From a7c8939b0d8a35ed7ce6bc3aad0a51787020ef94 Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Thu, 24 Jan 2019 18:37:39 -0500 Subject: [PATCH] include/fpu/softfloat: Fix compilation with Clang on s390x Clang v7.0.1 does not like the __int128 variable type for inline assembly on s390x: In file included from fpu/softfloat.c:97: include/fpu/softfloat-macros.h:647:9: error: inline asm error: This value type register class is not natively supported! asm("dlgr %0, %1" : "+r"(n) : "r"(d)); ^ Disable this code part there now when compiling with Clang, so that the generic code gets used instead. Backports commit 2c00542c70b9cbd6da510c97cd3d46adcf9e3efc from qemu --- qemu/fpu/softfloat-macros.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/qemu/fpu/softfloat-macros.h b/qemu/fpu/softfloat-macros.h index e1849e80..46fdd4b1 100644 --- a/qemu/fpu/softfloat-macros.h +++ b/qemu/fpu/softfloat-macros.h @@ -641,7 +641,7 @@ static inline uint64_t udiv_qrnnd(uint64_t *r, uint64_t n1, uint64_t q; asm("divq %4" : "=a"(q), "=d"(*r) : "0"(n0), "1"(n1), "rm"(d)); return q; -#elif defined(__s390x__) +#elif defined(__s390x__) && !defined(__clang__) /* Need to use a TImode type to get an even register pair for DLGR. */ unsigned __int128 n = (unsigned __int128)n1 << 64 | n0; asm("dlgr %0, %1" : "+r"(n) : "r"(d));