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bug#9927: unexec/unexmacosx fails with GCC 4.6.1 on intel Mac OS X 10.6.

From: Peter Dyballa
Subject: bug#9927: unexec/unexmacosx fails with GCC 4.6.1 on intel Mac OS X 10.6.8
Date: Thu, 17 May 2012 21:12:12 +0200 
Is this the information you want? Produced with GCC 4.7.0.


src/emacs:     file format mach-o-i386
src/emacs
architecture: i386, flags 0x00000012:
EXEC_P, HAS_SYMS
start address 0x0000282c
Mach-O header:
 magic     : feedface
 cputype   : 00000007 (i386)
 cpusubtype: 00000003
 filetype  : 00000002 (execute)
 ncmds     : 00000023 (35)
 sizeofcmds: 00000adc
 flags     : 01000085 (noundefs+dyldlink+twolevel+0x1000000)
 reserved  : 00000002

Load command segment: name: __PAGEZERO
    vmaddr: 0000000000000000   vmsize: 0000000000001000
   fileoff: 0000000000000000 filesize: 0000000000000000 endoff: 0000000000000000
   nsects: 0   flags: 0

Load command segment: name: __TEXT
    vmaddr: 0000000000001000   vmsize: 0000000000262000
   fileoff: 0000000000000000 filesize: 0000000000262000 endoff: 0000000000262000
   nsects: 6   flags: 0
 Section: __text           __TEXT           (bfdname: .text)
  addr: 000000000000282c size: 0000000000242e14 offset: 000000000000182c
  align: 2  nreloc: 0  reloff: 0000000000000000
  flags: 80000400 (type: regular attr: some_instructions+pure_instructions)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0
 Section: __symbol_stub    __TEXT           (bfdname: __TEXT.__symbol_stub)
  addr: 0000000000245640 size: 0000000000000ed6 offset: 0000000000244640
  align: 1  nreloc: 0  reloff: 0000000000000000
  flags: 80000408 (type: symbol_stubs attr: some_instructions+pure_instructions)
  first indirect sym: 0 (633 entries)  stub size: 6  reserved3: 0x0
 Section: __stub_helper    __TEXT           (bfdname: __TEXT.__stub_helper)
  addr: 0000000000246518 size: 00000000000018c8 offset: 0000000000245518
  align: 2  nreloc: 0  reloff: 0000000000000000
  flags: 80000400 (type: regular attr: some_instructions+pure_instructions)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0
 Section: __const          __TEXT           (bfdname: .const)
  addr: 0000000000247de0 size: 0000000000000828 offset: 0000000000246de0
  align: 4  nreloc: 0  reloff: 0000000000000000
  flags: 00000000 (type: regular attr: -)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0
 Section: __cstring        __TEXT           (bfdname: .cstring)
  addr: 0000000000248610 size: 000000000001a9a4 offset: 0000000000247610
  align: 4  nreloc: 0  reloff: 0000000000000000
  flags: 00000002 (type: cstring_literals attr: -)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0
 Section: __unwind_info    __TEXT           (bfdname: __TEXT.__unwind_info)
  addr: 0000000000262fb4 size: 0000000000000048 offset: 0000000000261fb4
  align: 0  nreloc: 0  reloff: 0000000000000000
  flags: 00000000 (type: regular attr: -)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0

