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|
/* This file contains the definitions and documentation for the
builtins used in the GNU compiler.
Copyright (C) 2000, 2001 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
/* Before including this file, you should define a macro:
DEF_BUILTIN (ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P,
FALLBACK_P, NONANSI_P)
This macro will be called once for each builtin function. The
ENUM will be of type `enum built_in_function', and will indicate
which builtin function is being processed. The NAME of the builtin
function (which will always start with `__builtin_') is a string
literal. The CLASS is of type `enum built_in_class' and indicates
what kind of builtin is being processed.
Some builtins are actually two separate functions. For example,
for `strcmp' there are two builtin functions; `__builtin_strcmp'
and `strcmp' itself. Both behave identically. Other builtins
define only the `__builtin' variant. If BOTH_P is TRUE, then this
builtin has both variants; otherwise, it is has only the first
variant.
TYPE indicates the type of the function. The symbols correspond to
enumerals from builtin-types.def. If BOTH_P is true, then LIBTYPE
is the type of the non-`__builtin_' variant. Otherwise, LIBTYPE
should be ignored.
If FALLBACK_P is true then, if for some reason, the compiler cannot
expand the builtin function directly, it will call the
corresponding library function (which does not have the
`__builtin_' prefix.
If NONANSI_P is true, then the non-`__builtin_' variant is not an
ANSI/ISO library function, and so we should pretend it does not
exist when compiling in ANSI conformant mode. */
/* A GCC builtin (like __builtin_saveregs) is provided by the
compiler, but does not correspond to a function in the standard
library. */
#undef DEF_GCC_BUILTIN
#define DEF_GCC_BUILTIN(ENUM, NAME, TYPE) \
DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, BT_LAST, \
false, false, false)
/* A fallback builtin is a builtin (like __builtin_puts) that falls
back to the corresopnding library function if necessary -- but
for which we should not introduce the non-`__builtin' variant of
the name. */
#undef DEF_FALLBACK_BUILTIN
#define DEF_FALLBACK_BUILTIN(ENUM, NAME, TYPE) \
DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
false, true, false)
/* Like DEF_FALLBACK_BUILTIN, except that the function is not one that
is specified by ANSI/ISO C. So, when we're being fully conformant
we ignore the version of these builtins that does not begin with
__builtin. */
#undef DEF_EXT_FALLBACK_BUILTIN
#define DEF_EXT_FALLBACK_BUILTIN(ENUM, NAME, TYPE) \
DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
false, true, true)
/* A library builtin (like __builtin_strchr) is a builtin equivalent
of an ANSI/ISO standard library function. In addition to the
`__builtin' version, we will create an ordinary version (e.g,
`strchr') as well. If we cannot compute the answer using the
