1/* Target definitions for GNU compiler for SPARC running System V.4 2 Copyright (C) 1991, 1992, 1995, 1996, 1997, 1998, 2000, 2002 3 Free Software Foundation, Inc. 4 Contributed by Ron Guilmette (rfg@monkeys.com). 5 6This file is part of GCC. 7 8GCC is free software; you can redistribute it and/or modify 9it under the terms of the GNU General Public License as published by 10the Free Software Foundation; either version 2, or (at your option) 11any later version. 12 13GCC is distributed in the hope that it will be useful, 14but WITHOUT ANY WARRANTY; without even the implied warranty of 15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16GNU General Public License for more details. 17 18You should have received a copy of the GNU General Public License 19along with GCC; see the file COPYING. If not, write to 20the Free Software Foundation, 51 Franklin Street, Fifth Floor, 21Boston, MA 02110-1301, USA. */ 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 PUSHSECTION_FORMAT 46#undef STRING_ASM_OP 47#undef COMMON_ASM_OP 48#undef SKIP_ASM_OP 49#undef SET_ASM_OP /* Has no equivalent. See ASM_OUTPUT_DEF below. */ 50 51/* The native assembler can't compute differences between symbols in different 52 sections when generating pic code, so we must put jump tables in the 53 text section. */ 54/* But we now defer the tables to the end of the function, so we make 55 this 0 to not confuse the branch shortening code. */ 56#define JUMP_TABLES_IN_TEXT_SECTION 0 57 58/* Pass -K to the assembler when PIC. */ 59#undef ASM_SPEC 60#define ASM_SPEC \ 61 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \ 62 %{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu)" 63 64/* Define the names of various pseudo-op used by the SPARC/svr4 assembler. 65 Note that many of these are different from the typical pseudo-ops used 66 by most svr4 assemblers. That is probably due to a (misguided?) attempt 67 to keep the SPARC/svr4 assembler somewhat compatible with the SPARC/SunOS 68 assembler. */ 69 70#define STRING_ASM_OP "\t.asciz\t" 71#define COMMON_ASM_OP "\t.common\t" 72#define SKIP_ASM_OP "\t.skip\t" 73#define PUSHSECTION_ASM_OP "\t.pushsection\t" 74#define POPSECTION_ASM_OP "\t.popsection" 75 76/* This is the format used to print the second operand of a .type pseudo-op 77 for the SPARC/svr4 assembler. */ 78 79#define TYPE_OPERAND_FMT "#%s" 80 81/* This is the format used to print a .pushsection pseudo-op (and its operand) 82 for the SPARC/svr4 assembler. */ 83 84#define PUSHSECTION_FORMAT "%s\"%s\"\n" 85 86#undef ASM_OUTPUT_CASE_LABEL 87#define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \ 88do { ASM_OUTPUT_ALIGN ((FILE), Pmode == SImode ? 2 : 3); \ 89 (*targetm.asm_out.internal_label) ((FILE), PREFIX, NUM); \ 90 } while (0) 91 92/* This is how to equate one symbol to another symbol. The syntax used is 93 `SYM1=SYM2'. Note that this is different from the way equates are done 94 with most svr4 assemblers, where the syntax is `.set SYM1,SYM2'. */ 95 96#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ 97 do { fprintf ((FILE), "\t"); \ 98 assemble_name (FILE, LABEL1); \ 99 fprintf (FILE, " = "); \ 100 assemble_name (FILE, LABEL2); \ 101 fprintf (FILE, "\n"); \ 102 } while (0) 103 104/* Define how the SPARC registers should be numbered for Dwarf output. 105 The numbering provided here should be compatible with the native 106 svr4 SDB debugger in the SPARC/svr4 reference port. The numbering 107 is as follows: 108 109 Assembly name gcc internal regno Dwarf regno 110 ---------------------------------------------------------- 111 g0-g7 0-7 0-7 112 o0-o7 8-15 8-15 113 l0-l7 16-23 16-23 114 i0-i7 24-31 24-31 115 f0-f31 32-63 40-71 116*/ 117 118#define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 32 ? (REGNO) : (REGNO) + 8) 119 120/* A set of symbol definitions for assembly pseudo-ops which will 121 get us switched to various sections of interest. These are used 122 in all places where we simply want to switch to a section, and 123 *not* to push the previous section name onto the assembler's 124 section names stack (as we do often in dwarfout.c). */ 125 126#define TEXT_SECTION_ASM_OP "\t.section\t\".text\"" 127#define DATA_SECTION_ASM_OP "\t.section\t\".data\"" 128#define BSS_SECTION_ASM_OP "\t.section\t\".bss\"" 129#define READONLY_DATA_SECTION_ASM_OP "\t.section\t\".rodata\"" 130#define INIT_SECTION_ASM_OP "\t.section\t\".init\"" 131#define FINI_SECTION_ASM_OP "\t.section\t\".fini\"" 132 133/* Define the pseudo-ops used to switch to the .ctors and .dtors sections. 134 135 Note that we want to give these sections the SHF_WRITE attribute 136 because these sections will actually contain data (i.e. tables of 137 addresses of functions in the current root executable or shared library 138 file) and, in the case of a shared library, the relocatable addresses 139 will have to be properly resolved/relocated (and then written into) by 140 the dynamic linker when it actually attaches the given shared library 141 to the executing process. (Note that on SVR4, you may wish to use the 142 `-z text' option to the ELF linker, when building a shared library, as 143 an additional check that you are doing everything right. But if you do 144 use the `-z text' option when building a shared library, you will get 145 errors unless the .ctors and .dtors sections are marked as writable 146 via the SHF_WRITE attribute.) */ 147 148#undef CTORS_SECTION_ASM_OP 149#define CTORS_SECTION_ASM_OP "\t.section\t\".ctors\",#alloc,#write" 150#undef DTORS_SECTION_ASM_OP 151#define DTORS_SECTION_ASM_OP "\t.section\t\".dtors\",#alloc,#write" 152 153/* Switch into a generic section. */ 154#undef TARGET_ASM_NAMED_SECTION 155#define TARGET_ASM_NAMED_SECTION sparc_elf_asm_named_section 156 157#undef ASM_OUTPUT_ALIGNED_BSS 158#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 159 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 160 161/* Override the name of the mcount profiling function. */ 162 163#undef MCOUNT_FUNCTION 164#define MCOUNT_FUNCTION "*_mcount" 165