| 1 | /* ---------------------------------------- */ |
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| 2 | /* VARARGS for MIPS/GNU CC */ |
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| 3 | /* */ |
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| 4 | /* */ |
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| 5 | /* */ |
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| 6 | /* */ |
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| 7 | /* ---------------------------------------- */ |
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| 8 | |
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| 9 | |
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| 10 | /* These macros implement varargs for GNU C--either traditional or ANSI. */ |
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| 11 | |
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| 12 | /* Define __gnuc_va_list. */ |
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| 13 | |
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| 14 | #ifndef __GNUC_VA_LIST |
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| 15 | #define __GNUC_VA_LIST |
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| 16 | typedef char * __gnuc_va_list; |
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| 17 | #endif /* not __GNUC_VA_LIST */ |
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| 18 | |
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| 19 | /* If this is for internal libc use, don't define anything but |
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| 20 | __gnuc_va_list. */ |
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| 21 | #if defined (_STDARG_H) || defined (_VARARGS_H) |
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| 22 | |
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| 23 | /* In GCC version 2, we want an ellipsis at the end of the declaration |
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| 24 | of the argument list. GCC version 1 can't parse it. */ |
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| 25 | |
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| 26 | #if __GNUC__ > 1 |
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| 27 | #define __va_ellipsis ... |
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| 28 | #else |
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| 29 | #define __va_ellipsis |
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| 30 | #endif |
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| 31 | |
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| 32 | #ifdef __mips64 |
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| 33 | #define __va_rounded_size(__TYPE) \ |
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| 34 | (((sizeof (__TYPE) + 8 - 1) / 8) * 8) |
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| 35 | #else |
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| 36 | #define __va_rounded_size(__TYPE) \ |
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| 37 | (((sizeof (__TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) |
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| 38 | #endif |
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| 39 | |
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| 40 | /* Get definitions for _MIPS_SIM_ABI64 etc. */ |
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| 41 | #ifdef _MIPS_SIM |
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| 42 | #include <sgidefs.h> |
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| 43 | #endif |
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| 44 | |
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| 45 | #ifdef _STDARG_H |
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| 46 | #define va_start(__AP, __LASTARG) \ |
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| 47 | (__AP = (__gnuc_va_list) __builtin_next_arg (__LASTARG)) |
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| 48 | |
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| 49 | #else |
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| 50 | #define va_alist __builtin_va_alist |
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| 51 | #ifdef __mips64 |
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| 52 | /* This assumes that `long long int' is always a 64 bit type. */ |
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| 53 | #define va_dcl long long int __builtin_va_alist; __va_ellipsis |
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| 54 | #else |
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| 55 | #define va_dcl int __builtin_va_alist; __va_ellipsis |
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| 56 | #endif |
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| 57 | /* Need alternate code for _MIPS_SIM_ABI64. */ |
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| 58 | #if defined(_MIPS_SIM) && (_MIPS_SIM == _MIPS_SIM_ABI64) |
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| 59 | #define va_start(__AP) \ |
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| 60 | (__AP = (__gnuc_va_list) __builtin_next_arg () \ |
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| 61 | + (__builtin_args_info (2) >= 8 ? -8 : 0)) |
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| 62 | #else |
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| 63 | #define va_start(__AP) __AP = (char *) &__builtin_va_alist |
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| 64 | #endif |
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| 65 | #endif |
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| 66 | |
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| 67 | #ifndef va_end |
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| 68 | void va_end (__gnuc_va_list); /* Defined in libgcc.a */ |
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| 69 | #endif |
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| 70 | #define va_end(__AP) ((void)0) |
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| 71 | |
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| 72 | /* We cast to void * and then to TYPE * because this avoids |
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| 73 | a warning about increasing the alignment requirement. */ |
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| 74 | /* The __mips64 cases are reversed from the 32 bit cases, because the standard |
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| 75 | 32 bit calling convention left-aligns all parameters smaller than a word, |
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| 76 | whereas the __mips64 calling convention does not (and hence they are |
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| 77 | right aligned). */ |
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| 78 | #ifdef __mips64 |
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| 79 | #ifdef __MIPSEB__ |
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| 80 | #define va_arg(__AP, __type) \ |
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| 81 | ((__type *) (void *) (__AP = (char *) ((((__PTRDIFF_TYPE__)__AP + 8 - 1) & -8) \ |
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| 82 | + __va_rounded_size (__type))))[-1] |
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| 83 | #else |
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| 84 | #define va_arg(__AP, __type) \ |
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| 85 | ((__AP = (char *) ((((__PTRDIFF_TYPE__)__AP + 8 - 1) & -8) \ |
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| 86 | + __va_rounded_size (__type))), \ |
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| 87 | *(__type *) (void *) (__AP - __va_rounded_size (__type))) |
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| 88 | #endif |
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| 89 | |
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| 90 | #else /* not __mips64 */ |
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| 91 | |
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| 92 | #ifdef __MIPSEB__ |
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| 93 | /* For big-endian machines. */ |
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| 94 | #define va_arg(__AP, __type) \ |
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| 95 | ((__AP = (char *) ((__alignof__ (__type) > 4 \ |
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| 96 | ? ((int)__AP + 8 - 1) & -8 \ |
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| 97 | : ((int)__AP + 4 - 1) & -4) \ |
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| 98 | + __va_rounded_size (__type))), \ |
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| 99 | *(__type *) (void *) (__AP - __va_rounded_size (__type))) |
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| 100 | #else |
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| 101 | /* For little-endian machines. */ |
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| 102 | #define va_arg(__AP, __type) \ |
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| 103 | ((__type *) (void *) (__AP = (char *) ((__alignof__(__type) > 4 \ |
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| 104 | ? ((int)__AP + 8 - 1) & -8 \ |
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| 105 | : ((int)__AP + 4 - 1) & -4) \ |
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| 106 | + __va_rounded_size(__type))))[-1] |
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| 107 | #endif |
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| 108 | #endif |
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| 109 | |
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| 110 | #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */ |
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