derek.holloway
7502bf64a4
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211 lines
11 KiB
ArmAsm
211 lines
11 KiB
ArmAsm
# REQUIRES: aarch64
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# RUN: rm -rf %t && split-file %s %t && cd %t
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# RUN: llvm-mc -filetype=obj -triple=aarch64 %p/Inputs/shared2.s -o a.o
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# RUN: ld.lld -shared a.o -soname=so -o a.so
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# RUN: llvm-mc -filetype=obj -triple=aarch64 main.s -o main.o
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# RUN: ld.lld -pie main.o a.so -o main
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# RUN: llvm-readobj -r main | FileCheck --check-prefix=UNPACKED %s
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# UNPACKED: Section ({{.+}}) .rela.dyn {
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# UNPACKED-NEXT: 0x30470 R_AARCH64_AUTH_RELATIVE - 0x1
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# UNPACKED-NEXT: 0x30478 R_AARCH64_AUTH_RELATIVE - 0x30472
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# UNPACKED-NEXT: 0x30480 R_AARCH64_AUTH_RELATIVE - 0xFFFFFFFFFFFFFFFD
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# UNPACKED-NEXT: 0x30488 R_AARCH64_AUTH_RELATIVE - 0x12345678
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# UNPACKED-NEXT: 0x30490 R_AARCH64_AUTH_RELATIVE - 0x123456789A
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# UNPACKED-NEXT: 0x30498 R_AARCH64_AUTH_RELATIVE - 0xFFFFFFEDCBA98766
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# UNPACKED-NEXT: 0x304A0 R_AARCH64_AUTH_RELATIVE - 0x8003046F
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# UNPACKED-NEXT: 0x304B9 R_AARCH64_AUTH_RELATIVE - 0x4
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# UNPACKED-NEXT: 0x304C2 R_AARCH64_AUTH_RELATIVE - 0x30475
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# UNPACKED-NEXT: 0x304A8 R_AARCH64_AUTH_ABS64 zed2 0x1111
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# UNPACKED-NEXT: 0x304B0 R_AARCH64_AUTH_ABS64 bar2 0x0
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# UNPACKED-NEXT: }
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# RUN: ld.lld main.o a.so -o main.nopie
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# RUN: llvm-readobj -r main.nopie | FileCheck --check-prefix=NOPIE %s
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# NOPIE: Section ({{.+}}) .rela.dyn {
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# NOPIE: 0x230460 R_AARCH64_AUTH_RELATIVE - 0x200001
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# NOPIE-NEXT: 0x230468 R_AARCH64_AUTH_RELATIVE - 0x230462
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# NOPIE-NEXT: 0x230470 R_AARCH64_AUTH_RELATIVE - 0x1FFFFD
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# NOPIE-NEXT: 0x230478 R_AARCH64_AUTH_RELATIVE - 0x12545678
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# NOPIE-NEXT: 0x230480 R_AARCH64_AUTH_RELATIVE - 0x123476789A
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# NOPIE-NEXT: 0x230488 R_AARCH64_AUTH_RELATIVE - 0xFFFFFFEDCBC98766
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# NOPIE-NEXT: 0x230490 R_AARCH64_AUTH_RELATIVE - 0x8023045F
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# NOPIE-NEXT: 0x2304A9 R_AARCH64_AUTH_RELATIVE - 0x200004
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# NOPIE-NEXT: 0x2304B2 R_AARCH64_AUTH_RELATIVE - 0x230465
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# NOPIE-NEXT: 0x230498 R_AARCH64_AUTH_ABS64 zed2 0x1111
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# NOPIE-NEXT: 0x2304A0 R_AARCH64_AUTH_ABS64 bar2 0x0
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# NOPIE-NEXT: }
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# RUN: ld.lld -pie -z pack-relative-relocs main.o a.so -o main.pie
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# RUN: llvm-readelf -S -d -r -x .test main.pie | FileCheck --check-prefixes=RELR,HEX %s
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# RELR: Section Headers:
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# RELR-NEXT: Name Type Address Off Size ES Flg Lk Inf Al
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# RELR: .rela.dyn RELA {{0*}}[[ADDR1:.+]] {{0*}}[[ADDR1]] 000090 18 A 1 0 8
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# RELR: .relr.auth.dyn AARCH64_AUTH_RELR {{0*}}[[ADDR2:.+]] {{0*}}[[ADDR2]] 000018 08 A 0 0 8
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# RELR: Dynamic section at offset {{.+}} contains 16 entries
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# RELR: 0x0000000070000012 (AARCH64_AUTH_RELR) 0x[[ADDR2]]
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# RELR-NEXT: 0x0000000070000011 (AARCH64_AUTH_RELRSZ) 24 (bytes)
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# RELR-NEXT: 0x0000000070000013 (AARCH64_AUTH_RELRENT) 8 (bytes)
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## Decoded SHT_RELR section is same as UNPACKED,
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## but contains only the relative relocations.
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## Any relative relocations with odd offset or value wider than 32 bits stay in SHT_RELA.
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# RELR: Relocation section '.rela.dyn' at offset 0x[[ADDR1]] contains 6 entries:
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# RELR-NEXT: Offset Info Type Symbol's Value Symbol's Name + Addend
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# RELR-NEXT: 0000000000030460 0000000000000411 R_AARCH64_AUTH_RELATIVE 123456789a
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# RELR-NEXT: 0000000000030468 0000000000000411 R_AARCH64_AUTH_RELATIVE ffffffedcba98766
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# RELR-NEXT: 0000000000030470 0000000000000411 R_AARCH64_AUTH_RELATIVE 8003043f
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# RELR-NEXT: 0000000000030489 0000000000000411 R_AARCH64_AUTH_RELATIVE 4
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# RELR-NEXT: 0000000000030478 0000000100000244 R_AARCH64_AUTH_ABS64 0000000000000000 zed2 + 1111
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# RELR-NEXT: 0000000000030480 0000000200000244 R_AARCH64_AUTH_ABS64 0000000000000000 bar2 + 0
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# RELR-EMPTY:
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# RELR-NEXT: Relocation section '.relr.auth.dyn' at offset 0x[[ADDR2]] contains 5 entries:
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# RELR-NEXT: Index: Entry Address Symbolic Address
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# RELR-NEXT: 0000: 0000000000030440 0000000000030440 $d
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# RELR-NEXT: 0001: 000000000000000f 0000000000030448 $d + 0x8
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# RELR-NEXT: 0000000000030450 $d + 0x10
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# RELR-NEXT: 0000000000030458 $d + 0x18
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# RELR-NEXT: 0002: 0000000000030492 0000000000030492 $d + 0x52
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# HEX: Hex dump of section '.test':
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# HEX-NEXT: 0x00030440 01000000 2a000020 42040300 2b000000
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## ^^^^^^^^ Implicit val = 1 = __ehdr_start + 1
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## ^^^^ Discr = 42
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## ^^ Key (bits 5..6) = DA
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## ^^^^^^^^ Implicit val = 0x30442 = 0x30440 + 2 = .test + 2
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## ^^^^ Discr = 43
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## ^^ Key (bits 5..6) = IA
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# HEX-NEXT: 0x00030450 fdffffff 2c000080 78563412 2d000020
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## ^^^^^^^^ Implicit val = -3 = __ehdr_start - 3
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## ^^^^ Discr = 44
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## ^^ Key (bits 5..6) = IA
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## ^^ Addr diversity (bit 7) = true
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## ^^^^^^^^ Implicit val = 0x12345678 = __ehdr_start + 0x12345678
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## ^^^^ Discr = 45
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## ^^ Key (bits 5..6) = DA
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# HEX-NEXT: 0x00030460 00000000 2e000020 00000000 2f000020
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## ^^^^^^^^ No implicit val (rela reloc due val wider than 32 bits)
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## ^^^^ Discr = 46
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## ^^ Key (bits 5..6) = DA
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## ^^^^^^^^ No implicit val (rela reloc due to val wider than 32 bits)
