llvm-project/lld/test/ELF/partition-notes.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

69 lines
1.8 KiB
ArmAsm

// Test that notes (both from object files and synthetic) are duplicated into
// each partition.
// REQUIRES: x86
// RUN: llvm-mc %s -o %t.o -filetype=obj --triple=x86_64-unknown-linux
// RUN: ld.lld %t.o -o %t --shared --gc-sections --build-id=sha1
// RUN: llvm-objcopy --extract-main-partition %t %t0
// RUN: llvm-objcopy --extract-partition=part1 %t %t1
// RUN: llvm-readobj --all %t0 | FileCheck %s
// RUN: llvm-readobj --all %t1 | FileCheck %s
// CHECK: Type: PT_NOTE
// CHECK-NEXT: Offset: 0x{{0*}}[[NOTE_OFFSET:[^ ]*]]
// CHECK: NoteSections [
// CHECK-NEXT: NoteSection {
// CHECK-NEXT: Name: .note.obj
// CHECK-NEXT: Offset: 0x{{0*}}[[NOTE_OFFSET]]
// CHECK-NEXT: Size:
// CHECK-NEXT: Notes [
// CHECK-NEXT: {
// CHECK-NEXT: Owner: foo
// CHECK-NEXT: Data size: 0x4
// CHECK-NEXT: Type: NT_VERSION (version)
// CHECK-NEXT: Description data (
// CHECK-NEXT: 0000: 62617200 |bar.|
// CHECK-NEXT: )
// CHECK-NEXT: }
// CHECK-NEXT: ]
// CHECK-NEXT: }
// CHECK-NEXT: NoteSection {
// CHECK-NEXT: Name: .note.gnu.build-id
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size:
// CHECK-NEXT: Notes [
// CHECK-NEXT: {
// CHECK-NEXT: Owner: GNU
// CHECK-NEXT: Data size:
// CHECK-NEXT: Type: NT_GNU_BUILD_ID (unique build ID bitstring)
// CHECK-NEXT: Build ID: d5101cb9d03b7e836ba9b64f5768a0b31980920f{{$}}
// CHECK-NEXT: }
// CHECK-NEXT: ]
// CHECK-NEXT: }
// CHECK-NEXT: ]
.section .llvm_sympart,"",@llvm_sympart
.asciz "part1"
.quad p1
.section .data.p0,"aw",@progbits
.globl p0
p0:
.section .data.p1,"aw",@progbits
.globl p1
p1:
.section .note.obj,"a",@note
.align 4
.long 2f-1f
.long 3f-2f
.long 1
1: .asciz "foo"
2: .asciz "bar"
3: