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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4818 | Serge | 1 | /* internal.h |
| 2 | |||
| 3 | Internal definitions used by Expat. This is not needed to compile |
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| 4 | client code. |
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| 5 | |||
| 6 | The following calling convention macros are defined for frequently |
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| 7 | called functions: |
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| 8 | |||
| 9 | FASTCALL - Used for those internal functions that have a simple |
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| 10 | body and a low number of arguments and local variables. |
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| 11 | |||
| 12 | PTRCALL - Used for functions called though function pointers. |
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| 13 | |||
| 14 | PTRFASTCALL - Like PTRCALL, but for low number of arguments. |
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| 15 | |||
| 16 | inline - Used for selected internal functions for which inlining |
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| 17 | may improve performance on some platforms. |
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| 18 | |||
| 19 | Note: Use of these macros is based on judgement, not hard rules, |
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| 20 | and therefore subject to change. |
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| 21 | */ |
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| 22 | |||
| 23 | #if defined(__GNUC__) && defined(__i386__) && !defined(__MINGW32__) |
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| 24 | /* We'll use this version by default only where we know it helps. |
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| 25 | |||
| 26 | regparm() generates warnings on Solaris boxes. See SF bug #692878. |
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| 27 | |||
| 28 | Instability reported with egcs on a RedHat Linux 7.3. |
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| 29 | Let's comment out: |
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| 30 | #define FASTCALL __attribute__((stdcall, regparm(3))) |
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| 31 | and let's try this: |
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| 32 | */ |
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| 33 | #define FASTCALL __attribute__((regparm(3))) |
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| 34 | #define PTRFASTCALL __attribute__((regparm(3))) |
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| 35 | #endif |
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| 36 | |||
| 37 | /* Using __fastcall seems to have an unexpected negative effect under |
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| 38 | MS VC++, especially for function pointers, so we won't use it for |
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| 39 | now on that platform. It may be reconsidered for a future release |
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| 40 | if it can be made more effective. |
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| 41 | Likely reason: __fastcall on Windows is like stdcall, therefore |
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| 42 | the compiler cannot perform stack optimizations for call clusters. |
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| 43 | */ |
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| 44 | |||
| 45 | /* Make sure all of these are defined if they aren't already. */ |
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| 46 | |||
| 47 | #ifndef FASTCALL |
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| 48 | #define FASTCALL |
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| 49 | #endif |
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| 50 | |||
| 51 | #ifndef PTRCALL |
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| 52 | #define PTRCALL |
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| 53 | #endif |
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| 54 | |||
| 55 | #ifndef PTRFASTCALL |
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| 56 | #define PTRFASTCALL |
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| 57 | #endif |
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| 58 | |||
| 59 | #ifndef XML_MIN_SIZE |
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| 60 | #if !defined(__cplusplus) && !defined(inline) |
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| 61 | #ifdef __GNUC__ |
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| 62 | #define inline __inline |
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| 63 | #endif /* __GNUC__ */ |
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| 64 | #endif |
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| 65 | #endif /* XML_MIN_SIZE */ |
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| 66 | |||
| 67 | #ifdef __cplusplus |
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| 68 | #define inline inline |
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| 69 | #else |
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| 70 | #ifndef inline |
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| 71 | #define inline |
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| 72 | #endif |
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| 73 | #endif |