1 /* Definitions for LynxOS on i386. 2 Copyright (C) 1993, 1995, 1996, 2002, 2004, 2005 3 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 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 GCC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING. If not, write to 19 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20 Boston, MA 02110-1301, USA. */ 21 22 #define TARGET_VERSION fputs (" (i386/LynxOS)", stderr); 23 24 #define TARGET_OS_CPP_BUILTINS() \ 25 do \ 26 { \ 27 builtin_define ("__LITTLE_ENDIAN__"); \ 28 builtin_define ("__x86__"); \ 29 } \ 30 while (0) 31 32 /* The svr4 ABI for the i386 says that records and unions are returned 33 in memory. */ 34 35 #define DEFAULT_PCC_STRUCT_RETURN 1 36 37 /* BSS_SECTION_ASM_OP gets defined i386/unix.h. */ 38 39 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 40 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 41 42 /* LynxOS's GDB counts the floating point registers from 16. */ 43 44 #undef DBX_REGISTER_NUMBER 45 #define DBX_REGISTER_NUMBER(n) \ 46 (TARGET_64BIT ? dbx64_register_map[n] \ 47 : (n) == 0 ? 0 \ 48 : (n) == 1 ? 2 \ 49 : (n) == 2 ? 1 \ 50 : (n) == 3 ? 3 \ 51 : (n) == 4 ? 6 \ 52 : (n) == 5 ? 7 \ 53 : (n) == 6 ? 5 \ 54 : (n) == 7 ? 4 \ 55 : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n) + 8 \ 56 : (-1)) 57 58 /* A C statement to output to the stdio stream FILE an assembler 59 command to advance the location counter to a multiple of 1<<LOG 60 bytes if it is within MAX_SKIP bytes. 61 62 This is used to align code labels according to Intel recommendations. */ 63 64 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 65 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \ 66 do { \ 67 if ((LOG) != 0) { \ 68 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 69 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 70 } \ 71 } while (0) 72 #endif 73 74 /* Undefine SUBTARGET_EXTRA_SPECS it is empty anyway. We define it in 75 config/lynx.h. */ 76 77 #undef SUBTARGET_EXTRA_SPECS 78 79 /* Undefine the definition from att.h to enable our default. */ 80 81 #undef ASM_OUTPUT_ALIGN 82 83 /* Undefine the definition from elfos.h to enable our default. */ 84 85 #undef PREFERRED_DEBUGGING_TYPE 86 87 /* The file i386.c defines TARGET_HAVE_TLS unconditionally if 88 HAVE_AS_TLS is defined. HAVE_AS_TLS is defined as gas support for 89 TLS is detected by configure. We undefine it here. */ 90 91 #undef HAVE_AS_TLS 92