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

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Add -z {combreloc,copyreloc,noexecstack,lazy,relro,text}. Differential Revision: https://reviews.llvm.org/D45902 llvm-svn: 330482
2018-04-21 05:24:08 +08:00
// REQUIRES: x86
Reapply fixed r253967. llvm-svn: 253971
2015-11-24 18:15:50 +08:00
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
// RUN: ld.lld -shared %t2.o -o %t2.so
Add -z {combreloc,copyreloc,noexecstack,lazy,relro,text}. Differential Revision: https://reviews.llvm.org/D45902 llvm-svn: 330482
2018-04-21 05:24:08 +08:00
// RUN: ld.lld %t.o %t2.so -z now -z norelro -z relro -o %t
[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-readelf -l %t | FileCheck --check-prefix=CHECK --check-prefix=FULLRELRO %s
Add -z {combreloc,copyreloc,noexecstack,lazy,relro,text}. Differential Revision: https://reviews.llvm.org/D45902 llvm-svn: 330482
2018-04-21 05:24:08 +08:00
// RUN: ld.lld %t.o %t2.so -z norelro -z relro -o %t
[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-readelf -l %t | FileCheck --check-prefix=CHECK --check-prefix=PARTRELRO %s
Add -z {combreloc,copyreloc,noexecstack,lazy,relro,text}. Differential Revision: https://reviews.llvm.org/D45902 llvm-svn: 330482
2018-04-21 05:24:08 +08:00
Reapply fixed r253967. llvm-svn: 253971
2015-11-24 18:15:50 +08:00
// RUN: ld.lld %t.o %t2.so -z norelro -o %t
[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-readelf -l %t | FileCheck --check-prefix=NORELRO %s
Reapply fixed r253967. llvm-svn: 253971
2015-11-24 18:15:50 +08:00
Simplify the test. NFC. llvm-svn: 289499
2016-12-13 07:52:21 +08:00
// CHECK: Program Headers:
// CHECK-NEXT: Type
// CHECK-NEXT: PHDR
// CHECK-NEXT: LOAD
// CHECK-NEXT: LOAD
// CHECK-NEXT: LOAD
[ELF] Split RW PT_LOAD on the PT_GNU_RELRO boundary Summary: Based on Peter Collingbourne's suggestion in D56828. Before D56828: PT_LOAD(.data PT_GNU_RELRO(.data.rel.ro .bss.rel.ro) .bss) Old: PT_LOAD(PT_GNU_RELRO(.data.rel.ro .bss.rel.ro) .data .bss) New: PT_LOAD(PT_GNU_RELRO(.data.rel.ro .bss.rel.ro)) PT_LOAD(.data. .bss) The new layout reflects the runtime memory mappings. By having two PT_LOAD segments, we can utilize the NOBITS part of the first PT_LOAD and save bytes for .bss.rel.ro. .bss.rel.ro is currently small and only used by copy relocations of symbols in read-only segments, but it can be used for other purposes in the future, e.g. if a relro section's statically relocated data is all zeros, we can move it to .bss.rel.ro. Reviewers: espindola, ruiu, pcc Reviewed By: ruiu Subscribers: nemanjai, jvesely, nhaehnle, javed.absar, kbarton, emaste, arichardson, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D58892 llvm-svn: 356226
2019-03-15 09:29:57 +08:00
// CHECK-NEXT: LOAD
Simplify the test. NFC. llvm-svn: 289499
2016-12-13 07:52:21 +08:00
// CHECK-NEXT: DYNAMIC
// CHECK-NEXT: GNU_RELRO
// CHECK: Section to Segment mapping:
Reapply fixed r253967. llvm-svn: 253971
2015-11-24 18:15:50 +08:00
[ELF] Split RW PT_LOAD on the PT_GNU_RELRO boundary Summary: Based on Peter Collingbourne's suggestion in D56828. Before D56828: PT_LOAD(.data PT_GNU_RELRO(.data.rel.ro .bss.rel.ro) .bss) Old: PT_LOAD(PT_GNU_RELRO(.data.rel.ro .bss.rel.ro) .data .bss) New: PT_LOAD(PT_GNU_RELRO(.data.rel.ro .bss.rel.ro)) PT_LOAD(.data. .bss) The new layout reflects the runtime memory mappings. By having two PT_LOAD segments, we can utilize the NOBITS part of the first PT_LOAD and save bytes for .bss.rel.ro. .bss.rel.ro is currently small and only used by copy relocations of symbols in read-only segments, but it can be used for other purposes in the future, e.g. if a relro section's statically relocated data is all zeros, we can move it to .bss.rel.ro. Reviewers: espindola, ruiu, pcc Reviewed By: ruiu Subscribers: nemanjai, jvesely, nhaehnle, javed.absar, kbarton, emaste, arichardson, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D58892 llvm-svn: 356226
2019-03-15 09:29:57 +08:00
// FULLRELRO: 03 .openbsd.randomdata .dynamic .got .got.plt {{$}}
// PARTRELRO: 03 .openbsd.randomdata .dynamic .got {{$}}
Reapply fixed r253967. llvm-svn: 253971
2015-11-24 18:15:50 +08:00
Simplify the test. NFC. llvm-svn: 289499
2016-12-13 07:52:21 +08:00
// NORELRO-NOT: GNU_RELRO
Reapply fixed r253967. llvm-svn: 253971
2015-11-24 18:15:50 +08:00
.global _start
_start:
.long bar
Fix copy relocations in pie. We were creating the copy relocations just fine, but then thinking that the .bss position could be preempted and creating a dynamic relocation to it, which would crash at runtime since that memory is read only. llvm-svn: 268668
2016-05-06 03:41:49 +08:00
jmp *bar2@GOTPCREL(%rip)
Reapply fixed r253967. llvm-svn: 253971
2015-11-24 18:15:50 +08:00
.section .data,"aw"
.quad 0
.zero 4
.section .foo,"aw"
.section .bss,"",@nobits
[ELF] - Treat .openbsd.randomdata as relro section That was requested by Mark Kettenis in llvm-dev: "It is the intention that .openbsd.randomdata sections are made read-only after initialization. The native (ld.bfd based) OpenBSD toolchain accomplishes this by including .openbsd.randomdata into the PT_GNU_RELRO segment." He suggested code change, I added testcase. Differential revision: https://reviews.llvm.org/D27974 llvm-svn: 290174
2016-12-20 19:28:54 +08:00
.section .openbsd.randomdata, "aw"
.quad 0