bash-3.2$ cat note-2.s
.globl _entry
.text
_entry:
.byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
.section .foo,"awx",%progbits
.byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
.section .note,"",%note
.byte 0
bash-3.2$ cat note-2.t
ENTRY(_entry)
PHDRS
{
data PT_LOAD;
note PT_NOTE;
}
SECTIONS
{
. = 0x1000000;
.text : { *(.text) } :data
.foo : { *(.foo) } :data
. = 0x2000000;
.note : { *(.note) } :note
/DISCARD/ : { *(*) }
}
bash-3.2$ make
cc -c note-2.s
./ld -Tnote-2.t -o note-2 note-2.o
./strip -R .foo note-2 -o note-2.strip
readelf -Sl note-2
There are 7 section headers, starting at offset 0x200050:
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .text PROGBITS 0000000001000000 00200000
0000000000000010 0000000000000000 AX 0 0 4
[ 2] .foo PROGBITS 0000000001000010 00200010
0000000000000010 0000000000000000 WAX 0 0 1
[ 3] .note NOTE 0000000002000000 00200020
0000000000000001 0000000000000000 0 0 1
[ 4] .shstrtab STRTAB 0000000000000000 00200021
000000000000002c 0000000000000000 0 0 1
[ 5] .symtab SYMTAB 0000000000000000 00200210
0000000000000078 0000000000000018 6 4 8
[ 6] .strtab STRTAB 0000000000000000 00200288
0000000000000008 0000000000000000 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings)
I (info), L (link order), G (group), x (unknown)
O (extra OS processing required) o (OS specific), p (processor specific)
Elf file type is EXEC (Executable file)
Entry point 0x1000000
There are 2 program headers, starting at offset 64
Program Headers:
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
LOAD 0x0000000000200000 0x0000000001000000 0x0000000001000000
0x0000000000000020 0x0000000000000020 RWE 200000
NOTE 0x0000000000200020 0x0000000002000000 0x0000000002000000
0x0000000000000001 0x0000000000000000 R 1
Section to Segment mapping:
Segment Sections...
00 .text .foo
01 .note
readelf -Sl note-2.strip
There are 4 section headers, starting at offset 0x200028:
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .text PROGBITS 0000000001000000 00200000
0000000000000010 0000000000000000 AX 0 0 4
[ 2] .note NOTE 0000000002000000 00200010
0000000000000001 0000000000000000 0 0 1
[ 3] .shstrtab STRTAB 0000000000000000 00200011
0000000000000017 0000000000000000 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings)
I (info), L (link order), G (group), x (unknown)
O (extra OS processing required) o (OS specific), p (processor specific)
Elf file type is EXEC (Executable file)
Entry point 0x1000000
There are 2 program headers, starting at offset 64
Program Headers:
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
LOAD 0x0000000000200000 0x0000000001000000 0x0000000001000000
0x0000000000000010 0x0000000000000010 RWE 200000
NOTE 0x0000000000000000 0x0000000000000000 0x0000000002000000
0x0000000000000000 0x0000000000000000 R 8
Section to Segment mapping:
Segment Sections...
00 .text
01
bash-3.2$
As you can see, PT_NOTE segment becomes empty after strip.
--
Summary: strip doesn't handle PT_NOTE segment properly
Product: binutils
Version: 2.19 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: binutils
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: hjl at lucon dot org
CC: bug-binutils at gnu dot org
http://sourceware.org/bugzilla/show_bug.cgi?id=5488
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