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llvm-project/lld/test/ELF/relocation-copy-relro.s

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ELF: Reserve space for copy relocations of read-only symbols in relro. When reserving copy relocation space for a shared symbol, scan the DSO's program headers to see if the symbol is in a read-only segment. If so, reserve space for that symbol in a new synthetic section named .bss.rel.ro which will be covered by the relro program header. This fixes the security issue disclosed on the binutils mailing list at: https://sourceware.org/ml/libc-alpha/2016-12/msg00914.html Differential Revision: https://reviews.llvm.org/D28272 llvm-svn: 291524
2017-01-10 09:21:50 +08:00
// REQUIRES: x86
[ELF][test] Simplify and reorganize tests Add file-level comments Delete insignificant addresses to make them more tolerant to layout changes Simplify test output Delete simple Inputs/*.s files Delete version-script-copy-rel.s - covered by verdef-defaultver.s Delete version-wildcard.test - covered by version-script-glob.s llvm-svn: 371213
2019-09-06 23:10:31 +08:00
// Reserve space for copy relocations of read-only symbols in .bss.rel.ro
ELF: Reserve space for copy relocations of read-only symbols in relro. When reserving copy relocation space for a shared symbol, scan the DSO's program headers to see if the symbol is in a read-only segment. If so, reserve space for that symbol in a new synthetic section named .bss.rel.ro which will be covered by the relro program header. This fixes the security issue disclosed on the binutils mailing list at: https://sourceware.org/ml/libc-alpha/2016-12/msg00914.html Differential Revision: https://reviews.llvm.org/D28272 llvm-svn: 291524
2017-01-10 09:21:50 +08:00
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/relocation-copy-relro.s -o %t2.o
[ELF][test] Make tests more tolerant to exact symbol addresses llvm-svn: 371588
2019-09-11 14:20:14 +08:00
// RUN: ld.lld -shared %t2.o -soname=so -o %t.so
// RUN: ld.lld %t.o %t.so -o %t3
[llvm-readobj] llvm-readobj --elf-output-style=GNU => llvm-readelf While updating the test, change -l -S to -S -l as the output of -S goes before -l. llvm-svn: 359653
2019-05-01 14:02:16 +08:00
// RUN: llvm-readobj -S -l -r %t3 | FileCheck %s
ELF: Reserve space for copy relocations of read-only symbols in relro. When reserving copy relocation space for a shared symbol, scan the DSO's program headers to see if the symbol is in a read-only segment. If so, reserve space for that symbol in a new synthetic section named .bss.rel.ro which will be covered by the relro program header. This fixes the security issue disclosed on the binutils mailing list at: https://sourceware.org/ml/libc-alpha/2016-12/msg00914.html Differential Revision: https://reviews.llvm.org/D28272 llvm-svn: 291524
2017-01-10 09:21:50 +08:00
[ELF][test] Make tests more tolerant to exact symbol addresses llvm-svn: 371588
2019-09-11 14:20:14 +08:00
// CHECK: Name: .bss.rel.ro
ELF: Reserve space for copy relocations of read-only symbols in relro. When reserving copy relocation space for a shared symbol, scan the DSO's program headers to see if the symbol is in a read-only segment. If so, reserve space for that symbol in a new synthetic section named .bss.rel.ro which will be covered by the relro program header. This fixes the security issue disclosed on the binutils mailing list at: https://sourceware.org/ml/libc-alpha/2016-12/msg00914.html Differential Revision: https://reviews.llvm.org/D28272 llvm-svn: 291524
2017-01-10 09:21:50 +08:00
// CHECK-NEXT: Type: SHT_NOBITS (0x8)
// CHECK-NEXT: Flags [ (0x3)
// CHECK-NEXT: SHF_ALLOC (0x2)
// CHECK-NEXT: SHF_WRITE (0x1)
// CHECK-NEXT: ]
[ELF][X86] Allow PT_LOAD to have overlapping p_offset ranges on EM_X86_64 Port the D64906 technique to EM_X86_64. Differential Revision: https://reviews.llvm.org/D67482 llvm-svn: 371958
2019-09-16 15:05:34 +08:00
// CHECK-NEXT: Address: 0x202368
// CHECK-NEXT: Offset: 0x368
ELF: Reserve space for copy relocations of read-only symbols in relro. When reserving copy relocation space for a shared symbol, scan the DSO's program headers to see if the symbol is in a read-only segment. If so, reserve space for that symbol in a new synthetic section named .bss.rel.ro which will be covered by the relro program header. This fixes the security issue disclosed on the binutils mailing list at: https://sourceware.org/ml/libc-alpha/2016-12/msg00914.html Differential Revision: https://reviews.llvm.org/D28272 llvm-svn: 291524
2017-01-10 09:21:50 +08:00
// CHECK-NEXT: Size: 8
// CHECK: Type: PT_GNU_RELRO (0x6474E552)
[ELF][X86] Allow PT_LOAD to have overlapping p_offset ranges on EM_X86_64 Port the D64906 technique to EM_X86_64. Differential Revision: https://reviews.llvm.org/D67482 llvm-svn: 371958
2019-09-16 15:05:34 +08:00
// CHECK-NEXT: Offset: 0x2A8
// CHECK-NEXT: VirtualAddress: 0x2022A8
// CHECK-NEXT: PhysicalAddress: 0x2022A8
[ELF][test] Make tests more tolerant to exact symbol addresses llvm-svn: 371588
2019-09-11 14:20:14 +08:00
// CHECK-NEXT: FileSize: 192
[ELF][X86] Allow PT_LOAD to have overlapping p_offset ranges on EM_X86_64 Port the D64906 technique to EM_X86_64. Differential Revision: https://reviews.llvm.org/D67482 llvm-svn: 371958
2019-09-16 15:05:34 +08:00
// CHECK-NEXT: MemSize: 3416
ELF: Reserve space for copy relocations of read-only symbols in relro. When reserving copy relocation space for a shared symbol, scan the DSO's program headers to see if the symbol is in a read-only segment. If so, reserve space for that symbol in a new synthetic section named .bss.rel.ro which will be covered by the relro program header. This fixes the security issue disclosed on the binutils mailing list at: https://sourceware.org/ml/libc-alpha/2016-12/msg00914.html Differential Revision: https://reviews.llvm.org/D28272 llvm-svn: 291524
2017-01-10 09:21:50 +08:00
[llvm-readelf] Make --all output order closer to GNU readelf https://bugs.llvm.org/show_bug.cgi?id=43403 The new order makes it easy to compare the two tools' --all. Reviewed By: grimar, rupprecht Differential Revision: https://reviews.llvm.org/D75592
2020-03-04 11:49:14 +08:00
// CHECK: 0x202368 R_X86_64_COPY a 0x0
// CHECK: 0x20236C R_X86_64_COPY b 0x0
ELF: Reserve space for copy relocations of read-only symbols in relro. When reserving copy relocation space for a shared symbol, scan the DSO's program headers to see if the symbol is in a read-only segment. If so, reserve space for that symbol in a new synthetic section named .bss.rel.ro which will be covered by the relro program header. This fixes the security issue disclosed on the binutils mailing list at: https://sourceware.org/ml/libc-alpha/2016-12/msg00914.html Differential Revision: https://reviews.llvm.org/D28272 llvm-svn: 291524
2017-01-10 09:21:50 +08:00
.text
.global _start
_start:
movl $1, a
movl $2, b