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LoongArch: Add DT_RELR tests

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Most tests are ported from AArch64.

The relr-addend test is added to make sure the addend (link-time address)
is correctly written into the relocated section.  Doing so is not
strictly needed for RELA, but strictly needed for RELR).

Signed-off-by: Xi Ruoyao <xry111@xry111.site>
This commit is contained in:
Xi Ruoyao 2024-06-30 15:18:25 +08:00 committed by liuzhensong
parent d89ecf33ab
commit 3880820e34
19 changed files with 485 additions and 0 deletions
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10
ld/testsuite/ld-loongarch-elf/ld-loongarch-elf.exp
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@ -135,10 +135,20 @@ if [istarget "loongarch64-*-*"] {
run_dump_test "r_larch_32_elf64"
run_dump_test "ifunc-reloc"
run_dump_test "protected-func"
run_dump_test "relr-addend"
run_dump_test "relr-align"
run_dump_test "relr-data-shared"
run_dump_test "relr-discard-shared"
run_dump_test "relr-got-shared"
run_dump_test "relr-text-shared"
}
if [check_pie_support] {
run_dump_test "pie_discard"
run_dump_test "relr-data-pie"
run_dump_test "relr-discard-pie"
run_dump_test "relr-got-pie"
run_dump_test "relr-text-pie"
}
run_dump_test "max_imm_b16"

11
ld/testsuite/ld-loongarch-elf/relr-addend.d Normal file
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@ -0,0 +1,11 @@
#ld: -shared -z pack-relative-relocs -T relr-relocs.ld
#objdump: -s -j.got -j.data
.*: file format elf64-loongarch
Contents of section \.got:
20000 [0-9a-f]+ [0-9a-f]+ 00003412 00000000 .*
20010 08003412 00000000 .*
Contents of section \.data:
12340000 14451100 00000000 10989101 00000000 .*
12340010 00003412 00000000 08003412 00000000 .*

17
ld/testsuite/ld-loongarch-elf/relr-addend.s Normal file
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@ -0,0 +1,17 @@
.data
.align 8
x:
.quad 0x114514
y:
.quad 0x1919810
px:
.quad x
py:
.quad y
.text
.align 2
_start:
la.got $a0, x
la.got $a1, y
ret

22
ld/testsuite/ld-loongarch-elf/relr-align.d Normal file
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@ -0,0 +1,22 @@
#source: relr-align.s
#ld: -shared -z pack-relative-relocs -T relr-relocs.ld
#readelf: -rW
Relocation section '\.rela.dyn' at offset 0x[0-9a-f]+ contains 3 entries:
Offset Info Type Symbol's Value Symbol's Name \+ Addend
0000000012340011 0000000000000003 R_LARCH_RELATIVE 10000
0000000012340019 0000000000000003 R_LARCH_RELATIVE 10000
0000000012340041 0000000000000003 R_LARCH_RELATIVE 10000
Relocation section '\.relr.dyn' at offset 0x[0-9a-f]+ contains 9 entries which relocate 10 locations:
Index: Entry Address Symbolic Address
0000: 0000000012340000 0000000012340000 double_0
0001: 0000000000000003 0000000012340008 double_0 \+ 0x8
0002: 0000000012340022 0000000012340022 double_2
0003: 0000000000000003 000000001234002a double_2 \+ 0x8
0004: 0000000012340038 0000000012340038 single_0
0005: 000000001234004a 000000001234004a single_2
0006: 0000000012340058 0000000012340058 big
0007: 8000000100000001 0000000012340158 big \+ 0x100
0000000012340250 big \+ 0x1f8
0008: 0000000000000003 0000000012340258 big \+ 0x200

