mirror of
https://github.com/mirror/tinycc.git
synced 2025-01-05 04:40:06 +08:00
2a0167adfe
tccgen.c:
- cleanup __builtin_... stuff
- merge __attribute((alias("sym"))) with __asm__("sym")
Now one cannot have both, however for alias underscores are
added if enabled. For __asm__ they aren't.
tccpp.c:
- extend tcc_predefs accordingly. Was generated with
'cd tests/misc && tcc -run c2str.c tcc_predef.h tcc_predefs'
xxx-gen.c:
- move bcheck setjmp test to tccgen.c:gbound_args()
i386-gen.c:
- create win32 compatible stack space for big structures
tcctest.c:
- some cleanup + nicer output
112 lines
4.4 KiB
C
112 lines
4.4 KiB
C
#if defined __x86_64__
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#ifndef _WIN64
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/* GCC compatible definition of va_list. */
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/* This should be in sync with the declaration in our lib/libtcc1.c */
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typedef struct {
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unsigned gp_offset, fp_offset;
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union {
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unsigned overflow_offset;
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char *overflow_arg_area;
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};
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char *reg_save_area;
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} __builtin_va_list[1];
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void *__va_arg(__builtin_va_list ap, int arg_type, int size, int align);
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#define __builtin_va_start(ap, last) \
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(*(ap) = *(__builtin_va_list)((char*)__builtin_frame_address(0) - 24))
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#define __builtin_va_arg(ap, t) \
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(*(t *)(__va_arg(ap, __builtin_va_arg_types(t), sizeof(t), __alignof__(t))))
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#define __builtin_va_copy(dest, src) (*(dest) = *(src))
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#else /* _WIN64 */
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typedef char *__builtin_va_list;
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#define __builtin_va_arg(ap, t) ((sizeof(t) > 8 || (sizeof(t) & (sizeof(t) - 1))) \
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? **(t **)((ap += 8) - 8) : *(t *)((ap += 8) - 8))
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#endif
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#elif defined __arm__
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typedef char *__builtin_va_list;
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#define _tcc_alignof(type) ((int)&((struct {char c;type x;} *)0)->x)
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#define _tcc_align(addr,type) (((unsigned)addr + _tcc_alignof(type) - 1) \
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& ~(_tcc_alignof(type) - 1))
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#define __builtin_va_start(ap,last) (ap = ((char *)&(last)) + ((sizeof(last)+3)&~3))
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#define __builtin_va_arg(ap,type) (ap = (void *) ((_tcc_align(ap,type)+sizeof(type)+3) \
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&~3), *(type *)(ap - ((sizeof(type)+3)&~3)))
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#elif defined __aarch64__
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typedef struct {
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void *__stack, *__gr_top, *__vr_top;
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int __gr_offs, __vr_offs;
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} __builtin_va_list;
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#elif defined __riscv
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typedef char *__builtin_va_list;
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#define __va_reg_size (__riscv_xlen >> 3)
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#define _tcc_align(addr,type) (((unsigned long)addr + __alignof__(type) - 1) \
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& -(__alignof__(type)))
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#define __builtin_va_arg(ap,type) (*(sizeof(type) > (2*__va_reg_size) ? *(type **)((ap += __va_reg_size) - __va_reg_size) : (ap = (va_list)(_tcc_align(ap,type) + (sizeof(type)+__va_reg_size - 1)& -__va_reg_size), (type *)(ap - ((sizeof(type)+ __va_reg_size - 1)& -__va_reg_size)))))
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#else /* __i386__ */
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typedef char *__builtin_va_list;
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#define __builtin_va_start(ap,last) (ap = ((char *)&(last)) + ((sizeof(last)+3)&~3))
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#define __builtin_va_arg(ap,t) (*(t*)((ap+=(sizeof(t)+3)&~3)-((sizeof(t)+3)&~3)))
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#endif
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#define __builtin_va_end(ap) (void)(ap)
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#ifndef __builtin_va_copy
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# define __builtin_va_copy(dest, src) (dest) = (src)
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#endif
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/* TCC BBUILTIN AND BOUNDS ALIASES */
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#ifdef __BOUNDS_CHECKING_ON
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# define __BUILTIN(ret,name,params) \
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ret __builtin_##name params __attribute__((alias("__bound_" #name)));
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# define __BOUND(ret,name,params) \
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ret name params __attribute__((alias("__bound_" #name)));
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#else
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# define __BUILTIN(ret,name,params) \
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ret __builtin_##name params __attribute__((alias(#name)));
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# define __BOUND(ret,name,params)
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#endif
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# define __BOTH(ret,name,params) \
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__BUILTIN(ret,name,params) __BOUND(ret,name,params)
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__BOTH(void*, memcpy, (void *, const void*, __SIZE_TYPE__))
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__BOTH(void*, memmove, (void *, const void*, __SIZE_TYPE__))
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__BOTH(void*, memset, (void *, int, __SIZE_TYPE__))
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__BOTH(int, memcmp, (const void *, const void*, __SIZE_TYPE__))
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__BOTH(__SIZE_TYPE__, strlen, (const char *))
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__BOTH(char*, strcpy, (char *, const char *))
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__BOTH(char*, strncpy, (char *, const char*, __SIZE_TYPE__))
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__BOTH(int, strcmp, (const char*, const char*))
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__BOTH(int, strncmp, (const char*, const char*, __SIZE_TYPE__))
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__BOTH(char*, strcat, (char*, const char*))
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__BOTH(char*, strchr, (const char*, int))
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__BOTH(char*, strdup, (const char*))
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#ifdef _WIN32
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#define __MAYBE_REDIR __BOTH
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#else // HAVE MALLOC_REDIR
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#define __MAYBE_REDIR __BUILTIN
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#endif
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__MAYBE_REDIR(void*, malloc, (__SIZE_TYPE__))
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__MAYBE_REDIR(void*, realloc, (void *, __SIZE_TYPE__))
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__MAYBE_REDIR(void*, calloc, (__SIZE_TYPE__, __SIZE_TYPE__))
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__MAYBE_REDIR(void*, memalign, (__SIZE_TYPE__, __SIZE_TYPE__))
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__MAYBE_REDIR(void, free, (void*))
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#if defined __i386__ || defined __x86_64__
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__BOTH(void*, alloca, (__SIZE_TYPE__))
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#endif
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__BUILTIN(void, abort, (void))
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__BOUND(int, longjmp, ())
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#ifndef _WIN32
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__BOUND(void*, mmap, ())
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__BOUND(void*, munmap, ())
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#endif
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#undef __BUILTIN
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#undef __BOUND
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#undef __BOTH
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#undef __MAYBE_REDIR
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