| # 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 |