126 lines
4.5 KiB
C
126 lines
4.5 KiB
C
/* Definitions of target machine for GNU compiler.
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Commodore Amiga A3000UX version.
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Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "m68kv4.h"
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/* Alter assembler syntax for fsgldiv. */
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#define FSGLDIV_USE_S
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/* Names to predefine in the preprocessor for this target machine. For the
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Amiga, these definitions match those of the native AT&T compiler. Note
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that we override the definition in m68kv4.h, where SVR4 is defined and
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AMIX isn't. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES \
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"-Dm68k -Dunix -DAMIX -Amachine(m68k) -Acpu(m68k) -Asystem(unix) -Alint(off)"
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/* This is the library routine that is used to transfer control from
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the trampoline to the actual nested function. FIXME: This needs to
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be implemented still. -fnf */
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#undef TRANSFER_FROM_TRAMPOLINE
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/* At end of a switch table, define LDnnn iff the symbol LInnn was defined.
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Some SGS assemblers have a bug such that "Lnnn-LInnn-2.b(pc,d0.l*2)"
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fails to assemble. Luckily "Lnnn(pc,d0.l*2)" produces the results
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we want. This difference can be accommodated by making the assembler
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define such "LDnnn" to be either "Lnnn-LInnn-2.b", "Lnnn", or any other
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string, as necessary. This is accomplished via the ASM_OUTPUT_CASE_END
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macro. (the Amiga assembler has this bug) */
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#undef ASM_OUTPUT_CASE_END
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#define ASM_OUTPUT_CASE_END(FILE,NUM,TABLE) \
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do { \
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if (switch_table_difference_label_flag) \
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asm_fprintf ((FILE), "\t%s %LLD%d,%LL%d\n", SET_ASM_OP, (NUM), (NUM));\
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switch_table_difference_label_flag = 0; \
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} while (0)
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int switch_table_difference_label_flag;
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/* This says how to output assembler code to declare an
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uninitialized external linkage data object. Under SVR4,
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the linker seems to want the alignment of data objects
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to depend on their types. We do exactly that here.
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[This macro overrides the one in svr4.h because the amix assembler
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has a minimum default alignment of 4, and will not accept any
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explicit alignment smaller than this. -fnf] */
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#undef ASM_OUTPUT_ALIGNED_COMMON
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#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
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do { \
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fputs ("\t.comm\t", (FILE)); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), ",%u,%u\n", (SIZE), MAX ((ALIGN) / BITS_PER_UNIT, 4)); \
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} while (0)
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/* This says how to output assembler code to declare an
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uninitialized internal linkage data object. Under SVR4,
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the linker seems to want the alignment of data objects
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to depend on their types. We do exactly that here.
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[This macro overrides the one in svr4.h because the amix assembler
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has a minimum default alignment of 4, and will not accept any
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explicit alignment smaller than this. -fnf] */
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#undef ASM_OUTPUT_ALIGNED_LOCAL
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#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
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do { \
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fprintf ((FILE), "\t%s\t%s,%u,%u\n", \
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BSS_ASM_OP, (NAME), (SIZE), MAX ((ALIGN) / BITS_PER_UNIT, 4)); \
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} while (0)
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/* This definition of ASM_OUTPUT_ASCII is the same as the one in m68ksgs.h,
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which has been overridden by the one in svr4.h. However, we can't use
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the one in svr4.h because the amix assembler croaks on some of the
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strings that it emits (such as .string "\"%s\"\n"). */
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#undef ASM_OUTPUT_ASCII
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#define ASM_OUTPUT_ASCII(FILE,PTR,LEN) \
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{ \
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register int sp = 0, lp = 0, ch; \
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fprintf ((FILE), "\t%s ", BYTE_ASM_OP); \
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do { \
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ch = (PTR)[sp]; \
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if (ch > ' ' && ! (ch & 0x80) && ch != '\\') \
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{ \
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fprintf ((FILE), "'%c", ch); \
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} \
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else \
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{ \
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fprintf ((FILE), "0x%x", ch); \
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} \
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if (++sp < (LEN)) \
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{ \
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if ((sp % 10) == 0) \
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{ \
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fprintf ((FILE), "\n\t%s ", BYTE_ASM_OP); \
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} \
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else \
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{ \
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putc (',', (FILE)); \
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} \
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} \
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} while (sp < (LEN)); \
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putc ('\n', (FILE)); \
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}
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