Re: [patch 04/15] Generic Mutex Subsystem, add-atomic-call-func-x86_64.patch

[Zwane Mwaikambo]

On Mon, 19 Dec 2005, Ingo Molnar wrote:

> +#define atomic_dec_call_if_negative(v, fn_name)				\
> +do {									\
> +	fastcall void (*__tmp)(atomic_t *) = fn_name;			\
> +									\
> +	(void)__tmp;							\
> +	typecheck(atomic_t *, v);					\
> +									\
> +	__asm__ __volatile__(						\
> +		LOCK "decl (%%rdi)\n"  					\
> +		"js 2f\n"						\
> +		"1:\n"							\
> +		LOCK_SECTION_START("")					\
> +		"2: call "#fn_name"\n\t"				\
> +		"jmp 1b\n"						\
> +		LOCK_SECTION_END					\
> +		:							\
> +		:"D" (v)						\
> +		:"memory");						\
> +} while (0)

Hi Ingo,
	Doesn't this corrupt caller saved registers?
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