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Annotation of gcc/config/m68k/atari.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler.
        !             2:    Atari TT ASV version.
        !             3:    Copyright (C) 1994 Free Software Foundation, Inc.
        !             4: 
        !             5: This file is part of GNU CC.
        !             6: 
        !             7: GNU CC 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 1, or (at your option)
        !            10: any later version.
        !            11: 
        !            12: GNU CC 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 GNU CC; see the file COPYING.  If not, write to
        !            19: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            20: 
        !            21: #include "m68k/m68kv4.h"
        !            22: 
        !            23: /* Dollars and dots in labels are not allowed. */
        !            24: 
        !            25: #define NO_DOLLAR_IN_LABEL
        !            26: #define NO_DOT_IN_LABEL
        !            27: 
        !            28: /* Alter assembler syntax for fsgldiv and fsglmul.
        !            29:    It is highly likely that this is a generic SGS m68k assembler dependency.
        !            30:    If so, it should eventually be handled in the m68k/sgs.h ASM_OUTPUT_OPCODE
        !            31:    macro, like the other SGS assembler quirks.  -fnf */
        !            32: 
        !            33: #define FSGLDIV_USE_S          /* Use fsgldiv.s, not fsgldiv.x */
        !            34: #define FSGLMUL_USE_S          /* Use fsglmul.s, not fsglmul.x */
        !            35: 
        !            36: /* At end of a switch table, define LDnnn iff the symbol LInnn was defined.
        !            37:    Some SGS assemblers have a bug such that "Lnnn-LInnn-2.b(pc,d0.l*2)"
        !            38:    fails to assemble.  Luckily "Lnnn(pc,d0.l*2)" produces the results
        !            39:    we want.  This difference can be accommodated by making the assembler
        !            40:    define such "LDnnn" to be either "Lnnn-LInnn-2.b", "Lnnn", or any other
        !            41:    string, as necessary.  This is accomplished via the ASM_OUTPUT_CASE_END
        !            42:    macro. (the Amiga assembler has this bug) */
        !            43: 
        !            44: #undef ASM_OUTPUT_CASE_END
        !            45: #define ASM_OUTPUT_CASE_END(FILE,NUM,TABLE)                            \
        !            46: do {                                                                   \
        !            47:   if (switch_table_difference_label_flag)                              \
        !            48:     asm_fprintf ((FILE), "\t%s %LLD%d,%LL%d\n", SET_ASM_OP, (NUM), (NUM));\
        !            49:   switch_table_difference_label_flag = 0;                              \
        !            50: } while (0)
        !            51: 
        !            52: int switch_table_difference_label_flag;
        !            53: 
        !            54: /* This definition of ASM_OUTPUT_ASCII is the same as the one in m68k/sgs.h,
        !            55:    which has been overridden by the one in svr4.h.  However, we can't use
        !            56:    the one in svr4.h because the ASV assembler croaks on some of the
        !            57:    strings that it emits (such as .string "\"%s\"\n"). */
        !            58: 
        !            59: #undef ASM_OUTPUT_ASCII
        !            60: #define ASM_OUTPUT_ASCII(FILE,PTR,LEN)                         \
        !            61: {                                                              \
        !            62:   register int sp = 0, lp = 0, ch;                             \
        !            63:   fprintf ((FILE), "\t%s ", BYTE_ASM_OP);                              \
        !            64:   do {                                                         \
        !            65:     ch = (PTR)[sp];                                            \
        !            66:     if (ch > ' ' && ! (ch & 0x80) && ch != '\\')               \
        !            67:       {                                                                \
        !            68:        fprintf ((FILE), "'%c", ch);                            \
        !            69:       }                                                                \
        !            70:     else                                                       \
        !            71:       {                                                                \
        !            72:        fprintf ((FILE), "0x%x", ch);                           \
        !            73:       }                                                                \
        !            74:     if (++sp < (LEN))                                          \
        !            75:       {                                                                \
        !            76:        if ((sp % 10) == 0)                                     \
        !            77:          {                                                     \
        !            78:            fprintf ((FILE), "\n\t%s ", BYTE_ASM_OP);           \
        !            79:          }                                                     \
        !            80:        else                                                    \
        !            81:          {                                                     \
        !            82:            putc (',', (FILE));                                 \
        !            83:          }                                                     \
        !            84:       }                                                                \
        !            85:   } while (sp < (LEN));                                                \
        !            86:   putc ('\n', (FILE));                                         \
        !            87: }
        !            88: 
        !            89: /* Override these for the sake of an assembler bug: the ASV
        !            90:    assembler can't handle .LC0@GOT syntax.  This pollutes the final
        !            91:    table for shared librarys but what's a poor soul to do; sigh... RFH */
        !            92: 
        !            93: #undef ASM_GENERATE_INTERNAL_LABEL
        !            94: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)  \
        !            95:   if (flag_pic && !strcmp(PREFIX,"LC"))                        \
        !            96:     sprintf (LABEL, "*%s%%%d", PREFIX, NUM);           \
        !            97:   else                                                 \
        !            98:     sprintf (LABEL, "*%s%s%d", LOCAL_LABEL_PREFIX, PREFIX, NUM)
        !            99: 
        !           100: #undef ASM_OUTPUT_INTERNAL_LABEL
        !           101: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)     \
        !           102:   if (flag_pic && !strcmp(PREFIX,"LC"))                        \
        !           103:     asm_fprintf (FILE, "%s%%%d:\n", PREFIX, NUM);      \
        !           104:   else                                                 \
        !           105:     asm_fprintf (FILE, "%0L%s%d:\n", PREFIX, NUM)
        !           106: 
        !           107: /* Define how to generate (in the callee) the output value of a function
        !           108:    and how to find (in the caller) the value returned by a function.  VALTYPE
        !           109:    is the data type of the value (as a tree).  If the precise function being
        !           110:    called is known, FUNC is its FUNCTION_DECL; otherwise, FUNC is 0.
        !           111:    For the Atari generate the result in d0 or fp0 as appropriate. */
        !           112: 
        !           113: #undef FUNCTION_VALUE
        !           114: #define FUNCTION_VALUE(VALTYPE, FUNC)                  \
        !           115: (TREE_CODE (VALTYPE) == REAL_TYPE && TARGET_68881      \
        !           116:  ? gen_rtx (REG, TYPE_MODE (VALTYPE), 16)              \
        !           117:  : gen_rtx (REG, TYPE_MODE (VALTYPE), 0))
        !           118: 

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