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Annotation of gcc/config/ns32k/encore.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler.  ENCORE NS32000 version.
        !             2:    Copyright (C) 1988 Free Software Foundation, Inc.
        !             3:    Adapted by Robert Brown ([email protected]) from the Sequent
        !             4:      version by Michael Tiemann ([email protected]).
        !             5: 
        !             6: This file is part of GNU CC.
        !             7: 
        !             8: GNU CC is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU General Public License as published by
        !            10: the Free Software Foundation; either version 2, or (at your option)
        !            11: any later version.
        !            12: 
        !            13: GNU CC is distributed in the hope that it will be useful,
        !            14: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            16: GNU General Public License for more details.
        !            17: 
        !            18: You should have received a copy of the GNU General Public License
        !            19: along with GNU CC; see the file COPYING.  If not, write to
        !            20: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            21: 
        !            22: 
        !            23: #define EXTERNAL_PREFIX '?'
        !            24: #define IMMEDIATE_PREFIX '$'
        !            25: 
        !            26: #include "ns32k/ns32k.h"
        !            27: 
        !            28: #define SDB_DEBUGGING_INFO
        !            29: #undef DBX_REGISTER_NUMBER
        !            30: #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
        !            31: 
        !            32: /* Cause long-jump assembler to be used,
        !            33:    since otherwise some files fail to be assembled right.  */
        !            34: #define ASM_SPEC "-j"
        !            35: 
        !            36: #undef ASM_FILE_START
        !            37: #undef ASM_GENERATE_INTERNAL_LABEL
        !            38: #undef ASM_OUTPUT_ADDR_DIFF_ELT
        !            39: #undef ASM_OUTPUT_ALIGN
        !            40: #undef ASM_OUTPUT_ASCII
        !            41: #undef ASM_OUTPUT_DOUBLE
        !            42: #undef ASM_OUTPUT_INT
        !            43: #undef ASM_OUTPUT_INTERNAL_LABEL
        !            44: #undef ASM_OUTPUT_LOCAL
        !            45: #undef CPP_PREDEFINES
        !            46: #undef FUNCTION_BOUNDARY
        !            47: #undef PRINT_OPERAND
        !            48: #undef PRINT_OPERAND_ADDRESS
        !            49: #undef TARGET_VERSION
        !            50: #undef FUNCTION_PROFILER
        !            51: #undef ASM_OUTPUT_LABELREF_AS_INT
        !            52: 
        !            53: #define TARGET_DEFAULT 9  /* 32332 with 32081.  */
        !            54: #define TARGET_VERSION fprintf (stderr, " (32000, Encore syntax)");
        !            55: /* Note Encore does not standardly do -Dencore.  */
        !            56: /* budd: should have a -ns32332 (or -apc) switch! but no harm for now */
        !            57: #define CPP_PREDEFINES "-Dns32000 -Dn16 -Dns16000 -Dns32332 -Dunix"
        !            58: 
        !            59: /* Ignore certain cpp directives used in header files on sysV.  */
        !            60: #define SCCS_DIRECTIVE
        !            61: 
        !            62: /* Output #ident as a .ident.  */
        !            63: #define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
        !            64: 
        !            65: /* The .file command should always begin the output.  */
        !            66: #define ASM_FILE_START(FILE) \
        !            67: output_file_directive ((FILE), main_input_filename)
        !            68: 
        !            69: #define FUNCTION_BOUNDARY 128          /* speed optimization */
        !            70: 
        !            71: /*
        !            72:  *  The Encore assembler uses ".align 2" to align on 2-byte boundaries.
        !            73:  */
        !            74: 
        !            75: #define ASM_OUTPUT_ALIGN(FILE,LOG)                                     \
        !            76:        fprintf (FILE, "\t.align %d\n", 1 << (LOG))
        !            77: 
        !            78: /*
        !            79:  *  Internal labels are prefixed with a period.
        !            80:  */
        !            81: 
        !            82: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)                  \
        !            83:        sprintf (LABEL, "*.%s%d", PREFIX, NUM)
        !            84: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)                     \
        !            85:        fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
        !            86: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)                     \
        !            87:        fprintf (FILE, "\t.word .L%d-.LI%d\n", VALUE, REL)
        !            88: 
        !            89: /*
        !            90:  *  Different syntax for integer constants, double constants, and
        !            91:  *  uninitialized locals.
