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74 lines
2.0 KiB
74 lines
2.0 KiB
4 years ago
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/* internal.h
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Internal definitions used by Expat. This is not needed to compile
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client code.
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The following calling convention macros are defined for frequently
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called functions:
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FASTCALL - Used for those internal functions that have a simple
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body and a low number of arguments and local variables.
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PTRCALL - Used for functions called though function pointers.
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PTRFASTCALL - Like PTRCALL, but for low number of arguments.
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inline - Used for selected internal functions for which inlining
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may improve performance on some platforms.
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Note: Use of these macros is based on judgement, not hard rules,
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and therefore subject to change.
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*/
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#if defined(__GNUC__) && defined(__i386__)
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/* We'll use this version by default only where we know it helps.
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regparm() generates warnings on Solaris boxes. See SF bug #692878.
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Instability reported with egcs on a RedHat Linux 7.3.
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Let's comment out:
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#define FASTCALL __attribute__((stdcall, regparm(3)))
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and let's try this:
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*/
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#define FASTCALL __attribute__((regparm(3)))
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#define PTRFASTCALL __attribute__((regparm(3)))
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#endif
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/* Using __fastcall seems to have an unexpected negative effect under
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MS VC++, especially for function pointers, so we won't use it for
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now on that platform. It may be reconsidered for a future release
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if it can be made more effective.
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Likely reason: __fastcall on Windows is like stdcall, therefore
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the compiler cannot perform stack optimizations for call clusters.
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*/
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/* Make sure all of these are defined if they aren't already. */
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#ifndef FASTCALL
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#define FASTCALL
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#endif
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#ifndef PTRCALL
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#define PTRCALL
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#endif
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#ifndef PTRFASTCALL
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#define PTRFASTCALL
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#endif
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#ifndef XML_MIN_SIZE
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#if !defined(__cplusplus) && !defined(inline)
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#ifdef __GNUC__
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#define inline __inline
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#endif /* __GNUC__ */
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#endif
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#endif /* XML_MIN_SIZE */
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#ifdef __cplusplus
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#define inline inline
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#else
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#ifndef inline
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#define inline
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#endif
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#endif
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