sol2.c revision 1.1.1.1.8.2
1/* General Solaris system support. 2 Copyright (C) 2004, 2005 , 2007, 2010 Free Software Foundation, Inc. 3 Contributed by CodeSourcery, LLC. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 3, or (at your option) 10any later version. 11 12GCC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING3. If not see 19<http://www.gnu.org/licenses/>. */ 20 21#include "config.h" 22#include "system.h" 23#include "coretypes.h" 24#include "tree.h" 25#include "output.h" 26#include "tm.h" 27#include "rtl.h" 28#include "tm_p.h" 29#include "toplev.h" 30#include "ggc.h" 31 32tree solaris_pending_aligns, solaris_pending_inits, solaris_pending_finis; 33 34/* Attach any pending attributes for DECL to the list in *ATTRIBUTES. 35 Pending attributes come from #pragma or _Pragma, so this code is 36 only useful in the C family front ends, but it is included in 37 all languages to avoid changing the target machine initializer 38 depending on the language. */ 39 40void 41solaris_insert_attributes (tree decl, tree *attributes) 42{ 43 tree *x, next; 44 45 if (solaris_pending_aligns != NULL && TREE_CODE (decl) == VAR_DECL) 46 for (x = &solaris_pending_aligns; *x; x = &TREE_CHAIN (*x)) 47 { 48 tree name = TREE_PURPOSE (*x); 49 tree value = TREE_VALUE (*x); 50 if (DECL_NAME (decl) == name) 51 { 52 if (lookup_attribute ("aligned", DECL_ATTRIBUTES (decl)) 53 || lookup_attribute ("aligned", *attributes)) 54 warning (0, "ignoring %<#pragma align%> for explicitly " 55 "aligned %q+D", decl); 56 else 57 *attributes = tree_cons (get_identifier ("aligned"), value, 58 *attributes); 59 next = TREE_CHAIN (*x); 60 ggc_free (*x); 61 *x = next; 62 break; 63 } 64 } 65 66 if (solaris_pending_inits != NULL && TREE_CODE (decl) == FUNCTION_DECL) 67 for (x = &solaris_pending_inits; *x; x = &TREE_CHAIN (*x)) 68 { 69 tree name = TREE_PURPOSE (*x); 70 if (DECL_NAME (decl) == name) 71 { 72 *attributes = tree_cons (get_identifier ("init"), NULL, 73 *attributes); 74 TREE_USED (decl) = 1; 75 DECL_PRESERVE_P (decl) = 1; 76 next = TREE_CHAIN (*x); 77 ggc_free (*x); 78 *x = next; 79 break; 80 } 81 } 82 83 if (solaris_pending_finis != NULL && TREE_CODE (decl) == FUNCTION_DECL) 84 for (x = &solaris_pending_finis; *x; x = &TREE_CHAIN (*x)) 85 { 86 tree name = TREE_PURPOSE (*x); 87 if (DECL_NAME (decl) == name) 88 { 89 *attributes = tree_cons (get_identifier ("fini"), NULL, 90 *attributes); 91 TREE_USED (decl) = 1; 92 DECL_PRESERVE_P (decl) = 1; 93 next = TREE_CHAIN (*x); 94 ggc_free (*x); 95 *x = next; 96 break; 97 } 98 } 99} 100 101/* Output initializer or finalizer entries for DECL to FILE. */ 102 103void 104solaris_output_init_fini (FILE *file, tree decl) 105{ 106 if (lookup_attribute ("init", DECL_ATTRIBUTES (decl))) 107 { 108 fprintf (file, PUSHSECTION_FORMAT, ".init"); 109 ASM_OUTPUT_CALL (file, decl); 110 fprintf (file, "\t.popsection\n"); 111 } 112 113 if (lookup_attribute ("fini", DECL_ATTRIBUTES (decl))) 114 { 115 fprintf (file, PUSHSECTION_FORMAT, ".fini"); 116 ASM_OUTPUT_CALL (file, decl); 117 fprintf (file, "\t.popsection\n"); 118 } 119} 120 121/* Emit an assembler directive to set symbol for DECL visibility to 122 the visibility type VIS, which must not be VISIBILITY_DEFAULT. */ 123 124void 125solaris_assemble_visibility (tree decl ATTRIBUTE_UNUSED, 126 int vis ATTRIBUTE_UNUSED) 127{ 128#ifdef HAVE_GAS_HIDDEN 129 /* Sun as uses .symbolic for STV_PROTECTED. STV_INTERNAL is marked as 130 `currently reserved', but the linker treats it like STV_HIDDEN. Sun 131 Studio 12.1 cc emits .hidden instead. 132 133 There are 3 Sun extensions GCC doesn't yet know about: STV_EXPORTED, 134 STV_SINGLETON, and STV_ELIMINATE. 135 136 See Linker and Libraries Guide, Ch. 2, Link-Editor, Defining 137 Additional Symbols with a mapfile, 138 http://docs.sun.com/app/docs/doc/819-0690/gdzmc?a=view 139 and Ch. 7, Object-File Format, Symbol Table Section, 140 http://docs.sun.com/app/docs/doc/819-0690/chapter6-79797?a=view */ 141 142 static const char * const visibility_types[] = { 143 NULL, "symbolic", "hidden", "hidden" 144 }; 145 146 const char *name, *type; 147 148 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); 149 type = visibility_types[vis]; 150 151 fprintf (asm_out_file, "\t.%s\t", type); 152 assemble_name (asm_out_file, name); 153 fprintf (asm_out_file, "\n"); 154#else 155 warning (OPT_Wattributes, "visibility attribute not supported " 156 "in this configuration; ignored"); 157#endif 158} 159