# CHECK:         and     $3, $3, $15
73# CHECK-NEXT:    lh      $4, 0($3)
74
75# CHECK:         and     $4, $4, $15
76# CHECK-NEXT:    lhu     $1, 0($4)
77
78# CHECK:         and     $5, $5, $15
79# CHECK-NEXT:    lw      $4, 0($5)
80
81# CHECK:         and     $6, $6, $15
82# CHECK-NEXT:    lwc1    $f0, 0($6)
83
84# CHECK:         and     $7, $7, $15
85# CHECK-NEXT:    ldc1    $f2, 0($7)
86
87# CHECK:         and     $8, $8, $15
88# CHECK-NEXT:    ll      $4, 0($8)
89
90# CHECK:         and     $9, $9, $15
91# CHECK-NEXT:    lwl     $4, 0($9)
92
93# CHECK:         and     $10, $10, $15
94# CHECK-NEXT:    lwr     $4, 0($10)
95
96
97# Check that loads where base register is $sp or $t8 (thread pointer register)
98# are not masked.
99
100# CHECK-NOT:     and
101# CHECK:         lw      $4, 0($sp)
102# CHECK-NOT:     and
103# CHECK:         lw      $4, 0($24)
104
105
106
107# Test that address-masking sandboxing is added before store instructions.
108
109	.align	4
110test3:
111	.set	noreorder
112
113        sb      $4, 0($1)
114        nop
115        sh      $4, 0($2)
116        sw      $4, 0($3)
117        swc1    $f0, 0($4)
118        sdc1    $f2, 0($5)
119        swl     $4, 0($6)
120        swr     $4, 0($7)
121        sc      $4, 0($8)
122
123        sw      $4, 0($sp)
124        sw      $4, 0($t8)
125
126# CHECK-LABEL:   test3:
127
128# CHECK:         and     $1, $1, $15
129# CHECK-NEXT:    sb      $4, 0($1)
130
131# Check that additional nop is inserted, to align mask and store to the next
132# bundle.
133
134# CHECK:         nop
135# CHECK:         nop
136
137# CHECK:         and     $2, $2, $15
138# CHECK-NEXT:    sh      $4, 0($2)
139
140# CHECK:         and     $3, $3, $15
141# CHECK-NEXT:    sw      $4, 0($3)
142
143# CHECK:         and     $4, $4, $15
144# CHECK-NEXT:    swc1    $f0, 0($4)
145
146# CHECK:         and     $5, $5, $15
147# CHECK-NEXT:    sdc1    $f2, 0($5)
148
149# CHECK:         and     $6, $6, $15
150# CHECK-NEXT:    swl     $4, 0($6)
151
152# CHECK:         and     $7, $7, $15
153# CHECK-NEXT:    swr     $4, 0($7)
154
155# CHECK:         and     $8, $8, $15
156# CHECK-NEXT:    sc      $4, 0($8)
157
158
159# Check that stores where base register is $sp or $t8 (thread pointer register)
160# are not masked.
161
162# CHECK-NOT:     and
163# CHECK:         sw      $4, 0($sp)
164# CHECK-NOT:     and
165# CHECK:         sw      $4, 0($24)
166
167
168
169# Test that address-masking sandboxing is added after instructions that change
170# stack pointer.
171
172	.align	4
173test4:
174	.set	noreorder
175
176        addiu   $sp, $sp, 24
177        nop
178        addu    $sp, $sp, $1
179        lw      $sp, 0($2)
180        lw      $sp, 123($sp)
181        sw      $sp, 123($sp)
182
183# CHECK-LABEL:   test4:
184
185# CHECK:         addiu   $sp, $sp, 24
186# CHECK-NEXT:    and     $sp, $sp, $15
187
188# Check that additional nop is inserted, to align instruction and mask to the
189# next bundle.
190
191# CHECK:         nop
192# CHECK:         nop
193
194# CHECK:         addu    $sp, $sp, $1
195# CHECK-NEXT:    and     $sp, $sp, $15
196
197# Since we next check sandboxing sequence which consists of 3 instructions,
198# check that 2 additional nops are inserted, to align it to the next bundle.
199
200# CHECK:         nop
201# CHECK:         nop
202
203
204# Check that for instructions that change stack-pointer and load from memory
205# masks are added before and after the instruction.
206
207# CHECK:         and     $2, $2, $15
208# CHECK-NEXT:    lw      $sp, 0($2)
209# CHECK-NEXT:    and     $sp, $sp, $15
210
211# For loads where $sp is destination and base, check that mask is added after
212# but not before.
213
214# CHECK-NOT:     and
215# CHECK:         lw      $sp, 123($sp)
216# CHECK-NEXT:    and     $sp, $sp, $15
217
218# For stores where $sp is destination and base, check that mask is added neither
219# before nor after.
220
221# CHECK-NOT:     and
222# CHECK:         sw      $sp, 123($sp)
223# CHECK-NOT:     and
224
225
226
227# Test that call + branch delay is aligned at bundle end.  Test that mask is
228# added before indirect calls.
229
230	.align	4
231test5:
232	.set	noreorder
233
234        jal func1
235        addiu $4, $zero, 1
236
237        nop
238        bal func2
239        addiu $4, $zero, 2
240
241        nop
242        nop
243        bltzal $t1, func3
244        addiu $4, $zero, 3
245
246        nop
247        nop
248        nop
249        bgezal $t2, func4
250        addiu $4, $zero, 4
251
252        jalr $t9
253        addiu $4, $zero, 5
254
255# CHECK-LABEL:   test5:
256
257# CHECK-NEXT:        nop
258# CHECK-NEXT:        nop
259# CHECK-NEXT:        jal
260# CHECK-NEXT:        addiu   $4, $zero, 1
261
262# CHECK-NEXT:        nop
263# CHECK-NEXT:        nop
264# CHECK-NEXT:        bal
265# CHECK-NEXT:        addiu   $4, $zero, 2
266
267# CHECK-NEXT:        nop
268# CHECK-NEXT:        nop
269# CHECK-NEXT:        bltzal
270# CHECK-NEXT:        addiu   $4, $zero, 3
271
272# CHECK-NEXT:        nop
273# CHECK-NEXT:        nop
274# CHECK-NEXT:        nop
275# CHECK-NEXT:        nop
276
277# CHECK-NEXT:        nop
278# CHECK-NEXT:        nop
279# CHECK-NEXT:        bgezal
280# CHECK-NEXT:        addiu   $4, $zero, 4
281
282# CHECK-NEXT:        nop
283# CHECK-NEXT:        and     $25, $25, $14
284# CHECK-NEXT:        jalr    $25
285# CHECK-NEXT:        addiu   $4, $zero, 5
286
287
288
289# Test that we can put non-dangerous loads and stores in branch delay slot.
290
291	.align	4
292test6:
293	.set	noreorder
294
295        jal func1
296        sw      $4, 0($sp)
297
298        bal func2
299        lw      $5, 0($t8)
300
301        jalr $t9
302        sw      $sp, 0($sp)
303
304# CHECK-LABEL:   test6:
305
306# CHECK-NEXT:        nop
307# CHECK-NEXT:        nop
308# CHECK-NEXT:        jal
309# CHECK-NEXT:        sw      $4, 0($sp)
310
311# CHECK-NEXT:        nop
312# CHECK-NEXT:        nop
313# CHECK-NEXT:        bal
314# CHECK-NEXT:        lw      $5, 0($24)
315
316# CHECK-NEXT:        nop
317# CHECK-NEXT:        and     $25, $25, $14
318# CHECK-NEXT:        jalr
319# CHECK-NEXT:        sw      $sp, 0($sp)
320