| /* Subroutines for the C front end on the POWER and PowerPC architectures. |
| Copyright (C) 2002, 2003, 2004 |
| Free Software Foundation, Inc. |
| |
| Contributed by Zack Weinberg <zack@codesourcery.com> |
| |
| 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. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| #include "cpplib.h" |
| #include "tree.h" |
| #include "c-pragma.h" |
| #include "errors.h" |
| #include "tm_p.h" |
| /* APPLE LOCAL begin AltiVec */ |
| #include "c-common.h" |
| #include "cpplib.h" |
| #include "../libcpp/internal.h" |
| #include "target.h" |
| #include "options.h" |
| |
| static cpp_hashnode *altivec_categorize_keyword (const cpp_token *); |
| static void init_vector_keywords (cpp_reader *pfile); |
| /* APPLE LOCAL end AltiVec */ |
| |
| |
| /* Handle the machine specific pragma longcall. Its syntax is |
| |
| # pragma longcall ( TOGGLE ) |
| |
| where TOGGLE is either 0 or 1. |
| |
| rs6000_default_long_calls is set to the value of TOGGLE, changing |
| whether or not new function declarations receive a longcall |
| attribute by default. */ |
| |
| #define SYNTAX_ERROR(gmsgid) do { \ |
| warning (gmsgid); \ |
| warning ("ignoring malformed #pragma longcall"); \ |
| return; \ |
| } while (0) |
| |
| void |
| rs6000_pragma_longcall (cpp_reader *pfile ATTRIBUTE_UNUSED) |
| { |
| tree x, n; |
| |
| /* If we get here, generic code has already scanned the directive |
| leader and the word "longcall". */ |
| |
| if (c_lex (&x) != CPP_OPEN_PAREN) |
| SYNTAX_ERROR ("missing open paren"); |
| if (c_lex (&n) != CPP_NUMBER) |
| SYNTAX_ERROR ("missing number"); |
| if (c_lex (&x) != CPP_CLOSE_PAREN) |
| SYNTAX_ERROR ("missing close paren"); |
| |
| if (n != integer_zero_node && n != integer_one_node) |
| SYNTAX_ERROR ("number must be 0 or 1"); |
| |
| if (c_lex (&x) != CPP_EOF) |
| warning ("junk at end of #pragma longcall"); |
| |
| rs6000_default_long_calls = (n == integer_one_node); |
| } |
| |
| /* Handle defining many CPP flags based on TARGET_xxx. As a general |
| policy, rather than trying to guess what flags a user might want a |
| #define for, it's better to define a flag for everything. */ |
| |
| #define builtin_define(TXT) cpp_define (pfile, TXT) |
| #define builtin_assert(TXT) cpp_assert (pfile, TXT) |
| |
| /* APPLE LOCAL begin AltiVec */ |
| /* Keep the AltiVec keywords handy for fast comparisons. */ |
| static GTY(()) cpp_hashnode *__vector_keyword; |
| static GTY(()) cpp_hashnode *vector_keyword; |
| static GTY(()) cpp_hashnode *__pixel_keyword; |
| static GTY(()) cpp_hashnode *pixel_keyword; |
| static GTY(()) cpp_hashnode *__bool_keyword; |
| static GTY(()) cpp_hashnode *bool_keyword; |
| static GTY(()) cpp_hashnode *_Bool_keyword; |
| |
| static GTY(()) cpp_hashnode *expand_bool_pixel; /* Preserved across calls. */ |
| |
| static cpp_hashnode * |
| altivec_categorize_keyword (const cpp_token *tok) |
| { |
| if (tok->type == CPP_NAME) |
| { |
| cpp_hashnode *ident = tok->val.node; |
| |
| if (ident == vector_keyword || ident == __vector_keyword) |
| return __vector_keyword; |
| |
| if (ident == pixel_keyword || ident == __pixel_keyword) |
| return __pixel_keyword; |
| |
| if (ident == bool_keyword || ident == _Bool_keyword |
| || ident == __bool_keyword) |
| return __bool_keyword; |
| |
| return ident; |
| } |
| |
| return 0; |
| } |
| |
| /* Called to decide whether a conditional macro should be expanded. |
| Since we have exactly one such macro (i.e, 'vector'), we do not |
| need to examine the 'tok' parameter. */ |
| |
| cpp_hashnode * |
| rs6000_macro_to_expand (cpp_reader *pfile, const cpp_token *tok) |
| { |
| static bool vector_keywords_init = false; |
| cpp_hashnode *expand_this = tok->val.node; |
| cpp_hashnode *ident; |
| |
| if (!vector_keywords_init) |
| { |
| init_vector_keywords (pfile); |
| vector_keywords_init = true; |
| } |
| |
| ident = altivec_categorize_keyword (tok); |
| |
| if (ident == __vector_keyword) |
| { |
| tok = _cpp_peek_token (pfile, 0); |
| ident = altivec_categorize_keyword (tok); |
| |
| if (ident == __pixel_keyword || ident == __bool_keyword) |
| { |
| expand_this = __vector_keyword; |
| expand_bool_pixel = ident; |
| } |
| else if (ident) |
| { |