builtin function, we will fall back to the standard library
version. */
#undef DEF_LIB_BUILTIN
#define DEF_LIB_BUILTIN(ENUM, NAME, TYPE) \
DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
true, true, false)
/* Like DEF_LIB_BUILTIN, except that a call to the builtin should
never fall back to the library version. */
#undef DEF_LIB_ALWAYS_BUILTIN
#define DEF_LIB_ALWAYS_BUILTIN(ENUM, NAME, TYPE) \
DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
true, false, true)
/* Like DEF_LIB_BUILTIN, except that the function is not one that is
specified by ANSI/ISO C. So, when we're being fully conformant we
ignore the version of these builtins that does not begin with
__builtin. */
#undef DEF_EXT_LIB_BUILTIN
#define DEF_EXT_LIB_BUILTIN(ENUM, NAME, TYPE) \
DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
true, true, true)
/* Like DEF_LIB_BUILTIN, except that the function is only a part of
the standard in C99 or above. */
#undef DEF_C99_BUILTIN
#define DEF_C99_BUILTIN(ENUM, NAME, TYPE) \
DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
true, !flag_isoc99, true)
/* Like DEF_LIB_BUILTIN, except that the function is expanded in the
front-end. */
#undef DEF_FRONT_END_LIB_BUILTIN
#define DEF_FRONT_END_LIB_BUILTIN(ENUM, NAME, TYPE) \
DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE, \
true, true, false)
/* Like DEF_FRONT_END_LIB_BUILTIN, except that the function is not one
that is specified by ANSI/ISO C. So, when we're being fully
conformant we ignore the version of these builtins that does not
begin with __builtin. */
#undef DEF_EXT_FRONT_END_LIB_BUILTIN
#define DEF_EXT_FRONT_END_LIB_BUILTIN(ENUM, NAME, TYPE) \
DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE, \
true, true, true)
/* A built-in that is not currently used. */
#undef DEF_UNUSED_BUILTIN
#define DEF_UNUSED_BUILTIN(X) \
DEF_BUILTIN (X, (const char *) NULL, NOT_BUILT_IN, BT_LAST, \
BT_LAST, false, false, false)
/* If SMALL_STACK is defined, then `alloca' is only defined in its
`__builtin' form. */
#if SMALL_STACK
DEF_FALLBACK_BUILTIN(BUILT_IN_ALLOCA,
"__builtin_alloca",
BT_FN_PTR_SIZE)
#else
DEF_EXT_LIB_BUILTIN(BUILT_IN_ALLOCA,
"__builtin_alloca",
BT_FN_PTR_SIZE)
#endif
DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_ABS,
"__builtin_abs",
BT_FN_INT_INT)
DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_LABS,
"__builtin_labs",
BT_FN_LONG_LONG)
DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_FABS,
"__builtin_fabs",
BT_FN_DOUBLE_DOUBLE)
DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_FABSF,
"__builtin_fabsf",
BT_FN_FLOAT_FLOAT)
DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_FABSL,
"__builtin_fabsl",
BT_FN_LONG_DOUBLE_LONG_DOUBLE)
DEF_C99_BUILTIN(BUILT_IN_LLABS,
"__builtin_llabs",
BT_FN_LONGLONG_LONGLONG)
DEF_C99_BUILTIN(BUILT_IN_IMAXABS,
"__builtin_imaxabs",
BT_FN_INTMAX_INTMAX)
DEF_C99_BUILTIN(BUILT_IN_CONJ,
"__builtin_conj",
BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE)
DEF_C99_BUILTIN(BUILT_IN_CONJF,
"__builtin_conjf",
BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT)
DEF_C99_BUILTIN(BUILT_IN_CONJL,
"__builtin_conjl",
BT_FN_COMPLEX_LONG_DOUBLE_COMPLEX_LONG_DOUBLE)
DEF_C99_BUILTIN(BUILT_IN_CREAL,
"__builtin_creal",
BT_FN_DOUBLE_COMPLEX_DOUBLE)
DEF_C99_BUILTIN(BUILT_IN_CREALF,
"__builtin_crealf",
BT_FN_FLOAT_COMPLEX_FLOAT)
DEF_C99_BUILTIN(BUILT_IN_CREALL,
"__builtin_creall",
BT_FN_LONG_DOUBLE_COMPLEX_LONG_DOUBLE)
DEF_C99_BUILTIN(BUILT_IN_CIMAG,
"__builtin_cimag",
BT_FN_DOUBLE_COMPLEX_DOUBLE)
DEF_C99_BUILTIN(BUILT_IN_CIMAGF,
"__builtin_cimagf",
BT_FN_FLOAT_COMPLEX_FLOAT)
DEF_C99_BUILTIN(BUILT_IN_CIMAGL,
"__builtin_cimagl",
BT_FN_LONG_DOUBLE_COMPLEX_LONG_DOUBLE)
DEF_UNUSED_BUILTIN(BUILT_IN_DIV)
DEF_UNUSED_BUILTIN(BUILT_IN_LDIV)
DEF_UNUSED_BUILTIN(BUILT_IN_FFLOOR)
DEF_UNUSED_BUILTIN(BUILT_IN_FCEIL)
DEF_UNUSED_BUILTIN(BUILT_IN_FMOD)
DEF_UNUSED_BUILTIN(BUILT_IN_FREM)
/* The system prototypes for `bzero' and `bcmp' functions have many
variations, so don't specify parameters to avoid conflicts. The
expand_* functions check the argument types anyway. */
DEF_BUILTIN (BUILT_IN_BZERO,
"__builtin_bzero",
BUILT_IN_NORMAL,
BT_FN_VOID_TRAD_PTR_LEN,
BT_FN_VOID_VAR,
true, true, true)
DEF_BUILTIN (BUILT_IN_BCMP,
"__builtin_bcmp",
BUILT_IN_NORMAL,
BT_FN_INT_TRAD_CONST_PTR_TRAD_CONST_PTR_LEN,
BT_FN_INT_VAR,
true, true, true)
DEF_EXT_LIB_BUILTIN(BUILT_IN_FFS,
"__builtin_ffs",
BT_FN_INT_INT)
DEF_EXT_LIB_BUILTIN(BUILT_IN_INDEX,
"__builtin_index",
BT_FN_STRING_CONST_STRING_INT)
DEF_EXT_LIB_BUILTIN(BUILT_IN_RINDEX,
"__builtin_rindex",
BT_FN_STRING_CONST_STRING_INT)
DEF_LIB_BUILTIN(BUILT_IN_MEMCPY,
"__builtin_memcpy",
BT_FN_TRAD_PTR_PTR_CONST_PTR_SIZE)
DEF_LIB_BUILTIN(BUILT_IN_MEMCMP,
"__builtin_memcmp",
BT_FN_INT_CONST_PTR_CONST_PTR_SIZE)
DEF_LIB_BUILTIN(BUILT_IN_MEMSET,
"__builtin_memset",
BT_FN_TRAD_PTR_PTR_INT_SIZE)
DEF_LIB_BUILTIN(BUILT_IN_STRCAT,
"__builtin_strcat",
BT_FN_STRING_STRING_CONST_STRING)
DEF_LIB_BUILTIN(BUILT_IN_STRNCAT,
"__builtin_strncat",
BT_FN_STRING_STRING_CONST_STRING_SIZE)
DEF_LIB_BUILTIN(BUILT_IN_STRCPY,
"__builtin_strcpy",
BT_FN_STRING_STRING_CONST_STRING)
DEF_LIB_BUILTIN(BUILT_IN_STRNCPY,
"__builtin_strncpy",
BT_FN_STRING_STRING_CONST_STRING_SIZE)
DEF_LIB_BUILTIN(BUILT_IN_STRCMP,
"__builtin_strcmp",
BT_FN_INT_CONST_STRING_CONST_STRING)
DEF_LIB_BUILTIN(BUILT_IN_STRNCMP,
"__builtin_strncmp",
BT_FN_INT_CONST_STRING_CONST_STRING_SIZE)
DEF_LIB_BUILTIN(BUILT_IN_STRLEN,
"__builtin_strlen",
BT_FN_LEN_CONST_STRING)
DEF_LIB_BUILTIN(BUILT_IN_STRSTR,
"__builtin_strstr",
BT_FN_STRING_CONST_STRING_CONST_STRING)
DEF_LIB_BUILTIN(BUILT_IN_STRPBRK,
"__builtin_strpbrk",
BT_FN_STRING_CONST_STRING_CONST_STRING)
DEF_LIB_BUILTIN(BUILT_IN_STRSPN,
"__builtin_strspn",
BT_FN_SIZE_CONST_STRING_CONST_STRING)
DEF_LIB_BUILTIN(BUILT_IN_STRCSPN,
"__builtin_strcspn",
BT_FN_SIZE_CONST_STRING_CONST_STRING)
DEF_LIB_BUILTIN(BUILT_IN_STRCHR,
"__builtin_strchr",
BT_FN_STRING_CONST_STRING_INT)
DEF_LIB_BUILTIN(BUILT_IN_STRRCHR,
"__builtin_strrchr",
BT_FN_STRING_CONST_STRING_INT)
DEF_LIB_BUILTIN(BUILT_IN_SQRT,
