https://sourceware.org/bugzilla/show_bug.cgi?id=32191
Bug ID: 32191
Summary: --rosegment places .note.gnu.property in executable
PT_LOAD segment for -z separate-code
Product: binutils
Version: 2.44 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
[hjl@gnu-tgl-3 tmp]$ cat x.c
int
main ()
{
}
[hjl@gnu-tgl-3 tmp]$ gcc x.c -fPIC -shared -Wl,-z,separate-code
-Wl,--no-rosegment
[hjl@gnu-tgl-3 tmp]$ readelf -lW a.out
Elf file type is DYN (Shared object file)
Entry point 0x0
There are 11 program headers, starting at offset 64
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz
Flg Align
LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x000518
0x000518 R 0x1000
LOAD 0x001000 0x0000000000001000 0x0000000000001000 0x000111
0x000111 R E 0x1000
LOAD 0x002000 0x0000000000002000 0x0000000000002000 0x0000a4
0x0000a4 R 0x1000
LOAD 0x002df0 0x0000000000003df0 0x0000000000003df0 0x000210
0x000218 RW 0x1000
DYNAMIC 0x002e08 0x0000000000003e08 0x0000000000003e08 0x0001c0
0x0001c0 RW 0x8
NOTE 0x0002a8 0x00000000000002a8 0x00000000000002a8 0x000030
0x000030 R 0x8
NOTE 0x0002d8 0x00000000000002d8 0x00000000000002d8 0x000024
0x000024 R 0x4
GNU_PROPERTY 0x0002a8 0x00000000000002a8 0x00000000000002a8 0x000030
0x000030 R 0x8
GNU_EH_FRAME 0x002000 0x0000000000002000 0x0000000000002000 0x000024
0x000024 R 0x4
GNU_STACK 0x000000 0x0000000000000000 0x0000000000000000 0x000000
0x000000 RW 0x10
GNU_RELRO 0x002df0 0x0000000000003df0 0x0000000000003df0 0x000210
0x000210 R 0x1
Section to Segment mapping:
Segment Sections...
00 .note.gnu.property .note.gnu.build-id .gnu.hash .dynsym .dynstr
.gnu.version .gnu.version_r .rela.dyn
01 .init .plt .plt.got .text .fini
02 .eh_frame_hdr .eh_frame
03 .init_array .fini_array .data.rel.ro .dynamic .got .got.plt .bss
04 .dynamic
05 .note.gnu.property
06 .note.gnu.build-id
07 .note.gnu.property
08 .eh_frame_hdr
09
10 .init_array .fini_array .data.rel.ro .dynamic .got .got.plt
[hjl@gnu-tgl-3 tmp]$ gcc x.c -fPIC -shared -Wl,-z,separate-code -Wl,--rosegment
[hjl@gnu-tgl-3 tmp]$ readelf -lW a.out
Elf file type is DYN (Shared object file)
Entry point 0x0
There are 10 program headers, starting at offset 64
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz
Flg Align
LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x001148
0x001148 R E 0x1000
LOAD 0x002000 0x0000000000002000 0x0000000000002000 0x0002e4
0x0002e4 R 0x1000
LOAD 0x002df0 0x0000000000003df0 0x0000000000003df0 0x000210
0x000218 RW 0x1000
DYNAMIC 0x002e08 0x0000000000003e08 0x0000000000003e08 0x0001c0
0x0001c0 RW 0x8
NOTE 0x001118 0x0000000000001118 0x0000000000001118 0x000030
0x000030 R 0x8
NOTE 0x002000 0x0000000000002000 0x0000000000002000 0x000024
0x000024 R 0x4
GNU_PROPERTY 0x001118 0x0000000000001118 0x0000000000001118 0x000030
0x000030 R 0x8
GNU_EH_FRAME 0x002240 0x0000000000002240 0x0000000000002240 0x000024
0x000024 R 0x4
GNU_STACK 0x000000 0x0000000000000000 0x0000000000000000 0x000000
0x000000 RW 0x10
GNU_RELRO 0x002df0 0x0000000000003df0 0x0000000000003df0 0x000210
0x000210 R 0x1
Section to Segment mapping:
Segment Sections...
00 .init .plt .plt.got .text .fini .note.gnu.property
01 .note.gnu.build-id .gnu.hash .dynsym .dynstr .gnu.version
.gnu.version_r .rela.dyn .eh_frame_hdr .eh_frame
02 .init_array .fini_array .data.rel.ro .dynamic .got .got.plt .bss
03 .dynamic
04 .note.gnu.property
05 .note.gnu.build-id
06 .note.gnu.property
07 .eh_frame_hdr
08
09 .init_array .fini_array .data.rel.ro .dynamic .got .got.plt
[hjl@gnu-tgl-3 tmp]$
.note.gnu.property shouldn't be in the same segment as .text section.
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