106
ld/testsuite/ld-loongarch-elf/relr-align.s Normal file
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@ -0,0 +1,106 @@
# Test DT_RELR with differently aligned relative relocs.
.text
.global _start
_start:
foo:
.data
.p2align 3
double_0:
.quad foo
.quad foo
.byte 0
double_1:
.quad foo
.quad foo
.byte 0
double_2:
.quad foo
.quad foo
.byte 0
.byte 0
.byte 0
.byte 0
.byte 0
.byte 0
single_0:
.quad foo
.byte 0
single_1:
.quad foo
.byte 0
single_2:
.quad foo
.byte 0
.byte 0
.byte 0
.byte 0
.byte 0
.byte 0
big:
.quad foo
.quad 1
.quad 2
.quad 3
.quad 4
.quad 5
.quad 6
.quad 7
.quad 8
.quad 9
.quad 10
.quad 11
.quad 12
.quad 13
.quad 14
.quad 15
.quad 16
.quad 17
.quad 18
.quad 19
.quad 20
.quad 21
.quad 22
.quad 23
.quad 24
.quad 25
.quad 26
.quad 27
.quad 28
.quad 29
.quad 30
.quad 31
.quad foo + 32
.quad 33
.quad 34
.quad 35
.quad 36
.quad 37
.quad 38
.quad 39
.quad 40
.quad 41
.quad 42
.quad 43
.quad 44
.quad 45
.quad 46
.quad 47
.quad 48
.quad 49
.quad 50
.quad 51
.quad 52
.quad 53
.quad 54
.quad 55
.quad 56
.quad 57
.quad 58
.quad 59
.quad 60
.quad 61
.quad 62
.quad foo + 63
.quad foo + 64

18
ld/testsuite/ld-loongarch-elf/relr-data-pie.d Normal file
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@ -0,0 +1,18 @@
#source: relr-data.s
#ld: -pie -z pack-relative-relocs -T relr-relocs.ld
#readelf: -rW
Relocation section '\.rela\.dyn' at offset 0x[0-9a-f]+ contains 5 entries:
Offset Info Type Symbol's Value Symbol's Name \+ Addend
0000000012340000 0000000000000003 R_LARCH_RELATIVE 10004
0000000012340008 0000000000000003 R_LARCH_RELATIVE 10008
0000000012340010 0000000000000003 R_LARCH_RELATIVE 1000c
0000000012340018 0000000000000003 R_LARCH_RELATIVE 12340050
0000000012340040 0000000c00000002 R_LARCH_64 0000000000000000 sym_weak_undef \+ 0
Relocation section '\.relr\.dyn' at offset 0x[0-9a-f]+ contains 2 entries which relocate 4 locations:
Index: Entry Address Symbolic Address
0000: 0000000012340020 0000000012340020 aligned_local
0001: 0000000000000027 0000000012340028 aligned_hidden
0000000012340030 aligned_global
0000000012340048 aligned_DYNAMIC

18
ld/testsuite/ld-loongarch-elf/relr-data-shared.d Normal file
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@ -0,0 +1,18 @@
#source: relr-data.s
#ld: -shared -z pack-relative-relocs -T relr-relocs.ld
#readelf: -rW
Relocation section '\.rela\.dyn' at offset 0x[0-9a-f]+ contains 6 entries:
Offset Info Type Symbol's Value Symbol's Name \+ Addend
0000000012340000 0000000000000003 R_LARCH_RELATIVE 10004
0000000012340008 0000000000000003 R_LARCH_RELATIVE 10008
0000000012340018 0000000000000003 R_LARCH_RELATIVE 12340050
0000000012340010 0000000d00000002 R_LARCH_64 000000000001000c sym_global \+ 0
0000000012340030 0000000d00000002 R_LARCH_64 000000000001000c sym_global \+ 0
0000000012340040 0000000c00000002 R_LARCH_64 0000000000000000 sym_weak_undef \+ 0
Relocation section '\.relr\.dyn' at offset 0x[0-9a-f]+ contains 2 entries which relocate 3 locations:
Index: Entry Address Symbolic Address
0000: 0000000012340020 0000000012340020 aligned_local
0001: 0000000000000023 0000000012340028 aligned_hidden
0000000012340048 aligned_DYNAMIC

71
ld/testsuite/ld-loongarch-elf/relr-data.s Normal file
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@ -0,0 +1,71 @@
# Test symbol references in .data when used with DT_RELR.
# Relocations for unaligned sections are currently not packed.
.text
.global _start
_start:
nop
sym_local:
nop
.global sym_hidden
.hidden sym_hidden
sym_hidden:
nop
.global sym_global
sym_global:
nop
.global sym_global_abs
.set sym_global_abs, 42
.global sym_weak_undef
.weak sym_weak_undef
.section .data.unaligned_local
unaligned_local:
.quad sym_local
.section .data.unaligned_hidden
unaligned_hidden:
.quad sym_hidden
.section .data.unaligned_global
unaligned_global:
.quad sym_global
.section .data.unaligned_DYNAMIC
unaligned_DYNAMIC:
.quad _DYNAMIC
.section .data.aligned_local
.p2align 1
aligned_local:
.quad sym_local
.section .data.aligned_hidden
.p2align 1
aligned_hidden:
.quad sym_hidden
.section .data.aligned_global
.p2align 1
aligned_global:
.quad sym_global
.section .data.aligned_global_abs
.p2align 1
aligned_global_abs:
.quad sym_global_abs
.section .data.aligned_weak_undef
.p2align 1
aligned_weak_undef:
.quad sym_weak_undef
.section .data.aligned_DYNAMIC
.p2align 1
aligned_DYNAMIC:
.quad _DYNAMIC

