1 /* Definitions for ELF assembler support. 2 Copyright (C) 1999, 2003 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GCC is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING. If not, write to 18 the Free Software Foundation, 59 Temple Place - Suite 330, 19 Boston, MA 02111-1307, USA. */ 20 21 /* So we can conditionalize small amounts of code in pa.c or pa.md. */ 22 #define OBJ_ELF 23 24 #define ENDFILE_SPEC "crtend.o%s" 25 26 #define STARTFILE_SPEC "%{!shared: \ 27 %{!symbolic: \ 28 %{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\ 29 crtbegin.o%s" 30 31 #define TEXT_SECTION_ASM_OP "\t.text" 32 #define DATA_SECTION_ASM_OP "\t.data" 33 #define BSS_SECTION_ASM_OP "\t.section\t.bss" 34 35 #define TARGET_ASM_FILE_START pa_elf_file_start 36 37 #undef ASM_DECLARE_FUNCTION_NAME 38 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ 39 do { \ 40 if (TREE_PUBLIC (DECL)) \ 41 { \ 42 fputs ("\t.EXPORT ", FILE); \ 43 assemble_name (FILE, NAME); \ 44 fputs (",ENTRY\n", FILE); \ 45 } \ 46 } while (0) 47 48 /* This is how to output a command to make the user-level label named NAME 49 defined for reference from other files. 50 51 We call assemble_name, which in turn sets TREE_SYMBOL_REFERENCED. This 52 macro will restore the original value of TREE_SYMBOL_REFERENCED to avoid 53 placing useless function definitions in the output file. 54 55 Also note that the SOM based tools need the symbol imported as a CODE 56 symbol, while the ELF based tools require the symbol to be imported as 57 an ENTRY symbol. What a crock. */ 58 59 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \ 60 do { int save_referenced; \ 61 save_referenced = TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (DECL)); \ 62 fputs ("\t.IMPORT ", FILE); \ 63 assemble_name (FILE, NAME); \ 64 if (FUNCTION_NAME_P (NAME)) \ 65 fputs (",ENTRY\n", FILE); \ 66 else \ 67 fputs (",DATA\n", FILE); \ 68 TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (DECL)) = save_referenced; \ 69 } while (0) 70 71 /* The bogus HP assembler requires ALL external references to be 72 "imported", even library calls. They look a bit different, so 73 here's this macro. 74 75 Also note not all libcall names are passed to 76 targetm.encode_section_info (__main for example). To make sure all 77 libcall names have section info recorded in them, we do it here. */ 78 79 #undef ASM_OUTPUT_EXTERNAL_LIBCALL 80 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, RTL) \ 81 do { fputs ("\t.IMPORT ", FILE); \ 82 if (!function_label_operand (RTL, VOIDmode)) \ 83 hppa_encode_label (RTL); \ 84 assemble_name (FILE, XSTR ((RTL), 0)); \ 85 fputs (",ENTRY\n", FILE); \ 86 } while (0) 87 88 /* Biggest alignment supported by the object file format of this 89 machine. Use this macro to limit the alignment which can be 90 specified using the `__attribute__ ((aligned (N)))' construct. If 91 not defined, the default value is `BIGGEST_ALIGNMENT'. */ 92 #define MAX_OFILE_ALIGNMENT (32768 * 8) 93