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## ^^^^ Discr = 47
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## ^^ Key (bits 5..6) = DA
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# HEX-NEXT: 0x00030470 00000000 30000020 00000000 31000020
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## ^^^^^^^^ No implicit val (rela reloc due val wider than 32 bits)
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## ^^^^ Discr = 48
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## ^^ Key (bits 5..6) = DA
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## ^^^^^^^^ No implicit val (rela reloc due to a preemptible symbol)
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## ^^^^ Discr = 49
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## ^^ Key (bits 5..6) = DA
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# HEX-NEXT: 0x00030480 00000000 32000000 77000000 00330000
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## ^^^^^^^^ No implicit val (rela reloc due to a preemptible symbol)
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## ^^^^ Discr = 50
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## ^^ Key (bits 5..6) = IA
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## ^^^^^^ ^^ No implicit val (rela reloc due to odd offset)
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## ^^^^ Discr = 51
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# HEX-NEXT: 0x00030490 20774504 03003400 0020{{\ }}
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## ^^ Key (bits 5..6) = DA
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## ^^^^ ^^^^ Implicit val = 0x30445 = 0x30440 + 5 = .test + 5
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## ^^^^ Discr = 52
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## ^^ Key (bits 5..6) = DA
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#--- main.s
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.section .test, "aw"
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.p2align 3
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.quad (__ehdr_start + 1)@AUTH(da,42)
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.quad (.test + 2)@AUTH(ia,43)
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.quad (__ehdr_start - 3)@AUTH(ia,44,addr)
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.quad (__ehdr_start + 0x12345678)@AUTH(da,45)
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## Addend wider than 32 bits, not enough room for storing implicitly, would go to rela
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.quad (__ehdr_start + 0x123456789A)@AUTH(da,46)
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## Negative addend wider than 32 bits, not enough room for storing implicitly, would go to rela
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.quad (__ehdr_start - 0x123456789A)@AUTH(da,47)
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## INT32_MAX plus non-zero .test is wider than 32 bits, not enough room for storing implicitly, would go to rela
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.quad (.test + 0x7FFFFFFF)@AUTH(da,48)
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.quad (zed2 + 0x1111)@AUTH(da,49)
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.quad bar2@AUTH(ia,50)
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.byte 0x77
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.quad (__ehdr_start + 4)@AUTH(da,51)
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.byte 0x77
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.quad (.test + 5)@AUTH(da,52)
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#--- empty-relr.s
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## .relr.auth.dyn relocations that do not fit 32 bits are moved to .rela.dyn.
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## In this case .relr.auth.dyn will be made empty, but
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## removeUnusedSyntheticSections fails to remove the section.
