File: riscv-tlsdesc.s

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (249 lines) | stat: -rw-r--r-- 8,922 bytes parent folder | download | duplicates (10)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
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
# REQUIRES: riscv
# RUN: rm -rf %t && split-file %s %t && cd %t
# RUN: llvm-mc -filetype=obj -triple=riscv64 a.s -o a.64.o
# RUN: llvm-mc -filetype=obj -triple=riscv64 c.s -o c.64.o
# RUN: ld.lld -shared -soname=c.64.so c.64.o -o c.64.so
# RUN: llvm-mc -filetype=obj -triple=riscv32 --defsym ELF32=1 a.s -o a.32.o
# RUN: llvm-mc -filetype=obj -triple=riscv32 --defsym ELF32=1 c.s -o c.32.o
# RUN: ld.lld -shared -soname=c.32.so c.32.o -o c.32.so

# RUN: ld.lld -shared -z now a.64.o c.64.o -o a.64.so
# RUN: llvm-readobj -r -x .got a.64.so | FileCheck --check-prefix=GD64-RELA %s
# RUN: llvm-objdump --no-show-raw-insn -M no-aliases -h -d a.64.so | FileCheck %s --check-prefix=GD64

# RUN: ld.lld -shared -z now a.64.o c.64.o -o rel.64.so -z rel
# RUN: llvm-readobj -r -x .got rel.64.so | FileCheck --check-prefix=GD64-REL %s

# RUN: ld.lld -e 0 -z now a.64.o c.64.o -o a.64.le
# RUN: llvm-readelf -r a.64.le | FileCheck --check-prefix=NOREL %s
# RUN: llvm-objdump --no-show-raw-insn -M no-aliases -h -d a.64.le | FileCheck %s --check-prefix=LE64

# RUN: ld.lld -e 0 -z now a.64.o c.64.so -o a.64.ie
# RUN: llvm-readobj -r a.64.ie | FileCheck --check-prefix=IE64-RELA %s
# RUN: llvm-objdump --no-show-raw-insn -M no-aliases -h -d a.64.ie | FileCheck %s --check-prefix=IE64

## 32-bit code is mostly the same. We only test a few variants. The IE optimization uses the LW instruction.

# RUN: ld.lld -shared -z now a.32.o c.32.o -o rel.32.so -z rel
# RUN: llvm-readobj -r -x .got rel.32.so | FileCheck --check-prefix=GD32-REL %s
# RUN: ld.lld -e 0 -z now a.32.o c.32.so -o a.32.ie
# RUN: llvm-objdump --no-show-raw-insn -M no-aliases -h -d a.32.ie | FileCheck %s --check-prefix=IE32

## Prior to https://github.com/llvm/llvm-project/pull/85817 the local TLSDESC
## labels would be marked STT_TLS, resulting in an error "has an STT_TLS symbol but doesn't have an SHF_TLS section"

# RUN: llvm-mc -triple=riscv64 -filetype=obj d.s -o d.64.o
# RUN: ld.lld -shared -soname=d.64.so -o d.64.so d.64.o --fatal-warnings
# RUN: llvm-mc -triple=riscv32 -filetype=obj d.s -o d.32.o --defsym ELF32=1
# RUN: ld.lld -shared -soname=d.32.so -o d.32.so d.32.o --fatal-warnings

## The output has a TLS reference but no TLS section.
# RUN: llvm-mc -filetype=obj -triple=riscv64 a1.s -o a1.64.o
# RUN: ld.lld -pie a1.64.o c.64.so -o a1.64
# RUN: llvm-objdump --no-show-raw-insn -M no-aliases -Rd a1.64 | FileCheck %s --check-prefix=IE64A

# GD64-RELA:      .rela.dyn {
# GD64-RELA-NEXT:   0x2408 R_RISCV_TLSDESC - 0x7FF
# GD64-RELA-NEXT:   0x23E8 R_RISCV_TLSDESC a 0x0
# GD64-RELA-NEXT:   0x23F8 R_RISCV_TLSDESC c 0x0
# GD64-RELA-NEXT: }
# GD64-RELA:      Hex dump of section '.got':
# GD64-RELA-NEXT: 0x000023e0 20230000 00000000 00000000 00000000 #
# GD64-RELA-NEXT: 0x000023f0 00000000 00000000 00000000 00000000 .

# GD64-REL:      .rel.dyn {
# GD64-REL-NEXT:   0x23F0 R_RISCV_TLSDESC -
# GD64-REL-NEXT:   0x23D0 R_RISCV_TLSDESC a
# GD64-REL-NEXT:   0x23E0 R_RISCV_TLSDESC c
# GD64-REL-NEXT: }
# GD64-REL:      Hex dump of section '.got':
# GD64-REL-NEXT: 0x000023c8 08230000 00000000 00000000 00000000 .
# GD64-REL-NEXT: 0x000023d8 00000000 00000000 00000000 00000000 .
# GD64-REL-NEXT: 0x000023e8 00000000 00000000 00000000 00000000 .
# GD64-REL-NEXT: 0x000023f8 ff070000 00000000                   .

