Commit 0f7fdd34 authored by Stefan Weil's avatar Stefan Weil Committed by Blue Swirl
Browse files

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: default avatarStefan Weil <weil@mail.berlios.de>
Signed-off-by: default avatarBlue Swirl <blauwirbel@gmail.com>
parent a74cd8cc

compiler.h

+6 −0
Original line number Diff line number Diff line
@@ -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];