>From
>https://developer.apple.com/documentation/xcode/writing-arm64-code-for-apple-platforms
When passing an argument with 16-byte alignment in integer registers,
Apple platforms allow the argument to start in an odd-numbered xN
register. The standard ABI requires it to begin in an even-numbered
xN register.
Cc: qemu-sta...@nongnu.org
Fixes: 5427a9a7604 ("tcg: Add TCG_TARGET_CALL_{RET,ARG}_I128")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2169
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
Message-Id: <9fc0c2c7-dd57-459e-aecb-528edb74b...@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>
---
tcg/aarch64/tcg-target.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h
index ef5ebe91bd..85d5746e47 100644
--- a/tcg/aarch64/tcg-target.h
+++ b/tcg/aarch64/tcg-target.h
@@ -55,7 +55,11 @@ typedef enum {
#define TCG_TARGET_CALL_STACK_OFFSET 0
#define TCG_TARGET_CALL_ARG_I32 TCG_CALL_ARG_NORMAL
#define TCG_TARGET_CALL_ARG_I64 TCG_CALL_ARG_NORMAL
-#define TCG_TARGET_CALL_ARG_I128 TCG_CALL_ARG_EVEN
+#ifdef CONFIG_DARWIN
+# define TCG_TARGET_CALL_ARG_I128 TCG_CALL_ARG_NORMAL
+#else
+# define TCG_TARGET_CALL_ARG_I128 TCG_CALL_ARG_EVEN
+#endif
#define TCG_TARGET_CALL_RET_I128 TCG_CALL_RET_NORMAL
#define have_lse (cpuinfo & CPUINFO_LSE)
--
2.34.1
