1 | #ifndef _STDARG_H
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2 | #define _STDARG_H
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3 |
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4 | #ifdef __x86_64__
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5 | #ifndef _WIN64
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6 |
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7 | //This should be in sync with the declaration on our lib/libtcc1.c
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8 | /* GCC compatible definition of va_list. */
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9 | typedef struct {
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10 | unsigned int gp_offset;
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11 | unsigned int fp_offset;
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12 | union {
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13 | unsigned int overflow_offset;
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14 | char *overflow_arg_area;
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15 | };
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16 | char *reg_save_area;
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17 | } __va_list_struct;
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18 |
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19 | typedef __va_list_struct va_list[1];
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20 |
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21 | void __va_start(__va_list_struct *ap, void *fp);
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22 | void *__va_arg(__va_list_struct *ap, int arg_type, int size, int align);
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23 |
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24 | #define va_start(ap, last) __va_start(ap, __builtin_frame_address(0))
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25 | #define va_arg(ap, type) \
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26 | (*(type *)(__va_arg(ap, __builtin_va_arg_types(type), sizeof(type), __alignof__(type))))
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27 | #define va_copy(dest, src) (*(dest) = *(src))
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28 | #define va_end(ap)
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29 |
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30 | /* avoid conflicting definition for va_list on Macs. */
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31 | #define _VA_LIST_T
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32 |
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33 | #else /* _WIN64 */
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34 | typedef char *va_list;
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35 | #define va_start(ap,last) __builtin_va_start(ap,last)
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36 | #define va_arg(ap, t) ((sizeof(t) > 8 || (sizeof(t) & (sizeof(t) - 1))) \
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37 | ? **(t **)((ap += 8) - 8) : *(t *)((ap += 8) - 8))
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38 | #define va_copy(dest, src) ((dest) = (src))
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39 | #define va_end(ap)
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40 | #endif
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41 |
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42 | #elif __arm__
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43 | typedef char *va_list;
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44 | #define _tcc_alignof(type) ((int)&((struct {char c;type x;} *)0)->x)
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45 | #define _tcc_align(addr,type) (((unsigned)addr + _tcc_alignof(type) - 1) \
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46 | & ~(_tcc_alignof(type) - 1))
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47 | #define va_start(ap,last) ap = ((char *)&(last)) + ((sizeof(last)+3)&~3)
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48 | #define va_arg(ap,type) (ap = (void *) ((_tcc_align(ap,type)+sizeof(type)+3) \
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49 | &~3), *(type *)(ap - ((sizeof(type)+3)&~3)))
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50 | #define va_copy(dest, src) (dest) = (src)
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51 | #define va_end(ap)
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52 |
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53 | #elif defined(__aarch64__)
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54 | typedef struct {
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55 | void *__stack;
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56 | void *__gr_top;
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57 | void *__vr_top;
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58 | int __gr_offs;
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59 | int __vr_offs;
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60 | } va_list;
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61 | #define va_start(ap, last) __va_start(ap, last)
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62 | #define va_arg(ap, type) __va_arg(ap, type)
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63 | #define va_end(ap)
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64 | #define va_copy(dest, src) ((dest) = (src))
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65 |
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66 | #else /* __i386__ */
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67 | typedef char *va_list;
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68 | /* only correct for i386 */
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69 | #define va_start(ap,last) ap = ((char *)&(last)) + ((sizeof(last)+3)&~3)
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70 | #define va_arg(ap,type) (ap += (sizeof(type)+3)&~3, *(type *)(ap - ((sizeof(type)+3)&~3)))
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71 | #define va_copy(dest, src) (dest) = (src)
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72 | #define va_end(ap)
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73 | #endif
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74 |
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75 | /* fix a buggy dependency on GCC in libio.h */
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76 | typedef va_list __gnuc_va_list;
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77 | #define _VA_LIST_DEFINED
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78 |
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79 | #endif /* _STDARG_H */
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