1# REQUIRES: x86 2## Test that SHT_GROUP sections are retained in relocatable output. The content 3## may be rewritten because group members may change their indices. Additionally, 4## group member may be combined or discarded (e.g. /DISCARD/ or --gc-sections). 5 6# RUN: rm -rf %t && split-file %s %t && cd %t 7# RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o 8# RUN: ld.lld -r a.o a.o -o a.ro 9# RUN: llvm-readelf -g -S a.ro | FileCheck %s 10 11# CHECK: Name Type Address Off Size ES Flg Lk Inf Al 12# CHECK: .group GROUP 0000000000000000 {{.*}} 00001c 04 [[#]] [[#]] 4 13# CHECK-NEXT: .rodata.bar PROGBITS 0000000000000000 {{.*}} 000001 00 AG 0 0 1 14# CHECK-NEXT: .rodata.foo PROGBITS 0000000000000000 {{.*}} 000001 00 AG 0 0 1 15# CHECK-NEXT: .text.bar PROGBITS 0000000000000000 {{.*}} 000008 00 AXG 0 0 1 16# CHECK-NEXT: .rela.text.bar RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8 17# CHECK-NEXT: .text.foo PROGBITS 0000000000000000 {{.*}} 000008 00 AXG [[#]] [[#]] 1 18# CHECK-NEXT: .rela.text.foo RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8 19# CHECK-NEXT: .note.GNU-stack 20 21# CHECK: COMDAT group section [{{.*}}] `.group' [abc] contains 6 sections: 22# CHECK-NEXT: Name 23# CHECK-NEXT: .rodata.bar 24# CHECK-NEXT: .rodata.foo 25# CHECK-NEXT: .text.bar 26# CHECK-NEXT: .rela.text.bar 27# CHECK-NEXT: .text.foo 28# CHECK-NEXT: .rela.text.foo 29 30## Rewrite SHT_GROUP content if some members are combined. 31# RUN: echo 'SECTIONS { .rodata : {*(.rodata.*)} .text : {*(.text.*)} }' > combine.lds 32# RUN: ld.lld -r -T combine.lds a.o a.o -o combine.ro 33# RUN: llvm-readelf -g -S combine.ro | FileCheck %s --check-prefix=COMBINE 34 35# COMBINE: Name Type Address Off Size ES Flg Lk Inf Al 36# COMBINE: .rodata PROGBITS 0000000000000000 {{.*}} 000002 00 AG 0 0 1 37# COMBINE-NEXT: .text PROGBITS 0000000000000000 {{.*}} 000010 00 AXG 0 0 4 38# COMBINE-NEXT: .group GROUP 0000000000000000 {{.*}} 000014 04 [[#]] [[#]] 4 39# COMBINE-NEXT: .rela.text RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8 40# COMBINE-NEXT: .rela.text RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8 41# COMBINE-NEXT: .note.GNU-stack 42 43# COMBINE: COMDAT group section [{{.*}}] `.group' [abc] contains 4 sections: 44# COMBINE-NEXT: Name 45# COMBINE-NEXT: .rodata 46# COMBINE-NEXT: .text 47# COMBINE-NEXT: .rela.text 48# COMBINE-NEXT: .rela.text 49 50## If --force-group-allocation is specified, discard .group and combine .rela.* if their relocated sections are combined. 51# RUN: ld.lld -r -T combine.lds a.o a.o --force-group-allocation -o combine-a.ro 52# RUN: llvm-readelf -g -S combine-a.ro | FileCheck %s --check-prefix=COMBINE-A 53 54# COMBINE-A: Name Type Address Off Size ES Flg Lk Inf Al 55# COMBINE-A: .rodata PROGBITS 0000000000000000 {{.*}} 000002 00 A 0 0 1 56# COMBINE-A-NEXT: .text PROGBITS 0000000000000000 {{.*}} 000010 00 AX 0 0 4 57# COMBINE-A-NEXT: .rela.text RELA 0000000000000000 {{.*}} 000030 18 I [[#]] [[#]] 8 58# COMBINE-A-NEXT: .note.GNU-stack 59 60# RUN: echo 'SECTIONS { /DISCARD/ : {*(.rodata.*)} }' > discard-rodata.lds 61# RUN: ld.lld -r -T discard-rodata.lds a.o a.o -o discard-rodata.ro 62# RUN: llvm-readelf -g -S discard-rodata.ro | FileCheck %s --check-prefix=NO-RODATA 63 64## Handle discarded group members. 65# NO-RODATA: Name Type Address Off Size ES Flg Lk Inf Al 66# NO-RODATA: .group GROUP 0000000000000000 {{.*}} 000014 04 [[#]] [[#]] 4 67# NO-RODATA-NEXT: .text.bar PROGBITS 0000000000000000 {{.*}} 000008 00 AXG 0 0 1 68# NO-RODATA-NEXT: .rela.text.bar RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8 69# NO-RODATA-NEXT: .text.foo PROGBITS 0000000000000000 {{.*}} 000008 00 AXG [[#]] [[#]] 1 70# NO-RODATA-NEXT: .rela.text.foo RELA 0000000000000000 {{.*}} 000018 18 IG [[#]] [[#]] 8 71# NO-RODATA-NEXT: .note.GNU-stack 72 73# NO-RODATA: COMDAT group section [{{.*}}] `.group' [abc] contains 4 sections: 74# NO-RODATA-NEXT: Name 75# NO-RODATA-NEXT: .text.bar 76# NO-RODATA-NEXT: .rela.text.bar 77# NO-RODATA-NEXT: .text.foo 78# NO-RODATA-NEXT: .rela.text.foo 79 80#--- a.s 81.weak abc 82abc: 83 84.section .rodata.bar,"aG",@progbits,abc,comdat 85.byte 42 86.section .rodata.foo,"aG",@progbits,abc,comdat 87.byte 42 88 89.section .text.bar,"axG",@progbits,abc,comdat 90.quad abc 91.section .text.foo,"axG",@progbits,abc,comdat 92.quad abc 93