Alexandre Julliard : loader: Make the loader position-independent on 64-bit.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: cc2cfb9b792bee681b96c5859084fd6d4d0bbed7
URL:    https://gitlab.winehq.org/wine/wine/-/commit/cc2cfb9b792bee681b96c5859084fd6...

Author: Alexandre Julliard 
Date:   Mon Jun 12 11:13:03 2023 +0200

loader: Make the loader position-independent on 64-bit.

---

configure    | 32 +++++++++++++++++++++++++++++++-
 configure.ac |  6 +++++-
 2 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index bbdf04b67d5..9f06d6193eb 100755
--- a/configure
+++ b/configure
@@ -10244,7 +10244,7 @@ fi
     WINEPRELOADER_LDFLAGS="-static -nostartfiles -nodefaultlibs -Wl,-Ttext=0x7d400000"

case $host_cpu in
-      *i[3456789]86* | x86_64 | *aarch64* | arm*)
+      *i[3456789]86* | arm*)
         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wl,-Ttext-segment=0x7bc00000" >&5
 printf %s "checking whether the compiler supports -Wl,-Ttext-segment=0x7bc00000... " >&6; }
 if test ${ac_cv_cflags__Wl__Ttext_segment_0x7bc00000+y}
@@ -10335,6 +10335,36 @@ printf "%s\n" "$ac_cv_cflags__Wl__z_max_page_size_0x1000" >&6; }
 if test "x$ac_cv_cflags__Wl__z_max_page_size_0x1000" = xyes
 then :
   WINELOADER_LDFLAGS="$WINELOADER_LDFLAGS -Wl,-z,max-page-size=0x1000"
+fi
+        ;;
+      *)
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wl,-pie" >&5
+printf %s "checking whether the compiler supports -Wl,-pie... " >&6; }
+if test ${ac_cv_cflags__Wl__pie+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_wine_try_cflags_saved=$CFLAGS
+CFLAGS="$CFLAGS -Wl,-pie"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int main(int argc, char **argv) { return 0; }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_cflags__Wl__pie=yes
+else $as_nop
+  ac_cv_cflags__Wl__pie=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+CFLAGS=$ac_wine_try_cflags_saved
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cflags__Wl__pie" >&5
+printf "%s\n" "$ac_cv_cflags__Wl__pie" >&6; }
+if test "x$ac_cv_cflags__Wl__pie" = xyes
+then :
+  WINELOADER_LDFLAGS="$WINELOADER_LDFLAGS -Wl,-pie"
 fi
         ;;
     esac
diff --git a/configure.ac b/configure.ac
index 58efc37296c..7a4af2d454e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -770,7 +770,7 @@ case $host_os in
     WINEPRELOADER_LDFLAGS="-static -nostartfiles -nodefaultlibs -Wl,-Ttext=0x7d400000"

case $host_cpu in
-      *i[[3456789]]86* | x86_64 | *aarch64* | arm*)
+      *i[[3456789]]86* | arm*)
         WINE_TRY_CFLAGS([-Wl,-Ttext-segment=0x7bc00000],
                         [case $host_os in
                          freebsd* | kfreebsd*-gnu) WINELOADER_LDFLAGS="$WINELOADER_LDFLAGS -Wl,-Ttext-segment=0x60000000" ;;
@@ -784,6 +784,10 @@ case $host_os in
         WINE_TRY_CFLAGS([-Wl,-z,max-page-size=0x1000],
                         [WINELOADER_LDFLAGS="$WINELOADER_LDFLAGS -Wl,-z,max-page-size=0x1000"])
         ;;
+      *)
+        WINE_TRY_CFLAGS([-Wl,-pie],
+                        [WINELOADER_LDFLAGS="$WINELOADER_LDFLAGS -Wl,-pie"])
+        ;;
     esac
     ;;
 esac