65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* Initializer module for building the ELF shared C library. This file and
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sofini.c do the work normally done by crtbeginS.o and crtendS.o, to wrap
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the `.ctors' and `.dtors' sections so the lists are terminated, and
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calling those lists of functions. */
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#ifndef NO_CTORS_DTORS_SECTIONS
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# include <stdlib.h>
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/* See Bug #72714 for why alignment should be explicitly specified for objects
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in .{c,d}tors sections when compiling with LCC. Though it's really crucial
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for 32-bit sparc only (see Comment #5), let it be set in GCC-compatible way
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in all our modes. */
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static void (*const __CTOR_LIST__[1]) (void)
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__attribute__ ((used, section (".ctors")
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#ifdef __LCC__
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, aligned (sizeof (void *))
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#endif /* __LCC__ */
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))
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= { (void (*) (void)) -1 };
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static void (*const __DTOR_LIST__[1]) (void)
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__attribute__ ((used, section (".dtors")
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#ifdef __LCC__
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, aligned (sizeof (void *))
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#endif /* __LCC__ */
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))
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= { (void (*) (void)) -1 };
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static inline void
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run_hooks (void (*const list[]) (void))
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{
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while (*++list)
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(**list) ();
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}
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/* This function will be called from _init in init-first.c. */
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void
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__libc_global_ctors (void)
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{
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#if defined __e2k__ && defined __LCC__
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/* Take care of initializing `__cpu_info', required for Bug #89242
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workarounds in LCC atomic builtins to work properly (Bug #90227),
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explicitly since `-llcc' along with `-lgcc' aren't enclosed between
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`so{init,fini}.os' on libc.so linkage line. */
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__builtin_cpu_init_ext ();
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#endif /* __e2k__ && __LCC__ */
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/* Call constructor functions. */
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run_hooks (__CTOR_LIST__);
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}
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/* This function becomes the DT_FINI termination function
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for the C library. */
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void
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__libc_fini (void)
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{
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/* Call destructor functions. */
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run_hooks (__DTOR_LIST__);
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}
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void (*_fini_ptr) (void) __attribute__ ((section (".fini_array")))
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= &__libc_fini;
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#endif
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