tcg: Optionally sign-extend 32-bit arguments for 64-bit hosts.
Some hosts (amd64, ia64) have an ABI that ignores the high bits
of the 64-bit register when passing 32-bit arguments. Others
require the value to be properly sign-extended for the type.
I.e. "int32_t" must be sign-extended and "uint32_t" must be
zero-extended to 64-bits.
To effect this, extend the "sizemask" parameter to tcg_gen_callN
to include the signedness of the type of each parameter. If the
tcg target requires it, extend each 32-bit argument into a 64-bit
temp and pass that to the function call.
This ABI feature is required by sparc64, ppc64 and s390x.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 5cf6cd4..c025a2f 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -95,6 +95,7 @@
#define dh_alias_avr ptr
#define dh_ctype_avr ppc_avr_t *
+#define dh_is_signed_avr dh_is_signed_ptr
DEF_HELPER_3(vaddubm, void, avr, avr, avr)
DEF_HELPER_3(vadduhm, void, avr, avr, avr)
