diff options
Diffstat (limited to 'gcc/config/rs6000/rs6000-c.c')
| -rw-r--r-- | gcc/config/rs6000/rs6000-c.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/gcc/config/rs6000/rs6000-c.c b/gcc/config/rs6000/rs6000-c.c index 5d36d5d28b3..a231e1756b1 100644 --- a/gcc/config/rs6000/rs6000-c.c +++ b/gcc/config/rs6000/rs6000-c.c @@ -30,6 +30,17 @@ #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 @@ -78,6 +89,138 @@ rs6000_pragma_longcall (cpp_reader *pfile ATTRIBUTE_UNUSED) #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) { @@ -100,6 +243,25 @@ rs6000_cpu_cpp_builtins (cpp_reader *pfile) 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 */ + 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. */ + if (rs6000_altivec_pim) + { + 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__"); |