Initial revision

From-SVN: r124

gcc/ginclude/va-i860.h

+/* Note:  We must use the name __builtin_savregs.  GCC attaches special
+   significance to that name.  In particular, regardless of where in a
+   function __builtin_saveregs is called, GCC moves the call up to the
+   very start of the function.  */
+
+#if !defined(_STDARG_H)
+
+/* varargs support */
+
+#define va_alist __builtin_va_alist
+
+#define va_dcl
+
+#define va_start(pvar) ((pvar) = * (va_list *) __builtin_saveregs ())
+
+#else /* ANSI stdarg.h */
+/* Note that CUMULATIVE_ARGS elements are measured in bytes on the i860,
+   so we divide by 4 to get # of registers.  */
+#define va_start(pvar, firstarg) \
+ ((pvar) = *(va_list *) __builtin_saveregs (),			\
+  (pvar).__ireg_used = __builtin_args_info (0) / 4,		\
+  (pvar).__freg_used = __builtin_args_info (1) / 4,		\
+  (pvar).__mem_ptr = __builtin_next_arg ())
+
+#endif /* !defined(_STDARG_H)  ... varargs support */
+
+
+typedef union {
+  float		__freg[8];
+  double	__dreg[4];
+} __f_regs;
+
+typedef struct {
+#ifdef __SVR4__
+  __f_regs __float_regs; long __ireg[12];
+#else /* pre-SVR4 */
+  long __ireg[12]; __f_regs __float_regs;
+#endif
+} __va_saved_regs;
+
+#ifndef _VA_LIST
+#define _VA_LIST
+#define __GNU_VA_LIST	/* Field names were properly prefixed with `__'.  */
+
+typedef struct {
+#ifdef __SVR4__
+  unsigned	__ireg_used;	/* How many int regs consumed 'til now? */
+  unsigned	__freg_used;	/* How many flt regs consumed 'til now? */
+  __va_saved_regs *__reg_base;	/* Address of where we stored the regs. */
+  long *	__mem_ptr;	/* Address of memory overflow args area. */
+#else /* pre-SVR4 */
+  __va_saved_regs *__reg_base;	/* Address of where we stored the regs. */
+  long *	__mem_ptr;	/* Address of memory overflow args area. */
+  unsigned	__ireg_used;	/* How many int regs consumed 'til now? */
+  unsigned	__freg_used;	/* How many flt regs consumed 'til now? */
+#endif
+} va_list;
+
+#endif /* !defined(_VA_LIST) */
+
+#define va_end(__va)
+
+/* Values returned by __builtin_classify_type.  */
+
+enum {
+  __no_type_class = -1,
+  __void_type_class,
+  __integer_type_class,
+  __char_type_class,
+  __enumeral_type_class,
+  __boolean_type_class,
+  __pointer_type_class,
+  __reference_type_class,
+  __offset_type_class,
+  __real_type_class,
+  __complex_type_class,
+  __function_type_class,
+  __method_type_class,
+  __record_type_class,
+  __union_type_class,
+  __array_type_class,
+  __string_type_class,
+  __set_type_class,
+  __file_type_class,
+  __lang_type_class
+};
+
+#define __NUM_PARM_FREGS	8
+#define __NUM_PARM_IREGS	12
+
+#define __savereg(__va) (__va.__reg_base)
+
+/* This macro works both for SVR4 and pre-SVR4 environments.  */
+
+/* Note that parameters are always aligned at least to a word boundary
+   (when passed) regardless of what GCC's __alignof__ operator says.  */
+
+/* Make allowances here for adding 128-bit (long double) floats someday.  */
+
+#ifndef __GNU_VA_LIST
+#define __ireg_used ireg_used
+#define __freg_used freg_used
+#define __mem_ptr mem_ptr
+#define __reg_base reg_base
+#endif
+
+#define va_arg(__va, __type)						\
+(* (__type *)								\
+({									\
+  register void *__rv;  /* result value */				\
+  register unsigned __align;						\
+  switch (__builtin_classify_type (* (__type *) 0))			\
+    {									\
+    case __real_type_class:						\
+      switch (sizeof (__type))						\
+	{								\
+	  case sizeof (float):						\
+	  case sizeof (double):						\
+	    if (__va.__freg_used < __NUM_PARM_FREGS - 1)		\
+	      {								\
+	        if ((__va.__freg_used & 1) != 0)			\
+	          __va.__freg_used++;	/* skip odd */			\
+	        __rv = &__savereg(__va)->__float_regs.__freg[__va.__freg_used];\
+		__va.__freg_used += 2;					\
+	      }								\
+	    else							\
+	      {								\
+	        if ((((unsigned) __va.__mem_ptr) & (sizeof(double)-1)) != 0) \
+	          __va.__mem_ptr++;	/* skip odd */			\
+	        __rv = __va.__mem_ptr;					\
+	        __va.__mem_ptr += 2;					\
+	      }								\
+	    if (sizeof (__type) == sizeof (float))			\
+	      {								\
+	        *((float *) __rv) = *((double *) __rv);			\
+		*(((long *) __rv) + 1) = 0xfff00001;			\
+	      }								\
+	    break;							\
+	  default:							\
+	    abort ();							\
+	}								\
+      break;								\
+    case __void_type_class:						\
+    case __integer_type_class:						\
+    case __char_type_class:						\
+    case __enumeral_type_class:						\
+    case __boolean_type_class:						\
+    case __pointer_type_class:						\
+    case __reference_type_class:					\
+    case __offset_type_class:						\
+      if (sizeof (__type) <= 4)						\
+	{								\
+          __rv = (__va.__ireg_used < __NUM_PARM_IREGS			\
+	          ? (&__savereg(__va)->__ireg[__va.__ireg_used++])	\
+	          : __va.__mem_ptr++);					\
+	  break;							\
+	}								\
+      else if (__va.__ireg_used + sizeof (__type) / 4 <= __NUM_PARM_IREGS) \
+	{								\
+	  __rv = &__savereg(__va)->__ireg[__va.__ireg_used];		\
+	  __va.__ireg_used += sizeof (__type) / 4;			\
+          break;							\
+	}								\
+      /* Fall through to fetch from memory.  */				\
+    case __record_type_class:						\
+    case __union_type_class:						\
+      __align = (__alignof__ (__type) < sizeof (long)			\
+		 ? sizeof (long)					\
+		 : __alignof__ (__type));				\
+      __va.__mem_ptr							\
+	= (long *)							\
+	  ((((unsigned) __va.__mem_ptr) + (__align-1)) & ~(__align-1));	\
+      __rv = __va.__mem_ptr;						\
+      __va.__mem_ptr							\
+	+= ((sizeof (__type) + sizeof (long) - 1) / sizeof (long));	\
+      break;								\
+    case __complex_type_class:						\
+    case __function_type_class:						\
+    case __method_type_class:						\
+    case __array_type_class:						\
+    case __string_type_class:						\
+    case __set_type_class:						\
+    case __file_type_class:						\
+    case __lang_type_class:						\
+    case __no_type_class:						\
+    default:								\
+	abort ();							\
+    }									\
+  __rv;									\
+}))
+