1/* Definitions of target machine for GNU compiler, for SPARC64, ELF. 2 Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc. 3 Contributed by Doug Evans, dje@cygnus.com. 4 5This file is part of GNU CC. 6 7GNU CC 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 2, or (at your option) 10any later version. 11 12GNU CC 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 GNU CC; see the file COPYING. If not, write to 19the Free Software Foundation, 59 Temple Place - Suite 330, 20Boston, MA 02111-1307, USA. */ 21 22/* ??? We're taking the scheme of including another file and then overriding 23 the values we don't like a bit too far here. The alternative is to more or 24 less duplicate all of svr4.h, sparc/sysv4.h, and sparc/sol2.h here 25 (suitably cleaned up). */ 26 27#include "sparc/sol2.h" 28 29#undef TARGET_VERSION 30#define TARGET_VERSION fprintf (stderr, " (sparc64-elf)") 31 32/* A 64 bit v9 compiler in a Medium/Anywhere code model environment. */ 33 34#undef TARGET_DEFAULT 35#define TARGET_DEFAULT \ 36(MASK_V9 + MASK_PTR64 + MASK_64BIT + MASK_HARD_QUAD \ 37 + MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU + MASK_STACK_BIAS) 38 39#undef SPARC_DEFAULT_CMODEL 40#define SPARC_DEFAULT_CMODEL CM_EMBMEDANY 41 42#undef CPP_PREDEFINES 43#define CPP_PREDEFINES "-Dsparc -D__ELF__ -Acpu(sparc) -Amachine(sparc)" 44 45/* __svr4__ is used by the C library (FIXME) */ 46#undef CPP_SUBTARGET_SPEC 47#define CPP_SUBTARGET_SPEC "-D__svr4__" 48 49#undef MD_EXEC_PREFIX 50#undef MD_STARTFILE_PREFIX 51 52#undef ASM_SPEC 53#define ASM_SPEC "\ 54%{v:-V} -s %{fpic:-K PIC} %{fPIC:-K PIC} \ 55%{mlittle-endian:-EL} \ 56%(asm_cpu) %(asm_arch) \ 57" 58 59/* This is taken from sol2.h. */ 60#undef LINK_SPEC 61#define LINK_SPEC "\ 62%{v:-V} \ 63%{mlittle-endian:-EL} \ 64" 65 66/* We need something a little simpler for the embedded environment. 67 Profiling doesn't really work yet so we just copy the default. */ 68#undef STARTFILE_SPEC 69#define STARTFILE_SPEC "\ 70%{!shared:%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}} \ 71crtbegin.o%s \ 72" 73 74#undef ENDFILE_SPEC 75#define ENDFILE_SPEC "crtend.o%s" 76 77/* Use the default (for now). */ 78#undef LIB_SPEC 79 80/* V9 chips can handle either endianness. */ 81#undef SUBTARGET_SWITCHES 82#define SUBTARGET_SWITCHES \ 83{"big-endian", -MASK_LITTLE_ENDIAN, "Generate code for big endian" }, \ 84{"little-endian", MASK_LITTLE_ENDIAN, "Generate code for little endian" }, 85 86#undef BYTES_BIG_ENDIAN 87#define BYTES_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN) 88 89#undef WORDS_BIG_ENDIAN 90#define WORDS_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN) 91 92/* ??? This should be 32 bits for v9 but what can we do? */ 93#undef WCHAR_TYPE 94#define WCHAR_TYPE "short unsigned int" 95 96#undef WCHAR_TYPE_SIZE 97#define WCHAR_TYPE_SIZE 16 98 99#undef LONG_DOUBLE_TYPE_SIZE 100#define LONG_DOUBLE_TYPE_SIZE 128 101 102/* The medium/anywhere code model practically requires us to put jump tables 103 in the text section as gcc is unable to distinguish LABEL_REF's of jump 104 tables from other label refs (when we need to). */ 105/* But we now defer the tables to the end of the function, so we make 106 this 0 to not confuse the branch shortening code. */ 107#undef JUMP_TABLES_IN_TEXT_SECTION 108#define JUMP_TABLES_IN_TEXT_SECTION 0 109 110/* System V Release 4 uses DWARF debugging info. 111 GDB doesn't support 64 bit stabs yet and the desired debug format is DWARF 112 anyway so it is the default. */ 113 114#define DWARF_DEBUGGING_INFO 115#define DWARF2_DEBUGGING_INFO 116#define DBX_DEBUGGING_INFO 117 118#undef PREFERRED_DEBUGGING_TYPE 119#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 120 121/* Stabs doesn't use this, and it confuses a simulator. */ 122/* ??? Need to see what DWARF needs, if anything. */ 123#undef ASM_IDENTIFY_GCC 124#define ASM_IDENTIFY_GCC(FILE) 125 126/* Define the names of various pseudo-ops used by the Sparc/svr4 assembler. 127 ??? If ints are 64 bits then UNALIGNED_INT_ASM_OP (defined elsewhere) is 128 misnamed. These should all refer to explicit sizes (half/word/xword?), 129 anything other than short/int/long/etc. */ 130 131#define UNALIGNED_LONGLONG_ASM_OP ".uaxword" 132 133/* DWARF stuff. */ 134 135#define ASM_OUTPUT_DWARF_ADDR(FILE, LABEL) \ 136do { \ 137 fprintf ((FILE), "\t%s\t", UNALIGNED_LONGLONG_ASM_OP); \ 138 assemble_name ((FILE), (LABEL)); \ 139 fprintf ((FILE), "\n"); \ 140} while (0) 141 142#define ASM_OUTPUT_DWARF_ADDR_CONST(FILE, RTX) \ 143do { \ 144 fprintf ((FILE), "\t%s\t", UNALIGNED_LONGLONG_ASM_OP); \ 145 output_addr_const ((FILE), (RTX)); \ 146 fputc ('\n', (FILE)); \ 147} while (0) 148 149#define ASM_OUTPUT_DWARF2_ADDR_CONST(FILE, ADDR) \ 150 fprintf ((FILE), "\t%s\t%s", UNALIGNED_LONGLONG_ASM_OP, (ADDR)) 151 152/* ??? Not sure if this should be 4 or 8 bytes. 4 works for now. */ 153#define ASM_OUTPUT_DWARF_REF(FILE, LABEL) \ 154do { \ 155 fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ 156 assemble_name ((FILE), (LABEL)); \ 157 fprintf ((FILE), "\n"); \ 158} while (0) 159