1#!/bin/sh
2
3set -e
4
5#---------------------------------------------------------------------
6# This quick and dirty script assists in updating the C++ demangler
7# machinery in coregrind/m_demangle.
8# The script will check out 
9# - old and new revisions of the C++ demangler related files from GCC's trunk
10# - m_demangle from valgrind's trunk.
11# It will assemble
12# - a patch file with local changes that were applied to the C++
13#   demangler to make it work within valgrind
14# - a directory new_m_demangle whose contents should be copied to
15#   m_demangle in valgrind trunk
16# The patch will *not* be applied automatically.
17#---------------------------------------------------------------------
18
19# You need to modify these revision numbers for your update.
20old_gcc_revision=r181975  # the revision of the previous update
21new_gcc_revision=r212125  # the revision for this update
22
23# Unless the organization of demangler related files has changed, no
24# changes below this line should be necessary.
25
26# Setup a temp directory
27DIR=/tmp/demangle
28
29rm -rf $DIR
30mkdir -p $DIR
31
32cd $DIR
33
34echo "Updating the demangler in $DIR"
35
36# 1) Check out files from old GCC revision
37echo "Checking out GCC files @ $old_gcc_revision"
38
39mkdir gcc-$old_gcc_revision
40cd    gcc-$old_gcc_revision
41svn co -$old_gcc_revision svn://gcc.gnu.org/svn/gcc/trunk/libiberty libiberty > /dev/null
42svn co -$old_gcc_revision svn://gcc.gnu.org/svn/gcc/trunk/include   include   > /dev/null
43rm -rf libiberty/.svn
44rm -rf include/.svn
45cd ..
46
47# 2) Assemble the ones we need in $DIR/$old_gcc_revision
48mkdir $old_gcc_revision
49cd    $old_gcc_revision
50cp    ../gcc-$old_gcc_revision/include/ansidecl.h .
51cp    ../gcc-$old_gcc_revision/include/demangle.h .
52cp    ../gcc-$old_gcc_revision/include/dyn-string.h .
53cp    ../gcc-$old_gcc_revision/include/safe-ctype.h .
54cp    ../gcc-$old_gcc_revision/libiberty/cp-demangle.c .
55cp    ../gcc-$old_gcc_revision/libiberty/cp-demangle.h .
56cp    ../gcc-$old_gcc_revision/libiberty/cplus-dem.c .
57cp    ../gcc-$old_gcc_revision/libiberty/dyn-string.c .
58cp    ../gcc-$old_gcc_revision/libiberty/safe-ctype.c .
59cd ..
60
61# 3) Check out files from new GCC revision
62
63echo "Checking out GCC files @ $new_gcc_revision"
64mkdir gcc-$new_gcc_revision
65cd    gcc-$new_gcc_revision
66svn co -$new_gcc_revision svn://gcc.gnu.org/svn/gcc/trunk/libiberty libiberty > /dev/null
67svn co -$new_gcc_revision svn://gcc.gnu.org/svn/gcc/trunk/include   include   > /dev/null
68rm -rf libiberty/.svn
69rm -rf include/.svn
70cd ..
71
72# 4) Assemble the ones we need in $DIR/$new_gcc_revision
73
74mkdir $new_gcc_revision
75cd    $new_gcc_revision
76cp    ../gcc-$new_gcc_revision/include/ansidecl.h .
77cp    ../gcc-$new_gcc_revision/include/demangle.h .
78cp    ../gcc-$new_gcc_revision/include/dyn-string.h .
79cp    ../gcc-$new_gcc_revision/include/safe-ctype.h .
80cp    ../gcc-$new_gcc_revision/libiberty/cp-demangle.c .
81cp    ../gcc-$new_gcc_revision/libiberty/cp-demangle.h .
82cp    ../gcc-$new_gcc_revision/libiberty/cplus-dem.c .
83cp    ../gcc-$new_gcc_revision/libiberty/dyn-string.c .
84cp    ../gcc-$new_gcc_revision/libiberty/safe-ctype.c .
85cd ..
86
87# 5) Check out valgrind coregrind/m_demangle into old_m_demangle
88echo "Checking out coregrind/m_demangle"
89svn co svn://svn.valgrind.org/valgrind/trunk/coregrind/m_demangle old_m_demangle > /dev/null
90rm -rf old_m_demangle/.svn
91
92# 6) Create new_m_demangle
93cp -rp old_m_demangle new_m_demangle
94cp -rp $new_gcc_revision/*.[ch] new_m_demangle
95
96# 7) Compare files from previous GCC revision against old_m_demangle
97#    (This gets us the changes we made to the demangler).
98echo "Creating patch"
99set +e
100diff -r -u $old_gcc_revision old_m_demangle > our-changes
101echo "Patch file 'our-changes' created"
102
103# 7) See how the patch would apply
104echo "Attempting to apply the patch (but not actualy doing it)."
105cd new_m_demangle
106patch --dry -p1 < ../our-changes
107