[PATCH for-6.0? 3/6] include/qemu/osdep.h: Move system includes to top

[Peter Maydell <peter.maydell@linaro.org>]

Mostly osdep.h puts the system includes at the top of the file; but
there are a couple of exceptions where we include a system header
halfway through the file.  Move these up to the top with the rest
so that all the system headers we include are included before
we include os-win32.h or os-posix.h.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20210414184343.26235-1-peter.maydell@linaro.org
---
 include/qemu/osdep.h | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 6d8562eaf40..cb2a07e472e 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -104,6 +104,15 @@ QEMU_EXTERN_C int daemon(int, int);
 #include <setjmp.h>
 #include <signal.h>
 
+#ifdef CONFIG_IOVEC
+#include <sys/uio.h>
+#endif
+
+#if defined(__linux__) && defined(__sparc__)
+/* The SPARC definition of QEMU_VMALLOC_ALIGN needs SHMLBA */
+#include <sys/shm.h>
+#endif
+
 #ifndef _WIN32
 #include <sys/wait.h>
 #else
@@ -111,6 +120,10 @@ QEMU_EXTERN_C int daemon(int, int);
 #define WEXITSTATUS(x) (x)
 #endif
 
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+#endif
+
 /*
  * This is somewhat like a system header; it must be outside any extern "C"
  * block because it includes system headers itself, including glib.h,
@@ -130,10 +143,6 @@ extern "C" {
 #include "sysemu/os-posix.h"
 #endif
 
-#ifdef __APPLE__
-#include <AvailabilityMacros.h>
-#endif
-
 #include "qemu/typedefs.h"
 
 /*
@@ -469,7 +478,6 @@ void qemu_anon_ram_free(void *ptr, size_t size);
    /* Use 1 MiB (segment size) alignment so gmap can be used by KVM. */
 #  define QEMU_VMALLOC_ALIGN (256 * 4096)
 #elif defined(__linux__) && defined(__sparc__)
-#include <sys/shm.h>
 #  define QEMU_VMALLOC_ALIGN MAX(qemu_real_host_page_size, SHMLBA)
 #else
 #  define QEMU_VMALLOC_ALIGN qemu_real_host_page_size
@@ -549,8 +557,6 @@ struct iovec {
 
 ssize_t readv(int fd, const struct iovec *iov, int iov_cnt);
 ssize_t writev(int fd, const struct iovec *iov, int iov_cnt);
-#else
-#include <sys/uio.h>
 #endif
 
 #ifdef _WIN32
-- 
2.20.1