| enum rid rid_code = (enum rid)(ident->rid_code); |
| if (ident->type == NT_MACRO) |
| { |
| (void)cpp_get_token (pfile); |
| tok = _cpp_peek_token (pfile, 0); |
| ident = altivec_categorize_keyword (tok); |
| rid_code = (enum rid)(ident->rid_code); |
| } |
| |
| if (rid_code == RID_UNSIGNED || rid_code == RID_LONG |
| || rid_code == RID_SHORT || rid_code == RID_SIGNED |
| || rid_code == RID_INT || rid_code == RID_CHAR |
| || rid_code == RID_FLOAT) |
| { |
| expand_this = __vector_keyword; |
| /* If the next keyword is bool or pixel, it |
| will need to be expanded as well. */ |
| tok = _cpp_peek_token (pfile, 1); |
| ident = altivec_categorize_keyword (tok); |
| |
| if (ident == __pixel_keyword || ident == __bool_keyword) |
| expand_bool_pixel = ident; |
| } |
| } |
| } |
| else if (expand_bool_pixel |
| && (ident == __pixel_keyword || ident == __bool_keyword)) |
| { |
| expand_this = expand_bool_pixel; |
| expand_bool_pixel = 0; |
| } |
| |
| return expand_this; |
| } |
| |
| static void |
| init_vector_keywords (cpp_reader *pfile) |
| { |
| /* Keywords without two leading underscores are context-sensitive, and hence |
| implemented as conditional macros, controlled by the rs6000_macro_to_expand() |
| function above. */ |
| __vector_keyword = cpp_lookup (pfile, DSC ("__vector")); |
| __vector_keyword->flags |= NODE_CONDITIONAL; |
| |
| __pixel_keyword = cpp_lookup (pfile, DSC ("__pixel")); |
| __pixel_keyword->flags |= NODE_CONDITIONAL; |
| |
| __bool_keyword = cpp_lookup (pfile, DSC ("__bool")); |
| __bool_keyword->flags |= NODE_CONDITIONAL; |
| |
| vector_keyword = cpp_lookup (pfile, DSC ("vector")); |
| vector_keyword->flags |= NODE_CONDITIONAL; |
| |
| pixel_keyword = cpp_lookup (pfile, DSC ("pixel")); |
| pixel_keyword->flags |= NODE_CONDITIONAL; |
| |
| _Bool_keyword = cpp_lookup (pfile, DSC ("_Bool")); |
| _Bool_keyword->flags |= NODE_CONDITIONAL; |
| |
| bool_keyword = cpp_lookup (pfile, DSC ("bool")); |
| bool_keyword->flags |= NODE_CONDITIONAL; |
| return; |
| } |
| |
| /* APPLE LOCAL end AltiVec */ |
| |
| void |
| rs6000_cpu_cpp_builtins (cpp_reader *pfile) |
| { |
| if (TARGET_POWER2) |
| builtin_define ("_ARCH_PWR2"); |
| else if (TARGET_POWER) |
| builtin_define ("_ARCH_PWR"); |
| if (TARGET_POWERPC) |
| builtin_define ("_ARCH_PPC"); |
| if (TARGET_POWERPC64) |
| builtin_define ("_ARCH_PPC64"); |
| if (! TARGET_POWER && ! TARGET_POWER2 && ! TARGET_POWERPC) |
| builtin_define ("_ARCH_COM"); |
| if (TARGET_ALTIVEC) |
| { |
| builtin_define ("__ALTIVEC__"); |
| builtin_define ("__VEC__=10206"); |
| |
| /* Define the AltiVec syntactic elements. */ |
| builtin_define ("__vector=__attribute__((altivec(vector__)))"); |
| builtin_define ("__pixel=__attribute__((altivec(pixel__))) unsigned short"); |
| builtin_define ("__bool=__attribute__((altivec(bool__))) unsigned"); |
| |
| /* APPLE LOCAL begin AltiVec */ |
| if (rs6000_altivec_pim) |
| { |
| builtin_define ("vector=vector"); |
| builtin_define ("pixel=pixel"); |
| builtin_define ("_Bool=_Bool"); |
| builtin_define ("bool=bool"); |
| init_vector_keywords (pfile); |
| |
| /* Indicate that the compiler supports Apple AltiVec syntax, |
| including context-sensitive keywords. */ |
| builtin_define ("__APPLE_ALTIVEC__"); |
| builtin_define ("vec_step(T)=(sizeof (__typeof__(T)) / sizeof (__typeof__(T) __attribute__((altivec(element__)))))"); |
| |
| /* Enable context-sensitive macros. */ |
| cpp_get_callbacks (pfile)->macro_to_expand = rs6000_macro_to_expand; |
| } |
| /* APPLE LOCAL end AltiVec */ |
| } |
| if (TARGET_SPE) |
| builtin_define ("__SPE__"); |
| if (TARGET_SOFT_FLOAT) |
| builtin_define ("_SOFT_FLOAT"); |
| /* Used by lwarx/stwcx. errata work-around. */ |
| if (rs6000_cpu == PROCESSOR_PPC405) |
| builtin_define ("__PPC405__"); |
| |
| /* May be overridden by target configuration. */ |
| RS6000_CPU_CPP_ENDIAN_BUILTINS(); |
| |
| if (TARGET_LONG_DOUBLE_128) |
| builtin_define ("__LONG_DOUBLE_128__"); |
| |
| switch (rs6000_current_abi) |
| { |
| case ABI_V4: |
| builtin_define ("_CALL_SYSV"); |
| break; |
| case ABI_AIX: |
| builtin_define ("_CALL_AIXDESC"); |
| builtin_define ("_CALL_AIX"); |
| break; |
| case ABI_DARWIN: |
| builtin_define ("_CALL_DARWIN"); |
| break; |
| default: |
| break; |
| } |
| } |