From 0f7fdd347514ea97b24f5f658f3ae31f9b078397 Mon Sep 17 00:00:00 2001 From: Stefan Weil Date: Wed, 31 Aug 2011 12:38:00 +0200 Subject: Add new macro QEMU_PACKED for packed C structures A packed struct needs different gcc attributes for compilations with MinGW compilers because glib-2.0 adds compiler flag -mms-bitfields which modifies the packing algorithm. Attribute gcc_struct reverses the negative effects of -mms-bitfields. QEMU_PACKED sets this attribute and must be used for any packed struct which is affected by -mms-bitfields. Signed-off-by: Stefan Weil Signed-off-by: Blue Swirl --- compiler.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/compiler.h b/compiler.h index 9af5dc6c9..a2d5959e4 100644 --- a/compiler.h +++ b/compiler.h @@ -12,6 +12,12 @@ #define QEMU_WARN_UNUSED_RESULT #endif +#if defined(_WIN32) +# define QEMU_PACKED __attribute__((gcc_struct, packed)) +#else +# define QEMU_PACKED __attribute__((packed)) +#endif + #define QEMU_BUILD_BUG_ON(x) \ typedef char qemu_build_bug_on__##__LINE__[(x)?-1:1]; -- cgit v1.2.3