int i __attribute__ ((visibility ("hidden")));
@end smallexample
-See the ELF gABI for complete details, but the short story is
+See the ELF gABI for complete details, but the short story is:
@table @dfn
@item default
in an @code{__attribute__} will still only provide you with 8 byte
alignment. See your linker documentation for further information.
+@item cleanup (@var{cleanup_function})
+@cindex @code{cleanup} attribute
+The @code{cleanup} attribute runs a function when the variable goes
+out of scope. This attribute can only be applied to auto function
+scope variables; it may not be applied to parameters or variables
+with static storage duration. The function must take one parameter,
+a pointer to a type compatible with the variable. The return value
+of the function (if any) is ignored.
+
+If @option{-fexceptions} is enabled, then @var{cleanup_function}
+will be run during the stack unwinding that happens during the
+processing of the exception. Note that the @code{cleanup} attribute
+does not allow the exception to be caught, only to perform an action.
+It is undefined what happens if @var{cleanup_function} does not
+return normally.
+
@item common
@itemx nocommon
@cindex @code{common} attribute
@findex abort
@findex abs
@findex alloca
+@findex atan
@findex atan2
@findex atan2f
@findex atan2l
+@findex atanf
+@findex atanl
@findex bcmp
@findex bzero
+@findex cabs
+@findex cabsf
+@findex cabsl
@findex calloc
@findex ceil
@findex ceilf
@findex strrchr
@findex strspn
@findex strstr
+@findex tan
+@findex tanf
+@findex tanl
@findex trunc
@findex truncf
@findex truncl
prefixed with @code{__builtin_}, which may be used even in strict C89
mode.
-The ISO C99 functions @code{conj}, @code{conjf}, @code{conjl}, @code{creal},
-@code{crealf}, @code{creall}, @code{cimag}, @code{cimagf}, @code{cimagl},
+The ISO C99 functions
+@code{cabs}, @code{cabsf}, @code{cabsl},
+@code{conj}, @code{conjf}, @code{conjl},
+@code{creal}, @code{crealf}, @code{creall},
+@code{cimag}, @code{cimagf}, @code{cimagl},
@code{_Exit}, @code{imaxabs}, @code{llabs},
@code{nearbyint}, @code{nearbyintf}, @code{nearbyintl},
@code{round}, @code{roundf}, @code{roundl}, @code{snprintf},
except in strict ISO C90 mode (@option{-ansi} or @option{-std=c89}).
There are also built-in versions of the ISO C99 functions @code{atan2f},
-@code{atan2l}, @code{ceilf}, @code{ceill}, @code{cosf}, @code{cosl},
+@code{atan2l}, @code{atanf}, @code{atanl}, @code{ceilf}, @code{ceill},
+@code{cosf}, @code{cosl},
@code{expf}, @code{expl}, @code{fabsf}, @code{fabsl}, @code{floorf},
@code{floorl}, @code{fmodf}, @code{fmodl},
@code{logf}, @code{logl}, @code{powf}, @code{powl},
-@code{sinf}, @code{sinl}, @code{sqrtf} and @code{sqrtl}
+@code{sinf}, @code{sinl}, @code{sqrtf}, @code{sqrtl},
+@code{tanf} and @code{tanl}
that are recognized in any mode since ISO C90 reserves these names for
the purpose to which ISO C99 puts them. All these functions have
corresponding versions prefixed with @code{__builtin_}.
-The ISO C90 functions @code{abort}, @code{abs}, @code{atan2},
+The ISO C90 functions @code{abort}, @code{abs}, @code{atan}, @code{atan2},
@code{calloc}, @code{ceil}, @code{cos}, @code{exit},
@code{exp}, @code{fabs}, @code{floor}, @code{fmod},
@code{fprintf}, @code{fputs}, @code{labs}, @code{log}, @code{malloc},
@code{strcat}, @code{strchr}, @code{strcmp},
@code{strcpy}, @code{strcspn}, @code{strlen}, @code{strncat}, @code{strncmp},