        !            92:  */
        !            93: 
        !            94: #define ASM_OUTPUT_INT(FILE,VALUE)                             \
        !            95: ( fprintf (FILE, "\t.double "),                                        \
        !            96:   output_addr_const (FILE, (VALUE)),                           \
        !            97:   fprintf (FILE, "\n"))
        !            98: 
        !            99: #define ASM_OUTPUT_LABELREF_AS_INT(STREAM, NAME)                       \
        !           100: do {                                                                   \
        !           101:   fprintf (STREAM, "\t.double\t");                                     \
        !           102:   ASM_OUTPUT_LABELREF (STREAM, NAME);                                  \
        !           103:   fprintf (STREAM, "\n");                                              \
        !           104: } while (0)
        !           105: 
        !           106: 
        !           107: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)                          \
        !           108:  fprintf (FILE, "\t.long 0f%.20e\n", (VALUE))
        !           109: 
        !           110: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)            \
        !           111: ( fputs ("\t.bss ", (FILE)),                                   \
        !           112:   assemble_name ((FILE), (NAME)),                              \
        !           113:   fprintf ((FILE), ",%u,%u\n", (SIZE), (ROUNDED)))
        !           114: 
        !           115:  /*
        !           116:   *  Encore assembler can't handle huge string constants like the one in
        !           117:   *  gcc.c.  If the default routine in varasm.c were more conservative, this
        !           118:   *  code could be eliminated.  It starts a new .ascii directive every 40
        !           119:   *  characters.
        !           120:   */
        !           121: 
        !           122: #define ASM_OUTPUT_ASCII(file, p, size)                        \
        !           123: {                                                      \
        !           124:   for (i = 0; i < (size); i++)                         \
        !           125:     {                                                  \
        !           126:       register int c = (p)[i];                         \
        !           127:       if ((i / 40) * 40 == i)                          \
        !           128:       if (i == 0)                                      \
        !           129:         fprintf ((file), "\t.ascii \"");               \
        !           130:       else                                             \
        !           131:         fprintf ((file), "\"\n\t.ascii \"");           \
        !           132:       if (c == '\"' || c == '\\')                      \
        !           133:         putc ('\\', (file));                           \
        !           134:       if (c >= ' ' && c < 0177)                                \
        !           135:         putc (c, (file));                              \
        !           136:       else                                             \
        !           137:         {                                              \
        !           138:           fprintf ((file), "\\%o", c);                 \
        !           139:           if (i < (size) - 1                           \
        !           140:               && (p)[i + 1] >= '0' && (p)[i + 1] <= '9')\
        !           141:           fprintf ((file), "\"\n\t.ascii \"");         \
        !           142:         }                                              \
        !           143:     }                                                  \
        !           144:   fprintf ((file), "\"\n");                            \
        !           145: }
        !           146: 
        !           147: /* Modify syntax of jsr instructions.  */
        !           148: #define CALL_MEMREF_IMPLICIT
        !           149: 
        !           150: #define NO_ABSOLUTE_PREFIX_IF_SYMBOLIC
        !           151: 
        !           152: #define PRINT_OPERAND(FILE, X, CODE) print_operand(FILE, X, CODE)
        !           153: 
        !           154: #define PRINT_OPERAND_ADDRESS(FILE, ADDR)  print_operand_address(FILE, ADDR)
        !           155: 
        !           156: /* Change the way in which data is allocated and initialized on the
        !           157:    encore so that both private and shared data are supported.  Shared data
        !           158:    that is initialized must be contained in the ".shrdata" section
        !           159:    of the program.  This is accomplished by defining the SHARED_SECTION_ASM_OP
        !           160:    macro.  Share data that is simply allocated, and not initialized must
        !           161:    be prefixed with the ".shrcomm" or ".shrbss" pseudo op, for common or
        !           162:    local data respectively.  This is accomplished by redefining the
        !           163:    ASM_OUTPUT_COMMON and ASM_OUTPUT_LOCAL macros. */
        !           164:     
        !           165: /* Assembler pseudo-op for shared data segment. */
        !           166: 
        !           167: #define SHARED_SECTION_ASM_OP ".shrdata"
        !           168: 
        !           169: /* This says how to output an assembler line
        !           170:    to define a shared common symbol. */
        !           171: 
        !           172: #define ASM_OUTPUT_SHARED_COMMON(FILE, NAME, SIZE, ROUNDED) \
        !           173: ( fputs (".shrcomm ", (FILE)),                 \
        !           174:   assemble_name ((FILE), (NAME)),              \
        !           175:   fprintf ((FILE), ",%d\n", (ROUNDED)))
        !           176: 
        !           177: /* This says how to output an assembler line
        !           178:    to define a shared local symbol. */
        !           179: 
        !           180: #define ASM_OUTPUT_SHARED_LOCAL(FILE, NAME, SIZE, ROUNDED) \
        !           181: ( fputs ("\t.shrbss ", (FILE)),                                \
        !           182:   assemble_name ((FILE), (NAME)),                      \
        !           183:   fprintf ((FILE), ",%d,%d\n", (SIZE), (ROUNDED)))
        !           184: 
        !           185: #define FUNCTION_PROFILER(FILE, LABELNO)  \
        !           186:    fprintf (FILE, "\taddr .LP%d,r0\n\tjsr mcount\n", (LABELNO))
        !           187: 
        !           188: #define ENCORE_ASM

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