diff --git a/libc/kernel/common/linux/a.out.h b/libc/kernel/common/linux/a.out.h
index 7325304..87c5b19 100644
--- a/libc/kernel/common/linux/a.out.h
+++ b/libc/kernel/common/linux/a.out.h
@@ -7,214 +7,218 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __A_OUT_GNU_H__
 #define __A_OUT_GNU_H__
-
 #define __GNU_EXEC_MACROS__
-
 #ifndef __STRUCT_EXEC_OVERRIDE__
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/a.out.h>
-
 #endif
-
 enum machine_type {
 #ifdef M_OLDSUN2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  M__OLDSUN2 = M_OLDSUN2,
 #else
  M_OLDSUN2 = 0,
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifdef M_68010
  M__68010 = M_68010,
 #else
  M_68010 = 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #ifdef M_68020
  M__68020 = M_68020,
 #else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  M_68020 = 2,
 #endif
 #ifdef M_SPARC
  M__SPARC = M_SPARC,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #else
  M_SPARC = 3,
 #endif
-
  M_386 = 100,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  M_MIPS1 = 151,
  M_MIPS2 = 152
 };
-
 #ifndef N_MAGIC
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
 #endif
 #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
 #define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_SET_INFO(exec, magic, type, flags)   ((exec).a_info = ((magic) & 0xffff)   | (((int)(type) & 0xff) << 16)   | (((flags) & 0xff) << 24))
 #define N_SET_MAGIC(exec, magic)   ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
-
 #define N_SET_MACHTYPE(exec, machtype)   ((exec).a_info =   ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
-
 #define N_SET_FLAGS(exec, flags)   ((exec).a_info =   ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define OMAGIC 0407
-
 #define NMAGIC 0410
-
 #define ZMAGIC 0413
-
 #define QMAGIC 0314
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CMAGIC 0421
-
 #ifndef N_BADMAG
 #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC   && N_MAGIC(x) != NMAGIC   && N_MAGIC(x) != ZMAGIC   && N_MAGIC(x) != QMAGIC)
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
-
 #ifndef N_TXTOFF
 #define N_TXTOFF(x)   (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) :   (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef N_DATOFF
 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
 #endif
-
 #ifndef N_TRELOFF
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
 #endif
-
 #ifndef N_DRELOFF
 #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #ifndef N_SYMOFF
 #define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x))
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef N_STROFF
 #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))
 #endif
-
 #ifndef N_TXTADDR
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0)
 #endif
-
 #if defined(vax) || defined(hp300) || defined(pyr)
 #define SEGMENT_SIZE page_size
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #ifdef sony
 #define SEGMENT_SIZE 0x2000
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifdef is68k
 #define SEGMENT_SIZE 0x20000
 #endif
 #if defined(m68k) && defined(PORTAR)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PAGE_SIZE 0x400
 #define SEGMENT_SIZE PAGE_SIZE
 #endif
-
 #ifdef linux
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/page.h>
 #if defined(__i386__) || defined(__mc68000__)
 #define SEGMENT_SIZE 1024
 #else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef SEGMENT_SIZE
 #define SEGMENT_SIZE PAGE_SIZE
 #endif
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE)
-
 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
-
 #ifndef N_DATADDR
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_DATADDR(x)   (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x))   : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
 #endif
-
 #ifndef N_BSSADDR
 #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #ifndef N_NLIST_DECLARED
 struct nlist {
  union {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char *n_name;
  struct nlist *n_next;
  long n_strx;
  } n_un;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned char n_type;
  char n_other;
  short n_desc;
  unsigned long n_value;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 #endif
-
 #ifndef N_UNDF
 #define N_UNDF 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #ifndef N_ABS
 #define N_ABS 2
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef N_TEXT
 #define N_TEXT 4
 #endif
 #ifndef N_DATA
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_DATA 6
 #endif
 #ifndef N_BSS
 #define N_BSS 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #ifndef N_FN
 #define N_FN 15
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef N_EXT
 #define N_EXT 1
 #endif
 #ifndef N_TYPE
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_TYPE 036
 #endif
 #ifndef N_STAB
 #define N_STAB 0340
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #define N_INDR 0xa
-
 #define N_SETA 0x14  
 #define N_SETT 0x16  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define N_SETD 0x18  
 #define N_SETB 0x1A  
-
 #define N_SETV 0x1C  
-
 #ifndef N_RELOCATION_INFO_DECLARED
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct relocation_info
 {
-
  int r_address;
-
  unsigned int r_symbolnum:24;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int r_pcrel:1;
-
  unsigned int r_length:2;
-
  unsigned int r_extern:1;
-
 #ifdef NS32K
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned r_bsr:1;
  unsigned r_disp:1;
  unsigned r_pad:2;
 #else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int r_pad:4;
 #endif
 };
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif