Return to seq386.h CVS log

Up to [GCC 2.x] / gcc / config

Annotation of gcc/config/seq386.h, revision 1.1

1.1     ! root        1: /* Definitions for Sequent Intel 386.
        !             2:    Copyright (C) 1988 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU CC.
        !             5: 
        !             6: GNU CC 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: GNU CC 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 GNU CC; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            19: 
        !            20: #include "i386.h"
        !            21: 
        !            22: /* Use the BSD assembler syntax.  */
        !            23: 
        !            24: #include "bsd386.h"
        !            25: 
        !            26: /* By default, target has a 80387.  */
        !            27: 
        !            28: #define TARGET_DEFAULT 1
        !            29: 
        !            30: /* Specify predefined symbols in preprocessor.  */
        !            31: 
        !            32: #define CPP_PREDEFINES "-Dunix -Di386 -Dsequent"
        !            33: 
        !            34: /* Pass -Z and -ZO options to the linker.  */
        !            35: 
        !            36: #define LINK_SPEC "%{Z*}"
        !            37: 
        !            38: /* Link with libg.a when debugging, for dbx's sake.  */
        !            39: 
        !            40: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} "
        !            41: 
        !            42: /* We don't want to output SDB debugging information.  */
        !            43: 
        !            44: #undef SDB_DEBUGGING_INFO
        !            45: 
        !            46: /* We want to output DBX debugging information.  */
        !            47: 
        !            48: #define DBX_DEBUGGING_INFO
        !            49: 
        !            50: /* gcc order is ax, dx, cx, bx, si, di, bp, sp, st, st.
        !            51:  * dbx order is ax, dx, cx, st(0), st(1), bx, si, di, st(2), st(3),
        !            52:  *             st(4), st(5), st(6), st(7), sp, bp  */
        !            53: 
        !            54: /* ??? The right thing would be to change the ordering of the
        !            55:    registers to correspond to the conventions of this system,
        !            56:    and get rid of DBX_REGISTER_NUMBER.  */
        !            57: 
        !            58: #undef DBX_REGISTER_NUMBER
        !            59: #define DBX_REGISTER_NUMBER(n)         \
        !            60: ((n) < 3 ? (n) : (n) < 6 ? (n) + 2     \
        !            61:  : (n) == 6 ? 15 : (n) == 7 ? 14 : 3)
        !            62: 
        !            63: /* Prevent anything from being allocated in the register pair cx/bx,
        !            64:    since that would confuse GDB.  */
        !            65: 
        !            66: #undef HARD_REGNO_MODE_OK
        !            67: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
        !            68:   (((REGNO) < 2 ? 1                                                    \
        !            69:     : (REGNO) < 4 ? 1                                                  \
        !            70:     : (REGNO) >= 8 ? (GET_MODE_CLASS (MODE) == MODE_FLOAT              \
        !            71:                    || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)     \
        !            72:     : (MODE) != QImode)                                                        \
        !            73:    && ! (REGNO == 2 && GET_MODE_UNIT_SIZE (MODE) > 4))
        !            74: 
        !            75: /* Floating-point return values come in the FP register.  */
        !            76: 
        !            77: #define VALUE_REGNO(MODE) \
        !            78:   (((MODE)==SFmode || (MODE)==DFmode) ? FIRST_FLOAT_REG : 0)
        !            79: 
        !            80: /* 1 if N is a possible register number for a function value. */
        !            81: 
        !            82: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N)== FIRST_FLOAT_REG)
        !            83: 
        !            84: /* Output assembler code to FILE to increment profiler label # LABELNO
        !            85:    for profiling a function entry. */
        !            86: 
        !            87: #undef FUNCTION_PROFILER
        !            88: #define FUNCTION_PROFILER(FILE, LABELNO)  \
        !            89:    fprintf (FILE, "\tmovl $LP%d,%%eax\n\tcall mcount\n", (LABELNO));
        !            90: 
        !            91: /* Assember pseudo-op for shared data segment. */
        !            92: #define SHARED_SECTION_ASM_OP ".shdata"
        !            93: 
        !            94: /* A C statement or statements which output an assembler instruction
        !            95:    opcode to the stdio stream STREAM.  The macro-operand PTR is a
        !            96:    variable of type `char *' which points to the opcode name in its
        !            97:    "internal" form--the form that is written in the machine description.
        !            98: 
        !            99:    The Sequent assembler (identified as "Balance 8000 Assembler
        !           100:    07/17/85 3.90" by "as -v") does not understand the `movs[bwl]' string
        !           101:    move mnemonics - it uses `smov[bwl]' instead.  Change "movs" into
        !           102:    "smov", carefully avoiding the sign-extend opcodes.  */
        !           103: 
        !           104: #define ASM_OUTPUT_OPCODE(STREAM, PTR) \
        !           105: {                                                                      \
        !           106:   if ((PTR)[0] == 'm'                                                  \
        !           107:       && (PTR)[1] == 'o'                                               \
        !           108:       && (PTR)[2] == 'v'                                               \
        !           109:       && (PTR)[3] == 's'                                               \
        !           110:       && ((PTR)[4] == 'b' || (PTR)[4] == 'w' || (PTR)[4] == 'l')       \
        !           111:       && ((PTR)[5] == ' ' || (PTR)[5] == '\t'|| (PTR)[5] == '\0'))     \
        !           112:     {                                                                  \
        !           113:       fprintf (STREAM, "smov");                                                \
        !           114:       (PTR) += 4;                                                      \
        !           115:     }                                                                  \
        !           116: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.