1/* Definitions for Intel 386 running system V, using gas. 2 Copyright (C) 1992, 1996, 2000, 2002 Free Software Foundation, Inc. 3 4This file is part of GNU CC. 5 6GNU CC is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 2, or (at your option) 9any later version. 10 11GNU CC is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GNU CC; see the file COPYING. If not, write to 18the Free Software Foundation, 59 Temple Place - Suite 330, 19Boston, MA 02111-1307, USA. */ 20 21#define TARGET_VERSION fprintf (stderr, " (80386, ATT syntax)"); 22 23/* Add stuff that normally comes from i386/sysv3.h */ 24 25/* longjmp may fail to restore the registers if called from the same 26 function that called setjmp. To compensate, the compiler avoids 27 putting variables in registers in functions that use both setjmp 28 and longjmp. */ 29 30#define NON_SAVING_SETJMP \ 31 (current_function_calls_setjmp && current_function_calls_longjmp) 32 33/* longjmp may fail to restore the stack pointer if the saved frame 34 pointer is the same as the caller's frame pointer. Requiring a frame 35 pointer in any function that calls setjmp or longjmp avoids this 36 problem, unless setjmp and longjmp are called from the same function. 37 Since a frame pointer will be required in such a function, it is OK 38 that the stack pointer is not restored. */ 39 40#undef SUBTARGET_FRAME_POINTER_REQUIRED 41#define SUBTARGET_FRAME_POINTER_REQUIRED \ 42 (current_function_calls_setjmp || current_function_calls_longjmp) 43 44/* Modify ASM_OUTPUT_LOCAL slightly to test -msvr3-shlib, adapted to gas */ 45#undef ASM_OUTPUT_LOCAL 46#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ 47 do { \ 48 int align = exact_log2 (ROUNDED); \ 49 if (align > 2) align = 2; \ 50 if (TARGET_SVR3_SHLIB) \ 51 { \ 52 data_section (); \ 53 ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \ 54 ASM_OUTPUT_LABEL ((FILE), (NAME)); \ 55 fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED)); \ 56 } \ 57 else \ 58 { \ 59 fputs (".lcomm ", (FILE)); \ 60 assemble_name ((FILE), (NAME)); \ 61 fprintf ((FILE), ",%u\n", (ROUNDED)); \ 62 } \ 63 } while (0) 64 65/* Add stuff that normally comes from i386/sysv3.h via svr3.h */ 66 67/* Define the actual types of some ANSI-mandated types. These 68 definitions should work for most SVR3 systems. */ 69 70#undef SIZE_TYPE 71#define SIZE_TYPE "unsigned int" 72 73#undef PTRDIFF_TYPE 74#define PTRDIFF_TYPE "int" 75 76#undef WCHAR_TYPE 77#define WCHAR_TYPE "long int" 78 79#undef WCHAR_TYPE_SIZE 80#define WCHAR_TYPE_SIZE BITS_PER_WORD 81 82/* ??? This stuff is copied from config/svr3.h. In the future, 83 this file should be rewritten to include config/svr3.h 84 and override what isn't right. */ 85 86#define INIT_SECTION_ASM_OP "\t.section\t.init" 87#define FINI_SECTION_ASM_OP "\t.section .fini,\"x\"" 88#define CTORS_SECTION_ASM_OP INIT_SECTION_ASM_OP 89#define DTORS_SECTION_ASM_OP FINI_SECTION_ASM_OP 90 91/* CTOR_LIST_BEGIN and CTOR_LIST_END are machine-dependent 92 because they push on the stack. */ 93/* This is copied from i386/sysv3.h. */ 94 95#define CTOR_LIST_BEGIN \ 96 asm (INIT_SECTION_ASM_OP); \ 97 asm ("pushl $0") 98#define CTOR_LIST_END CTOR_LIST_BEGIN 99 100/* Constructor list on stack is in reverse order. Go to the end of the 101 list and go backwards to call constructors in the right order. */ 102#define DO_GLOBAL_CTORS_BODY \ 103do { \ 104 func_ptr *p, *beg = alloca (0); \ 105 for (p = beg; *p; p++) \ 106 ; \ 107 while (p != beg) \ 108 (*--p) (); \ 109} while (0) 110 111#undef EXTRA_SECTIONS 112#define EXTRA_SECTIONS in_init, in_fini 113 114#undef EXTRA_SECTION_FUNCTIONS 115#define EXTRA_SECTION_FUNCTIONS \ 116 INIT_SECTION_FUNCTION \ 117 FINI_SECTION_FUNCTION 118 119#define INIT_SECTION_FUNCTION \ 120void \ 121init_section () \ 122{ \ 123 if (in_section != in_init) \ 124 { \ 125 fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP); \ 126 in_section = in_init; \ 127 } \ 128} 129 130#define FINI_SECTION_FUNCTION \ 131void \ 132fini_section () \ 133{ \ 134 if (in_section != in_fini) \ 135 { \ 136 fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP); \ 137 in_section = in_fini; \ 138 } \ 139} 140 141#define TARGET_ASM_CONSTRUCTOR ix86_svr3_asm_out_constructor 142