Load command segment: name: __DATA
    vmaddr: 0000000000263000   vmsize: 000000000030d000
   fileoff: 0000000000262000 filesize: 000000000030d000 endoff: 000000000056f000
   nsects: 7   flags: 0
 Section: __program_vars   __DATA           (bfdname: __DATA.__program_vars)
  addr: 0000000000263000 size: 0000000000000014 offset: 0000000000262000
  align: 2  nreloc: 0  reloff: 0000000000000000
  flags: 00000000 (type: regular attr: -)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0
 Section: __nl_symbol_ptr  __DATA           (bfdname: .non_lazy_symbol_ptr)
  addr: 0000000000263014 size: 000000000000090c offset: 0000000000262014
  align: 2  nreloc: 0  reloff: 0000000000000000
  flags: 00000006 (type: non_lazy_symbol_pointers attr: -)
  first indirect sym: 633 (579 entries)  reserved2: 0x0  reserved3: 0x0
 Section: __la_symbol_ptr  __DATA           (bfdname: .lazy_symbol_ptr)
  addr: 0000000000263920 size: 00000000000009e4 offset: 0000000000262920
  align: 2  nreloc: 0  reloff: 0000000000000000
  flags: 00000007 (type: lazy_symbol_pointers attr: -)
  first indirect sym: 1212 (633 entries)  reserved2: 0x0  reserved3: 0x0
 Section: __data           __DATA           (bfdname: .data)
  addr: 0000000000264310 size: 000000000029f118 offset: 0000000000263310
  align: 4  nreloc: 0  reloff: 0000000000000000
  flags: 00000000 (type: regular attr: -)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0
 Section: __const          __DATA           (bfdname: .const_data)
  addr: 0000000000503430 size: 0000000000001a1c offset: 0000000000502430
  align: 4  nreloc: 0  reloff: 0000000000000000
  flags: 00000000 (type: regular attr: -)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0
 Section: __common         __DATA           (bfdname: __DATA.__common)
  addr: 0000000000504e50 size: 0000000000004308 offset: 0000000000503e50
  align: 4  nreloc: 0  reloff: 0000000000000000
  flags: 00000000 (type: regular attr: -)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0
 Section: __bss            __DATA           (bfdname: .bss)
  addr: 0000000000509160 size: 0000000000066c31 offset: 0000000000508160
  align: 4  nreloc: 0  reloff: 0000000000000000
  flags: 00000000 (type: regular attr: -)
  reserved1: 0x0  reserved2: 0x0  reserved3: 0x0

Load command segment: name: __DATA
    vmaddr: 00000000013e6000   vmsize: 0000000000001000
   fileoff: 000000000056f000 filesize: 0000000000000000 endoff: 000000000056f000
   nsects: 0   flags: 0

Load command segment: name: __DATA
    vmaddr: 0000000001500000   vmsize: 00000000000fffa0
   fileoff: 000000000056f000 filesize: 00000000000fff9d endoff: 000000000066ef9d
   nsects: 0   flags: 0

Load command segment: name: __DATA
    vmaddr: 0000000002000000   vmsize: 00000000007f8000
   fileoff: 000000000066f000 filesize: 00000000004fb25e endoff: 0000000000b6a25e
   nsects: 0   flags: 0

Load command segment: name: __DATA
    vmaddr: 00000000027f8000   vmsize: 0000000000007f98
   fileoff: 0000000000b6b000 filesize: 0000000000004fce endoff: 0000000000b6ffce
   nsects: 0   flags: 0

Load command segment: name: __DATA
    vmaddr: 0000000002b00000   vmsize: 00000000000fffa0
   fileoff: 0000000000b70000 filesize: 00000000000fff9c endoff: 0000000000c6ff9c
   nsects: 0   flags: 0

Load command segment: name: __DATA
    vmaddr: 0000000002c00000   vmsize: 00000000000fffa0
   fileoff: 0000000000c70000 filesize: 00000000000fff9c endoff: 0000000000d6ff9c
   nsects: 0   flags: 0

Load command segment: name: __LINKEDIT
    vmaddr: 0000000000570000   vmsize: 00000000000a4000
   fileoff: 0000000000d70000 filesize: 00000000000a3798 endoff: 0000000000e13798
   nsects: 0   flags: 0

Load command dyld_info:
       rebase: off: 0x00000000  size: 0       
         bind: off: 0x00d70000  size: 12300   
    weak bind: off: 0x00000000  size: 0       
    lazy bind: off: 0x00000000  size: 0       
       export: off: 0x00d7300c  size: 65164   

Load command symtab:
   symoff: 0x00d82e98    nsyms:    25191  (endoff: 0x00dccb6c)
   stroff: 0x00dce840  strsize:   282456  (endoff: 0x00e13798)

