[Qemu-devel] [PATCH] [S390] Remove warning in tcg stub (tcg_out_reloc)

[Alexander Graf <agraf@suse.de>]

On S390 we don't have a real TCG implementation but use a stub instead. This
stub obviously doesn't call any of the TCG helper functions that are usually
used by the other TCG targets.

If such a helper function is static though, we end up getting a warning that
turns into an error thanks to Werror. So to successfully compile qemu, we need
to get rid of it. In this case it's tcg_out_reloc.

To do that, I figured the easiest way is to call tcg_out_reloc with dumb
parameters after an abort call. That way the code in question never gets
executed, but we got rid of the warning.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 tcg/s390/tcg-target.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/tcg/s390/tcg-target.c b/tcg/s390/tcg-target.c
index 265194a..f1a336d 100644
--- a/tcg/s390/tcg-target.c
+++ b/tcg/s390/tcg-target.c
@@ -35,6 +35,12 @@ static void patch_reloc(uint8_t *code_ptr, int type,
                 tcg_target_long value, tcg_target_long addend)
 {
     tcg_abort();
+
+    /*
+     * XXX We need to call this function at least once, since it's static.
+     *     Please remove that code when implementing real s390x tcg support.
+     */
+    tcg_out_reloc(NULL, NULL, 0, 0, 0);
 }
 
 static inline int tcg_target_get_call_iarg_regs_count(int flags)
-- 
1.6.0.2