[Bug ld/23658] Improve PT_NOTE segment creation

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=23658

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
It isn't right for -shared:

/export/build/gnu/binutils/build-x86_64-linux/ld/../gas/as-new  --defsym
ALIGN=3 -mx86-used-note=no   -o tmpdir/pr23658-1a.o
/export/gnu/import/git/sources/binutils-gdb/ld/testsuite/ld-elf/pr23658-1a.s
/export/build/gnu/binutils/build-x86_64-linux/ld/../gas/as-new  --defsym
ALIGN=3 -mx86-used-note=no   -o tmpdir/pr23658-1b.o
/export/gnu/import/git/sources/binutils-gdb/ld/testsuite/ld-elf/pr23658-1b.s
/export/build/gnu/binutils/build-x86_64-linux/ld/../gas/as-new  --defsym
ALIGN=3 -mx86-used-note=no   -o tmpdir/pr23658-1c.o
/export/gnu/import/git/sources/binutils-gdb/ld/testsuite/ld-elf/pr23658-1c.s
/export/build/gnu/binutils/build-x86_64-linux/ld/../gas/as-new  --defsym
ALIGN=3 -mx86-used-note=no   -o tmpdir/pr23658-1d.o
/export/gnu/import/git/sources/binutils-gdb/ld/testsuite/ld-elf/pr23658-1d.s
/export/build/gnu/binutils/build-x86_64-linux/ld/../gas/as-new  --defsym
ALIGN=3 -mx86-used-note=no   -o tmpdir/start.o
/export/gnu/import/git/sources/binutils-gdb/ld/testsuite/ld-elf/start.s
./ld-new -z norelro 
-L/export/gnu/import/git/sources/binutils-gdb/ld/testsuite/ld-elf  --build-id
-shared -o tmpdir/dump tmpdir/pr23658-1a.o tmpdir/pr23658-1b.o
tmpdir/pr23658-1c.o tmpdir/pr23658-1d.o tmpdir/start.o 
/export/build/gnu/binutils/build-x86_64-linux/ld/../binutils/readelf -S  -l
--wide tmpdir/dump
There are 16 section headers, starting at offset 0x2550:

Section Headers:
  [Nr] Name              Type            Address          Off    Size   ES Flg
Lk Inf Al
  [ 0]                   NULL            0000000000000000 000000 000000 00     
0   0  0
  [ 1] .note.4           NOTE            0000000000002000 002000 000028 00   A 
0   0  8
  [ 2] .note.1           NOTE            0000000000002028 002028 000028 00   A 
0   0  8
  [ 3] .note.gnu.build-id NOTE            0000000000000200 000200 000024 00   A
 0   0  4
  [ 4] .note.2           NOTE            0000000000002050 002050 000028 00   A 
0   0  4
  [ 5] .note.3           NOTE            0000000000002078 002078 000028 00   A 
0   0  4
  [ 6] .hash             HASH            0000000000000228 000228 000030 04   A 
8   0  8
  [ 7] .gnu.hash         GNU_HASH        0000000000000258 000258 00003c 00   A 
8   0  8
  [ 8] .dynsym           DYNSYM          0000000000000298 000298 0000a8 18   A 
9   1  8
  [ 9] .dynstr           STRTAB          0000000000000340 000340 000013 00   A 
0   0  1
  [10] .text             PROGBITS        0000000000001000 001000 000010 00  AX 
0   0  1
  [11] .eh_frame         PROGBITS        00000000000020a0 0020a0 000000 00   A 
0   0  8
  [12] .dynamic          DYNAMIC         00000000000030a0 0020a0 0000c0 10  WA 
9   0  8
  [13] .symtab           SYMTAB          0000000000000000 002160 0002e8 18    
14  25  8
  [14] .strtab           STRTAB          0000000000000000 002448 000081 00     
0   0  1
  [15] .shstrtab         STRTAB          0000000000000000 0024c9 000081 00     
0   0  1
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
  L (link order), O (extra OS processing required), G (group), T (TLS),
  C (compressed), x (unknown), o (OS specific), E (exclude),
  l (large), p (processor specific)

Elf file type is DYN (Shared object file)
Entry point 0x1008
There are 8 program headers, starting at offset 64

Program Headers:
  Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz
  Flg Align
  LOAD           0x000000 0x0000000000000000 0x0000000000000000 0x000353
0x000353 R   0x1000
  LOAD           0x001000 0x0000000000001000 0x0000000000001000 0x000010
0x000010 R E 0x1000
  LOAD           0x002000 0x0000000000002000 0x0000000000002000 0x0000a0
0x0000a0 R   0x1000
  LOAD           0x0020a0 0x00000000000030a0 0x00000000000030a0 0x0000c0
0x0000c0 RW  0x1000
  DYNAMIC        0x0020a0 0x00000000000030a0 0x00000000000030a0 0x0000c0
0x0000c0 RW  0x8
  NOTE           0x002000 0x0000000000002000 0x0000000000002000 0x000050
0x000050 R   0x8
  NOTE           0x000200 0x0000000000000200 0x0000000000000200 0x000024
0x000024 R   0x4
  NOTE           0x002050 0x0000000000002050 0x0000000000002050 0x000050
0x000050 R   0x4

 Section to Segment mapping:
  Segment Sections...
   00     .note.gnu.build-id .hash .gnu.hash .dynsym .dynstr 
   01     .text 
   02     .note.4 .note.1 .note.2 .note.3 
   03     .dynamic 
   04     .dynamic 
   05     .note.4 .note.1 
   06     .note.gnu.build-id 
   07     .note.2 .note.3

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