Load command dysymtab:
              local symbols: idx:          0  num: 21664    (nxtidx: 21664)
           external symbols: idx:      21664  num: 2870     (nxtidx: 24534)
          undefined symbols: idx:      24534  num: 657      (nxtidx: 25191)
           table of content: off: 0x00000000  num: 0        (endoff: 0x00000000)
               module table: off: 0x00000000  num: 0        (endoff: 0x00000000)
   external reference table: off: 0x00000000  num: 0        (endoff: 0x00000000)
      indirect symbol table: off: 0x00dccb6c  num: 1845     (endoff: 0x00dce840)
  external relocation table: off: 0x00000000  num: 0        (endoff: 0x00000000)
     local relocation table: off: 0x00000000  num: 0        (endoff: 0x00000000)
  indirect symbols:
  for section __TEXT.__symbol_stub:
...

Load command load_dylinker: /usr/lib/dyld

Load command uuid: 68 94 de 22 9a 65 3f 0d b1 f1 02 01 ce 4b 6a 93

Load command unixthread: nflavours: 1
   0: flavour: 0x00000001  offset: 0x0000069c  size: 0x00000040

Load command load_dylib: /sw/lib/libXaw3d.7.dylib
            time stamp: 0x00000002
       current version: 0x00070000
  comptibility version: 0x00070000

Load command load_dylib: /usr/X11/lib/libXmu.6.dylib
            time stamp: 0x00000002
       current version: 0x00090000
  comptibility version: 0x00090000

Load command load_dylib: /usr/X11/lib/libXt.6.dylib
            time stamp: 0x00000002
       current version: 0x00070000
  comptibility version: 0x00070000

Load command load_dylib: /usr/X11/lib/libSM.6.dylib
            time stamp: 0x00000002
       current version: 0x00070000
  comptibility version: 0x00070000

Load command load_dylib: /usr/X11/lib/libICE.6.dylib
            time stamp: 0x00000002
       current version: 0x000a0000
  comptibility version: 0x000a0000

Load command load_dylib: /usr/X11/lib/libX11.6.dylib
            time stamp: 0x00000002
       current version: 0x00090000
  comptibility version: 0x00090000

Load command load_dylib: /usr/X11/lib/libXrender.1.dylib
            time stamp: 0x00000002
       current version: 0x00050000
  comptibility version: 0x00050000

Load command load_dylib: /sw/lib/xft2/lib/libXft.2.dylib
            time stamp: 0x00000002
       current version: 0x00050000
  comptibility version: 0x00050000

Load command load_dylib: /sw/lib/fontconfig2/lib/libfontconfig.1.dylib
            time stamp: 0x00000002
       current version: 0x00060400
  comptibility version: 0x00060000

Load command load_dylib: /sw/lib/freetype219/lib/libfreetype.6.dylib
            time stamp: 0x00000002
       current version: 0x000e0100
  comptibility version: 0x000e0000

Load command load_dylib: /sw/lib/libMagickWand.5.dylib
            time stamp: 0x00000002
       current version: 0x00060000
  comptibility version: 0x00060000

Load command load_dylib: /sw/lib/libMagickCore.5.dylib
            time stamp: 0x00000002
       current version: 0x00060000
  comptibility version: 0x00060000

Load command load_dylib: /sw/lib/libxml2.2.dylib
            time stamp: 0x00000002
       current version: 0x000a0800
  comptibility version: 0x000a0000

Load command load_dylib: /sw/lib/ncurses/libncurses.5.dylib
            time stamp: 0x00000002
       current version: 0x00050000
  comptibility version: 0x00050000

Load command load_dylib: /sw/lib/libotf.0.dylib
            time stamp: 0x00000002
       current version: 0x00010000
  comptibility version: 0x00010000

Load command load_dylib: /sw/lib/libm17n-flt.0.dylib
            time stamp: 0x00000002
       current version: 0x00050000
  comptibility version: 0x00050000

Load command load_dylib: /sw/lib/libm17n-core.0.dylib
            time stamp: 0x00000002
       current version: 0x00050000
  comptibility version: 0x00050000

