From d2a03b3e43043b596a79803bcb93f70e513bbb50 Mon Sep 17 00:00:00 2001 From: Patrick Georgi Date: Mon, 13 Mar 2017 13:48:03 +0100 Subject: [PATCH] Remove undefined behavior Per clang-3.9, the compiler fails on #define ...defined(...) statements as they're undefined behavior (apparently with different behavior between gcc/clang and msvc, too). See clang's cfe repo commit r258128 for details. Change-Id: I82b6235e11b425fae45eebbe06b08f81c5bdbb98 Signed-off-by: Patrick Georgi Reviewed-on: https://review.coreboot.org/18792 Reviewed-by: Stefan Reinauer Tested-by: build bot (Jenkins) --- hwaccess.c | 18 +++++++++++++++--- platform.h | 18 +++++++++++++++--- 2 files changed, 30 insertions(+), 6 deletions(-) diff --git a/hwaccess.c b/hwaccess.c index aede7e3..2bf6f42 100644 --- a/hwaccess.c +++ b/hwaccess.c @@ -37,9 +37,21 @@ #error "Unknown operating system" #endif -#define USE_IOPL (IS_LINUX || IS_MACOSX || defined(__NetBSD__) || defined(__OpenBSD__)) -#define USE_DEV_IO (defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)) -#define USE_IOPERM (defined(__gnu_hurd__)) +#if IS_LINUX || IS_MACOSX || defined(__NetBSD__) || defined(__OpenBSD__) +#define USE_IOPL 1 +#else +#define USE_IOPL 0 +#endif +#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) +#define USE_DEV_IO 1 +#else +#define USE_DEV_IO 0 +#endif +#if defined(__gnu_hurd__) +#define USE_IOPERM 1 +#else +#define USE_IOPERM 0 +#endif #if USE_IOPERM #include diff --git a/platform.h b/platform.h index c5a52ef..b2fdcd0 100644 --- a/platform.h +++ b/platform.h @@ -25,9 +25,21 @@ #define __PLATFORM_H__ 1 // Helper defines for operating systems -#define IS_LINUX (defined(__gnu_linux__) || defined(__linux__)) -#define IS_MACOSX (defined(__APPLE__) && defined(__MACH__)) /* yes, both. */ -#define IS_WINDOWS (defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) || defined(__WINDOWS__)) +#if defined(__gnu_linux__) || defined(__linux__) +#define IS_LINUX 1 +#else +#define IS_LINUX 0 +#endif +#if defined(__APPLE__) && defined(__MACH__) /* yes, both. */ +#define IS_MACOSX 1 +#else +#define IS_MACOSX 0 +#endif +#if defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) || defined(__WINDOWS__) +#define IS_WINDOWS 1 +#else +#define IS_WINDOWS 0 +#endif // Likewise for target architectures #if defined (__i386__) || defined (__x86_64__) || defined(__amd64__) -- 2.13.3