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