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- /* Definitions of target machine for GNU compiler. Apollo 680X0 version.
- Copyright (C) 1989 Free Software Foundation, Inc.
-
- This file is part of GNU CC.
-
- GNU CC is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "tm-m68k.h"
-
- /* This symbol may be tested in other files for special Apollo handling */
-
- #define TM_APOLLO
-
- /* See tm-m68k.h. 7 means 68020 with 68881. */
-
- #ifndef TARGET_DEFAULT
- #define TARGET_DEFAULT 7
- #endif
-
- /* Target switches for the Apollo is the same as in tm-m68k.h, except
- there is no Sun FPA. */
-
- #undef TARGET_SWITCHES
- #define TARGET_SWITCHES \
- { { "68020", 5}, \
- { "c68020", 5}, \
- { "68881", 2}, \
- { "bitfield", 4}, \
- { "68000", -5}, \
- { "c68000", -5}, \
- { "soft-float", -0102}, \
- { "nobitfield", -4}, \
- { "rtd", 8}, \
- { "nortd", -8}, \
- { "short", 040}, \
- { "noshort", -040}, \
- { "", TARGET_DEFAULT}}
-
- /* Define __HAVE_68881__ in preprocessor,
- according to the -m flags.
- This will control the use of inline 68881 insns in certain macros.
- Also inform the program which CPU this is for. */
-
- #if TARGET_DEFAULT & 02
-
- /* -m68881 is the default */
- #define CPP_SPEC \
- "%{!msoft-float:%{mfpa:-D__HAVE_FPA__ }%{!mfpa:-D__HAVE_68881__ }}\
- %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
-
- #else
-
- /* -msoft-float is the default */
- #define CPP_SPEC \
- "%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\
- %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
-
- #endif
-
- /* Names to predefine in the preprocessor for this target machine. */
- /* These are the ones defined by Apollo, plus mc68000 for uniformity with
- GCC on other 68000 systems. */
-
- #define CPP_PREDEFINES "-Dapollo -Daegis -Dunix"
-
- /* cpp has to support a #sccs directive for the /usr/include files */
-
- #define SCCS_DIRECTIVE
-
- /* Allow #ident but output nothing for it. */
-
- #define IDENT_DIRECTIVE
- #define ASM_OUTPUT_IDENT(FILE, NAME)
-
- /* Allow dollarsigns in identifiers */
-
- #define DOLLARS_IN_IDENTIFIERS 1
-
- /* -m68000 requires special flags to the assembler.
- The -C flag is passed to a modified GNU assembler to cause COFF
- modules to be produced. Remove it if you're not using this.
- (See vasta@apollo.com.) */
-
- #define ASM_SPEC \
- "-C %{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}}"
-
- /* STARTFILE_SPEC
- Note that includes knowledge of the default specs for gcc, ie. no
- args translates to the same effect as -m68881 */
-
- #if TARGET_DEFAULT & 2
- /* -m68881 is the default */
- #define STARTFILE_SPEC \
- "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
- #else
- /* -msoft-float is the default */
- #define STARTFILE_SPEC \
- "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
- #endif
-
- /* Specify library to handle `-a' basic block profiling. */
-
- #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
- %{a:/usr/lib/bb_link.o} "
-
- /* Debugging is not supported yet */
-
- #undef DBX_DEBUGGING_INFO
- #undef SDB_DEBUGGING_INFO
-
- /* Every structure or union's size must be a multiple of 2 bytes. */
-
- #define STRUCTURE_SIZE_BOUNDARY 16
-
- /* Functions which return large structures get the address
- to place the wanted value at offset 8 from the frame. */
-
- #undef PCC_STATIC_STRUCT_RETURN
- #undef STRUCT_VALUE_REGNUM
-
- /* Caller treats address of return area like a parm. */
- #define STRUCT_VALUE 0
-
- #define STRUCT_VALUE_INCOMING \
- gen_rtx (MEM, Pmode, \
- gen_rtx (PLUS, SImode, frame_pointer_rtx, \
- gen_rtx (CONST_INT, VOIDmode, 8)))
-
- /* Specify how to pad function arguments.
- Arguments sizes < sizeof(int) are padded upward, and larger arguments
- are not padded at all. */
-
- #define FUNCTION_ARG_PADDING(mode, size) \
- (((mode) == BLKmode \
- ? (GET_CODE (size) == CONST_INT \
- && INTVAL (size) < PARM_BOUNDARY / BITS_PER_UNIT) \
- : GET_MODE_BITSIZE (mode) < PARM_BOUNDARY) \
- ? upward : none)
-
- /* Short integral argument prototype promotion is not done */
-
- #undef PROMOTE_PROTOTYPES
-
- /* The definition of this macro imposes a limit on the size of
- an aggregate object which can be treated as if it were a scalar
- object. */
-
- #define MAX_FIXED_MODE_SIZE BITS_PER_WORD
-
- /* The definition of this macro implies that there are cases where
- a scalar value cannot be returned in registers.
- For Apollo, anything larger than one integer register is returned
- using the structure-value mechanism, i.e. objects of DFmode are
- returned that way. */
-
- #define RETURN_IN_MEMORY(type) \
- (GET_MODE_SIZE (TYPE_MODE (type)) > UNITS_PER_WORD)
-
- /* This is how to output a reference to a user-level label named NAME.
- In order to link to Apollo libraries, no underscore is prepended to names.
- `assemble_name' uses this. */
-
- #undef ASM_OUTPUT_LABELREF
- #define ASM_OUTPUT_LABELREF(FILE,NAME) \
- fprintf (FILE, "%s", NAME)
-
-
-