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[ELF][test] Add linkerscript/linkorder-linked-to.s

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Delete relocatable-linkorder.s which is covered.
This commit is contained in:
Fangrui Song 2020-03-30 14:37:46 -07:00
parent 38ddb49e52
commit 51475e4023
2 changed files with 74 additions and 36 deletions
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74
lld/test/ELF/linkerscript/linkorder-linked-to.s Normal file
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# REQUIRES: x86
## Test how we set the sh_link field of a SHF_LINK_ORDER output section.
## Additionally, test that in a relocatable link, SHF_LINK_ORDER sections are
## not combined. Combining them will arbitrarily choose a single output
## section, losing tracking of correct dependencies.
# RUN: llvm-mc -filetype=obj --triple=x86_64 %s -o %t.o
## In the absence of a SECTIONS command.
# RUN: ld.lld %t.o -o %t
# RUN: llvm-readelf -S -x foo %t | FileCheck --check-prefixes=EXE,EXE-HEX %s
# RUN: ld.lld %t.o -o %t.ro -r
# RUN: llvm-readelf -S %t.ro | FileCheck --check-prefix=REL %s
## A non-relocatable link places readonly sections before read-executable sections.
# EXE: [Nr] Name {{.*}} Flg Lk
# EXE-NEXT: [ 0]
# EXE-NEXT: [ 1] foo {{.*}} AL 2
# EXE-NEXT: [ 2] .text {{.*}} AX 0
## An implementation detail: foo is moved after its linked-to section (orphan).
# REL: [Nr] Name {{.*}} Flg Lk
# REL-NEXT: [ 0]
# REL-NEXT: [ 1] .text {{.*}} AX 0
# REL-NEXT: [ 2] .text.f1 {{.*}} AX 0
# REL-NEXT: [ 3] foo {{.*}} AL 2
# REL-NEXT: [ 4] .text.f2 {{.*}} AX 0
# REL-NEXT: [ 5] foo {{.*}} AL 4
## A SECTIONS command combines .text.*
# RUN: echo 'SECTIONS { .text : { *(.text.f1) *(.text.f2) } }' > %t1.lds
# RUN: ld.lld -T %t1.lds %t.o -o %t1
# RUN: llvm-readelf -S -x foo %t1 | FileCheck --check-prefixes=EXE,EXE-HEX %s
# RUN: ld.lld -T %t1.lds %t.o -o %t1.ro -r
# RUN: llvm-readelf -S -x foo %t1.ro | FileCheck --check-prefix=REL1 %s
# REL1: [Nr] Name {{.*}} Flg Lk
# REL1-NEXT: [ 0]
# REL1-NEXT: [ 1] .text {{.*}} AX 0
# REL1-NEXT: [ 2] foo {{.*}} AL 1
## A SECTIONS command separates .text.*
# RUN: echo 'SECTIONS { .text.f1 : { *(.text.f1) } .text.f2 : { *(.text.f2) } }' > %t2.lds
# RUN: ld.lld -T %t2.lds %t.o -o %t2
# RUN: llvm-readelf -S -x foo %t2 | FileCheck --check-prefixes=EXE2,EXE-HEX %s
# RUN: ld.lld -T %t2.lds %t.o -o %t2.ro -r
# RUN: llvm-readelf -S %t2.ro | FileCheck --check-prefixes=REL2 %s
# EXE2: [Nr] Name {{.*}} Flg Lk
# EXE2-NEXT: [ 0]
# EXE2-NEXT: [ 1] foo {{.*}} AL 2
# EXE2-NEXT: [ 2] .text.f1 {{.*}} AX 0
# EXE2-NEXT: [ 3] .text.f2 {{.*}} AX 0
# REL2: [Nr] Name {{.*}} Flg Lk
# REL2-NEXT: [ 0]
# REL2-NEXT: [ 1] .text.f1 {{.*}} AX 0
# REL2-NEXT: [ 2] .text.f2 {{.*}} AX 0
# REL2-NEXT: [ 3] .text {{.*}} AX 0
# REL2-NEXT: [ 4] foo {{.*}} AL 1
# REL2-NEXT: [ 5] foo {{.*}} AL 2
# EXE-HEX: Hex dump of section 'foo':
# EXE-HEX-NEXT: 0102
.section .text.f1,"ax",@progbits
ret
.section .text.f2,"ax",@progbits
ret
.section foo,"ao",@progbits,.text.f2
.byte 2
.section foo,"ao",@progbits,.text.f1
.byte 1

36
lld/test/ELF/relocatable-linkorder.s
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// REQUIRES: x86
// RUN: llvm-mc %s -o %t.o -filetype=obj --triple=x86_64-unknown-linux
// RUN: ld.lld %t.o -o %t -r
// RUN: llvm-readelf -S %t | FileCheck --check-prefix=DIFFERENT %s
// RUN: echo 'SECTIONS { .text.f1 : { *(.text.f1) } .text.f2 : { *(.text.f2) } }' > %t.lds
// RUN: ld.lld %t.o -o %t -r %t.lds
// RUN: llvm-readelf -S %t | FileCheck --check-prefix=DIFFERENT %s
// RUN: echo 'SECTIONS { .text : { *(.text.f1) *(.text.f2) } }' > %t.lds
// RUN: ld.lld %t.o -o %t -r %t.lds
// RUN: llvm-readelf -S -x foo %t | FileCheck --check-prefix=SAME %s
/// Test that SHF_LINK_ORDER sections with different linked sections
/// aren't merged.
.section .text.f1,"ax",@progbits
.globl f1
f1:
ret
.section .text.f2,"ax",@progbits
.globl f2
f2:
ret
// SAME: foo
// DIFFERENT: foo
.section foo,"ao",@progbits,.text.f2,unique,2
.quad 2
// SAME-NOT: foo
// DIFFERENT: foo
.section foo,"ao",@progbits,.text.f1,unique,1
.quad 1
// SAME: Hex dump of section 'foo':
// SAME: 01000000 00000000 02000000 00000000