8
ld/testsuite/ld-loongarch-elf/relr-discard-pie.d Normal file
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@ -0,0 +1,8 @@
#source: relr-discard.s
#ld: -pie -z pack-relative-relocs -T relr-discard.ld
#readelf: -rW
Relocation section '\.relr\.dyn' at offset 0x[0-9a-f]+ contains 2 entries which relocate 2 locations:
Index: Entry Address Symbolic Address
0000: 0000000000020008 0000000000020008 _GLOBAL_OFFSET_TABLE_ \+ 0x8
0001: 0000000000000003 0000000000020010 _GLOBAL_OFFSET_TABLE_ \+ 0x10

11
ld/testsuite/ld-loongarch-elf/relr-discard-shared.d Normal file
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@ -0,0 +1,11 @@
#source: relr-discard.s
#ld: -shared -z pack-relative-relocs -T relr-discard.ld
#readelf: -rW
Relocation section '\.rela\.dyn' at offset 0x[0-9a-f]+ contains 1 entry:
Offset Info Type Symbol's Value Symbol's Name \+ Addend
0000000000020010 0000000300000002 R_LARCH_64 000000000001000c sym_global \+ 0
Relocation section '\.relr\.dyn' at offset 0x[0-9a-f]+ contains 1 entry which relocates 1 location:
Index: Entry Address Symbolic Address
0000: 0000000000020008 0000000000020008 _GLOBAL_OFFSET_TABLE_ \+ 0x8

13
ld/testsuite/ld-loongarch-elf/relr-discard.ld Normal file
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@ -0,0 +1,13 @@
OUTPUT_ARCH(loongarch64)
ENTRY(_start)
SECTIONS
{
/DISCARD/ : { *(.discard.*) }
. = 0x10000;
.text : { *(.text) }
. = 0x20000;
.got : { *(.got) *(.got.plt)}
. = 0x30000;
.data : { *(.data) *(.data.*) }
}

61
ld/testsuite/ld-loongarch-elf/relr-discard.s Normal file
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@ -0,0 +1,61 @@
# Test DT_RELR with references in discarded sections.
.text
.p2align 3
.global _start
_start:
nop
sym_local:
nop
.global sym_hidden
.hidden sym_hidden
sym_hidden:
nop
.global sym_global
sym_global:
nop
.global sym_global_abs
.set sym_global_abs, 42
.global sym_weak_undef
.weak sym_weak_undef
.section .discard.got_local,"ax"
la.got $a0, sym_local
.section .discard.got_global,"ax"
la.got $a0, sym_global
.section .discard.local,"a"
.p2align 1
discard_local:
.quad sym_local
.section .discard.hidden,"a"
.p2align 1
discard_hidden:
.quad sym_hidden
.section .discard.global,"a"
.p2align 1
discard_global:
.quad sym_global
.section .discard.global_abs,"a"
.p2align 1
discard_global_abs:
.quad sym_global_abs
.section .discard.weak_undef,"a"
.p2align 1
discard_weak_undef:
.quad sym_weak_undef
.section .discard._DYNAMIC,"a"
.p2align 1
discard_DYNAMIC:
.quad _DYNAMIC

15
ld/testsuite/ld-loongarch-elf/relr-got-pie.d Normal file
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@ -0,0 +1,15 @@
#source: relr-got.s
#ld: -pie -z pack-relative-relocs -T relr-relocs.ld
#readelf: -rW
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 2 entries:
Offset Info Type Symbol's Value Symbol's Name \+ Addend
0000000000000000 0000000000000000 R_LARCH_NONE 0
0000000000020030 0000000200000002 R_LARCH_64 0000000000000000 sym_weak_undef \+ 0
Relocation section '.relr.dyn' at offset 0x[0-9a-f]+ contains 2 entries which relocate 4 locations:
Index: Entry Address Symbolic Address
0000: 0000000000020008 0000000000020008 _GLOBAL_OFFSET_TABLE_ \+ 0x8
0001: 000000000000000f 0000000000020010 _GLOBAL_OFFSET_TABLE_ \+ 0x10
0000000000020018 _GLOBAL_OFFSET_TABLE_ \+ 0x18
0000000000020020 _GLOBAL_OFFSET_TABLE_ \+ 0x20

