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llvm-project/lld/test/ELF/i386-merge.s

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Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=i386-pc-linux %s -o %t.o
// RUN: ld.lld %t.o -o %t -shared
[test] Change llvm-readobj -long-option to --long-option or well-known short options. NFC Also change some options that have different semantics (cause confusion) in llvm-readelf mode: -s => -S -t => --symbols -sd => --section-data llvm-svn: 359651
2019-05-01 13:49:01 +08:00
// RUN: llvm-readobj -S --section-data %t | FileCheck %s
Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
// CHECK: Name: .mysec
// CHECK-NEXT: Type:
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_MERGE
// CHECK-NEXT: ]
[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: Address: 0x178
Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size:
// CHECK-NEXT: Link:
// CHECK-NEXT: Info:
// CHECK-NEXT: AddressAlignment:
// CHECK-NEXT: EntrySize:
// CHECK-NEXT: SectionData (
// CHECK-NEXT: 0000: 42000000 |
// CHECK-NEXT: )
Don't depend on dynamic relocatinos in ro sections. Currently we don't check when creating relative relocations if the section is read only or not. I am about to fix that, so first update the patches that depend on the current behavior. llvm-svn: 268542
2016-05-05 04:25:19 +08:00
// CHECK: Name: .data
Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
Don't depend on dynamic relocatinos in ro sections. Currently we don't check when creating relative relocations if the section is read only or not. I am about to fix that, so first update the patches that depend on the current behavior. llvm-svn: 268542
2016-05-05 04:25:19 +08:00
// CHECK-NEXT: SHF_WRITE
Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
// CHECK-NEXT: ]
[ELF][X86] Allow PT_LOAD to have overlapping p_offset ranges on EM_386 Ported the D64906 technique to EM_386. If `sh_addralign(.tdata) < sh_addralign(.tbss)`, we can potentially make `p_vaddr(PT_TLS)%p_align(PT_TLS) != 0`. ld.so that are known to have problems if p_vaddr%p_align!=0: * FreeBSD 13.0-CURRENT rtld-elf * glibc https://sourceware.org/bugzilla/show_bug.cgi?id=24606 New test i386-tls-vaddr-align.s checks our workaround makes p_vaddr%p_align = 0. Reviewed By: ruiu Differential Revision: https://reviews.llvm.org/D65865 llvm-svn: 369347
2019-08-20 16:43:47 +08:00
// CHECK-NEXT: Address: 0x31D4
// CHECK-NEXT: Offset: 0x1D4
Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
// CHECK-NEXT: Size: 4
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
Don't depend on dynamic relocatinos in ro sections. Currently we don't check when creating relative relocations if the section is read only or not. I am about to fix that, so first update the patches that depend on the current behavior. llvm-svn: 268542
2016-05-05 04:25:19 +08:00
// CHECK-NEXT: AddressAlignment: 1
Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: SectionData (
[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: 0000: 78010000 |
Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
// CHECK-NEXT: )
[ELF] Make non-writable non-executable PROGBITS sections closer to .text This generalizes the old heuristic placing SHT_DYNSYM SHT_DYNSTR first in the readonly SHF_ALLOC segment. Reviewers: espindola Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D48406 llvm-svn: 335674
2018-06-27 06:13:32 +08:00
// The content of .data should be the address of .mysec.
Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
Don't depend on dynamic relocatinos in ro sections. Currently we don't check when creating relative relocations if the section is read only or not. I am about to fix that, so first update the patches that depend on the current behavior. llvm-svn: 268542
2016-05-05 04:25:19 +08:00
.data
Fix handling of addends on i386. Because of merge sections it is not sufficient to just add them while applying a relocation. llvm-svn: 264863
2016-03-30 20:40:38 +08:00
.long .mysec+4
.section .mysec,"aM",@progbits,4
.align 4
.long 0x42
.long 0x42