ab930ee7ca
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........@@....|
...
```
139 lines
5.1 KiB
Plaintext
139 lines
5.1 KiB
Plaintext
## Test that NT_FILE sections in core files are interpreted correctly.
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# RUN: yaml2obj %s -o %t.o
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# RUN: llvm-readelf --notes %t.o | FileCheck %s --check-prefix=GNU
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# RUN: llvm-readobj --notes %t.o | FileCheck %s --check-prefix=LLVM
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# RUN: llvm-readobj --elf-output-style=JSON --pretty-print --notes %t.o | FileCheck %s --check-prefix=JSON
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## llvm-mc doesn't support generating ET_CORE files; the 'Content' field was
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## generated with the following steps:
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# $ llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu tmp.s -o tmp.o
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# $ bin/llvm-objcopy --dump-section=.note.foo=tmp.txt tmp.o /dev/null
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# $ xxd -p tmp.txt | tr -d '\n'; echo
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## Using the following input:
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# .section ".note.foo", "a"
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# .align 4
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# .long 5 /* namesz */
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# .long end - begin /* descsz */
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# .long 0x46494c45 /* type = NT_FILE */
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# .asciz "CORE"
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# .align 4
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# begin:
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# .quad 3 /* 3 file mappings */
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# .quad 4096 /* page size */
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# .quad 0x1000 /* start #1 */
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# .quad 0x2000 /* end #1 */
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# .quad 0x3000 /* offset #1 */
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# .quad 0x4000 /* start #2 */
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# .quad 0x5000 /* end #2 */
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# .quad 0x6000 /* offset #2 */
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# .quad 0x7000 /* start #3 */
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# .quad 0x8000 /* end #3 */
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# .quad 0x9000 /* offset #3 */
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# .asciz "/path/to/a.out"
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# .asciz "/path/to/libc.so"
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# .asciz "[stack]"
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# .align 4
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# end:
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_CORE
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Sections:
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- Name: .note.foo
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Type: SHT_NOTE
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Content: 0500000080000000454C4946434F524500000000030000000000000000100000000000000010000000000000002000000000000000300000000000000040000000000000005000000000000000600000000000000070000000000000008000000000000000900000000000002F706174682F746F2F612E6F7574002F706174682F746F2F6C6962632E736F005B737461636B5D00
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ProgramHeaders:
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- Type: PT_NOTE
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FirstSec: .note.foo
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LastSec: .note.foo
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# GNU: Displaying notes found
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# GNU-NEXT: Owner Data size Description
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# GNU-NEXT: CORE 0x00000080 NT_FILE (mapped files)
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# GNU-NEXT: Page size: 4096
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# GNU-NEXT: Start End Page Offset
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# GNU-NEXT: 0x0000000000001000 0x0000000000002000 0x0000000000003000
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# GNU-NEXT: /path/to/a.out
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# GNU-NEXT: 0x0000000000004000 0x0000000000005000 0x0000000000006000
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# GNU-NEXT: /path/to/libc.so
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# GNU-NEXT: 0x0000000000007000 0x0000000000008000 0x0000000000009000
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# GNU-NEXT: [stack]
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# GNU-EMPTY:
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# LLVM: NoteSections [
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# LLVM-NEXT: NoteSection {
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# LLVM-NEXT: Name: <?>
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# LLVM-NEXT: Offset:
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# LLVM-NEXT: Size:
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# LLVM-NEXT: Notes [
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# LLVM-NEXT: {
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# LLVM-NEXT: Owner: CORE
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# LLVM-NEXT: Data size: 0x80
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# LLVM-NEXT: Type: NT_FILE (mapped files)
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# LLVM-NEXT: Page Size: 4096
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# LLVM-NEXT: Mappings [
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# LLVM-NEXT: {
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# LLVM-NEXT: Start: 0x1000
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# LLVM-NEXT: End: 0x2000
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# LLVM-NEXT: Offset: 0x3000
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# LLVM-NEXT: Filename: /path/to/a.out
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# LLVM-NEXT: }
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# LLVM-NEXT: {
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# LLVM-NEXT: Start: 0x4000
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# LLVM-NEXT: End: 0x5000
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# LLVM-NEXT: Offset: 0x6000
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# LLVM-NEXT: Filename: /path/to/libc.so
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# LLVM-NEXT: }
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# LLVM-NEXT: {
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# LLVM-NEXT: Start: 0x7000
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# LLVM-NEXT: End: 0x8000
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# LLVM-NEXT: Offset: 0x9000
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# LLVM-NEXT: Filename: [stack]
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# LLVM-NEXT: }
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# LLVM-NEXT: ]
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# LLVM-NEXT: }
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# LLVM-NEXT: ]
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# LLVM-NEXT: }
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# LLVM-NEXT: ]
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# JSON: "NoteSections": [
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# JSON-NEXT: {
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# JSON-NEXT: "NoteSection": {
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# JSON-NEXT: "Name": "<?>",
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# JSON-NEXT: "Offset": 120,
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# JSON-NEXT: "Size": 148,
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# JSON-NEXT: "Notes": [
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# JSON-NEXT: {
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# JSON-NEXT: "Owner": "CORE",
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# JSON-NEXT: "Data size": 128,
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# JSON-NEXT: "Type": "NT_FILE (mapped files)",
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# JSON-NEXT: "Page Size": 4096,
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# JSON-NEXT: "Mappings": [
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# JSON-NEXT: {
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# JSON-NEXT: "Start": 4096,
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# JSON-NEXT: "End": 8192,
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# JSON-NEXT: "Offset": 12288,
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# JSON-NEXT: "Filename": "/path/to/a.out"
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# JSON-NEXT: },
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# JSON-NEXT: {
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# JSON-NEXT: "Start": 16384,
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# JSON-NEXT: "End": 20480,
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# JSON-NEXT: "Offset": 24576,
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# JSON-NEXT: "Filename": "/path/to/libc.so"
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# JSON-NEXT: },
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# JSON-NEXT: {
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# JSON-NEXT: "Start": 28672,
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# JSON-NEXT: "End": 32768,
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# JSON-NEXT: "Offset": 36864,
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# JSON-NEXT: "Filename": "[stack]"
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# JSON-NEXT: }
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# JSON-NEXT: ]
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# JSON-NEXT: }
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# JSON-NEXT: ]
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# JSON-NEXT: }
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# JSON-NEXT: }
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# JSON-NEXT: ]
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