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path: root/gnu/packages/patches/patchelf-page-size.patch
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Improve the determination of pageSize in patchelf.cc.

Patch by Mark H Weaver <mhw@netris.org>.

--- patchelf/src/patchelf.cc.orig	1969-12-31 19:00:01.000000000 -0500
+++ patchelf/src/patchelf.cc	2014-02-16 20:15:06.283203125 -0500
@@ -21,11 +21,19 @@
 using namespace std;
 
 
-#ifdef MIPSEL
-/* The lemote fuloong 2f kernel defconfig sets a page size of 16KB */
-const unsigned int pageSize = 4096*4;
-#else
+/* Note that some platforms support multiple page sizes.  Therefore,
+   it is not enough to query the current page size.  'pageSize' must
+   be the maximum architectural page size for the platform, which is
+   typically defined in the corresponding ABI document.
+
+   XXX FIXME: This won't work when we're cross-compiling.  */
+
+#if defined __MIPSEL__ || defined __MIPSEB__ || defined __aarch64__
+const unsigned int pageSize = 65536;
+#elif defined __x86_64__ || defined __i386__ || defined __arm__
 const unsigned int pageSize = 4096;
+#else
+# error maximum architectural page size unknown for this platform
 #endif
 
 
--- patchelf/tests/no-rpath.sh.orig	1969-12-31 19:00:01.000000000 -0500
+++ patchelf/tests/no-rpath.sh	2014-02-16 20:44:12.036376953 -0500
@@ -1,22 +1,22 @@
 #! /bin/sh -e
 
-rm -rf scratch
-mkdir -p scratch
+if [ "$(uname -m)" = i686 -a "$(uname -s)" = Linux ]; then
+    rm -rf scratch
+    mkdir -p scratch
 
-cp no-rpath scratch/
+    cp no-rpath scratch/
 
-oldRPath=$(../src/patchelf --print-rpath scratch/no-rpath)
-if test -n "$oldRPath"; then exit 1; fi
-../src/patchelf \
-  --set-interpreter "$(../src/patchelf --print-interpreter ../src/patchelf)" \
-  --set-rpath /foo:/bar:/xxxxxxxxxxxxxxx scratch/no-rpath
+    oldRPath=$(../src/patchelf --print-rpath scratch/no-rpath)
+    if test -n "$oldRPath"; then exit 1; fi
+    ../src/patchelf \
+      --set-interpreter "$(../src/patchelf --print-interpreter ../src/patchelf)" \
+      --set-rpath /foo:/bar:/xxxxxxxxxxxxxxx scratch/no-rpath
 
-newRPath=$(../src/patchelf --print-rpath scratch/no-rpath)
-if ! echo "$newRPath" | grep -q '/foo:/bar'; then
-    echo "incomplete RPATH"
-    exit 1
-fi
+    newRPath=$(../src/patchelf --print-rpath scratch/no-rpath)
+    if ! echo "$newRPath" | grep -q '/foo:/bar'; then
+        echo "incomplete RPATH"
+        exit 1
+    fi
 
-if [ "$(uname -m)" = i686 -a "$(uname -s)" = Linux ]; then
     cd scratch && ./no-rpath
 fi