1 /* Definitions for LynxOS on i386. 2 Copyright (C) 1993, 1995, 1996, 2002, 2004, 2005, 2007 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 3, 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 COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #define TARGET_VERSION fputs (" (i386/LynxOS)", stderr); 22 23 #define TARGET_OS_CPP_BUILTINS() \ 24 do \ 25 { \ 26 builtin_define ("__LITTLE_ENDIAN__"); \ 27 builtin_define ("__x86__"); \ 28 } \ 29 while (0) 30 31 /* The svr4 ABI for the i386 says that records and unions are returned 32 in memory. */ 33 34 #define DEFAULT_PCC_STRUCT_RETURN 1 35 36 /* BSS_SECTION_ASM_OP gets defined i386/unix.h. */ 37 38 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 39 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 40 41 /* LynxOS's GDB counts the floating point registers from 16. */ 42 43 #undef DBX_REGISTER_NUMBER 44 #define DBX_REGISTER_NUMBER(n) \ 45 (TARGET_64BIT ? dbx64_register_map[n] \ 46 : (n) == 0 ? 0 \ 47 : (n) == 1 ? 2 \ 48 : (n) == 2 ? 1 \ 49 : (n) == 3 ? 3 \ 50 : (n) == 4 ? 6 \ 51 : (n) == 5 ? 7 \ 52 : (n) == 6 ? 5 \ 53 : (n) == 7 ? 4 \ 54 : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n) + 8 \ 55 : (-1)) 56 57 /* A C statement to output to the stdio stream FILE an assembler 58 command to advance the location counter to a multiple of 1<<LOG 59 bytes if it is within MAX_SKIP bytes. 60 61 This is used to align code labels according to Intel recommendations. */ 62 63 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 64 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \ 65 do { \ 66 if ((LOG) != 0) { \ 67 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 68 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 69 } \ 70 } while (0) 71 #endif 72 73 /* Undefine SUBTARGET_EXTRA_SPECS it is empty anyway. We define it in 74 config/lynx.h. */ 75 76 #undef SUBTARGET_EXTRA_SPECS 77 78 /* Undefine the definition from att.h to enable our default. */ 79 80 #undef ASM_OUTPUT_ALIGN 81 82 /* Undefine the definition from elfos.h to enable our default. */ 83 84 #undef PREFERRED_DEBUGGING_TYPE 85 86 /* The file i386.c defines TARGET_HAVE_TLS unconditionally if 87 HAVE_AS_TLS is defined. HAVE_AS_TLS is defined as gas support for 88 TLS is detected by configure. We undefine it here. */ 89 90 #undef HAVE_AS_TLS 91