| 1 | /* Definitions for Intel 386 running system V, using gas. |
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| 2 | Copyright (C) 1992, 1995 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of GNU CC. |
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| 5 | |
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| 6 | GNU CC is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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| 11 | GNU CC is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | GNU General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with GNU CC; see the file COPYING. If not, write to |
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| 18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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| 19 | Boston, MA 02111-1307, USA. */ |
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| 20 | |
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| 21 | #include <i386/gas.h> |
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| 22 | |
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| 23 | /* Add stuff that normally comes from i386v.h */ |
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| 24 | |
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| 25 | /* longjmp may fail to restore the registers if called from the same |
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| 26 | function that called setjmp. To compensate, the compiler avoids |
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| 27 | putting variables in registers in functions that use both setjmp |
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| 28 | and longjmp. */ |
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| 29 | |
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| 30 | #define NON_SAVING_SETJMP \ |
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| 31 | (current_function_calls_setjmp && current_function_calls_longjmp) |
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| 32 | |
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| 33 | /* longjmp may fail to restore the stack pointer if the saved frame |
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| 34 | pointer is the same as the caller's frame pointer. Requiring a frame |
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| 35 | pointer in any function that calls setjmp or longjmp avoids this |
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| 36 | problem, unless setjmp and longjmp are called from the same function. |
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| 37 | Since a frame pointer will be required in such a function, it is OK |
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| 38 | that the stack pointer is not restored. */ |
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| 39 | |
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| 40 | #undef FRAME_POINTER_REQUIRED |
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| 41 | #define FRAME_POINTER_REQUIRED \ |
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| 42 | (current_function_calls_setjmp || current_function_calls_longjmp) |
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| 43 | |
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| 44 | /* Modify ASM_OUTPUT_LOCAL slightly to test -msvr3-shlib, adapted to gas */ |
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| 45 | #undef ASM_OUTPUT_LOCAL |
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| 46 | #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ |
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| 47 | do { \ |
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| 48 | int align = exact_log2 (ROUNDED); \ |
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| 49 | if (align > 2) align = 2; \ |
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| 50 | if (TARGET_SVR3_SHLIB) \ |
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| 51 | { \ |
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| 52 | data_section (); \ |
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| 53 | ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \ |
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| 54 | ASM_OUTPUT_LABEL ((FILE), (NAME)); \ |
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| 55 | fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED)); \ |
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| 56 | } \ |
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| 57 | else \ |
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| 58 | { \ |
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| 59 | fputs (".lcomm ", (FILE)); \ |
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| 60 | assemble_name ((FILE), (NAME)); \ |
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| 61 | fprintf ((FILE), ",%u\n", (ROUNDED)); \ |
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| 62 | } \ |
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| 63 | } while (0) |
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| 64 | |
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| 65 | /* Add stuff that normally comes from i386v.h via svr3.h */ |
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| 66 | |
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| 67 | /* Define the actual types of some ANSI-mandated types. These |
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| 68 | definitions should work for most SVR3 systems. */ |
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| 69 | |
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| 70 | #undef SIZE_TYPE |
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| 71 | #define SIZE_TYPE "unsigned int" |
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| 72 | |
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| 73 | #undef PTRDIFF_TYPE |
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| 74 | #define PTRDIFF_TYPE "int" |
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| 75 | |
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| 76 | #undef WCHAR_TYPE |
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| 77 | #define WCHAR_TYPE "long int" |
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| 78 | |
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| 79 | #undef WCHAR_TYPE_SIZE |
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| 80 | #define WCHAR_TYPE_SIZE BITS_PER_WORD |
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