From: Richard Henderson Date: Fri, 16 Feb 2024 21:40:11 +0000 (-0600) Subject: tcg/aarch64: Apple does not align __int128_t in even registers X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7f89fdf8ebe6ef8df48f0a05f44e1020c713a94e;p=qemu.git tcg/aarch64: Apple does not align __int128_t in even registers 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-stable@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 Message-Id: <9fc0c2c7-dd57-459e-aecb-528edb74b4a7@linaro.org> Reviewed-by: Philippe Mathieu-Daudé --- 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)