llvm-project/lld/test/ELF/gnu-property-align-32.s
Fred Grim ab930ee7ca
[llvm-readobj][ELF] Alter JSON/LLVM output on note sections to allow for multiple notes per section in JSON (#96813)
It turns out that the notes section for corefiles (or really any elf
file with multiple notes) is set up in such a way for LLVM formatted
output that the JSON equivalent only has the last note since the notes
are held in a dictionary with every key being Note. This pr alters the
layout for the notes to a list of dictionaries to sidestep this issue
for JSON output. Prior to this pr a note section in the output looked
like (for LLVM output):

```
Notes [
  NoteSection {
    Name: <?>
    Offset: 0x2148
    Size: 0x1F864
    Note {
      Owner: CORE
      Data size: 0x150
      Type: NT_PRSTATUS (prstatus structure)
      Description data (
        0000: 06000000 00000000 00000000 06000000  |................|
        ...
      )
    }
    Note {
      Owner: CORE
      Data size: 0x88
      Type: NT_PRPSINFO (prpsinfo structure)
      Description data (
        0000: 02440000 00000000 04054040 00000000  |.D........@@....|
	....
```

But is now:

```
NoteSections [
  NoteSection {
    Name: <?>
    Offset: 0x2148
    Size: 0x1F864
    Notes [
      {
        Owner: CORE
        Data size: 0x150
        Type: NT_PRSTATUS (prstatus structure)
        Description data (
          0000: 06000000 00000000 00000000 06000000  |................|
          ...
        )
      }
      {
        Owner: CORE
        Data size: 0x88
        Type: NT_PRPSINFO (prpsinfo structure)
        Description data (
          0000: 02440000 00000000 04054040 00000000  |.D........@@....|
	  ...
```
2024-07-03 09:19:18 -07:00

43 lines
1022 B
ArmAsm

# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=i686-linux-gnu %s -o %t.o
# RUN: ld.lld %t.o -o %t
# RUN: llvm-readobj --sections -n %t | FileCheck %s
## Check that .note.gnu.property has alignment 4 and is readable by llvm-readobj
# CHECK: Name: .note.gnu.property
# CHECK-NEXT: Type: SHT_NOTE (0x7)
# CHECK-NEXT: Flags [ (0x2)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x4000F4
# CHECK-NEXT: Offset: 0xF4
# CHECK-NEXT: Size: 28
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK: Size: 0x1C
# CHECK-NEXT: Notes [
# CHECK-NEXT: {
# CHECK-NEXT: Owner: GNU
# CHECK-NEXT: Data size: 0xC
# CHECK-NEXT: Type: NT_GNU_PROPERTY_TYPE_0 (property note)
# CHECK-NEXT: Property [
# CHECK-NEXT: x86 feature: IBT
.section ".note.gnu.property", "a"
.p2align 2
.long 4
.long 0xc
.long 0x5
.asciz "GNU"
.p2align 2
.long 0xc0000002 # GNU_PROPERTY_X86_FEATURE_1_AND
.long 4
.long 1 # GNU_PROPERTY_X86_FEATURE_1_IBT
.text
.globl _start
ret