@code{strncpy}, @code{strpbrk}, @code{strrchr}, @code{strspn}, @code{strstr},
-@code{vprintf} and @code{vsprintf}
+@code{tan}, @code{vprintf} and @code{vsprintf}
are all recognized as built-in functions unless
@option{-fno-builtin} is specified (or @option{-fno-builtin-@var{function}}
is specified for an individual function). All of these functions have
@menu
* Alpha Built-in Functions::
+* ARM Built-in Functions::
* X86 Built-in Functions::
* PowerPC AltiVec Built-in Functions::
@end menu
void __builtin_set_thread_pointer (void *)
@end example
+@node ARM Built-in Functions
+@subsection ARM Built-in Functions
+
+These built-in functions are available for the ARM family of
+processors, when the @option{-mcpu=iwmmxt} switch is used:
+
+@example
+typedef int __v2si __attribute__ ((__mode__ (__V2SI__)))
+
+v2si __builtin_arm_waddw (v2si, v2si)
+v2si __builtin_arm_waddw (v2si, v2si)
+v2si __builtin_arm_wsubw (v2si, v2si)
+v2si __builtin_arm_wsubw (v2si, v2si)
+v2si __builtin_arm_waddwss (v2si, v2si)
+v2si __builtin_arm_wsubwss (v2si, v2si)
+v2si __builtin_arm_wsubwss (v2si, v2si)
+v2si __builtin_arm_wsubwss (v2si, v2si)
+v2si __builtin_arm_wsubwss (v2si, v2si)
+v2si __builtin_arm_waddwus (v2si, v2si)
+v2si __builtin_arm_wsubwus (v2si, v2si)
+v2si __builtin_arm_wsubwus (v2si, v2si)
+v2si __builtin_arm_wmaxuw (v2si, v2si)
+v2si __builtin_arm_wmaxsw (v2si, v2si)
+v2si __builtin_arm_wavg2br (v2si, v2si)
+v2si __builtin_arm_wavg2hr (v2si, v2si)
+v2si __builtin_arm_wavg2b (v2si, v2si)
+v2si __builtin_arm_wavg2h (v2si, v2si)
+v2si __builtin_arm_waccb (v2si)
+v2si __builtin_arm_wacch (v2si)
+v2si __builtin_arm_waccw (v2si)
+v2si __builtin_arm_wmacs (v2si, v2si, v2si)
+v2si __builtin_arm_wmacsz (v2si, v2si, v2si)
+v2si __builtin_arm_wmacu (v2si, v2si, v2si)
+v2si __builtin_arm_wmacuz (v2si, v2si)
+v2si __builtin_arm_wsadb (v2si, v2si)
+v2si __builtin_arm_wsadbz (v2si, v2si)
+v2si __builtin_arm_wsadh (v2si, v2si)
+v2si __builtin_arm_wsadhz (v2si, v2si)
+v2si __builtin_arm_walign (v2si, v2si)
+v2si __builtin_arm_tmia (v2si, int, int)
+v2si __builtin_arm_tmiaph (v2si, int, int)
+v2si __builtin_arm_tmiabb (v2si, int, int)
+v2si __builtin_arm_tmiabt (v2si, int, int)
+v2si __builtin_arm_tmiatb (v2si, int, int)
+v2si __builtin_arm_tmiatt (v2si, int, int)
+int __builtin_arm_tmovmskb (v2si)
+int __builtin_arm_tmovmskh (v2si)
+int __builtin_arm_tmovmskw (v2si)
+v2si __builtin_arm_wmadds (v2si, v2si)
+v2si __builtin_arm_wmaddu (v2si, v2si)
+v2si __builtin_arm_wpackhss (v2si, v2si)
+v2si __builtin_arm_wpackwss (v2si, v2si)
+v2si __builtin_arm_wpackdss (v2si, v2si)
+v2si __builtin_arm_wpackhus (v2si, v2si)
+v2si __builtin_arm_wpackwus (v2si, v2si)
+v2si __builtin_arm_wpackdus (v2si, v2si)
+v2si __builtin_arm_waddb (v2si, v2si)
+v2si __builtin_arm_waddh (v2si, v2si)
+v2si __builtin_arm_waddw (v2si, v2si)
+v2si __builtin_arm_waddbss (v2si, v2si)
+v2si __builtin_arm_waddhss (v2si, v2si)
+v2si __builtin_arm_waddwss (v2si, v2si)
+v2si __builtin_arm_waddbus (v2si, v2si)
+v2si __builtin_arm_waddhus (v2si, v2si)
+v2si __builtin_arm_waddwus (v2si, v2si)
+v2si __builtin_arm_wsubb (v2si, v2si)
+v2si __builtin_arm_wsubh (v2si, v2si)
+v2si __builtin_arm_wsubw (v2si, v2si)
+v2si __builtin_arm_wsubbss (v2si, v2si)
+v2si __builtin_arm_wsubhss (v2si, v2si)
+v2si __builtin_arm_wsubwss (v2si, v2si)
+v2si __builtin_arm_wsubbus (v2si, v2si)
+v2si __builtin_arm_wsubhus (v2si, v2si)
+v2si __builtin_arm_wsubwus (v2si, v2si)
