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Re: Improvements to several Lang.cpp functions [message #20399 is a reply to message #20386]

Tue, 17 March 2009 03:37

Novo
Messages: 1358
Registered: December 2006

Ultimate Contributor

I don't insist on using alloca(). Smile

I'm pretty sure alloca() doesn't exist on gaming consoles, but it exists in msvc, glibc (Linux and BSD).

Below is an implementation of alloca(), which I found in GLIBC.

# define alloca(size)	__builtin_alloca (size)

#ifndef NO_UNDERSCORES
#define __builtin_alloca ___builtin_alloca
#endif

ENTRY (__builtin_alloca)
	sub %sp, %o0, %sp	/* Push some stack space.  */
	retl			/* Return; the returned buffer leaves 96 */
	add %sp, 96, %o0	/* bytes of register save area at the top. */
END (__builtin_alloca)

IMHO, using of alloca() is just safer and cleaner. But that is completely up to you.

Regards,
Novo

[Updated on: Tue, 17 March 2009 03:38]

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