1 /* Target definitions for GCC for Intel 80386 running Solaris 2 2 Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 3 2004 4 Free Software Foundation, Inc. 5 Contributed by Fred Fish (fnf@cygnus.com). 6 7 This file is part of GCC. 8 9 GCC is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2, or (at your option) 12 any later version. 13 14 GCC is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GCC; see the file COPYING. If not, write to 21 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 22 Boston, MA 02110-1301, USA. */ 23 24 /* The Solaris 2.0 x86 linker botches alignment of code sections. 25 It tries to align to a 16 byte boundary by padding with 0x00000090 26 ints, rather than 0x90 bytes (nop). This generates trash in the 27 ".init" section since the contribution from crtbegin.o is only 7 28 bytes. The linker pads it to 16 bytes with a single 0x90 byte, and 29 two 0x00000090 ints, which generates a segmentation violation when 30 executed. This macro forces the assembler to do the padding, since 31 it knows what it is doing. */ 32 #define FORCE_CODE_SECTION_ALIGN asm(ALIGN_ASM_OP "16"); 33 34 /* Old versions of the Solaris assembler can not handle the difference of 35 labels in different sections, so force DW_EH_PE_datarel. */ 36 #undef ASM_PREFERRED_EH_DATA_FORMAT 37 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ 38 (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0) \ 39 | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4 \ 40 : DW_EH_PE_datarel)) \ 41 : DW_EH_PE_absptr) 42 43 /* The Solaris linker will not merge a read-only .eh_frame section 44 with a read-write .eh_frame section. None of the encodings used 45 with non-PIC code require runtime relocations. In 64-bit mode, 46 since there is no backwards compatibility issue, we use a read-only 47 section for .eh_frame. In 32-bit mode, we use a writable .eh_frame 48 section in order to be compatible with G++ for Solaris x86. */ 49 #undef EH_TABLES_CAN_BE_READ_ONLY 50 #define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT) 51 52 /* Solaris 2/Intel as chokes on #line directives. */ 53 #undef CPP_SPEC 54 #define CPP_SPEC "%{.S:-P} %(cpp_subtarget)" 55 56 /* FIXME: Removed -K PIC from generic Solaris 2 ASM_SPEC: the native assembler 57 gives many warnings: R_386_32 relocation is used for symbol ".text". */ 58 #undef ASM_SPEC 59 #define ASM_SPEC "\ 60 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \ 61 %(asm_cpu) \ 62 " 63 64 #define ASM_CPU_SPEC "" 65 66 #undef SUBTARGET_EXTRA_SPECS 67 #define SUBTARGET_EXTRA_SPECS \ 68 { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \ 69 { "asm_cpu", ASM_CPU_SPEC }, \ 70 { "startfile_arch", STARTFILE_ARCH_SPEC }, \ 71 { "link_arch", LINK_ARCH_SPEC } 72 73 #undef LOCAL_LABEL_PREFIX 74 #define LOCAL_LABEL_PREFIX "." 75 76 /* The 32-bit Solaris assembler does not support .quad. Do not use it. */ 77 #ifndef TARGET_BI_ARCH 78 #undef ASM_QUAD 79 #endif 80 81 /* The Solaris assembler wants a .local for non-exported aliases. */ 82 #define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \ 83 do { \ 84 const char *declname = \ 85 IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \ 86 ASM_OUTPUT_DEF ((FILE), declname, \ 87 IDENTIFIER_POINTER (TARGET)); \ 88 if (! TREE_PUBLIC (DECL)) \ 89 { \ 90 fprintf ((FILE), "%s", LOCAL_ASM_OP); \ 91 assemble_name ((FILE), declname); \ 92 fprintf ((FILE), "\n"); \ 93 } \ 94 } while (0) 95 96 /* Solaris-specific #pragmas are implemented on top of attributes. Hook in 97 the bits from config/sol2.c. */ 98 #define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes 99 #define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE 100 101 /* Output a simple call for .init/.fini. */ 102 #define ASM_OUTPUT_CALL(FILE, FN) \ 103 do \ 104 { \ 105 fprintf (FILE, "\tcall\t"); \ 106 print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P'); \ 107 fprintf (FILE, "\n"); \ 108 } \ 109 while (0) 110 111 /* We do not need NT_VERSION notes. */ 112 #undef X86_FILE_START_VERSION_DIRECTIVE 113 #define X86_FILE_START_VERSION_DIRECTIVE false 114