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llvm-mirror/test/MC/ELF/section.s
Peter Collingbourne dd1ef1f341 Add IR support, ELF section and user documentation for partitioning feature.
The partitioning feature was proposed here:
http://lists.llvm.org/pipermail/llvm-dev/2019-February/130583.html

This is mostly just documentation. The feature itself will be contributed
in subsequent patches.

Differential Revision: https://reviews.llvm.org/D60242

llvm-svn: 361923
2019-05-29 03:29:01 +00:00

321 lines
8.4 KiB
ArmAsm

// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -S | FileCheck %s
// RUN: llvm-mc -filetype=asm -triple x86_64-pc-linux-gnu %s -o - | FileCheck %s --check-prefix=ASM
// Test that these names are accepted.
.section .note.GNU-stack,"",@progbits
.section .note.GNU-stack2,"",%progbits
.section .note.GNU-,"",@progbits
.section -.note.GNU,"","progbits"
.section src/stack.c,"",@progbits
.section ~!@$%^&*()_-+={[}]|\\:<>,"",@progbits
// CHECK: Name: .note.GNU-stack
// CHECK: Name: .note.GNU-stack2
// CHECK: Name: .note.GNU-
// CHECK: Name: -.note.GNU
// CHECK: Name: src/stack.c
// CHECK: Name: ~!@$%^&*()_-+={[}]|\\:<>
// Test that the defaults are used
.section .init
.section .fini
.section .rodata
.section zed, ""
// CHECK: Section {
// CHECK: Name: .init
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 1
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// CHECK-NEXT: Section {
// CHECK-NEXT: Index:
// CHECK-NEXT: Name: .fini
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 1
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// CHECK-NEXT: Section {
// CHECK-NEXT: Index:
// CHECK-NEXT: Name: .rodata
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 1
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// CHECK-NEXT: Section {
// CHECK-NEXT: Index:
// CHECK-NEXT: Name: zed
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 1
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
.section .note.test,"",@note
// CHECK: Section {
// CHECK: Name: .note.test
// CHECK-NEXT: Type: SHT_NOTE
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 1
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// Test that we can parse these
foo:
bar:
.section .text.foo,"axG",@progbits,foo,comdat
.section .text.bar,"axMG",@progbits,42,bar,comdat
// Test that the default values are not used
.section .eh_frame,"a",@unwind
// CHECK: Section {
// CHECK: Name: .eh_frame
// CHECK-NEXT: Type: SHT_X86_64_UNWIND
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 1
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
.section .excluded,"e",@progbits
// CHECK: Section {
// CHECK: Name: .excluded
// CHECK-NEXT: Type: SHT_PROGBITS (0x1)
// CHECK-NEXT: Flags [ (0x80000000)
// CHECK-NEXT: SHF_EXCLUDE (0x80000000)
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 1
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// Test that we handle the strings like gas
.section bar-"foo"
.section "fooo"
// CHECK: Section {
// CHECK: Name: bar-"foo"
// CHECK: Section {
// CHECK: Name: fooo
// Test SHF_LINK_ORDER
.section .shf_metadata_target1, "a"
.quad 0
.section .shf_metadata_target2, "a", @progbits, unique, 1
.Lshf_metadata_target2_1:
.quad 0
.section .shf_metadata_target2, "a", @progbits, unique, 2
.Lshf_metadata_target2_2:
.quad 0
.section .shf_metadata1,"ao",@progbits,.Lshf_metadata_target2_1
.section .shf_metadata2,"ao",@progbits,.Lshf_metadata_target2_2
.section .shf_metadata3,"ao",@progbits,.shf_metadata_target1
// ASM: .section .shf_metadata1,"ao",@progbits,.Lshf_metadata_target2_1
// ASM: .section .shf_metadata2,"ao",@progbits,.Lshf_metadata_target2_2
// ASM: .section .shf_metadata3,"ao",@progbits,.shf_metadata_target1
// CHECK: Section {
// CHECK: Index: 22
// CHECK-NEXT: Name: .shf_metadata_target1
// CHECK: Section {
// CHECK: Index: 23
// CHECK-NEXT: Name: .shf_metadata_target2
// CHECK: Section {
// CHECK: Index: 24
// CHECK-NEXT: Name: .shf_metadata_target2
// CHECK: Section {
// CHECK: Name: .shf_metadata1
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_LINK_ORDER
// CHECK-NEXT: ]
// CHECK-NEXT: Address:
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size:
// CHECK-NEXT: Link: 23
// CHECK-NEXT: Info: 0
// CHECK: Section {
// CHECK: Name: .shf_metadata2
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_LINK_ORDER
// CHECK-NEXT: ]
// CHECK-NEXT: Address:
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size:
// CHECK-NEXT: Link: 24
// CHECK-NEXT: Info: 0
// CHECK: Section {
// CHECK: Name: .shf_metadata3
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_LINK_ORDER
// CHECK-NEXT: ]
// CHECK-NEXT: Address:
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size:
// CHECK-NEXT: Link: 22
// CHECK-NEXT: Info: 0
.section .text.foo
// CHECK: Section {
// CHECK: Name: .text.foo
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
.section .bss
// CHECK: Section {
// CHECK: Name: .bss
// CHECK-NEXT: Type: SHT_NOBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
.section .bss.foo
// CHECK: Section {
// CHECK: Name: .bss.foo
// CHECK-NEXT: Type: SHT_NOBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
.section .tbss
// CHECK: Section {
// CHECK: Name: .tbss
// CHECK-NEXT: Type: SHT_NOBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_TLS
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
.section .tbss.foo
// CHECK: Section {
// CHECK: Name: .tbss.foo
// CHECK-NEXT: Type: SHT_NOBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_TLS
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// Test SHT_LLVM_ODRTAB
.section .odrtab,"e",@llvm_odrtab
// ASM: .section .odrtab,"e",@llvm_odrtab
// CHECK: Section {
// CHECK: Name: .odrtab
// CHECK-NEXT: Type: SHT_LLVM_ODRTAB
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_EXCLUDE
// CHECK-NEXT: ]
// Test SHT_LLVM_LINKER_OPTIONS
.section ".linker-options","e",@llvm_linker_options
// ASM: .section ".linker-options","e",@llvm_linker_options
// CHECK: Section {
// CHECK: Name: .linker-options
// CHECK-NEXT: Type: SHT_LLVM_LINKER_OPTIONS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_EXCLUDE
// CHECK-NEXT: ]
// CHECK: }
// Test SHT_LLVM_DEPENDENT_LIBRARIES
.section .deplibs,"MS",@llvm_dependent_libraries,1
// ASM: .section .deplibs,"MS",@llvm_dependent_libraries,1
// CHECK: Section {
// CHECK: Name: .deplibs
// CHECK-NEXT: Type: SHT_LLVM_DEPENDENT_LIBRARIES
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_MERGE
// CHECK-NEXT: SHF_STRINGS
// CHECK-NEXT: ]
// CHECK: }
// Test SHT_LLVM_SYMPART
.section .llvm_sympart,"",@llvm_sympart
// ASM: .section .llvm_sympart,"",@llvm_sympart
// CHECK: Section {
// CHECK: Name: .llvm_sympart
// CHECK-NEXT: Type: SHT_LLVM_SYMPART
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK: }