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  1. #ifndef _STDARG_H
  2. #define _STDARG_H
  3.  
  4. #ifdef __x86_64__
  5. #ifndef _WIN64
  6.  
  7. //This should be in sync with the declaration on our lib/libtcc1.c
  8. /* GCC compatible definition of va_list. */
  9. typedef struct {
  10.     unsigned int gp_offset;
  11.     unsigned int fp_offset;
  12.     union {
  13.         unsigned int overflow_offset;
  14.         char *overflow_arg_area;
  15.     };
  16.     char *reg_save_area;
  17. } __va_list_struct;
  18.  
  19. typedef __va_list_struct va_list[1];
  20.  
  21. void __va_start(__va_list_struct *ap, void *fp);
  22. void *__va_arg(__va_list_struct *ap, int arg_type, int size, int align);
  23.  
  24. #define va_start(ap, last) __va_start(ap, __builtin_frame_address(0))
  25. #define va_arg(ap, type)                                                \
  26.     (*(type *)(__va_arg(ap, __builtin_va_arg_types(type), sizeof(type), __alignof__(type))))
  27. #define va_copy(dest, src) (*(dest) = *(src))
  28. #define va_end(ap)
  29.  
  30. #else /* _WIN64 */
  31. typedef char *va_list;
  32. #define va_start(ap,last) __builtin_va_start(ap,last)
  33. #define va_arg(ap,type) (ap += 8, sizeof(type)<=8 ? *(type*)ap : **(type**)ap)
  34. #define va_copy(dest, src) ((dest) = (src))
  35. #define va_end(ap)
  36. #endif
  37.  
  38. #elif __arm__
  39. typedef char *va_list;
  40. #define _tcc_alignof(type) ((int)&((struct {char c;type x;} *)0)->x)
  41. #define _tcc_align(addr,type) (((unsigned)addr + _tcc_alignof(type) - 1) \
  42.                                & ~(_tcc_alignof(type) - 1))
  43. #define va_start(ap,last) ap = ((char *)&(last)) + ((sizeof(last)+3)&~3)
  44. #define va_arg(ap,type) (ap = (void *) ((_tcc_align(ap,type)+sizeof(type)+3) \
  45.                         &~3), *(type *)(ap - ((sizeof(type)+3)&~3)))
  46. #define va_copy(dest, src) (dest) = (src)
  47. #define va_end(ap)
  48.  
  49. #elif defined(__aarch64__)
  50. typedef struct {
  51.     void *__stack;
  52.     void *__gr_top;
  53.     void *__vr_top;
  54.     int   __gr_offs;
  55.     int   __vr_offs;
  56. } va_list;
  57. #define va_start(ap, last) __va_start(ap, last)
  58. #define va_arg(ap, type) __va_arg(ap, type)
  59. #define va_end(ap)
  60. #define va_copy(dest, src) ((dest) = (src))
  61.  
  62. #else /* __i386__ */
  63. typedef char *va_list;
  64. /* only correct for i386 */
  65. #define va_start(ap,last) ap = ((char *)&(last)) + ((sizeof(last)+3)&~3)
  66. #define va_arg(ap,type) (ap += (sizeof(type)+3)&~3, *(type *)(ap - ((sizeof(type)+3)&~3)))
  67. #define va_copy(dest, src) (dest) = (src)
  68. #define va_end(ap)
  69. #endif
  70.  
  71. /* fix a buggy dependency on GCC in libio.h */
  72. typedef va_list __gnuc_va_list;
  73. #define _VA_LIST_DEFINED
  74.  
  75. #endif /* _STDARG_H */
  76.