1 /* Override definitions in elfos.h to be correct for IA64. 2 3 Copyright (C) 2000-2021 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 #undef TARGET_INIT_LIBFUNCS 27 #define TARGET_INIT_LIBFUNCS ia64_sysv4_init_libfuncs 28 29 /* We want DWARF2 as specified by the IA64 ABI. */ 30 #undef PREFERRED_DEBUGGING_TYPE 31 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 32 33 /* Stabs does not work properly for 64-bit targets. */ 34 #undef DBX_DEBUGGING_INFO 35 36 /* Various pseudo-ops for which the Intel assembler uses non-standard 37 definitions. */ 38 39 #undef STRING_ASM_OP 40 #define STRING_ASM_OP "\tstringz\t" 41 42 #undef SKIP_ASM_OP 43 #define SKIP_ASM_OP "\t.skip\t" 44 45 #undef COMMON_ASM_OP 46 #define COMMON_ASM_OP "\t.common\t" 47 48 #undef ASCII_DATA_ASM_OP 49 #define ASCII_DATA_ASM_OP "\tstring\t" 50 51 /* ia64-specific options for gas 52 ??? ia64 gas doesn't accept standard svr4 assembler options? */ 53 #undef ASM_SPEC 54 #define ASM_SPEC "-x %{mconstant-gp} %{mauto-pic} %(asm_extra)" 55 56 /* ??? Unfortunately, .lcomm doesn't work, because it puts things in either 57 .bss or .sbss, and we can't control the decision of which is used. When 58 I use .lcomm, I get a cryptic "Section group has no member" error from 59 the Intel simulator. So we must explicitly put variables in .bss 60 instead. This matters only if we care about the Intel assembler. */ 61 62 /* This is asm_output_aligned_bss from varasm.c without the 63 (*targetm.asm_out.globalize_label) call at the beginning. */ 64 65 /* This is for final.c, because it is used by ASM_DECLARE_OBJECT_NAME. */ 66 extern int size_directive_output; 67 68 #undef ASM_OUTPUT_ALIGNED_LOCAL 69 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ 70 do { \ 71 if ((DECL) && sdata_symbolic_operand (XEXP (DECL_RTL (DECL), 0), Pmode)) \ 72 switch_to_section (sbss_section); \ 73 else \ 74 switch_to_section (bss_section); \ 75 ASM_OUTPUT_ALIGN (FILE, floor_log2 ((ALIGN) / BITS_PER_UNIT)); \ 76 ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \ 77 ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1); \ 78 } while (0) 79 80 /* The # tells the Intel assembler that this is not a register name. 81 However, we can't emit the # in a label definition, so we set a variable 82 in ASM_OUTPUT_LABEL to control whether we want the postfix here or not. 83 We append the # to the label name, but since NAME can be an expression 84 we have to scan it for a non-label character and insert the # there. */ 85 86 #undef ASM_OUTPUT_LABELREF 87 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \ 88 do { \ 89 const char *name_ = NAME; \ 90 if (*name_ == '*') \ 91 name_++; \ 92 else \ 93 fputs (user_label_prefix, STREAM); \ 94 fputs (name_, STREAM); \ 95 if (!ia64_asm_output_label) \ 96 fputc ('#', STREAM); \ 97 } while (0) 98 99 /* Intel assembler requires both flags and type if declaring a non-predefined 100 section. */ 101 #undef INIT_SECTION_ASM_OP 102 #define INIT_SECTION_ASM_OP "\t.section\t.init,\"ax\",\"progbits\"" 103 #undef FINI_SECTION_ASM_OP 104 #define FINI_SECTION_ASM_OP "\t.section\t.fini,\"ax\",\"progbits\"" 105 106 #define DBX_REGISTER_NUMBER(REGNO) \ 107 ia64_dbx_register_number(REGNO) 108 109 #undef SIZE_TYPE 110 #define SIZE_TYPE "long unsigned int" 111 112 #undef PTRDIFF_TYPE 113 #define PTRDIFF_TYPE "long int" 114 115 #undef WCHAR_TYPE 116 #define WCHAR_TYPE "int" 117 118 #undef WCHAR_TYPE_SIZE 119 #define WCHAR_TYPE_SIZE 32 120 121 /* We redefine this to use the ia64 .proc pseudo-op. */ 122 123 #undef ASM_DECLARE_FUNCTION_NAME 124 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ 125 ia64_start_function(FILE,NAME,DECL) 126 127 /* We redefine this to use the ia64 .endp pseudo-op. */ 128 129 #undef ASM_DECLARE_FUNCTION_SIZE 130 #define ASM_DECLARE_FUNCTION_SIZE(FILE, NAME, DECL) \ 131 do { \ 132 fputs ("\t.endp ", FILE); \ 133 assemble_name (FILE, NAME); \ 134 fputc ('\n', FILE); \ 135 } while (0) 136 137 /* Override default elf definition. */ 138 #undef TARGET_ASM_RELOC_RW_MASK 139 #define TARGET_ASM_RELOC_RW_MASK ia64_reloc_rw_mask 140 #undef TARGET_ASM_SELECT_RTX_SECTION 141 #define TARGET_ASM_SELECT_RTX_SECTION ia64_select_rtx_section 142 143 #define SDATA_SECTION_ASM_OP "\t.sdata" 144 #define SBSS_SECTION_ASM_OP "\t.sbss" 145