"__builtin_sqrt",
BT_FN_DOUBLE_DOUBLE)
DEF_LIB_BUILTIN(BUILT_IN_SIN,
"__builtin_sin",
BT_FN_DOUBLE_DOUBLE)
DEF_LIB_BUILTIN(BUILT_IN_COS,
"__builtin_cos",
BT_FN_DOUBLE_DOUBLE)
DEF_LIB_BUILTIN(BUILT_IN_SQRTF,
"__builtin_sqrtf",
BT_FN_FLOAT_FLOAT)
DEF_LIB_BUILTIN(BUILT_IN_SINF,
"__builtin_sinf",
BT_FN_FLOAT_FLOAT)
DEF_LIB_BUILTIN(BUILT_IN_COSF,
"__builtin_cosf",
BT_FN_FLOAT_FLOAT)
DEF_LIB_BUILTIN(BUILT_IN_SQRTL,
"__builtin_sqrtl",
BT_FN_LONG_DOUBLE_LONG_DOUBLE)
DEF_LIB_BUILTIN(BUILT_IN_SINL,
"__builtin_sinl",
BT_FN_LONG_DOUBLE_LONG_DOUBLE)
DEF_LIB_BUILTIN(BUILT_IN_COSL,
"__builtin_cosl",
BT_FN_LONG_DOUBLE_LONG_DOUBLE)
DEF_UNUSED_BUILTIN(BUILT_IN_GETEXP)
DEF_UNUSED_BUILTIN(BUILT_IN_GETMAN)
DEF_GCC_BUILTIN(BUILT_IN_SAVEREGS,
"__builtin_saveregs",
BT_FN_PTR_VAR)
DEF_GCC_BUILTIN(BUILT_IN_CLASSIFY_TYPE,
"__builtin_classify_type",
BT_FN_INT_VAR)
DEF_GCC_BUILTIN(BUILT_IN_NEXT_ARG,
"__builtin_next_arg",
BT_FN_PTR_VAR)
DEF_GCC_BUILTIN(BUILT_IN_ARGS_INFO,
"__builtin_args_info",
BT_FN_INT_INT)
DEF_GCC_BUILTIN(BUILT_IN_CONSTANT_P,
"__builtin_constant_p",
BT_FN_INT_VAR)
DEF_GCC_BUILTIN(BUILT_IN_FRAME_ADDRESS,
"__builtin_frame_address",
BT_FN_PTR_UNSIGNED)
DEF_GCC_BUILTIN(BUILT_IN_RETURN_ADDRESS,
"__builtin_return_address",
BT_FN_PTR_UNSIGNED)
DEF_GCC_BUILTIN(BUILT_IN_AGGREGATE_INCOMING_ADDRESS,
"__builtin_aggregate_incoming_address",
BT_FN_PTR_VAR)
DEF_GCC_BUILTIN(BUILT_IN_APPLY_ARGS,
"__builtin_apply_args",
BT_FN_PTR_VAR)
DEF_GCC_BUILTIN(BUILT_IN_APPLY,
"__builtin_apply",
BT_FN_PTR_PTR_FN_VOID_VAR_PTR_SIZE)
DEF_GCC_BUILTIN(BUILT_IN_RETURN,
"__builtin_return",
BT_FN_VOID_PTR)
DEF_GCC_BUILTIN(BUILT_IN_SETJMP,
"__builtin_setjmp",
BT_FN_INT_PTR)
DEF_GCC_BUILTIN(BUILT_IN_LONGJMP,
"__builtin_longjmp",
BT_FN_VOID_PTR_INT)
DEF_GCC_BUILTIN(BUILT_IN_TRAP,
"__builtin_trap",
BT_FN_VOID)
DEF_GCC_BUILTIN(BUILT_IN_PREFETCH,
"__builtin_prefetch",
BT_FN_VOID_PTR_VAR)
/* Stdio builtins. */
DEF_FALLBACK_BUILTIN(BUILT_IN_PUTCHAR,
"__builtin_putchar",
BT_FN_INT_INT)
DEF_FALLBACK_BUILTIN(BUILT_IN_PUTS,
"__builtin_puts",
BT_FN_INT_CONST_STRING)
DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF,
"__builtin_printf",
BT_FN_INT_CONST_STRING_VAR)
DEF_FALLBACK_BUILTIN(BUILT_IN_FPUTC,
"__builtin_fputc",
BT_FN_INT_INT_PTR)
/* Declare the __builtin_ style with arguments and the regular style
without them. We rely on stdio.h to supply the arguments for the
regular style declaration since we had to use void* instead of
FILE* in the __builtin_ prototype supplied here. */
DEF_BUILTIN (BUILT_IN_FPUTS,
"__builtin_fputs",
BUILT_IN_NORMAL,
BT_FN_INT_CONST_STRING_PTR,
BT_FN_INT_VAR,
true, true, false)
DEF_FALLBACK_BUILTIN(BUILT_IN_FWRITE,
"__builtin_fwrite",
BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR)
DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF,
"__builtin_fprintf",
BT_FN_INT_PTR_CONST_STRING_VAR)
/* Stdio unlocked builtins. */
DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTCHAR_UNLOCKED,
"__builtin_putchar_unlocked",
BT_FN_INT_INT)
DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTS_UNLOCKED,
"__builtin_puts_unlocked",
BT_FN_INT_CONST_STRING)
DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF_UNLOCKED,
"__builtin_printf_unlocked",
BT_FN_INT_CONST_STRING_VAR)
DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FPUTC_UNLOCKED,
"__builtin_fputc_unlocked",
BT_FN_INT_INT_PTR)
/* Declare the __builtin_ style with arguments and the regular style
without them. We rely on stdio.h to supply the arguments for the
regular style declaration since we had to use void* instead of
FILE* in the __builtin_ prototype supplied here. */
DEF_BUILTIN (BUILT_IN_FPUTS_UNLOCKED,
"__builtin_fputs_unlocked",
BUILT_IN_NORMAL,
BT_FN_INT_CONST_STRING_PTR,
BT_FN_INT_VAR,
true, true, true)
DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FWRITE_UNLOCKED,
"__builtin_fwrite_unlocked",
BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR)
DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF_UNLOCKED,
"__builtin_fprintf_unlocked",
BT_FN_INT_PTR_CONST_STRING_VAR)
/* ISO C99 floating point unordered comparisons. */
DEF_GCC_BUILTIN(BUILT_IN_ISGREATER,
"__builtin_isgreater",
BT_FN_INT_VAR)
DEF_GCC_BUILTIN(BUILT_IN_ISGREATEREQUAL,
"__builtin_isgreaterequal",
BT_FN_INT_VAR)
DEF_GCC_BUILTIN(BUILT_IN_ISLESS,
"__builtin_isless",
BT_FN_INT_VAR)
DEF_GCC_BUILTIN(BUILT_IN_ISLESSEQUAL,
"__builtin_islessequal",
BT_FN_INT_VAR)
DEF_GCC_BUILTIN(BUILT_IN_ISLESSGREATER,
"__builtin_islessgreater",
BT_FN_INT_VAR)
DEF_GCC_BUILTIN(BUILT_IN_ISUNORDERED,
"__builtin_isunordered",
BT_FN_INT_VAR)
/* Various hooks for the DWARF 2 __throw routine. */
DEF_GCC_BUILTIN(BUILT_IN_UNWIND_INIT,
"__builtin_unwind_init",
BT_FN_VOID)
DEF_GCC_BUILTIN(BUILT_IN_DWARF_CFA,
"__builtin_dwarf_cfa",
BT_FN_PTR)
DEF_GCC_BUILTIN(BUILT_IN_DWARF_FP_REGNUM,
"__builtin_dwarf_fp_regnum",
BT_FN_UNSIGNED)
DEF_GCC_BUILTIN(BUILT_IN_INIT_DWARF_REG_SIZES,
"__builtin_init_dwarf_reg_size_table",
BT_FN_VOID_PTR)
DEF_GCC_BUILTIN(BUILT_IN_FROB_RETURN_ADDR,
"__builtin_frob_return_addr",
BT_FN_PTR_PTR)
DEF_GCC_BUILTIN(BUILT_IN_EXTRACT_RETURN_ADDR,
"__builtin_extract_return_addr",
BT_FN_PTR_PTR)
DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN,
"__builtin_eh_return",
BT_FN_VOID_PTRMODE_PTR)
DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN_DATA_REGNO,
"__builtin_eh_return_data_regno",
BT_FN_INT_INT)
DEF_GCC_BUILTIN(BUILT_IN_VARARGS_START,
"__builtin_varargs_start",
BT_FN_VOID_VALIST_REF)
DEF_GCC_BUILTIN(BUILT_IN_STDARG_START,
"__builtin_stdarg_start",
BT_FN_VOID_VALIST_REF_VAR)
DEF_GCC_BUILTIN(BUILT_IN_VA_END,
"__builtin_va_end",
BT_FN_VOID_VALIST_REF)
DEF_GCC_BUILTIN(BUILT_IN_VA_COPY,
"__builtin_va_copy",
BT_FN_VOID_VALIST_REF_VALIST_ARG)
DEF_GCC_BUILTIN(BUILT_IN_EXPECT,
"__builtin_expect",
BT_FN_LONG_LONG_LONG)
/* C++ extensions */
DEF_UNUSED_BUILTIN(BUILT_IN_NEW)
DEF_UNUSED_BUILTIN(BUILT_IN_VEC_NEW)
DEF_UNUSED_BUILTIN(BUILT_IN_DELETE)
DEF_UNUSED_BUILTIN(BUILT_IN_VEC_DELETE)
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