shylie/llvm-project
1
0
Fork 0
Code Issues Pull Requests Actions 6 Packages Projects Releases Wiki Activity

[ELF] Improve -r section group tests

Browse Source
This commit is contained in:
Fangrui Song 2024-06-06 17:10:52 -07:00
parent 86070a84c4
commit aae025a01b
1 changed files with 51 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

77
lld/test/ELF/relocatable-comdat.s
View File

@ -3,46 +3,71 @@
## may be rewritten because group members may change their indices. Additionally,
## group member may be combined or discarded (e.g. /DISCARD/ or --gc-sections).
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
# RUN: ld.lld -r %t.o %t.o -o %t.ro
# RUN: llvm-readelf -g -S %t.ro | FileCheck %s
# RUN: rm -rf %t && split-file %s %t && cd %t
# RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
# RUN: ld.lld -r a.o a.o -o a.ro
# RUN: llvm-readelf -g -S a.ro | FileCheck %s
# CHECK: Name Type Address Off Size ES Flg Lk Inf Al
# CHECK: .group GROUP 0000000000000000 {{.*}} 000014 04 {{[1-9]}} [[#]] 4
# CHECK: Name Type Address Off Size ES Flg Lk Inf Al
# CHECK: .group GROUP 0000000000000000 {{.*}} 00001c 04 [[#]] [[#]] 4
# CHECK-NEXT: .rodata.bar PROGBITS 0000000000000000 {{.*}} 000001 00 AG 0 0 1
# CHECK-NEXT: .rodata.foo PROGBITS 0000000000000000 {{.*}} 000001 00 AG 0 0 1
# CHECK-NEXT: .text.bar PROGBITS 0000000000000000 {{.*}} 000008 00 AXG 0 0 1
# CHECK-NEXT: .rela.text.bar RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8
# CHECK-NEXT: .text.foo PROGBITS 0000000000000000 {{.*}} 000008 00 AXG [[#]] [[#]] 1
# CHECK-NEXT: .rela.text.foo RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8
# CHECK-NEXT: .note.GNU-stack
# CHECK: COMDAT group section [{{.*}}] `.group' [abc] contains 4 sections:
# CHECK: COMDAT group section [{{.*}}] `.group' [abc] contains 6 sections:
# CHECK-NEXT: Name
# CHECK-NEXT: .rodata.bar
# CHECK-NEXT: .rodata.foo
# CHECK-NEXT: .text.bar
# CHECK-NEXT: .rela.text.bar
# CHECK-NEXT: .text.foo
# CHECK-NEXT: .rela.text.foo
## Rewrite SHT_GROUP content if some members are combined.
# RUN: echo 'SECTIONS { .rodata : {*(.rodata.*)} .text : {*(.text.*)} }' > %t1.lds
# RUN: ld.lld -r -T %t1.lds %t.o %t.o -o %t1.ro
# RUN: llvm-readelf -g -S %t1.ro | FileCheck %s --check-prefix=SCRIPT1
# RUN: echo 'SECTIONS { .rodata : {*(.rodata.*)} .text : {*(.text.*)} }' > combine.lds
# RUN: ld.lld -r -T combine.lds a.o a.o -o combine.ro
# RUN: llvm-readelf -g -S combine.ro | FileCheck %s --check-prefix=COMBINE
# SCRIPT1: Name Type Address Off Size ES Flg Lk Inf Al
# SCRIPT1: .group GROUP 0000000000000000 {{.*}} 00000c 04 {{[1-9]}} [[#]] 4
# COMBINE: Name Type Address Off Size ES Flg Lk Inf Al
# COMBINE: .rodata PROGBITS 0000000000000000 {{.*}} 000002 00 AG 0 0 1
# COMBINE-NEXT: .text PROGBITS 0000000000000000 {{.*}} 000010 00 AXG 0 0 4
# COMBINE-NEXT: .group GROUP 0000000000000000 {{.*}} 000014 04 [[#]] [[#]] 4
# COMBINE-NEXT: .rela.text RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8
# COMBINE-NEXT: .rela.text RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8
# COMBINE-NEXT: .note.GNU-stack
# SCRIPT1: COMDAT group section [{{.*}}] `.group' [abc] contains 2 sections:
# SCRIPT1-NEXT: Name
# SCRIPT1-NEXT: .rodata
# SCRIPT1-NEXT: .text
# COMBINE: COMDAT group section [{{.*}}] `.group' [abc] contains 4 sections:
# COMBINE-NEXT: Name
# COMBINE-NEXT: .rodata
# COMBINE-NEXT: .text
# COMBINE-NEXT: .rela.text
# COMBINE-NEXT: .rela.text
# RUN: echo 'SECTIONS { /DISCARD/ : {*(.rodata.*)} }' > %t2.lds
# RUN: ld.lld -r -T %t2.lds %t.o %t.o -o %t2.ro
# RUN: llvm-readelf -g -S %t2.ro | FileCheck %s --check-prefix=SCRIPT2
# RUN: echo 'SECTIONS { /DISCARD/ : {*(.rodata.*)} }' > discard-rodata.lds
# RUN: ld.lld -r -T discard-rodata.lds a.o a.o -o discard-rodata.ro
# RUN: llvm-readelf -g -S discard-rodata.ro | FileCheck %s --check-prefix=NO-RODATA
## Handle discarded group members.
# SCRIPT2: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# SCRIPT2: [ 2] .group GROUP 0000000000000000 {{.*}} 00000c 04 {{[1-9]}} [[#]] 4
# NO-RODATA: Name Type Address Off Size ES Flg Lk Inf Al
# NO-RODATA: .group GROUP 0000000000000000 {{.*}} 000014 04 [[#]] [[#]] 4
# NO-RODATA-NEXT: .text.bar PROGBITS 0000000000000000 {{.*}} 000008 00 AXG 0 0 1
# NO-RODATA-NEXT: .rela.text.bar RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8
# NO-RODATA-NEXT: .text.foo PROGBITS 0000000000000000 {{.*}} 000008 00 AXG [[#]] [[#]] 1
# NO-RODATA-NEXT: .rela.text.foo RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8
# NO-RODATA-NEXT: .note.GNU-stack
# SCRIPT2: COMDAT group section [{{.*}}] `.group' [abc] contains 2 sections:
# SCRIPT2-NEXT: Name
# SCRIPT2-NEXT: .text.bar
# SCRIPT2-NEXT: .text.foo
# NO-RODATA: COMDAT group section [{{.*}}] `.group' [abc] contains 4 sections:
# NO-RODATA-NEXT: Name
# NO-RODATA-NEXT: .text.bar
# NO-RODATA-NEXT: .rela.text.bar
# NO-RODATA-NEXT: .text.foo
# NO-RODATA-NEXT: .rela.text.foo
#--- a.s
.weak abc
abc:
@ -52,6 +77,6 @@ abc:
.byte 42
.section .text.bar,"axG",@progbits,abc,comdat
.quad 42
.quad abc
.section .text.foo,"axG",@progbits,abc,comdat
.long 42
.quad abc