From 0f8d2fd7d0c6ff169abed9b07ac63b57d80b8811 Mon Sep 17 00:00:00 2001
From: Egbert Eich <eich@suse.de>
Date: Fri, 2 Apr 2004 17:25:21 +0000
Subject: 69. Mark PLT table executable on OSes that don't allow to execute
 data     areas by default (Bugzilla 395, John Dennis).

---
 hw/xfree86/loader/elfloader.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/hw/xfree86/loader/elfloader.c b/hw/xfree86/loader/elfloader.c
index 482ac3f01..9664b33a8 100644
--- a/hw/xfree86/loader/elfloader.c
+++ b/hw/xfree86/loader/elfloader.c
@@ -1096,6 +1096,18 @@ ELFCreatePLT(ELFModulePtr elffile)
 	ErrorF("ELFCreatePLT() Unable to allocate memory!!!!\n");
 	return;
     }
+#   if defined(linux) || defined(__OpenBSD__)
+    {
+	unsigned long page_size = getpagesize();
+	unsigned long round;
+
+	round = (unsigned long)elffile->plt & (page_size - 1);
+	mprotect(elffile->plt - round,
+		 (elffile->pltsize + round + page_size - 1) & ~(page_size - 1),
+		 PROT_READ | PROT_WRITE | PROT_EXEC);
+    }
+#   endif
+									      
     elffile->sections[elffile->pltndx].sh_size = elffile->pltsize;
 # ifdef ELFDEBUG
     ELFDEBUG("ELFCreatePLT: PLT address %lx\n", elffile->plt);
-- 
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