Load command load_dylib: /sw/lib/gnutls28/libgnutls.28.dylib
            time stamp: 0x00000002
       current version: 0x00240100
  comptibility version: 0x00240000

Load command load_dylib: /usr/lib/libSystem.B.dylib
            time stamp: 0x00000002
       current version: 0x007d020b
  comptibility version: 0x00010000

Segments and Sections:
 #: Segment name     Section name     Address
[Segment __PAGEZERO       0000000000000000-0000000000000fff ---]
[Segment __TEXT           0000000000001000-0000000000262fff r-x]
01: __TEXT           __text           000000000000282c 0000000000242e14 80000400
02: __TEXT           __symbol_stub    0000000000245640 0000000000000ed6 80000408
03: __TEXT           __stub_helper    0000000000246518 00000000000018c8 80000400
04: __TEXT           __const          0000000000247de0 0000000000000828 00000000
05: __TEXT           __cstring        0000000000248610 000000000001a9a4 00000002
06: __TEXT           __unwind_info    0000000000262fb4 0000000000000048 00000000
[Segment __DATA           0000000000263000-000000000056ffff rw-]
07: __DATA           __program_vars   0000000000263000 0000000000000014 00000000
08: __DATA           __nl_symbol_ptr  0000000000263014 000000000000090c 00000006
09: __DATA           __la_symbol_ptr  0000000000263920 00000000000009e4 00000007
10: __DATA           __data           0000000000264310 000000000029f118 00000000
11: __DATA           __const          0000000000503430 0000000000001a1c 00000000
12: __DATA           __common         0000000000504e50 0000000000004308 00000000
13: __DATA           __bss            0000000000509160 0000000000066c31 00000000
[Segment __DATA           00000000013e6000-00000000013e6fff rw-]
[Segment __DATA           0000000001500000-00000000015fff9f rw-]
[Segment __DATA           0000000002000000-00000000027f7fff rw-]
[Segment __DATA           00000000027f8000-00000000027fff97 rw-]
[Segment __DATA           0000000002b00000-0000000002bfff9f rw-]
[Segment __DATA           0000000002c00000-0000000002cfff9f rw-]
[Segment __LINKEDIT       0000000000570000-0000000000613fff r--]

Sections:
Idx Name          Size      VMA               LMA               File off  Algn
  0 .text         00242e14  0000282c  0000282c  0000182c  2**2
                  CONTENTS, ALLOC, LOAD, CODE
  1 __TEXT.__symbol_stub 00000ed6  00245640  00245640  00244640  2**1
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  2 __TEXT.__stub_helper 000018c8  00246518  00246518  00245518  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  3 .const        00000828  00247de0  00247de0  00246de0  2**4
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  4 .cstring      0001a9a4  00248610  00248610  00247610  2**4
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  5 __TEXT.__unwind_info 00000048  00262fb4  00262fb4  00261fb4  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  6 __DATA.__program_vars 00000014  00263000  00263000  00262000  2**2
                  CONTENTS, ALLOC, LOAD, DATA
  7 .non_lazy_symbol_ptr 0000090c  00263014  00263014  00262014  2**2
                  CONTENTS, ALLOC, LOAD, DATA
  8 .lazy_symbol_ptr 000009e4  00263920  00263920  00262920  2**2
                  CONTENTS, ALLOC, LOAD, DATA
  9 .data         0029f118  00264310  00264310  00263310  2**4
                  CONTENTS, ALLOC, LOAD, DATA
 10 .const_data   00001a1c  00503430  00503430  00502430  2**4
                  CONTENTS, ALLOC, LOAD, DATA
 11 __DATA.__common 00004308  00504e50  00504e50  00503e50  2**4
                  CONTENTS, ALLOC, LOAD, DATA
 12 .bss          00066c31  00509160  00509160  00508160  2**4
                  CONTENTS, ALLOC, LOAD, DATA
 13 LC_THREAD.x86_THREAD_STATE32.0 00000040  00000000  00000000  0000069c  2**0
                  CONTENTS


--
Mit friedvollen Grüßen

  Pete

These are my principles and if you don't like them... well, I have others.
                                - Groucho Marx
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