+v2si __builtin_arm_wand (v2si, v2si)
+v2si __builtin_arm_wandn (v2si, v2si)
+v2si __builtin_arm_wor (v2si, v2si)
+v2si __builtin_arm_wxor (v2si, v2si)
+v2si __builtin_arm_wcmpeqb (v2si, v2si)
+v2si __builtin_arm_wcmpeqh (v2si, v2si)
+v2si __builtin_arm_wcmpeqw (v2si, v2si)
+v2si __builtin_arm_wcmpgtub (v2si, v2si)
+v2si __builtin_arm_wcmpgtuh (v2si, v2si)
+v2si __builtin_arm_wcmpgtuw (v2si, v2si)
+v2si __builtin_arm_wcmpgtsb (v2si, v2si)
+v2si __builtin_arm_wcmpgtsh (v2si, v2si)
+v2si __builtin_arm_wcmpgtsw (v2si, v2si)
+int __builtin_arm_textrmsb (v2si, int)
+int __builtin_arm_textrmsh (v2si, int)
+int __builtin_arm_textrmsw (v2si, int)
+int __builtin_arm_textrmub (v2si, int)
+int __builtin_arm_textrmuh (v2si, int)
+int __builtin_arm_textrmuw (v2si, int)
+v2si __builtin_arm_tinsrb (v2si, int, int)
+v2si __builtin_arm_tinsrh (v2si, int, int)
+v2si __builtin_arm_tinsrw (v2si, int, int)
+v2si __builtin_arm_wmaxsw (v2si, v2si)
+v2si __builtin_arm_wmaxsh (v2si, v2si)
+v2si __builtin_arm_wmaxsb (v2si, v2si)
+v2si __builtin_arm_wmaxuw (v2si, v2si)
+v2si __builtin_arm_wmaxuh (v2si, v2si)
+v2si __builtin_arm_wmaxub (v2si, v2si)
+v2si __builtin_arm_wminsw (v2si, v2si)
+v2si __builtin_arm_wminsh (v2si, v2si)
+v2si __builtin_arm_wminsb (v2si, v2si)
+v2si __builtin_arm_wminuw (v2si, v2si)
+v2si __builtin_arm_wminuh (v2si, v2si)
+v2si __builtin_arm_wminub (v2si, v2si)
+v2si __builtin_arm_wmuluh (v2si, v2si)
+v2si __builtin_arm_wmulsh (v2si, v2si)
+v2si __builtin_arm_wmulul (v2si, v2si)
+v2si __builtin_arm_wshufh (v2si, int)
+v2si __builtin_arm_wsllh (v2si, v2si)
+v2si __builtin_arm_wsllw (v2si, v2si)
+v2si __builtin_arm_wslld (v2si, v2si)
+v2si __builtin_arm_wsrah (v2si, v2si)
+v2si __builtin_arm_wsraw (v2si, v2si)
+v2si __builtin_arm_wsrad (v2si, v2si)
+v2si __builtin_arm_wsrlh (v2si, v2si)
+v2si __builtin_arm_wsrlw (v2si, v2si)
+v2si __builtin_arm_wsrld (v2si, v2si)
+v2si __builtin_arm_wrorh (v2si, v2si)
+v2si __builtin_arm_wrorw (v2si, v2si)
+v2si __builtin_arm_wrord (v2si, v2si)
+v2si __builtin_arm_wsllhi (v2si, int)
+v2si __builtin_arm_wsllwi (v2si, int)
+v2si __builtin_arm_wslldi (v2si, v2si)
+v2si __builtin_arm_wsrahi (v2si, int)
+v2si __builtin_arm_wsrawi (v2si, int)
+v2si __builtin_arm_wsradi (v2si, v2si)
+v2si __builtin_arm_wsrlwi (v2si, int)
+v2si __builtin_arm_wsrldi (v2si, int)
+v2si __builtin_arm_wrorhi (v2si, int)
+v2si __builtin_arm_wrorwi (v2si, int)
+v2si __builtin_arm_wrordi (v2si, int)
+v2si __builtin_arm_wunpckihb (v2si, v2si)
+v2si __builtin_arm_wunpckihh (v2si, v2si)
+v2si __builtin_arm_wunpckihw (v2si, v2si)
+v2si __builtin_arm_wunpckilb (v2si, v2si)
+v2si __builtin_arm_wunpckilh (v2si, v2si)
+v2si __builtin_arm_wunpckilw (v2si, v2si)
+v2si __builtin_arm_wunpckehsb (v2si)
+v2si __builtin_arm_wunpckehsh (v2si)
+v2si __builtin_arm_wunpckehsw (v2si)
+v2si __builtin_arm_wunpckehub (v2si)
+v2si __builtin_arm_wunpckehuh (v2si)
+v2si __builtin_arm_wunpckehuw (v2si)
+v2si __builtin_arm_wunpckelsb (v2si)
+v2si __builtin_arm_wunpckelsh (v2si)
+v2si __builtin_arm_wunpckelsw (v2si)
+v2si __builtin_arm_wunpckelub (v2si)
+v2si __builtin_arm_wunpckeluh (v2si)
+v2si __builtin_arm_wunpckeluw (v2si)
+v2si __builtin_arm_wsubwss (v2si, v2si)
+v2si __builtin_arm_wsraw (v2si, v2si)
+v2si __builtin_arm_wsrad (v2si, v2si)
+@end example
+
@node X86 Built-in Functions
@subsection X86 Built-in Functions
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