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aarch64: Test DT_RELR with discarded sections

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This commit is contained in:
Szabolcs Nagy 2024-06-04 09:23:41 +01:00
parent 961befd693
commit b284a87b49
5 changed files with 114 additions and 0 deletions
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2
ld/testsuite/ld-aarch64/aarch64-elf.exp
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@ -475,6 +475,8 @@ run_dump_test_lp64 "relr-got-pie"
run_dump_test_lp64 "relr-got-shared"
run_dump_test_lp64 "relr-text-pie"
run_dump_test_lp64 "relr-text-shared"
run_dump_test_lp64 "relr-discard-pie"
run_dump_test_lp64 "relr-discard-shared"
if { ![skip_sframe_tests] } {
run_dump_test "sframe-simple-1"

18
ld/testsuite/ld-aarch64/relr-discard-pie.d Normal file
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@ -0,0 +1,18 @@
#source: relr-discard.s
#ld: -pie --no-apply-dynamic-relocs -z pack-relative-relocs -T relr-discard.ld
#readelf: -rW
# Note: There are unnecessary GOT entries and *_NONE relocations
# for those GOT entries and discarded locations, this is bug 31850.
Relocation section '\.rela\.dyn' at offset 0x1.* contains 4 entries:
Offset Info Type Symbol's Value Symbol's Name \+ Addend
0000000000000000 0000000000000000 R_AARCH64_NONE 0
0000000000000000 0000000000000000 R_AARCH64_NONE 0
0000000000000000 0000000000000000 R_AARCH64_NONE 0
0000000000000000 0000000000000000 R_AARCH64_NONE 0
Relocation section '\.relr\.dyn' at offset 0x1.* 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

18
ld/testsuite/ld-aarch64/relr-discard-shared.d Normal file
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@ -0,0 +1,18 @@
#source: relr-discard.s
#ld: -shared --no-apply-dynamic-relocs -z pack-relative-relocs -T relr-discard.ld
#readelf: -rW
# Note: There are unnecessary GOT entries and *_NONE relocations
# for those GOT entries and discarded locations, this is bug 31850.
Relocation section '\.rela\.dyn' at offset 0x1.* contains 5 entries:
Offset Info Type Symbol's Value Symbol's Name \+ Addend
0000000000000000 0000000000000000 R_AARCH64_NONE 0
0000000000000000 0000000000000000 R_AARCH64_NONE 0
0000000000000000 0000000000000000 R_AARCH64_NONE 0
0000000000000000 0000000000000000 R_AARCH64_NONE 0
0000000000020010 .* R_AARCH64_GLOB_DAT 000000000001000c sym_global \+ 0
Relocation section '\.relr\.dyn' at offset 0x1.* contains 1 entry which relocates 1 location:
Index: Entry Address Symbolic Address
0000: 0000000000020008 0000000000020008 _GLOBAL_OFFSET_TABLE_ \+ 0x8

13
ld/testsuite/ld-aarch64/relr-discard.ld Normal file
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@ -0,0 +1,13 @@
OUTPUT_ARCH(aarch64)
ENTRY(_start)
SECTIONS
{
/DISCARD/ : { *(.discard.*) }
. = 0x10000;
.text : { *(.text) }
. = 0x20000;
.got : { *(.got) *(.got.plt)}
. = 0x30000;
.data : { *(.data) *(.data.*) }
}

63
ld/testsuite/ld-aarch64/relr-discard.s Normal file
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@ -0,0 +1,63 @@
// 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"
adrp x0, :got:sym_local
ldr x0, [x0, :got_lo12:sym_local]
.section .discard.got_global,"ax"
adrp x0, :got:sym_global
ldr x0, [x0, :got_lo12:sym_global]
.section .discard.local,"a"
.p2align 1
discard_local:
.xword sym_local
.section .discard.hidden,"a"
.p2align 1
discard_hidden:
.xword sym_hidden
.section .discard.global,"a"
.p2align 1
discard_global:
.xword sym_global
.section .discard.global_abs,"a"
.p2align 1
discard_global_abs:
.xword sym_global_abs
.section .discard.weak_undef,"a"
.p2align 1
discard_weak_undef:
.xword sym_weak_undef
.section .discard._DYNAMIC,"a"
.p2align 1
discard_DYNAMIC:
.xword _DYNAMIC