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expand comment about FAST_FUNC
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@ -97,9 +97,15 @@
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# endif
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#endif
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/* FAST_FUNC is a qualifier which (possibly) makes function call faster
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* and/or smaller by using modified ABI. It is usually only needed
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* on non-static, busybox internal functions. Recent versions of gcc
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* optimize statics automatically. FAST_FUNC on static is required
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* only if you need to match a function pointer's type */
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#if __GNUC_PREREQ(3,0) && defined(i386)
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/* || defined(__x86_64__)? */
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# define FAST_FUNC __attribute__((regparm(3)))
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/* #elif ... - add your favorite arch today! */
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#else
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# define FAST_FUNC
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#endif
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@ -145,8 +151,9 @@
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/* ---- Unaligned access ------------------------------------ */
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/* parameter is supposed to be an uint32_t* ptr */
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#if defined(i386) || defined(__x86_64__) /* + other arches? */
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#if defined(i386) || defined(__x86_64__)
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#define get_unaligned_u32p(u32p) (*(u32p))
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/* #elif ... - add your favorite arch today! */
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#else
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/* performs reasonably well (gcc usually inlines memcpy here) */
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#define get_unaligned_u32p(u32p) ({ uint32_t __t; memcpy(&__t, (u32p), 4); __t; })
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