1 /* Target definitions for GNU compiler for SPARC running System V.4 2 Copyright (C) 1991, 1992, 1995, 1996, 1997, 1998, 2000, 2002, 2007, 2009, 3 2010 4 Free Software Foundation, Inc. 5 Contributed by Ron Guilmette (rfg@monkeys.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 3, 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 COPYING3. If not see 21 <http://www.gnu.org/licenses/>. */ 22 23 #ifndef TARGET_VERSION 24 #define TARGET_VERSION fprintf (stderr, " (sparc ELF)"); 25 #endif 26 27 /* ??? Put back the SIZE_TYPE/PTRDIFF_TYPE definitions set by sparc.h. 28 Why, exactly, is svr4.h messing with this? Seems like the chip 29 would know best. */ 30 31 #undef SIZE_TYPE 32 #define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int") 33 34 #undef PTRDIFF_TYPE 35 #define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int") 36 37 /* Undefined some symbols which are defined in "svr4.h" but which are 38 appropriate only for typical svr4 systems, but not for the specific 39 case of svr4 running on a SPARC. */ 40 41 #undef INIT_SECTION_ASM_OP 42 #undef FINI_SECTION_ASM_OP 43 #undef READONLY_DATA_SECTION_ASM_OP 44 #undef TYPE_OPERAND_FMT 45 #undef STRING_ASM_OP 46 #undef COMMON_ASM_OP 47 #undef SKIP_ASM_OP 48 #undef SET_ASM_OP /* Has no equivalent. See ASM_OUTPUT_DEF below. */ 49 50 /* Pass -K to the assembler when PIC. */ 51 #undef ASM_SPEC 52 #define ASM_SPEC \ 53 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \ 54 %{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu)" 55 56 /* Define the names of various pseudo-op used by the SPARC/svr4 assembler. 57 Note that many of these are different from the typical pseudo-ops used 58 by most svr4 assemblers. That is probably due to a (misguided?) attempt 59 to keep the SPARC/svr4 assembler somewhat compatible with the SPARC/SunOS 60 assembler. */ 61 62 #define STRING_ASM_OP "\t.asciz\t" 63 #define COMMON_ASM_OP "\t.common\t" 64 #define SKIP_ASM_OP "\t.skip\t" 65 66 /* This is the format used to print the second operand of a .type pseudo-op 67 for the SPARC/svr4 assembler. */ 68 69 #define TYPE_OPERAND_FMT "#%s" 70 71 #undef ASM_OUTPUT_CASE_LABEL 72 #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \ 73 do { ASM_OUTPUT_ALIGN ((FILE), Pmode == SImode ? 2 : 3); \ 74 (*targetm.asm_out.internal_label) ((FILE), PREFIX, NUM); \ 75 } while (0) 76 77 /* This is how to equate one symbol to another symbol. The syntax used is 78 `SYM1=SYM2'. Note that this is different from the way equates are done 79 with most svr4 assemblers, where the syntax is `.set SYM1,SYM2'. */ 80 81 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ 82 do { fprintf ((FILE), "\t"); \ 83 assemble_name (FILE, LABEL1); \ 84 fprintf (FILE, " = "); \ 85 assemble_name (FILE, LABEL2); \ 86 fprintf (FILE, "\n"); \ 87 } while (0) 88 89 /* A set of symbol definitions for assembly pseudo-ops which will 90 get us switched to various sections of interest. These are used 91 in all places where we simply want to switch to a section, and 92 *not* to push the previous section name onto the assembler's 93 section names stack (as we do often in dwarfout.c). */ 94 95 #define TEXT_SECTION_ASM_OP "\t.section\t\".text\"" 96 #define DATA_SECTION_ASM_OP "\t.section\t\".data\"" 97 #define BSS_SECTION_ASM_OP "\t.section\t\".bss\"" 98 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t\".rodata\"" 99 #define INIT_SECTION_ASM_OP "\t.section\t\".init\"" 100 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\"" 101 102 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections. 103 104 Note that we want to give these sections the SHF_WRITE attribute 105 because these sections will actually contain data (i.e. tables of 106 addresses of functions in the current root executable or shared library 107 file) and, in the case of a shared library, the relocatable addresses 108 will have to be properly resolved/relocated (and then written into) by 109 the dynamic linker when it actually attaches the given shared library 110 to the executing process. (Note that on SVR4, you may wish to use the 111 `-z text' option to the ELF linker, when building a shared library, as 112 an additional check that you are doing everything right. But if you do 113 use the `-z text' option when building a shared library, you will get 114 errors unless the .ctors and .dtors sections are marked as writable 115 via the SHF_WRITE attribute.) */ 116 117 #undef CTORS_SECTION_ASM_OP 118 #define CTORS_SECTION_ASM_OP "\t.section\t\".ctors\",#alloc,#write" 119 #undef DTORS_SECTION_ASM_OP 120 #define DTORS_SECTION_ASM_OP "\t.section\t\".dtors\",#alloc,#write" 121 122 #undef ASM_OUTPUT_ALIGNED_BSS 123 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 124 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 125 126 /* Override the name of the mcount profiling function. */ 127 128 #undef MCOUNT_FUNCTION 129 #define MCOUNT_FUNCTION "*_mcount" 130