Enable real addressing by disabling PIE

toolbits · Dec 28, 2015 · 4b5f3bd · 4b5f3bd
1 parent a89bb77
commit 4b5f3bd
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Showing 2 changed files with 17 additions and 0 deletions.
diff --git a/BasiliskII/src/Unix/Darwin/lowmem.c b/BasiliskII/src/Unix/Darwin/lowmem.c
@@ -72,6 +72,11 @@ void pagezero_32(struct mach_header *machhead)
 	/* change the permissions */
 	sc_cmd->maxprot = target_uint32(VM_PROT_ALL);
 	sc_cmd->initprot = target_uint32(VM_PROT_ALL);
+
+#ifdef MH_PIE
+	/* disable pie in header */
+	machhead->flags = target_uint32(target_uint32(machhead->flags) & ~MH_PIE);
+#endif
 }
 
 #if defined(MH_MAGIC_64)

diff --git a/SheepShaver/src/Unix/configure.ac b/SheepShaver/src/Unix/configure.ac
@@ -936,6 +936,18 @@ AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_mmap_vm,
 
 fi dnl HAVE_MMAP_VM
 
+dnl Check if we can disable position-independent code
+AC_CACHE_CHECK([how to disable position-independent code],
+  ac_cv_no_pie, [
+  ac_cv_no_pie='-Wl,-no_pie'
+  saved_LDFLAGS="$LDFLAGS"
+  LDFLAGS="$LDFLAGS $ac_cv_no_pie"
+  AC_TRY_LINK(,,,[ac_cv_no_pie="cannot"])
+  if [[ "$ac_cv_no_pie" = "cannot" ]]; then
+    LDFLAGS="$saved_LDFLAGS"
+  fi
+])
+
 dnl Check if we can modify the __PAGEZERO segment for use as Low Memory
 AC_CACHE_CHECK([whether __PAGEZERO can be Low Memory area 0x0000-0x3000],
   ac_cv_pagezero_hack, [