Re: [PATCH v8 01/21] softmmu: split off vl.c:main() into main.c

["Alex Bennée" <alex.bennee@linaro.org>]

Bulekov, Alexander <alxndr@bu.edu> writes:

> A program might rely on functions implemented in vl.c, but implement its
> own main(). By placing main into a separate source file, there are no
> complaints about duplicate main()s when linking against vl.o. For
> example, the virtual-device fuzzer uses a main() provided by libfuzzer,
> and needs to perform some initialization before running the softmmu
> initialization. Now, main simply calls three vl.c functions which
> handle the guest initialization, main loop and cleanup.
>
> Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
> ---
<snip>
>  main.c                  | 53 +++++++++++++++++++++++++++++++++++++++++
<snip>
> --- a/Makefile.objs
> +++ b/Makefile.objs
> @@ -84,6 +84,8 @@ common-obj-$(CONFIG_FDT) += device_tree.o
>  # qapi
>  
>  common-obj-y += qapi/
> +
> +softmmu-obj-y = main.o
>  endif
>  
<snip>
> diff --git a/main.c b/main.c
> new file mode 100644
> index 0000000000..f10ceda541
> --- /dev/null
> +++ b/main.c
> @@ -0,0 +1,53 @@
> +/*
> + * QEMU System Emulator
> + *
> + * Copyright (c) 2003-2008 Fabrice Bellard
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a copy
> + * of this software and associated documentation files (the "Software"), to deal
> + * in the Software without restriction, including without limitation the rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> + * THE SOFTWARE.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qemu-common.h"
> +#include "sysemu/sysemu.h"
> +
> +#ifdef CONFIG_SDL
> +#if defined(__APPLE__) || defined(main)
> +#include <SDL.h>
> +int main(int argc, char **argv)
> +{
> +    return qemu_main(argc, argv, NULL);
> +}
> +#undef main
> +#define main qemu_main
> +#endif
> +#endif /* CONFIG_SDL */
> +
> +#ifdef CONFIG_COCOA
> +#undef main
> +#define main qemu_main
> +#endif /* CONFIG_COCOA */
> +
> +int main(int argc, char **argv, char **envp)
> +{
> +    qemu_init(argc, argv, envp);
> +    qemu_main_loop();
> +    qemu_cleanup();
> +
> +    return 0;
> +}
<snip>

Can we put the main in a project appropriate sub-directory so it's on
the same order as linux-user/main.c?

I guess the new directory could be "softmmu" which matches the directory
or "system" which matches the binary name. I'd lean towards the latter
as softmmu is very specifically not this bit.

-- 
Alex Bennée