15
ld/testsuite/ld-loongarch-elf/relr-got-shared.d Normal file
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@ -0,0 +1,15 @@
#source: relr-got.s
#ld: -shared -z pack-relative-relocs -T relr-relocs.ld
#readelf: -rW
Relocation section '\.rela\.dyn' at offset 0x[0-9a-f]+ contains 3 entries:
Offset Info Type Symbol's Value Symbol's Name \+ Addend
0000000000020020 0000000300000002 R_LARCH_64 0000000000010034 sym_global \+ 0
0000000000020028 0000000500000002 R_LARCH_64 000000000000002a sym_global_abs \+ 0
0000000000020030 0000000200000002 R_LARCH_64 0000000000000000 sym_weak_undef \+ 0
Relocation section '\.relr\.dyn' at offset 0x[0-9a-f]+ contains 2 entries which relocate 3 locations:
Index: Entry Address Symbolic Address
0000: 0000000000020008 0000000000020008 _GLOBAL_OFFSET_TABLE_ \+ 0x8
0001: 0000000000000007 0000000000020010 _GLOBAL_OFFSET_TABLE_ \+ 0x10
0000000000020018 _GLOBAL_OFFSET_TABLE_ \+ 0x18

27
ld/testsuite/ld-loongarch-elf/relr-got.s Normal file
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@ -0,0 +1,27 @@
.text
.global _start
_start:
la.got $a0, sym_local
la.got $a1, sym_hidden
la.got $a2, sym_global
la.got $a3, sym_global_abs
la.got $a4, sym_weak_undef
la.got $a5, _DYNAMIC
sym_local:
nop
.global sym_hidden
.hidden sym_hidden
sym_hidden:
nop
.global sym_global
sym_global:
nop
.global sym_global_abs
.set sym_global_abs, 42
.global sym_weak_undef
.weak sym_weak_undef

24
ld/testsuite/ld-loongarch-elf/relr-relocs.ld Normal file
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@ -0,0 +1,24 @@
/* Script for DT_RELR tests */
OUTPUT_ARCH(loongarch64)
ENTRY(_start)
SECTIONS
{
PROVIDE (__executable_start = 0x8000); . = 0x10000;
.text :
{
*(.before)
*(.text)
*(.after)
} =0
. = 0x20000;
.got :
{
*(.got)
*(.got.plt)
}
. = 0x12340000;
.data :
{
*(.data)
}
}

14
ld/testsuite/ld-loongarch-elf/relr-text-pie.d Normal file
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@ -0,0 +1,14 @@
#source: relr-text.s
#ld: -pie -z pack-relative-relocs -T relr-relocs.ld
#readelf: -drW
#...
0x0000000000000016 \(TEXTREL\) 0x0
#...
0x0000000000000024 \(RELR\) .*
0x0000000000000023 \(RELRSZ\) 8 \(bytes\)
0x0000000000000025 \(RELRENT\) 8 \(bytes\)
#...
Relocation section '\.relr\.dyn' .* contains 1 entry which relocates 1 location:
Index: Entry Address Symbolic Address
0000: 0000000000010000 0000000000010000 _start

14
ld/testsuite/ld-loongarch-elf/relr-text-shared.d Normal file
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@ -0,0 +1,14 @@
#source: relr-text.s
#ld: -shared -z pack-relative-relocs -T relr-relocs.ld
#readelf: -drW
#...
0x0000000000000016 \(TEXTREL\) 0x0
#...
0x0000000000000024 \(RELR\) .*
0x0000000000000023 \(RELRSZ\) 8 \(bytes\)
0x0000000000000025 \(RELRENT\) 8 \(bytes\)
#...
Relocation section '\.relr\.dyn' .* contains 1 entry which relocates 1 location:
Index: Entry Address Symbolic Address
0000: 0000000000010000 0000000000010000 _start

10
ld/testsuite/ld-loongarch-elf/relr-text.s Normal file
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@ -0,0 +1,10 @@
# Test DT_RELR with DT_TEXTREL and R_LARCH_ALIGN.
.text
.p2align 5
.global _start
_start:
.global foo
.hidden foo
foo:
.quad foo