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# RUN: llvm-mc -filetype=obj -triple=aarch64 empty-relr.s -o empty-relr.o
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# RUN: ld.lld -pie -z pack-relative-relocs empty-relr.o -o empty-relr
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# RUN: llvm-readelf -S -d -r empty-relr | FileCheck --check-prefixes=EMPTY-RELR %s
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# EMPTY-RELR: Section Headers:
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# EMPTY-RELR-NEXT: Name Type Address Off Size ES Flg Lk Inf Al
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# EMPTY-RELR: .rela.dyn RELA {{0*}}[[ADDR1:.+]] {{0*}}[[ADDR1]] 000018 18 A 0 0 8
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# EMPTY-RELR: .relr.auth.dyn AARCH64_AUTH_RELR {{0*}}[[ADDR2:.+]] {{0*}}[[ADDR2]] 000000 08 A 0 0 8
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# EMPTY-RELR: Dynamic section at offset {{.+}} contains 12 entries
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# EMPTY-RELR-NOT: (AARCH64_AUTH_RELR)
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# EMPTY-RELR-NOT: (AARCH64_AUTH_RELRSZ)
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# EMPTY-RELR-NOT: (AARCH64_AUTH_RELRENT)
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# EMPTY-RELR: 0x0000000000000007 (RELA) 0x[[ADDR1]]
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# EMPTY-RELR-NEXT: 0x0000000000000008 (RELASZ) 24 (bytes)
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# EMPTY-RELR-NEXT: 0x0000000000000009 (RELAENT) 24 (bytes)
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# EMPTY-RELR: Relocation section '.rela.dyn' at offset {{.+}} contains 1 entries:
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# EMPTY-RELR-NEXT: Offset Info Type Symbol's Value Symbol's Name + Addend
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# EMPTY-RELR-NEXT: 0000000000030320 0000000000000411 R_AARCH64_AUTH_RELATIVE 8003031f
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# EMPTY-RELR-EMPTY:
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# EMPTY-RELR-NEXT: Relocation section '.relr.auth.dyn' at offset {{.+}} contains 0 entries:
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# EMPTY-RELR-NEXT: Index: Entry Address Symbolic Address
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.section .test, "aw"
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.p2align 3
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.quad (.test + 0x7FFFFFFF)@AUTH(da,42)
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#--- empty-rela.s
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## .relr.auth.dyn relocations that do not fit 32 bits are moved to .rela.dyn.
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## If this scenario does not happen, .rela.dyn will remain empty,
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## but removeUnusedSyntheticSections fails to remove the section.
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# RUN: llvm-mc -filetype=obj -triple=aarch64 empty-rela.s -o empty-rela.o
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# RUN: ld.lld -pie -z pack-relative-relocs empty-rela.o -o empty-rela
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# RUN: llvm-readelf -S -d -r empty-rela | FileCheck --check-prefixes=EMPTY-RELA %s
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# RUN: ld.lld -r -z pack-relative-relocs empty-rela.o -o empty-rela.ro
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# RUN: llvm-readelf -S empty-rela.ro | FileCheck --check-prefixes=EMPTY-RELA-RO %s
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# EMPTY-RELA: Section Headers:
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# EMPTY-RELA-NEXT: Name Type Address Off Size ES Flg Lk Inf Al
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# EMPTY-RELA: .rela.dyn RELA {{0*}}[[ADDR1:.+]] {{0*}}[[ADDR1]] 000000 18 A 0 0 8
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# EMPTY-RELA: .relr.auth.dyn AARCH64_AUTH_RELR {{0*}}[[ADDR2:.+]] {{0*}}[[ADDR2]] 000008 08 A 0 0 8
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# EMPTY-RELA: Dynamic section at offset {{.+}} contains 12 entries
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# EMPTY-RELA-NOT: (RELR)
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# EMPTY-RELA-NOT: (RELRSZ)
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# EMPTY-RELA-NOT: (RELRENT)
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# EMPTY-RELA: 0x0000000070000012 (AARCH64_AUTH_RELR) 0x[[ADDR2]]
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# EMPTY-RELA-NEXT: 0x0000000070000011 (AARCH64_AUTH_RELRSZ) 8 (bytes)
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# EMPTY-RELA-NEXT: 0x0000000070000013 (AARCH64_AUTH_RELRENT) 8 (bytes)
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# EMPTY-RELA: Relocation section '.rela.dyn' at offset {{.+}} contains 0 entries:
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# EMPTY-RELA-NEXT: Offset Info Type Symbol's Value Symbol's Name
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# EMPTY-RELA-EMPTY:
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# EMPTY-RELA-NEXT: Relocation section '.relr.auth.dyn' at offset {{.+}} contains 1 entries:
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# EMPTY-RELA-NEXT: Index: Entry Address Symbolic Address
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# EMPTY-RELA-NEXT: 0000: 0000000000030310 0000000000030310 $d
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# EMPTY-RELA-RO-NOT: .rela.dyn
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.section .test, "aw"
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.p2align 3
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.quad (.test + 0x12345678)@AUTH(da,42)
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