[Bug ld/31216] On aarch64 several sections are unnecessarily mapped to segment with executable rights

[marcin.godlewski at onet dot pl]

https://sourceware.org/bugzilla/show_bug.cgi?id=31216

--- Comment #6 from Marcin Godlewski <marcin.godlewski at onet dot pl> ---
Just wanted to correct myself, not to mislead anyone reading. With lld, by
default, although executable sections are mapped to a separate segment, the
executable segment mapping may still contain content of adjacent sections in
runtime as they share the page-sized chunk of the executable file. In order to
avoid this, -zseparate-code is required, similarly as for GNU ld.

Program Headers:
  Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz
  Flg Align
  PHDR           0x000040 0x0000000000000040 0x0000000000000040 0x000268
0x000268 R   0x8
  INTERP         0x0002a8 0x00000000000002a8 0x00000000000002a8 0x00001b
0x00001b R   0x1
      [Requesting program interpreter: /lib/ld-linux-aarch64.so.1]
  LOAD           0x000000 0x0000000000000000 0x0000000000000000 0x000704
0x000704 R   0x10000
  LOAD           0x010000 0x0000000000010000 0x0000000000010000 0x0001d0
0x0001d0 R E 0x10000
  LOAD           0x020000 0x0000000000020000 0x0000000000020000 0x000228
0x000228 RW  0x10000
  LOAD           0x020228 0x0000000000030228 0x0000000000030228 0x000010
0x000011 RW  0x10000
  DYNAMIC        0x020010 0x0000000000020010 0x0000000000020010 0x0001b0
0x0001b0 RW  0x8
  GNU_RELRO      0x020000 0x0000000000020000 0x0000000000020000 0x000228
0x001000 R   0x1
  GNU_EH_FRAME   0x0005f8 0x00000000000005f8 0x00000000000005f8 0x00003c
0x00003c R   0x4
  GNU_STACK      0x000000 0x0000000000000000 0x0000000000000000 0x000000
0x000000 RW  0
  NOTE           0x0002c4 0x00000000000002c4 0x00000000000002c4 0x000038
0x000038 R   0x4

 Section to Segment mapping:
  Segment Sections...
   00     
   01     .interp 
   02     .interp .note.ABI-tag .note.gnu.build-id .dynsym .gnu.version
.gnu.version_r .gnu.hash .dynstr .rela.dyn .rela.plt .rodata .eh_frame_hdr
.eh_frame 
   03     .text .init .fini .plt 
   04     .fini_array .init_array .dynamic .got .got.plt 
   05     .data .bss 
   06     .dynamic 
   07     .fini_array .init_array .dynamic .got .got.plt 
   08     .eh_frame_hdr 
   09     
   10     .note.ABI-tag .note.gnu.build-id

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