From 77f4a2502895c8c619da30c3ddee12f0695ad05f Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Wed, 26 Dec 2001 04:53:34 +0000
Subject: * Makefile.in: Autogenerate some header files which provide magic
 numbers. Force dependencies for files which depend on autogenerated headers
 to ensure that they are always built. * child_info.h (child_info): Add new
 fields to accommodate new magic number header stuff. * dcrt0.cc: Rely on
 "child_info_magic.h" to ensure that correct child_info magic numbers are
 used. (dll_crt0_1): Temporarily remove _cygwin_testing_magic test.
 (_dll_crt0): Do more testing on magic numbers from fork_info structure.  Call
 "multiple_cygwin_problem" where appropriate. (multiple_cygwin_problem):
 Rename from multiple_cygwin_die.  Issue a warning or die, as appropriate
 based on cygwin version/magic number mismatch. * pinfo.cc (pinfo::exit):
 Don't attempt to dereference `this' if it doesn't exist.  This can happen
 when a fatal error occurs early in process initialization. * shared.cc: Rely
 on "shared_info_magic.h" to accommodate that new magic number header stuff.
 (shared_info::initialize): Use new magic number stuff, for shared region.
 (memory_init): Ditto, for mount table. * shared_info.h: Accomodate new magic
 number stuff for shared region and mount table. * sigproc.cc: Rely on
 "child_info_magic.h" to accommodate new magic number header stuff.
 (init_child_info): Initialize new fields in child_info) to accomodate magic
 numbers. * winsup.h: Rename multiple_cygwin_die to multiple_cygwin_problem. *
 include/cygwin/version.h: Define macros for manipulating version magic. *
 cygmagic: New shell script for generating magic numbers.

---
 winsup/cygwin/cygmagic | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 winsup/cygwin/cygmagic

(limited to 'winsup/cygwin/cygmagic')

diff --git a/winsup/cygwin/cygmagic b/winsup/cygwin/cygmagic
new file mode 100755
index 000000000..17c74b496
--- /dev/null
+++ b/winsup/cygwin/cygmagic
@@ -0,0 +1,20 @@
+#!/bin/sh
+file_magic=$1; shift
+gcc=$1; shift
+file=$1; shift
+trap "rm -f /tmp/$$.magic" 0 1 2 15
+cat <<EOF > $file_magic
+/* autogenerated - do not edit */
+#include "$file"
+EOF
+while [ -n "$1" ]; do
+    define=$1; shift
+    struct=$1; shift
+    sum=`$gcc -E $file | sed -n "/^$struct/,/^};/p" | sed -e 's/[ 	]//g' -e '/^$/d' | sum | awk '{print "obase=16;\"0x\";", $1}' | bc | tr '[A-Z]' '[a-z]'`
+    echo "#define $define $sum"
+    curr=`sed -n "s/^#[ 	]*define CURR_$define[ 	][ 	]*\([^ 	][^ 	]*\)/\1/p" $file`
+    [ "$curr" == "$sum" ] || echo "*** WARNING WARNING WARNING WARNING WARNING ***
+*** $file: magic number changed old $curr != new $sum
+*** WARNING WARNING WARNING WARNING WARNING ***" 1>&2
+done >> $file_magic
+exit 0
-- 
cgit v1.2.3