# GD32-REL:      .rel.dyn {
# GD32-REL-NEXT:   0x2274 R_RISCV_TLSDESC -
# GD32-REL-NEXT:   0x2264 R_RISCV_TLSDESC a
# GD32-REL-NEXT:   0x226C R_RISCV_TLSDESC c
# GD32-REL-NEXT: }
# GD32-REL:      Hex dump of section '.got':
# GD32-REL-NEXT: 0x00002260 00220000 00000000 00000000 00000000 .
# GD32-REL-NEXT: 0x00002270 00000000 00000000 ff070000          .

# GD64:      .got     00000038 00000000000023e0

## &.got[a]-. = 0x23e0+8 - 0x12e0 = 0x1108
# GD64:        12e0: auipc   a0, 0x1
# GD64-NEXT:         ld      a1, 0x108(a0)
# GD64-NEXT:         addi    a0, a0, 0x108
# GD64-NEXT:         jalr    t0, 0x0(a1)
# GD64-NEXT:         add     a0, a0, tp

## &.got[b]-. = 0x23e0+40 - 0x12f4 = 0x1114
# GD64:        12f4: auipc   a2, 0x1
# GD64-NEXT:         ld      a3, 0x114(a2)
# GD64-NEXT:         addi    a0, a2, 0x114
# GD64-NEXT:         jalr    t0, 0x0(a3)
# GD64-NEXT:         add     a0, a0, tp

## &.got[c]-. = 0x23e0+24 - 0x1308 = 0x10f0
# GD64:        1308: auipc   a4, 0x1
# GD64-NEXT:         ld      a5, 0xf0(a4)
# GD64-NEXT:         addi    a0, a4, 0xf0
# GD64-NEXT:         jalr    t0, 0x0(a5)
# GD64-NEXT:         add     a0, a0, tp

# NOREL: no relocations

# LE64-LABEL: <.Ltlsdesc_hi0>:
## st_value(a) = 8
# LE64-NEXT:         addi    zero, zero, 0x0
# LE64-NEXT:         addi    zero, zero, 0x0
# LE64-NEXT:         addi    zero, zero, 0x0
# LE64-NEXT:         addi    a0, zero, 0x8
# LE64-NEXT:         add     a0, a0, tp
## st_value(b) = 2047
# LE64-LABEL: <.Ltlsdesc_hi1>:
# LE64-NEXT:         addi    zero, zero, 0x0
# LE64-NEXT:         addi    zero, zero, 0x0
# LE64-NEXT:         addi    zero, zero, 0x0
# LE64-NEXT:         addi    a0, zero, 0x7ff
# LE64-NEXT:         add     a0, a0, tp
## st_value(c) = 2048
# LE64-LABEL: <.Ltlsdesc_hi2>:
# LE64-NEXT:         addi    zero, zero, 0x0
# LE64-NEXT:         addi    zero, zero, 0x0
# LE64-NEXT:         lui     a0, 0x1
# LE64-NEXT:         addi    a0, a0, -0x800
# LE64-NEXT:         add     a0, a0, tp

# IE64-RELA:      .rela.dyn {
# IE64-RELA-NEXT:   0x123B0 R_RISCV_TLS_TPREL64 c 0x0
# IE64-RELA-NEXT: }

# IE64:       .got     00000010 00000000000123a8

## a and b are optimized to use LE. c is optimized to IE.
# IE64-LABEL: <.Ltlsdesc_hi0>:
# IE64-NEXT:         addi    zero, zero, 0x0
# IE64-NEXT:         addi    zero, zero, 0x0
# IE64-NEXT:         addi    zero, zero, 0x0
# IE64-NEXT:         addi    a0, zero, 0x8
# IE64-NEXT:         add     a0, a0, tp
# IE64-LABEL: <.Ltlsdesc_hi1>:
# IE64-NEXT:         addi    zero, zero, 0x0
# IE64-NEXT:         addi    zero, zero, 0x0
# IE64-NEXT:         addi    zero, zero, 0x0
# IE64-NEXT:         addi    a0, zero, 0x7ff
# IE64-NEXT:         add     a0, a0, tp
## &.got[c]-. = 0x123a8+8 - 0x112b8 = 0x10f8
# IE64-LABEL: <.Ltlsdesc_hi2>:
# IE64-NEXT:         addi    zero, zero, 0x0
# IE64-NEXT:         addi    zero, zero, 0x0
# IE64-NEXT:  112b8: auipc   a0, 0x1
# IE64-NEXT:         ld      a0, 0xf8(a0)
# IE64-NEXT:         add     a0, a0, tp

# IE32:       .got     00000008 00012248

# IE32-LABEL: <.Ltlsdesc_hi0>:
## st_value(a) = 8
# IE32-NEXT:         addi    zero, zero, 0x0
# IE32-NEXT:         addi    zero, zero, 0x0
# IE32-NEXT:         addi    zero, zero, 0x0
# IE32-NEXT:         addi    a0, zero, 0x8
# IE32-NEXT:         add     a0, a0, tp
## st_value(b) = 2047
# IE32-LABEL: <.Ltlsdesc_hi1>:
# IE32-NEXT:         addi    zero, zero, 0x0
# IE32-NEXT:         addi    zero, zero, 0x0
# IE32-NEXT:         addi    zero, zero, 0x0
# IE32-NEXT:         addi    a0, zero, 0x7ff
# IE32-NEXT:         add     a0, a0, tp
## &.got[c]-. = 0x12248+4 - 0x111cc = 0x1080
# IE32-LABEL: <.Ltlsdesc_hi2>:
# IE32-NEXT:         addi    zero, zero, 0x0
# IE32-NEXT:         addi    zero, zero, 0x0
# IE32-NEXT:  111cc: auipc   a0, 0x1
# IE32-NEXT:         lw      a0, 0x80(a0)
# IE32-NEXT:         add     a0, a0, tp

# IE64A:       OFFSET           TYPE                     VALUE
# IE64A-NEXT:  0000000000002340 R_RISCV_TLS_TPREL64      c
# IE64A-EMPTY:
## &.got[c]-. = 0x2340 - 0x1258 = 0x10e8
# IE64A-LABEL: <.Ltlsdesc_hi2>:
# IE64A-NEXT:         addi    zero, zero, 0x0
# IE64A-NEXT:         addi    zero, zero, 0x0
# IE64A-NEXT:   1258: auipc   a0, 0x1
# IE64A-NEXT:         ld      a0, 0xe8(a0)
# IE64A-NEXT:         add     a0, a0, tp

#--- a.s
.macro load dst, src
.ifdef ELF32
lw \dst, \src
.else
ld \dst, \src
.endif
.endm

.Ltlsdesc_hi0:
  auipc a0, %tlsdesc_hi(a)
  load  a1, %tlsdesc_load_lo(.Ltlsdesc_hi0)(a0)
  addi  a0, a0, %tlsdesc_add_lo(.Ltlsdesc_hi0)
  jalr  t0, 0(a1), %tlsdesc_call(.Ltlsdesc_hi0)
  add   a0, a0, tp

.Ltlsdesc_hi1:
  auipc a2, %tlsdesc_hi(b)
  load  a3, %tlsdesc_load_lo(.Ltlsdesc_hi1)(a2)
  addi  a0, a2, %tlsdesc_add_lo(.Ltlsdesc_hi1)
  jalr  t0, 0(a3), %tlsdesc_call(.Ltlsdesc_hi1)
  add   a0, a0, tp

.Ltlsdesc_hi2:
  auipc a4, %tlsdesc_hi(c)
  load  a5, %tlsdesc_load_lo(.Ltlsdesc_hi2)(a4)
  addi  a0, a4, %tlsdesc_add_lo(.Ltlsdesc_hi2)
  jalr  t0, 0(a5), %tlsdesc_call(.Ltlsdesc_hi2)
  add   a0, a0, tp

.section .tbss
.globl a
.zero 8
a:
.zero 2039  ## Place b at 0x7ff
b:
.zero 1

#--- a1.s
## a.s without TLS definitions.
.Ltlsdesc_hi2:
  auipc a4, %tlsdesc_hi(c)
  ld    a5, %tlsdesc_load_lo(.Ltlsdesc_hi2)(a4)
  addi  a0, a4, %tlsdesc_add_lo(.Ltlsdesc_hi2)
  jalr  t0, 0(a5), %tlsdesc_call(.Ltlsdesc_hi2)
  add   a0, a0, tp

#--- c.s
.tbss
.globl c
c: .zero 4

#--- d.s
.macro load dst, src
.ifdef ELF32
lw \dst, \src
.else
ld \dst, \src
.endif
.endm

.Ltlsdesc_hi0:
  auipc	a0, %tlsdesc_hi(foo)
  load	a1, %tlsdesc_load_lo(.Ltlsdesc_hi0)(a0)
  addi	a0, a0, %tlsdesc_add_lo(.Ltlsdesc_hi0)
  jalr	t0, 0(a1), %tlsdesc_call(.Ltlsdesc_hi0)
  add	a1, a0, tp