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llvm-project/lld/test/ELF/linkerscript/common.s

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[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
Don't depend on lld creating space for the headers. Currently lld will implicitly reserve space for the headers. This is not the case is bfd, where it is the script responsibility to use SIZEOF_HEADERS. This means that a script not using SIZEOF_HEADERS and expecting the address of the first section to be 0 would fail with lld. I am fixing that is the next commit. This one just makes the tests explicitly use SIZEOF_HEADERS to avoid the dependency on the current behaviour. llvm-svn: 282814
2016-09-30 08:06:24 +08:00
# RUN: echo "SECTIONS { . = SIZEOF_HEADERS; .common : { *(COMMON) } }" > %t.script
[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# RUN: ld.lld -o %t1 --script %t.script %t
# RUN: llvm-readobj -s -t %t1 | FileCheck %s
# CHECK: Section {
Make test less dependent on the section order. This means either relaxing CHECKs or listing more sections and addresses in linker scripts. llvm-svn: 282014
2016-09-21 04:48:54 +08:00
# CHECK: Index:
# CHECK: Name: .common
# CHECK-NEXT: Type: SHT_NOBITS
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: SHF_WRITE
[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x200
Make test less dependent on the section order. This means either relaxing CHECKs or listing more sections and addresses in linker scripts. llvm-svn: 282014
2016-09-21 04:48:54 +08:00
# CHECK-NEXT: Offset: 0x
Currently lld creates a single section to collect all commons. There is no way to separate commons based on file name patterns. The following linker script construct does not work because commons are allocated before section placement is done and the only synthesized BssSection that holds all commons has no file associated with it: SECTIONS { .common_0 : { *file0.o(COMMON) }} This patch changes the allocation of commons to create a section per common symbol and let the section logic do the layout. Differential revision: https://reviews.llvm.org/D37489 llvm-svn: 312796
2017-09-09 00:22:43 +08:00
# CHECK-NEXT: Size: 384
[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 256
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK: Symbol {
Make test less dependent on the section order. This means either relaxing CHECKs or listing more sections and addresses in linker scripts. llvm-svn: 282014
2016-09-21 04:48:54 +08:00
# CHECK: Name: q1
Currently lld creates a single section to collect all commons. There is no way to separate commons based on file name patterns. The following linker script construct does not work because commons are allocated before section placement is done and the only synthesized BssSection that holds all commons has no file associated with it: SECTIONS { .common_0 : { *file0.o(COMMON) }} This patch changes the allocation of commons to create a section per common symbol and let the section logic do the layout. Differential revision: https://reviews.llvm.org/D37489 llvm-svn: 312796
2017-09-09 00:22:43 +08:00
# CHECK-NEXT: Value: 0x200
[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# CHECK-NEXT: Size: 128
Make test less dependent on the section order. This means either relaxing CHECKs or listing more sections and addresses in linker scripts. llvm-svn: 282014
2016-09-21 04:48:54 +08:00
# CHECK-NEXT: Binding: Global
# CHECK-NEXT: Type: Object
[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# CHECK-NEXT: Other: 0
Make test less dependent on the section order. This means either relaxing CHECKs or listing more sections and addresses in linker scripts. llvm-svn: 282014
2016-09-21 04:48:54 +08:00
# CHECK-NEXT: Section: .common
[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
Make test less dependent on the section order. This means either relaxing CHECKs or listing more sections and addresses in linker scripts. llvm-svn: 282014
2016-09-21 04:48:54 +08:00
# CHECK-NEXT: Name: q2
Currently lld creates a single section to collect all commons. There is no way to separate commons based on file name patterns. The following linker script construct does not work because commons are allocated before section placement is done and the only synthesized BssSection that holds all commons has no file associated with it: SECTIONS { .common_0 : { *file0.o(COMMON) }} This patch changes the allocation of commons to create a section per common symbol and let the section logic do the layout. Differential revision: https://reviews.llvm.org/D37489 llvm-svn: 312796
2017-09-09 00:22:43 +08:00
# CHECK-NEXT: Value: 0x300
[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# CHECK-NEXT: Size: 128
Make test less dependent on the section order. This means either relaxing CHECKs or listing more sections and addresses in linker scripts. llvm-svn: 282014
2016-09-21 04:48:54 +08:00
# CHECK-NEXT: Binding: Global
# CHECK-NEXT: Type: Object
[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# CHECK-NEXT: Other: 0
Make test less dependent on the section order. This means either relaxing CHECKs or listing more sections and addresses in linker scripts. llvm-svn: 282014
2016-09-21 04:48:54 +08:00
# CHECK-NEXT: Section: .common
[ELF] Allows setting section for common symbols in linker script llvm-svn: 277023
2016-07-29 03:24:13 +08:00
# CHECK-NEXT: }
.globl _start
_start:
jmp _start
.comm q1,128,8
.comm q2,128,256